Kiln car, tunnel kiln and production line

Abstract

According to the kiln car, the tunnel kiln and the production line, a tunnel kiln body is divided into a plurality of temperature zones through partition curtains, the temperature of each temperature zone can be set according to process requirements, and a plurality of kiln cars can enter the kiln body to conduct sintering operation at the same time. The kiln cars are connected in a sealing mode through the first protrusions and the grooves, the sealing performance is enhanced through the sealing cutters 44 and the sealing grooves 45, the side ends of the kiln cars are provided with the second protrusions matched with the side wall of the furnace body in a sealing mode, and therefore sealing connection between the kiln cars and sealing connection between the kiln cars and the furnace body are achieved. The sealing effect of the tunnel kiln is enhanced on the whole through the measures of the sealing door, the partition curtain, the sealing cover and the like; and the circulating industrial line is further arranged, so that the effect of the sintering process and the product quality are guaranteed, and the kiln efficiency, the product and the practicability are also improved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of tunnel kilns, and in particular to a kiln car, a tunnel kiln and a production line. Background Art

[0002] The tunnel kiln is a tunnel-like kiln built with refractory materials, thermal insulation materials and building materials, equipped with kiln cars and other vehicles. It is a modern thermal equipment for continuous firing. The function of the kiln car of the tunnel kiln is to send the materials to be fired into the tunnel kiln, and after preheating and continuous high-temperature sintering, they are transported out of the kiln through the cooling section.

[0003] With the progress of technological research and development and the demand for new energy materials, there are higher requirements for the quantity and quality of tunnel kiln manufacturing products. In the past, the method of "one furnace and one car" for sintering in different temperature zones in turn has gradually failed to meet the current demand for tunnel kiln efficiency. Therefore, the use of "one furnace and multiple cars" for simultaneous sintering operations has begun to appear. In the process of tunnel kiln manufacturing products, one of the important factors affecting product quality is the atmosphere in the furnace. Therefore, in order to improve product quality, it is necessary to avoid uneven atmosphere and gas leakage. In the prior art, since the sand sealing kilns between the front and rear kiln cars cannot be tightly connected and there is a gap for gas to pass through, the sealing effect between the kiln cars is poor, and the gas can leak from between the kiln cars, affecting the product quality; the existing tunnel kiln lacks sealing between the functional areas, so the gas between the functional areas will affect each other, which will also affect the production quality; and in the tunnel kiln production line, there is also a lack of sealing protection, so there is also a certain impact on product quality.

[0004] Therefore, in the whole tunnel kiln product production process, there is a problem of poor sealing, which leads to a decrease in product quality. Therefore, a kiln car, tunnel kiln and production line with better sealing performance are needed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a kiln car, a tunnel kiln and a production line.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A kiln car comprises a "∏"-shaped sealing knife of an embedded structure arranged at one end along the moving direction of the kiln car, and a "∏"-shaped sealing groove adapted to the sealing knife arranged at the other end along the moving direction of the kiln car, the two being plugged and sealed; the sealing knife comprises a pair of sand sealing knives arranged vertically and arranged on both sides of the kiln car for blocking the horizontal flow of gas, and a horizontal sealing knife arranged horizontally and connecting the two sand sealing knives for blocking the vertical flow of gas, and the horizontal sealing knife spans the connecting gap between the front and rear kiln workshops.

[0007] As a further improvement of the above technical solution: A protrusion is formed at one end along the movement direction of the kiln car, and a groove matched with the protrusion is formed at the other end. The protrusion spans the connecting gap between the front and rear kiln workshops to hinder the vertical flow of gas. The adjacent kiln cars are connected to the groove through the protrusion.

[0008] A tunnel kiln suitable for the kiln car comprises a furnace body which is divided into several temperature zones by partition curtains, displacement chambers arranged at both ends of the furnace body and sealed doors installed at both ends of the displacement chambers; protrusions for cooperating and sealing with the side walls of the furnace body are also formed on both sides of the kiln car.

[0009] As a further improvement of the above technical solution: A sealing brush for preventing vertical flow of gas is arranged between the side wall of the furnace body and the kiln car.

[0010] The tunnel kiln also includes a sintering track installed on the furnace body and the bottom surface of the displacement chamber, and a driving device for driving the kiln car to move, and the sintering track and the driving device are half-enclosed in a U-shaped cover, and the upper edge of the U-shaped cover is connected to the sand sealing groove.

[0011] A production line comprises the kiln car and the tunnel kiln; and also comprises a material changing track, wherein the material changing track and the tunnel kiln are connected in series via a transverse track to form a circulating production line, and the circulating production line is provided with mutually connected sealing covers.

[0012] As a further improvement of the above technical solution: A cooler for cooling the sintered material is installed at the inlet end of the material changing track.

[0013] A material changing mechanism is also installed on the material changing track, and the material changing mechanism includes a robot arm 1 for unloading and a robot arm 2 for loading.

[0014] The sealing cover is also sleeved on the replacement chamber, the cooler and the material changing mechanism.

[0015] The furnace body and the matching replacement chamber, sintering track and sealing door are arranged as a process group, and the production line is provided with several process groups.

[0016] Compared with the prior art, the advantages of the present invention are: This device divides the furnace into several temperature zones through curtains. The temperature of each temperature zone can be set according to the process requirements, and multiple kiln cars can enter the furnace to perform sintering operations at the same time. And through the sealing measures such as sealing doors, curtains and kiln cars, the sealing effect of the tunnel kiln is strengthened as a whole, thereby ensuring the effect of the sintering process and product quality, and also improving the kiln efficiency and product and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a sealed tunnel kiln; Figure 2 It is a partial structural diagram of a sealed tunnel kiln; Figure 3 This is a schematic diagram of the structure of the rear end of the kiln car; Figure 4 It is a schematic diagram of the structure of the front end of the kiln car; Figure 5 It is a schematic diagram of the connection structure of the kiln car; Figure 6 It is a schematic diagram of the process group structure of the sealed tunnel kiln.

[0018] The numbers in the figure represent: 1. furnace body; 11. partition curtain; 12. sand sealing groove; 2. replacement chamber; 3. sintering track; 31. transverse track; 32. material changing track; 321. cooler; 4. kiln car; 41. protrusion one; 42. groove; 43. protrusion two; 44. sealing knife; 441. sand sealing knife; 442. transverse sealing knife; 45. sealing groove; 451. sealing groove one; 452. sealing groove two; 47. sealing brush; 5. sealing door; 6. driving device; 7. sealing cover; 8. material changing mechanism; 81. manipulator one; 82. manipulator two; 9. U-shaped cover. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example like Figures 1 to 6As shown, the kiln car of this embodiment includes a "∏"-shaped sealing knife 44 of an embedded structure arranged at one end along the moving direction of the kiln car 4, and a "∏"-shaped sealing groove 45 adapted to the sealing knife 44 arranged at the other end along the moving direction of the kiln car 4, and the two are plugged and sealed; the sealing knife 44 includes a pair of sand sealing knives 441 arranged vertically and arranged on both sides of the kiln car for blocking the horizontal flow of gas, and a horizontal sealing knife 442 arranged horizontally and connecting the two sand sealing knives 441 for blocking the vertical flow of gas, and the horizontal sealing knife 442 spans the connection gap between the front and rear kiln cars 4. A protrusion 41 is also formed at one end along the moving direction of the kiln car 4, and a groove 42 adapted to the protrusion 41 is formed at the other end. The protrusion 41 spans the connection gap between the front and rear kiln cars 4 to block the vertical flow of gas, and the adjacent kiln cars 4 are connected to the groove 42 through the protrusion 41. In order to ensure the sealing performance and practicality of the connection between multiple kiln cars 4, the two ends of the kiln car 4 are respectively provided with a protrusion 41 and a groove 42 that cooperate with each other. The protrusion 41 and the groove 42 of the front and rear kiln cars 4 are connected with each other to achieve a sealed connection between the kiln cars 4. In addition, in order to ensure the sealing effect, a sealing knife 44 and a sealing groove 45 are provided below the protrusion 41 and the groove 42. The structure of the sealing knife 44 is set as an embedded head structure that is narrow in front and wide in the back for sealing connection. The embedded head structure is inserted into the sealing groove 45 to complete the sealing connection. The sealing knife 44 and the sealing groove 45 respectively include a sand sealing knife 441 and a sealing groove 1 451 for realizing vertical sealing, and the sand sealing knife 441 extends and inserts into the sand sealing groove 12, thereby ensuring the sealing effect in the vertical direction; and also include a horizontal sealing knife 442 and a sealing groove 2 452. The horizontal sealing knife 442 is connected with the sand sealing knives 441 at both ends to form a "∏"-shaped seal to ensure the integrity of the seal. In addition, sealing strips and other sealing parts are arranged in the groove 42, the sealing groove 451 and the sealing groove 452 to enhance the sealing effect. The sealing strip is located below the sealing groove 452 to ensure a large compression amount and a small compression force requirement, thereby realizing multi-stage sealing. In addition, the embedded head structure faces the running direction of the kiln car 4, which can cut the sand in the sand sealing groove 12; the sealing groove 45 of the groove structure faces away from the running direction of the kiln car 4, which can prevent sand from entering the sealing groove 45, thereby providing space for the sand sealing knife 441; and the sealing strip adopts a top bubble structure, and the sand that does not have time to escape can also be squeezed inside, which will not affect the sealing compression amount. Through the above structure, it can effectively prevent gas from leaking from the bottom of the kiln car 4, thereby ensuring the effect of the sintering process and the product quality, and also improving the production efficiency and practicality of the kiln.

[0021] The tunnel kiln of the present embodiment applicable to the kiln car of claim 1 / 2 comprises a furnace body 1 which is divided into several temperature zones by a partition curtain 11, a displacement chamber 2 arranged at both ends of the furnace body 1 and a sealing door 5 installed at both ends of the displacement chamber 2; both side ends of the kiln car 4 are also formed with protrusions 43 for cooperating with the side wall of the furnace body 1 for sealing. In order to improve the sealing performance of the tunnel kiln and maintain the consistency of the overall atmosphere, the present application is provided with a displacement chamber 2 at the inlet and outlet ends of the furnace body 1, and a sealing door 5 with good sealing performance is installed at the inlet and outlet ends of the displacement chamber 2, so as to ensure that the atmospheres in the furnace body 1 and the displacement chamber 2 do not affect each other. Before the kiln car 4 needs to enter the furnace body 1 and after it comes out of the furnace body 1, the gas displacement of the inlet and outlet materials on the kiln car 4 is completed through the displacement chamber 2, and the gas concentration in the furnace is ensured to remain unchanged, thereby ensuring the sintering effect. The furnace body 1 is divided into several temperature zones by the partition curtain 11. The temperature of each temperature zone can be set according to the process requirements, and the length of the kiln car 4 is consistent with the length of each temperature zone, so that multiple kiln cars 4 can enter the furnace body 1 and perform sintering operations at the same time to increase the number and efficiency of sintered products. In order to strengthen the sealing between the kiln car 4 and the furnace body 1, the side end of the kiln car 4 is provided with a protrusion 43 that seals with the side wall of the furnace body 1, and by connecting the kiln cars 4, the space above and below the sealed kiln car 4 is isolated to prevent high-temperature gas from escaping from the lower end of the kiln car 4. Therefore, compared with the prior art, the present application can better prevent the atmosphere in the furnace body 1 from interfering with each other, and enhance the overall sealing, thereby improving production efficiency and product quality.

[0022] In this embodiment, a sealing brush 47 for blocking the vertical flow of gas is provided between the side wall of the furnace body 1 and the kiln car 4. Since there are certain gaps between the sand used for sand sealing, it is impossible to achieve complete sealing. In order to enhance the sealing effect, in addition to the sand seal provided at the bottom of the kiln car 4, a sealing brush 47 is installed between the protrusion 43 and the sand seal groove 12, thereby achieving two-way sealing, blocking the gap between the sand seal groove 12 and the kiln car 4, increasing the sealing pressure, and preventing the high-temperature gas in the furnace body 1 from leaking from the bottom of the kiln car 4; in this application, the sealing brush 47 is fixedly connected to the side end of the kiln car 4 in the form of upper and lower pressure plates, and its contact surface with the side wall of the furnace body 1 is set as a wear-resistant smooth surface, which not only facilitates the replacement of the sealing brush 47, but also ensures that the sealing brush 47 can achieve a better sealing effect.

[0023] In this embodiment, the tunnel kiln further comprises a sintering track 3 installed on the bottom surface of the furnace body 1 and the displacement chamber 2, and a driving device 6 for driving the kiln car 4 to move, and the sintering track 3 and the driving device 6 are half-enclosed in a U-shaped cover 9, and the upper edge of the U-shaped cover 9 is connected to the sand sealing groove 12. The kiln car 4 itself has no power, but is placed on the sintering track 3 and driven by the driving device 6. In this embodiment, a kiln car 4 is provided with four rows of wheels, and the driving device 6 is composed of a double-row chain with an attached plate, a coupling, a driver and a reduction motor. In order to prevent gas leakage from the connection part between the driving device 6 and the kiln car 4, a U-shaped cover 9 is arranged on the periphery of the sintering track 3 and the driving device 6, and the upper edge of the U-shaped cover 9 is connected to the sand sealing groove 12, so that the bottom of the tunnel kiln forms a completely closed part through the U-shaped cover 9, the "∏"-shaped seal and the sand sealing groove 12, and a sealing seat is also provided at the connection part between the U-shaped cover 9 and the driving device 6, thereby achieving complete sealing between the bottom of the kiln car 4 and the driving device 6, and improving the sealing effect.

[0024] The production line of this embodiment includes the kiln car of claim 1 / 2, and the tunnel kiln of any one of claims 3-5; it also includes a material change track 32, which is connected in series with the tunnel kiln via a transverse track 31 to form a circulating production line, and the circulating production line is provided with a sealing cover 7 that is connected to each other. After the kiln car 4 comes out of the replacement chamber 2, it directly enters the transverse track 31 at the outlet end of the kiln furnace, and the kiln car 4 is driven by the transverse track 31 to enter the material change track 32. After completing the loading and unloading operations on the material change track 32, it enters the transverse track 31 at the inlet end and prepares to enter the furnace body 1 again, thereby realizing automatic circulation sintering. In this circulation line, the transverse track 31, the sintering track 3 and the material change track 32 are connected to each other to realize automatic drive, thereby improving the working efficiency of the kiln furnace.

[0025] In this embodiment, a cooler 321 for cooling the sintered material is installed at the inlet end of the material exchange track 32. A material exchange mechanism 8 is also installed on the material exchange track 32. The material exchange mechanism 8 is sequentially installed with a manipulator 1 81 for unloading and a manipulator 2 82 for loading along the running direction of the material exchange track 32. In order to improve the working efficiency of the kiln, when the kiln car 4 comes out of the furnace body 1 and enters the material exchange track 32, the sintered material will be cooled by the cooler 321, so as to facilitate the subsequent loading and unloading operations of the material exchange mechanism 8; and the material exchange mechanism 8 is also provided with a separate material removal conveyor line and a material feeding conveyor line, so that the loading and unloading operations are separated and performed independently, ensuring the working efficiency of the loading and unloading operations, and also improving the degree of automation of the industrial line. Since the various parts do not affect each other, the production quality and production quantity are improved, and the energy consumption and production costs are reduced.

[0026] In this embodiment, the sealing cover 7 is also mounted on the displacement chamber 2, the cooler 321 and the material exchange mechanism 8. The sealing cover 7 and the tunnel kiln, which is in a sealed state, are used to seal the entire circulation industrial line, and the interior is interconnected. The kiln car 4 and the furnace body 1 are subjected to the accumulation of gas displacement process through the displacement chamber 2. After a period of time, the entire circulation industrial line will be in a constant atmosphere, and because there is no gas leakage or the gas leakage is small, the gas consumption for forming the constant atmosphere is small, and the gas consumption after forming the constant atmosphere will also be less. The entire process is carried out in a sealed environment with a constant atmosphere, providing a stable processing environment, ensuring the quality of processing and reducing energy and economic losses.

[0027] In this embodiment, the furnace body 1 and the matching replacement chamber 2, sintering track 3 and sealing door 5 are set as a process group, and a plurality of process groups are set on the production line. Each process group is a separate and complete process, so each process group operates independently of each other, and can form automated coordination according to process needs, thereby improving industrial efficiency and expanding business scope.

[0028] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A kiln car, characterized in that: The invention comprises a "∏"-shaped sealing knife (44) of an embedded structure arranged along one end of a kiln car (4) in the direction of movement, and a "∏"-shaped sealing groove (45) arranged along the other end of the kiln car (4) in the direction of movement and adapted to the sealing knife (44), the two being plugged and sealed; the sealing knife (44) comprises a pair of sand sealing knives (441) arranged vertically and arranged on both sides of the kiln car for blocking the horizontal flow of gas, and a horizontal sealing knife (442) arranged horizontally and connecting the two sand sealing knives (441) for blocking the vertical flow of gas, and the horizontal sealing knife (442) spans the connection gap between the front and rear kiln cars (4).

2. The kiln car according to claim 1, characterized in that: A protrusion (41) is formed at one end along the movement direction of the kiln car (4), and a groove (42) adapted to the protrusion (41) is formed at the other end. The protrusion (41) spans the connection gap between the front and rear kiln cars (4) to block the vertical flow of gas. Adjacent kiln cars (4) are connected to the groove (42) via the protrusion (41).

3. A tunnel kiln suitable for the kiln car according to claim 1 / 2, characterized in that: The invention comprises a furnace body (1) whose interior is divided into a plurality of temperature zones by a partition curtain (11), a displacement chamber (2) arranged at both ends of the furnace body (1), and a sealing door (5) installed at both ends of the displacement chamber (2); two side ends of the kiln car (4) are also formed with protrusions (43) for cooperating with the side wall of the furnace body (1) for sealing.

4. The tunnel kiln according to claim 3, characterized in that: A sealing brush (47) is provided between the side wall of the furnace body (1) and the kiln car (4) for preventing vertical flow of gas.

5. The tunnel kiln according to claim 3, characterized in that: The tunnel kiln further comprises a sintering track (3) mounted on the bottom surface of the furnace body (1) and the displacement chamber (2), and a driving device (6) for driving a kiln car (4) to move, and the sintering track (3) and the driving device (6) are half-enclosed in a U-shaped cover (9), and the upper edge of the U-shaped cover (9) is connected to a sand sealing groove (12).

6. A production line, characterized in that: It comprises the kiln car as described in claim 1 / 2, and the tunnel kiln as described in any one of claims 3-5; it also comprises a material changing track (32), the material changing track (32) and the tunnel kiln are connected in series via a transverse track (31) to form a circulating production line, and the circulating production line is provided with mutually connected sealing covers (7).

7. The production line according to claim 6, characterized in that: A cooler (321) for cooling the sintered material is installed at the inlet end of the material exchange track (32).

8. The production line according to claim 7, characterized in that: A material changing mechanism (8) is also installed on the material changing track (32), and the material changing mechanism (8) comprises a first manipulator (81) for unloading and a second manipulator (82) for loading.

9. The production line according to claim 8, characterized in that: The sealing cover (7) is also sleeved on the replacement chamber (2), the cooler (321) and the material changing mechanism (8).

10. The production line according to claim 6, characterized in that: The furnace body (1) and the matching replacement chamber (2), sintering track (3) and sealing door (5) are arranged as a process group, and a plurality of process groups are arranged on the production line.

Images