Grinding system for removing fiber impurities

Abstract

The utility model relates to a grinding system for removing fiber impurities, and belongs to the field of grinding processing. Comprising a filtering and dust removing mechanism, a raw material bin used for providing raw materials, a material grinding main machine used for grinding the raw materials, a grading machine used for grading powder ground into powder with multi-stage particle sizes, and a material collecting and dust removing device used for conducting gas-powder separation on the powder with fiber impurities filtered out and conducting sedimentation and subpackaging. The air blower is used for providing power for the movement of the powder in the system; the feeder is used for transferring the raw materials from the raw material bin to the grinding main machine; the two ends of the feeder are connected with the raw material bin and the grinding main machine in a one-to-one correspondence mode, the grinding main machine is connected with the classifier, the two ends of the filtering dust removal mechanism are connected with the classifier and the receiving dust remover in a one-to-one correspondence mode, and the end, away from the classifier, of the receiving dust remover is connected with the air blower. According to the utility model, powder and fiber impurities with the particle size larger than the target particle size can be separated out, and the fineness reliability and the high-purity requirement of powder products are ensured.

Description

Technical Field

[0001] The utility model relates to the field of grinding processing, in particular to a grinding system for removing fiber impurities. Background Art

[0002] With the continuous development of new material technology and new processes, various types of powders are being used in more and more fields or industries. The market prospects for powder materials are very broad. As solid raw materials and powder processing equipment in powder state, the demand for various fine powders is also growing. At present, one of the main challenges facing powder processing technology is that the stable product quality of powder processing has continuously improved the requirements for product purity, which requires the continuous improvement of fine crushing and fine classification equipment. Take quartz powder granulation production as an example. Due to the mining, transportation, crushing and grinding of ore, some residual fine fibers or coarse particles are difficult to be cleaned out. These impurities seriously affect the subsequent granulation and other applications. At present, there is no dry equipment that can be used to remove these fine fibers in the grinding production system, which greatly affects the application effect of this type of powder.

[0003] After years of introduction, digestion and absorption, the traditional roller mill and its grinding system have become more mature and their technical advantages have become increasingly prominent. It integrates crushing, drying, grinding, grading and conveying, has high production efficiency, and can grind block, granular and powdered raw materials into the required powdered materials. The roller mill and its grinding system have simple process flow, compact layout and small building area, and are widely used in cement, electricity, metallurgy, chemical industry, non-metallic minerals and other industries. However, these grinding systems have some common problems, that is, they are easily affected by feed fluctuations, pulse dust collector resistance fluctuations and fan performance fluctuations, resulting in fluctuations in grading accuracy, and the fineness of the finished product is prone to fluctuations and the contamination of the finished powder by fiber impurities. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a grinding system for removing fiber impurities, in which powder and fiber impurities larger than the target particle size are separated.

[0005] The utility model solves the above-mentioned technical problems with the following technical solutions: a grinding system for removing fiber impurities, comprising: a filtering and dust removal mechanism, a raw material bin for providing raw materials, an abrasive main machine for grinding the raw materials, a classifier for classifying powders ground into multi-level particle sizes, a receiving dust collector for performing air-powder separation and sedimentation and packaging of the powders from which the fiber impurities have been filtered out, a blower for providing power for the movement of the powders in the system, and a feeder for transporting the raw materials from the raw material bin to the abrasive main machine; the two ends of the feeder are connected to the raw material bin and the abrasive main machine in a one-to-one manner, the abrasive main machine is connected to the classifier, the two ends of the filtering and dust removal mechanism are connected to the classifier and the receiving dust collector in a one-to-one manner, and the end of the receiving dust collector away from the classifier is connected to the blower.

[0006] The beneficial effects of the utility model are as follows: the filtering and dust removal mechanism is conducive to timely filtering and removing powder and fiber impurities larger than the target particle size in the grinding system, avoiding the product powder being unqualified due to coarse fineness or residual fiber impurities, and ensuring the fineness reliability and high purity requirements of the powder product.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the filtering and dust removal mechanism includes: a steel frame shell, a discharge bin, multiple air inlet conversion valves, multiple air outlet conversion valves, a discharge valve, multiple filter screens and a support frame; the discharge bin is a conical shell structure arranged at the lower end of the steel frame shell, the discharge valve is arranged at the bottom outlet of the discharge bin, the steel frame shell is installed on the support frame, the air inlet conversion valve and the air outlet conversion valve are arranged one by one at both ends of the steel frame shell, and the filter screen is detachably arranged inside the steel frame shell.

[0009] The beneficial effects of adopting the above further scheme are: the air inlet conversion valve and the air outlet conversion valve are conducive to controlling the air carrying powder coming out of the classifier to enter the steel frame shell for filtration, and enter the material receiving dust collector after filtration; the filter net is conducive to timely filtering and removing powder and fiber impurities larger than the target particle size, and storing them in the unloading bin; the unloading valve is conducive to releasing the impurities filtered out of the unloading bin from the unloading bin.

[0010] Furthermore, the interior of the steel frame shell is divided into multiple filter compartments by a partition plate, and the multiple filter nets are detachably arranged in the multiple filter compartments, respectively. The multiple air intake conversion valves correspond one-to-one to the multiple filter compartments, and the multiple air outlet conversion valves correspond one-to-one to the multiple filter compartments.

[0011] The beneficial effect of adopting the above further scheme is that multiple air inlet conversion valves and multiple air outlet conversion valves are conducive to allowing the powder coming out of the classifier to enter different filter bins for filtration, so that multiple filter bins work in turn, thereby improving the efficiency of powder filtration. At the same time, it can also avoid the paralysis of the entire system due to failure of some components in the filtering and dust removal mechanism, thereby improving the stability of the grinding system.

[0012] Furthermore, in the filter bin, the plurality of filter screens are arranged in a folded line.

[0013] The beneficial effect of adopting the above further solution is that the multiple filter screens are arranged in a folded line, which is conducive to increasing the filtering times of the powder material, thereby improving the filtering effect.

[0014] Furthermore, the air inlet switching valve and the air outlet switching valve are connected to the classifier and the material receiving dust collector in a one-to-one correspondence through pipelines.

[0015] The beneficial effect of adopting the above further scheme is that the air inlet conversion valve is conducive to conveying the powder in the classifier to different filter bins for filtering, and the air outlet conversion valve is conducive to outputting the filtered powder in different filter bins to the receiving dust collector.

[0016] Furthermore, the filtering and dust removal mechanism also includes a cleaning component, which is arranged above the steel frame shell and corresponds to the filter screen.

[0017] The beneficial effect of adopting the above further solution is that the dust cleaning component is helpful to remove the impurities adhering to the filter screen into the discharge bin, thereby ensuring the filtering effect.

[0018] Furthermore, the cleaning component includes: a high-pressure air pump, a mounting frame, a first air outlet pipe and a plurality of second air outlet pipes; the mounting frame is arranged on the upper end side wall of the steel frame shell, the high-pressure air pump is installed on the mounting frame, and the generated high-pressure gas is injected into the first air outlet pipe, and the plurality of second air outlet pipes are installed on the first air outlet pipe, and respectively correspond to the plurality of filter screens.

[0019] The beneficial effect of adopting the above further solution is that the high-pressure air pump is conducive to generating high-pressure gas, and spraying the high-pressure gas onto the filter screen through the first air outlet pipe and the second air outlet pipe, thereby cleaning the impurities adhering to the filter screen.

[0020] Furthermore, the filtering and dust removal mechanism also includes a plurality of air hammers, which are arranged around the circumferential side wall of the unloading bin.

[0021] The beneficial effect of adopting the above further solution is that the air hammer is helpful to promote the flow of powder in the discharge bin through knocking and vibration when impurities or powder in the discharge bin do not flow smoothly.

[0022] Furthermore, the filter net is a steel wire net or a mesh structure made of water-repellent and breathable fiber fabric after coating, and the mesh size of the filter net is smaller than the size of the fiber impurities.

[0023] The beneficial effect of adopting the above further solution is that the coating treatment is helpful to prevent the powder with a certain water content from adhering to the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a grinding system provided by an embodiment of the utility model;

[0025] Figure 2 This is the front view of the filtering and dust removal mechanism of the utility model;

[0026] Figure 3 This is a top view of the filter and dust removal mechanism of the utility model;

[0027] Figure 4 It is a side view of the filtering and dust removal mechanism of the utility model.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Filtering and dust removal mechanism; 2. Raw material bin; 3. Abrasive main machine; 4. Classifier; 5. Material collecting dust collector; 6. Blower; 7. Feeder; 11. Steel frame shell; 12. Unloading bin; 13. Air inlet conversion valve; 14. Air outlet conversion valve; 15. Unloading valve; 16. Filter screen; 17. Dust cleaning component; 18. Air hammer; 19. Support frame; 111. Filter bin; 112. Partition plate; 171. High-pressure air pump; 172. Mounting frame; 173. First air outlet pipe; 174. Second air outlet pipe. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] like Figure 1As shown, a grinding system for removing fiber impurities comprises: a filtering and dust removing mechanism 1, a raw material bin 2 for providing raw materials, an abrasive main machine 3 for grinding the raw materials, a classifier 4 for classifying the powder ground into multiple particle sizes, a receiving dust collector 5 for performing air-powder separation and sedimentation and packaging of the powder from which the fiber impurities have been filtered out, a blower 6 for providing power for the movement of the powder in the system, and a feeder 7 for transporting the raw materials from the raw material bin 2 to the abrasive main machine 3; the two ends of the feeder 7 are connected to the raw material bin 2 and the abrasive main machine 3 in a one-to-one manner, the abrasive main machine 3 is connected to the classifier 4, the two ends of the filtering and dust removing mechanism 1 are connected to the classifier 4 and the receiving dust collector 5 in a one-to-one manner, and the end of the receiving dust collector 5 away from the classifier 4 is connected to the blower 6.

[0032] It should be noted that: in a preferred embodiment of the present invention, the abrasive main machine 3 and the blower 6 are connected via a pipeline, so that a gas circulation is formed in the entire grinding system.

[0033] The beneficial effects of the utility model are as follows: the filtering and dust removal mechanism is conducive to timely filtering and removing powder and fiber impurities larger than the target particle size in the grinding system, avoiding the product powder being unqualified due to coarse fineness or residual fiber impurities, and ensuring the fineness reliability and high purity requirements of the powder product.

[0034] Preferably, Figures 2 to 4 As shown, the filtering and dust removal mechanism 1 includes: a steel frame shell 11, a discharge bin 12, a plurality of air inlet conversion valves 13, a plurality of air outlet conversion valves 14, a discharge valve 15, a plurality of filter screens 16 and a support frame 19; the discharge bin 12 is a conical shell structure arranged at the lower end of the steel frame shell 11, the discharge valve 15 is arranged at the bottom outlet of the discharge bin 12, the steel frame shell 11 is installed on the support frame 19, the air inlet conversion valve 13 and the air outlet conversion valve 14 are arranged at both ends of the steel frame shell 11 in a one-to-one correspondence, and the filter screen 16 is detachably arranged inside the steel frame shell 11.

[0035] The beneficial effects of adopting the above-mentioned preferred scheme are: the air inlet conversion valve and the air outlet conversion valve are conducive to controlling the air carrying powder coming out of the classifier to enter the steel frame shell for filtration, and enter the material receiving dust collector after filtration; the filter net is conducive to timely filtering and removing powder and fiber impurities larger than the target particle size, and storing them in the unloading bin; the unloading valve is conducive to releasing the impurities filtered out of the unloading bin from the unloading bin.

[0036] Preferably, Figures 2 to 4As shown, the interior of the steel frame shell 11 is divided into multiple filter chambers 111 by a partition plate 112, and the multiple filter nets 16 are detachably arranged in the multiple filter chambers 111, respectively, the multiple air intake conversion valves 13 correspond one-to-one to the multiple filter chambers 111, and the multiple air outlet conversion valves 14 correspond one-to-one to the multiple filter chambers 111.

[0037] The beneficial effect of adopting the above-mentioned preferred scheme is that multiple air inlet conversion valves and multiple air outlet conversion valves are conducive to allowing the powder coming out of the classifier to enter different filter bins for filtration, so that multiple filter bins work in turn, thereby improving the efficiency of filtering the powder. At the same time, it can also avoid the paralysis of the entire system due to failure of some components in the filtering and dust removal mechanism, thereby improving the stability of the grinding system.

[0038] Preferably, Figures 2 to 4 As shown, in the filter chamber 111 , the plurality of filter screens 16 are arranged in a folded line.

[0039] The beneficial effect of adopting the above preferred solution is that the multiple filter screens are arranged in a folded line, which is conducive to increasing the filtering times of the powder material, thereby improving the filtering effect.

[0040] Preferably, Figures 2 to 4 As shown, the air inlet switching valve 13 and the air outlet switching valve 14 are connected to the classifier 4 and the receiving dust collector 5 in a one-to-one correspondence through pipelines.

[0041] The beneficial effects of adopting the above preferred scheme are: the air inlet conversion valve is conducive to conveying the powder in the classifier to different filter bins for filtration, and the air outlet conversion valve is conducive to outputting the filtered powder in different filter bins to the receiving dust collector.

[0042] Preferably, Figures 2 to 4 As shown, the filtering and dust removal mechanism 1 also includes a cleaning component 17 , which is arranged above the steel frame shell 11 and corresponds to the filter screen 16 .

[0043] The beneficial effect of adopting the above preferred solution is that the cleaning component is conducive to removing impurities adhering to the filter screen into the discharge bin, thereby ensuring the filtering effect.

[0044] Preferably, Figures 2 to 4 As shown, the cleaning component 17 includes: a high-pressure air pump 171, a mounting frame 172, a first air outlet pipe 173 and a plurality of second air outlet pipes 174; the mounting frame 172 is arranged on the upper end side wall of the steel frame shell 11, the high-pressure air pump 171 is installed on the mounting frame 172, and the generated high-pressure gas is injected into the first air outlet pipe 173, and a plurality of second air outlet pipes 174 are installed on the first air outlet pipe 173, and respectively correspond to the plurality of filter screens 16.

[0045] Among them, it should be noted that: Figure 3 As shown, in one of the filter bins 111, among the multiple filter screens 16 forming a fold line, a second air outlet pipe 174 is arranged between two of the filter screens 16, and in a preferred embodiment of the utility model, a high-pressure nozzle is arranged on the second air outlet pipe 174, so as to increase the pressure of the gas when it is sprayed from the second air outlet pipe 174 to the filter screen 16, which is more conducive to cleaning impurities adhering to the filter screen 16.

[0046] The beneficial effect of adopting the above preferred solution is that the high-pressure air pump is conducive to generating high-pressure gas, and spraying the high-pressure gas onto the filter screen through the first air outlet pipe and the second air outlet pipe, thereby cleaning the impurities adhering to the filter screen.

[0047] Preferably, Figures 2 to 4 As shown, the filtering and dust removal mechanism 1 further includes a plurality of air hammers 18 , and the plurality of air hammers 18 are arranged around the circumferential side wall of the discharge bin 12 .

[0048] The beneficial effect of adopting the above preferred solution is that the air hammer is helpful to promote the flow of powder in the discharge bin through knocking and vibration when impurities or powder in the discharge bin do not flow smoothly.

[0049] Preferably, the filter screen 16 is a steel wire mesh or a mesh structure made of water-repellent and breathable fiber fabric after coating, and the mesh size of the filter screen 16 is smaller than the size of the fiber impurities.

[0050] It should be noted that the water-repellent and breathable fiber fabric is made of polypropylene fiber or polyester fiber.

[0051] The beneficial effect of adopting the above preferred solution is that the coating treatment is helpful to prevent the powder with a certain water content from adhering to the filter screen.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A grinding system for removing fiber impurities, characterized in that: include: A filtering and dust removal mechanism (1), a raw material bin (2) for providing raw materials, an abrasive main machine (3) for grinding the raw materials, a classifier (4) for classifying the powdered materials having multiple particle sizes after being ground, a material collecting and dust removal device (5) for performing air-powder separation and sedimentation and packaging of the powdered materials after filtering out fiber impurities, a blower (6) for providing power for the movement of the powdered materials in the system, and a feeder (7) for transferring the raw materials from the raw material bin (2) to the abrasive main machine (3); The two ends of the feeder (7) are connected to the raw material bin (2) and the abrasive main machine (3) in a one-to-one correspondence, the abrasive main machine (3) is connected to the classifier (4), the two ends of the filtering and dust removal mechanism (1) are connected to the classifier (4) and the receiving dust collector (5) in a one-to-one correspondence, and the end of the receiving dust collector (5) away from the classifier (4) is connected to the blower (6).

2. A grinding system for removing fiber impurities according to claim 1, characterized in that: The filtering and dust removal mechanism (1) comprises: a steel frame shell (11), a discharge bin (12), a plurality of air intake conversion valves (13), a plurality of air outlet conversion valves (14), a discharge valve (15), a plurality of filter screens (16) and a support frame (19); the discharge bin (12) is a conical shell structure arranged at the lower end of the steel frame shell (11); the discharge valve (15) is arranged at the bottom outlet of the discharge bin (12); the steel frame shell (11) is mounted on the support frame (19); the air intake conversion valve (13) and the air outlet conversion valve (14) are arranged at two ends of the steel frame shell (11) in a one-to-one correspondence; and the filter screen (16) is detachably arranged inside the steel frame shell (11).

3. A grinding system for removing fiber impurities according to claim 2, characterized in that: The interior of the steel frame housing (11) is divided into a plurality of filter chambers (111) by a partition plate (112); the plurality of filter screens (16) are detachably arranged in the plurality of filter chambers (111); the plurality of air intake conversion valves (13) correspond one-to-one to the plurality of filter chambers (111); and the plurality of air outlet conversion valves (14) correspond one-to-one to the plurality of filter chambers (111).

4. A grinding system for removing fiber impurities according to claim 3, characterized in that: In the filter chamber (111), a plurality of filter screens (16) are arranged in a folded line.

5. A grinding system for removing fiber impurities according to claim 2, characterized in that: The air inlet conversion valve (13) and the air outlet conversion valve (14) are connected to the classifier (4) and the material receiving dust collector (5) in a one-to-one correspondence through pipelines.

6. A grinding system for removing fiber impurities according to claim 2, characterized in that: The filtering and dust removal mechanism (1) further comprises a cleaning component (17), wherein the cleaning component (17) is arranged above the steel frame shell (11) and corresponds to the filter screen (16).

7. A grinding system for removing fiber impurities according to claim 6, characterized in that: The cleaning component (17) includes: a high-pressure air pump (171), a mounting frame (172), a first air outlet pipe (173) and a plurality of second air outlet pipes (174); the mounting frame (172) is arranged on the upper end side wall of the steel frame shell (11), the high-pressure air pump (171) is installed on the mounting frame (172), and the generated high-pressure gas is injected into the first air outlet pipe (173), and the plurality of second air outlet pipes (174) are installed on the first air outlet pipe (173) and respectively correspond to the plurality of filter screens (16).

8. A grinding system for removing fiber impurities according to claim 2, characterized in that: The filtering and dust removal mechanism (1) further comprises a plurality of air hammers (18), wherein the plurality of air hammers (18) are arranged around the circumferential side wall of the discharge bin (12).

9. A grinding system for removing fiber impurities according to claim 2, characterized in that: The filter net (16) is a steel wire net or a mesh structure made of water-repellent and breathable fiber fabric after being coated, and the mesh size of the filter net (16) is smaller than the size of the fiber impurities.

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