Kiln car with double-layer structure
By designing a kiln car with a double-layer structure, using a combination of flexible and rigid materials, combining heat insulation layer and anti-friction edge-proof, the problem of expansion and friction in the high-temperature reduction process is solved, and the stable movement and safe operation of the kiln car is achieved.
Patent Information
- Application Number
- CN202421610879.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-09
AI Technical Summary
Existing tunnel kiln trucks are difficult to travel during high temperature reduction due to expansion, and are damaged due to friction with tunnel kilns, or are offset and derailed due to lack of side limits during flexible contact.
A double-layer structure kiln car is designed, including the upper car plate, the thermal insulation layer and the lower car plate. The upper car plate is a flexible refractory material and the lower car plate is a rigid refractory material. The hot air is reduced through the protrusions between the plates, and the anti-friction edge is matched with the kiln inner wall lining, and the anti-biased slide plate increases the contact area to reduce pressure.
Through the design of the double-layer structure and thermal insulation layer, the expansion of the lower car plate is reduced, the stability and safety of the kiln car is ensured when moving, avoid derailment and rollover, and reduce frictional damage between the kiln car and the tunnel kiln.
Smart Images
Figure CN222865532U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel kiln cars, and more specifically to a kiln car with a double-layer structure. Background Art
[0002] The existing vanadium-titanium magnetite reduction adopts the tunnel kiln direct reduction method, which enters the tunnel kiln for high-temperature reduction. The high reduction temperature causes the kiln car to expand, making it difficult for the kiln car to move, and causes friction between the kiln car and the tunnel kiln to cause damage; and when the gap between the kiln car and the tunnel kiln is increased or flexible contact is adopted, although the expansion and contact of the kiln car are avoided, the kiln car lacks restrictions on both sides during movement, resulting in deviation during movement; and the temperature at the bottom of the kiln car is too high, causing the wheels of the kiln car to shift, resulting in derailment, and then due to dragging, rollover or scraping, the reaction tank is overturned and ruptured. Utility Model Content
[0003] To solve the above problems, the utility model provides the following technical solutions: a double-layer kiln car, including a tunnel kiln, wherein a kiln car is arranged in the tunnel kiln, and a reaction tank is placed on the kiln car; wheels are arranged at the bottom of the kiln car, characterized in that: the bottom layer of the kiln car is provided with an upper car plate, a heat insulation layer and a lower car plate in sequence; the tunnel kiln is provided with a kiln inner wall lining on the side facing the bottom layer of the kiln car, and the kiln inner wall lining is a flexible refractory material; the tunnel kiln is provided with an inter-plate protrusion facing the heat insulation layer, which is used to reduce the temperature increase of the lower car plate by the upper hot air; the outer side of the upper car plate is provided with an anti-friction edging, which is a flexible refractory material and has a gap fit with the kiln inner wall lining; the lower car plate is a rigid refractory material and has a gap fit with the kiln inner wall lining.
[0004] As a further preferred embodiment of the utility model, the anti-skewness slide plate is fixed on both sides of the lower vehicle plate close to the tunnel kiln, and the anti-skewness slide plate extends downward. The anti-skewness slide plate increases the contact area between the lower vehicle plate and the tunnel kiln, reduces the contact pressure to avoid damage to the tunnel kiln, and further prevents rollover.
[0005] As a further preferred embodiment of the utility model, a baffle is fixed at the bottom end of the tunnel kiln, the baffle and the inner wall of the tunnel kiln form a trough, the baffle is located between the wheels of the kiln car and the anti-deviation slide plate, the setting of the baffle prevents debris from falling and contaminating the track, causing bumps or rollover.
[0006] As a further preferred embodiment of the present invention, a cleaning brush is fixed to the bottom of the anti-deflection slide plate, and the cleaning brush is located at the trough body and is used for cleaning the trough body.
[0007] As a further preferred embodiment of the present invention, the heat insulation layer is made of refractory asbestos to reduce heat exchange between the upper and lower vehicle panels and reduce thermal expansion of the lower vehicle panel.
[0008] As a further preferred embodiment of the present invention, the anti-friction edging and the kiln inner wall lining are made of high-temperature ceramic wool.
[0009] As a further preferred embodiment of the present invention, the spacing between the side wall of the upper car plate and the inner wall of the tunnel kiln is 30-35 mm.
[0010] As a further preferred embodiment of the present invention, the spacing between the side wall of the upper car plate and the inner wall of the tunnel kiln is 40-45 mm.
[0011] The technical effects and advantages of the utility model are as follows: 1. By setting a double-layer car plate and reducing heat transfer through a heat insulation layer, the expansion of the lower layer is reduced, so that the lower car plate can always limit the movement of the kiln car before and after entering the tunnel kiln for heating and reduction.
[0012] 2. The upper car plate has flexible contact to avoid strong friction with the tunnel kiln due to expansion, and the lower car plate has rigid contact to avoid the car body tipping due to insufficient support on the left and right sides.
[0013] 3. The double-layer car plate setting can reduce the temperature at the bottom of the kiln car to avoid derailment of the rail wheels. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of a double-layer kiln car of the utility model.
[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0016] Figure 3 The utility model is a schematic diagram of the structure of the brush plate in the double-layer kiln car.
[0017] The accompanying drawings are marked as follows: 1. tunnel kiln; 2. reaction tank; 3. kiln car; 4. upper car plate; 5. thermal insulation layer; 6. lower car plate; 7. wheel; 8. anti-friction edging; 9. kiln inner wall lining; 10. protrusion between plates; 11. anti-skewness slide plate; 12. baffle; 13. cleaning brush. DETAILED DESCRIPTION
[0018] 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.
[0019] like Figure 1-Figure 3A double-layer kiln car 3 is shown, comprising a tunnel kiln 1, wherein the kiln car 3 is provided in the tunnel kiln 1, and a reaction tank 2 is placed on the kiln car 3; wheels 7 are provided at the bottom of the kiln car 3, characterized in that: the bottom layer of the kiln car 3 is provided with an upper car plate 4, a heat insulation layer 5 and a lower car plate 6 in sequence; the tunnel kiln 1 is provided with a kiln inner wall lining 9 on the side facing the bottom layer of the kiln car 3, and the kiln inner wall lining 9 is a flexible refractory material; the tunnel kiln 1 is provided with an inter-plate protrusion 10 towards the heat insulation layer 5, which is used to reduce the temperature increase of the lower car plate 6 by the upper hot air; the upper An anti-friction edging 8 is provided on the outer side of the car plate 4. The anti-friction edging 8 is a flexible refractory material such as high-temperature ceramic wool, and is gapped with the kiln inner wall lining 9. The interval between the side wall of the upper car plate 4 and the inner wall of the tunnel kiln is 30 mm; the lower car plate 6 is a rigid refractory material such as steel, and is gapped with the kiln inner wall lining 9. The interval between the side wall of the upper car plate 4 and the inner wall of the tunnel kiln is 40 mm. The thermal insulation layer 5 is made of refractory asbestos, which is used to reduce the heat exchange between the upper car plate 4 and the lower car plate 6, and reduce the thermal expansion of the lower car plate 6.
[0020] In the embodiment of the utility model, the side wall of the upper car plate 4 is spaced 35 mm from the inner wall of the tunnel kiln; the side wall of the lower car plate 6 is spaced 45 mm from the inner wall of the tunnel kiln to accommodate more expansion.
[0021] like Figure 2 As shown, in the embodiment of the utility model, the anti-skewness slide plate 11 is fixed on both sides of the lower vehicle plate 6 near the tunnel kiln 1, and the anti-skewness slide plate 11 extends downward. The anti-skewness slide plate 11 increases the contact area between the lower vehicle plate 6 and the tunnel kiln 1, reduces the contact pressure to avoid damage to the tunnel kiln 1, and further prevents rollover.
[0022] like Figure 2 As shown in Figure 3, in an embodiment of the utility model, a baffle 12 is fixed to the bottom end of the tunnel kiln 1, and the baffle 12 forms a trough with the inner wall of the tunnel kiln 1. The baffle 12 is located between the wheels 7 of the kiln car 3 and the anti-skew slide plate 11. The setting of the baffle 12 prevents debris from falling and contaminating the track, causing bumps or rollover.
[0023] like Figure 3 As shown, in the embodiment of the utility model, a cleaning brush 13 is fixed at the bottom of the anti-deflection slide plate 11, and the brush body of the cleaning brush 13 is a wire brush. The cleaning brush 13 is located at the trough body and is used to clean the trough body.
[0024] During the working process of the utility model, the tunnel kiln 1 heats the kiln car 3 reaction tank 2, and a double-layer car plate is set, and the heat transfer is reduced through the insulation layer 5, thereby reducing the expansion of the lower layer, so that the lower car plate 6 is in rigid contact and can always limit the movement of the kiln car 3 before and after entering the tunnel kiln 1 for heating and reduction. The upper car plate 4 is in flexible contact to avoid strong friction with the tunnel kiln 1 after expansion, and the lower car plate 6 is in rigid contact to avoid the car body from tipping over due to insufficient support on the left and right sides.
[0025] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.
[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A double-layer kiln car, comprising a tunnel kiln, wherein a kiln car is arranged in the tunnel kiln, and a reaction tank is placed on the kiln car; wheels are arranged at the bottom of the kiln car, characterized in that; The bottom layer of the kiln car is provided with an upper car plate, an insulation layer and a lower car plate in sequence; the tunnel kiln is provided with a kiln inner wall lining on the side facing the bottom layer of the kiln car, and the kiln inner wall lining is a flexible refractory material; the tunnel kiln is provided with an inter-plate protrusion facing the insulation layer; the outer side of the upper car plate is provided with an anti-friction edging, and the anti-friction edging is a flexible refractory material and has a gap fit with the kiln inner wall lining; the lower car plate is a rigid refractory material and has a gap fit with the kiln inner wall lining.
2. A double-layer kiln car according to claim 1, characterized in that: Anti-deviation slide plates are fixed on both sides of the lower car plate near the tunnel kiln, and the anti-deviation slide plates extend downward.
3. A double-layer kiln car according to claim 2, characterized in that: A baffle is fixed at the bottom end of the tunnel kiln. The baffle and the inner wall of the tunnel kiln form a trough body. The baffle is located between the wheels of the kiln car and the anti-deviation slide plate.
4. A double-layer kiln car according to claim 3, characterized in that: A cleaning brush is fixed at the bottom of the anti-deflection slide plate, and the cleaning brush is located at the groove body.
5. The double-layer kiln car according to claim 1, characterized in that: The heat insulation layer is made of refractory asbestos.
6. The double-layer kiln car according to claim 1, characterized in that: The anti-friction edging and kiln inner wall lining are made of high-temperature ceramic wool.
7. The double-layer kiln car according to claim 1, characterized in that: The spacing between the side wall of the upper car plate and the inner wall of the tunnel kiln is 30-35 mm.
8. The double-layer kiln car according to claim 2, characterized in that: The spacing between the side wall of the upper car plate and the inner wall of the tunnel kiln is 40-45 mm.