Coke preheating device for coke oven waste gas

Abstract

The utility model relates to the technical field of coke oven waste gas, in particular to a coke preheating device for coke oven waste gas, which comprises a coke bin and a gas supply pipeline fixedly mounted at the bottom end of the coke bin, a reciprocating screw rod is fixedly mounted at the top end of an output shaft of a driving motor, and a sliding plate is sleeved on the reciprocating screw rod in a threaded manner; mounting rings are fixedly mounted at the two ends of the sliding plate, a plurality of rack rods are mounted on the mounting rings, a plurality of mounting plates are mounted on the surface of the coke bin, a plurality of rotating rods are mounted on the surfaces of the mounting plates, gears sleeve the rotating rods, a plurality of spring rods are mounted on the surfaces of the rotating rods, and impact balls are fixedly mounted at one ends of the spring rods. The coke in the coke bin does not stand any more but vibrates, so that the coke at the bottom is not compact any more, the coke distance through which the coke oven waste gas can pass is increased, the coke at the upper part can also be in contact with the coke oven waste gas, and the preheating integrity of the coke is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coke oven waste gas, in particular to a coke preheating device for coke oven waste gas. Background Art

[0002] At present, the waste gas after the hot blast furnace combustion is mostly used for preheating coke in China, and coke oven waste gas is rarely used. This is because, firstly, the waste gas from the hot blast furnace has a high temperature and contains less water. Secondly, many manufacturers believe that coke oven waste gas is a product of the combustion of organic matter and contains more water. Not only will it not remove water, it may also cause the water content of the coke to increase. Therefore, domestic steel mills do not use coke oven waste gas.

[0003] A Chinese patent with publication number CN201339013Y discloses a coke preheating device that can utilize coke oven exhaust gas. The device can not only use the coke oven exhaust gas to preheat the coke and improve the thermal energy utilization rate of the coke oven exhaust gas, but also does not cause the moisture content of the coke to increase, thereby effectively reducing the production cost of the enterprise.

[0004] In the above patent document, the coke oven exhaust gas is introduced into the coke bin through an air supply pipe, so as to achieve the effect of preheating the coke in the coke bin. However, since the coke is generally piled up in the coke bin and the multiple cokes at the bottom are relatively compact, the coke area that the coke oven exhaust gas introduced into the coke bin can pass through is limited. The coke located above may not be in contact with the coke oven exhaust gas and thus cannot be preheated. Utility Model Content

[0005] The purpose of the utility model is to solve the following shortcomings in the prior art: since coke is generally piled up in a coke bin, the multiple cokes at the bottom are relatively compact, so that the coke area that the coke oven exhaust gas entering the coke bin can pass through is limited, and the coke located above may not be in contact with the coke oven exhaust gas, and thus cannot be preheated, and a coke preheating device for coke oven exhaust gas is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A coke preheating device for coke oven exhaust gas comprises a coke bin and an air delivery pipe fixedly mounted at the bottom of the coke bin, a driving motor is vertically rotatably mounted in the air delivery pipe through a mounting component, a rotating blade is fixedly sleeved on the output shaft of the driving motor, a reciprocating screw is fixedly mounted on the top of the output shaft of the driving motor, a slide plate is threadedly sleeved on the reciprocating screw, through-holes are symmetrically vertically opened on the surface of the air delivery pipe, two ends of the slide plate pass through two through-holes respectively, and sealing components are provided on the upper and lower surfaces of the slide plate;

[0008] Mounting rings are fixedly installed at both ends of the slide plate, and a plurality of rack rods are fixedly installed on the upper surface of the mounting ring in a circular shape. A plurality of mounting plates are fixedly installed on the surface of the coke bin in a circular shape. A plurality of rotating rods are equidistantly installed on the surface of the mounting plate for horizontal rotation. A gear is fixedly sleeved on the rotating rod, and a plurality of spring rods are fixedly installed on the surface of the rotating rod in a circular shape. An impact ball is fixedly installed on one end of the spring rod away from the rotating rod, and the plurality of rack rods are respectively meshed and connected with a plurality of gears.

[0009] Preferably, the mounting component comprises a fixing ring and two support rods symmetrically fixedly mounted on the outer ring wall of the fixing ring, the fixing ring is fixedly sleeved on the driving motor, and one end of the two support rods is fixedly connected to the inner wall of the air delivery pipe.

[0010] Preferably, a filter is fixedly installed in the air supply pipe, and the filter is used to prevent impurities from entering the coke bin.

[0011] Preferably, a hollow cylinder is vertically rotatably installed at the center of the lower surface of the filter, and a scraper bar that is in sliding contact with the filter is symmetrically fixedly installed on the surface of the hollow cylinder. The inner wall of the hollow cylinder is provided with a thread, and a threaded rod is threadedly installed. The threaded rod is restricted in rotation by a limiting component, and two L-shaped push plates are fixedly installed on the upper surface of the slide plate. The distance between the top ends of the two push plates is greater than the diameter of the reciprocating screw rod and smaller than the diameter of the threaded rod. A telescopic spring is provided in the hollow cylinder, and both ends of the telescopic spring are respectively connected to the filter screen and the threaded rod.

[0012] Preferably, the limiting component includes a limiting groove vertically opened on the inner wall of the air supply pipe and a limiting rod fixedly installed on the surface of the threaded rod, and the limiting rod is slidably arranged in the limiting groove at one end away from the threaded rod.

[0013] Preferably, the sealing component comprises a sealing plate fixedly mounted on the surface of the slide plate, the upper and lower opening walls of the through opening are vertically provided with slots, and a plurality of the sealing plates are respectively slidably and sealingly inserted into the plurality of slots.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] When the driving motor drives the rotating blades to rotate, thereby sucking the coke oven exhaust gas into the air delivery pipe and into the coke bin, multiple rack rods will move back and forth vertically, so that multiple impact balls will intermittently collide with the surface of the coke bin, and the coke in the coke bin will vibrate together due to the vibration force generated by the impact. The coke at the bottom of the coke bin is no longer compacted due to the pressure of the coke above, which increases the coke area that the coke oven exhaust gas can pass through, so that the coke above can also contact the coke oven exhaust gas, thereby improving the integrity of the coke preheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front perspective structural diagram of a coke preheating device for coke oven exhaust gas proposed by the utility model;

[0017] Figure 2 It is a schematic diagram of a partial three-dimensional cross-sectional structure of a filter screen in a coke preheating device for coke oven exhaust gas proposed by the utility model;

[0018] Figure 3 for Figure 1 A magnified view of the structure at center;

[0019] Figure 4 for Figure 1 Enlarged view of the structure at point B in the middle.

[0020] In the figure: 1 coke bin, 2 air delivery pipeline, 3 drive motor, 4 rotating blade, 5 reciprocating screw rod, 6 slide plate, 7 mounting ring, 8 rack rod, 9 gear, 10 spring rod, 11 impact ball, 12 fixing ring, 13 filter screen, 14 hollow cylinder, 15 scraper bar, 16 threaded rod, 17 push plate, 18 limiting groove, 19 limiting rod, 20 sealing plate, 21 telescopic spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0023] Reference Figure 1-Figure 4 A coke preheating device for coke oven exhaust gas comprises a coke bin 1 and an air supply pipe 2 fixedly installed at the bottom end of the coke bin 1, a driving motor 3 is vertically rotatably installed in the air supply pipe 2 through a mounting component, the mounting component comprises a fixing ring 12 and two support rods symmetrically fixedly installed on the outer ring wall of the fixing ring 12, the fixing ring 12 is fixedly sleeved on the driving motor 3, one end of the two support rods are fixedly connected to the inner wall of the air supply pipe 2, a rotating blade 4 is fixedly sleeved on the output shaft of the driving motor 3, a reciprocating screw rod 5 is fixedly installed on the top end of the output shaft of the driving motor 3, a slide plate 6 is threadedly sleeved on the reciprocating screw rod 5, the surface of the air supply pipe 2 is symmetrically and vertically opened with through holes, the two ends of the slide plate 6 pass through the two through holes respectively, and sealing components are provided on the upper and lower surfaces of the slide plate 6.

[0024] Mounting rings 7 are fixedly installed at both ends of the slide plate 6, and a plurality of rack rods 8 are fixedly installed on the upper surface of the mounting ring 7 in a circular shape. A plurality of mounting plates are fixedly installed on the surface of the coke bin 1 in a circular shape. A plurality of rotating rods are equidistantly installed on the surface of the mounting plate for horizontal rotation. A gear 9 is fixedly sleeved on the rotating rod, and a plurality of spring rods 10 are fixedly installed on the surface of the rotating rod in a circular shape. An impact ball 11 is fixedly installed on one end of the spring rod 10 away from the rotating rod, and the plurality of rack rods 8 are respectively meshed and connected with the plurality of gears 9.

[0025] Start the driving motor 3, and the rotating blades 4 will suck the coke oven exhaust gas into the air delivery pipe 2 and pass it into the coke bin 1 during the rotation process. At this time, the reciprocating screw rod 5 fixedly connected to the output shaft of the driving motor 3 will rotate together, and the slide plate 6 threadedly sleeved on the reciprocating screw rod 5 will carry the mounting ring 7 and the plurality of rack rods 8 to perform vertical reciprocating movement under the restriction of the two through-holes. At this time, the plurality of gears 9 respectively meshed with the plurality of rack rods 8 will respectively rotate with the plurality of rotating rods, and the plurality of spring rods 10 and the plurality of impact balls 11 fixedly mounted on the surface of the rotating rods will also rotate together, and the plurality of impact balls 11 will intermittently contact with the coke bin 1 When the impact ball 11 collides with the surface of the coke bin 1, the spring rod 10 will shrink, and when the impact ball 11 no longer contacts the surface of the coke bin 1, the spring rod 10 will stretch and recover quickly. The vibration force generated when the impact ball 11 collides with the coke bin 1 will be transmitted to the coke in the coke bin 1, and the coke in the coke bin 1 will vibrate together. The coke at the bottom of the coke bin 1 is no longer compacted due to the pressure of the coke above, which increases the coke area that the coke oven exhaust gas can pass through, so that the coke above can also contact the coke oven exhaust gas, thereby improving the integrity of the coke preheating.

[0026] A filter screen 13 is fixedly installed in the air supply pipe 2, and the filter screen 13 is used to prevent impurities from entering the coke bin 1. A hollow cylinder 14 is vertically rotatably installed at the center of the lower surface of the filter screen 13. A scraper 15 that is in sliding contact with the filter screen 13 is symmetrically fixedly installed on the surface of the hollow cylinder 14. The inner wall of the hollow cylinder 14 is provided with a thread, and a threaded rod 16 is threadedly installed. The threaded rod 16 is limited in rotation by a limiting component. Two L-shaped push plates 17 are fixedly installed on the upper surface of the slide plate 6. The distance between the top ends of the two push plates 17 is greater than the diameter of the reciprocating screw rod 5 and smaller than the diameter of the threaded rod 16. A telescopic spring 21 is provided in the hollow cylinder 14, and the two ends of the telescopic spring 21 are respectively connected to the filter screen 13 and the threaded rod 16. The limiting component includes a limiting groove 18 vertically opened on the inner wall of the air supply pipe 2 and a limiting rod 19 fixedly installed on the surface of the threaded rod 16. The end of the limiting rod 19 away from the threaded rod 16 is slidably arranged in the limiting groove 18.

[0027] As the slide plate 6 moves upward, the distance between the two push plates 17 and the threaded rod 16 will gradually approach. When the two push plates 17 are in contact with the threaded rod 16 and push it upward, the threaded rod 16 cannot rotate at this time. Therefore, under the action of the thread, the hollow cylinder 14 will rotate with the two scraping strips 15, and the two scraping strips 15 will scrape off the impurities attached to the surface of the filter screen 13, thereby achieving the effect of cleaning the filter screen 13. Then, when the two push plates 17 move downward, the threaded rod 16 will gradually reset under the elastic potential energy of the telescopic spring 21, and the hollow cylinder 14 does not rotate all the time, but only when the two push plates 17 move to contact with the threaded rod 16, the hollow cylinder 14 will rotate, that is, the cleaning of the filter screen 13 by the scraping strips 15 will be intermittent, reducing the wear of the scraping strips 15.

[0028] The sealing component comprises a sealing plate 20 fixedly mounted on the surface of the slide plate 6, and slots are vertically provided on the upper and lower walls of the opening, and a plurality of sealing plates 20 are respectively inserted and slidably sealed in the plurality of slots.

[0029] The sealing plate 20 moves together with the slide plate 6 to prevent the coke oven exhaust gas in the air delivery pipe 2 from slipping out from the opening.

[0030] In the utility model, the driving motor 3 is started, and the rotating blades 4 will suck the coke oven exhaust gas into the air delivery pipe 2 and pass it into the coke bin 1 during the rotation process. At this time, the reciprocating screw rod 5 fixedly connected to the output shaft of the driving motor 3 will rotate together, and the slide plate 6 threadedly sleeved on the reciprocating screw rod 5 will carry the mounting ring 7 and the plurality of rack rods 8 to perform vertical reciprocating movement under the restriction of the two through-holes. At this time, the plurality of gears 9 respectively meshed with the plurality of rack rods 8 will respectively rotate with the plurality of rotating rods, and the plurality of spring rods 10 and the plurality of impact balls 11 fixedly mounted on the surface of the rotating rods will also rotate together, and the plurality of impact balls 11 will intermittently rotate with The surface of the coke bin 1 collides with the impact ball 11, and the spring rod 10 will shrink when the impact ball 11 no longer contacts the surface of the coke bin 1, and the spring rod 10 will quickly stretch and recover. The vibration force generated when the impact ball 11 collides with the coke bin 1 will be transmitted to the coke in the coke bin 1, and the coke in the coke bin 1 will vibrate together. The coke at the bottom of the coke bin 1 is no longer compacted due to the pressure of the coke above, which increases the coke area that the coke oven exhaust gas can pass through, so that the coke above can also contact the coke oven exhaust gas, thereby improving the integrity of the coke preheating.

[0031] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coke preheating device for coke oven exhaust gas, comprising a coke bin (1) and an air delivery pipe (2) fixedly installed at the bottom end of the coke bin (1), characterized in that: A drive motor (3) is vertically rotatably mounted in the air delivery pipe (2) via a mounting component, a rotating blade (4) is fixedly sleeved on the output shaft of the drive motor (3), a reciprocating screw rod (5) is fixedly mounted on the top end of the output shaft of the drive motor (3), a slide plate (6) is threadedly sleeved on the reciprocating screw rod (5), the surface of the air delivery pipe (2) is vertically symmetrically provided with through-holes, the two ends of the slide plate (6) respectively pass through the two through-holes, and sealing components are provided on the upper and lower surfaces of the slide plate (6); Mounting rings (7) are fixedly mounted on both ends of the slide plate (6); a plurality of rack rods (8) are fixedly mounted on the upper surface of the mounting ring (7) in a circular shape; a plurality of mounting plates are fixedly mounted on the surface of the coke bin (1) in a circular shape; a plurality of rotating rods are equidistantly mounted on the surface of the mounting plate for horizontal rotation; a gear (9) is fixedly sleeved on the rotating rod; a plurality of spring rods (10) are fixedly mounted on the surface of the rotating rod in a circular shape; an impact ball (11) is fixedly mounted on one end of the spring rod (10) away from the rotating rod; and a plurality of rack rods (8) are respectively meshed and connected with a plurality of gears (9).

2. The coke preheating device for coke oven exhaust gas according to claim 1, characterized in that: The mounting component comprises a fixing ring (12) and two support rods symmetrically fixedly mounted on the outer ring wall of the fixing ring (12); the fixing ring (12) is fixedly sleeved on the driving motor (3); and one end of the two support rods is fixedly connected to the inner wall of the air supply pipe (2).

3. The coke preheating device for coke oven exhaust gas according to claim 1, characterized in that: A filter screen (13) is fixedly installed in the air supply pipeline (2), and the filter screen (13) is used to prevent impurities from entering the coke bin (1).

4. The coke preheating device for coke oven exhaust gas according to claim 3, characterized in that: A hollow cylinder (14) is vertically rotatably mounted at the center of the lower surface of the filter (13); a scraper bar (15) is symmetrically fixedly mounted on the surface of the hollow cylinder (14) and is in sliding contact with the filter (13); a thread is formed on the inner wall of the hollow cylinder (14) and a threaded rod (16) is threadedly mounted thereon; the threaded rod (16) is restricted in rotation by a restriction component; two L-shaped push plates (17) are fixedly mounted on the upper surface of the slide plate (6); the distance between the top ends of the two push plates (17) is greater than the diameter of the reciprocating screw rod (5) and smaller than the diameter of the threaded rod (16); a telescopic spring (21) is arranged in the hollow cylinder (14); two ends of the telescopic spring (21) are respectively connected to the filter (13) and the threaded rod (16).

5. The coke preheating device for coke oven exhaust gas according to claim 4, characterized in that: The limiting component comprises a limiting groove (18) vertically formed on the inner wall of the air supply pipe (2) and a limiting rod (19) fixedly mounted on the surface of the threaded rod (16); an end of the limiting rod (19) away from the threaded rod (16) is slidably disposed in the limiting groove (18).

6. The coke preheating device for coke oven exhaust gas according to claim 1, characterized in that: The sealing component comprises a sealing plate (20) fixedly mounted on the surface of the slide plate (6), the upper and lower walls of the through opening both being vertically provided with slots, and a plurality of the sealing plates (20) being respectively slidably and sealingly inserted into the plurality of slots.

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