Air drawing device of damp mill

Abstract

The utility model relates to a damp mill air pulling device which comprises a damp mill cylinder, the damp mill cylinder is installed on one side of a damp mill bearing seat, a steam pulling cover is fixed to the outer side wall of the damp mill cylinder, the outlet end of the steam pulling cover penetrates through a plant wall, a plurality of airflow distribution plates are evenly installed on the side wall of the steam pulling cover, and a pipeline funnel is fixedly installed on the bottom face of the steam pulling cover. And the bottom end of the pipeline funnel is connected with a chute. A flap valve is installed on the side wall of the pipeline funnel. An observation hole is formed in the side wall of the steam extraction cover. And the outlet end of the steam extraction cover is connected with a steam extraction fan pipeline outside the plant. An operation platform is installed at the end opening of the chute, and one side of the operation platform is fixedly installed on the inner side wall of the workshop wall. A discharging belt is arranged below the chute and installed on a discharging belt roller. And the damp mill cylinder is mounted on the surface of the bearing seat foundation platform. The steam pulling cover has the advantages of being convenient to operate, low in machining and manufacturing cost, convenient to clean accumulated dust in the steam pulling cover, reliable in installation and capable of prolonging the service life of the damp mill.

Description

Technical Field

[0001] The utility model relates to the technical field of iron ore grinding equipment, in particular to an air extraction device for a grinding machine. Background Art

[0002] The wet grinding mill is mainly used for wet grinding of iron ore. It is an important equipment in the pelletizing process of the steel industry. It processes fine materials with a moisture content of 8-13%, fully mixes and refines the materials, increases the surface area of ​​the material particles, effectively reduces the amount of bentonite added, shortens the production process of pellets, increases the strength of green balls, improves the quality of pellets and metal recovery rate, reduces equipment energy consumption, and improves working conditions and environmental conditions.

[0003] In the prior art, the steam extraction hood at the discharge end of the mill is installed at a relatively high position, and is located in the upper middle part of the plant as a whole. A steam extraction fan is installed outside the plant to extract the water vapor inside the mill. Because the top steam extraction pipeline is arranged horizontally, production operators are required to regularly clean the dust accumulated in the pipeline; if it is not cleaned in time, the pipeline will be blocked, and the water vapor inside the barrel of the mill will not be extracted by the steam extraction fan in time. The water content of the iron ore concentrate in the mill will increase, which will gradually block the discharge port of the mill, and the mill will have production accidents such as "belly swelling", which will have an impact on production. Because the top steam extraction pipeline is located at a relatively high position, 7 meters above the ground, and only simple operation platforms are designed on both sides of the pipeline, there is a high safety risk when cleaning personnel perform cleaning work in this area; the dust accumulated on the iron ore concentrate is all concentrated inside the pipeline, and the load-bearing of the pipeline is mainly supported by the steam extraction hood. The load-bearing load of the steam extraction hood far exceeds the design load, posing a safety hazard. Utility Model Content

[0004] The utility model aims to provide a grinding machine with reasonable structural design, convenient operation, low processing and manufacturing cost, convenient cleaning of dust accumulation in the steam extraction hood, saving time and labor, reliable installation, and extending the service life of the grinding machine.

[0005] The utility model discloses an air extraction device for a lubricating mill, comprising a lubricating mill cylinder body, which is installed on one side of a bearing seat of the lubricating mill, a steam extraction hood is fixed to the outer wall of the lubricating mill cylinder body, an outlet end of the steam extraction hood penetrates the wall of a factory building, a plurality of air flow distribution plates are evenly installed on the side wall of the steam extraction hood, a pipeline funnel is fixedly installed on the bottom surface of the steam extraction hood, and a chute is connected to the bottom end of the pipeline funnel.

[0006] A plurality of air flow distribution plates are evenly installed on the side walls of the steam extraction hood, which are located at the outlet end of the steam extraction hood and can be used to block the dust accumulation in the water vapor and prevent the dust accumulation from entering the steam extraction fan pipe outside the factory building through the outlet end of the steam extraction hood in large quantities, thereby causing the blockage of the steam extraction fan outside the factory building. At the same time, the pipe on the top of the original discharge port steam extraction hood is removed, and the tops of the two branch pipes connected to the main pipe on the top of the steam extraction hood are blocked. On the one hand, the weight of the steam extraction hood is reduced, and on the other hand, a large amount of dust accumulated in the steam extraction hood can enter the chute through the pipe funnel and then be discharged outside the steam extraction hood, which can effectively reduce the large amount of dust accumulated in the steam extraction hood, facilitate cleaning, reduce labor intensity, reduce the weight of the steam extraction hood, eliminate the safety hazards caused by excessive load, ensure the personal safety of operators, and ensure the safety of the operating environment.

[0007] A flap valve is installed on the side wall of the pipeline funnel.

[0008] The flap valve is set. When the accumulated dust in the steam extraction hood enters the pipeline funnel, the flap valve can be opened to allow the accumulated dust to enter the chute, which is convenient for discharging the accumulated dust.

[0009] The side wall of the steam extraction hood is provided with an observation hole.

[0010] The observation hole is set to regularly clean the dust stuck on the upper part of the steam distribution plate, which is convenient for operators to observe and clean regularly.

[0011] The outlet end of the steam extraction hood is connected to the steam extraction fan pipeline outside the factory building.

[0012] The steam extraction fan duct installed outside the plant building can collect part of the accumulated dust in the steam extraction hood, further clean the accumulated dust in the steam extraction hood, reduce the weight of the steam extraction hood, and ensure the safe operation of the whole machine; at the same time, the water vapor in the steam extraction hood can be extracted.

[0013] An operating platform is installed at the chute port, and one side of the operating platform is fixedly installed on the inner wall of the factory building.

[0014] The function of the operating platform is to operate the flap valve to discharge the iron ore concentrate dust in the pipeline funnel to the upper part of the discharge belt.

[0015] A discharging belt is arranged below the chute, and the discharging belt is installed on a discharging belt roller.

[0016] A discharging belt is arranged under the chute to transport the accumulated dust entering the chute, thus saving manpower for operation and making the dust cleaning operation more convenient.

[0017] The barrel of the dampening mill is installed on the surface of the bearing seat base platform.

[0018] A bearing seat platform staircase is fixedly installed on one side of the bearing seat base platform.

[0019] The bearing seat platform stairs are set up to facilitate operators to regularly observe the grinding mill barrel and eliminate faults.

[0020] Beneficial effects of the utility model:

[0021] 1) Multiple air flow distribution plates are evenly installed on the side wall of the steam extraction hood, which are located at the outlet end of the steam extraction hood and can be used to block the dust accumulation in the water vapor, preventing the dust accumulation from entering the steam extraction fan pipe outside the plant through the outlet end of the steam extraction hood, causing the blockage of the steam extraction fan outside the plant; at the same time, the pipe on the top of the original discharge port steam extraction hood is removed, and the tops of the two branch pipes connected to the main pipe on the top of the steam extraction hood are blocked. On the one hand, the weight of the steam extraction hood is reduced, and on the other hand, a large amount of dust accumulated in the steam extraction hood can enter the chute through the pipe funnel and then be discharged out of the steam extraction hood, which can effectively reduce the accumulation of a large amount of dust in the steam extraction hood, facilitate cleaning, reduce labor intensity, reduce the weight of the steam extraction hood, eliminate the safety hazards caused by excessive load, ensure the personal safety of operators, and ensure the safety of the operating environment.

[0022] 2) The flap valve is set. When the ash accumulated in the steam extraction hood enters the pipeline funnel, the flap valve can be opened to allow the ash to enter the chute, making it easier to discharge the ash.

[0023] 3) The observation hole is set up to regularly clean the dust stuck on the upper part of the steam distribution plate, which is convenient for operators to observe and clean regularly.

[0024] 4) The steam extraction fan duct installed outside the plant building can collect some of the accumulated dust in the steam extraction hood, and can further clean the accumulated dust in the steam extraction hood, reduce the weight of the steam extraction hood, and ensure the safe operation of the whole machine.

[0025] 5) The device has a reasonable structural design. By improving the structure of the steam extraction hood, the ash in the water vapor can fall into the pipe funnel under the ash blocking plate. Regularly opening the flap valve in the pipe funnel can unload all the accumulated ash to the surface of the grinding and discharging belt, making it convenient to clean the accumulated ash, reducing the labor intensity of the operators and effectively solving the safety risks of operators cleaning the accumulated ash. It has been put into use with good results and is worthy of promotion and application on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model.

[0027] In the figure: grinding mill barrel 1, grinding mill bearing seat 2, steam extraction hood 3, air flow distribution plate 4, observation hole 5, pipeline funnel 6, flap valve 7, chute 8, factory building external steam extraction fan pipeline 9, discharge belt 10, operating platform 11, discharge belt roller 12, bearing seat platform stairs 13, bearing seat foundation platform 14, factory building wall 15. DETAILED DESCRIPTION

[0028] Example 1.

[0029] The utility model will be further described below in conjunction with the accompanying drawings.

[0030] The utility model comprises a grinding machine barrel 1, a grinding machine bearing seat 2, a steam extraction hood 3, an air flow distribution plate 4, an observation hole 5, a pipeline funnel 6, a flap valve 7, a chute 8, a steam extraction fan pipeline 9 outside a factory building, an operating platform 11, a bearing seat base platform 14, and a factory building wall 15. The specific structure comprises a grinding machine barrel 1, the grinding machine barrel 1 is installed on one side of the grinding machine bearing seat 2, the outer side wall of the grinding machine barrel 1 is fixed with a steam extraction hood 3, the outlet end of the steam extraction hood 3 passes through the factory building wall 15, a plurality of air flow distribution plates 4 are evenly installed on the side wall of the steam extraction hood 3, a pipeline funnel 6 is fixedly installed on the bottom surface of the steam extraction hood 3, and the bottom end of the pipeline funnel 6 is connected with a chute 8.

[0031] A flap valve 7 is installed on the side wall of the pipeline funnel 6.

[0032] The side wall of the steam extraction hood 3 is provided with an observation hole 5.

[0033] The outlet end of the steam extraction hood 3 is connected to the steam extraction fan pipeline 9 outside the factory building.

[0034] An operating platform 11 is installed at the port of the chute 8 , and one side of the operating platform 11 is fixedly installed on the inner wall of the factory wall 15 .

[0035] The grinding machine barrel 1 is installed on the surface of the bearing seat base platform 14.

[0036] The air flow distribution plate 4 is a vertical plate body, the number is six, and the spacing between each air flow distribution plate 4 is 200mm; the specification of the observation hole 5 is: 600×800 mm; the specification of the chute 8 is: 500mm×600mm; the volume of the pipeline funnel 6 is: 0.84m 3 .

[0037] Usage: install the barrel 1 of the wet mill on the surface of the bearing seat base platform 14, and then pass the outlet end of the steam extraction hood 3 through the factory wall 15, and connect it to the steam extraction fan pipeline 9 outside the factory. After starting the motor, the barrel 1 of the wet mill can be operated to wet grind the iron ore. The water vapor in the steam extraction hood 3 can be recovered by the steam extraction fan. After a long period of operation, the iron ore concentrate in the steam extraction hood 3 accumulates dust. When the amount of iron ore concentrate dust increases, the flap valve 7 can be opened to allow the dust to enter the pipeline funnel 6, and then flow out through the chute 8 for recovery; the dust stuck on the upper part of the steam flow distribution plate can be cleaned regularly through the observation hole 5, which is convenient for the operator to observe and clean regularly.

[0038] Example 2.

[0039] The utility model comprises a grinding machine barrel 1, a grinding machine bearing seat 2, a steam extraction hood 3, an air flow distribution plate 4, an observation hole 5, a pipeline funnel 6, a flap valve 7, a chute 8, a steam extraction fan pipeline 9 outside a factory building, a discharging belt 10, an operating platform 11, a discharging belt roller 12, a bearing seat platform staircase 13, a bearing seat base platform 14, and a factory building wall 15. The specific structure comprises a grinding machine barrel 1, the grinding machine barrel 1 is installed on one side of the grinding machine bearing seat 2, the outer side wall of the grinding machine barrel 1 is fixed with a steam extraction hood 3, the outlet end of the steam extraction hood 3 passes through the factory building wall 15, a plurality of air flow distribution plates 4 are evenly installed on the side wall of the steam extraction hood 3, a pipeline funnel 6 is fixedly installed on the bottom surface of the steam extraction hood 3, and the bottom end of the pipeline funnel 6 is connected with a chute 8.

[0040] A flap valve 7 is installed on the side wall of the pipeline funnel 6.

[0041] The side wall of the steam extraction hood 3 is provided with an observation hole 5.

[0042] The outlet end of the steam extraction hood 3 is connected to the steam extraction fan pipeline 9 outside the factory building.

[0043] An operating platform 11 is installed at the port of the chute 8 , and one side of the operating platform 11 is fixedly installed on the inner wall of the factory wall 15 .

[0044] The grinding machine barrel 1 is installed on the surface of the bearing seat base platform 14.

[0045] A discharging belt 10 is provided below the chute 8 , and the discharging belt 10 is installed on a discharging belt roller 12 .

[0046] A bearing seat platform staircase 13 is fixedly installed on one side of the bearing seat base platform 14 .

[0047] The air flow distribution plate 4 is a vertical plate body, the number is six, and the spacing between each air flow distribution plate 4 is 200mm; the specification of the observation hole 5 is: 600×800 mm; the specification of the chute 8 is: 500mm×600mm; the volume of the pipeline funnel 6 is: 0.84m 3 , the width of the discharging belt 10 is 260 mm.

[0048] Usage: install the barrel 1 of the moistening mill on the surface of the bearing seat base platform 14, and then pass the outlet end of the steam extraction hood 3 through the factory wall 15, and connect it to the steam extraction fan pipeline 9 outside the factory. After starting the motor, the barrel 1 of the moistening mill can be operated to perform moist grinding on the iron ore. The water vapor in the steam extraction hood 3 can be recovered by the steam extraction fan. After a long period of operation, the iron ore concentrate in the steam extraction hood 3 accumulates dust. When the amount of iron ore concentrate dust increases, the flap valve 7 can be opened to allow the dust to enter the pipeline funnel 6, and then flow out through the chute 8 to the surface of the discharge belt 10, and be transported by the discharge belt 10, saving manpower and time; the dust stuck on the upper part of the steam flow distribution plate can be cleaned regularly through the observation hole 5, which is convenient for the operator to observe and clean regularly; the bearing seat platform stairs 13 are provided to facilitate the operator to observe the barrel 1 of the moistening mill regularly and eliminate faults.

Claims

1. A mill degassing device, comprising a mill barrel (1), the mill barrel (1) being mounted on one side of a mill bearing seat (2), a degassing hood (3) being fixed to the outer wall of the mill barrel (1), the outlet end of the degassing hood (3) penetrating a factory wall (15), characterized in that: A plurality of airflow distribution plates (4) are evenly mounted on the side wall of the steam extraction hood (3), a pipeline funnel (6) is fixedly mounted on the bottom surface of the steam extraction hood (3), and a chute (8) is connected to the bottom end of the pipeline funnel (6).

2. The air extraction device for a dampening mill according to claim 1, characterized in that: A flap valve (7) is installed on the side wall of the pipeline funnel (6).

3. The air extraction device for a dampening mill as claimed in claim 2, characterized in that: The side wall of the steam extraction hood (3) is provided with an observation hole (5).

4. The air extraction device for a dampening mill as claimed in claim 3, characterized in that: The outlet end of the steam extraction hood (3) is connected to a steam extraction fan pipeline (9) outside the factory building.

5. The air extraction device for a dampening mill as claimed in claim 4, characterized in that: An operating platform (11) is installed at the port of the chute (8), and one side of the operating platform (11) is fixedly installed on the inner wall of the factory building wall (15).

6. The air extraction device for a dampening mill as claimed in claim 5, characterized in that: A discharge belt (10) is provided below the chute (8), and the discharge belt (10) is mounted on a discharge belt roller (12).

7. The air extraction device for a dampening mill as claimed in claim 6, characterized in that: The grinding machine barrel (1) is mounted on the surface of the bearing seat base platform (14).

8. The air extraction device for a dampening mill as claimed in claim 7, characterized in that: A bearing seat platform staircase (13) is fixedly mounted on one side of the bearing seat base platform (14).

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