Absorption heat pump for high-temperature flue gas waste heat recovery

Abstract

The utility model relates to the technical field of waste heat recovery, and discloses a high-temperature flue gas waste heat recovery absorption heat pump which comprises a filter box installed at the position of an air inlet of the heat pump, the interior of the filter box is divided into a discharging cavity, a filtering cavity and a collecting cavity through two partition plates, the filtering cavity communicates with the air inlet of the heat pump, and a filtering assembly is arranged in the filtering box; the filtering assembly comprises filter paper used for filtering smoke, the rolled filter paper is located in the discharging cavity, and the opening end of the filter paper penetrates through the filtering cavity and enters the collecting cavity; the limiting piece is used for enabling the filter paper to be arranged in a V shape formed by connecting a plurality of pieces of filter paper together; the driving part is used for driving the filter paper in the discharging cavity to move towards the receiving cavity; the filter paper can be automatically replaced for multiple times without turning off a power supply, the labor cost of the absorption heat pump is reduced to a certain extent, and meanwhile, the influence on the operation of the absorption heat pump is reduced to a certain extent.

Description

Technical Field

[0001] This application relates to the technical field of waste heat recovery, and particularly to an absorption heat pump for high-temperature flue gas waste heat recovery. Background Art

[0002] An absorption heat pump is a technology that utilizes the waste heat in flue gas for energy recovery. It usually combines a direct contact heat exchanger and an absorption heat pump to achieve deep recovery and utilization of flue gas waste heat. This technology can effectively reduce fuel consumption, reduce pollutant emissions, and has good energy-saving and environmental protection effects.

[0003] The flue gas contains pollutants. Directly recycling the flue gas will not reduce the pollutants in the flue gas. Therefore, a flue gas filtering device is arranged at the air inlet position of the absorption heat pump. The filtering device of the absorption heat pump includes a filtering box, and an air filter element is installed in the filtering box. The absorption heat pump filters the flue gas through the air filter element and then recovers and utilizes the waste heat of the filtered flue gas.

[0004] However, in the process of implementing the related technical solutions, it is found that there are at least the following technical problems: Generally, the flue gas contains a large amount of pollutants. In order to ensure the filtering effect, professional personnel are required to regularly turn off the power to replace the air filter element, which increases the labor cost of using the absorption heat pump to a certain extent and affects the operation of the absorption heat pump to a certain extent. Summary of the Utility Model

[0005] This application provides an absorption heat pump for high-temperature flue gas waste heat recovery, which solves the technical problems in the prior art that professional personnel are required to regularly turn off the power to replace the air filter element, increasing the labor cost of using the absorption heat pump to a certain extent and affecting the operation of the absorption heat pump to a certain extent. It realizes automatic replacement of the filter paper without turning off the power multiple times, reducing the labor cost of the absorption heat pump to a certain extent and reducing the impact on the operation of the absorption heat pump to a certain extent.

[0006] This application provides an absorption heat pump for high-temperature flue gas waste heat recovery, including a filtering box installed at the air inlet position of the heat pump. The inside of the filtering box is divided into a material placing chamber, a filtering chamber, and a material receiving chamber by two partition plates. The filtering chamber is communicated with the air inlet of the heat pump. A filtering component is arranged inside the filtering box. The filtering component includes: a filter paper for filtering flue gas. The coiled filter paper is located in the material placing chamber, and the open end of the filter paper passes through the filtering chamber and enters the material receiving chamber; a limiting member for arranging the filter paper in a V-shaped arrangement connected together; a driving member for driving the filter paper in the material placing chamber to move towards the material receiving chamber.

[0007] Further, the limiting member includes: limiting shafts. A plurality of vertically arranged limiting shafts are rotatably installed on the inner bottom surface of the filtering chamber. The plurality of limiting shafts are respectively located on both sides of the long side of the filtering box, and the plurality of limiting shafts located on both sides of the filtering box are arranged staggeredly.

[0008] Further, a connecting shaft is rotatably installed in each of the feeding chamber and the receiving chamber. The coiled filter paper is installed on the connecting shaft in the feeding chamber. A sleeve is installed on the connecting shaft in the receiving chamber. The open end of the filter paper passes through the filtering chamber and enters the receiving chamber and is fixedly installed on the sleeve. A first motor is fixedly installed on the bottom surface of the filtering box at the bottom surface of the receiving chamber. The output end of the first motor is fixedly connected to the connecting shaft in the receiving chamber.

[0009] Further, the driving member includes: driving rollers. Through openings are formed in both of the two partition plates. A driving roller is rotatably installed on both vertical sides of each of the two through openings; transmission gears. A transmission gear is fixedly connected to each of the positions corresponding to the four driving rollers on the bottom surface of the filtering box. The two transmission gears located at the bottom of the same partition plate are meshed; a power member for driving the plurality of transmission gears to rotate simultaneously.

[0010] Further, the power member includes: transmission wheels. The two transmission wheels are respectively arranged below the two partition plates and on the same side. The two transmission wheels are respectively fixedly connected to the transmission gears at two corresponding positions; a chain. The two transmission wheels are connected by the chain; a second motor. The second motor is fixedly installed on the bottom surface of the filtering box, and the output end of the second motor is fixedly connected to one of the transmission wheels.

[0011] The technical solution provided by the present application has at least the following technical effects or advantages:

[0012] Due to the adoption of the filtering assembly, the technical problems in the prior art that professional personnel are required to regularly turn off the power to replace the air filter element, which increases the labor cost of using the absorption heat pump to a certain extent and affects the operation of the absorption heat pump to a certain extent, are effectively solved. Furthermore, the filter paper can be automatically replaced multiple times without turning off the power. Description of the Drawings

[0013] Figure 1 It is the front view of the absorption heat pump in the embodiment of the present application;

[0014] Figure 2 It is the internal structure schematic diagram of the filtering box in the embodiment of the present application;

[0015] Figure 3 It is the arrangement structure schematic diagram of the filter paper in the embodiment of the present application;

[0016] Figure 4 It is a schematic structural diagram of the power component in the embodiment of the present application;

[0017] Figure 5 It is a schematic layout structure diagram of the transmission wheels in the embodiment of the present application;

[0018] In the figure: 1, heat pump; 2, filter box; 21, feeding chamber; 22, filtering chamber; 23, material collecting chamber; 24, box cover; 3, filter assembly; 31, filter paper; 32, limiting member; 321, limiting shaft; 33, driving member; 331, driving roller; 332, transmission gear; 34, connecting shaft; 35, sleeve; 36, power component; 361, transmission wheel; 362, chain; 363, second motor; 37, first motor; 4, partition. Specific embodiments

[0019] The embodiment of the present application discloses an absorption heat pump for recovering waste heat of high-temperature flue gas. The filter box 2 is divided into a feeding chamber 21, a filtering chamber 22, and a material collecting chamber 23 by a partition 4. A filter assembly 3 is arranged in the filter box 2. The filter assembly 3 includes filter paper 31. The coiled filter paper 31 is located in the feeding chamber 21. The end of the filter paper 31 passes through the filtering chamber 22 and enters the material collecting chamber 23. After the flue gas is filtered by the filter paper 31, it enters the heat pump 1. When the filter paper 31 in the filtering chamber 22 needs to be replaced, the driving member 33 drives the filter paper 31 to move, so that the clean filter paper 31 enters the filtering chamber 22, and the filter paper 31 to be replaced enters the material collecting chamber 23. Before the filter paper 31 in the feeding chamber 21 is used up, the power supply can be not turned off to replace the filter paper 31.

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific embodiments.

[0021] Refer to Figures 1 - 3, the absorption heat pump for recovering waste heat from high-temperature flue gas includes a filter box 2 installed at the intake position of the heat pump 1. The filter box 2 is divided into a material feeding chamber 21, a filtering chamber 22, and a material collecting chamber 23 by two partition plates 4. The filtering chamber 22 is communicated with the intake of the heat pump 1. A filtering component 3 is arranged in the filter box 2. The filtering component 3 includes a filter paper 31, a limiting member 32 for arranging the filter paper 31 in a V-shaped arrangement connected together, and a driving member 33. The rolled filter paper 31 is located in the material feeding chamber 21. The open end of the filter paper 31 passes through the filtering chamber 22 and enters the material collecting chamber 23. The flue gas enters the filtering chamber 22, then passes through the filter paper 31 and enters the heat pump 1. After the flue gas is filtered by the filter paper 31, waste heat recovery is carried out. When the filter paper 31 in the filtering chamber 22 needs to be replaced, the driving member 33 drives the filter paper 31 to move, so that the clean filter paper 31 enters the filtering chamber 22, and the filter paper 31 to be replaced enters the material collecting chamber 23. Before the filter paper 31 in the material feeding chamber 21 is used up, the power supply does not need to be turned off to replace the filter paper 31, which reduces the labor cost of the absorption heat pump to a certain extent and reduces the impact on the operation of the absorption heat pump to a certain extent.

[0022] Refer to Figure 2 , Figure 3 , the limiting member 32 includes a plurality of vertically arranged limiting shafts 321. The plurality of limiting shafts 321 are all rotatably installed on the inner bottom surface of the filtering chamber 22. The plurality of limiting shafts 321 are respectively located on both long sides of the filter box 2. The plurality of limiting shafts 321 located on both sides of the filter box 2 are arranged staggeredly. A connecting shaft 34 is rotatably installed in both the material feeding chamber 21 and the material collecting chamber 23. The rolled filter paper 31 is fixedly installed on the connecting shaft 34 in the material feeding chamber 21. A sleeve 35 is installed on the connecting shaft 34 in the material collecting chamber 23. After the open end of the rolled filter paper 31 enters the filtering chamber 22, it passes through the plurality of limiting shafts 321 located on both sides of the filter box 2 staggeredly, so that the filter paper 31 is arranged in a V-shaped arrangement connected together, increasing the filtering area of the filter paper 31 and the flue gas. The open end of the rolled filter paper 31 passes through the filtering chamber 22 and then enters the material collecting chamber 23 and is fixedly installed on the sleeve 35. A first motor 37 is installed on the bottom surface of the filter box 2. The output end of the first motor 37 is fixedly connected to the bottom end of the connecting shaft 34 located in the material collecting chamber 23. The first motor 37 drives the connecting shaft 34 in the material collecting chamber 23 to rotate, winding the filter paper 31 entering the material collecting chamber 23 on the sleeve 35 for convenient collection and treatment. The bottom edge of the filter paper 31 is attached to the bottom wall of the filtering chamber 22, and the top edge of the filter paper 31 is attached to the bottom surface of the box cover 24, so that the flue gas needs to pass through the filter paper 31 to enter the heat pump 1.

[0023] Refer to Figures 2 - 5, the driving member 33 includes a driving roller 331. Through openings are formed in both of the two partition plates 4. One driving roller 331 is rotatably installed on each of the vertical sides of the two through openings. The filter paper 31 passes through between the two driving rollers 331 located on the same partition plate 4. The two driving rollers 331 are respectively in contact with both sides of the filter paper 31. At the positions corresponding to the four driving rollers 331 on the bottom surface of the filter box 2, a transmission gear 332 is fixedly connected. The two transmission gears 332 located at the bottom of the same partition plate 4 are meshed. The power member 36 drives a plurality of transmission gears 332 to rotate simultaneously, thereby driving the driving rollers 331 to rotate and moving the filter paper 31.

[0024] Referring to Figures 4 - 5 , the power member 36 includes two transmission wheels 361 and a second motor 363. The two transmission wheels 361 are respectively arranged below the two partition plates 4 and on the same side. The two transmission wheels 361 are respectively fixedly connected to two corresponding transmission gears 332. The two transmission wheels 361 and the two corresponding transmission gears 332 are coaxially arranged. The two transmission wheels 361 are connected by a chain 362. The second motor 363 is fixedly installed on the bottom surface of the filter box 2. The output end of the second motor 363 is fixedly connected to one of the transmission wheels 361. When the second motor 363 is started, the second motor 363 drives one of the transmission wheels 361 to rotate. This transmission wheel 361 drives the other transmission wheel 361 to rotate simultaneously through the chain 362. The two transmission gears 332 on the same side rotate simultaneously, and at the same time drive the meshing transmission gears 332 to mesh, thereby driving the driving rollers 331 to rotate, conveying the filter paper 31, sending the filter paper 31 in the feeding chamber 21 into the filtering chamber 22, and sending the filter paper in the filtering chamber 22 that needs to be replaced into the receiving chamber 23. Before the filter paper 31 in the feeding chamber 21 is used up, the power supply can be not turned off to replace the filter paper 31. After all the filter paper 31 in the feeding chamber 21 is used up and needs to be replaced, first, leave the end of the filter paper 31 to be replaced away from the sleeve 35 in the feeding chamber 21. Install the new roll of filter paper 31 on the connecting shaft 34 in the feeding chamber 21. Connect the opening end of the new filter paper 31 to the end of the filter paper 31 to be replaced. Drive the filter paper 31 to move into the receiving chamber 23 through the motor until the end of the new filter paper 31 enters the receiving chamber 23. Separate the new filter paper 31 from the old filter paper 31, remove the old filter paper 31, install a new sleeve 35 on the connecting shaft 34 in the receiving chamber 23, and install the end of the new filter paper 31 away from the feeding chamber 21 on the new sleeve 35. The installation of the new filter paper 31 is completed.

[0025] The working principle of the embodiment of this application is as follows: When the absorption heat pump is in use, first, the rolled filter paper 31 is installed on the connecting shaft 34 in the feeding chamber 21. The end of the filter paper 31 away from the connecting shaft 34 passes through between the two driving rollers 331 close to the feeding chamber 21 and enters the filtering chamber 22, and then passes through the multiple limiting shafts 321 on both sides of the filtering box 2 in a staggered manner, so that the filter paper 31 is arranged in a V shape with multiple connected parts. Then it passes through between the two driving rollers 331 close to the receiving chamber 23 and enters the receiving chamber 23, and is fixed on the sleeve 35. After covering the box cover 24, when it is necessary to replace the filter paper 31 in the filtering chamber 22, the four driving rollers 331 are driven to rotate simultaneously by the motor, driving the filter paper 31 to move into the receiving chamber 23 until the filter paper 31 in the filtering chamber 22 is replaced with a new one. After the replacement of the filter paper 31 in the filtering chamber 22 is completed, before the filter paper 31 in the feeding chamber 21 is used up, the power supply does not need to be turned off and the filter paper 31 can be replaced by controlling the motor, which reduces the labor cost of the absorption heat pump to a certain extent and reduces the impact on the operation of the absorption heat pump to a certain extent.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

[0027] The above-mentioned is only the preferred specific implementation manner of the embodiment of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application, according to the technical solution and its concept of this application, makes equivalent replacements or changes, and should be covered by the protection scope of this application.

Claims

1. An absorption heat pump for recovering waste heat from high-temperature flue gas, comprising a filter box (2) installed at the air inlet of a heat pump (1), characterized in that: The filter box (2) is divided into a discharge chamber (21), a filter chamber (22), and a collection chamber (23) by two partitions (4); the filter chamber (22) is communicated with an air inlet of the heat pump (1); a filter assembly (3) is arranged in the filter box (2); the filter assembly (3) comprises: Filter paper (31) for filtering smoke, the rolled filter paper (31) being located in the discharge chamber (21), the open end of the filter paper (31) passing through the filter chamber (22) and entering the receiving chamber (23); A limiting member (32) is used to arrange the filter papers (31) in a V-shaped arrangement. The driving member (33) drives the filter paper (31) in the material discharging chamber (21) to move toward the material receiving chamber (23).

2. The absorption heat pump for recovering waste heat from high-temperature flue gas according to claim 1, characterized in that: The limiting member (32) comprises: A limiting shaft (321), a plurality of vertically arranged limiting shafts (321) are rotatably mounted on the inner bottom surface of the filter chamber (22), the plurality of limiting shafts (321) are respectively located on both sides of the long side of the filter box (2), and the plurality of limiting shafts (321) respectively located on both sides of the filter box (2) are staggered.

3. The absorption heat pump for recovering waste heat from high-temperature flue gas according to claim 1, characterized in that: A connecting shaft (34) is rotatably mounted in both the discharge chamber (21) and the receiving chamber (23); the rolled filter paper (31) is mounted on the connecting shaft (34) in the discharge chamber (21); a sleeve (35) is mounted on the connecting shaft (34) in the receiving chamber (23); an open end of the filter paper (31) passes through the filter chamber (22) and enters the receiving chamber (23) and is fixedly mounted on the sleeve (35); a first motor (37) is fixedly mounted on the bottom surface of the filter box (2) located at the bottom surface of the receiving chamber (23); an output end of the first motor (37) is fixedly connected to the connecting shaft (34) in the receiving chamber (23).

4. The absorption heat pump for recovering waste heat from high-temperature flue gas according to claim 1, characterized in that: The driving member (33) comprises: A driving roller (331), wherein the two partitions (4) are each provided with a through hole, and a driving roller (331) is rotatably mounted on both sides of the two through holes vertically; A transmission gear (332), wherein each of the bottom surfaces of the filter box (2) and the corresponding positions of the four driving rollers (331) is fixedly connected with a transmission gear (332), and two transmission gears (332) located at the bottom of the same partition plate (4) are meshed; The power member (36) drives the plurality of transmission gears (332) to rotate simultaneously.

5. The absorption heat pump for recovering waste heat from high-temperature flue gas according to claim 4, characterized in that: The power member (36) comprises: Transmission wheels (361), wherein the two transmission wheels (361) are respectively arranged below the two partitions (4) and located on the same side, and the two transmission wheels (361) are respectively fixedly connected to the transmission gears (332) at two corresponding positions; A chain (362), wherein the two transmission wheels (361) are connected in transmission via the chain (362); A second motor (363), the second motor (363) is fixedly mounted on the bottom surface of the filter box (2), and an output end of the second motor (363) is fixedly connected to one of the transmission wheels (361).

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