Trolley slideway structure for reducing air leakage rate of sintering machine

Abstract

The invention provides a trolley slideway structure for reducing the air leakage rate of a sintering machine, which comprises an equilateral triangle chute arranged in a lower slideway of a trolley, the equilateral triangle chute is 50mm in depth, the inner side inclination angle is 45 degrees, and the outer side is provided with a side hole communicated with a locking mechanism; the right-angle side of the equilateral triangle graphite sealing strip is 48mm, the equilateral triangle graphite sealing strip is made of 0.8-1.0 g / cm < 3 > light graphite, the length is 2m, and the outer side of the equilateral triangle graphite sealing strip is provided with a locking step structure; the diameter of a push rod of the elastic locking mechanism in the middle of the outer side of the chute is 20 mm. When the sintering machine operates, the graphite sealing strip blocks a slideway gap under the atmospheric pressure to realize sealing due to the internal and external pressure difference of the system, and the elastic locking mechanism can avoid excessive abrasion and buffer vibration of the sealing strip. The air leakage rate is effectively reduced, abrasion and vibration influences are relieved, energy conservation, efficiency improvement and cost reduction are achieved, and the method is suitable for the field of sintering machine equipment.

Description

Technical Field

[0001] The invention relates to the technical field of sintering equipment, and in particular to a trolley slideway structure for reducing the air leakage rate of a sintering machine. Background Art

[0002] The sintering process is a production behavior that draws in external air to participate in the melting and solidification of sintering materials. The exhaust fan suction force forms a negative pressure inside the sintering system, and the external air enters the sintering system under the action of the internal and external pressure difference. Since the mechanical structure of the sintering system works for a long time under high temperature, vibration, wear and other conditions, it is difficult to ensure the long-term sealing of the mechanical connections of the sintering system. The gap between the lower slides of the sintering machine trolley is the main air leakage point of the sintering machine body. The horizontal length of the trolley of a large sintering machine is more than 100m. Therefore, a large amount of invalid air flows into the sintering system from the gaps of the lower slides on both sides of the sintering machine trolley. On the premise of ensuring the effective air volume required for the sintering material layer, it is inevitable that the power consumption of the main exhaust fan and the sintering cost will be greatly increased. Summary of the invention

[0003] According to the technical problem that a large amount of invalid air flows into the sintering system from the gaps of the lower slideways on both sides of the sintering machine trolley, a structure for reducing the air leakage rate of the lower slideway of the sintering machine trolley is provided. The device of the present invention designs an inclined chute inside the lower slideway of the sintering machine trolley, and places a long strip of graphite sealing strip with a triangular cross section in the chute. After the sintering machine is running, a pressure difference of about 10kPa will be generated inside and outside the sintering system. The graphite sealing strip is blocked in the gap of the lower slideway of the sintering trolley under the action of atmospheric pressure, thereby sealing the gap of the lower slideway of the sintering machine trolley. An elastic locking mechanism is provided on the outer side of the lower slideway to prevent the atmospheric pressure from continuously exerting force to accelerate the wear of the graphite sealing strip. At the same time, the elastic design of the locking mechanism can buffer the impact of the large vibration of the sintering trolley on the graphite sealing strip.

[0004] The technical means adopted by the present invention are as follows:

[0005] A trolley slideway structure for reducing air leakage rate of a sintering machine, comprising: a chute, a graphite sealing strip, and an elastic locking mechanism;

[0006] The chute is an equilateral triangle and is set inside the lower slide of the sintering machine trolley. The chute depth is 50mm, the inner side of the chute is inclined at an angle of 45°, and the outer side of the chute is provided with a side hole for connecting the locking mechanism;

[0007] The graphite sealing strip is an equilateral triangle and is placed in the chute of the lower slide of the trolley. The length of the two right-angled sides of the sealing strip is 48mm, and the material is 0.8 to 1.0g / cm 3 Lightweight graphite, the length of a single graphite sealing strip is 2m, and the outer side is processed with a stepped structure for locking;

[0008] The elastic locking mechanism is arranged in the middle of the outer side of the chute of the lower slide of the trolley, and includes a push rod with a diameter of 20mm. The push rod is inserted into a positioning hole with a hole diameter of 30mm on the outer side of the chute to elastically lock the graphite sealing strip.

[0009] Furthermore, the gap between the push rod and the side hole of the lower slide channel is connected to the inside and outside of the sintering system.

[0010] Furthermore, when the sintering machine trolley is in normal operation, there is a pressure difference of about 10 kPa between the inner and outer slideways of the trolley. The graphite sealing strip slides upward under the action of atmospheric pressure and blocks the gap between the upper and lower slideways, thereby achieving dynamic sealing of the gap.

[0011] Furthermore, after the push rod of the elastic locking mechanism locks the graphite sealing strip, the graphite sealing strip will not be displaced under the action of atmospheric pressure.

[0012] Furthermore, the elastic locking mechanism is provided with a buffer spring assembly.

[0013] Furthermore, the diameter of the side hole of the equilateral triangle chute is 30 mm, and the push rod is inserted into the positioning hole to elastically lock the graphite sealing strip.

[0014] Furthermore, the chute is arranged within the horizontal length range of the lower slideway of the sintering machine trolley, and graphite sealing strips are arranged at intervals of every 2 meters to ensure uniform sealing over the entire length of the slideway.

[0015] Due to the adoption of the above technical solution, compared with the prior art, the present invention has the following advantages:

[0016] 1. The present invention provides a trolley slideway structure for reducing the air leakage rate of a sintering machine. The negative pressure of the sintering system is used to block the slideway gap with a graphite sealing strip, which significantly reduces the air leakage rate of the sintering machine body, reduces the influx of invalid air, and improves the sealing of the sintering system.

[0017] 2. The present invention provides a trolley slide structure for reducing the air leakage rate of a sintering machine. The design of the elastic locking mechanism, on the one hand, avoids the continuous force of atmospheric pressure to accelerate the wear of the graphite sealing strip, and on the other hand, can buffer the impact of the large vibration of the sintering trolley on the graphite sealing strip, thereby extending the service life of the graphite sealing strip, ensuring the durability of the sealing effect, and helping to reduce equipment maintenance costs.

[0018] 3. The trolley slide structure for reducing the air leakage rate of the sintering machine provided by the present invention can significantly reduce the power consumption of the main exhaust fan by reducing the air leakage rate while ensuring the effective air volume required for the sintering material layer, thereby reducing the sintering cost and improving production efficiency. While bringing economic benefits to the enterprise, it also meets the environmental protection requirements of energy conservation and emission reduction.

[0019] Based on the above reasons, the present invention can be widely promoted in the technical field of sintering equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is an overall schematic diagram of a trolley slideway structure for reducing the air leakage rate of a sintering machine according to the present invention.

[0022] In the figure: 1. grate bars at the bottom of the trolley; 2. upper slideway of the trolley; 3. inner gap between the upper slideway and the lower slideway of the trolley; 4. graphite sealing strip; 5. lower slideway of the trolley; 6. gap between the elastic locking mechanism and the hole wall of the lower slideway; 7. push rod; 8. elastic locking mechanism; 9. outer gap between the upper slideway and the lower slideway of the trolley; 10. axle of the sintering trolley; 11. wheels of the sintering trolley; 12. rails of the sintering trolley; 13. rail base of the sintering trolley. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described 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, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0030] Example 1

[0031] like Figure 1 As shown, the present invention provides a trolley slideway structure for reducing the air leakage rate of a sintering machine, comprising: a chute, a graphite sealing strip 4, and an elastic locking mechanism 8;

[0032] The chute is an equilateral triangle and is arranged inside the lower slideway 5 of the sintering machine trolley. The chute depth is 50 mm, the inner side of the chute is inclined at an angle of 45°, and the outer side of the chute is provided with a side hole for connecting the locking mechanism;

[0033] The graphite sealing strip 4 is an equilateral triangle and is placed in the chute of the lower slideway 5 of the trolley. The length of the two right-angled sides of the sealing strip is 48mm, and the material is 0.8 to 1.0g / cm 3 Lightweight graphite, the length of a single graphite sealing strip 4 is 2m, and the outer side is processed with a stepped structure for locking;

[0034] The elastic locking mechanism 8 is arranged in the middle part of the outer side of the chute of the lower slideway 5 of the trolley, and includes a push rod 7. The push rod 7 has a diameter of 20 mm. The push rod 7 is inserted into the positioning hole with a diameter of 30 mm on the outer side of the chute through the gap 6 between the elastic locking mechanism and the wall of the lower slideway, and elastically locks the graphite sealing strip 4. The upper outer part of the push rod 7 is the outer gap 9 between the upper slideway of the trolley and the lower slideway.

[0035] An equilateral triangle chute is set at the center of the lower slideway 5 of the sintering machine trolley. The chute depth is 50mm, the inner side of the chute is inclined at an angle of 45°, and a push rod 7 with a diameter of 20mm is provided at the middle side hole of the outer side of the chute. The push rod 7 is inserted into the positioning hole with a diameter of 30mm on the outer side of the lower slideway to elastically lock the graphite sealing strip 4. A graphite sealing strip 4 with an equilateral triangle cross section is placed in the chute of the lower slideway 55 of the trolley. The length of the right angle side of the cross section of the graphite sealing strip 4 is 48mm, and the material of the graphite sealing strip 4 is a density of 0.8 to 1.0g / cm 3 Lightweight graphite, the length of a single graphite sealing strip 4 is 2m.

[0036] Example 2

[0037] The sintering trolley structure includes a trolley lower grate 1, a sintering trolley wheel axle 10, a sintering trolley wheel 11, a sintering trolley track 12, and a sintering trolley track base 13. 2The horizontal length of the lower slide 5 of the sintering machine trolley is 100m. 50 graphite sealing strips 4 need to be laid in the lower slide 5 of the trolley for sealing. The spacing between the upper slide 2 of the trolley and the lower slide is adjusted to 2 to 3mm. The sintering machine is operated after the main exhaust fan is operated. Under the action of the main exhaust fan, a pressure difference of 9.6kpa is generated between the inner and outer sides of the lower slide. The graphite sealing strip 4 slides upward under the action of the atmospheric pressure between the push rod 7 and the side hole of the lower slide 5 of the trolley. The atmospheric pressure blocks the graphite sealing strip 4 in the inner gap 3 between the upper slide of the trolley and the lower slide. The push rod 7 of the positioner on the outer side of the lower slide is used to lock the position of the graphite sealing strip 4.

[0038] 600m 2 The oxygen content and air leakage rate of each part before the sintering machine was modified into the lower slide of the trolley are shown in Table 1. The oxygen content and air leakage rate of each part after using this technology are shown in Table 2.

[0039] Table 1 Test results of oxygen content and air leakage rate in various parts of sintering machine

[0040]

[0041] Table 2 Test results of oxygen content and air leakage rate in various parts of sintering machine

[0042]

[0043]

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A trolley slideway structure for reducing the air leakage rate of a sintering machine, characterized in that: include: Chute, graphite sealing strip, elastic locking mechanism; The chute is an equilateral triangle and is arranged inside the lower slideway of the sintering machine trolley. The chute depth is 50 mm, the inner side of the chute is inclined at an angle of 45°, and the outer side of the chute is provided with a side hole for connecting the locking mechanism; The graphite sealing strip is an equilateral triangle and is placed in the chute of the lower slide of the trolley. The length of the two right-angled sides of the sealing strip is 48mm, and the material is 0.8 to 1.0g / cm 3 Lightweight graphite, the length of a single graphite sealing strip is 2m, and the outer side is processed with a stepped structure for locking; The elastic locking mechanism is arranged in the middle of the outer side of the chute of the lower slide of the trolley, and includes a push rod with a diameter of 20mm. The push rod is inserted into a positioning hole with a hole diameter of 30mm on the outer side of the chute to elastically lock the graphite sealing strip.

2. A trolley slideway structure for reducing air leakage rate of a sintering machine according to claim 1, characterized in that: The gap between the push rod and the side hole of the lower slide channel is connected to the inside and outside of the sintering system.

3. The trolley slideway structure for reducing the air leakage rate of a sintering machine according to claim 1, characterized in that: When the sintering machine trolley is in normal operation, there is a pressure difference of about 10 kPa between the inner and outer slideways of the trolley. The graphite sealing strip slides upward under the action of atmospheric pressure and blocks the gap between the upper and lower slideways to achieve dynamic sealing of the gap.

4. The trolley slideway structure for reducing the air leakage rate of a sintering machine according to claim 1, characterized in that: After the push rod of the elastic locking mechanism locks the graphite sealing strip, the graphite sealing strip will not be displaced under the action of atmospheric pressure.

5. The trolley slideway structure for reducing the air leakage rate of a sintering machine according to claim 1, characterized in that: The elastic locking mechanism is provided with a buffer spring assembly.

6. The trolley slideway structure for reducing the air leakage rate of a sintering machine according to claim 1, characterized in that: The diameter of the side hole of the equilateral triangle chute is 30 mm, and the push rod is inserted into the positioning hole to elastically lock the graphite sealing strip.

7. The trolley slideway structure for reducing the air leakage rate of a sintering machine according to claim 1, characterized in that: The chute is arranged within the horizontal length range of the lower slideway of the sintering machine trolley, and graphite sealing strips are arranged at intervals of 2 meters to ensure uniform sealing over the entire slideway length.

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