Kiln head and smoke chamber waste heat recycling system of calcining kiln

Abstract

The invention relates to the technical field of waste heat recovery of calcining kilns, and particularly discloses a kiln head and smoke chamber waste heat recycling system of a calcining kiln, comprising: a first heat exchange assembly comprising a first jacket and a first power source, the first jacket is arranged on the outer side of the end part of the kiln head, and the first jacket is provided with a first inlet and a first outlet; the first power source is used for driving the heat transfer medium in the first jacket to flow, so that the heat transfer medium can flow into the first jacket from the first inlet and then flow out from the first outlet; the second heat exchange assembly comprises a second jacket and a second power source, the second jacket is arranged on the outer side of the chamber hopper, a second inlet and a second outlet are formed in the second jacket, and the second power source can enable the heat transfer medium to flow into the second jacket from the second inlet and then flow out from the second outlet. According to the application, the heat diffused to the outside air at the kiln head and the smoke chamber can be reduced, and the waste heat at the kiln head and the smoke chamber is recycled, so that the utilization rate of resources is improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste heat recovery of calcining kilns, and in particular to a waste heat recovery and utilization system for a kiln head and a smoke chamber of a calcining kiln. Background Art

[0002] A rotary kiln is a rotating calcining kiln (commonly known as a rotary kiln). It is a steel cylinder lined with refractory material and is classified as a building materials equipment. Depending on their use, they can be divided into cement rotary kilns, ceramsite sand rotary kilns, kaolin rotary kilns, lime rotary kilns, and others.

[0003] A ceramsite calcining kiln is a type of rotary kiln. Its exhaust gas typically passes through a smoke chamber for ash reduction. This high-temperature flue gas, continuously discharged from the kiln into the smoke chamber, causes high temperatures in the smoke chamber and the kiln connection (i.e., the kiln head) as well as in the smoke chamber. These high temperatures and high heat levels cause significant heat loss to the outside air, raising the production environment and compromising the worker's work experience. Summary of the Invention

[0004] In order to reduce the amount of heat diffused from the kiln head and smoke chamber into the outside air, the present application provides a waste heat recovery and utilization system for the kiln head and smoke chamber of a calcining kiln.

[0005] The present application provides a calcining kiln head and smoke chamber waste heat recovery system that adopts the following technical solutions: A kiln head and smoke chamber waste heat recovery and utilization system for a calcining kiln is provided at the kiln head and smoke chamber, wherein the kiln head is connected to the interior of the smoke chamber, and a chamber hopper for accommodating ash is fixedly connected to the smoke chamber, and the chamber hopper is connected to the interior of the smoke chamber, comprising: a first heat exchange assembly, the first heat exchange assembly comprising a first jacket and a first power source, the first jacket being disposed on the outer side of the kiln head near one end of the smoke chamber, the first jacket being provided with a first inlet and a first outlet, the first power source being used to drive the heat transfer medium in the first jacket to flow, so that the heat transfer medium can flow into the first jacket from the first inlet and then flow out from the first outlet; The second heat exchange component includes a second jacket and a second power source. The second jacket is arranged on the outside of the chamber. The second jacket is provided with a second inlet and a second outlet. The second power source is used to drive the heat transfer medium in the second jacket to flow so that the heat transfer medium can flow into the second jacket from the second inlet and then flow out from the second outlet.

[0006] By adopting the above technical solution, the heat diffused into the outside air from the kiln head and the smoke chamber is effectively reduced, the production environment is improved, and the work experience of production workers is enhanced; when the heat transfer medium is air, the hot air discharged from the first jacket and the second jacket can be used for heating inside the factory and for steaming in production, thereby improving energy utilization.

[0007] Optionally, insulation boards are provided on the outsides of the first jacket and the second jacket.

[0008] By adopting the above technical solution, the heat exchange between the heat transfer medium and the external environment during the heat exchange process can be effectively reduced, which helps to improve the thermal efficiency of the system; at the same time, the insulation board can also reduce the temperature rise of the external environment due to heat absorption, further improving the working environment of production workers.

[0009] Optionally, a partition is provided in the smoke chamber, and a plurality of partitions are provided and arranged in a staggered manner.

[0010] By adopting the above-mentioned technical solution, the setting of the partition can effectively extend the residence time of the flue gas in the smoke chamber, so that the heat in the flue gas can be more fully transferred to the first heat exchange component and the second heat exchange component, thereby improving the waste heat recovery efficiency; since the flue gas stays in the smoke chamber for a longer time, more wood ash powder in the flue gas can fall into the chamber bucket, thereby enhancing the ash reduction effect on the flue gas.

[0011] Optionally, a third heat exchange component is provided in the smoke chamber, and the third heat exchange component includes a third jacket, a water pump, a steam pipe, a steam valve and a steam trap. The third jacket is arranged inside the smoke chamber, and the third jacket cover is arranged on the inner wall of the smoke chamber and the outer side of the partition. The third jacket is provided with a water inlet and a drain outlet, the water pump and the steam pipe are both arranged on the third jacket, and the steam valve and the steam trap are both arranged on the steam pipe.

[0012] By adopting the above technical solution, the heat in the smoke chamber can convert the water in the third jacket into steam, and then the steam is discharged to realize the recovery and utilization of the waste heat of the smoke chamber; the third jacket fits tightly against the inner wall and partition of the smoke chamber, increasing the heat transfer area and improving the efficiency of heat transfer; the steam pipe and steam valve enable the steam in the third jacket to be discharged in time, ensuring the safety of the system; the steam trap ensures that the condensed water can be discharged in time to avoid water accumulation affecting the normal operation of the system.

[0013] Optionally, a baffle is provided at the opening of the chamber bucket, and two baffles are provided and are respectively located on the two opposite side walls inside the chamber bucket. The two baffles are located at different heights of the chamber bucket, and the openings formed between the two baffles and the inner wall of the chamber bucket are staggered.

[0014] By adopting the above technical solution, the baffle can block the smoke in the smoke chamber, thereby reducing the smoke entering the chamber bucket. The baffle can also block the wood ash dust that escapes upward from the chamber bucket, thereby reducing the wood ash dust that escapes from the chamber bucket into the smoke chamber, which helps to enhance the collection effect of dust such as wood ash and the ash reduction effect of the smoke.

[0015] Optionally, the baffle is arranged at an angle, and the opening formed between the baffle and the inner wall of the chamber bucket is located on a side of the baffle close to the bottom of the chamber bucket.

[0016] By adopting the above technical solution, the wood ash dust attached to the baffle can be effectively guided to slide down the baffle, thereby enhancing the collection effect of the ash material.

[0017] Optionally, both baffles are fixedly connected with a connecting rod, the connecting rod is rotatably connected to the chamber bucket, and a driving assembly is provided on the chamber bucket, the driving assembly includes a first motor, a driving gear, a driven gear, a connecting rope and a torsion spring, the driving gear is connected to the output shaft of the first motor, only a part of the teeth on the driving gear is provided, the driven gear is coaxially fixedly connected to one of the connecting rods, the driven gear is used to engage with the driving gear, the connecting rope is fixedly connected between the two connecting rods, so that when one of the connecting rods rotates, the other connecting rod can be driven to rotate, and the torsion spring is connected between the connecting rod and the chamber bucket.

[0018] By adopting the above technical solution, the first motor drives the driving gear to rotate continuously. When the teeth on the driving gear engage with the driven gear, the driven gear can rotate along with it, and the driven gear drives the corresponding connecting rod to rotate. Under the action of the connecting rope, the two connecting rods can rotate in opposite directions; when the teeth on the driving gear disengage from the driven gear, the torsion spring causes the two connecting rods to drive the corresponding baffle to rotate and reset, so that the baffle can swing quickly during the reset process, making it easier for wood ash and other powder materials attached to the baffle to fall off, thereby enhancing the collection effect of wood ash and powder materials.

[0019] Optionally, a knocking assembly and a power assembly are provided in the smoke chamber, and the knocking assembly is provided with multiple groups, and the knocking assembly includes a support rod, a knocking rod, a transmission gear, a rack and a spring. The knocking rod is fixedly connected to the support rod, and multiple knocking rods are provided and arranged at intervals. One end of the knocking rod is used to abut against the third sleeve, and the transmission gear is rotatably connected to the inner wall of the smoke chamber. Only a part of the teeth are provided on the opposite sides of the transmission gear. The rack is fixedly connected to the support rod, and the rack is slidably provided on the inner wall of the smoke chamber. The rack is used to mesh with the transmission gear, and the spring is connected between the rack and the inner wall of the smoke chamber to make the knocking rod abut against the third sleeve, and the power assembly is used to drive the transmission gear to rotate.

[0020] By adopting the above technical solution, the third jacket in the smoke chamber can effectively absorb the heat in the flue gas and convert it into usable heat energy; however, long-term operation will cause a large amount of dust to accumulate on the outer surface of the third jacket, affecting the heat exchange efficiency; therefore, the additional knocking assembly and power assembly can intermittently knock on the outer wall of the third jacket to make the third jacket vibrate, remove the accumulated dust on the outer surface of the third jacket, and ensure its continuous and efficient heat exchange; in addition, when the knocking rod knocks on the third jacket, the scale attached to the inner wall of the third jacket can also be vibrated off, making it difficult for scale to accumulate on the inner wall of the third jacket, which can further ensure the heat exchange efficiency.

[0021] Optionally, two racks are provided and are located on both sides of the transmission gear respectively, two springs are provided and are connected to the two racks respectively, and each rack is provided with a support rod and a knock rod.

[0022] By adopting the above technical solution, two racks are set and located on both sides of the transmission gear respectively, which can achieve a two-way knocking effect, thereby knocking the third jacket on both sides of the partition, which helps to enhance the knocking effect.

[0023] Optionally, the power assembly includes a second motor, a rotating rod, a connecting shaft and a bevel gear pair, the rotating rod is connected to the output shaft of the second motor, there are multiple connecting shafts and each connecting shaft is connected to a transmission gear, there are multiple groups of bevel gear pairs and each group of bevel gear pairs corresponds to a connecting shaft, and the bevel gear pair is transmission-connected between the connecting shaft and the rotating rod.

[0024] By adopting the above technical solution, the second motor realizes synchronous driving of multiple transmission gears through the rotating rod and multiple sets of bevel gear pairs, ensuring that each set of knocking components can move synchronously, thereby improving the stability and reliability of the system.

[0025] In summary, this application has the following beneficial technical effects: 1. The first heat exchange component can recycle the waste heat at the kiln head, the second heat exchange component can recycle the waste heat at the chamber bucket, and the third heat exchange component can recycle the waste heat in the smoke chamber, thereby reducing the heat diffused into the external environment, helping to ensure the working environment and improving resource utilization.

[0026] 2. The baffle is set at the opening of the chamber, which can block the flue gas entering the chamber and the ash and dust escaping to the outside, thereby reducing the ash and dust escaping into the smoke chamber and helping to ensure the ash reduction effect on high-temperature flue gas.

[0027] 3. The knocking component can knock on the outer wall of the third jacket to shake off the ash attached to the outer wall of the third jacket and the scale on the inner wall of the third jacket, thereby ensuring the heat exchange effect of the third jacket. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 is a cross-sectional view of Example 1 of the present application; Figure 3 This is a schematic structural diagram of the chamber in Example 1 of the present application; Figure 4 yes Figure 3 A magnified schematic diagram of point A in the middle; Figure 5 This is a schematic diagram showing the structure of the drive assembly in Example 1 of the present application; Figure 6 is a cross-sectional view of Example 1 of the present application for illustrating the striking component; Figure 7 Schematic diagram of the structure of the striking component and the power component in Example 1 of the present application; Figure 8 This is a cross-sectional view of Example 2 of the present application.

[0029] Reference numerals: 1, kiln head; 2, smoke chamber; 21, smoke outlet; 3, chamber bucket; 31, discharge valve; 32, support block; 4, first heat exchange component; 41, first jacket; 411, first inlet; 412, first outlet; 42, first power source; 5, second heat exchange component; 51, second jacket; 511, second inlet; 512, second outlet; 6, insulation board; 7, partition; 8, third heat exchange component; 81, third jacket; 9, baffle; 91, connecting rod; 92, dust leakage hole; 10, drive Driving assembly; 101, first motor; 102, driving gear; 103, driven gear; 104, connecting rope; 105, torsion spring; 11, knocking assembly; 111, support rod; 112, knocking rod; 113, transmission gear; 114, rack; 115, spring; 116, mounting block; 12, power assembly; 121, second motor; 122, rotating rod; 123, connecting shaft; 124, bevel gear pair; 1241, driving bevel gear; 1242, driven bevel gear; 13, bump. DETAILED DESCRIPTION

[0030] The following combination Figures 1-8 This application is described in further detail.

[0031] Example 1 The embodiment of the present application discloses a system for recovering and utilizing waste heat from the kiln head and smoke chamber of a calcining kiln. Figure 1 and Figure 2The kiln head and smoke chamber waste heat recovery system of the calcining kiln is installed at the kiln head 1 and smoke chamber 2. One end of the kiln head 1 is connected to the interior of the smoke chamber 2, so that the high-temperature flue gas inside the calcining kiln can enter the smoke chamber 2 through the kiln head 1. The end of the smoke chamber 2 away from the kiln head 1 is provided with a smoke exhaust port 21 to facilitate the discharge of the smoke in the smoke chamber 2 to subsequent equipment.

[0032] A chamber hopper 3 is fixedly connected to the bottom of the smoke chamber 2. Two chamber hoppers 3 are provided, and in other embodiments, a greater number of chamber hoppers 3 may be provided. The chamber hopper 3 is connected to the interior of the smoke chamber 2, thereby facilitating the collection of ash and other ash materials in the smoke. The chamber hopper 3 is wide at the top and narrow at the bottom. A discharge valve 31 is provided at the bottom of the chamber hopper 3. When the discharge valve 31 is opened, the ash in the chamber hopper 3 can be discharged, thereby emptying the chamber hopper 3. A partition 7 is fixedly connected to the inner wall of the smoke chamber 2. Multiple partitions 7 are provided and arranged at intervals along the length of the smoke chamber 2. Adjacent partitions 7 are staggered in an up-and-down manner, so that the partitions 7 can block the smoke flowing in the smoke chamber 2. On the one hand, this can prevent the smoke from being discharged too quickly, and on the other hand, it can block ash and other ash materials in the smoke. The ash can adhere to the baffle 9 and then fall into the chamber hopper 3, thereby enhancing the ash reduction effect. Since wood ash has a strong heat storage capacity, separating the wood ash powder from the high-temperature flue gas helps to lower the temperature of the flue gas, making it easier to process the flue gas later.

[0033] Reference Figure 2 The waste heat recovery and utilization system includes a first heat exchange component 4 and a second heat exchange component 5. The first heat exchange component 4 includes a first jacket 41 and a first power source 42. The first jacket 41 is arranged on the outside of the kiln head 1 near the smoke chamber 2. Both ends of the first jacket 41 are rotatably connected to the outer wall of the kiln head 1. Therefore, when the kiln head 1 rotates, the first jacket 41 can remain stationary. The first jacket 41 is provided with a first inlet 411 and a first outlet 412. The first power source 42 is a fan. The first power source 42 is fixedly connected to the first inlet 411 and the first outlet 412. Therefore, after the air flows into the interior of the first jacket 41 through the first inlet 411, the air can exchange heat with the outer wall of the kiln head 1 (the temperature of the kiln head 1 is 140℃-180℃), so that the air temperature increases. The heated air is then discharged through the first outlet 412, thereby realizing the recovery and utilization of the heat at the kiln head 1.

[0034] Reference Figure 1 and Figure 2The second heat exchange assembly 5 includes a second jacket 51 and a second power source. The second jacket 51 is positioned over the exterior of the chamber 3, forming a cavity between the second jacket 51 and the outer wall of the chamber 3. The second jacket 51 is provided with a second inlet 511 and a second outlet 512. The second power source is a fan, which is fixedly mounted at the second inlet 511 and the second outlet 512. Therefore, after air flows into the interior of the second jacket 51 through the second inlet 511, it exchanges heat with the outer wall of the chamber 3 (the temperature of the chamber 3 is 200°C-260°C), increasing the air temperature. The heated air is then discharged through the second outlet 512, thereby recycling the heat in the chamber 3.

[0035] In this embodiment, the heat transfer medium within the first jacket 41 and the second jacket 51 is air. Therefore, the air discharged from the first outlet 412 and the second outlet 512 can be used for heating the factory or for steam curing in production, such as curing concrete. In other embodiments, the heat transfer medium can also be thermal oil. In this case, the first power source 42 and the second power source are both pumps for circulating the thermal oil. The heated thermal oil can then be used for other purposes.

[0036] Reference Figure 2 Furthermore, the outer walls of the first jacket 41 and the second jacket 51 are fixedly connected with the insulation board 6, thereby reducing heat loss.

[0037] A third heat exchange assembly 8 is also installed within the smoke chamber 2. The third heat exchange assembly 8 comprises a third jacket 81, a water pump, a steam pipe, a steam valve, and a steam trap. The third jacket 81 is fixedly mounted within the smoke chamber 2, covering the top inner wall of the smoke chamber 2 and the outside of the top partition 7. The third jacket 81 defines a cavity within the interior and is provided with a water inlet and a drain, both of which are equipped with valves. The water pump is fixedly mounted on the third jacket 81, located at the water inlet, allowing it to deliver water into the third jacket 81. The drain is located at a lower point within the third jacket 81, facilitating the drainage of water from the third jacket 81. A steam pipe is fixedly connected to the third jacket 81 and communicates with the interior of the third jacket 81. A steam valve is provided on the steam pipe to control the discharge of steam. A steam trap is installed at the junction of the steam pipe and the third jacket 81. It drains condensed water from the steam pipe, thus preventing steam flow obstruction. Therefore, after water is added to the third jacket 81 through the water inlet, the hotter inner walls of the smoke chamber 2 and the partition 7 exchange heat with the third jacket 81 (the internal temperature of the smoke chamber 2 is 350°C-550°C), heating the water in the third jacket 81 into steam. The steam is then discharged through the steam pipe, thus recovering the waste heat from the smoke chamber 2.

[0038] Two baffles 9 are installed at the opening of the chamber 3, one attached to each of the two opposing inner walls. The two baffles 9 are located at different heights, and the openings formed between the two baffles 9 and the inner wall of the chamber 3 are located on different sides, resulting in a staggered arrangement of the two baffles 9. Flue gas entering the smoke chamber 2 flows downward under the action of the partition 7. The baffles 9 block this downward flow of flue gas, preventing excessive flue gas from entering the chamber 3. This would cause the ash in the chamber 3 to continuously diffuse outward due to the flowing flue gas, thus ensuring efficient collection of the ash in the chamber 3.

[0039] Reference Figure 2 and Figure 3 The baffle 9 is tilted, and the opening between it and the inner wall of the chamber 3 is located on the lower side of the baffle 9. This allows ash adhering to the baffle 9 to easily slide down into the chamber 3. A connecting rod 91 is fixedly connected to the upper side of the baffle 9. The connecting rod 91 is horizontally arranged. The connecting rod 91 is connected to the inner wall of the chamber 3 for rotation about its own axis. The chamber 3 is provided with a drive assembly 10 for driving the connecting rod 91.

[0040] Reference Figure 3 、 Figure 4 and Figure 5 The drive assembly 10 includes a first motor 101, a driving gear 102, a driven gear 103, a connecting rope 104, and a torsion spring 105. The first motor 101 is fixedly connected to the outer wall of the chamber 3, and the output shaft of the first motor 101 is arranged horizontally. The teeth on the driving gear 102 are only partially provided, and the driving gear 102 is coaxially fixedly connected to the output shaft of the first motor 101; the driven gear 103 is coaxially fixedly connected to the end of one of the connecting rods 91 that passes through the chamber 3; the driven gear 103 is used to mesh with the driving gear 102. A torsion spring 105 is provided at both ends of each connecting rod 91, and each torsion spring 105 is fixedly connected between the connecting rod 91 and the inner wall of the chamber 3. A support block 32 is fixedly connected to the inner wall of the chamber 3, and the support block 32 is located above the baffle 9. Under normal conditions, the torsion spring 105 causes the top wall of the baffle 9 to press against the bottom wall of the support block 32, and the baffle 9 is arranged at an angle. The connecting rope 104 is a flexible rope without elasticity, and the two ends of the connecting rope 104 are respectively wound around the two connecting rods 91 and fixedly connected to the connecting rods 91. The connecting rope 104 is in a tensioned and straight state, so when one connecting rod 91 rotates, it can drive the other connecting rod 91 to rotate in the opposite direction.

[0041] After the first motor 101 is started, the driving gear 102 rotates continuously. When the teeth on the driving gear 102 mesh with the driven gear 103, the driving gear 102 drives the driven gear 103 to rotate, and the driven gear 103 drives the corresponding connecting rod 91 to rotate. Under the action of the connecting rope 104, the other connecting rod 91 rotates in the opposite direction, thereby causing the two connecting rods 91 to rotate in the opposite direction, thereby causing the two baffles 9 to rotate in the opposite direction, that is, both baffles 9 rotate toward the side closer to the bottom of the chamber 3, at which time the torsion spring 105 is further twisted. When the teeth on the driving gear 102 disengage from the driven gear 103, the torsion spring 105 causes the two connecting rods 91 to rotate upward, causing the two baffles 9 to rotate upward and reset until the baffles 9 abut against the support block 32. Since the support block 32 limits the position of the baffle 9, the baffle 9 will hit the support block 32 during the rotation process under the action of the torsion spring 105, thereby forming a knock, causing the baffle 9 to vibrate, thereby easily shaking off the ash attached to the baffle 9, further enhancing the collection effect of the ash.

[0042] Reference Figure 6 and Figure 7 , a knocking assembly 11 and a power assembly 12 are also provided in the smoke chamber 2. There are multiple groups of knocking assemblies 11, and the number of knocking assemblies 11 is the same as the number of partitions 7 fixedly connected to the top wall of the smoke chamber 2, and each knocking assembly 11 corresponds to a partition 7. The knocking assembly 11 includes a support rod 111, a knocking rod 112, a transmission gear 113, a rack 114, a spring 115 and a mounting block 116. There are two support rods 111, and both are arranged along the width direction of the smoke chamber 2. The knocking rod 112 is fixedly connected to the side where the two support rods 111 are close to each other. The knocking rod 112 is arranged along the length direction of the smoke chamber 2. There are multiple knocking rods 112 and they are evenly spaced along the length direction of the support rods 111.

[0043] The mounting block 116 is fixedly connected to the side wall inside the smoke chamber 2; a receiving slot is provided in the mounting block 116, and the axis of the transmission gear 113 is vertically and rotatably connected to the receiving slot. Only a portion of the teeth are provided on the opposite sides of the transmission gear 113. Two racks 114 are provided, corresponding to the two support rods 111 respectively; the mounting block 116 is provided with a strip groove along the length of the smoke chamber 2, and there are two strip grooves, which are respectively corresponding to the two racks 114. The two racks 114 are respectively slidably connected to the two strip grooves, with the teeth of the two racks 114 facing the side close to each other. The strip groove is connected to the receiving slot, so that the rack 114 can engage with the transmission gear 113. The rack 114 is arranged along the length of the smoke chamber 2, and the two racks 114 are respectively fixedly connected to the ends of the two support rods 111. Two springs 115 are provided, one corresponding to each of the two racks 114. A protrusion 13 is fixedly connected to the inner wall of the smoke chamber 2, and the spring 115 is fixedly connected between the rack 114 and the protrusion 13. Under normal conditions, the spring 115 is in a stretched state, causing the striking rod 112 to press against the outer wall of the third jacket 81. The power assembly 12 is mounted on the smoke chamber 2 and is used to drive the transmission gear 113 to rotate. One of the rods 111 has an escape groove, through which the spring 115 extends, allowing the rod 111 to slide normally.

[0044] Therefore, during the continuous rotation of the transmission gear 113, when the teeth on both sides of the transmission gear 113 are respectively engaged with the two racks 114, the two racks 114 can slide toward the side away from each other, and the racks 114 drive the support rod 111 and the knocking rod 112 to slide, so that the knocking rod 112 moves away from the third sleeve 81, and the spring 115 is further stretched. When the teeth on the transmission gear 113 disengage from the meshing with the rack 114, the spring 115 causes the rack 114 to slide back and forth, causing the two racks 114 to slide toward each other, thereby causing the two support rods 111 to drive the knocking rod 112 to slide toward each other, until the knocking rod 112 abuts against the outer wall of the third jacket 81. The reset knocking rod 112 can knock on the outer wall of the third jacket 81, thereby vibrating off the ash attached to the outer wall of the third jacket 81, which can enhance the collection effect of the ash and reduce the influence of the attached ash on the heat exchange effect of the third jacket 81.

[0045] The power assembly 12 includes a second motor 121, a rotating rod 122, a connecting shaft 123, and a bevel gear pair 124. The second motor 121 is fixedly connected to the top wall of the smoke chamber 2, and the output shaft of the second motor 121 is arranged along the length direction of the smoke chamber 2. The rotating rod 122 is rotatably connected to the top wall of the smoke chamber 2, and the rotating rod 122 and the output shaft of the second motor 121 are coaxially fixedly connected. There are multiple connecting shafts 123, and the number of connecting shafts 123 is the same as the number of transmission gears 113, and each connecting shaft 123 corresponds to a transmission gear 113. The bottom end of the connecting shaft 123 is coaxially fixedly connected to the corresponding transmission gear 113, and the top end of the connecting shaft 123 passes through the top wall of the smoke chamber 2 and is rotatably connected to the top wall of the smoke chamber 2. There are multiple sets of bevel gear pairs 124 corresponding to the connecting shafts 123, and each bevel gear pair 124 corresponds to a connecting shaft 123.

[0046] Reference Figure 7 The bevel gear pair 124 includes a driving bevel gear 1241 and a driven bevel gear 1242. The driving bevel gear 1241 is coaxially fixedly connected to the rotating rod 122, and the driven bevel gear 1242 is coaxially fixedly connected to the end of the connecting shaft 123 that passes through the smoke chamber 2. The driving bevel gear 1241 and the driven bevel gear 1242 are meshed. Therefore, when the second motor 121 is started, the rotating rod 122 can be rotated. Under the cooperation of the driving bevel gear 1241 and the driven bevel gear 1242, the rotation of the rotating rod 122 can drive the multiple connecting shafts 123 to rotate synchronously, thereby rotating the multiple transmission gears 113.

[0047] The operating principle of Example 1 is as follows: High-temperature flue gas from the kiln head 1 flows into the smoke chamber 2, bypasses multiple baffles 7, and is discharged from the exhaust port 21 at the end of the smoke chamber 2 to the next device for cooling and further ash reduction. After the flue gas in the smoke chamber 2 is blocked by the baffles 7, a portion of the high-temperature wood ash dust in the flue gas falls into the hopper 3 for collection, resulting in a large amount of high-temperature wood ash dust accumulating in the hopper 3.

[0048] During the process of ash reduction treatment of the flue gas by the smoke chamber 2, the outer wall of the kiln head 1 can exchange heat with the air in the first jacket 41, and the air in the first jacket 41 is discharged after being heated; the outer wall of the chamber 3 can exchange heat with the air in the second jacket 51, and the air in the second jacket 51 is discharged after being heated; the hot air discharged from the first jacket 41 and the second jacket 51 can be used for heating inside the factory or steaming in production, thereby realizing the recovery and utilization of waste heat.

[0049] The inside of the smoke chamber 2 can heat the water in the third jacket 81. Since the temperature of the smoke chamber 2 is relatively high and the contact area with the third jacket 81 is large, the water in the third jacket 81 can be converted into steam, and the steam is then discharged through the steam valve, thereby further realizing the recovery and utilization of the waste heat of the smoke chamber 2.

[0050] During the ash lowering process, the first motor 101 rotates continuously, causing the two baffles 9 to swing intermittently. During the process of resetting the baffle 9 under the action of the torsion spring 105, the baffle 9 will resist the support block 32, causing the baffle 9 to stop rotating quickly. As a result, the baffle 9 will vibrate, thereby shaking off the ash attached to the baffle 9, which can enhance the collection effect of the ash.

[0051] At the same time, the second motor 121 continues to rotate, so that the knocking rods 112 on both sides of the third jacket 81 intermittently knock on the outer wall of the third jacket 81, thereby vibrating off the ash attached to the outer wall of the third jacket 81, further enhancing the collection effect of the ash.

[0052] Example 2 Reference Figure 8 This embodiment differs from the first embodiment in that the baffle 9 of this embodiment is provided with a plurality of dust holes 92 arranged in an array. The dust holes 92 are arranged in a frustum-shaped manner, and the diameter of the top opening of the dust holes 92 is larger than the diameter of the bottom opening. As a result, the wood ash dust on the top surface of the baffle 9 can continuously fall into the chamber 3 below under the influence of its own gravity and the wind from above, which is more conducive to ash collection and dust removal.

[0053] Since the dust leakage hole is arranged in a truncated cone shape, the wood ash below the baffle 9 is not easy to move to the top of the baffle 9 through the dust leakage hole 92, thereby reducing the impact of the dust leakage hole 92 on the blocking effect of the baffle 9.

[0054] The above are optional embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A kiln head and smoke chamber waste heat recovery and utilization system of a calcining kiln, which is arranged at the kiln head (1) and the smoke chamber (2), wherein the kiln head (1) is connected to the interior of the smoke chamber (2), and a chamber hopper (3) for accommodating ash is fixedly connected to the smoke chamber (2), and the chamber hopper (3) is connected to the interior of the smoke chamber (2), characterized in that: include: a first heat exchange component (4), the first heat exchange component (4) comprising a first jacket (41) and a first power source (42), the first jacket (41) being arranged on the outer side of the kiln head (1) near one end of the smoke chamber (2), the first jacket (41) being provided with a first inlet (411) and a first outlet (412), the first power source (42) being used to drive the heat transfer medium in the first jacket (41) to flow, so that the heat transfer medium can flow into the first jacket (41) from the first inlet (411) and then flow out from the first outlet (412); The second heat exchange component (5) includes a second jacket (51) and a second power source. The second jacket (51) is arranged on the outside of the chamber (3). The second jacket (51) is provided with a second inlet (511) and a second outlet (512). The second power source is used to drive the heat transfer medium in the second jacket (51) to flow, so that the heat transfer medium can flow into the second jacket (51) from the second inlet (511) and then flow out from the second outlet (512).

2. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 1, characterized in that: Insulation plates (6) are provided on the outsides of the first jacket (41) and the second jacket (51).

3. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 1, characterized in that: A partition (7) is provided in the smoke chamber (2), and a plurality of partitions (7) are provided and are arranged in a staggered manner.

4. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 3, characterized in that: A third heat exchange component (8) is provided in the smoke chamber (2), and the third heat exchange component (8) includes a third jacket (81), a water pump, a steam pipe, a steam valve and a steam trap. The third jacket (81) is provided inside the smoke chamber (2), and the third jacket (81) is covered on the inner wall of the smoke chamber (2) and the outer side of the partition (7). A water inlet and a drain outlet are provided on the third jacket (81), the water pump and the steam pipe are both provided on the third jacket (81), and the steam valve and the steam trap are both provided on the steam pipe.

5. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 1, characterized in that: A baffle (9) is provided at the opening of the chamber bucket (3), and two baffles (9) are provided and are respectively located on two opposite side walls inside the chamber bucket (3). The two baffles (9) are located at different heights of the chamber bucket (3), and the opening formed between the two baffles (9) and the inner wall of the chamber bucket (3) is staggered.

6. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 5, characterized in that: The baffle (9) is arranged at an angle, and the opening formed between the baffle (9) and the inner wall of the chamber bucket (3) is located on a side of the baffle (9) close to the bottom of the chamber bucket (3).

7. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 6, characterized in that: The two baffles (9) are fixedly connected to a connecting rod (91), the connecting rod (91) is rotatably connected to the chamber bucket (3), and the chamber bucket (3) is provided with a driving assembly (10), the driving assembly (10) includes a first motor (101), a driving gear (102), a driven gear (103), a connecting rope (104) and a torsion spring (105), the driving gear (102) is connected to the output shaft of the first motor (101), the teeth on the driving gear (102) are only partially provided, the driven gear (103) is coaxially fixedly connected to one of the connecting rods (91), the driven gear (103) is used to mesh with the driving gear (102), the connecting rope (104) is fixedly connected between the two connecting rods (91), so that when one connecting rod (91) rotates, the other connecting rod (91) can be driven to rotate, and the torsion spring (105) is connected between the connecting rod (91) and the chamber bucket (3).

8. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 4, characterized in that: The smoke chamber (2) is provided with a knocking assembly (11) and a power assembly (12). The knocking assembly (11) is provided with multiple groups. The knocking assembly (11) includes a support rod (111), a knocking rod (112), a transmission gear (113), a rack (114) and a spring (115). The knocking rod (112) is fixedly connected to the support rod (111). The knocking rod (112) is provided with multiple and spaced apart arrangements. One end of the knocking rod (112) is used to abut against the third jacket (81). The transmission gear (113) is rotatably connected to the third jacket (81). On the inner wall of the smoke chamber (2), only a portion of teeth are provided on opposite sides of the transmission gear (113), the rack (114) is fixedly connected to the support rod (111), the rack (114) is slidably provided on the inner wall of the smoke chamber (2), the rack (114) is used to engage with the transmission gear (113), the spring (115) is connected between the rack (114) and the inner wall of the smoke chamber (2) so that the knocking rod (112) and the third jacket (81) are abutted, and the power assembly (12) is used to drive the transmission gear (113) to rotate.

9. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 8, characterized in that: Two racks (114) are provided and are respectively located on both sides of the transmission gear (113); two springs (115) are provided and are respectively connected to the two racks (114); and each rack (114) is provided with a support rod (111) and a knock rod (112).

10. The kiln head and smoke chamber waste heat recovery system of a calcining kiln according to claim 8, characterized in that: The power assembly (12) includes a second motor (121), a rotating rod (122), a connecting shaft (123) and a bevel gear pair (124). The rotating rod (122) is connected to the output shaft of the second motor (121). A plurality of connecting shafts (123) are provided, and each connecting shaft (123) is connected to a transmission gear (113). A plurality of bevel gear pairs (124) are provided, and each group of bevel gear pairs (124) corresponds to a connecting shaft (123). The bevel gear pairs (124) are transmission-connected between the connecting shaft (123) and the rotating rod (122).

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