Glass fiber pulverizing system
By optimizing the glass fiber powder making system and adopting a combination of material bed crushing extrusion and iron remover, the problems of high cost and high energy consumption in vertical mill production were solved, and more efficient and lower-cost glass fiber powder production was achieved.
Patent Information
- Application Number
- CN202422704679.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-06
AI Technical Summary
When using vertical mills for large-scale production in existing glass fiber powder making technology, the investment and maintenance costs are high, and the energy consumption is also high.
A glass fiber powder making system including a transmission device, a roller grinding device, a lifting device, a powder selection device and a dust collection device is used. The finished glass fiber powder with the required fineness is produced through crushing and extrusion of the material bed. The iron remover and fan system are optimized to reduce the fan load and equipment wear.
It reduces system investment and maintenance costs, reduces energy consumption, improves equipment operating rate and finished powder quality, and simplifies operating procedures.
Smart Images
Figure CN223417328U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glass fiber powder making, in particular to a glass fiber powder making system. Background Art
[0002] In the early days of the fiberglass industry, raw material grinding primarily involved ball milling or Raymond milling. To control metal content (steel consumption was incorporated into the finished powder), ball mills often used grinding media such as ceramic and aluminum alloy balls. However, ball milling was inefficient, while Raymond mills had low output (typically around 2-3 tph). This led to a gradual shift to vertical mills for raw material grinding, typically using the HRM22.2 model. Output ranged from 5.5 to 10 tph, depending on the ore. The industry boasts approximately 100 of these mills. The relationship between the number of vertical mills and system output was addressed by increasing the number of mill lines. For example, if a single vertical mill line had an output of 6.5 tph, achieving 65 tph would require the use of 10 lines, resulting in high investment and maintenance costs. Furthermore, the system fan pressure used in vertical milling processes typically reached 9,000 to 10,000 Pa, leading to high energy consumption. Utility Model Content
[0003] The purpose of the utility model is to provide a glass fiber powder making system to solve the technical problems of high investment and maintenance costs and high energy consumption in the prior art when using vertical mills for large-scale production.
[0004] The utility model discloses a glass fiber powder making system, comprising a transmission device, wherein the transmission device is connected to a roller grinding device, the roller grinding device is connected to a lifting device, the lifting device is connected to a powder selection device, the fine-grained material outlet of the powder selection device is connected to a dust collecting device, and the coarse particle outlet of the powder selection device is connected to the transmission device.
[0005] Working principle: During use, the glass fiber raw materials are metered and then sent to the roller mill through the transmission device for bed crushing extrusion. After extrusion, the material becomes a cake, which is lifted by the lifting device to the powder selection device. The fine-grained material selected by the powder selection device is the finished glass fiber powder. The qualified finished product is carried into the dust collection device by the airflow. After the material and air are separated, the finished glass fiber powder is discharged from the discharge port of the dust collection device. By using the roller mill device, the raw materials required for powder production are subjected to bed crushing extrusion. The raw materials are compressed under high pressure, resulting in cracks and micro-fractures. When the extruded material leaves the high-pressure area, the material is broken into smaller particles because its own cohesive force is not enough to resist these cracks, thereby producing a certain amount of finished products that meet the fineness requirements.
[0006] Furthermore, a first iron remover is provided on the transmission device.
[0007] By providing the first iron remover, magnetic metals of a certain size can be removed from the glass fiber raw material before the glass fiber raw material is processed.
[0008] Further, the transmission device is also provided with a metal detector and a pneumatic three-way valve.
[0009] By setting the metal detector, the non-magnetic metal in the material is detected. Once the material contains metal of a certain size, it is discharged through the subsequent pneumatic three-way valve to protect the roller surface of the roller mill device.
[0010] Further, the transmission device and the roller mill device are provided with a steady flow constant weight bin.
[0011] By setting the steady flow constant weight bin, the material forms a certain material pressure in the steady flow constant weight bin and then over-saturates the roller mill device.
[0012] Further, the second iron remover is arranged on the discharge chute of the lifting device.
[0013] Further, the selected powder device discharges the selected coarse particles and fine particles.
[0014] The material and gas mixture in the entire powder selection process is horizontal or downward, which greatly reduces the load of the system fan, and the fan pressure is reduced by about 4500-5500 Pa compared with the vertical mill process. The phenomenon of high-speed air conveying of medium and fine materials is avoided, thereby reducing the system wear.
[0015] Further, the selected powder device discharges the selected coarse particles and fine particles.
[0016] Further, the third iron remover is arranged on the material outlet of the selected powder device.
[0017] Further, the dust collection device is connected with an air conveying chute.
[0018] Further, the fourth iron removing device is arranged on the air conveying chute.
[0019] Further, the selected powder device and the dust collection device are connected with a system fan.
[0020] By setting the system fan, the selected powder device and the dust collection device provide power support for powder selection, and then the gas is discharged into the atmosphere after purification by the dust collection device.
[0021] Further, the dust collection device is a bag-type dust collector.
[0022] By setting the bag type dust collector, based on the filtering effect, when the dust-containing gas passes through the filter bag, the dust particles are intercepted on the surface of the filter bag to form a dust layer, and the clean air is discharged through the filter bag, and the dust attached to the filter bag is removed periodically by the dust removal system to maintain good filtering effect. High dust collection efficiency, good trapping capacity for fine dust, simple process flow, easy to operate. However, the occupied area is large, the equipment and civil investment is high; the collected dust is needle-shaped and flaky material produced by high-pressure roller mill extrusion, which has great influence on the service life of the filter bag and high maintenance cost; compressed air needs to be introduced for work, and regular noise pollution will be generated during equipment operation.
[0023] Further, the dust collecting device is a cyclone separator.
[0024] By setting the cyclone separator, using the principle of centrifugal separation, when the dust-containing gas enters the separator, the dust particles move downward along the wall spiral due to the action of internal vortex, and the purified gas is discharged upward from the center. The device structure is compact, the occupied area is small; the device has no moving parts, the running noise is low, and the maintenance cost is low; for the dust with large particle size, the purification effect is good. However, the dust collection efficiency is low, and the trapping capacity for fine dust is poor. In order to achieve ultra-low emission standard, small bag type dust collector and fan are added in the subsequent process to treat and discharge the dust-containing gas, and the process flow is complex
[0025] Further, the cyclone separator is further connected with a filter and a blow-off fan.
[0026] The exhaust of the system fan is divided into two paths, one path returns to the air inlet of the powder selecting device, and the other path is purified by the filter, and the gas is discharged into the atmosphere by the blow-off fan.
[0027] Further, the roller mill device is a high-pressure roller mill.
[0028] Compared with the prior art, the utility model has the beneficial effects that:
[0029] 1. The high-pressure roller mill final grinding system has a higher upper limit of production capacity, and the equipment specification can be selected according to production needs, so that multiple systems are not needed to meet production needs, different types of materials can meet the production capacity demand with only one set, the system units are reduced, and the occupied area and equipment maintenance are reduced.
[0030] 2. Since the high-pressure roller mill final grinding single system has large production capacity, civil investment is saved, so the system investment cost is lower than that of the traditional vertical mill final grinding system;
[0031] 3. The total installed capacity of the high-pressure roller mill final grinding system is low, and the unit power consumption is also lower than that of the vertical mill system, so the power saving effect is obvious.
[0032] 4. The maintenance workload and cost of the high-pressure roller mill are less, more convenient and more economical than the vertical mill system; glass fiber is a super-abrasive material, and the base surface has a high wear resistance requirement. The high-pressure roller mill adopts a high-wear roller surface technology and a low-speed working mode, which not only improves the operation rate and saves the maintenance cost, but also reduces the metal wear and improves the quality of the finished powder;
[0033] 5. The high-pressure roller mill system adopts a high-pressure, low-speed and frequency-adjusting working mode, is stable in operation and easy to operate, while the vertical mill system has a high requirement for the stability of the material layer and is prone to vibration in production, and is not easy to realize stable operation. BRIEF DESCRIPTION OF DRAWINGS
[0034] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only represent some embodiments of the present application, and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0035] Figure 1 The figure is a structure schematic diagram of the glass fiber powder production system of the present application.
[0036] Figure 2 The figure is a structure schematic diagram of the glass fiber powder production system of the embodiment 5 of the present application.
[0037] Figure 3 The figure is a structure schematic diagram of the glass fiber powder production system of the embodiment 4 of the present application.
[0038] Figure 4 The figure is another structure schematic diagram of the glass fiber powder production system of the embodiment 5 of the present application.
[0039] In the above drawings, the meanings of various marks are as follows: 1-transmission device, 2-roller mill device, 3-elevator device, 4-powder selection device, 5-dust collection device, 6-first iron remover, 7-metal detector, 8-pneumatic three-way valve, 9-steady flow constant weight bin, 10-second iron remover, 11-third iron remover, 12-air conveying chute, 13-fourth iron removal device, 14-system fan, 15-filter, 16-air release fan. DETAILED DESCRIPTION
[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments.
[0041] Embodiment 1
[0042] The technical solutions adopted in this embodiment are as follows:
[0043] like Figures 1-4 As shown, a glass fiber powder making system includes a transmission device 1, the transmission device 1 is connected to a roller grinding device 2, the roller grinding device 2 is connected to a lifting device 3, the lifting device 3 is connected to a powder selection device 4, the fine-grained material outlet of the powder selection device 4 is connected to a dust collecting device 5, and the coarse particle outlet of the powder selection device 4 is connected to the transmission device 1.
[0044] Working Principle: After metering, the fiberglass raw materials are fed through a conveyor device 1 into a roller mill 2 for bed-crushing extrusion. After extrusion, the material becomes a cake, which is then lifted by an elevator to a powder selection device 4. The fine-grained material selected by the powder selection device 4 is the finished fiberglass powder. Qualified finished products are carried by the airflow into a dust collector 5. After the material and air are separated, the finished fiberglass powder is discharged from the outlet of the dust collector 5. The roller mill 2 applies bed-crushing extrusion to the raw materials required for powder production. The raw materials are compressed under high pressure, causing cracks and micro-fractures. When the extruded material leaves the high-pressure zone, its internal cohesion is insufficient to resist these cracks, causing it to break into smaller particles, resulting in a certain amount of finished product that meets the required fineness.
[0045] Example 2
[0046] In this embodiment as a preferred embodiment of the present invention, the specific structure is as follows Figures 1-4 As shown, the following improvements are disclosed based on the embodiment 1: the transmission device 1 is provided with a first iron remover 6 , and the transmission device 1 is also provided with a metal detector 7 and a pneumatic three-way valve 8 .
[0047] By providing the first iron remover 6 , magnetic metals of a certain size can be removed from the glass fiber raw material before the glass fiber raw material is processed.
[0048] A metal detector 7 is provided to detect non-magnetic metals in the material. Once the material is found to contain metals of a certain size, the metals are discharged through a subsequent pneumatic three-way valve 8 to protect the roller surface of the roller grinding device 2.
[0049] Example 3
[0050] In this embodiment as a preferred embodiment of the present invention, the specific structure is as follows Figures 1-4 As shown, it discloses the following improvements based on the embodiment 2: a flow-stabilizing constant weight bin 9 is provided between the transmission device 1 and the roller grinding device 2, and a second iron remover 10 is provided on the discharge chute of the lifting device 3.
[0051] By providing the steady flow constant weight bin 9 , the material is fed into the roller mill device 2 after being supersaturated after forming a certain material pressure in the steady flow constant weight bin 9 .
[0052] Example 4
[0053] In this embodiment as a preferred embodiment of the present invention, the specific structure is as follows Figure 1 and Figure 3 As shown, it discloses the following improvement based on the embodiment 1, the lower part of the powder selection device 4 discharges the coarse particles and fine particles after sorting.
[0054] During the entire powder selection process, the material-air mixture is transported horizontally or downward, which greatly reduces the load of the system fan 14. The fan pressure is about 4500~5500 Pa lower than that of the vertical mill process; and avoids the need for high wind speed to transport medium and fine materials by wind, thereby reducing system wear.
[0055] Example 5
[0056] In this embodiment as a preferred embodiment of the present invention, the specific structure is as follows Figure 2 and Figure 4 As shown, the following improvement is disclosed based on the third embodiment: the powder selection device 4 discharges the fine-grained materials after sorting at the upper part, and discharges the coarse particles after sorting at the lower part.
[0057] Example 6
[0058] In this embodiment as a preferred embodiment of the present invention, the specific structure is as follows Figures 1-4 As shown, it discloses the following improvements based on implementation mode 1: the material outlet of the powder selection device 4 is provided with a third iron remover 11, the dust collecting device 5 is connected to an air conveying chute 12, and the air conveying chute 12 is provided with a fourth iron removal device 13.
[0059] Example 7
[0060] In this embodiment as a preferred embodiment of the present invention, the specific structure is as follows Figures 1-4 As shown, it discloses the following improvement based on Implementation 4 or Implementation 5, that is, the powder selection device 4 and the dust collection device 5 are connected to a system fan 14.
[0061] The system fan 14 is provided to provide power support for powder selection for the powder selection device 4 and the dust collecting device 5, and then the gas is discharged into the atmosphere after being purified by the dust collecting device 5.
[0062] Example 8
[0063] In this embodiment as a preferred embodiment of the present invention, the specific structure is as follows Figure 1-Figure 2As shown, it discloses the following improvements on the basis of embodiment 7, the dust collecting device 5 is a bag filter.
[0064] By setting the bag filter, based on the filtering effect, when the dust-containing gas passes through the filter bag, the dust particles are trapped on the surface of the filter bag to form a dust layer, and the clean air passes through the filter bag and is discharged. The dust attached to the filter bag is removed regularly by the dust removal system to maintain good filtering effect. The dust collection efficiency is high, and the fine dust has good trapping capacity. The process flow is simple and easy to operate. However, the land occupation is large, the equipment and civil engineering investment is high; the collected dust is needle-shaped and flaky material produced by high-pressure roller mill, which has great influence on the service life of the filter bag and high maintenance cost; compressed air needs to be introduced for work, and the equipment will produce regular noise pollution during operation.
[0065] Embodiment 9
[0066] In this embodiment as a preferred embodiment of the utility model, the specific structure is as shown in Figure 3 and Figure 4 As shown, it discloses the following improvements on the basis of embodiment 8, the dust collecting device 5 is a cyclone separator, the cyclone separator is further connected with a filter 15 and a blow-off fan 16, and the roller mill device 2 is a high-pressure roller mill.
[0067] By setting the cyclone separator, using the principle of centrifugal separation, when the dust-containing gas enters the separator, due to the action of internal vortex, the dust particles move downward along the wall in a spiral manner, and the purified gas is discharged upward from the center. The equipment structure is compact, the land occupation is small; the equipment has no moving parts, the running noise is low, and the maintenance cost is low; for the dust with large particle size, the purification effect is good. However, the dust collection efficiency is low, and the trapping capacity for fine dust is poor. In order to achieve the ultra-low emission standard, the subsequent process will increase a small bag filter and a fan to handle the exhaust dust-containing gas, and the process flow is complex.
[0068] The exhaust air of the system fan 14 is divided into two paths, one path returns to the air inlet of the powder selecting device 4, and the other path passes through the filter 15 to purify the gas, and the purified gas is discharged into the atmosphere by the blow-off fan 16.
[0069] The above is the embodiment of the embodiment, but the embodiment is not limited to the above optional embodiment, and those skilled in the art can obtain other various embodiments by arbitrarily combining the above embodiments. Any person can obtain other various forms of embodiments under the inspiration of the embodiment. The above specific embodiments should not be understood as a limitation on the protection scope of the embodiment, and the protection scope of the embodiment should be defined by the claims, and the specification can be used to explain the claims.
Claims
1. A glass fiber powder making system, characterized by: The invention comprises a transmission device (1), wherein the transmission device (1) is connected to a roller grinding device (2), the roller grinding device (2) is connected to a lifting device (3), the lifting device (3) is connected to a powder selection device (4), the fine-grained material outlet of the powder selection device (4) is connected to a dust collecting device (5), and the coarse-grained material outlet of the powder selection device (4) is connected to the transmission device (1).
2. A glass fiber powder making system according to claim 1, characterized in that: The transmission device (1) is provided with a first iron remover (6).
3. A glass fiber powder making system according to claim 1, characterized in that: The transmission device (1) is also provided with a metal detector (7) and a pneumatic three-way valve (8).
4. A glass fiber powder making system according to claim 1 or 2, characterized in that: A constant flow and constant weight bin (9) is provided between the transmission device (1) and the roller grinding device (2).
5. The glass fiber powder making system according to claim 1, characterized in that: A second iron remover (10) is provided on the discharge chute of the lifting device (3).
6. A glass fiber powder making system according to claim 1, characterized in that: The lower part of the powder selection device (4) discharges the sorted coarse particles and fine particles.
7. The glass fiber powder making system according to claim 1, characterized in that: The powder selection device (4) discharges the fine-grained materials after sorting at the upper part, and discharges the coarse particles after sorting at the lower part.
8. The glass fiber powder making system according to claim 1, characterized in that: The powder selection device (4) and the dust collection device (5) are connected to a system fan (14).
9. A glass fiber powder making system according to claim 8, characterized in that: The dust collecting device (5) is a bag dust collector or a cyclone separator.
10. A glass fiber powder making system according to claim 9, characterized in that: The cyclone separator is also connected to a filter (15) and a vent fan (16).