A cement clinker cooling waste heat recovery device

Abstract

The present invention discloses a waste heat recovery device for cooling cement clinker, which relates to the field of high-efficiency energy-saving industrial technology. Specifically, it includes a mounting platform and a grate cooler body arranged thereon, and a grate plate is arranged in the grate cooler body. The right end of the grate cooler body is provided with a waste heat recovery box into which materials can be transported through the grate plate. The interior of the waste heat recovery box is provided with a material barrel that can shake. The waste heat recovery device for cooling cement clinker realizes efficient heat transfer by constructing a waste heat recovery structure composed of a grate cooler body, a waste heat recovery box, a material barrel, a material spiral plate and a heat collection spiral groove plate. The grate cooler body cooperates with the grate plate to transport the cement clinker to the waste heat recovery box. The crushing component and the connecting hose guide the cement clinker into the material barrel and fall on the material spiral plate. The vibration motor and the first spring cause the material barrel to vibrate, allowing the cement clinker to move downward along the material spiral plate.

Description

Technical Field

[0001] The present invention relates to the technical field of high-efficiency energy-saving industry, and more particularly to a cement clinker cooling waste heat recovery device. Background Art

[0002] Cement clinker is a semi-finished product made from limestone, clay, and iron as primary raw materials. Raw materials are mixed in appropriate proportions, burned until partially or completely molten, and then cooled. In the cement industry, the most commonly used Portland cement clinker consists primarily of calcium oxide, silicon dioxide, and small amounts of aluminum oxide and iron oxide. Its primary mineral components are tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium aluminoferrite. Portland cement is produced by grinding Portland cement clinker with an appropriate amount of gypsum.

[0003] During the cement clinker production process, grate coolers are often used to cool high-temperature cement clinker. As a key component of a cement plant's clinker firing system, grate coolers are responsible for cooling and transporting the cement clinker. They also provide hot air to rotary kilns and precalciners, making them the core equipment for heat recovery in the firing system. However, when the cement clinker exits the grate cooler, it still carries a significant amount of heat, which is dissipated into the environment. According to the second law of thermodynamics, heat always spontaneously transfers from a high-temperature object to a low-temperature object. If this dissipated heat is not effectively utilized, it represents a significant waste of energy.

[0004] In view of this, the existing technology has begun to recover the waste heat of this part of cement clinker. For example, take the "Waste Heat Recovery and Utilization Equipment of a Grate Cooler for Cement Clinker Production" with application number 202410753052.X as an example. This patent can indeed recover the heat emitted by the cement clinker on the heat transfer plate by setting a heat transfer pipe. However, from the perspective of Fourier's law of heat transfer, it has obvious disadvantages. Fourier's law shows that the heat conduction rate is proportional to the contact area between objects and inversely proportional to the thermal resistance of the heat transfer path. In this patent, the actual contact area between the heat pipe and the heat transfer plate is relatively limited, which greatly limits the heat transfer rate. In addition, the heat emitted by the cement clinker needs to pass through the heat transfer plate and the heat transfer pipe in sequence before it can be transferred to the normal temperature water. The additional transfer medium and path greatly increase the thermal resistance, resulting in a significant reduction in its heat exchange efficiency. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a cement clinker cooling waste heat recovery device, which solves the problems raised in the above background technology.

[0006] The technical solutions of the present invention are as follows:

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cement clinker cooling waste heat recovery device, comprising a mounting platform and a grate cooler body arranged thereon, and a grate plate is arranged in the grate cooler body, and a waste heat recovery box is provided at the right end of the grate cooler body, into which materials can be transported through the grate plate, and a material barrel that can shake is provided inside the waste heat recovery box, and a material spiral plate that can prompt the crushed material to move spirally downward is provided in the material barrel, and a heat collection spiral groove plate is fixedly connected to the lower surface of the material spiral plate, and a plurality of dividing spiral plates that can evenly divide the grooves on the upper surface of the heat collection spiral groove plate into a plurality of flow channels are provided on the inner bottom surface of the heat collection spiral groove plate, and a plurality of rotating parts that can rotate by liquid flow are provided in each flow channel, and a plurality of dial plates that can intermittently rotate and rotate are provided on the upper surface of the material spiral plate.

[0008] Preferably, a crushing component capable of crushing cement clinker falling from the grate is provided on the upper left side of the waste heat recovery box, and a connecting hose with one end connected to the feed port at the top of the material barrel is provided at the discharge port at the bottom end of the crushing component, a vibration motor is provided at the right end of the upper surface of the material barrel, and a plurality of first springs with one end fixedly connected to the bottom surface of the waste heat recovery box are evenly provided on the lower surface of the material barrel.

[0009] Preferably, the top and bottom ends of the heat collection spiral groove plate are each provided with a hard tube having one end extending thereinto, and the end of the hard tube away from the heat collection spiral groove plate is fixedly connected to a hose having one end extending outside the waste heat recovery box, and the end of the hard tube extending into the heat collection spiral groove plate is provided with a plurality of openings corresponding one-to-one to the flow channels.

[0010] Preferably, the lower surface of the shift plate is fixedly connected to a support barrel with one end passing through the material spiral plate, the support barrel is rotatably connected to the material spiral plate, the bottom end of the support barrel is rotatably connected to the inner bottom surface of the heat collection spiral groove plate, and the bottom end of the support barrel is provided with a reset torsion spring with one end arranged on the inner bottom surface of the heat collection spiral groove plate.

[0011] Preferably, the rotating component includes a mounting cylinder with one end rotatably connected to the inner bottom surface of the heat collection spiral groove plate, the top end of the mounting cylinder is provided with a plurality of driving arc plates that can rotate along with the mounting cylinder, the top end of the inner circumference of the mounting cylinder is fixedly connected with a driving ring, the middle part of the outer circumference of the support barrel is fixedly connected with a driven ring, and the inner circumference of the driving ring is provided with a limiting component at one end which can be clamped in the driven ring.

[0012] Preferably, a connecting block is fixedly connected to the top of the outer circumference of the mounting tube, the connecting block is fixedly connected to the connecting tube at one end away from the mounting tube, a plurality of auxiliary connecting plates are evenly fixedly connected to the outer circumference of the connecting tube, and the ends of the plurality of auxiliary connecting plates away from the connecting tube are respectively fixedly connected to the corresponding driving arc plates.

[0013] Preferably, the limiting component includes a limiting column with one end slidingly connected to the driving ring, the end of the limiting column away from the driven ring is fixedly connected to a third spring, and the outer peripheral surface of the driven ring is provided with two limiting grooves facing each other.

[0014] Preferably, a growth arc plate with one end that can be pulled outward is inserted into the lower surface of the driving arc plate, a driving column is slidably connected in the supporting barrel, the bottom end of the driving column is fixedly connected to a second spring with one end arranged on the bottom surface of the supporting barrel, and two limit blocks are fixedly connected in the middle of the circumference of the driving column with their backs to each other, the end of the limit block away from the driving column passes through the supporting barrel and is clamped in the driven barrel, an annular limit groove is provided on the upper part of the inner circumference of the driven barrel, and one end of the limit block is clamped in the annular limit groove.

[0015] Preferably, a soft plate is provided at the bottom end of the shift plate, the interior of the soft plate is hollow, and one end of the soft plate is connected to the support barrel, and the outer circumference of the driven cylinder is evenly fixedly connected with a plurality of connecting rods, one end of which is respectively fixedly connected to the corresponding growth arc plate, and the middle part of the mounting cylinder is evenly provided with a plurality of limit openings, and the plurality of connecting rods are respectively slidably connected in the corresponding limit openings.

[0016] Preferably, an elastic arc plate is fixedly connected to the inner side surface of the driving arc plate, and the side of the elastic arc plate that is in contact with the growth arc plate is an inclined surface.

[0017] Beneficial effects

[0018] The present invention provides a cement clinker cooling waste heat recovery device, which has the following beneficial effects:

[0019] This cement clinker cooling waste heat recovery device achieves efficient heat transfer by constructing a waste heat recovery architecture consisting of a grate cooler, a waste heat recovery tank, a material drum, a material spiral plate, and a heat collection spiral fluted plate. The grate cooler and grate plate work together to convey the cement clinker to the waste heat recovery tank. A crushing component and a connecting hose guide the cement clinker into the material drum, where it lands on the material spiral plate. A vibration motor and a first spring cause the material drum to vibrate, causing the cement clinker to spiral downward along the material spiral plate. The grooves and separating spiral plates on the heat collection spiral fluted plate form multiple flow channels, allowing ambient temperature water to flow through the top hose, directly contact the material spiral plate for heat exchange, and then exit through the bottom hose. This design avoids the indirect heat transfer path used in traditional methods. Based on Fourier's law and heat transfer principles, it increases the effective heat transfer area, reduces thermal resistance, and significantly improves heat transfer efficiency, thereby effectively improving cement clinker waste heat recovery and increasing waste heat recovery.

[0020] 2. The cement clinker cooling waste heat recovery device effectively overcomes obstacles in the heat exchange process through the arrangement of a series of structures such as a dial plate, a support barrel, a reset torsion spring, a driving arc plate, a growth arc plate, and an elastic arc plate. The dial plate is connected to the support barrel, and the support barrel is rotatably connected to the material spiral plate and the heat collection spiral groove plate. The reset torsion spring provides rotational power. The water flow impacts the driving arc plate, which drives a series of components to make the dial plate rotate and swivel intermittently. According to the principles of material handling and dispersion dynamics, the cement clinker agglomeration is destroyed, the material distribution is optimized, and the heat exchange efficiency is improved. At the same time, the driving arc plate rotates to destroy the thermal boundary layer, the growth arc plate is pulled out to increase the stirring range, and the elastic arc plate guides the flow of normal temperature water. According to the boundary layer theory in heat transfer and the principles of fluid dynamics, the thermal boundary layer and the temperature stratification of normal temperature water are effectively destroyed, which greatly increases the probability of normal temperature water mixing at different positions, and comprehensively improves the heat exchange efficiency and performance of the entire waste heat recovery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the waste heat recovery box of the present invention when viewed from the front;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlarged in the middle;

[0024] Figure 4 Schematic diagram of the matching structure between the rotating component and the paddle of the present invention;

[0025] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0026] Figure 6Schematic diagram of the matching structure of the connecting cylinder, the auxiliary connecting plate and the driving arc plate of the present invention;

[0027] Figure 7 This is a schematic diagram of the matching structure of the paddle, soft board and support barrel of the present invention;

[0028] Figure 8 Schematic diagram of the cross-sectional structure of the driving ring and the driven ring of the present invention when viewed from above;

[0029] Figure 9 Schematic diagram of the coordinated structure of the driving arc plate, the elastic arc plate and the growth arc plate of the present invention;

[0030] Figure 10 This is a schematic diagram of a partial cross-sectional structure of a heat collection spiral groove plate according to the present invention when viewed from above;

[0031] Figure 11 It is a structural schematic diagram of the separating spiral plate of the present invention.

[0032] In the figure: 1. Grate cooler body; 3. Waste heat recovery box; 4. Crushing component; 5. Grate plate; 6. Vibrating motor; 7. Material barrel; 8. Heat collection spiral groove plate; 9. Material spiral plate; 10. Paddle plate; 11. Mounting platform; 12. First spring; 13. Hard pipe; 14. Hose; 15. Connecting hose; 16. Separating spiral plate; 17. Mounting cylinder; 18. Reset torsion spring; 19. Support barrel; 20. Driving column; 21. Auxiliary connecting plate; 22. Connecting cylinder; 23. Limiting groove; 24. Connecting block; 25. Connecting rod; 26. Growth arc plate; 27. Driven cylinder; 28. Limiting block; 29. Second spring; 30. Driving ring; 31. Driven ring; 32. Driving arc plate; 33. Soft plate; 34. Third spring; 35. Limiting column; 36. Support column; 37. Elastic arc plate. DETAILED DESCRIPTION

[0033] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] Example 1

[0035] Current waste heat recovery technology for cement clinker relies on the principle of heat conduction, whereby heat spontaneously transfers from a high-temperature object to a low-temperature object. A common method involves attaching pipes to the underside of a material plate. Water circulating within these pipes absorbs the heat transferred from the cement clinker to the plate, thus recovering the waste heat.

[0036] However, from a heat transfer perspective, this existing technology has obvious limitations. First, the actual contact area between the pipe and the lower surface of the material plate is relatively limited. According to Fourier's law, the size of the contact area is directly related to the heat transfer rate. A smaller contact area will limit the efficiency of heat transfer. Second, the heat must first pass through the material plate and then be transferred to the water in the pipe. The additional transfer medium and path will increase the thermal resistance, resulting in heat loss during the heat transfer process. The combined effect of these two factors makes the existing technology less efficient in recovering waste heat from cement clinker, and the amount of waste heat recovered is relatively limited. This embodiment is specially invented to solve the above problems.

[0037] See also Figures 1 to 11 The present invention provides a technical solution: a cement clinker cooling waste heat recovery device, comprising an installation platform 11 and a grate cooler body 1 arranged on the installation platform 11, and a grate plate 5 is arranged in the grate cooler body 1, wherein the grate cooler body 1 and the grate plate 5 are both existing technologies, so they are not described in detail. A waste heat recovery box 3 is provided at the right end of the grate cooler body 1, into which materials can be transported through the grate plate 5. Therefore, when the cement clinker falls from the grate plate 5, it will enter the waste heat recovery box 3. A material barrel 7 that can be shaken is provided inside the waste heat recovery box 3, and a material spiral plate 9 that can prompt the crushed material to move spirally downward is provided in the material barrel 7. The lower surface of the material spiral plate 9 is fixedly connected with a heat The heat collecting spiral groove plate 8 is provided with a groove of the same shape as the heat collecting spiral groove plate 8 on the upper surface, and the inner bottom surface of the heat collecting spiral groove plate 8 is provided with a plurality of dividing spiral plates 16 that can evenly divide the groove on the upper surface of the heat collecting spiral groove plate 8 into a plurality of flow channels, wherein the number of dividing spiral plates 16 is 3, so the flow channels are 4, and each flow channel is provided with a plurality of rotating parts that can rotate by liquid flow, and the upper surface of the material spiral plate 9 is provided with a plurality of dial plates 10 that can rotate and rotate intermittently, wherein a support column 36 is fixedly connected to the center of the inner bottom surface of the material barrel 7, and the heat collecting spiral groove plate 8 and the material spiral plate 9 are both mounted on the support column 36.

[0038] See also Figure 2 , a crushing component 4 capable of crushing the cement clinker falling from the grate plate 5 is provided on the upper part of the left side of the waste heat recovery box 3, wherein the crushing component 4 is a prior art and therefore will not be described in detail, and a discharge port at the bottom end of the crushing component 4 is provided with a connecting hose 15 whose one end is connected to the feed port at the top end of the material barrel 7, a vibration motor 6 is provided at the right end of the upper surface of the material barrel 7, and a plurality of first springs 12 are evenly provided on the lower surface of the material barrel 7, one end of which is fixedly connected to the bottom surface of the waste heat recovery box 3;

[0039] The setting of the connecting hose 15 can guide the crushed cement clinker to smoothly enter the material barrel 7 and naturally fall onto the material spiral plate 9. At the same time, once the vibration motor 6 starts working, it will drive the material barrel 7 to produce regular vibrations in the waste heat recovery box 3. This vibration effect is significant and can ensure that the cement clinker moves downward in a spiral along the upper surface of the material spiral plate 9 at a uniform speed. What is particularly critical is that the connecting hose 15, while ensuring that the cement clinker falls completely into the material barrel 7, will not hinder the normal shaking of the material barrel 7, thus achieving efficient coordination between material transportation and equipment operation.

[0040] At the right bottom end of the material barrel 7, there is a discharge port, which is connected to a discharge plate, one end of which extends to the outside of the waste heat recovery box 3. In this way, the cement clinker falling from the bottom end of the material spiral plate 9 can flow smoothly out of the waste heat recovery box 3 along the discharge port through the discharge plate.

[0041] See also Figure 2 , the top and bottom ends of the heat collection spiral groove plate 8 are both provided with a hard tube 13 with one end extending therein, and the end of the hard tube 13 away from the heat collection spiral groove plate 8 is fixedly connected to a hose 14 with one end extending to the outside of the waste heat recovery box 3, and the end of the hard tube 13 extending into the heat collection spiral groove plate 8 is provided with a plurality of openings corresponding to the flow channels one by one;

[0042] The hose 14 connected to the top of the heat collection spiral groove plate 8 passes through the rear side of the waste heat recovery tank 3; the hose 14 at its bottom passes through the bottom left side of the waste heat recovery tank 3. Normal temperature water flows from the hose 14 at the top of the heat collection spiral groove plate 8 into the groove of the heat collection spiral groove plate 8. After sufficient heat exchange with the waste heat, it is converted into high-temperature water and then flows out of the hose 14 at the bottom of the heat collection spiral groove plate 8. In this way, the high-temperature water that has completed the heat exchange can be transmitted to the outside world and used as domestic water or to meet various other water needs.

[0043] Normal-temperature water flows within the heat-collecting spiral groove plate 8, directly contacting the material spiral plate 9. According to the principles of heat transfer, heat transfer occurs when objects with a temperature difference come into contact. This direct contact greatly increases the effective area for heat transfer.

[0044] Unlike existing waste heat recovery methods where the heat transfer pipe is bonded to the underside of a heat transfer plate, this design avoids the indirect process where heat is first transferred through the heat transfer plate to the heat transfer pipe, and finally to the water within the pipe, thereby reducing thermal resistance. According to Fourier's law, the increased contact area and reduced thermal resistance significantly increase the heat transfer rate, thereby significantly improving heat transfer efficiency. This also effectively improves cement clinker waste heat recovery and increases the amount of waste heat recovered, addressing the shortcomings of existing technologies.

[0045] Example 2

[0046] The above-mentioned embodiments do solve the problems of low efficiency and limited recovery of cement clinker waste heat in the prior art to a certain extent. However, in the actual operation process, it was found that cement clinker is prone to clustering on the material spiral plate 9. From the perspective of the movement characteristics of granular materials, when cement clinker falls from the crushing component 4 to the material spiral plate 9, on the one hand, since the cement clinker does not enter the crushing component 4 evenly, it is difficult for the cement clinker particles to be evenly distributed on the material spiral plate 9. On the other hand, the structure and working state of the material spiral plate 9 itself also have a significant impact on the clinker distribution. During the vibration of the material spiral plate 9, friction between the clinker particles and the surface of the spiral plate continues to be generated, and the particles also collide frequently. Under these mechanical effects, the initially unevenly distributed clinker particles further squeeze and aggregate with each other, and eventually gradually form a pile-like structure on the material spiral plate 9, which greatly hinders the uniform dissipation and efficient recovery of heat in the subsequent waste heat recovery process.

[0047] When cement clinker is piled up, the clinker inside the pile is tightly wrapped, and the contact area with the outside world is greatly reduced. According to the principles of heat conduction and heat convection, heat transfer needs to be achieved through contact between objects and the flow of media. The pile-up makes it difficult for the heat of the internal clinker to be transferred to the material spiral plate through heat conduction, and it is also impossible to effectively dissipate the heat through heat convection of the surrounding air. Therefore, during the downward movement of the clinker spiral, the heat of the piled part cannot be normally dissipated and recovered, thereby reducing the efficiency and recovery volume of the entire waste heat recovery system. This embodiment is specially invented to solve the above problems.

[0048] See also Figures 1 to 8 On the basis of the above embodiment, a technical solution is adopted: a support barrel 19 having one end penetrating the material spiral plate 9 is fixedly connected to the lower surface of the dial plate 10, the support barrel 19 is rotatably connected to the material spiral plate 9, and the bottom end of the support barrel 19 is rotatably connected to the inner bottom surface of the heat collection spiral groove plate 8, and a return torsion spring 18 having one end arranged on the inner bottom surface of the heat collection spiral groove plate 8 is provided at the bottom end of the support barrel 19;

[0049] When the support barrel 19 is subjected to an external force, it rotates. During this process, the support barrel 19, by virtue of its own structural connection characteristics, drives the connected shift plate 10 to rotate synchronously. At the same time, the setting of the reset torsion spring 18 plays a key role. According to the mechanical properties of the torsion spring, when the support barrel 19 rotates, the reset torsion spring 18 undergoes elastic deformation and stores elastic potential energy. When the external force is less than the elastic potential energy of the reset torsion spring 18, the reset torsion spring 18 releases the stored elastic potential energy, causing the support barrel 19 to rotate back to its initial position, thereby driving the shift plate 10 to rotate together, realizing a cyclical motion process.

[0050] See also Figures 4 to 8The rotating component includes a mounting cylinder 17 rotatably connected at one end to the inner bottom surface of the heat collection spiral groove plate 8. The top of the mounting cylinder 17 is provided with a plurality of driving arc plates 32 that can rotate with the mounting cylinder 17. The top of the inner circumference of the mounting cylinder 17 is fixedly connected to a driving ring 30. The middle part of the outer circumference of the support barrel 19 is fixedly connected to a driven ring 31. The inner circumference of the driving ring 30 is provided with a limiting component at one end that can be clamped in the driven ring 31.

[0051] A connecting block 24 is fixedly connected to the top of the outer circumference of the mounting tube 17, wherein the number of connecting blocks 24 is multiple, and the end of the connecting block 24 away from the mounting tube 17 is fixedly connected to the connecting tube 22. The outer circumference of the connecting tube 22 is evenly fixedly connected to multiple auxiliary connecting plates 21, and the ends of the multiple auxiliary connecting plates 21 away from the connecting tube 22 are respectively fixedly connected to the corresponding driving arc plates 32;

[0052] When water flows in the flow channel, the water flow will have an impact on the driving arc plate 32. Due to the connection setting of the auxiliary connecting plate 21, when the driving arc plate 32 is rotated by the impact of the water flow, it can drive the connecting cylinder 22 to rotate synchronously. At the same time, thanks to the connection effect of the connecting block 24, the rotation of the connecting cylinder 22 can further prompt the installation cylinder 17 to rotate synchronously. During the rotation of the installation cylinder 17, the driven ring 31 can be driven to rotate through the transmission effect of the limiting component. When the driven ring 31 rotates, the power it generates can prompt the support barrel 19 to rotate accordingly. In this way, a rotation system is formed in which the components are driven by the impact of water flow and work together.

[0053] The limiting component includes a limiting post 35 with one end slidingly connected to the driving ring 30, and a third spring 34 is fixedly connected to the end of the limiting post 35 away from the driven ring 31. Two limiting grooves 23 are formed on the outer circumference of the driven ring 31 in opposite directions.

[0054] A mounting groove is provided on the inner side of the drive ring 30. One end of the limiting post 35 slides smoothly into the mounting groove. It is worth noting that the size and shape of the limiting groove 23 are designed to be highly compatible with the limiting post 35. The two complement each other, ensuring that when the mechanical structure is in operation, the limiting post 35 can precisely fit the limiting groove 23 while sliding within the mounting groove, ensuring the accuracy and stability of the relative movement of all components.

[0055] When the driving ring 30 begins to rotate, the limiting post 35 connected to it will be driven to rotate synchronously. At the same time, the limiting groove 23 and the limiting post 35 cooperate with each other. According to the constraint transmission theory of mechanical structure, the rotation of the limiting post 35 causes the driven ring 31 to rotate together through this constraint relationship. During this process, the return torsion spring 18 will store elastic potential energy when it is twisted under force according to Hooke's law. When the driven ring 31 drives the support barrel 19 to rotate together, the return torsion spring 18 is continuously twisted, and the elastic potential energy stored in it also increases accordingly.

[0056] As the limiting post 35 drives the driven ring 31 to rotate continuously, the limiting post 35 will gradually move into the driving ring 30 due to the gradually increasing reverse torque of the return torsion spring 18. During this process, the limiting post 35 will compress the third spring 34. When the limiting post 35 slides out of the limiting groove 23, the connection state between the driven ring 31 and the limiting post 35 changes from a snap connection to a resistance connection. At this time, under the action of the elastic potential energy released by the return torsion spring 18, the driven ring 31 can rotate and reset according to the law of conservation of energy, thereby causing the dial plate 10 to exhibit intermittent rotation and rotation on the material spiral plate 9, and when the limiting post 35 is snapped into the limiting groove 23 again, the above-mentioned action will be repeated;

[0057] As the paddle 10 rotates and swivels, based on the dynamic principles of material handling and dispersion, it can exert force on the material on the material spiral plate 9, effectively breaking up the accumulated cement clinker. Furthermore, the rotation and swivel of the paddle 10 promotes a more uniform flow of cement clinker on the material spiral plate 9. From the perspective of heat exchange theory, the more evenly distributed the material, the greater its contact area with the surrounding environment or heat exchange medium, and the higher the heat exchange efficiency. Therefore, this movement of the paddle 10 can significantly increase the heat exchange efficiency of cement clinker during the waste heat recovery process, improving the performance of the entire system.

[0058] At the same time, the rotation of the paddle 10 also changes the original movement trajectory of the cement clinker, preventing it from sliding down along a single, fixed path. The movement of the cement clinker becomes more complex and disordered, allowing it to be more fully distributed on the material spiral plate 9, avoiding localized accumulation or poor flow. This increases the contact area and contact opportunities with the material spiral plate 9, allowing more heat to be transferred from the cement clinker to the room-temperature water, further improving the heat exchange effect.

[0059] Example 3

[0060] In the above embodiment, the rotation of the paddle 10 effectively disrupts the gradually formed heaped cement clinker structure on the material spiral plate 9. Based on the theory of fluid dynamics and the movement of bulk materials, the rotation of the paddle 10 makes the cement clinker's movement more complex and disordered, thereby more evenly distributing it on the material spiral plate 9 and avoiding localized accumulation or poor flow. This helps improve the efficiency of the entire heat exchange process: heat is transferred from the cement clinker to the material spiral plate 9, and then from the material spiral plate 9 to the ambient temperature water in the contacting heat collection spiral groove plate 8.

[0061] However, according to the principles of heat transfer, when the room-temperature water in the flow channel contacts the material spiral plate 9, a thermal boundary layer forms near the contact surface. Within this thermal boundary layer, the fluid's temperature gradient is large, increasing thermal resistance, significantly impacting the efficiency of heat transfer from the material spiral plate 9 to the room-temperature water. Furthermore, due to variations in flow velocity distribution and uneven heat exchange as the room-temperature water flows within the flow channel, temperature stratification can also occur according to thermal stratification theory. This phenomenon, in other words, water temperatures differ at different heights or locations within the flow channel, further reducing the uniformity and overall efficiency of heat exchange. This embodiment was developed to address these issues.

[0062] See also Figures 1 to 9 On the basis of the above embodiment, the technical solution adopted is as follows: a growth arc plate 26 having one end that can be pulled outward is inserted into the lower surface of the driving arc plate 32, a driving column 20 is slidably connected in the support barrel 19, and a second spring 29 having one end arranged on the inner bottom surface of the support barrel 19 is fixedly connected to the bottom end of the driving column 20. Therefore, when the driving column 20 slides downward, the second spring 29 can be compressed. Two limit blocks 28 are fixedly connected to the middle part of the circumference of the driving column 20 in opposite directions. The end of the limit block 28 away from the driving column 20 passes through the support barrel 19 and is clamped in the driven cylinder 27. An annular limit groove is provided on the upper part of the inner circumference of the driven cylinder 27, and one end of the limit block 28 is clamped in the annular limit groove.

[0063] The support barrel 19 has a first stopper opening in the middle that mates with a stopper block 28. As the drive column 20 slides up and down within the support barrel 19, it drives the stopper block 28 to move synchronously up and down within the first stopper opening. Because one end of the stopper block 28 engages the annular stopper groove, its up and down movement in turn pushes the driven barrel 27 up and down within the support barrel 19. Furthermore, the annular stopper groove's annular structure allows the driven barrel 27 to rotate freely and unaffected during this movement.

[0064] See also Figures 4 to 7, a soft plate 33 is provided at the bottom end of the dial plate 10. The interior of the soft plate 33 is hollow, and one end of the soft plate 33 is connected to the support barrel 19. Therefore, when the soft plate 33 is squeezed, the air inside it will be squeezed into the support barrel 19. The outer circumference of the driven cylinder 27 is evenly fixedly connected with a plurality of connecting rods 25, one end of which is respectively fixedly connected to the corresponding growth arc plate 26. A plurality of second limiting openings are evenly opened in the middle of the mounting cylinder 17, and the plurality of connecting rods 25 are respectively slidably connected in the corresponding limiting openings.

[0065] When the paddle 10 drives the soft plate 33 to rotate together, since the upper surface of the material spiral plate 9 has a certain slope, the bottom end of the soft plate 33 will conflict with the upper surface of the material spiral plate 9 during the rotation process. For example, when the maximum rotation angle of the paddle 10 is 90 degrees, Figure 4 As shown, the soft plate 33 rotates to a 45-degree position. At this time, the end of the lower surface of the soft plate 33 away from the support barrel 19 just contacts the material spiral plate 9, while there is a gap between the rest of the lower surface of the soft plate 33 and the surface of the material spiral plate 9. In this situation, whether the soft plate 33 continues to rotate or turns back, it will be squeezed.

[0066] In this situation, the air in the soft plate 33's cavity is squeezed and forced into the support barrel 19. This air pushes the drive column 20 downward, which in turn drives the driven cylinder 27 downward via the stopper 28. As the driven cylinder 27 moves up and down, it drives the growing arc plate 26 synchronously with it, thanks to the connection arrangement of the connecting rod 25.

[0067] See also Figures 6 to 9 , the inner side of the driving arc plate 32 is fixedly connected with an elastic arc plate 37, and the side of the elastic arc plate 37 that fits with the growth arc plate 26 is a slope;

[0068] When the growth arc plate 26 is pulled downward from the driving arc plate 32, the outer surface of the elastic arc plate 37 forms a slope (because the water in the flow channel squeezes the elastic arc plate 37). According to the principles of elastic mechanics, the elastic arc plate 37 has a certain elastic deformation capacity. As the growth arc plate 26 is pulled out, its shape changes to form a slope structure.

[0069] The rotation of the multiple drive arc plates 32 effectively disrupts the thermal boundary layer near the contact surface between the material spiral plate 9 and the ambient temperature water. According to boundary layer theory in heat transfer, the presence of a thermal boundary layer increases thermal resistance and hinders heat transfer. The rotation of the drive arc plates 32 causes changes in the flow field, disrupting the laminar flow of the fluid within the boundary layer and significantly improving heat exchange efficiency.

[0070] As the growth arc plate 26 is pulled out, the driving arc plate 32 and the growth arc plate 26 increase the range of agitation of the ambient temperature water in the flow channel. The principles of fluid dynamics indicate that a larger agitation range can enhance the turbulence of the fluid, allowing for more complete mixing between the various components of the ambient temperature water, thereby effectively eliminating the temperature stratification of the ambient temperature water.

[0071] The presence of elastic curved plate 37 causes the room-temperature water in contact with the outer surface of driven cylinder 27 to move downward when growth arc plate 26 is pulled out. This is based on the principle of fluid dynamics that objects influence the movement of fluids. The slope of elastic curved plate 37 changes the force applied to the fluid, guiding the room-temperature water downward. This significantly increases the probability of mixing of room-temperature water at different locations, further enhancing the effect of disrupting temperature stratification in the room-temperature water.

[0072] In summary, when the cement clinker cooling waste heat recovery device is in use, the cement clinker is first conveyed to the waste heat recovery tank 3 via the grate plate 5 within the grate cooler body 1. The cement clinker is crushed by the crushing component 4 and then fed into the material barrel 7 through the connecting hose 15. The material barrel 7 vibrates under the action of the vibration motor 6 and the first spring 12, causing the cement clinker to spiral downward along the material spiral plate 9.

[0073] In Example 1, ambient temperature water flows in through a hose 14 at the top of the heat collection spiral groove plate 8, is separated by a separating spiral plate 16, flows through the flow channel, contacts the material spiral plate 9 for heat exchange, and then flows out through the bottom hose 14. This design improves heat transfer efficiency by increasing the contact area and reducing thermal resistance based on the principles of heat transfer.

[0074] In the second embodiment, the water flow in the flow channel impacts the driving arc plate 32, driving the mounting cylinder 17, connecting cylinder 22, and other components to rotate. The limiting posts 35 engage the limiting grooves 23, driving the driven ring 31, causing the support barrel 19 to rotate, and the shift plate 10 to intermittently rotate and revolve accordingly. This process, based on the principles of material handling and dispersion dynamics, breaks up cement clinker agglomeration, achieves more uniform material distribution, increases heat exchange efficiency, and enhances system performance.

[0075] In the third embodiment, when the paddle 10 rotates, the soft plate 33 is squeezed by the slope of the material spiral plate 9, which then contacts the material spiral plate 9. The air inside the soft plate 33 enters the support barrel 19, pushing the drive column 20, which in turn drives the driven cylinder 27 and the growing arc plate 26 through the stop block 28. The driving arc plate 32 rotates to disrupt the thermal boundary layer, while the growing arc plate 26 is pulled out to increase the stirring range. The elastic arc plate 37 guides the normal temperature water downward. Based on the principles of heat transfer and fluid dynamics, this effectively disrupts the thermal boundary layer and the temperature stratification of the normal temperature water, thereby improving the heat exchange efficiency and performance of the entire waste heat recovery device.

[0076] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0078] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A cement clinker cooling waste heat recovery device, comprising a mounting platform (11) and a grate cooler body (1) disposed thereon, wherein a grate plate (5) is disposed within the grate cooler body (1), characterized in that: The right end of the grate cooler body (1) is provided with a waste heat recovery box (3) into which materials can be transported through a grate plate (5), the interior of the waste heat recovery box (3) is provided with a material barrel (7) that can be shaken, and the material barrel (7) is provided with a material spiral plate (9) that can cause the crushed materials to move spirally downward, the lower surface of the material spiral plate (9) is fixedly connected to a heat collection spiral groove plate (8), the inner bottom surface of the heat collection spiral groove plate (8) is provided with a plurality of dividing spiral plates (16) that can evenly divide the grooves on the upper surface of the heat collection spiral groove plate (8) into a plurality of flow channels, and each flow channel is provided with a plurality of rotating parts that can be rotated by the flow of liquid, and the upper surface of the material spiral plate (9) is provided with a plurality of dial plates (10) that can intermittently rotate and revolve; A crushing component (4) capable of crushing cement clinker dropped from the grate plate (5) is provided on the upper portion of the left side of the waste heat recovery box (3), and a connecting hose (15) having one end connected to the feed port at the top of the material barrel (7) is provided at the discharge port at the bottom end of the crushing component (4). A vibration motor (6) is provided at the right end of the upper surface of the material barrel (7), and a plurality of first springs (12) are evenly provided on the lower surface of the material barrel (7), one end of each of which is fixedly connected to the inner bottom surface of the waste heat recovery box (3); The top and bottom ends of the heat collecting spiral groove plate (8) are both provided with a hard tube (13) with one end extending therein, and the end of the hard tube (13) away from the heat collecting spiral groove plate (8) is fixedly connected to a hose (14) with one end extending outside the waste heat recovery box (3), and the end of the hard tube (13) extending into the heat collecting spiral groove plate (8) is provided with a plurality of openings corresponding to the flow channels one by one; The lower surface of the shift plate (10) is fixedly connected to a support barrel (19) having one end penetrating the material spiral plate (9); the support barrel (19) is rotatably connected to the material spiral plate (9); the bottom end of the support barrel (19) is rotatably connected to the inner bottom surface of the heat collection spiral groove plate (8); and the bottom end of the support barrel (19) is provided with a return torsion spring (18) having one end provided on the inner bottom surface of the heat collection spiral groove plate (8); The rotating component comprises a mounting cylinder (17) having one end rotatably connected to the inner bottom surface of the heat collecting spiral groove plate (8); a plurality of driving arc plates (32) are provided at the top end of the mounting cylinder (17) and are capable of rotating along with the mounting cylinder (17); a driving ring (30) is fixedly connected to the top end of the inner circumference of the mounting cylinder (17); a driven ring (31) is fixedly connected to the middle portion of the outer circumference of the supporting barrel (19); and a limiting component is provided on the inner circumference of the driving ring (30) at one end which can be clamped in the driven ring (31).

2. The cement clinker cooling waste heat recovery device according to claim 1, characterized in that: The top end of the outer peripheral surface of the mounting tube (17) is fixedly connected to a connecting block (24), and the end of the connecting block (24) away from the mounting tube (17) is fixedly connected to the connecting tube (22). The outer peripheral surface of the connecting tube (22) is evenly fixedly connected to a plurality of auxiliary connecting plates (21), and the ends of the plurality of auxiliary connecting plates (21) away from the connecting tube (22) are respectively fixedly connected to the corresponding driving arc plates (32).

3. The device for recovering waste heat from cooling cement clinker according to claim 2, characterized in that: The limiting component comprises a limiting column (35) with one end slidably connected to the driving ring (30), and an end of the limiting column (35) away from the driven ring (31) is fixedly connected to a third spring (34), and the outer peripheral surface of the driven ring (31) is provided with two limiting grooves (23) facing each other.

4. The device for recovering waste heat from cooling cement clinker according to claim 3, characterized in that: A growth arc plate (26) having one end that can be pulled outward is inserted into the lower surface of the driving arc plate (32), a driving column (20) is slidably connected in the supporting barrel (19), and a second spring (29) having one end arranged on the inner bottom surface of the supporting barrel (19) is fixedly connected to the bottom end of the driving column (20), and two limit blocks (28) are fixedly connected in opposite directions in the middle of the peripheral surface of the driving column (20), and the end of the limit block (28) away from the driving column (20) passes through the supporting barrel (19) and is clamped in the driven barrel (27), and an annular limit groove is provided on the upper part of the inner peripheral surface of the driven barrel (27), and one end of the limit block (28) is clamped in the annular limit groove.

5. The device for recovering waste heat from cooling cement clinker according to claim 4, characterized in that: A soft plate (33) is provided at the bottom end of the shift plate (10), the interior of the soft plate (33) is hollow, and one end of the soft plate (33) is connected to the support barrel (19), and the outer peripheral surface of the driven cylinder (27) is evenly fixedly connected with a plurality of connecting rods (25) whose one ends are respectively fixedly connected to the corresponding growth arc plates (26), and a plurality of limiting openings are evenly opened in the middle of the mounting cylinder (17), and the plurality of connecting rods (25) are respectively slidably connected in the corresponding limiting openings.

6. The device for recovering waste heat from cooling cement clinker according to claim 5, characterized in that: An elastic arc plate (37) is fixedly connected to the inner side surface of the driving arc plate (32), and the side of the elastic arc plate (37) that abuts against the growth arc plate (26) is a slope.

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