Cement clinker cooling waste heat recovery device

Abstract

The invention discloses a cement clinker cooling waste heat recovery device, and relates to the technical field of efficient energy-saving industries, in particular to a cement clinker cooling waste heat recovery device which comprises a mounting platform and a grate cooler body arranged on the mounting platform, a grate plate is arranged in the grate cooler body, and a waste heat recovery box capable of conveying materials into the grate cooler body through the grate plate is arranged at the right end of the grate cooler body. According to the cement clinker cooling waste heat recovery device, by constructing a waste heat recovery framework composed of the grate cooler body, the waste heat recovery box, the material barrel, the material spiral plate, the heat collection spiral groove plate and the like, efficient heat transfer is achieved. And the grate cooler body is matched with the grate plate to convey the cement clinker to the waste heat recovery box. The crushing component and the communicating hose guide cement clinker to enter the material barrel and fall on the material spiral plate, the vibration motor and the first spring promote the material barrel to vibrate, and the cement clinker spirally moves downwards 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 specifically, to a cement clinker cooling waste heat recovery device. Background Art

[0002] Cement clinker is a semi-finished product obtained by mixing limestone, clay and iron raw materials in appropriate proportions, burning them until they are partially or completely melted, and cooling them. In the cement industry, the most commonly used silicate cement clinker has calcium oxide, silicon dioxide and a small amount of aluminum oxide and iron oxide as its main chemical components. The main mineral components are tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetracalcium aluminoferrite. After silicate cement clinker is ground with an appropriate amount of gypsum, it becomes silicate cement.

[0003] In the production process of cement clinker, grate coolers are often used to cool high-temperature cement clinker. As the key host equipment in the cement plant clinker burning system, grate coolers are responsible for cooling and conveying cement clinker. They also provide hot air for rotary kilns and decomposition furnaces, and are the core equipment for heat recovery in the burning system. However, when cement clinker is output from the tail of the grate cooler, it still carries a large amount of heat and dissipates it into the environment. According to the second law of thermodynamics, heat always spontaneously transfers from high-temperature objects to low-temperature objects. If this part of the dissipated heat is not effectively utilized, it is undoubtedly a huge 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 rate of heat conduction 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 turn to 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 solution of the present invention is 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 an installation platform and a grate cooler body arranged thereon, and a grate plate is arranged in the grate cooler body, a waste heat recovery box is arranged at the right end of the grate cooler body, into which materials can be transported through the grate plate, a material barrel that can be shaken is arranged inside the waste heat recovery box, and a material spiral plate that can prompt the crushed material to move spirally downward is arranged in the material barrel, a heat collection spiral groove plate is fixedly connected to the lower surface of the material spiral plate, 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 arranged 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 arranged in each flow channel, and a plurality of dial plates that can intermittently rotate and swivel are arranged on the upper surface of the material spiral plate.

[0008] Preferably, a crushing component capable of crushing cement clinker falling from the grate plate is provided on the upper part of the 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 with one end extending therein, and the end of the hard tube away from the heat collection spiral groove plate is fixedly connected to a hose with 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 return 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 of the mounting cylinder is provided with a plurality of driving arc plates which can rotate along with the mounting cylinder, the top 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 circumferential surface 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 circumferential surface 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 comprises a limiting column with one end slidably 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, and a driving column is slidably connected in the support 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 support barrel, and two limit blocks are fixedly connected in the middle of the circumference of the driving column in opposite directions. The end of the limit block away from the driving column passes through the support barrel and is clamped in the driven barrel. An annular limit groove is opened 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 peripheral surface of the driven cylinder is evenly fixedly connected with a plurality of connecting rods whose one ends are respectively fixedly connected to the corresponding growth arc plates, and a plurality of limit openings are evenly opened in the middle part of the mounting cylinder, 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 fits 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] 1. The waste heat recovery device for cement clinker cooling realizes efficient heat transfer by constructing a waste heat recovery structure consisting 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 parts 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. The grooves and the separating spiral plates on the heat collection spiral groove plate form multiple flow channels. Normal temperature water flows in from the top hose, directly contacts with the material spiral plate for heat exchange, and then flows out from the bottom hose. This design avoids the indirect path of heat transfer in the traditional method. According to Fourier's law and the principle of heat transfer, it increases the effective area of ​​heat transfer, reduces thermal resistance, and significantly improves the heat transfer efficiency, thereby effectively improving the waste heat recovery effect of cement clinker and increasing the waste heat recovery amount.

[0020] 2. The waste heat recovery device for cooling cement clinker effectively overcomes obstacles in the heat exchange process by setting up a series of structures such as a paddle plate, a support barrel, a reset torsion spring, a driving arc plate, a growth arc plate, and an elastic arc plate. The paddle 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 to drive a series of components to make the paddle plate intermittently rotate and rotate. 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 mixing normal temperature water 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 It 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 The enlarged structural diagram at A in the middle;

[0024] Figure 4 It is a 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 6It is a schematic diagram of the matching structure of the connecting tube, the auxiliary connecting plate and the driving arc plate of the present invention;

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

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

[0029] Fig. 9 It is a schematic diagram of the matching structure of the driving arc plate, the elastic arc plate and the growth arc plate of the present invention;

[0030] Fig.10 A schematic diagram of a partial cross-sectional structure of a heat collecting spiral groove plate of the present invention when viewed from above;

[0031] Fig.11 It is a schematic structural 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 parts; 5. grate plate; 6. vibration motor; 7. material barrel; 8. heat collection spiral groove plate; 9. material spiral plate; 10. paddle plate; 11. installation platform; 12. first spring; 13. hard pipe; 14. hose; 15. connecting hose; 16. separation spiral plate; 17. installation 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. supporting column; 37. elastic arc plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] In the current waste heat recovery technology of cement clinker, according to the principle of heat conduction, heat will spontaneously transfer from a high-temperature object to a low-temperature object. The most common waste heat recovery method is to attach a pipe to the lower surface of the material plate, and use the circulating water in the pipe to absorb the heat transferred from the cement clinker to the material plate, so as to achieve waste heat recovery.

[0036] However, from the perspective of heat transfer, this prior art has obvious limitations. First, the actual contact area between the pipeline 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 pipeline. 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 prior art in the recovery of cement clinker waste heat relatively inefficient, 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 waste heat recovery device for cooling cement clinker, 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 prior arts, and therefore no further description is given, a waste heat recovery box 3 is arranged at the right end of the grate cooler body 1, into which materials can be transported through the grate plate 5, so 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 arranged inside the waste heat recovery box 3, and a material spiral plate 9 that can cause the crushed material to spirally move downward is arranged in the material barrel 7, and a heat recovery plate 9 is fixedly connected to the lower surface of the material spiral plate 9 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 which 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 the dividing spiral plates 16 is 3, so the flow channels are 4, and each flow channel is provided with a plurality of rotating parts which can rotate by the flow of liquid, and the upper surface of the material spiral plate 9 is provided with a plurality of dial plates 10 which can rotate and revolve 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 arranged on the support column 36.

[0038] See also Figure 2 , a crushing component 4 capable of crushing cement clinker dropped from the grate plate 5 is arranged at 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 arranged at the right end of the upper surface of the material barrel 7, and a plurality of first springs 12 are evenly arranged 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 on the material spiral plate 9. At the same time, once the vibration motor 6 starts working, it will drive the material barrel 7 to vibrate regularly in the waste heat recovery box 3. This vibration effect is significant, and can ensure that the cement clinker moves downward along the upper surface of the material spiral plate 9 at a uniform speed. What is particularly critical is that the connecting hose 15 will not cause any obstruction to the normal shaking of the material barrel 7 while ensuring that the cement clinker falls completely into the material barrel 7, thereby realizing efficient coordination between material transportation and equipment operation;

[0040] At the right bottom end of the material barrel 7, a discharge port is provided, and a discharge plate is connected to the discharge port, and one end of the discharge plate 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 and 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 one 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 outside the waste heat recovery box 3, and one 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 box 3; the hose 14 at its bottom passes through the bottom left side of the waste heat recovery box 3. Normal temperature water flows into the groove of the heat collection spiral groove plate 8 from the hose 14 at the top of the heat collection spiral groove plate 8, and after sufficient heat exchange with the waste heat, it is converted into high temperature water, and then flows out from 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 can be used as domestic water or to meet other diverse water needs;

[0043] The normal temperature water flows in the heat collecting spiral groove plate 8 and directly contacts the material spiral plate 9. According to the heat transfer principle, heat transfer will occur when objects with temperature difference contact each other. This direct contact method greatly increases the effective area of ​​heat transfer.

[0044] Different from the waste heat recovery method in the prior art where the heat-conducting pipe is attached to the lower surface of the heat-conducting plate, this design avoids the indirect process of heat first being transferred to the heat-conducting pipe through the heat-conducting plate and then to the water in the heat-conducting pipe, thereby reducing thermal resistance. According to Fourier's law, the contact area is increased and the thermal resistance is reduced, which significantly increases the heat transfer rate and thus greatly improves the heat transfer efficiency. At the same time, it effectively improves the waste heat recovery effect of cement clinker, increases the waste heat recovery amount, and makes up for the shortcomings of the prior art.

[0045] Embodiment 2

[0046] The above-mentioned embodiments do solve the problems of low efficiency and limited recovery amount of cement clinker waste heat recovery in the prior art to a certain extent. However, it was found in the actual operation process 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 frequently collide with each other. Under these mechanical effects, the initially unevenly distributed clinker particles further squeeze and aggregate 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 internal clinker heat to be transferred to the material spiral plate through heat conduction, and it is also impossible to effectively dissipate the heat by means of heat convection from 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 amount 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, the technical solution adopted is as follows: a support barrel 19 having one end penetrating the material spiral plate 9 is fixedly connected to the lower surface of the paddle plate 10, 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 a return torsion spring 18 having one end arranged on the inner bottom surface of the heat collection spiral groove plate 8 is arranged at the bottom end of the support barrel 19;

[0049] When the support barrel 19 is subjected to an external force, it will rotate. In this process, the support barrel 19 drives the connected dial plate 10 to rotate synchronously by virtue of its own structural connection characteristics. 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 the initial position, thereby driving the dial plate 10 to rotate together, realizing a reciprocating 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 collecting spiral groove plate 8, a plurality of driving arc plates 32 capable of rotating with the mounting cylinder 17 are arranged at the top of the mounting cylinder 17, a driving ring 30 is fixedly connected to the top of the inner circumference of the mounting cylinder 17, a driven ring 31 is fixedly connected to the middle of the outer circumference of the supporting barrel 19, and a limiting component capable of being clamped in the driven ring 31 is arranged at one end of the inner circumference of the driving ring 30;

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

[0052] When the water in the flow channel flows, 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 generated by it can prompt the support barrel 19 to rotate accordingly. In this way, a rotating system driven by the impact of water flow and with the coordinated operation of various components is formed.

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

[0054] An installation groove is provided on the inner side of the driving ring 30. One end of the limiting column 35 is smoothly slidably connected in the installation groove. It is worth mentioning that the size and shape of the limiting groove 23 are designed to be highly adapted to the limiting column 35. The two complement each other to ensure that when the mechanical structure is running, the limiting column 35 can accurately fit the limiting groove 23 while sliding in the installation groove, thereby ensuring the accuracy and stability of the relative movement of various components;

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

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

[0057] When the paddle 10 rotates and turns, according to the dynamic principle of material handling and dispersion, the paddle 10 can exert force on the material on the material spiral plate 9, effectively destroying the piled cement clinker. In addition, the rotation and turning 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 uniform the material distribution, the larger the 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 greatly increase the heat exchange efficiency of cement clinker during the waste heat recovery process, and improve the working performance of the entire system;

[0058] At the same time, the rotation of the paddle 10 will also change the original movement trajectory of the cement clinker, so that it will not slide down along a single, fixed route. The movement of the cement clinker becomes more complex and disordered, and can be more fully distributed on the material spiral plate 9, avoiding local accumulation or poor flow, thereby increasing the contact area and contact opportunity 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] Embodiment 3

[0060] In the above embodiment, the rotation of the paddle 10 can effectively destroy the piled cement clinker structure gradually formed on the material spiral plate 9. According to the theory of fluid dynamics and bulk material movement, the rotation of the paddle 10 makes the movement of cement clinker more complex and disordered, so that it can be more evenly distributed on the material spiral plate 9 to avoid local accumulation or poor flow. This helps to improve the efficiency of the entire heat transfer process during the heat exchange process, in which heat is transferred from cement clinker to the material spiral plate 9, and then from the material spiral plate 9 to the normal temperature water in the heat collection spiral groove plate 8 in contact with it.

[0061] However, according to the principle of heat transfer, when the normal temperature water in the flow channel contacts the material spiral plate 9, a thermal boundary layer will be formed near the contact surface. In the thermal boundary layer, the temperature gradient of the fluid is large and the thermal resistance increases, which will significantly affect the efficiency of heat transfer from the material spiral plate 9 to the normal temperature water. At the same time, due to the difference in flow velocity distribution and the unevenness of heat exchange when the normal temperature water flows in the flow channel, according to the thermal stratification theory, temperature stratification will also occur, that is, the water temperature at different heights or positions in the flow channel is different, which further reduces the uniformity and overall efficiency of heat exchange. This embodiment is specially invented to solve the above problems.

[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, 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, so that when the driving column 20 slides downward, the second spring 29 can be compressed, and two limit blocks 28 are fixedly connected in opposite directions in the middle of the peripheral surface of the driving column 20, one 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 peripheral surface of the driven cylinder 27, and one end of the limit block 28 is clamped in the annular limit groove;

[0063] The middle of the support barrel 19 is provided with a first limiting opening adapted to the limiting block 28. When the driving column 20 slides up and down in the support barrel 19, it will drive the limiting block 28 to move up and down synchronously in the first limiting opening. Since one end of the limiting block 28 is inserted into the annular limiting groove, its up and down movement will further push the driven cylinder 27 to move up and down on the support barrel 19. Since the annular limiting groove is annular in structure, the driven cylinder 27 can still rotate freely without being affected during the up and down movement.

[0064] See also Figures 4 to 7, a soft plate 33 is provided at the bottom end of the paddle 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, so when the soft plate 33 is squeezed, the air inside it will be squeezed into the support barrel 19, and the outer circumference 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 the middle part of the installation cylinder 17 is evenly opened with a plurality of second limiting openings, 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. Figure 4 As shown, the soft plate 33 rotates to a position of 45 degrees, at which 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, and there is a gap between the other parts of the lower surface of the soft plate 33 and the surface of the material spiral plate 9. In this case, whether the soft plate 33 continues to rotate or turns back, it will be squeezed.

[0066] Based on the above situation, the soft plate 33 is in a squeezed state, and the air in its cavity will be pressed into the support barrel 19. The air entering the support barrel 19 will push the driving column 20 to move downward, and the driving column 20 will then drive the driven cylinder 27 to move downward together through the limit block 28. When the driven cylinder 27 moves up and down, with the help of the connection setting of the connecting rod 25, it can drive the growth arc plate 26 to move synchronously.

[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 an inclined surface;

[0068] When the growth arc plate 26 is pulled downward from the driving arc plate 32, the outer side surface of the elastic arc plate 37 will form a slope (because the water in the flow channel will squeeze the elastic arc plate 37). According to the principle of elastic mechanics, the elastic arc plate 37 has a certain elastic deformation ability, and during the process of pulling out the growth arc plate 26, its shape changes to form a slope structure.

[0069] When the multiple driving arc plates 32 rotate, they can effectively destroy the thermal boundary layer near the contact surface between the material spiral plate 9 and the normal temperature water. According to the boundary layer theory in heat transfer, the existence of the thermal boundary layer will increase thermal resistance and hinder heat transfer. The rotation of the driving arc plates 32 causes the flow field to change, disrupting the laminar state of the fluid in the boundary layer, greatly improving the 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 stirring range of the normal temperature water in the flow channel. The principle of fluid dynamics shows that a larger stirring range can enhance the turbulence of the fluid, making the mixing between the various parts of the normal temperature water more complete, thereby effectively destroying the temperature stratification phenomenon of the normal temperature water;

[0071] By setting the elastic arc plate 37, when the growth arc plate 26 is pulled out, the normal temperature water in contact with the outer side of the driven cylinder 27 will have a tendency to move downward. This is based on the principle of the influence of objects on the movement of fluids in fluid mechanics. The slope structure of the elastic arc plate 37 changes the force of the fluid, guides the normal temperature water to flow downward, greatly increases the probability of mixing of normal temperature water at different positions, and further strengthens the effect of destroying the temperature stratification of normal temperature water.

[0072] In summary, when the cement clinker cooling waste heat recovery device is used, the cement clinker is first transported to the waste heat recovery box 3 through the grate plate 5 in the grate cooler body 1. After the cement clinker is crushed by the crushing component 4, it is sent to 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, so that the cement clinker moves downward along the material spiral plate 9 in a spiral.

[0073] In the first embodiment, normal temperature water flows in from the hose 14 at the top of the heat collection spiral groove plate 8, flows in the flow channel after being separated by the separation spiral plate 16, and flows out from the bottom hose 14 after contacting with the material spiral plate 9 for heat exchange. This design improves the heat transfer efficiency according to the principle of heat transfer by increasing the contact area and reducing the thermal resistance.

[0074] In the second embodiment, the water flow in the flow channel impacts the driving arc plate 32, driving the installation cylinder 17, the connecting cylinder 22 and other components to rotate, and the limiting column 35 cooperates with the limiting groove 23 to drive the driven ring 31, so that the support barrel 19 rotates, and the paddle 10 rotates and turns intermittently. This process destroys the cement clinker agglomeration according to the material handling and dispersion dynamics principle, makes the material distribution more uniform, increases the heat exchange efficiency, and improves the system performance.

[0075] In the third embodiment, when the paddle 10 rotates, the soft plate 33 is squeezed due to the inclination of the material spiral plate 9 and the material spiral plate 9, and the air inside it enters the support barrel 19 to push the driving column 20, and drives the driven cylinder 27 and the growth arc plate 26 to move through the limit block 28. The driving arc plate 32 rotates to destroy the thermal boundary layer, the growth arc plate 26 is pulled out to increase the stirring range, and the elastic arc plate 37 guides the normal temperature water to flow downward. According to the principles of heat transfer, fluid dynamics, etc., the thermal boundary layer and the temperature stratification of normal temperature water are effectively destroyed, and the heat exchange efficiency and performance of the entire waste heat recovery device are improved.

[0076] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0077] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope 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) arranged thereon, wherein a grate plate (5) is arranged inside 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 shake, and the material barrel (7) is provided with a material spiral plate (9) that can cause the crushed material to move spirally downward, the lower surface of the material spiral plate (9) is fixedly connected with 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 rotate 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.

2. A cement clinker cooling waste heat recovery device according to claim 1, characterized in that: A crushing component (4) capable of crushing cement clinker dropped from the grate plate (5) is arranged at the upper part of the left side of the waste heat recovery box (3), and a connecting hose (15) having one end connected to the top feed port of the material barrel (7) is arranged at the discharge port at the bottom end of the crushing component (4). A vibration motor (6) is arranged at the right end of the upper surface of the material barrel (7), and a plurality of first springs (12) are evenly arranged on the lower surface of the material barrel (7), each of which has one end fixedly connected to the inner bottom surface of the waste heat recovery box (3).

3. A cement clinker cooling waste heat recovery device according to claim 2, characterized in that: 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.

4. A cement clinker cooling waste heat recovery device according to claim 3, characterized in that: The lower surface of the shifting plate (10) is fixedly connected to a support barrel (19) whose end passes through 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) whose end is arranged on the inner bottom surface of the heat collection spiral groove plate (8).

5. A cement clinker cooling waste heat recovery device according to claim 4, characterized in that: 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 arranged at the top end of the mounting cylinder (17) and are capable of rotating together 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 part of the outer circumference of the support barrel (19); and a limiting component is arranged at one end of the inner circumference of the driving ring (30) and is capable of being clamped in the driven ring (31).

6. A cement clinker cooling waste heat recovery device according to claim 5, characterized in that: A connection block (24) is fixedly connected to the top end of the outer peripheral surface of the installation tube (17); an end of the connection block (24) away from the installation tube (17) is fixedly connected to the connection tube (22); a plurality of auxiliary connection plates (21) are evenly fixedly connected to the outer peripheral surface of the connection tube (22); and ends of the plurality of auxiliary connection plates (21) away from the connection tube (22) are respectively fixedly connected to corresponding driving arc plates (32).

7. A cement clinker cooling waste heat recovery device according to claim 6, characterized in that: The limiting component comprises a limiting column (35) with one end slidably connected to the driving ring (30); the 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) opposite to each other.

8. The device for recovering waste heat from cooling cement clinker according to claim 7, characterized in that: A growth arc plate (26) whose end can be pulled outward is inserted into the lower surface of the driving arc plate (32); a driving column (20) is slidably connected inside the supporting barrel (19); 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); two limit blocks (28) are fixedly connected in opposite directions to the middle of the circumference of the driving column (20); one 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); an annular limit groove is provided on the upper part of the inner circumference of the driven barrel (27), and one end of the limit block (28) is clamped in the annular limit groove.

9. A cement clinker cooling waste heat recovery device according to claim 8, characterized in that: A soft plate (33) is provided at the bottom end of the shifting plate (10), the interior of the soft plate (33) is hollow, and one end of the soft plate (33) is connected to the supporting barrel (19); a plurality of connecting rods (25) are evenly fixedly connected to the outer peripheral surface of the driven cylinder (27), one end of which is respectively fixedly connected to the corresponding growth arc plate (26); 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.

10. A cement clinker cooling waste heat recovery device according to claim 9, characterized in that: The inner side surface 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 is in contact with the growth arc plate (26) is an inclined surface.

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