Driving device, kiln car and tunnel kiln

Abstract

The utility model discloses a driving device, a kiln car and a tunnel kiln, the driving device comprises a chain wheel, a chain is sleeved on the chain wheel, and a plurality of driving pieces are fixed on the chain at intervals; and the stop block is fixed on the kiln car. The kiln car is driven by the driving device to move; stop blocks are arranged at the bottom of the kiln car at intervals in the running direction. The tunnel kiln comprises a kiln body, the kiln car and the driving device. A pit used for containing the chain wheel and the chain is formed in the bottom of the kiln body, and the driving piece located on the chain on the upper side protrudes out of the pit. Due to the fact that the driving pieces are distributed at intervals, the continuous moving distance of the kiln car under the inertia effect is smaller than the distance between every two adjacent driving pieces, the check blocks can be separated from the driving pieces abutting against the check blocks when the check blocks move along with the kiln car, but the check blocks cannot be connected with the next driving piece before the check blocks are static, and the kiln car moving due to inertia cannot reversely drive an external motor.

Description

Technical Field

[0001] This utility model mainly relates to the field of tunnel kiln technology, and in particular to a drive device, kiln car and tunnel kiln. Background Technology

[0002] A tunnel kiln is a modern, continuous firing thermal equipment constructed from refractory, insulation, and building materials. It resembles a tunnel and contains kiln cars and other transport vehicles. The function of the kiln cars in a tunnel kiln is to feed the materials to be fired into the kiln, where they undergo preheating and continuous high-temperature sintering before being transported out of the kiln through a cooling section.

[0003] To achieve controllable operation of kiln cars within a tunnel kiln, a drive system is required. In existing technologies, such as the Chinese patent application CN202222805637.0, "Kiln Car Drive Device for Heating Furnace," the method involves a motor reducer driving a blunt gear to move the rack and pinion on the kiln car. While this solution enables controllable operation of the kiln car within the tunnel kiln, the kiln car is generally heavy and has significant inertia. Furthermore, the blunt gear, rack and pinion, and rollers are tightly meshed with no room for movement. Therefore, during braking, the kiln car may continue to move the rack and pinion due to inertia, causing the blunt gear to reverse and drive the motor reducer to rotate, potentially damaging the motor reducer. Therefore, technical modifications to the drive system, the kiln car, and the tunnel kiln are necessary. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a driving device, a kiln car and a tunnel kiln.

[0005] To solve the above-mentioned technical problems, this utility model discloses a driving device, including a plurality of sets of sprockets spaced apart along the running direction, a chain that meshes with the sprockets, and a plurality of driving components fixed at intervals on the chain; it also includes a stop block fixed on the kiln car and cooperating with the driving components to drive the kiln car to run.

[0006] The drive unit and the stop block can be located on the same horizontal straight line, and the drive unit can push the stop block to move along the running direction as it moves with the chain.

[0007] As a further improvement to the above technical solution:

[0008] The drive unit includes a connecting block fixed to the chain, and a bent arm for pushing the stop is hinged to the connecting block. The bent arm is bent forward in the running direction and its movable end is supported by a spring. One end of the spring is hinged to the connecting block and the other end is hinged to the bent arm.

[0009] The drive unit also includes a stop block disposed on the connecting block for preventing the boom from overturning backward in the running direction.

[0010] The stop block has a fitting groove on its rear side facing the running direction to fit the movable end of the curved arm.

[0011] The stop block forms an arc-shaped chamfer on the front side facing the direction of travel.

[0012] The driving components and the stops are equidistantly distributed, and the distance between adjacent driving components is the same as the distance between adjacent stops.

[0013] A kiln car is also disclosed, which is driven by the aforementioned drive device; the bottom of the kiln car is provided with stops at intervals along the running direction.

[0014] As a further improvement to the above technical solution:

[0015] The kiln car is equipped with a "∏"-shaped sealing knife at one end along the running direction and a matching "∏"-shaped sealing groove at the other end; the sealing knife includes a pair of sand sealing knives arranged vertically and arranged on both sides of the kiln car to obstruct the lateral flow of gas, and a horizontal sealing knife arranged horizontally and connecting the two sand sealing knives to obstruct the vertical flow of gas. The horizontal sealing knife spans the connecting gap between the front and rear kiln workshops.

[0016] A raised strip is provided at one end of the kiln car along the running direction, and a groove is provided at the other end to match it. The raised strip spans the connecting gap between the two kiln workshops to prevent vertical gas flow.

[0017] A tunnel kiln is also disclosed, comprising a kiln body and the aforementioned kiln car, as well as the aforementioned drive device; the bottom of the kiln body is formed with a pit for accommodating sprockets and chains, and a drive component located on the upper chain protrudes from the pit.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] The sprocket is connected to an external motor. Driven by the motor, the sprocket rotates, and the chain meshing with it rotates synchronously. Since a drive component is mounted on the chain, and a stop is mounted on the kiln car, when the drive component moves to a point where it abuts the stop, its continued movement pushes the stop to follow. Because the stop is fixed to the kiln car, the kiln car is thus driven to move. During braking, the external motor stops rotating, and the sprocket, chain, and drive component come to a stop. At this time, the kiln car continues to move a distance due to inertia. This distance is less than the distance between two adjacent drive components. Therefore, the stop will disengage from the drive component it abuts as it moves with the kiln car, but it will not engage with the next drive component before coming to a stop. Thus, the kiln car, moving due to inertia, will not drive the external motor in the opposite direction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the interaction between the drive unit and the kiln car;

[0021] Figure 2 This is a status indicator of the drive unit. Figure 1 ;

[0022] Figure 3 This is a status indicator of the drive unit. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the kiln car structure. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the kiln car structure. Figure 2 ;

[0025] Figure 6 This is a schematic diagram of the tunnel kiln structure (the chain section is omitted).

[0026] The labels in the diagram represent: 1. Drive unit; 11. Sprocket; 12. Chain; 13. Drive component; 131. Connecting block; 132. Bent arm; 133. Spring; 134. Stop block; 14. Stop block; 141. Fitting groove; 142. Chamfer; 2. Kiln car; 21. Sealing knife; 211. Sand sealing knife; 212. Horizontal sealing knife; 22. Sealing groove; 23. Raised strip; 24. Groove; 3. Tunnel kiln; 31. Kiln body; 32. Pit. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example

[0029] like Figures 1 to 6 As shown, the drive device 1 of this embodiment includes a plurality of sprockets 11 spaced apart along the running direction, a chain 12 meshing with the sprockets 11, and a plurality of drive members 13 fixed at intervals on the chain 12; it also includes a stop block 14 fixed on the kiln car 2 and cooperating with the drive members 13 to drive the kiln car 2 to run; the drive members 13 and the stop block 14 can be located on the same horizontal straight line, and the drive members 13 can push the stop block 14 to move along the running direction as they move with the chain 12.

[0030] The sprocket 11 is connected to an external motor. Driven by the motor, the sprocket 11 rotates, and synchronously, the chain 12 meshing with the sprocket 11 rotates as well. Since a drive component 13 is mounted on the chain 12, and a stop block 14 is mounted on the kiln car 2, when the drive component 13 moves to abut against the stop block 14, its continued movement will push the stop block 14 to move accordingly. Because the stop block 14 is fixed to the kiln car 2, the kiln car 2 is thus driven to move. During braking, the external motor stops rotating, and correspondingly, the sprocket 11, chain 12, and drive component 13 come to a stop. At this time, the kiln car 2 continues to move a distance due to inertia. This distance is less than the distance between two adjacent drive components 13. Therefore, the stop block 14 will disengage from the drive component 13 it abuts while moving with the kiln car 2, but it will not engage with the next drive component 13 before coming to a stop. Therefore, the kiln car 2, moving due to inertia, will not drive the external motor in the opposite direction.

[0031] In this embodiment, the drive component 13 includes a connecting block 131 fixed to the chain 12. A bent arm 132 for pushing the stop block 14 is hinged to the connecting block 131. The bent arm 132 is bent forward in the running direction, and its movable end is supported by a spring 133. One end of the spring 133 is hinged to the connecting block 131, and the other end is hinged to the bent arm 132. The stop block 14 has a fitting groove 141 adapted to the movable end of the bent arm 132 on the rearward side in the running direction. The stop block 14 has an arc-shaped chamfer 142 on the front side in the running direction. Generally, the cooperation between the bent arm 132 and the stop block 14 is as follows: Figure 2 As shown, the curved arm 132 pushes the stop block 14 forward from the rear. And when the stop block 14... Figure 3 When the bent arm 132 is pushed forward as shown, the spring 133 can be compressed, causing the bent arm 132 to rotate clockwise, thereby avoiding the passive drive of the external motor caused by the push.

[0032] In this embodiment, the drive component 13 further includes a stop block 134 disposed on the connecting block 131 to limit the bending arm 132 from flipping backward in the running direction. By setting the stop block 134, it is possible to prevent the bending arm 132 from flipping backward in the running direction (counterclockwise flipping) after exceeding the tension limit of the spring 133, thereby preventing it from effectively pushing the stop block 14.

[0033] In this embodiment, the driving members 13 and the stop blocks 14 are equidistantly distributed, and the distance between adjacent driving members 13 is the same as the distance between adjacent stop blocks 14. By setting equidistant driving members 13 and stop blocks 14 with equal spacing, several driving members 13 and stop blocks 14 can be simultaneously engaged in each driving action, thereby making the force distribution more uniform.

[0034] In this embodiment, the kiln car 2 is driven by the aforementioned drive device 1. Blocks 14 are spaced apart at the bottom of the kiln car 2 along the running direction. One end of the kiln car 2 along the running direction is provided with a "∏"-shaped sealing knife 21, and the other end is provided with a matching "∏"-shaped sealing groove 22. The sealing knife 21 includes a pair of sand sealing knives 211 arranged vertically on both sides of the kiln car 2 to obstruct the lateral flow of gas, and a transverse sealing knife 212 arranged horizontally and connecting the two sand sealing knives 211 to obstruct the vertical flow of gas. The transverse sealing knife 212 spans the connecting gap between the two kiln cars 2. A protruding strip 23 is provided at one end of the kiln car 2 along the running direction, and a matching groove 24 is provided at the other end. The protruding strip 23 spans the connecting gap between the two kiln cars 2 to obstruct the vertical flow of gas. To ensure the sealing performance of the connection between multiple kiln cars 2, mutually cooperating protrusions 23 and grooves 24 are respectively provided at both ends of the kiln car 2. By inserting the protrusions 23 and grooves 24 of the two kiln cars 2, a sealed connection between the kiln cars 2 is achieved. At this time, gas flow between the upper and lower sides of the kiln car 2 is difficult, thus reducing the heat loss from the upper part of the kiln car 2 to a certain extent. To further enhance the sealing effect, sealing knives 21 and sealing grooves 22 are provided below the protrusions 23 and grooves 24. The sealing knives 21 are designed as embedded head structures that are narrow at the front and wide at the back for easy sealing connection. By inserting this embedded head structure into the sealing groove 22, a sealed connection can be achieved. At the same time, by providing a sand sealing knife 211, its lower end can be inserted into the external sand sealing groove, thereby achieving sand sealing. Through the above structure, gas leakage from the bottom of the kiln car 2 can be effectively prevented, thus ensuring the effect of the sintering process and product quality, and also improving the production efficiency and practicality of the kiln.

[0035] The tunnel kiln 3 of this embodiment includes a kiln body 31, the kiln car 2 described above, and the drive device 1 described above. A pit 32 for accommodating the sprocket 11 and chain 12 is formed at the bottom of the kiln body 31, and a drive member 13 located on the upper chain 12 protrudes from the pit 32. By providing the pit 32, space is provided for the installation of the sprocket 11 and chain 12. At the same time, because the drive member 13 located on the upper chain 12 protrudes from the pit 32, it does not affect its cooperation with the stop block 14.

[0036] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A driving device (1), characterized in that: It includes several sets of sprockets (11) spaced apart along the running direction, with chains (12) meshing with them on the sprockets (11), and several drive components (13) fixed at intervals on the chains (12); it also includes a stop block (14) fixed on the kiln car (2) and cooperating with the drive components (13) to drive the kiln car (2) to run. The drive unit (13) and the stop block (14) can be located on the same horizontal straight line, and the drive unit (13) can push the stop block (14) to move along the running direction as it moves with the chain (12).

2. The driving device (1) according to claim 1, characterized in that: The drive unit (13) includes a connecting block (131) fixed on the chain (12), and a bent arm (132) for pushing the stop (14) is hinged on the connecting block (131). The bent arm (132) is bent forward in the running direction and its movable end is supported by a spring (133). One end of the spring (133) is hinged to the connecting block (131) and the other end is hinged to the bent arm (132).

3. The driving device (1) according to claim 2, characterized in that: The drive unit (13) also includes a stop block (134) disposed on the connecting block (131) for preventing the bent arm (132) from overturning in the direction of operation.

4. The driving device (1) according to claim 1, characterized in that: The stop (14) has a fitting groove (141) on the rear side facing the running direction to match the movable end of the curved arm (132).

5. The driving device (1) according to claim 1, characterized in that: The stop (14) forms an arc-shaped chamfer (142) facing the front of the running direction.

6. The driving device (1) according to claim 1, characterized in that: The driving element (13) and the stop block (14) are equidistantly distributed, and the distance between adjacent driving elements (13) is the same as the distance between adjacent stop blocks (14).

7. A kiln car (2), characterized in that: The kiln car (2) is driven by the drive device (1) according to any one of claims 1-6; the bottom of the kiln car (2) is provided with stops (14) at intervals along the running direction.

8. The kiln car (2) according to claim 7, characterized in that: The kiln car (2) is provided with a "∏" shaped sealing knife (21) at one end along the running direction and a "∏" shaped sealing groove (22) at the other end; the sealing knife (21) includes a pair of sand sealing knives (211) arranged vertically and arranged on both sides of the kiln car (2) to prevent the horizontal flow of gas, and a horizontal sealing knife (212) arranged horizontally and connecting the two sand sealing knives (211) to prevent the vertical flow of gas. The horizontal sealing knife (212) spans the connecting gap between the front and rear kiln cars (2).

9. The kiln car (2) according to claim 8, characterized in that: A protruding strip (23) is provided at one end of the kiln car (2) along the running direction, and a groove (24) is provided at the other end. The protruding strip (23) spans the connecting gap between the front and rear kiln cars (2) to prevent the vertical flow of gas.

10. A tunnel kiln (3), characterized in that: It includes a kiln body (31) and a kiln car (2) according to any one of claims 7-9, and a drive device (1) according to any one of claims 1-6; the bottom of the kiln body (31) is formed with a pit (32) for accommodating a sprocket (11) and a chain (12), and a drive member (13) located on the upper chain (12) protrudes from the pit (32).

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