Anti-falling tuyere ring equipment device in EM type medium-speed ball mill

Abstract

The utility model relates to the technical field of EM type medium-speed ball mills for coal injection and pulverizing of blast furnaces, in particular to an anti-falling tuyere ring equipment device in an EM type medium-speed ball mill, which comprises tuyere ring equipment, a plurality of closed connecting holes are formed in the top of the tuyere ring equipment, and fixing bolts are arranged in the connecting holes; according to the utility model, the tuyere ring equipment is fixed, so that the tuyere ring equipment is prevented from falling off, on one hand, the tuyere ring equipment is prevented from falling off to damage slag scraping equipment and influence on stable wind field and wind speed operation, and the pulverizing efficiency is improved; and on the other hand, the fixing bolts are prevented from falling off, the working intensity of workers is reduced, the risk that the workers maintain the machine is reduced, and the personal safety of the workers is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of EM type medium speed ball mill for blast furnace coal injection pulverizing, in particular to an anti-falling tuyere ring equipment device in an EM type medium speed ball mill. Background Art

[0002] In the coal-injection pulverizing system, the pulverized coal prepared by the EM medium-speed ball mill system is collected into the powder collector by the ascending cyclone wind field formed by the hot air passing through the specific air duct of the nozzle ring equipment. In actual production, due to the large vibration during the overall operation of the EM medium-speed ball mill, the nozzle ring equipment is fixed by bolts. Due to the loosening of the bolts themselves during long-term vibration, the nozzle ring loosens and falls into the air duct. If the fallen nozzle ring equipment is not found in time. First, it will damage the scraping equipment, second, it will affect the stable wind field and wind speed operation, and third, it will affect the normal pulverizing work. In order to avoid similar failures, workers in each team usually enter the mill regularly to tighten the bolts. Since the EM medium-speed mill equipment is large, there is a risk of falling from a high place when entering and exiting. In addition, the equipment is in the gas area, and the risk of carbon monoxide poisoning is relatively high. The unnecessary workload of the team workers is increased, and the life safety of the team workers is also greatly affected.

[0003] Therefore, an anti-falling tuyere ring device for EM type medium-speed ball mill is proposed. Summary of the invention

[0004] The utility model aims to provide an anti-falling tuyere ring device for an EM type medium-speed ball mill.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An anti-falling nozzle ring device for an EM type medium-speed ball mill comprises:

[0007] Nozzle ring equipment;

[0008] The top of the nozzle ring device is provided with a plurality of closed connection holes, and each of the plurality of connection holes is provided with a fixing bolt;

[0009] The fixing bolt is composed of a screw rod and a nut, wherein a limiting hole is provided on the outer wall of the nut;

[0010] A connecting strip is fixed on the top of the nozzle ring device, a slide groove is provided on the top of the connecting strip, a slider is installed in the slide groove, a connecting plate is fixed on the top of the slider, and a limiting rod is fixed at one end of the connecting plate;

[0011] One end of the limiting rod is clamped inside the limiting hole.

[0012] Preferably, a telescopic rod is fixed to the inner wall of one side of the slide groove, and one end of the telescopic rod away from the inner wall of one side of the slide groove is fixed to the sliding block.

[0013] Preferably, a compression spring is provided on the outside of the telescopic rod, one end of the compression spring is fixed to the sliding block, and the other end of the compression spring is fixed to the inner wall of one side of the sliding groove.

[0014] Preferably, a sealing plate is connected to the top of the connecting strip.

[0015] Preferably, a limiting plate is fixed on the outer wall of the sealing plate, a receiving strip is fixed on the outer wall of the connecting strip, a threaded hole is opened on the top of the receiving strip, a threaded rod is threadedly connected to the threaded hole, a rotating strip is fixed on the top of the threaded rod, and a limiting ring abutting against the limiting plate is fixed on the outer wall of the threaded rod.

[0016] Preferably, a sealing gasket is installed at the bottom of the sealing plate.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] Firstly, since the connection hole is closed, the fixing bolt is not easy to fall off in the connection hole, thereby improving the stability of the nozzle ring equipment;

[0019] Secondly, under the action of the compression spring, the telescopic rod will be driven to stretch, and when the telescopic rod stretches, the slider will be pushed to move in the slide slot. When one end of the limit rod is clamped into the limit hole, the fixing bolt can be fixed to prevent the fixing bolt from loosening or even falling off, thereby further improving the stability of the nozzle ring equipment.

[0020] Compared with the existing ones, the utility model fixes the nozzle ring device to prevent the nozzle ring device from falling off, which can prevent the nozzle ring device from falling off and damaging the scraping device, affecting the stable wind field and wind speed operation, thereby improving the powder making efficiency;

[0021] On the other hand, it also prevents the fixing bolts from falling off, reduces the work intensity of the staff, reduces the risk of the staff maintaining the machine, and ensures the personal safety of the staff.

[0022] The utility model places the sealing plate on the top of the connecting strip and then rotates the turning strip, which drives the threaded rod to move downward in the threaded hole. After the limiting ring on the outer wall of the threaded rod abuts against the limiting plate, the sealing plate can be fixed. By fixing the sealing plate to the top of the connecting strip, the sealing plate can seal the slide groove to prevent powder from entering the slide groove, thereby improving the working efficiency of the compression spring and the telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0025] Figure 3 This is a schematic diagram of the sealing plate structure in the utility model;

[0026] Figure 4 It is a schematic diagram of the fixing bolt structure in the utility model.

[0027] In the figure: 1. Nozzle ring equipment; 2. Connecting hole; 3. Fixing bolt; 4. Screw rod; 5. Nut; 6. Limiting hole; 7. Connecting strip; 8. Slide groove; 9. Slider; 10. Connecting plate; 11. Limiting rod; 12. Telescopic rod; 13. Compression spring; 14. Sealing plate; 15. Sealing pad; 16. Limiting plate; 17. Supporting strip; 18. Threaded hole; 19. Threaded rod; 20. Turning strip; 21. Limiting ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Example

[0030] See also Figure 1 , 2 4. The utility model provides a technical solution: To achieve the above-mentioned purpose, the utility model provides the following technical solution: An anti-falling nozzle ring equipment device in an EM type medium-speed ball mill, comprising: a nozzle ring equipment 1; a plurality of closed connecting holes 2 are provided on the top of the nozzle ring equipment 1, and fixing bolts 3 are provided in the plurality of connecting holes 2; the fixing bolts 3 are composed of a screw rod 4 and a nut 5, wherein a limiting hole 6 is provided on the outer wall of the nut 5; a connecting strip 7 is fixed on the top of the nozzle ring equipment 1, a slide groove 8 is provided on the top of the connecting strip 7, a slider 9 is installed in the slide groove 8, a connecting plate 10 is fixed on the top of the slider 9, and a limiting rod 11 is fixed at one end of the connecting plate 10; one end of the limiting rod 11 is clamped inside the limiting hole 6, a telescopic rod 12 is fixed to the inner wall of one side of the slide groove 8, and one end of the telescopic rod 12 away from the inner wall of one side of the slide groove 8 is fixed to the slider 9, and a compression spring 13 is provided on the outside of the telescopic rod 12, one end of the compression spring 13 is fixed to the slider 9, and the other end of the compression spring 13 is fixed to the inner wall of one side of the slide groove 8.

[0031] Specifically, firstly, since the connecting hole 2 is closed, the fixing bolt 3 is not easy to fall off in the connecting hole 2, thereby improving the stability of the nozzle ring device 1;

[0032] Secondly, under the action of the compression spring 13, the telescopic rod 12 is driven to stretch, and when the telescopic rod 12 stretches, the slider 9 is pushed to move in the slide groove 8. When one end of the limit rod 11 is clamped into the limit hole 6, the fixing bolt 3 can be fixed to prevent the fixing bolt 3 from loosening or even falling off, thereby further improving the stability of the nozzle ring device 1;

[0033] Compared with the existing ones, the utility model fixes the nozzle ring device 1 to prevent the nozzle ring device 1 from falling off, thereby preventing the nozzle ring device 1 from falling off and damaging the scraping device, affecting the stable wind field and wind speed operation, and improving the powder making efficiency;

[0034] On the other hand, it also prevents the fixing bolt 3 from falling off, reduces the work intensity of the staff, reduces the risk of the staff maintaining the machine, and ensures the personal safety of the staff. Example

[0035] See also Figure 1-3 The utility model provides a technical solution: an anti-falling nozzle ring equipment device in an EM type medium-speed ball mill, a sealing plate 14 is connected to the top of the connecting strip 7, a limiting plate 16 is fixed on the outer wall of the sealing plate 14, a receiving strip 17 is fixed on the outer wall of the connecting strip 7, a threaded hole 18 is opened on the top of the receiving strip 17, a threaded rod 19 is connected to the inner thread of the threaded hole 18, a rotating strip 20 is fixed on the top of the threaded rod 19, a limiting ring 21 abutting against the limiting plate 16 is fixed on the outer wall of the threaded rod 19, and a sealing pad 15 is installed at the bottom of the sealing plate 14.

[0036] Specifically, the utility model places the sealing plate 14 on the top of the connecting bar 7, and then rotates the turning bar 20, which drives the threaded rod 19 to descend in the threaded hole 18. After the limiting ring 21 on the outer wall of the threaded rod 19 abuts against the limiting plate 16, the sealing plate 14 can be fixed. By fixing the sealing plate 14 to the top of the connecting bar 7, the sealing plate 14 can seal the slide groove 8 to prevent powder from entering the slide groove 8, thereby improving the working efficiency of the compression spring 13 and the telescopic rod 12.

[0037] Working principle:

[0038] Firstly, since the connecting hole 2 is closed, the fixing bolt 3 is not easy to fall off in the connecting hole 2, thereby improving the stability of the nozzle ring device 1;

[0039] Secondly, under the action of the compression spring 13, the telescopic rod 12 is driven to stretch, and when the telescopic rod 12 stretches, the slider 9 is pushed to move in the slide groove 8. When one end of the limit rod 11 is clamped into the limit hole 6, the fixing bolt 3 can be fixed to prevent the fixing bolt 3 from loosening or even falling off, thereby further improving the stability of the nozzle ring device 1;

[0040] Finally, by placing the sealing plate 14 on the top of the connecting strip 7 and then rotating the turning strip 20, the turning strip 20 will drive the threaded rod 19 to move downward in the threaded hole 18. After the limiting ring 21 on the outer wall of the threaded rod 19 abuts against the limiting plate 16, the sealing plate 14 can be fixed. By fixing the sealing plate 14 to the top of the connecting strip 7, the sealing plate 14 can seal the slide groove 8 to prevent powder from entering the slide groove 8, thereby improving the working efficiency of the compression spring 13 and the telescopic rod 12.

[0041] In the description of the present invention, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0042] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An anti-falling nozzle ring device for an EM medium-speed ball mill, characterized in that: include: Nozzle ring equipment (1); The top of the nozzle ring device (1) is provided with a plurality of closed connection holes (2), and each of the plurality of connection holes (2) is provided with a fixing bolt (3); The fixing bolt (3) is composed of a screw rod (4) and a nut (5), wherein a limiting hole (6) is provided on the outer wall of the nut (5); A connecting strip (7) is fixed on the top of the nozzle ring device (1), a slide groove (8) is provided on the top of the connecting strip (7), a slider (9) is installed in the slide groove (8), a connecting plate (10) is fixed on the top of the slider (9), and a limiting rod (11) is fixed at one end of the connecting plate (10); One end of the limiting rod (11) is clamped inside the limiting hole (6).

2. The device for preventing a tuyere ring from falling off in an EM medium-speed ball mill according to claim 1 is characterized in that: A telescopic rod (12) is fixed to the inner wall of one side of the slide groove (8), and one end of the telescopic rod (12) away from the inner wall of one side of the slide groove (8) is fixed to the sliding block (9).

3. The device for preventing a tuyere ring from falling off in an EM medium-speed ball mill according to claim 2 is characterized in that: A compression spring (13) is provided outside the telescopic rod (12), one end of the compression spring (13) is fixed to the slider (9), and the other end of the compression spring (13) is fixed to the inner wall of one side of the slide groove (8).

4. The device for preventing a tuyere ring from falling off in an EM medium-speed ball mill according to claim 1, characterized in that: The top of the connecting strip (7) is connected with a sealing plate (14).

5. The device for preventing a tuyere ring from falling off in an EM medium-speed ball mill according to claim 4 is characterized in that: A limiting plate (16) is fixed on the outer wall of the sealing plate (14), a receiving strip (17) is fixed on the outer wall of the connecting strip (7), a threaded hole (18) is provided on the top of the receiving strip (17), a threaded rod (19) is connected to the inner thread of the threaded hole (18), a rotating strip (20) is fixed on the top of the threaded rod (19), and a limiting ring (21) abutting against the limiting plate (16) is fixed on the outer wall of the threaded rod (19).

6. The device for preventing a tuyere ring from falling off in an EM type medium-speed ball mill according to claim 5, characterized in that: A sealing gasket (15) is installed at the bottom of the sealing plate (14).

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