Waste heat conveying structure for waste heat power generation of cement plant

Abstract

The utility model discloses a waste heat conveying structure for cement plant waste heat power generation, which relates to the technical field of waste heat recovery, and comprises a guide pipe, a blow-off pipe and a heat transfer pipe, the blow-off pipe and the heat transfer pipe are fixedly connected to the bottom end of the guide pipe, the blow-off pipe and the heat transfer pipe are communicated with the guide pipe, and the blow-off pipe and the heat transfer pipe are distributed on opposite sides. By means of the sewage discharging mechanism, heat and dust particles at the tail of the kiln enter the guide pipe and are filtered through the filter plate, the dust particles fall onto the surface of the filter plate and the surface of the push plate, the surface of the push plate is designed in an inclined mode, the dust particles can slide onto the surface of the filter plate, and the dust particles are prevented from falling off. And then heat enters from the inlet end of the reversing column and enters the heat transfer pipe from the outlet end of the reversing column, so that heat transfer of the kiln tail is achieved, dust particles are prevented from being accumulated in the guide pipe, and the dust particles are effectively discharged out of the guide pipe through rotation of the reversing column.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat conveying structure used for waste heat power generation in cement plants. Background Art

[0002] Cement plants generate a large amount of waste heat during the production process. This waste heat mainly comes from high-temperature gases emitted from the kiln head and tail. In order to improve energy utilization efficiency and reduce environmental pollution, cement plants usually use waste heat power generation technology to convert this heat into electricity. In this process, the waste heat transfer structure plays a vital role. It is responsible for transferring heat from the production source to the power generation equipment. The design and performance of the waste heat transfer structure directly affect the efficiency and reliability of the entire power generation system.

[0003] However, existing waste heat transfer systems are plagued by several common problems. First, because high-temperature gases often contain large amounts of dust particles, these particles tend to accumulate on the inner walls of the pipes during transport, reducing the inner diameter of the pipes and increasing flow resistance, which in turn affects thermal efficiency. Second, existing cleaning methods are often inefficient and difficult to completely remove accumulated dust within the pipes. This not only increases maintenance complexity but can also lead to unstable system operation. Therefore, a waste heat transfer structure for waste heat power generation in cement plants is needed to address these existing deficiencies. Utility Model Content

[0004] The purpose of the utility model is to provide a waste heat conveying structure for waste heat power generation in cement plants. By setting a sewage discharge mechanism, dust particles are prevented from accumulating inside the guide pipe, and the rotation of the reversing column is utilized to effectively discharge the dust particles from the inside of the guide pipe; by setting a vibration mechanism, the particles adhering to the inner wall of the guide pipe are effectively made to fall to the surface of the filter plate, thereby preventing the inner wall of the guide pipe from thickening and effectively ensuring the flow of hot air.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a waste heat transport structure for waste heat power generation in a cement plant, comprising a guide pipe, a drain pipe and a heat transfer pipe, wherein the drain pipe and the heat transfer pipe are fixedly connected to the bottom end of the guide pipe, and the drain pipe and the heat transfer pipe are both communicated with the guide pipe, and the drain pipe and the heat transfer pipe are distributed on opposite sides, the interior of the guide pipe is movably connected with a reversing column, the interior of the guide pipe is provided with a drain mechanism, and the drain mechanism is connected to the reversing column, the interior of the guide pipe is fixedly connected with a housing block, and the interior of the housing block is provided with a group of symmetrical vibration mechanisms, the vibration mechanism is connected to the drain mechanism, and the interior of the heat transfer pipe is fixedly connected with a grid.

[0007] The utility model is further configured such that the sewage discharge mechanism includes a filter plate, a driving rod and a push plate. The filter plate is fixedly connected to the inside of the guide pipe. The push plates are symmetrically arranged and fixedly connected to the outside of the driving rod. A group of symmetrical through grooves are opened through the filter plate, and the bottom ends of the push plates are respectively blocked by the top ends of the through grooves.

[0008] The utility model is further configured such that the driving rod passes through the center of the filter plate, and the driving rod is movably connected to the filter plate, and the height of the push plate gradually decreases along the radial direction of the filter plate.

[0009] The utility model is further configured such that the driving rod passes through the reversing column and is fixedly connected to the reversing column, the driving rod passes through the bottom end of the guide tube, the bottom end of the guide tube is fixedly connected to a servo motor, and the output end of the servo motor is fixedly connected to the bottom end of the driving rod.

[0010] The present invention is further configured as follows: the vibration mechanism includes a vibration column, a return spring, a connecting rod, a rotary rod, a cam and a gear; the vibration column, return spring, connecting rod, rotary rod, cam and gear are all distributed in an arc-shaped array; the connecting rod is fixedly connected to the tail end of the vibration column; the vibration column and the connecting rod are both movably connected to the interior of the accommodating block; the return springs are respectively sleeved on the outside of the connecting rod; one end of the return spring is fixedly connected to the tail end of the vibration column, and the other end of the return spring is fixedly connected to the interior of the accommodating block; the rotary rod passes through the axis of the cam and the axis of the gear in sequence, and the rotary rod is fixedly connected to the cam and the gear.

[0011] The utility model is further configured such that the cam and the gear are movably connected to the interior of the accommodating block through a rotating rod, and the outer side of the cam is fitted with the tail end of the connecting rod, the shape of the accommodating block is consistent with the shape of the filter plate, and the front end of the vibration column is movably connected to the inner wall of the guide tube.

[0012] The utility model is further configured as follows: the vibration mechanism also includes gear 2, rotary rod 2, synchronous wheel 1, synchronous wheel 2 and synchronous belt; the rotary rod 2 sequentially passes through the axis of gear 2 and the axis of synchronous wheel 2, and the rotary rod 2 is fixedly connected to gear 2 and synchronous wheel 2; the driving rod passes through the axis of the accommodating block, and the driving rod is movably connected to the accommodating block; the driving rod passes through the axis of synchronous wheel 1, and the driving rod is fixedly connected to synchronous wheel 1; the synchronous belt is sleeved on the outside of synchronous wheel 1 and the outside of synchronous wheel 2; the synchronous wheel 1, synchronous wheel 2 and synchronous belt constitute a belt transmission structure.

[0013] The present invention is further configured such that the synchronous wheel 2 and the gear 2 are both movably connected to the interior of the accommodating block via the rotary rod 2, and the gear 1 is meshed with the gear 2.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model provides a sewage discharge mechanism, and the heat and dust particles at the kiln tail enter the interior of the guide pipe and are filtered through the filter plate. The dust particles fall onto the surface of the filter plate and the surface of the push plate. The push plate surface is inclined, which is conducive to the dust particles sliding onto the surface of the filter plate. Then the heat enters through the inlet end of the reversing column and enters the interior of the heat transfer pipe from the outlet end of the reversing column, thereby realizing the heat transfer at the kiln tail and avoiding the accumulation of dust particles inside the guide pipe. The dust particles are effectively discharged from the interior of the guide pipe by the rotation of the reversing column.

[0016] 2. The utility model is provided with a vibration mechanism. Since gear one is engaged with gear two, the cam is driven to rotate around the rotary rod one. The cam presses the connecting rod outward. Under the action of the reset spring, the vibration column is reset, thereby pushing the vibration column to hit the inner wall of the guide pipe. The action of multiple vibration columns effectively makes the particles adhered to the inner wall of the guide pipe fall to the surface of the filter plate, avoiding the thickening of the inner wall of the guide pipe and effectively ensuring the flow of hot air. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the guide tube of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the sewage discharge mechanism and the vibration mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the vibration mechanism of the utility model;

[0022] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0023] In the figure: 1. guide pipe; 2. drain pipe; 3. heat transfer pipe; 4. reversing column; 5. drain mechanism; 501. filter plate; 502. drive rod; 503. push plate; 6. accommodating block; 7. vibration mechanism; 701. vibration column; 702. return spring; 703. connecting rod; 704. rotary rod 1; 705. cam; 706. gear 1; 707. gear 2; 708. rotary rod 2; 709. synchronous wheel 1; 710. synchronous wheel 2; 711. synchronous belt; 8. grille; 9. through slot; 10. servo motor. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-5 As shown, the utility model provides a technical solution: a waste heat transport structure for waste heat power generation in a cement plant, comprising a guide pipe 1, a drain pipe 2 and a heat transfer pipe 3, the drain pipe 2 and the heat transfer pipe 3 are fixedly connected to the bottom end of the guide pipe 1, and the drain pipe 2 and the heat transfer pipe 3 are both communicated with the guide pipe 1, the drain pipe 2 and the heat transfer pipe 3 are distributed on opposite sides, the interior of the guide pipe 1 is movably connected with a reversing column 4, the interior of the guide pipe 1 is provided with a drain mechanism 5, and the drain mechanism 5 is connected to the reversing column 4, the interior of the guide pipe 1 is fixedly connected with a receiving block 6, and the interior of the receiving block 6 is provided with a group of symmetrical vibration mechanisms 7, the vibration mechanism 7 is connected to the drain mechanism 5, and the interior of the heat transfer pipe 3 is fixedly connected with a grille 8.

[0026] The end of the guide pipe 1 is connected to the cement kiln mouth and the cement kiln tail, and the heat and dust particles at the kiln tail enter the interior of the guide pipe 1.

[0027] like Figure 1-3As shown, the sewage discharge mechanism 5 includes a filter plate 501, a driving rod 502 and a push plate 503. The filter plate 501 is fixedly connected to the inside of the guide pipe 1. The push plates 503 are symmetrically arranged and are fixedly connected to the outside of the driving rod 502. The filter plate 501 is provided with a group of symmetrical through grooves 9. The bottom ends of the push plates 503 are respectively blocked by the top ends of the through grooves 9. The driving rod 502 passes through the center of the filter plate 501 and is movably connected to the filter plate 501. The height of the push plate 503 gradually decreases along the radial direction of the filter plate 501. The driving rod 502 passes through the reversing column 4 and is fixedly connected to the reversing column 4. The driving rod 502 passes through the bottom end of the guide pipe 1. The bottom end of the guide pipe 1 is fixedly connected to the servo motor 10, and the output end of the servo motor 10 is fixedly connected to the bottom end of the driving rod 502.

[0028] The heat and dust particles at the tail of the kiln enter the interior of the guide pipe 1 and are filtered through the filter plate 501. The dust particles fall onto the surface of the filter plate 501 and the surface of the push plate 503. The surface of the push plate 503 is designed to be inclined, which is conducive to the dust particles sliding onto the surface of the filter plate 501. Then the heat enters through the inlet end of the reversing column 4 and enters the interior of the heat transfer pipe 3 from the outlet end of the reversing column 4, thereby realizing the heat transfer at the tail of the kiln and avoiding the accumulation of dust particles inside the guide pipe 1. The rotation of the reversing column 4 is used to effectively discharge the dust particles from the interior of the guide pipe 1, and the grille 8 is used to filter the hot air again.

[0029] like Figure 1 、 Figure 4 and Figure 5As shown, the vibration mechanism 7 includes a vibration column 701, a return spring 702, a connecting rod 703, a rotary rod 704, a cam 705 and a gear 706. The vibration column 701, the return spring 702, the connecting rod 703, the rotary rod 704, the cam 705 and the gear 706 are all distributed in an arc array. The connecting rod 703 is fixedly connected to the tail end of the vibration column 701. The vibration column 701 and the connecting rod 703 are both movably connected to the inside of the receiving block 6. The return spring 702 is respectively sleeved on the connecting rod 70 3, one end of the return spring 702 is fixedly connected to the tail end of the vibration column 701, and the other end of the return spring 702 is fixedly connected to the inside of the receiving block 6, the rotary rod 1 704 passes through the axis of the cam 705 and the axis of the gear 1 706 in sequence, and the rotary rod 1 704 is fixedly connected to the cam 705 and the gear 1 706. The cam 705 and the gear 1 706 are movably connected to the inside of the receiving block 6 through the rotary rod 1 704, and the outer side of the cam 705 is in contact with the tail end of the connecting rod 703. The shape of the receiving block 6 is consistent with the shape of the filter plate 501, and the front end of the vibration column 701 is movably connected to the inner wall of the guide tube 1. The vibration mechanism 7 also includes a gear 2 707, a rotary rod 2 708, a synchronous wheel 1 709, a synchronous wheel 2 710 and a synchronous belt 711. The rotary rod 2 708 passes through the axis of the gear 2 707 and the axis of the synchronous wheel 2 710 in sequence, and the rotary rod 2 708 is fixedly connected to the gear 2 707 and the synchronous wheel 2 710. The driving rod 502 passes through the axis of the receiving block 6, and the driving rod 5 02 is movably connected to the accommodating block 6, the driving rod 502 passes through the axis of the synchronous wheel 1 709, and the driving rod 502 is fixedly connected to the synchronous wheel 1 709, the synchronous belt 711 is sleeved on the outside of the synchronous wheel 1 709 and the outside of the synchronous wheel 2 710, the synchronous wheel 1 709, the synchronous wheel 2 710 and the synchronous belt 711 constitute a belt transmission structure, the synchronous wheel 2 710 and the gear 2 707 are both movably connected to the inside of the accommodating block 6 through the rotating rod 2 708, and the gear 1 706 is meshed with the gear 2 707.

[0030] If dust particles need to be cleaned, the servo motor 10 is started to drive the driving rod 502 to rotate half a circle, and the reversing column 4 rotates at the same time, so that the outlet end of the reversing column 4 is connected to the sewage pipe 2. When the driving rod 502 rotates, it drives the push plate 503 to rotate along the surface of the filter plate 501, thereby pushing the accumulated dust particles into the through groove 9. Subsequently, the dust particles fall to the inner side of the reversing column 4 under the action of their own weight and slide into the interior of the sewage pipe 2. In addition, when the driving rod 502 rotates, it drives the synchronous wheel 709 to rotate, and the synchronous belt Under the action of 711, the synchronous wheel 2 710 and the gear 2 707 rotate synchronously. Since the gear 1 706 is engaged with the gear 2 707, the cam 705 is driven to rotate around the rotating rod 1 704. The cam 705 presses the connecting rod 703 outward. Under the action of the reset spring 702, the vibration column 701 is reset, thereby pushing the vibration column 701 to hit the inner wall of the guide pipe 1. The action of multiple vibration columns 701 effectively makes the particles adhered to the inner wall of the guide pipe 1 fall to the surface of the filter plate 501, avoiding the thickening of the inner wall of the guide pipe 1 and effectively ensuring the flow of hot air.

[0031] Working principle: When in use, first, connect the port of the guide pipe 1 to the cement kiln mouth and the cement kiln tail. The heat and dust particles at the kiln tail enter the interior of the guide pipe 1 and are filtered through the filter plate 501. The dust particles fall onto the surface of the filter plate 501 and the surface of the push plate 503. The surface of the push plate 503 is inclined, which is conducive to the dust particles sliding onto the surface of the filter plate 501. Then the heat enters through the inlet end of the reversing column 4 and enters the interior of the heat transfer pipe 3 from the outlet end of the reversing column 4, thereby realizing the heat transfer at the kiln tail. At the same time, the grille 8 is used to filter the hot air again. If the dust particles need to be cleaned, the servo motor 10 is started to drive the drive rod 502 to rotate half a circle. The reversing column 4 rotates at the same time, so that the outlet end of the reversing column 4 is connected to the sewage pipe 2. The drive rod 502 rotates. At the same time, the push plate 503 is driven to rotate along the surface of the filter plate 501, thereby pushing the accumulated dust particles into the through groove 9. Subsequently, the dust particles fall to the inner side of the reversing column 4 under the action of their own weight and slide into the inside of the sewage pipe 2. In addition, while the driving rod 502 rotates, it drives the synchronous wheel 1 709 to rotate. Under the action of the synchronous belt 711, the synchronous wheel 2 710 and the gear 2 707 rotate synchronously. Since the gear 1 706 is engaged with the gear 2 707, the cam 705 is driven to rotate around the rotating rod 1 704. The cam 705 squeezes the connecting rod 703 outward. Under the action of the reset spring 702, the vibration column 701 is reset, thereby pushing the vibration column 701 to hit the inner wall of the guide pipe 1. The action of multiple vibration columns 701 causes the particles adhered to the inner wall of the guide pipe 1 to fall to the surface of the filter plate 501.

[0032] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0033] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A waste heat transport structure for waste heat power generation in a cement plant, comprising a guide pipe (1), a sewage pipe (2) and a heat transfer pipe (3), characterized in that: The sewage pipe (2) and the heat transfer pipe (3) are both fixedly connected to the bottom end of the guide pipe (1), and the sewage pipe (2) and the heat transfer pipe (3) are both connected to the guide pipe (1). The sewage pipe (2) and the heat transfer pipe (3) are distributed on opposite sides. The guide pipe (1) is movably connected to a reversing column (4). A sewage discharge mechanism (5) is provided inside the guide pipe (1), and the sewage discharge mechanism (5) is connected to the reversing column (4). The guide pipe (1) is fixedly connected to a receiving block (6), and a group of symmetrical vibration mechanisms (7) are provided inside the receiving block (6). The vibration mechanism (7) is connected to the sewage discharge mechanism (5). The heat transfer pipe (3) is fixedly connected to a grid (8).

2. The waste heat transport structure for waste heat power generation in a cement plant according to claim 1, characterized in that: The sewage discharge mechanism (5) comprises a filter plate (501), a driving rod (502) and a push plate (503); the filter plate (501) is fixedly connected to the inside of the guide pipe (1); the push plates (503) are symmetrically arranged and are fixedly connected to the outside of the driving rod (502); a group of symmetrical through grooves (9) are formed through the filter plate (501); the bottom ends of the push plates (503) are respectively blocked by the top ends of the through grooves (9).

3. The waste heat transport structure for waste heat power generation in a cement plant according to claim 2, characterized in that: The driving rod (502) passes through the center of the filter plate (501), and the driving rod (502) is movably connected to the filter plate (501), and the height of the push plate (503) gradually decreases along the radial direction of the filter plate (501).

4. The waste heat transport structure for waste heat power generation in a cement plant according to claim 3, characterized in that: The driving rod (502) passes through the reversing column (4), and the driving rod (502) is fixedly connected to the reversing column (4). The driving rod (502) passes through the bottom end of the guide tube (1), and the bottom end of the guide tube (1) is fixedly connected to a servo motor (10), and the output end of the servo motor (10) is fixedly connected to the bottom end of the driving rod (502).

5. The waste heat transport structure for waste heat power generation in a cement plant according to claim 4, characterized in that: The vibration mechanism (7) comprises a vibration column (701), a return spring (702), a connecting rod (703), a rotary rod (704), a cam (705) and a gear (706), wherein the vibration column (701), the return spring (702), the connecting rod (703), the rotary rod (704), the cam (705) and the gear (706) are all distributed in an arc array, the connecting rod (703) is fixedly connected to the tail end of the vibration column (701), and the vibration column (701) and the connecting rod (703) are connected to each other. ) are movably connected to the inside of the accommodating block (6), the return springs (702) are respectively sleeved on the outside of the connecting rod (703), one end of the return spring (702) is fixedly connected to the tail end of the vibration column (701), and the other end of the return spring (702) is fixedly connected to the inside of the accommodating block (6), the rotating rod (704) passes through the axis of the cam (705) and the axis of the gear (706) in sequence, and the rotating rod (704) is fixedly connected to the cam (705) and the gear (706).

6. The waste heat transport structure for waste heat power generation in a cement plant according to claim 5, characterized in that: The cam (705) and gear one (706) are both movably connected to the interior of the accommodating block (6) via a rotating rod one (704), and the outer side of the cam (705) is in contact with the tail end of the connecting rod (703). The shape of the accommodating block (6) is consistent with that of the filter plate (501), and the front end of the vibration column (701) is movably connected to the inner wall of the guide tube (1).

7. The waste heat transport structure for waste heat power generation in a cement plant according to claim 6, characterized in that: The vibration mechanism (7) further comprises a second gear (707), a second rotating rod (708), a first synchronous wheel (709), a second synchronous wheel (710) and a synchronous belt (711), wherein the second rotating rod (708) sequentially passes through the axis of the second gear (707) and the axis of the second synchronous wheel (710), and the second rotating rod (708) is fixedly connected to the second gear (707) and the second synchronous wheel (710), and the driving rod (502) passes through the receiving block (6) The drive rod (502) is movably connected to the accommodating block (6), the drive rod (502) passes through the axis of the synchronous wheel 1 (709), and the drive rod (502) is fixedly connected to the synchronous wheel 1 (709), the synchronous belt (711) is sleeved on the outer side of the synchronous wheel 1 (709) and the outer side of the synchronous wheel 2 (710), and the synchronous wheel 1 (709), the synchronous wheel 2 (710) and the synchronous belt (711) constitute a belt transmission structure.

8. The waste heat transport structure for waste heat power generation in a cement plant according to claim 7, characterized in that: The synchronous wheel 2 (710) and the gear 2 (707) are both movably connected to the interior of the accommodating block (6) through the rotating rod 2 (708), and the gear 1 (706) is meshed with the gear 2 (707).

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