Garbage power generation waste heat recovery device

Abstract

The utility model discloses a waste heat recovery device for garbage power generation, and belongs to the technical field of garbage power generation. A garbage power generation waste heat recovery device comprises a bottom plate, a heat exchange box is fixed to the upper end of the bottom plate, a heat exchange pipe is arranged in the heat exchange box, a filter box with the upper end and the lower end opened is arranged on one side of the heat exchange box, an air inlet pipe and an air outlet pipe are arranged on the two sides of the filter box respectively, and the air outlet pipe is communicated with the heat exchange pipe; the filter box is provided with a filter assembly, the filter assembly comprises a fixing frame fixed at the upper end of the bottom plate, the fixing frame is provided with an upper cover plate and a lower cover plate which can synchronously and reversely slide in the vertical direction, and the upper end and the lower end of the filter box can be plugged respectively; a filter plate is arranged at the lower end of the upper cover plate, and when the upper cover plate and the lower cover plate block the upper end and the lower end of the filter box respectively, the lower end face of the filter plate is in contact with the lower cover plate. Particulate matters in the tail gas are filtered and intercepted before the tail gas enters the heat exchange pipe, so that the situation that a large amount of particulate matters enter the heat exchange pipe to cause blockage and influence the heat exchange effect is avoided; in addition, the upper cover plate and the lower cover plate are controlled to be away from the filter box at the same time, and particulate matter on the filter plate and the lower cover plate can be conveniently cleaned.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste power generation, and particularly relates to a waste power generation waste heat recovery device. Background Art

[0002] In people's daily life, a large amount of garbage will inevitably be generated. Incineration is one of the main ways to deal with garbage. However, in the process of incinerating garbage, it will cause waste of resources and energy; waste power plants can recover the energy of garbage and reduce energy waste; the waste gas after incineration in waste power plants is usually discharged to the outside directly after being treated. Since there is a large amount of heat energy in the waste gas, not recovering it will not only affect the environment but also cause energy waste.

[0003] In waste power plants, heat exchange tubes in heat exchange devices are usually used to recover the waste heat in the waste gas. However, because there are some solid particles in the waste gas, the heat exchange tubes will be blocked, thus affecting the waste gas recovery effect; for this reason, a waste power generation waste heat recovery device is proposed. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a waste power generation waste heat recovery device, which solves the problems in the prior art.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A waste power generation waste heat recovery device includes a bottom plate. A heat exchange box is fixed at the upper end of the bottom plate. Heat exchange tubes are arranged in the heat exchange box. A filter box with both upper and lower ends open is arranged on one side of the heat exchange box. An air inlet pipe and an air outlet pipe are respectively arranged on both sides of the filter box. The air outlet pipe is communicated with the heat exchange tubes.

[0007] A filter component is arranged on the filter box. The filter component includes a fixed frame fixed at the upper end of the bottom plate. An upper cover plate and a lower cover plate that can slide synchronously and reversely in the vertical direction are arranged on the fixed frame, and can respectively block the upper and lower ends of the filter box; a filter plate is arranged at the lower end of the upper cover plate. When the upper cover plate and the lower cover plate respectively block the upper and lower ends of the filter box, the lower end surface of the filter plate contacts the lower cover plate.

[0008] Furthermore, a scraping component is arranged at the upper end of the filter box. The scraping component includes two scrapers that can respectively contact the two opposite side surfaces of the filter plate.

[0009] Furthermore, the number of filter plates at the lower end of the lower cover plate is two, and the diameter of the filter holes in the filter plate close to the air inlet pipe is larger than that of the other filter plate.

[0010] Further, both the upper cover plate and the lower cover plate are slidably connected to the fixing frame in the vertical direction. A rotatable lead screw is provided on the fixing frame. The upper and lower ends of the lead screw are respectively provided with a first external thread and a second external thread with opposite helix directions and equal pitches. The first external thread and the second external thread respectively penetrate through the upper cover plate and the lower cover plate and are threadedly connected to the upper cover plate and the lower cover plate respectively.

[0011] Further, the helix angles of the first external thread and the second external thread are both smaller than the equivalent friction angle.

[0012] Further, the filter plate is fixedly connected to the upper cover plate by bolts.

[0013] Further, a sealing gasket is provided between the upper cover plate and the filter box, and a sealing gasket is also provided between the lower cover plate and the filter box.

[0014] Further, an upper cover is fixedly bolted to the upper end of the heat exchange box. A water suction pipe is fixed to the upper cover and extends to the bottom of the heat exchange box. The water suction pipe is connected to a suction pump.

[0015] Further, the heat exchange tubes are spiral.

[0016] A waste incineration power generation device includes the above-mentioned waste power generation waste heat recovery device.

[0017] Advantages of the present utility model:

[0018] 1. By providing a filter box on one side of the heat exchange box, a filter assembly is provided in the filter box. In the filter assembly, an upper cover plate and a lower cover plate that can slide synchronously and reversely in the vertical direction are provided to control the sealing and opening of the upper and lower ends of the filter box. A filter plate is provided at the lower end of the upper cover plate to filter and intercept particulate matter in the tail gas, preventing a large amount of particulate matter from entering the heat exchange tubes and causing blockage, which affects the heat exchange effect. In addition, controlling the upper cover plate and the lower cover plate to move away from the filter box simultaneously can facilitate the cleaning of the particulate matter on the filter plate and the lower cover plate.

[0019] 2. By providing two filter plates in the filter box, and the diameter of the filter holes in the filter plate close to the intake pipe is larger than that of the other filter plate, hierarchical filtration and interception of solid particulate matter are realized to improve the filtration effect.

[0020] 3. By providing a scraper assembly corresponding to the filter plate at the upper end of the filter box, the scraper assembly includes two scrapers that respectively contact the two opposite side surfaces of the filter plate. While the upper cover plate rises, the scrapers can scrape off the particulate matter adhered to the side surface of the filter plate to improve the convenience of cleaning the filter plate. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the structural schematic diagram of the heat exchange tube of the present invention;

[0024] Figure 3 is the structural schematic diagram of the filter box of the present invention;

[0025] Figure 4 is the structural schematic diagram of the filter assembly of the present invention;

[0026] Figure 5 is the structural schematic diagram of the lead screw of the present invention. Detailed implementation manners

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0028] As Figures 1 to 2 shown, a waste heat recovery device for garbage power generation includes a bottom plate. A heat exchange box 1 is fixed at the upper end of the bottom plate. A heat exchange tube 2 is installed in the heat exchange box 1. The upper and lower ends of the heat exchange tube 2 are respectively provided with an air inlet end and an air outlet end 22. The air inlet end 21 and the air outlet end 22 respectively extend to the outside of the heat exchange box 1. Water is filled in the heat exchange box 1. The tail gas enters the heat exchange tube 2 from the air inlet end 21, transfers the waste heat of the tail gas to the water, and then the tail gas is discharged from the air outlet end 22;

[0029] An upper cover 3 is fixed at the upper end of the heat exchange box 1. A water extraction pipe 4 is fixed on the upper cover 3. The water extraction pipe 4 extends to the bottom of the heat exchange box 1. The water extraction pipe 4 is connected to a suction pump and can extract the heated water from the heat exchange box 1 and store it. The extracted hot water can be used for heating and other purposes, thereby realizing the recovery and utilization of the heat of the tail gas generated by power generation;

[0030] In this embodiment, the upper cover 3 and the heat exchange box 1 are fixed by means of bolt connection to facilitate the disassembly of the upper cover 3, so as to facilitate the filling of cold water to exchange heat with the tail gas in the heat exchange tube 2.

[0031] In addition, the heat exchange tube 2 in this embodiment is spiral to increase the heat exchange area between the tail gas and water and improve the heat exchange effect.

[0032] A filter box 5 is provided on one side of the heat exchange box 1, and a filter assembly 6 is installed on the filter box 5. After the tail gas filters out solid particles through the filter assembly 6, it then enters the heat exchange tube 2 for heat exchange, which can prevent the solid particles from blocking the heat exchange tube 2 to ensure the heat exchange effect.

[0033] As Figure 3 shown, both the upper and lower ends of the filter box 5 are open, and a support rod 51 fixedly connected to the bottom plate is provided at the lower end of the filter box 5, so that the filter box 5 is suspended above the bottom plate; an air inlet pipe 52 and an air outlet pipe 53 are respectively provided on the opposite sides of the filter box 5, and the air outlet pipe 53 is communicated with the heat exchange tube 2; the tail gas enters the filter box 5 through the air inlet pipe 52 and after being filtered by the filter assembly 6, it is discharged through the air outlet pipe 53 and enters the heat exchange tube 2.

[0034] As Figure 4 shown, the filter assembly 6 includes a fixing frame 61 fixed to the upper end of the bottom plate. The fixing frame 61 is provided with an upper cover plate 62 and a lower cover plate 63 that can slide synchronously and reversely in the vertical direction. By controlling the upper cover plate 62 and the lower cover plate 63 to approach each other, the upper and lower ends of the filter box 5 can be blocked simultaneously; a filter plate 64 is fixed to the lower end of the upper cover plate 62. The left and right sides of the filter plate 64 are respectively in contact with the inner side walls of the two sides of the filter box 5. When the upper cover plate 62 and the lower cover plate 63 block the upper and lower ends of the filter box 5 respectively, the bottom edge of the filter plate 64 is in contact with the upper end surface of the lower cover plate 63; the tail gas enters the filter box 5 and is filtered by the filter plate 64 (particles larger than the pore diameter of the filter hole will be blocked), so as to realize the filtration and interception of the particles.

[0035] After the filtration is completed, by controlling the upper cover plate 62 and the lower cover plate 63 to move away synchronously, the upper cover plate 62 and the lower cover plate 63 can be lifted and separated from the filter box 5 to facilitate the cleaning or disassembly of the filter plate 64; at the same time, the lower cover plate 63 descends to facilitate the cleaning of the particles falling on the lower cover plate 63.

[0036] In this embodiment, the number of filter plates 64 at the lower end of the lower cover plate 63 is two, and the pore diameter of the filter plate 64 close to the air inlet pipe 52 is larger than that of the other filter plate 64. When the tail gas passes through the first filter plate 64, the relatively larger-diameter particles are intercepted, and then the relatively smaller-diameter particles are intercepted by the second filter plate 64, realizing the hierarchical filtration and interception of the solid particles. Compared with using only one filter plate with a smaller pore diameter for one-time filtration, the hierarchical filtration extends the time when the filter plate is blocked and improves the filtration effect.

[0037] In this embodiment, as Figure 3As shown in the figure, two scraper assemblies 54 corresponding to the filter plate 64 are arranged at the upper end of the filter box 5. Two scrapers 541 are arranged in the scraper assemblies 54 and are respectively in contact with the opposite two side surfaces (front and rear side surfaces) of the filter plate 64. During the process of the upper cover plate 62 driving the filter plate 64 to rise, the scrapers 541 can scrape off the particulate matter adhering to the filter plate 64 and fall onto the lower cover plate 63. Along with the synchronous descent of the lower cover plate 63, it is convenient to clean the particulate matter on it.

[0038] In this embodiment, both the upper cover plate 62 and the lower cover plate 63 are slidably connected to the fixing frame 61 in the vertical direction. A lead screw 65 is rotatably connected to the fixing frame 61. As Figure 5 shown, first external threads 651 and second external threads 652 with opposite helix directions and equal pitches are respectively arranged at the upper and lower ends of the lead screw 65. The first external threads 651 and the second external threads 652 respectively penetrate through the upper cover plate 62 and the lower cover plate 63 and are respectively threadedly connected to the upper cover plate 62 and the lower cover plate 63. By arranging a motor on the fixing frame 61 to drive the lead screw 65 to rotate, synchronous reverse sliding of the upper cover plate 62 and the lower cover plate 63 can be realized, so as to realize the simultaneous closing and opening of the upper cover plate 62 and the lower cover plate 63;

[0039] It should be mentioned that in order to ensure the stability of the upper cover plate 62 and the lower cover plate 63 after position adjustment, the lead screw 65 needs to have self-locking property, that is, the helix angles of the first external threads 651 and the second external threads 652 are both smaller than the equivalent friction angle;

[0040] Of course, the ways to drive the synchronous reverse sliding of the upper cover plate 62 and the lower cover plate 63 include but are not limited to the lead screw 65 in this embodiment. In some embodiments, two cylinders can also be arranged on the fixing frame 61 to respectively drive the upper cover plate 62 and the lower cover plate 63 to rise and fall, and by controlling the driving timing of the two cylinders, synchronous reverse sliding of the upper cover plate 62 and the lower cover plate 63 can also be realized.

[0041] In this embodiment, the filter plate 64 is fixed to the upper cover plate 62 by means of bolt connection, so as to facilitate the removal of the filter plate 64 for replacement when the filter plate 64 rises and leaves the filter box 5.

[0042] In addition, a sealing gasket made of rubber is arranged between the upper cover plate 62 and the filter box 5, and a sealing gasket made of rubber is also arranged between the lower cover plate 63 and the filter box 5 to improve the sealing performance.

[0043] Working principle:

[0044] By providing a filter box 5 on one side of the heat exchange box 1 and arranging a filter assembly 6 inside the filter box 5, with an upper cover plate 62 and a lower cover plate 63 that can slide synchronously and reversely in the vertical direction provided in the filter assembly 6, the blocking and opening of the upper and lower ends of the filter box 5 are controlled. A filter plate 64 is provided at the lower end of the upper cover plate 62 to filter and intercept particulate matter in the tail gas, preventing a large amount of particulate matter from entering the heat exchange tubes 2 and causing blockage, which affects the heat exchange effect. In addition, controlling the upper cover plate 62 and the lower cover plate 63 to move away from the filter box 5 simultaneously can facilitate the cleaning of the particulate matter on the filter plate 64 and the lower cover plate 63. By providing two filter plates 64 inside the filter box 5, and the pore diameter of the filter plate 64 closer to the intake pipe 52 being larger than that of the other filter plate 64, hierarchical filtration and interception of solid particulate matter are achieved to improve the filtration effect. By providing a scraper assembly 54 corresponding to the filter plate 64 at the upper end of the filter box 5, the scraper assembly 54 includes two scrapers 541 that respectively contact the two opposite side surfaces of the filter plate 64. While the upper cover plate 63 rises, the scrapers 541 can scrape off the particulate matter adhering to the side surface of the filter plate 64 to improve the convenience of cleaning the filter plate 64.

[0045] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0046] The above has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A waste power generation waste heat recovery device, including a bottom plate, a heat exchange box (1) is fixed at the upper end of the bottom plate, and a heat exchange tube (2) is arranged in the heat exchange box (1), characterized in that, On one side of the heat exchange box (1), there is a filter box (5) with open upper and lower ends. On both sides of the filter box (5), an air inlet pipe (52) and an air outlet pipe (53) are respectively arranged, and the air outlet pipe (53) is communicated with the heat exchange pipe (2). A filter assembly (6) is arranged on the filter box (5). The filter assembly (6) includes a fixing frame (61) fixed to the upper end of the bottom plate. On the fixing frame (61), there are an upper cover plate (62) and a lower cover plate (63) that can slide synchronously and in opposite directions in the vertical direction, and can respectively block the upper and lower ends of the filter box (5). A filter plate (64) is arranged at the lower end of the upper cover plate (62). When the upper cover plate (62) and the lower cover plate (63) respectively block the upper and lower ends of the filter box (5), the lower end surface of the filter plate (64) contacts the lower cover plate (63).

2. The waste heat recovery device for power generation according to claim 1, wherein A scraping plate assembly (54) is arranged at the upper end of the filter box (5). The scraping plate assembly (54) includes two scraping plates (541) that can respectively contact the two opposite side surfaces of the filter plate (64).

3. A waste heat recovery device for power generation according to claim 1, characterized in that, The number of filter plates (64) at the lower end of the lower cover plate (63) is two, and the diameter of the filter holes in the filter plate (64) closer to the air inlet pipe (52) is larger than that of the other filter plate (64).

4. A waste power generation waste heat recovery device according to claim 1, characterized in that, Both the upper cover plate (62) and the lower cover plate (63) are slidably connected to the fixing frame (61) in the vertical direction. A rotatable lead screw (65) is arranged on the fixing frame (61). At the upper and lower ends of the lead screw (65), there are respectively a first external thread (651) and a second external thread (652) with opposite helix directions and equal pitches. The first external thread (651) and the second external thread (652) respectively penetrate through the upper cover plate (62) and the lower cover plate (63), and are respectively threadedly connected to the upper cover plate (62) and the lower cover plate (63).

5. A waste power generation waste heat recovery device according to claim 4, characterized in that, The helix angles of both the first external thread (651) and the second external thread (652) are smaller than the equivalent friction angle.

6. The waste heat recovery device for power generation according to claim 1, characterized in that, The filter plate (64) is fixedly connected to the upper cover plate (62) by bolts.

7. A waste heat recovery device for power generation according to claim 1, characterized in that, A sealing gasket is arranged between the upper cover plate (62) and the filter box (5), and a sealing gasket is also arranged between the lower cover plate (63) and the filter box (5).

8. A waste power generation waste heat recovery device according to claim 1, characterized in that, An upper cover (3) is fixedly bolted to the upper end of the heat exchange box (1). A water suction pipe (4) is fixed to the upper cover (3), and the water suction pipe (4) extends to the bottom of the heat exchange box (1). The water suction pipe (4) is connected to a suction pump.

9. The waste heat recovery device for power generation according to claim 1, wherein The heat exchange pipe (2) is spiral.

Images