Novel belt type roasting machine

Abstract

The utility model discloses a novel belt type roasting machine, which belongs to the technical field of roasting equipment and comprises a trolley, the trolley comprises a central trolley body, end beams are symmetrically and fixedly mounted at two ends of the central trolley body, upper breast boards are fixedly mounted on the upper portions of the end beams, wheel shafts are fixedly mounted on the outer walls of the end beams, and traveling wheels are assembled on the wheel shafts through bearings. The center vehicle body is in an arc shape, the end beams are installed in a non-vertical mode, the upper breast board is of a step-shaped structure with the upper portion narrower than the lower portion, and through optimization design of bending deflection of the center vehicle body, installation angles of the end beams and the structure of the upper breast board and reasonable selection of materials of all key components, a stress model of equipment is optimized on the whole; the stress concentration phenomenon is effectively relieved, the stability and non-deformability of the structure under high temperature and heavy load are remarkably improved, the service life of the main body structure of equipment is prolonged fundamentally, the maintenance and replacement frequency of the equipment is reduced, the production cost is reduced, and good economic benefits and social benefits are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of roasting equipment, and specifically provides a novel belt roasting machine. Background Technology

[0002] Belt calciners are key equipment in the sintering and pelletizing process, and their performance directly affects production efficiency and product quality. In existing belt calciner designs, the central car body typically employs a traditional rigid structure, lacking proper design for bending deflection. Under long-term high-temperature and heavy-load operating environments, this easily leads to deformation and cracking, resulting in a shortened service life. Simultaneously, the end beams are mostly installed vertically, causing uneven stress distribution and further exacerbating structural damage. Furthermore, the choice of materials also significantly impacts the service life of the belt calciner. In traditional domestic belt calciners, components such as the central car body, end beams, and upper rails are mostly made of ordinary carbon steel or low-alloy steel. These materials have poor oxidation and corrosion resistance under high-temperature and corrosive environments, making it difficult to meet the requirements for long-term stable operation. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a novel belt roasting machine.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a novel belt roasting machine, comprising a trolley, the trolley comprising a central body, end beams symmetrically fixedly installed at both ends of the central body, upper railings fixedly installed on the upper part of each end beam, axles fixedly installed on the outer wall of the end beams, and travel wheels assembled on the axles via bearings, the central body being arc-shaped, the end beams being non-vertically installed, and the cross-section of the end beams being a trapezoidal shape narrower at the top and wider at the bottom, the upper railings being a stepped structure narrower at the top and wider at the bottom, and the outer peripheral wall of the travel wheels being integrally formed with a rim.

[0005] Furthermore, the wheel axle includes a mounting shaft and an adjusting shaft. The outer wall of the end beam has a mounting hole, and the mounting shaft is fixedly installed in the mounting hole. The outer end of the mounting shaft has a deflection cavity, and the inner wall of the deflection cavity has a propulsion cavity. A hinge shaft is fixedly installed in the deflection cavity. A hinge plate is fixedly installed at the inner end of the adjusting shaft, and the hinge plate is hingedly assembled on the hinge shaft. The inner end face of the adjusting shaft is in contact with the outer end face of the mounting shaft, and the upper half of the inner end face of the adjusting shaft is an inclined surface.

[0006] Furthermore, the axle also includes a mounting body, the outer wall of which is symmetrically provided with countersunk holes, and the two end faces of the hinge shaft are respectively provided with threaded grooves with opposite directions of rotation. The mounting body is screwed into the threaded grooves after passing through the countersunk holes.

[0007] Furthermore, a push plate is movable within the propulsion cavity, and a thermally expanding material is filled between the propulsion cavity and the push plate. A positioning rod is fixedly installed on the outer wall of the push plate. A through hole is opened on the circumferential surface of the hinge shaft. A limit baffle is fixedly installed at the end of the inner wall of the propulsion cavity, and the positioning rod is inserted into the through hole after passing through the limit baffle. A positioning groove matching the positioning rod is opened on the inner end face of the adjusting shaft.

[0008] Furthermore, the thermally expanding material is a liquid metal or an inert gas.

[0009] Furthermore, the lower surface of the positioning groove has a chamfer at its outer end.

[0010] Furthermore, the bends in the stepped structure of the upper panel are rounded.

[0011] The beneficial effects of using this utility model are:

[0012] This invention optimizes the stress model of the equipment by optimizing the design of the central body bending deflection, end beam installation angle, and upper panel structure, as well as by rationally selecting materials for key components. These measures effectively alleviate stress concentration, significantly improve the stability and deformation resistance of the structure under high temperature and heavy load, fundamentally extend the service life of the main structure, reduce the frequency of equipment maintenance and replacement, lower production costs, and improve production efficiency, resulting in good economic and social benefits.

[0013] This invention designs an adaptive wheel and axle system that automatically adjusts the angle of the traveling wheels according to changes in vehicle body condition and temperature, ensuring optimal contact with the track at all times. This solves problems such as abnormal wear and increased resistance caused by wheel tilting due to vehicle body deformation, reducing operating energy consumption and significantly improving the stability and safety of equipment operation. Attached Figure Description

[0014] Figure 1 This is one of the three-dimensional schematic diagrams of this utility model.

[0015] Figure 2 This is the second three-dimensional schematic diagram of the present invention.

[0016] Figure 3 This is a top sectional view of the axle and the traveling wheel of this utility model.

[0017] Figure 4 This is a front sectional view of the wheel axle in state one of this utility model.

[0018] Figure 5 This is a front sectional view of the wheel axle in state two of this utility model.

[0019] The reference numerals in the attached drawings include: 1. Central vehicle body, 2. End beam, 3. Upper side panel, 4. Axle, 41. Mounting shaft, 411. Deflection cavity, 412. Propulsion cavity, 413. Hinge shaft, 414. Push plate, 415. Positioning rod, 416. Mounting body, 417. Limiting baffle, 42. Adjusting shaft, 421. Hinge plate, 422. Positioning groove, 5. Traveling wheel, 51. Wheel flange. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1 to 5 A novel belt roasting machine includes a trolley, which includes a central body 1. End beams 2 are symmetrically fixedly installed at both ends of the central body 1. Upper rails 3 are fixedly installed on the upper part of the end beams 2. Axles 4 are fixedly installed on the outer wall of the end beams 2. Traveling wheels 5 are assembled on the axles 4 through bearings. The central body 1 is arc-shaped, the end beams 2 are not vertically installed, and the cross-section of the end beams 2 is a trapezoidal shape that is narrower at the top and wider at the bottom. The upper rails 3 have a stepped structure that is narrower at the top and wider at the bottom. The bends of the stepped structure of the upper rails 3 are rounded. The outer peripheral wall of the traveling wheels 5 is integrally formed with a wheel flange 51.

[0022] The central car body 1 has a built-in bending deflection of 22mm. This design can effectively alleviate the stress concentration problem caused by high temperature and load during operation. When the belt roaster is running, the various stresses on the central car body 1 can be released to a certain extent through its own bending deflection, thereby reducing the risk of deformation and cracking and improving the stability and reliability of the structure.

[0023] Because the overall size of the central body 1 is relatively large, the angle formed by the 22mm bending deflection is relatively small (e.g., Figure 1 As shown in the figure, when the central vehicle body 1 reaches a horizontal state due to the influence of the material's gravity and thermal expansion, its horizontal length extension is very small, so this application will not elaborate on this.

[0024] The two end beams 2 are installed in a non-vertical manner, meaning that the end beams 2 form a certain angle with the vertical direction. This angled installation method allows the end beams 2 to bear loads more evenly, improving the stress state of the end beams 2, reducing damage caused by uneven stress, and further improving the overall service life of the belt roaster.

[0025] The structural design of the upper panel 3 gives it higher rigidity, and the rounded corners at the bends make the entire stepped surface a continuous curved surface, which can reduce the stress it is subjected to.

[0026] The center car body 1 is made of ASTM A217WC6 material, and the internal control standard reduces the range of phosphorus (P) and sulfur (S) elements compared to this standard. P and S are harmful impurities in steel; reducing their content can improve the material's toughness and corrosion resistance. Compared to commonly used center car body materials in China (such as ordinary alloy steel), ASTM A217WC6 material has higher high-temperature strength and oxidation resistance, enabling long-term stable operation in high-temperature environments. Traditional domestic materials are prone to oxidation and grain coarsening at high temperatures, leading to a decrease in strength. The material used in this invention effectively overcomes these problems, extending the service life of the center car body 1.

[0027] End beam 2 is made of G20Mo5 material according to EN10293 standard. G20Mo5 is a high-quality low-alloy heat-resistant steel with good high-temperature strength, toughness, and fatigue resistance. Domestically, end beams are often made of ordinary carbon structural steel or low-alloy steel, such as Q345. These materials have poor fatigue resistance under high-temperature and high-load conditions and are prone to fatigue cracking. G20Mo5 material, however, can better withstand the alternating loads experienced by end beam 2 during operation, reducing fatigue damage and significantly improving the service life of end beam 2.

[0028] The upper plate 3 is made of GX40CrNiSi25-12 material as specified in EN10295. This material is a high-chromium-nickel alloy cast steel with excellent high-temperature resistance, oxidation resistance, and corrosion resistance. During the operation of the belt roaster, the upper plate is in direct contact with high-temperature materials and corrosive gases. Commonly used upper plate materials in China (such as ordinary stainless steel or low-alloy heat-resistant steel) are prone to oxidation, peeling, corrosion, and perforation under such harsh conditions. However, GX40CrNiSi25-12 material can effectively resist high-temperature oxidation and corrosion, maintaining the integrity and stability of the upper plate 3, thereby improving its service life.

[0029] Specifically, the wheel axle 4 includes a mounting shaft 41 and an adjusting shaft 42. The outer wall of the end beam 2 is provided with a mounting hole, and the mounting shaft 41 is fixedly installed in the mounting hole. The outer end of the mounting shaft 41 is provided with a deflection cavity 411, and the inner wall of the deflection cavity 411 is provided with a propulsion cavity 412. A hinge shaft 413 is fixedly installed in the deflection cavity 411. A hinge plate 421 is fixedly installed in the inner end of the adjusting shaft 42, and the hinge plate 421 is hingedly assembled on the hinge shaft 413. The inner end face of the adjusting shaft 42 is in contact with the outer end face of the mounting shaft 41, and the upper half of the inner end face of the adjusting shaft 42 is an inclined surface.

[0030] Mounting shaft 41 can be either a round shaft or a square shaft, depending on the actual application.

[0031] The hinge plate 421 has a circular hole for fitting onto the hinge shaft 413, so that the adjusting shaft 42 can deflect along the hinge shaft 413.

[0032] Specifically, the wheel axle 4 also includes a mounting body 416. The outer wall of the mounting shaft 41 is symmetrically provided with countersunk holes, and the two end faces of the hinge shaft 413 are respectively provided with threaded grooves with opposite directions of rotation. The mounting body 416 is screwed into the threaded grooves after passing through the countersunk holes.

[0033] The hinge shaft 413 is securely installed by the reverse threaded connection of the two mounting bodies 416, and the connection between the mounting shaft 41 and the adjusting shaft 42 is facilitated.

[0034] The outer surface of the mounting shaft 41 is provided with a pin groove, and the end beam 2 is provided with a pin hole, so that the positioning and fixing are completed by the pin.

[0035] Specifically, a push plate 414 is movably mounted inside the propulsion cavity 412, and a thermally expanding material is filled between the propulsion cavity 412 and the push plate 414. A positioning rod 415 is fixedly installed on the outer wall of the push plate 414. A through hole is opened on the circumferential surface of the hinge shaft 413. A limit baffle 417 is fixedly installed at the end of the inner wall of the propulsion cavity 412, and the positioning rod 415 is inserted into the through hole after passing through the limit baffle 417. A positioning groove 422 matching the positioning rod 415 is opened on the inner end face of the adjusting shaft 42.

[0036] The limiting baffle 417 is used to limit the range of movement of the push plate 414 within the propulsion chamber 412.

[0037] Specifically, the thermally expanding material is either liquid metal or inert gas.

[0038] Liquid metals can be low-melting-point liquid metal alloys, such as gallium indium tin alloys, which have a significantly higher coefficient of volume expansion than ordinary liquids, can generate huge driving forces, have excellent thermal conductivity, and respond quickly.

[0039] The inert gas can be argon or helium. When the temperature rises, the pressure increases sharply, pushing the pusher plate 414. The inert gas is not sensitive to extreme temperatures and will not undergo phase change or decomposition, thus ensuring high reliability.

[0040] In addition, in some cases, a solid piston structure can be used, employing solids with different coefficients of thermal expansion, and utilizing the expansion of the thermal expansion alloy to drive the pusher plate 414 to move.

[0041] Specifically, the lower surface of the positioning groove 422 has a chamfer at the outer end to facilitate the positioning rod 415 moving into the positioning groove 422.

[0042] When the central vehicle body 1 is bent, it is state one;

[0043] Because the central car body 1 is curved, although the bending angle is very small, when applied to a traditional belt roaster, it will cause the traveling wheel 5 to be in an inclined state, which will prevent the traveling wheel 5 from fully contacting the track plane, resulting in line contact or extremely irregular narrow surface contact. This will cause a sharp increase in contact stress, accelerate the wear of the traveling wheel 5 and the track, increase running resistance, increase energy consumption, and in severe cases, interfere with steering, affecting normal operation and safety. Therefore, by designing the inclined surface on the adjusting shaft 42 and the hinged assembly of the adjusting shaft 42 and the mounting shaft 41, when the central car body 1 is in a curved state, the adjusting shaft 42 is deflected and the inclined surface contacts the mounting shaft 41 to form support, so that the traveling wheel 5 is in a horizontal state.

[0044] When the central car body 1 approaches a horizontal state under the influence of the material's gravity and thermal expansion, it is in state two. Heat will be transferred to the thermally expanding material, which will then push the push plate 414 and the positioning rod 415 to move. The positioning rod 415 will eventually move into the positioning groove 422 and, through its shape, cause the adjusting shaft 42 to deflect, so that the traveling wheel 5 remains in a horizontal state, ensuring the smooth operation of the traveling wheel 5 on the track and avoiding damage.

[0045] The above content is only a preferred embodiment of this utility model. For those skilled in the art, many changes can be made in the specific implementation and application scope based on the concept of this utility model. As long as these changes do not depart from the concept of this utility model, they all fall within the protection scope of this utility model.

Claims

1. A novel belt roasting machine, characterized in that: The device includes a trolley, which has a central body. End beams are symmetrically fixedly installed at both ends of the central body. Upper rails are fixedly installed on the upper part of each end beam. Axles are fixedly installed on the outer wall of each end beam. Traveling wheels are mounted on the axles via bearings. The central body is arc-shaped. The end beams are not vertically installed and have a trapezoidal cross-section that is narrower at the top and wider at the bottom. The upper rails have a stepped structure that is narrower at the top and wider at the bottom. The outer circumferential wall of each traveling wheel has an integrally formed rim.

2. The novel belt roaster according to claim 1, characterized in that: The axle includes a mounting shaft and an adjusting shaft. The outer wall of the end beam has a mounting hole, and the mounting shaft is fixedly installed in the mounting hole. The outer end of the mounting shaft has a deflection cavity, and the inner wall of the deflection cavity has a propulsion cavity. A hinge shaft is fixedly installed in the deflection cavity. A hinge plate is fixedly installed at the inner end of the adjusting shaft, and the hinge plate is hingedly assembled on the hinge shaft. The inner end face of the adjusting shaft is in contact with the outer end face of the mounting shaft, and the upper half of the inner end face of the adjusting shaft is an inclined surface.

3. A novel belt roasting machine according to claim 2, characterized in that: The axle also includes a mounting body. The outer wall of the mounting shaft is symmetrically provided with countersunk holes. The two ends of the hinge shaft are respectively provided with threaded grooves with opposite directions of rotation. The mounting body is screwed into the threaded grooves after passing through the countersunk holes.

4. A novel belt roasting machine according to claim 2, characterized in that: A push plate is movable inside the propulsion chamber, and a thermally expanding material is filled between the propulsion chamber and the push plate. A positioning rod is fixedly installed on the outer wall of the push plate. A through hole is opened on the circumferential surface of the hinge shaft. A limit baffle is fixedly installed at the end of the inner wall of the propulsion chamber, and the positioning rod is inserted into the through hole after passing through the limit baffle. A positioning groove matching the positioning rod is opened on the inner end face of the adjusting shaft.

5. A novel belt roaster according to claim 4, characterized in that: The thermally expanding substance is a liquid metal or an inert gas.

6. A novel belt roaster according to claim 4, characterized in that: The lower surface of the positioning groove has a chamfer at its outer end.

7. A novel belt roaster according to claim 1, characterized in that: The stepped structure of the upper panel has rounded corners at the bends.

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