Molecular sieve calcination furnace

Abstract

This application discloses a molecular sieve calcination furnace, relating to the field of calcination furnaces. The furnace includes a furnace body with a furnace door hinged to one side. An exhaust pipe and an inlet pipe are respectively fixed through the middle of both ends of the furnace body's outer wall. A feed pipe is fixed through the top of the furnace body. A servo motor is fixed to the top of the furnace body's outer wall, and a drive gear is fixed to the power output end of the servo motor. This device adjusts the position of the baffle according to the required size of the finished molecular sieve. By rotating the baffle at the bottom of the permeable mesh, the common gap between the first and second material leakage holes is adjusted. The servo motor is then activated, causing the first and second driven shafts to rotate in opposite directions. This drives each set of crushing rods to crush molecular sieves of different sizes at the top of each partition. The crushed molecular sieves then move downwards, thereby achieving the effect of crushing large-volume molecular sieves, improving calcination efficiency, and controlling the size of the molecular sieves after calcination.

Description

Technical Field

[0001] This application relates to the field of calcining furnaces, and in particular to molecular sieve calcining furnaces. Background Technology

[0002] Currently, molecular sieves are artificially synthesized hydrated aluminosilicates (zeolites) or natural zeolites that have the function of screening molecules. Structurally, they have numerous uniformly sized channels and neatly arranged pores. Molecular sieves with different pore sizes separate molecules of different sizes and shapes, resulting in high adsorption capacity, strong selectivity, and high temperature resistance. They are widely used in organic and petrochemical industries and are also excellent adsorbents for coal gas dehydration. Their application in waste gas purification is also receiving increasing attention. Molecular sieves typically require calcination in a calcination furnace during manufacturing, which significantly reduces sintering temperature and energy consumption.

[0003] In existing calcination furnaces, a large number of molecular sieves are usually poured into the furnace for calcination. However, when a large number of molecular sieves are piled up together, it is easy for the molecular sieves in the middle to have difficulty contacting the external high-temperature gas, resulting in uneven calcination. At the same time, the molecular sieves have different volumes, and the larger the volume of the molecular sieve, the longer the calcination time is required. Therefore, it is necessary to calcine according to the calcination time of the largest volume molecular sieve. Utility Model Content

[0004] To address the problem that when molecular sieves are piled up, the molecular sieves in the middle position may have difficulty contacting the external high-temperature gas, resulting in uneven calcination, and the need to calcinate for the largest volume of molecular sieves, this application provides a molecular sieve calcination furnace.

[0005] The molecular sieve calcination furnace provided in this application adopts the following technical solution: it includes a furnace body, a furnace door hinged to one side of the furnace body, an exhaust pipe and an air inlet pipe respectively fixed through the middle of both ends of the outer wall of the furnace body, a feed pipe fixed through the top of the furnace body, a servo motor fixed to the top of the outer wall of the furnace body, a drive gear fixed to the power output end of the servo motor, a first pulley fixed to the top of the drive gear, a second driven shaft rotatably connected through the middle of the top of the furnace body, a first driven shaft rotatably connected to the bottom of the inner wall of the furnace body, the first driven shaft movably passing through the middle of the second driven shaft, a second pulley fixed to the top of the first driven shaft, a driven gear fixed to the top of the second driven shaft, a crushing rod fixed to the middle of the outer wall of the second driven shaft, a permeable mesh fixed below the middle of the outer wall of the first driven shaft, a partition fixed to the inner wall of the permeable mesh, and a crushing rod fixed to the outer wall of the second driven shaft.

[0006] By adopting the above technical solution, high-temperature gas from the outside is introduced through the gas inlet pipe during roasting, roasted inside the furnace body, and then discharged through the exhaust pipe. The driven gear drives the driven gear to rotate, which in turn drives the second driven shaft to rotate. The first pulley drives the second pulley to rotate, which in turn drives the first driven shaft to rotate. The crushing rod rotates above the partition to crush the large-volume molecular sieve.

[0007] Preferably, the driving gear and the driven gear mesh with each other, and a transmission belt is fixed to the outer wall of the first pulley and the second pulley.

[0008] By adopting the above technical solution, the servo motor rotates to drive the drive gear and the first pulley to rotate, which in turn drives the driven gear to rotate, and the transmission belt drives the second pulley to rotate, so that the first driven shaft and the second driven shaft rotate in opposite directions.

[0009] Preferably, the bottom of the breathable mesh has a first leakage hole, and there are multiple first leakage holes arranged in an equidistant pattern.

[0010] By adopting the above technical solution, the first material discharge hole can discharge the molecular sieve after it has been crushed at the top.

[0011] Preferably, a baffle is rotatably connected to the bottom of the outer wall of the breathable mesh, and a second material leakage hole is provided through the top of the baffle. Multiple second material leakage holes are provided, and multiple second material leakage holes are provided in a one-to-one correspondence with multiple first material leakage holes. A connecting block is fixed to the top of the outer wall of the baffle, and a limit bolt is threadedly connected to one side of the connecting block. The limit bolt is in contact with the breathable mesh.

[0012] By adopting the above technical solution, the position of the baffle is adjusted according to the size of the molecular sieve of the finished product. By rotating the baffle at the bottom of the air-permeable mesh, the common gap between the first and second material leakage holes is adjusted. After the adjustment is completed, the limiting bolt is rotated to limit the position of the baffle.

[0013] Preferably, multiple partitions are provided, and each of the multiple partitions has a filter hole through its top. The diameter of the filter hole inside the multiple partitions increases from bottom to top.

[0014] By adopting the above technical solution, multiple partitions use filter holes of different pore sizes to achieve the effect of classifying and placing molecular sieves of different sizes.

[0015] Preferably, the crushing rods are provided in multiple sets, and the multiple sets of crushing rods are located on the top of multiple partitions respectively. Each set of crushing rods is provided with multiple crushing rods, and the number of crushing rods in each set decreases from bottom to top.

[0016] By adopting the above technical solution, the first driven shaft and the second driven shaft rotate in opposite directions, driving each set of crushing rods to crush molecular sieves of different sizes at the top of each partition, and the crushed molecular sieves then move downwards.

[0017] Preferably, an inclined block is fixed at the bottom of the inner wall of the furnace, and the height of the inclined block at one end near the furnace door is less than the height at the other end.

[0018] By adopting the above technical solution, the crushed molecular sieve falls to the bottom of the inclined block. After calcination, the furnace door is opened and a collection device is placed below the furnace door. The molecular sieve rolls from the inclined block into the collection device.

[0019] In summary, this application includes at least the following beneficial technical effects:

[0020] 1. This application adjusts the position of the baffle according to the size of the molecular sieve of the finished product. By rotating the baffle at the bottom of the air-permeable mesh, the common gap of the first and second material leakage holes is adjusted. The servo motor is started, so that the first and second driven shafts rotate in opposite directions, driving each set of crushing rods to crush molecular sieves of different sizes at the top of each partition. The crushed molecular sieves then move downwards, thereby achieving the effect of crushing large-volume molecular sieves, improving calcination efficiency, and controlling the size of the molecular sieves after calcination.

[0021] 2. This application uses a servo motor to drive the drive gear and the first pulley to rotate, which in turn drives the driven gear to rotate. The drive belt drives the second pulley to rotate, causing the first driven shaft and the second driven shaft to rotate in opposite directions. Multiple partitions use filter holes of different sizes to achieve the effect of classifying and placing molecular sieves of different sizes. While being crushed, the molecular sieves are placed in different layers of partitions inside the permeable mesh, thereby achieving the effect of layered rotational calcination of the molecular sieves and improving the efficiency of contact between the molecular sieves and external hot air. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the molecular sieve calcination furnace according to an embodiment of this application;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of the A-section structure;

[0024] Figure 3 This is a cross-sectional schematic diagram of the overall structure of an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the structure of the breathable mesh in an embodiment of this application;

[0026] Reference numerals in the attached drawings: 1. Furnace body; 2. Exhaust pipe; 3. Inlet pipe; 4. Furnace door; 5. Feed pipe; 6. Servo motor; 7. Drive gear; 8. First pulley; 9. Second pulley; 10. First driven shaft; 11. Transmission belt; 12. Driven gear; 13. Second driven shaft; 14. Ventilation mesh; 141. First material leakage hole; 15. Baffle plate; 151. Filter hole; 16. Crushing rod; 17. Baffle plate; 171. Second material leakage hole; 18. Connecting block; 181. Limiting bolt; 19. Inclined block. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0028] This application discloses a molecular sieve calcination furnace, including a furnace body 1. A furnace door 4 is hinged to one side of the furnace body 1. An exhaust pipe 2 and an inlet pipe 3 are respectively fixed through the middle of both ends of the outer wall of the furnace body 1. During calcination, high-temperature gas from the outside is introduced through the inlet pipe 3, calcined inside the furnace body 1, and then discharged through the exhaust pipe 2. A feed pipe 5 is fixed through the top of the furnace body 1. A servo motor 6 is fixed to the top of the outer wall of the furnace body 1. A drive gear 7 is fixed to the power output end of the servo motor 6. A first pulley 8 is fixed to the top of the drive gear 7. A second driven shaft 13 is rotatably connected through the middle of the top of the furnace body 1. A first driven shaft 10 is rotatably connected to the bottom of the inner wall of the furnace body 1. The first driven shaft 10 movably passes through the second driven shaft 5. In the middle of the two driven shafts 13, a second pulley 9 is fixed to the top of the first driven shaft 10, and a driven gear 12 is fixed to the top of the second driven shaft 13. The driven gear 12 is driven to rotate by the driving gear 7, which in turn drives the second driven shaft 13 to rotate. The second pulley 9 is driven to rotate by the first pulley 8, which in turn drives the first driven shaft 10 to rotate. A crushing rod 16 is fixed to the middle of the outer wall of the second driven shaft 13. A breathable mesh 14 is fixed to the lower middle of the outer wall of the first driven shaft 10. A partition 15 is fixed to the inner wall of the breathable mesh 14. The crushing rod 16 is fixed to the outer wall of the second driven shaft 13. The crushing rod 16 rotates above the partition 15 to crush the large-volume molecular sieve.

[0029] Reference Appendix Figure 1 and 2 The drive gear 7 and driven gear 12 mesh with each other. The outer walls of the first pulley 8 and the second pulley 9 are fixed with a transmission belt 11. The servo motor 6 rotates to drive the drive gear 7 and the first pulley 8 to rotate, which in turn drives the driven gear 12 to rotate. The transmission belt 11 drives the second pulley 9 to rotate, so that the first driven shaft 10 and the second driven shaft 13 rotate in opposite directions.

[0030] Reference Appendix Figure 3The bottom of the breathable mesh 14 is provided with a first material leakage hole 141. Multiple first material leakage holes 141 are provided and are arranged in a filling and equidistant manner. The first material leakage holes 141 can discharge the molecular sieve after it is crushed at the top.

[0031] Reference Appendix Figure 4 The bottom of the outer wall of the breathable mesh 14 is rotatably connected to a baffle 17. The top of the baffle 17 has a through-hole 171. There are multiple second leakage holes 171, which correspond one-to-one with multiple first leakage holes 141. A connecting block 18 is fixed to the top of the outer wall of the baffle 17. A limit bolt 181 is threadedly connected to one side of the connecting block 18. The limit bolt 181 is in contact with the breathable mesh 14. The position of the baffle 17 can be adjusted according to the size of the molecular sieve of the finished product. By rotating the baffle 17 at the bottom of the breathable mesh 14, the common gap between the first leakage holes 141 and the second leakage holes 171 can be adjusted. After the adjustment is completed, the limit bolt 181 is rotated to limit the position of the baffle 17.

[0032] Reference Appendix Figure 3 The partition 15 is provided in multiple ways, and each partition 15 has a filter hole 151 through it on its top. The diameter of the filter hole 151 inside the partition 15 increases from bottom to top. The partition 15 uses filter holes 151 with different pore sizes to achieve the effect of classifying and placing molecular sieves of different sizes.

[0033] Reference Appendix Figure 3 The device has multiple sets of crushing rods 16, which are located on top of multiple partitions 15. Each set of crushing rods 16 has multiple rods, and the number of crushing rods 16 in each set decreases from bottom to top. The first driven shaft 10 and the second driven shaft 13 rotate in opposite directions, driving each set of crushing rods 16 to crush molecular sieves of different sizes on top of each partition 15. The crushed molecular sieves then move downwards.

[0034] Reference Appendix Figure 3 The bottom of the inner wall of the furnace body 1 is fixed with an inclined block 19. The height of the inclined block 19 near the furnace door 4 is less than the height of the other end, so that the crushed molecular sieve falls to the bottom of the inclined block 19. After the roasting is completed, the furnace door 4 is opened and a collection device is placed below the furnace door 4. The molecular sieve rolls from the inclined block 19 into the collection device.

[0035] The implementation principle of the molecular sieve calcination furnace in this embodiment is as follows: First, the position of the baffle 17 is adjusted according to the required size of the finished molecular sieve. By rotating the baffle 17 at the bottom of the permeable mesh 14, the common gap between the first discharge hole 141 and the second discharge hole 171 is adjusted. After adjustment, the position of the baffle 17 is limited by rotating the limiting bolt 181. Then, the molecular sieve to be calcined is poured into the furnace body 1 through the feed pipe 5. Subsequently, high-temperature gas from the outside is introduced through the air inlet pipe 3, calcined inside the furnace body 1, and then discharged through the exhaust pipe 2. At the same time, the servo motor 6 is started. The rotation of the servo motor 6 drives the drive gear 7 and the first pulley 8 to rotate, which in turn drives the driven gear 12 to rotate, thus driving the transmission. The belt 11 drives the second pulley 9 to rotate, causing the first driven shaft 10 and the second driven shaft 13 to rotate in opposite directions. Multiple partitions 15 use filter holes 151 with different apertures to achieve the effect of classifying and placing molecular sieves of different sizes. The first driven shaft 10 and the second driven shaft 13 rotate in opposite directions, driving each set of crushing rods 16 to crush molecular sieves of different sizes at the top of each partition 15. The crushed molecular sieves then move downwards, and the first leakage hole 141 discharges the crushed molecular sieves from the top. The crushed molecular sieves fall to the bottom of the inclined block 19. After calcination, the furnace door 4 is opened, and a collection device is placed below the furnace door 4. The molecular sieves roll from the inclined block 19 into the collection device.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A molecular sieve calcination furnace, comprising a furnace body (1), wherein a furnace door (4) is hinged to one side of the furnace body (1), an exhaust pipe (2) and an inlet pipe (3) are respectively fixed through the middle of both ends of the outer wall of the furnace body (1), and a feed pipe (5) is fixed through the top of the furnace body (1), characterized in that: A servo motor (6) is fixed to the top of the outer wall of the furnace body (1). A drive gear (7) is fixed to the power output end of the servo motor (6). A first pulley (8) is fixed to the top of the drive gear (7). A second driven shaft (13) is rotatably connected through the middle of the top of the furnace body (1). A first driven shaft (10) is rotatably connected to the bottom of the inner wall of the furnace body (1). The first driven shaft (10) moves through the middle of the second driven shaft (13). A second pulley (9) is fixed to the top of the first driven shaft (10). A driven gear (12) is fixed to the top of the second driven shaft (13). A crushing rod (16) is fixed to the middle of the outer wall of the second driven shaft (13). A ventilated net (14) is fixed below the middle of the outer wall of the first driven shaft (10). A partition (15) is fixed to the inner wall of the ventilated net (14). A crushing rod (16) is fixed to the outer wall of the second driven shaft (13).

2. The molecular sieve calcination furnace according to claim 1, characterized in that: The driving gear (7) and the driven gear (12) mesh with each other, and the outer walls of the first pulley (8) and the second pulley (9) are fixed with a transmission belt (11).

3. The molecular sieve calcination furnace according to claim 1, characterized in that: The bottom of the breathable mesh (14) is provided with a first material leakage hole (141), and multiple first material leakage holes (141) are provided, and the multiple first material leakage holes (141) are arranged in a filling and equidistant manner.

4. The molecular sieve calcination furnace according to claim 3, characterized in that: A baffle (17) is rotatably connected to the bottom of the outer wall of the breathable mesh (14). A second material leakage hole (171) is provided through the top of the baffle (17). Multiple second material leakage holes (171) are provided, and multiple second material leakage holes (171) are provided in a one-to-one correspondence with multiple first material leakage holes (141). A connecting block (18) is fixed to the top of the outer wall of the baffle (17). A limit bolt (181) is threadedly connected to one side of the connecting block (18), and the limit bolt (181) is in contact with the breathable mesh (14).

5. The molecular sieve calcination furnace according to claim 1, characterized in that: Multiple partitions (15) are provided, and filter holes (151) are opened through the top of each partition (15). The diameter of the filter holes (151) inside the multiple partitions (15) increases from bottom to top.

6. The molecular sieve calcination furnace according to claim 5, characterized in that: The crushing rod (16) is provided in multiple sets, and the multiple sets of crushing rods (16) are located on the top of multiple partitions (15). Each set of crushing rods (16) is provided in multiple sets, and the number of crushing rods (16) in each set decreases from bottom to top.

7. The molecular sieve calcination furnace according to claim 6, characterized in that: An inclined block (19) is fixed at the bottom of the inner wall of the furnace body (1), and the height of the inclined block (19) at one end near the furnace door (4) is less than the height of the other end.

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