Superfine grinding system

Abstract

The utility model discloses a superfine grinding system which comprises a batching warehouse, a grinding machine and a powder concentrator, and the powder concentrator is provided with a qualified product discharge port and an unqualified product discharge port; a discharge port of the batching warehouse is respectively connected to a feed port of the mill and a feed port of the powder concentrator through pipelines; a discharging port of the grinding machine is connected to a feeding port of the powder selecting machine through a pipeline, an unqualified product discharging port of the powder selecting machine is connected to the feeding port of the grinding machine through a pipeline, the ultrafine grinding system has two working states, direct grinding of materials can be achieved, powder selecting can be conducted firstly, qualified micro powder is selected away firstly, and the grinding efficiency is improved. And unqualified materials enter the mill again for milling, selection can be carried out according to the conditions of the materials, the power consumption of the mill can be reduced, the milling efficiency can be improved, and more energy can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding design, in particular to an ultrafine grinding system. Background Art

[0002] The conventional way of material grinding is that all incoming materials enter the mill, and after being ground by the mill, they enter the powder selection system to select qualified micro powders, and unqualified powders return to the mill. However, the incoming materials are often mixed with qualified micro powders, which will also enter the tube mill for grinding, increasing the power consumption of the tube mill and affecting the efficiency of grinding. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an ultrafine grinding system, including a batching warehouse, a grinder and a powder classifier, wherein the powder classifier is provided with a qualified product discharge port and a unqualified product discharge port;

[0004] The discharge port of the batching warehouse is connected to the feed port of the grinding mill and the feed port of the powder concentrator through pipelines respectively;

[0005] The discharge port of the mill is connected to the feed port of the powder selector through a pipeline, and the unqualified product discharge port of the powder selector is connected to the feed port of the mill through a pipeline.

[0006] In the first state, the material is first transported from the batching warehouse to the mill, and then ground by the mill. The ground material is transported to the feed inlet of the powder selector through the discharge port of the mill through a pipeline, and then powder is selected in the powder selector. The qualified material is discharged through the qualified product discharge port for collection, and the unqualified material is transported to the feed inlet of the mill through the pipeline through the unqualified product discharge port for grinding again.

[0007] In the second state, the material enters the powder selector from the batching warehouse to screen out qualified powder, which is discharged through the qualified product outlet for collection, and the unqualified powder enters the mill through the unqualified product outlet through the pipeline for grinding;

[0008] In the second state, qualified products in the raw materials can be selected by the powder selector to avoid qualified products entering the mill to increase energy consumption and reduce production efficiency.

[0009] Preferably, the ultrafine grinding system further comprises a tail dust collector, which is respectively connected to one end of the discharge port of the mill and the feed port of the powder selector.

[0010] The materials collected by the dust collector at the tail of the mill are also sent to the powder classifier for powder selection to avoid environmental pollution and material waste.

[0011] Preferably: the ultrafine grinding system further comprises a first chute and a second chute, one end of the first chute is connected to the discharge ports of the mill and the mill tail dust collector respectively through a pipeline, and the other end is connected to the feed port of the powder selector through a pipeline, and both ends of the second chute are connected to the unqualified product discharge port of the powder selector and the feed port of the mill respectively through pipelines;

[0012] The first chute and the second chute are both provided with iron removal devices for removing iron from the materials transported through the chute.

[0013] On the one hand, the iron removal device on the first chute helps to reduce iron impurities in the product and improve product purity and quality. On the other hand, together with the iron removal device on the second chute, it can effectively remove Fe from the material, optimize the grinding effect and improve the grinding efficiency.

[0014] Preferably, the ultrafine grinding system further comprises a powder selection dust collector, and the powder selection dust collector is connected to the qualified product discharge port of the powder selection machine through a pipeline.

[0015] Preferably: the ultrafine grinding system further comprises a third chute, a fourth chute and a fourth chute dust collector, the qualified materials after dust removal by the powder selection dust collector are transported to the fourth chute via the third chute, the fourth chute transports the qualified materials to a qualified material collection point, and the fourth chute dust collector is arranged at one end of the fourth chute away from the third chute.

[0016] Preferably: the powder selection dust collector is provided with a powder selection dust removal fan and a powder selection dust removal tower, the air inlet of the powder selection dust removal fan is connected to the powder selection dust collector through a pipeline, and the air outlet is respectively connected to the powder selection dust removal tower and the feed inlet of the powder selection machine through pipelines.

[0017] The powder material contained in the gas blown out from the air outlet of the powder selection and dust removal fan continues to return to the powder selection machine for powder selection, avoiding discharge into the air to affect the environment and also avoiding material waste. After being connected to the powder selection machine through a pipeline, there is no need to set up an additional dust collection device.

[0018] Preferably: the ultrafine grinding system further comprises a tail mill elevator, the feed port of the tail mill elevator is respectively connected to the discharge ports of the mill and the tail mill dust collector through pipelines, and the discharge port of the tail mill elevator is connected to the first chute through a pipeline.

[0019] Preferably: the mill tail dust collector is provided with a mill tail dust removal fan and a mill tail dust removal tower, the air inlet of the mill tail dust removal fan is connected to the mill tail dust collector through a pipeline, and the air outlet is connected to the mill tail dust removal tower through a pipeline.

[0020] In a specific implementation, the air outlet of the dust removal fan at the end of the grinding mill can also be connected to the feed port of the powder classifier at the same time to prevent dust from being discharged into the air and affecting the environment, and also to avoid material waste.

[0021] Preferably: the ultrafine grinding system further comprises a product elevator, the feed port of the product elevator is connected to the fourth chute, and is used to transport the qualified materials output through the fourth chute to a qualified material collection point.

[0022] Preferably: a batching warehouse dust collector is provided on the batching warehouse.

[0023] Technical effects and advantages of the utility model:

[0024] (1) This ultrafine grinding system has two working states. It can realize direct grinding of materials and can also realize powder selection. Qualified micro powders are selected first, and unqualified ones are then put into the mill for grinding. It can be selected according to the material conditions, which is beneficial to reduce the power consumption of the mill, and then help improve the grinding efficiency and save energy.

[0025] (2) This ultrafine grinding system is equipped with an iron removal device on the third chute between the mill discharge port and the powder selector and on the fourth chute between the unqualified product discharge port of the powder selector and the mill feed port. These devices can effectively remove iron impurities in the product to ensure product quality. Furthermore, reducing the iron content is conducive to further improving the powder effect and powder efficiency.

[0026] (3) In this ultrafine grinding system, the air outlet of the powder selection and dust removal fan is connected not only to the dust removal tower, but also to the feed port of the powder selection machine, so that the powder material contained in the blown gas continues to return to the powder selection machine for powder selection, avoiding discharge into the air to affect the environment and also avoiding material waste. After being connected to the powder selection machine through a pipeline, there is no need to set up an additional dust collection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the ultrafine grinding system provided in the embodiment of the present application.

[0028] In the figure: 1. batching warehouse; 2. grinding mill; 3. powder selection machine; 31. qualified product discharge port; 32. unqualified product discharge port; 4. dust collector at the end of grinding mill; 41. dust removal fan at the end of grinding mill; 42. dust removal tower at the end of grinding mill; 5. first chute; 51. iron removal device; 6. second chute; 7. powder selection dust collector; 71. dust removal fan at the end of grinding mill; 72. dust removal tower at the end of grinding mill; 8. third chute; 9. fourth chute; 10. dust collector at the fourth chute; 11. elevator at the end of grinding mill; 12. product elevator; 13. dust collector at batching warehouse. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0030] See also Figure 1 As shown, in this embodiment, an ultrafine grinding system is provided, including a batching warehouse 1, a mill 2 and a powder selector 3, the batching warehouse 1 and the mill 2 both have a feed port and a discharge port, and the powder selector 3 is provided with a qualified product discharge port 31 and a failed product discharge port 32; the discharge port of the batching warehouse 1 is respectively connected to the feed port of the mill 2 and the feed port of the powder selector 3 through a pipeline, so as to transport materials into the mill 2 and / or the powder selector 3; the discharge port of the mill 2 is connected to the feed port of the powder selector 3 through a pipeline, so as to transport the powdered materials to the powder selector 3 for powder selection; the failed product discharge port 32 of the powder selector 3 is connected to the feed port of the mill 2 through a pipeline, so as to transport the failed powder selection materials back to the mill 2 for further powdering.

[0031] It has two working states, which can realize direct grinding of materials and can also realize powder selection first. Qualified micro powders are selected first, and unqualified ones are then put into the mill 2 for grinding. It can be selected according to the situation of the materials, which is beneficial to reduce the power consumption of the mill 2, and then help to improve the grinding efficiency and save more energy.

[0032] In this embodiment, the mill 2 is a tube mill.

[0033] Furthermore, a batching warehouse dust collector 13 is provided on the batching warehouse 1 to control dust in the batching warehouse 1, avoid environmental pollution, and prevent dust explosion.

[0034] In this embodiment, the ultrafine grinding system further includes a tail dust collector 4, which is connected to one end of the discharge port of the mill 2 and the feed port of the powder selector 3 respectively.

[0035] The tail dust collector 4 is provided to filter the waste gas generated by the mill 2 and discharge it. The filtered and collected powder is continuously input into the powder classifier 3 through a pipeline to participate in powder selection, thereby avoiding waste.

[0036] In this embodiment, the ultrafine grinding system also includes a first chute 5 and a second chute 6, one end of the first chute 5 is connected to the discharge ports of the mill 2 and the tail dust collector 4 through a pipeline, and the other end is connected to the feed port of the powder selector 3 through a pipeline, so that the material output from the mill 2 after powdering and the material collected after dust removal by the tail dust collector 4 are transported to the powder selector 3 for powder selection through the first chute 5; the two ends of the second chute 6 are connected to the unqualified product discharge port 32 of the powder selector 3 and the feed port of the mill 2 through pipelines, so that the unqualified materials can be transported back to the mill 2 for further grinding.

[0037] Furthermore, both the first chute 5 and the second chute 6 are provided with an iron removal device 51 for removing iron from the material transmitted through the chute, which can effectively remove iron-containing impurities in the material, not only reducing the wear of the iron on the mill 2, reducing the load of the mill 2, and improving the powder efficiency, but also after removing the iron impurities with higher hardness, it can effectively improve the grinding efficiency and reduce the energy consumption in the grinding process. In addition, it can also effectively improve the product quality, avoid the adverse effects of iron impurities on the quality and activity of the micropowder, and ensure the product quality and stability.

[0038] In this embodiment, the ultrafine grinding system further includes a powder selection dust collector 7, which is connected to the qualified product discharge port 31 of the powder selection machine 3 through a pipeline. The powder selection machine 3 generates a large amount of dust during the powder selection process. The connection of the powder selection dust collector 7 can effectively control dust and reduce dust pollution. At the same time, the dust generated by the powder selection machine 3 can be collected and separated to prevent the dust from being mixed into the product and affecting the purity and quality of the product.

[0039] In this embodiment, the ultrafine grinding system also includes a third chute 8, a fourth chute 9 and a fourth chute dust collector 10. One end of the third chute 8 is connected to the discharge port of the powder selection dust collector 7, and the other end is connected to one end of the fourth chute 9. The qualified materials after dust removal by the powder selection dust collector 7 are transported to the fourth chute 9 via the third chute 8, and the fourth chute 9 transports the qualified materials to the qualified material collection point. The fourth chute dust collector 10 is arranged at one end of the fourth chute 9 away from the third chute 8 for dust removal.

[0040] Furthermore, a powder selection dust removal fan 71 and a powder selection dust removal tower 72 are provided on the powder selection dust collector 7. The powder selection dust removal fan 71 has an air inlet and an air outlet. The air inlet of the powder selection dust removal fan 71 is connected to the powder selection dust collector 7 through a pipeline, and the air outlet of the powder selection dust removal fan 71 is respectively connected to the powder selection dust removal tower 72 and the feed inlet of the powder selection machine 3 through pipelines.

[0041] In addition to being connected to the powder selection and dust removal tower 72, the air outlet of the powder selection and dust removal fan 71 is also connected to the feed port of the powder selection machine 3, so that the powder material contained in the blown gas continues to return to the powder selection machine 3 for powder selection, avoiding discharge into the air to affect the environment and also avoiding material waste. After being connected to the powder selection machine 3 through a pipeline, there is no need to set up an additional dust collection device.

[0042] In this embodiment, the dust collectors involved include a mill tail dust collector 4, a powder selection dust collector 7, a fourth chute dust collector 10, a batching warehouse dust collector 13, etc., all of which are bag dust collectors.

[0043] In this embodiment, the ultrafine grinding system also includes a tail mill elevator 11, which has a feed port located at a low position and a discharge port located at a high position. The feed port of the tail mill elevator 11 is connected to the discharge ports of the mill 2 and the tail mill dust collector 4 through pipelines, respectively. The discharge port of the tail mill elevator 11 is connected to the first chute 5 through a pipeline, so that the materials discharged from the mill 2 and the tail mill dust collector 4 are transported upward to the first chute 5, and then transported to the powder selector 3 for powder selection.

[0044] Furthermore, a mill tail dust collector 4 is provided with a mill tail dust removal fan 41 and a mill tail dust removal tower 42. The mill tail dust removal fan 41 has an air inlet and an air outlet. The air inlet of the mill tail dust removal fan 41 is connected to the mill tail dust collector 4 through a pipeline, and the air outlet is connected to the mill tail dust removal tower 42 through a pipeline.

[0045] In the embodiment, the air outlet of the mill tail dust removal fan 41 is not only connected to the mill tail dust removal tower 42, but also can be connected to the feed port of the mill tail elevator 11 to avoid waste.

[0046] In this embodiment, the ultrafine grinding system also includes a product elevator 12, which has a feed port located at a low position and a discharge port located at a high position. The feed port of the product elevator 12 is connected to the fourth chute 9, and is used to transport the qualified materials output through the fourth chute 9 to the qualified material collection point.

[0047] In the first state, the material is first transported from the batching warehouse 1 to the mill 2, and the material is ground by the mill 2. After the ground material enters the first chute 5 through the mill tail elevator 11, it is ironed by the iron removal device 51 and then enters the powder selector 3 for powder selection. The qualified powder enters the powder selection dust collector 7 from the qualified product discharge port 31 for dust removal and collection. The collected material is sequentially transported to the qualified material collection point through the third chute 8, the fourth chute 9 and the product elevator 12. The unqualified powder enters the second chute 6 from the unqualified product discharge port 32, is ironed by the iron removal device 51, and enters the mill 2 for grinding again. After the ground powder enters the first chute 5 again through the mill tail elevator 11, it enters the powder selector 3 for powder selection. The qualified powder is collected, and the unqualified powder is returned to the mill 2 for grinding. The grinding and powder selection are repeated in sequence, and the powder is fully dry ground to improve the utilization rate of the powder. During this period, two iron removals are set to improve the grinding efficiency and ensure product quality.

[0048] In the second state, the material is first de-ironed by the de-ironing device 51 on the first chute 5 from the mill tail elevator 11, and then enters the powder selector 3 to screen out qualified powder, which is discharged and collected through the qualified product discharge port 31. The unqualified powder enters the second chute 6 from the unqualified product discharge port 32, is de-ironed by the de-ironing device 51, and enters the mill 2 for grinding again. The ground powder enters the first chute 5 from the mill tail elevator 11 and is de-ironed, and then enters the powder selector 3 for powder selection. The grinding and powder selection are repeated in sequence, and can be selected according to the material conditions, which is beneficial to reducing the power consumption of the mill 2, and then to improving the grinding efficiency and saving energy.

[0049] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. An ultrafine grinding system, characterized in that: It comprises a batching warehouse (1), a grinding mill (2) and a powder classifier (3), wherein the powder classifier (3) is provided with a qualified product discharge port (31) and a unqualified product discharge port (32); The discharge port of the batching warehouse (1) is connected to the feed port of the grinding mill (2) and the feed port of the powder selector (3) through pipelines respectively; The discharge port of the mill (2) is connected to the feed port of the powder selector (3) through a pipeline, and the unqualified product discharge port (32) of the powder selector (3) is connected to the feed port of the mill (2) through a pipeline.

2. The ultrafine grinding system according to claim 1, characterized in that: It also includes a mill tail dust collector (4), which is respectively connected to one end of the discharge port of the mill (2) and the feed port of the powder selector (3).

3. The ultrafine grinding system according to claim 2, characterized in that: It also comprises a first chute (5) and a second chute (6), wherein one end of the first chute (5) is connected to the discharge ports of the mill (2) and the mill tail dust collector (4) respectively through a pipeline, and the other end is connected to the feed port of the powder selector (3) through a pipeline, and both ends of the second chute (6) are connected to the unqualified product discharge port (32) of the powder selector (3) and the feed port of the mill (2) respectively through pipelines; The first chute (5) and the second chute (6) are both provided with an iron removal device (51) for removing iron from the material transmitted through the chute.

4. The ultrafine grinding system according to claim 1, characterized in that: It also comprises a powder selection dust collector (7), wherein the powder selection dust collector (7) is connected to the qualified product discharge port (31) of the powder selection machine (3) through a pipeline.

5. The ultrafine grinding system according to claim 4, characterized in that: The invention also comprises a third chute (8), a fourth chute (9) and a fourth chute dust collector (10); the qualified materials after dust removal by the powder selection dust collector (7) are transported to the fourth chute (9) via the third chute (8); the fourth chute (9) transports the qualified materials to a qualified material collection point; the fourth chute dust collector (10) is arranged at one end of the fourth chute (9) away from the third chute (8).

6. The ultrafine grinding system according to claim 5, characterized in that: The powder selection dust collector (7) is provided with a powder selection dust removal fan (71) and a powder selection dust removal tower (72); the air inlet of the powder selection dust removal fan (71) is connected to the powder selection dust collector (7) through a pipeline, and the air outlet is connected to the powder selection dust removal tower (72) and the feed inlet of the powder selection machine (3) through pipelines.

7. The ultrafine grinding system according to claim 3, characterized in that: It also comprises a mill tail elevator (11), the feed port of the mill tail elevator (11) being connected to the discharge ports of the mill (2) and the mill tail dust collector (4) respectively through pipelines, and the discharge port of the mill tail elevator (11) being connected to the first chute (5) through a pipeline.

8. The ultrafine grinding system according to claim 3, characterized in that: The mill tail dust collector (4) is provided with a mill tail dust removal fan (41) and a mill tail dust removal tower (42); the air inlet of the mill tail dust removal fan (41) is connected to the mill tail dust collector (4) through a pipeline, and the air outlet is connected to the mill tail dust removal tower (42) through a pipeline.

9. The ultrafine grinding system according to claim 5, characterized in that: It also comprises a product elevator (12), the feed port of which is connected to the fourth chute (9) and is used to transport the qualified materials output through the fourth chute (9) to a qualified material collection point.

10. The ultrafine grinding system according to claim 1, characterized in that: The batching warehouse (1) is provided with a batching warehouse dust collector (13).

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