A ball mill system with an optimized filter structure and a method for replacing a filter screen

Abstract

This invention relates to the field of ball mill technology, and in particular to a ball mill system with an optimized filtration structure and a method for replacing the filter screen. The system includes a frame, with a first top plate and a second top plate mounted on the top of the frame. From left to right, a first bottom plate, a second bottom plate, a third bottom plate, and a fourth bottom plate are sequentially mounted on the middle of the frame. A raw material hopper and a turbine-type air classifier are mounted on the upper end of the first top plate. The lower end of the raw material hopper penetrates the first top plate and is connected to a quantitative feeder, which is mounted on the upper end of the first bottom plate. A ball mill is located at the bottom of the frame. Compared with the prior art, the present invention has a reasonable structural design and effectively allows for timely replacement of the filter device, avoiding waste of filter material due to premature replacement and overloading of the filter material due to delayed replacement, thus improving the filtration effect and effectively enhancing the performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball mill, in particular to a ball mill system with optimized filtering structure and a method for replacing filter screen. BACKGROUND

[0002] Ball mill is a key equipment for further crushing after material is crushed. Ball mill is one of high-fine grinding machines widely used in industrial production, and there are many types, such as tubular ball mill, rod ball mill, cement ball mill, ultra-fine laminated mill, hand ball mill, horizontal ball mill, ball mill bearing, energy-saving ball mill, overflow type ball mill, ceramic ball mill and lattice ball mill. Ball mill is suitable for grinding various ores and other materials, and is widely used in the industries of ore dressing, building materials and chemical industry, and can be divided into dry and wet grinding modes. According to the discharge mode, it can be divided into lattice type and overflow type. According to the shape of the cylinder, it can be divided into short cylinder ball mill, long cylinder ball mill, pipe mill and conical mill.

[0003] When the ball mill works, it is easy to pollute the environment, because a large amount of dust and noise will be generated in the processing process, which will cause a certain degree of pollution to the environment. In view of this problem, the existing ball mill equipment generally adds a filtering mechanism, and uses filtering devices such as filter sheets and filter screens to filter dust and reduce pollution to the environment.

[0004] However, the following two problems will occur in the use of the filtering device:

[0005] 1. The filtering device needs to be replaced in time, and cannot be too early or too late. If it is replaced too early, the filtering material will be wasted, and if it is replaced too late, the filtering material will be overloaded, which will affect the filtering effect and thus cannot meet the requirement of reducing pollution to the environment.

[0006] 2. In the use of the existing ball mill, the filtering material of the filtering device is generally square as a whole; and the ground material and dust generally enter the filtering device from one direction, for example, when the material and dust enter the filtering device horizontally, their route is similar to a parabola under a horizontal force, which will cause a problem that the effective working area of the filtering material is smaller and smaller as it is closer to the back. In the case that the filtering material is square as a whole, it is easy to cause waste of the filtering material.

[0007] Therefore, we provide a ball mill system with optimized filtering structure to solve at least one of the above problems. SUMMARY

[0008] The purpose of the present application is to solve the problems in the prior art, and to provide a ball mill system with optimized filtering structure and a method for replacing filter screen to solve at least one of the problems.

[0009] To achieve the above object, the present application adopts the following technical solutions:

[0010] In a first aspect, a ball mill system with an optimized filtering structure is designed, which comprises a rack, a first top plate and a second top plate installed on the top of the rack, a first bottom plate, a second bottom plate, a third bottom plate and a fourth bottom plate installed on the middle of the rack from left to right, a raw material bin and a turbo airflow classifier installed on the upper end of the first top plate, a quantitative feeder connected to the lower end of the raw material bin and penetrating through the first top plate, the quantitative feeder installed on the upper end of the first bottom plate, a ball mill arranged at the bottom of the rack, the quantitative feeder connected to the ball mill through a pipeline, the turbo airflow classifier connected to the ball mill through two pipelines penetrating through the second bottom plate, a filtering mechanism and an exhaust system installed on the upper end of the third bottom plate, the exhaust system connected to the filtering mechanism through a pipeline penetrating through the second top plate, the turbo airflow classifier connected to the filtering mechanism through a pipeline on one side, and the filtering mechanism connected to a pneumatic conveying system after penetrating through the third bottom plate.

[0011] The filtering mechanism comprises a shell, a bottom plate, filter screens, partitions and a material blocking monitoring assembly, the shell is installed on the upper end of the third bottom plate, the lower end of the shell penetrates through the third bottom plate and is connected to the bottom plate, the lower end of the bottom plate is connected to the pneumatic conveying system, five groups of filter screens are equidistantly arranged in the inner cavity of the shell, four groups of partitions are equidistantly connected to the inner cavity of the shell, each partition is located below every two filter screens, one group of material blocking monitoring assemblies is installed on one side of three groups of partitions, and material blocking monitoring assemblies are installed on both sides of the last group of partitions.

[0012] Further, the material blocking monitoring assembly comprises mounting strips, fixing sleeves, connecting shafts, fixed strips, baffles, electric hydraulic cylinders, hydraulic rods, first connecting pieces, movable rods, second connecting pieces and weight sensors, mounting strips and electric hydraulic cylinders are installed on one side of three partitions and both sides of another partition, two fixing sleeves are integrally connected on one side of the mounting strip, the connecting shafts are rotatably sleeved and connected between the fixing sleeves, the fixed strips are fixedly sleeved on the middle part of the connecting shafts, the baffles are integrally connected to the fixed strips, the mounting grooves are arranged on the lower end of the baffles, the weight sensors are arranged in the inner cavities of the mounting grooves, the second connecting pieces are arranged on the lower end of the baffles, the movable rods are movably connected to the second connecting pieces through pins, the first connecting pieces are connected to the electric hydraulic cylinders through the hydraulic rods, and the first connecting pieces are connected to the movable rods through pins.

[0013] Further, third baffles are connected to the upper ends of the mounting strips, and the mounting strips and the third baffles are integrally designed.

[0014] Further, the first blocking strip is installed on the two sides of the shell cavity and one side of the three partitions, the position of the first blocking strip corresponds to the third blocking strip, and the upper end faces of the first blocking strip and the third blocking strip are symmetrically inclined.

[0015] Further, the support assembly is installed between the partitions and between the partitions and the inner wall of the shell, the support assembly comprises a rectangular frame installed between the partitions and between the partitions and the inner wall of the shell, and the upper end of the rectangular frame is provided with a placing groove, and the lower ends of the five groups of filter screens are inserted into the inner cavities of the placing grooves.

[0016] Further, the upper end of the bottom plate is symmetrically provided with a guide plate, and the corresponding side of the guide plate is designed to be inclined.

[0017] Further, the upper end of the shell is screwed with a cover plate, and the upper end of the second top plate is provided with a corresponding notch.

[0018] Further, the outer side of the partition is provided with a square groove.

[0019] Further, two storage bins are jointly installed between the second top plate and the fourth bottom plate, the storage bins are connected through pipelines, and one of the storage bins is connected with the pneumatic conveying system through a pipeline.

[0020] In the second aspect, a method for replacing filter screens is provided, and the method is applied to the ball mill system with the optimized filtering structure.

[0021] The weight of the filtered material is monitored by the blocking monitoring assembly, and the accumulated material is discharged whenever the accumulated weight of the filtered material reaches a preset threshold w1; and the total weight of the filtered material is calculated as w1*n according to the recorded discharge times n.

[0022] In the test phase, the exhaust gas is detected for pollution, and when it is detected that the exhaust gas starts to exceed the standard, the total weight of the filtered material w1*n1 at this time is obtained.

[0023] In the application phase, the current discharge times n2 and the total weight of the filtered material w1*n2 are obtained after the accumulated material is discharged each time; and when n2=n1 or w1*n2=w1*n1, an alarm for replacing the filter screens is sent.

[0024] The ball mill system with the optimized filtering structure and the method for replacing filter screens have the beneficial effects that:

[0025] 1. The material blocking monitoring assembly designed in the filtering mechanism facilitates the interception and accumulation of the filtered material, and when the weight of the baffle of the material blocking monitoring assembly reaches the preset threshold w1, the material is discharged, the number n of times of opening the baffle is recorded, the total weight w1*n of the filtered material is obtained, and at the same time, the pollution of the discharged gas is detected to know how much filtered material w1*n1 can be obtained in this process from the beginning of work to the full load state, and then when the filtered material reaches w1*n1 in actual use, a warning is issued to remind the worker to replace the filter screen, so that the filter screen is replaced in time, which neither affects the filtering effect by replacing too late nor wastes the filter screen by replacing too early, and effectively improves the use effect.

[0026] 2. The five groups of rectangular filter screens are designed, and the midpoint connecting lines of the filter screens form a trapezoid, which can effectively match the parabolic motion trajectory of the material entering from left to right, save the upper part of the filtering material of the latter groups, avoid waste, and effectively improve the use effect. SUMMARY

[0027] Figure 1 The overall three-dimensional structure schematic diagram of the present application is shown;

[0028] Figure 2 The overall internal three-dimensional structure schematic diagram of the present application is shown;

[0029] Figure 3 The filtering mechanism three-dimensional structure schematic diagram of the present application is shown;

[0030] Figure 4 The filtering mechanism half-section internal three-dimensional structure schematic diagram of the present application is shown;

[0031] Figure 5 The traditional filtering mechanism half-section internal three-dimensional structure schematic diagram of the present application is shown;

[0032] Figure 6 The partial filtering mechanism three-dimensional split structure schematic diagram of the present application is shown;

[0033] Figure 7 The material blocking monitoring assembly three-dimensional split structure schematic diagram of the present application is shown;

[0034] Figure 8 The Figure 7 The device enlargement structure schematic diagram of part A of the present application is shown;

[0035] Figure 9 The material blocking monitoring assembly three-dimensional bottom view structure schematic diagram of the present application is shown;

[0036] Figure 10The schematic diagram of the front cross-sectional structure of the baffle falling development of the material blocking monitoring assembly of the present application is shown in the figure.

[0037] Figure 11 The schematic diagram of the front cross-sectional structure of the replacement structure of the material blocking monitoring assembly of the present application is shown in the figure.

[0038] Figure 12 The schematic diagram of the front cross-sectional structure of the replacement structure of the material blocking monitoring assembly of the present application is shown in the figure.

[0039] Figure 13 The flow chart of the method for replacing the filter screen of the present application is shown in the figure.

[0040] In the figure: rack 1, first top plate 2, second top plate 3, first bottom plate 4, second bottom plate 5, third bottom plate 6, raw material bin 7, turbine-type airflow classifier 8, filtering mechanism 9, shell 91, bottom plate 92, cover plate 93, filter screen 94, baffle 95, square groove 96, material blocking monitoring assembly 97, mounting strip 971, fixing sleeve 972, connecting shaft 973, fixing strip 974, baffle 975, electric hydraulic cylinder 976, hydraulic rod 977, first connecting piece 978, movable rod 979, second connecting piece 9710, third baffle 9711, weight sensor 9712, first baffle 98, support assembly 99, rectangular frame 991, placement groove 992, flow guide plate 910, exhaust system 10, doser 11, ball mill 12, pneumatic conveying system 13, fourth bottom plate 14, storage bin 15. DETAILED DESCRIPTION

[0041] The present application will be described in detail below with specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made. These are within the scope of the present application.

[0042] It should be noted that the various features in the embodiments of the present application can be combined with each other without conflict, and are within the scope of protection of the present application. In addition, the terms and orientation descriptions used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0043] Unless otherwise defined, all technical and scientific terms used in the specification have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0044] The purpose of the application: solve the following problems of the current ball mill filter: 1) without timely replacement of filter material, it is easy to affect the filtering effect, or waste filter material. 2) the filter material is generally square as a whole, which is easy to cause waste of the rear part.

[0045] The core idea of the application: in the filtering equipment of the ball mill system, the filter material is divided into five independent groups, each group is provided with a long strip channel below, and a baffle is arranged on each channel, a weight measuring sensor is arranged below the baffle, which is used for sensing the weight of the filtered material on the baffle; a weight threshold w1 is set, when the weight exceeds w1, the baffle is opened to allow the material to fall. The purpose of the above setting is to know the total weight w1*n of the filtered material obtained by the number n of times of opening the baffle; in the test stage, the total amount of filtered material w1*n1 that can be obtained from the beginning of work to full load state in this process can be known by continuing to detect the pollution of the exhaust gas. Further, in the actual use process, when the filtered material reaches w1*n1, a warning is sent to remind the staff to replace the filter material. Further, the filter material can be set to trapezoidal instead of square; the trapezoidal shape can match the parabolic trajectory of the material entering from left to right; the upper part of the filter material of the rear groups is saved to avoid waste.

[0046] On the basis of the above: 1. Five channels can be set, and each channel is provided with a baffle, and each baffle is used to detect the weight on the current channel. 2. When the baffle reaches the preset threshold, it is set to open downward (open from one side downward) or double open (open from the middle, two doors open downward at the same time), preferably double open. Double open has shorter opening time, larger opening range, and is more beneficial to the falling of materials, and saves the falling time of materials. 3. When the baffle opens downward, a booster or a puller can be set. If the booster is set above the baffle, it provides a pushing force to help the baffle open downward; if the puller is set below the baffle, it provides a pulling force to help the baffle open downward. The purpose of such setting is to speed up the door opening speed and reduce the error influence of the device continuously working and continuously filtering materials during the door opening process. Similarly, when the baffle closes, a booster or a puller can be set. If the booster is set below the baffle, it provides a pushing force to help the baffle close upward; if the puller is set above the baffle, it provides a pulling force to help the baffle close upward. The purpose of such setting is to speed up the door closing speed and reduce the error influence of the device continuously working and continuously filtering materials during the door closing process. 4. The filter material is set to be trapezoidal; the filter material is divided into five groups, which can be five groups combined to be trapezoidal, or five groups of rectangles with decreasing height, and the midpoint connecting line forms a trapezoid. The latter is preferred because the filter material is made of a rectangle, which is simpler, and directly made into a trapezoid increases the process complexity.

[0047] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0048] Example 1:

[0049] Reference Figures 1-2As shown, a ball mill system with an optimized filtering structure is provided, which comprises a rack 1, a first top plate 2 and a second top plate 3 are mounted on the top of the rack 1, a first bottom plate 4, a second bottom plate 5, a third bottom plate 6 and a fourth bottom plate 14 are sequentially mounted from left to right in the middle of the rack 1, a raw material bin 7 and a turbo airflow classifier 8 are mounted on the upper end of the first top plate 2, the lower end of the raw material bin 7 penetrates through the first top plate 2 and is connected with a quantitative feeder 11, the quantitative feeder 11 is mounted on the upper end of the first bottom plate 4, a ball mill 12 is arranged at the bottom of the rack 1, the quantitative feeder 11 is connected with the ball mill 12 through a pipeline, the turbo airflow classifier 8 is connected with the ball mill 12 through two pipelines penetrating through the second bottom plate 5, a filtering mechanism 9 and an exhaust system 10 are mounted on the upper end of the third bottom plate 6, the exhaust system 10 is connected with the filtering mechanism 9 through a pipeline penetrating through the second top plate 3, one side of the turbo airflow classifier 8 is connected with the filtering mechanism 9 through a pipeline, the lower end of the filtering mechanism 9 is connected with a pneumatic conveying system 13 after penetrating through the third bottom plate 6, two storage bins 15 are jointly mounted between the second top plate 3 and the fourth bottom plate 14, the storage bins 15 are connected through a pipeline, one of the storage bins 15 is connected with the pneumatic conveying system 13 through a pipeline, the raw material is supplied through the raw material bin 7, the quantitative feeder 11 is used to quantitatively convey the raw material to the ball mill 12 for material crushing and grinding operation, at the same time, the turbo airflow classifier 8 conveys the dust and the crushed and ground material to the filtering mechanism 9 through two pipelines for filtering, after the dust is filtered through the filtering mechanism 9, the filtered material is conveyed to the storage bin 15 through the pipeline by the pneumatic conveying system 13 for collection, which is convenient for subsequent transportation and storage operations.

[0050] Reference Figures 3-10As shown, in one embodiment, the filtering mechanism 9 comprises a shell 91, a bottom plate 92, filter screens 94, partitions 95 and a material blocking monitoring assembly 97, the shell 91 is installed on the upper end of the third bottom plate 6, the lower end of the shell 91 penetrates the third bottom plate 6 and is connected to the bottom plate 92, the lower end of the bottom plate 92 is connected to the pneumatic conveying system 13, the inner cavity of the shell 91 is equidistantly provided with five groups of filter screens 94, the inner cavity of the shell 91 is equidistantly connected with four groups of partitions 95, the partitions 95 are located between the filter screens 94, one group of the partitions 95 is provided with a material blocking monitoring assembly 97 on one side, one group of the partitions 95 is provided with a material blocking monitoring assembly 97 on both sides, the material blocking monitoring assembly 97, a mounting strip 971, a fixing sleeve 972, a connecting shaft 973, a fixing strip 974, a baffle 975, an electric hydraulic cylinder 976, a hydraulic rod 977, a first connecting piece 978, a movable rod 979, a second connecting piece 9710 and a weight sensor 9712, the mounting strip 971 and the electric hydraulic cylinder 976 are installed on one side of three groups of the partitions 95 and on both sides of the other group of the partitions 95, the mounting strip 971 is integrally connected with two fixing sleeves 972 on one side, the fixing sleeves 972 are rotatably sleeved with the connecting shaft 973, the connecting shaft 973 is fixedly sleeved with the fixing strip 974 in the middle, the fixing strip 974 is integrally connected with the baffle 975, the baffle 975 is provided with a mounting groove at the lower end, the weight sensor 9712 is installed in the inner cavity of the mounting groove, the baffle 975 is provided with the second connecting piece 9710 at the lower end, the second connecting piece 9710 is movably connected with the movable rod 979 through a pin shaft, the upper end of the electric hydraulic cylinder 976 is connected with the first connecting piece 978 through the hydraulic rod 977, the first connecting piece 978 is connected with the movable rod 979 through a pin shaft, the upper end of the mounting strip 971 is connected with a third blocking strip 9711, and the mounting strip 971 and the third blocking strip 9711 are integrally designed.

[0051] In one embodiment, the first blocking strip 98 is installed on one side of three groups of the partitions 95 and on both sides of the inner cavity of the shell 91, the position of the first blocking strip 98 corresponds to the position of the third blocking strip 9711, and the upper end faces of the first blocking strip 98 and the third blocking strip 9711 are symmetrically inclined. Figure 10 As shown, the first blocking strip 98 and the third blocking strip 9711 are fixed on the inner wall of the shell 91.

[0052] In one embodiment, the support assembly 99 is installed between the partitions 95 and the inner wall of the shell 91, and the support assembly 99 comprises a rectangular frame 991 installed between the partitions 95 and the inner wall of the shell 91, and the upper end of the rectangular frame 991 is provided with a placing groove 992, the lower end of the five sets of filter screens 94 is inserted into the inner cavity of the placing groove 992, the upper end of the bottom plate 92 is symmetrically provided with a guide plate 910, the opposite side of the guide plate 910 is inclined, the upper end of the shell 91 is screwed with a cover plate 93, the upper end of the second top plate 3 is provided with a slot corresponding in position, and the outer side of the partition 95 is provided with a square groove 96, which is fixed with the inner wall of the shell 91 and hollow inside for material passing through. The filter screen 94 is inserted and installed through the placing groove 992 at the upper end of the rectangular frame 991 of the support assembly 99, and the cover plate 93 is detachably screwed with the shell 91, which facilitates the installation and removal of the filter screen 94, and facilitates the installation and replacement. Through the design of the square groove 96 on the outer side of the partition 95, the multiple filter screens 94 can filter the dust, effectively improving the filtering effect.

[0053] In one embodiment, the baffle 975 is designed by the material blocking monitoring assembly 97, and the weight sensor 9712 is installed in the mounting groove at the lower end of the baffle 975 for sensing the weight of the filtered material on the baffle 975. The weight sensor 9712 is programmed by an external controller to set a weight threshold w1. When the weight exceeds w1, the baffle 975 is opened to allow the material to fall and be transported by the pneumatic conveying system 13. The total weight of the filtered material w1*n is obtained by recording the number of times n that the baffle 975 is opened. In the test phase, the amount of filtered material obtained during the process from the beginning of work to full load can be determined by detecting the pollution of the exhaust gas. Then, when the amount of filtered material reaches w1*n during actual use, the external controller issues a warning to remind the worker to replace the filter screen 94. Thus, the filter screen 94 can be replaced in time, without being replaced too late to affect the filtering effect or too early to waste the filter screen 94.

[0054] In one embodiment, the first baffle 98 and the third baffle 9711 are located at the upper end of the baffle 975, and the upper end surfaces of the first baffle 98 and the third baffle 9711 are symmetrically inclined to prevent material from accumulating at the upper end of the first baffle 98 and the third baffle 9711. The first baffle 98 and the third baffle 9711 are attached to the two sides of the upper end of the baffle 975, effectively improving the sealing effect and preventing material leakage, which affects the data effect of the material blocking monitoring assembly 97 in the test phase and thus affects the subsequent use effect. The guide plates 910 installed at the upper end of the bottom plate 92 effectively prevent material accumulation, thereby effectively improving the effect of guiding and discharging the material.

[0055] Referring to Figures 4-5 As shown, the height of the five groups of filter screens 94 decreases from left to right, and the midpoints of the five groups of filter screens 94 form a trapezoidal shape, which is designed to match the parabolic trajectory of the material entering from left to right, thereby saving the upper part of the filtering material in the latter groups and avoiding waste, effectively improving the use effect. Figure 4 The design of the filter screen 94 is compared with Figure 5 the conventional filter screen 94, Figure 4 The midpoints of the five groups of rectangular filter screens 94 form a trapezoidal shape, which can match the parabolic trajectory of the material entering from left to right, thereby saving the upper part of the filtering material in the latter groups and avoiding waste, effectively improving the use effect.

[0056] In an embodiment, the baffle 975 can also be designed as a double-door structure, that is, the baffle 975 is divided into two door plates, as shown in Figures 11-12 As shown, a special-shaped plate is installed on the side of the inner wall of the shell 91 corresponding to the partition plate 95 and the side between the partition plates 95, and the special-shaped plate is designed in one body with a wedge-shaped strip and a square-shaped strip. The special-shaped plate is movably connected to the door plate through a hinge, and the lower end of the door plate is movably connected to the output end of the electric push rod through a hinge. The electric push rod is designed to be inclined, and the other end of the electric push rod is installed on the inner wall of the shell 91 or one side of the partition plate 95. In addition, a weight sensor 9712 is also installed in each of the two door plates, and the weight of the material accumulated on the door plates is detected in real time through the two weight sensors 9712. When the total weight detected by the two weight sensors 9712 exceeds a weight threshold w1, the door plates are opened to discharge the material. At this time, the output end of the electric push rod is retracted, and the output end drives the door plate to move downward and incline through the hinge. The door plates are quickly opened in a double-door manner, effectively making the opening range of the door plates larger in a short time, which is more conducive to the falling of the material and saves the falling time of the material, effectively improving the use effect.

[0057] It should be noted that the various figures in this embodiment are only examples and are not limiting. For example, the length of the electric hydraulic cylinder 976 and the output rod of the electric push rod can be longer, and the connection points can be closer to the partition plate 95, thereby making the opening gap of the baffle 975 larger and more prone to falling of the material.

[0058] Working principle: the filter system of the application is used, the filter screen 94 is inserted and installed on the placing groove 992 on the upper end of the rectangular frame 991 of the supporting assembly 99, and the cover plate 93 is detachably screwed with the shell 91, which facilitates the installation and removal of the filter screen 94, is convenient to install and replace, and the square groove 96 on the outer side of the partition plate 95 is designed, so that multiple filter screens 94 can filter dust, effectively improving the filtering effect, and five channels are formed between the four partition plates 95 and the shell 91, each channel is separately provided with a material blocking monitoring assembly 97, when the weight sensor 9712 at the lower end of the baffle 975 detects that the accumulated weight of the filtered material reaches the preset threshold w1, the external controller automatically opens the electric hydraulic cylinder 976, and then the hydraulic rod 977 at the upper end of the electric hydraulic cylinder 976 is lowered and shrunk, and the first connecting piece 978 at the upper end of the hydraulic rod 977 drives one end of the movable rod 979 to descend through the pin shaft, and the other end of the movable rod 979 also descends, and simultaneously drives the second connecting piece 9710 and the lower left side of the baffle 975 to tilt and move downward, facilitating the discharge of the material accumulated on the upper end of the baffle 975, when the material is discharged, the external controller opens the electric hydraulic cylinder 976 again, and then the hydraulic rod 977 at the upper end of the electric hydraulic cylinder 976 is raised, and the reverse operation is the same as above, so as to reset the end of the baffle 975 tilted downward, facilitating the accumulation of the filtered material, and effectively improving the door opening and closing speed, reducing the error influence of the device continuous working and continuous filtering material during the opening and closing of the door, according to the number n of times of opening the baffle 975, the total weight w1*n of the filtered material can be obtained; in the test stage, the pollution of the exhaust gas can be detected to know how much filtered material w1*n1 can be obtained in this process from the beginning of work to full load, and then in the actual use process, when the filtered material reaches w1*n1, the external controller issues a warning to remind the worker to replace the filter screen 94, so that the filter screen 94 can be replaced in time, which will not be too late to affect the filtering effect, nor too early to waste the filter screen 94. In one alternative, the midpoint connecting line of the five groups of rectangular filter screens 94 forms a trapezoidal shape, which can match the parabolic trajectory of the material entering from left to right, save the upper part of the subsequent filter material, avoid waste, and effectively improve the use effect.

[0059] Embodiment 2:

[0060] On the basis of the ball mill system with the optimized filter structure provided in the above embodiment 1, the embodiment 2 provides a method for replacing the filter screen, which comprises the following steps:

[0061] Step 100: The weight of the filtered material is monitored by the material blocking monitoring assembly 97, and the accumulated material is discharged whenever the accumulated weight of the filtered material reaches a preset threshold w1. The total weight of the filtered material is calculated as w1*n according to the recorded discharge times n.

[0062] Step 200: In the testing phase, the exhaust gas is detected for pollution, and the total weight of the filtered material w1*n1 is obtained when the exhaust gas is detected to be excessively polluted. The testing phase can be a test before the product is shipped, in which a new filter screen is used for filtering and the weight of the filtered material is calculated.

[0063] Step 300: In the application phase, the current discharge times n2 and the total weight of the filtered material w1*n2 are obtained after the accumulated material is discharged each time. When n2=n1 or w1*n2=w1*n1, an alarm is issued to replace the filter screen 94. The application phase is the actual use phase.

[0064] Specifically, referring to the description of the embodiment 1, each channel is provided with a material blocking monitoring assembly 97, which includes a blocking plate 975, a weight sensor 9712, an electric hydraulic cylinder 976, a hydraulic rod 977, a first connecting piece 978, a movable rod 979, and a second connecting piece 9710. When the weight sensor 9712 at the lower end of the blocking plate 975 detects that the accumulated weight of the filtered material reaches a preset threshold w1, the external controller automatically opens the electric hydraulic cylinder 976, and then the hydraulic rod 977 at the upper end of the electric hydraulic cylinder 976 is lowered and shrunk, and the first connecting piece 978 at the upper end of the hydraulic rod 977 drives one end of the movable rod 979 to be lowered through a pin shaft, and the other end of the movable rod 979 is also lowered and simultaneously drives the second connecting piece 9710 and the lower left side of the blocking plate 975 to be inclined and lowered, so as to facilitate the discharge of the material accumulated on the upper end of the blocking plate 975. When the material is discharged, the external controller opens the electric hydraulic cylinder 976 again, and then the hydraulic rod 977 at the upper end of the electric hydraulic cylinder 976 is raised, and the reverse operation is the same as the above, so as to reset the inclined and lowered end of the blocking plate 975, facilitate the accumulation of the filtered material, effectively improve the door opening and closing speed, reduce the error influence of the continuous working and filtering material of the device during the opening and closing of the door, and obtain the total weight w1*n of the filtered material according to the recorded number n of times of opening the blocking plate 975. In the test stage, the pollution of the discharged gas is detected to know how much filtered material w1*n1 can be obtained in the process from the beginning of work to the full load state, and then in the actual use process, when the filtered material reaches w1*n1, the external controller issues a warning to remind the worker to replace the filter screen 94, so that the filter screen 94 can be replaced in time, which will not be too late to affect the filtering effect, nor too early to waste the filter screen 94.

[0065] On the basis of the above-mentioned method for replacing the filter screen, the application further provides a device for implementing the above-mentioned method, which comprises one or more processors and a memory. The processor and the memory can be connected through a bus or other means. The memory, as a non-volatile computer readable storage medium, can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as the method for replacing the filter screen. The processor executes the various functions and data processing of the method for replacing the filter screen by running the non-volatile software programs, instructions and modules stored in the memory, that is, implements the above-mentioned method for replacing the filter screen.

[0066] The memory can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device. In some embodiments, the memory can optionally include a memory that is remotely located with respect to the processor, which can be connected to the processor through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0067] The program instructions / modules are stored in the memory, and when executed by one or more processors, perform the method of replacing the filter screen in the above-described embodiments, for example, perform the above-described method of replacing the filter screen. Figure 13 Each of the steps shown.

[0068] The above-described products can perform the method provided by the embodiments of the present application, have the corresponding function modules and beneficial effects of performing the method. Technical details not described in detail in the embodiments can refer to the method provided by the embodiments of the present application.

[0069] It should be noted that the apparatus embodiments described above are only schematic, and the units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., they can be located in one place, or distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments.

[0070] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be implemented by means of software plus a general hardware platform, and of course can also be implemented by hardware. Those skilled in the art can understand that all or part of the processes in the above-described embodiments can be completed by a computer program instructing related hardware, and the program can be stored in a computer readable storage medium, and when the program is executed, it can include the processes of the above-described embodiments. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0071] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not limited to them; under the idea of the present application, the technical features of the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for simplicity; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A ball mill system with optimized filtering arrangement, characterized by, The utility model relates to a kind of powder production line, including rack (1), the top of the rack (1) is equipped with first top plate (2) and second top plate (3), the middle part of the rack (1) is sequentially equipped with first bottom plate (4), second bottom plate (5), third bottom plate (6) and fourth bottom plate (14) from left to right, the upper end of the first top plate (2) is equipped with raw material bin (7) and turbine air classifier (8), the lower end of the raw material bin (7) is through first top plate (2) and is connected with doser (11), the doser (11) is installed in the upper end of first bottom plate (4), the bottom of the rack (1) is provided with ball mill (12), the doser (11) is connected with ball mill (12) by pipeline, the turbine air classifier (8) is connected with ball mill (12) respectively by two pipelines after being through second bottom plate (5), the upper end of the third bottom plate (6) is equipped with filter mechanism (9) and exhaust system (10), the exhaust system (10) is connected with filter mechanism (9) by pipeline after being through second top plate (3), one side of the turbine air classifier (8) is connected with filter mechanism (9) by pipeline, the lower end of the filter mechanism (9) is connected with pneumatic conveying system (13) after being through third bottom plate (6); The filter mechanism (9) includes housing (91), bottom plate (92), filter screen (94), baffle (95) and material blocking monitoring assembly (97), the housing (91) is installed in the upper end of third bottom plate (6), the lower end of the housing (91) is connected with bottom plate (92) after being through third bottom plate (6), the lower end of the bottom plate (92) is connected with pneumatic conveying system (13), the inner chamber of the housing (91) is equidistantly provided with five groups of filter screen (94), the inner chamber of the housing (91) is equidistantly connected with four groups of baffle (95), each baffle (95) is below between every two filter screen (94), wherein one group of material blocking monitoring assembly (97) is installed on one side of three groups of baffle (95), material blocking monitoring assembly (97) is installed on both sides of the last group of baffle (95). The material blocking monitoring assembly (97) comprises a mounting strip (971), a fixing sleeve (972), a connecting shaft (973), a fixing strip (974), a baffle (975), an electro-hydraulic cylinder (976), a hydraulic rod (977), a first connecting piece (978), a movable rod (979), a second connecting piece (9710) and a weight sensor (9712), one side of three of the partition plates (95) and both sides of the other partition plate (95) are provided with the mounting strip (971) and the electro-hydraulic cylinder (976), one side of the mounting strip (971) is integrally connected with two fixing sleeves (972), the fixing sleeves (972) are rotatably connected with the connecting shaft (973) in a sleeved manner, the middle part of the connecting shaft (973) is fixedly sleeved with the fixing strip (974), the fixing strip (974) is integrally connected with the baffle (975), the lower end of the baffle (975) is provided with a mounting groove, the inner cavity of the mounting groove is provided with the weight sensor (9712), the lower end of the baffle (975) is provided with the second connecting piece (9710), the second connecting piece (9710) is movably connected with the movable rod (979) through a pin shaft, the upper end of the electro-hydraulic cylinder (976) is connected with the first connecting piece (978) through the hydraulic rod (977), and the first connecting piece (978) is connected with the movable rod (979) through a pin shaft.

2. A ball mill system with an optimized filtering structure according to claim 1, characterized in that, The upper end of the mounting strip (971) is connected with a third blocking strip (9711), and the mounting strip (971) and the third blocking strip (9711) are integrally designed.

3. A ball mill system with an optimized filtering structure according to claim 2, characterized in that, The inner cavities of the shell (91) and one side of three of the partition plates (95) are provided with the first blocking strip (98), the first blocking strip (98) corresponds in position to the third blocking strip (9711), and the upper end faces of the first blocking strip (98) and the third blocking strip (9711) are symmetrically inclined.

4. A ball mill system with an optimized filtering structure according to claim 1, characterized in that, Support assemblies (99) are arranged between the partition plates (95) and the inner walls of the shell (91), and the support assemblies (99) comprise rectangular frames (991) arranged between the partition plates (95) and the inner walls of the shell (91), and the upper end of the rectangular frame (991) is provided with a placing groove (992), and the lower ends of five groups of the filter screens (94) are inserted into the inner cavities of the placing grooves (992).

5. A ball mill system with an optimized filtering structure according to claim 1, characterized in that, The upper end of the bottom plate (92) is symmetrically provided with the flow guide plate (910), and the corresponding sides of the flow guide plates (910) are inclined.

6. A ball mill system with an optimized filtering structure according to claim 1, characterized in that, The upper end of the shell (91) is screwed with the cover plate (93), and the upper end of the second top plate (3) is provided with a notch corresponding in position.

7. A ball mill system with an optimized filtering structure according to claim 1, characterized in that, The outer sides of the partition plates (95) are provided with square grooves (96).

8. A ball mill system with an optimized filtering structure according to claim 1, characterized in that, Two storage bins (15) are arranged between the second top plate (3) and the fourth bottom plate (14), the storage bins (15) are connected through pipelines, and one of the storage bins (15) is connected with the pneumatic conveying system (13) through a pipeline.

9. A method of replacing a filter screen, characterized by, The application of the ball mill system with the optimized filtering structure as claimed in any one of claims 1-8, the method comprises: The weight of the filtered material is monitored by the material blocking monitoring assembly (97), and the accumulated material is discharged whenever the accumulated weight of the filtered material reaches a preset threshold w1. The total weight of the filtered material is calculated as w1*n according to the recorded discharge times n. In the testing phase, the exhaust gas is detected for pollution, and the total weight of the filtered material at the time when the exhaust gas starts to exceed the standard is obtained as w1*n1. In the application phase, the current discharge times n2 and the total weight of the filtered material w1*n2 are obtained after the accumulated material is discharged each time. When n2=n1 or w1*n2=w1*n1, an alarm is issued to indicate that the filter screen (94) needs to be replaced.

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