Low-power-consumption waste heat recovery circulating device

Abstract

The utility model discloses a waste heat recovery circulating device with low power consumption, which relates to the technical field of waste heat recovery, and comprises a pipeline, one end of the pipeline is fixedly connected with an air inlet cover, the other end of the pipeline is fixedly connected with an air outlet cover, and the inside of the pipeline is fixedly connected with a filter screen. A cleaning mechanism is arranged on the side, located on the air inlet cover, of the filter screen and comprises a cleaning support, the cleaning support is fixed to the side, close to the air inlet cover, in the pipeline, the cleaning support is rotationally connected with a rotating shaft, the end, close to the air inlet cover, of the rotating shaft is fixedly connected with fan blades, and the other end of the rotating shaft is fixedly connected with a cleaning scraper. The cleaning scraping plate is driven to hang dust on the filter screen, the filtering effect is improved, meanwhile, the fan blades are blown through flue gas, energy consumption is reduced, and power consumption is reduced; and the flow speed of the smoke is slowed down through the barrier plate, the path of the smoke is increased, the waste heat exchange time is longer, and the energy utilization rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically a low-power waste heat recovery and circulation device. Background Technology

[0002] Waste heat refers to usable but unused thermal energy. Due to the backwardness of my country's industrial equipment and low energy utilization rate, industries such as chemical, petrochemical, building materials, textile, metallurgy, power, food, papermaking, and electronics directly release large amounts of heat into the air during production, wasting energy and polluting the environment. Waste heat recovery aims to recycle and utilize this wasted heat energy, improve energy efficiency, reduce production costs, and protect the environment.

[0003] For example, a prior art Chinese utility model patent (CN211205013U) discloses an industrial flue gas waste heat recovery water circulation device, including a pipe body and a heating box and a water storage tank symmetrically arranged at the top of the pipe body. The water storage tank is connected to the pipe body through a pipe, and the heating box is connected to the water storage tank through symmetrically arranged conduits. An air inlet hood is provided on the side of the pipe body away from the water storage tank, and an exhaust hood is provided on the other side of the pipe body. A vertically arranged filter screen is provided inside the pipe body and between the heating box and the water storage tank. A disc is provided on the side of the filter screen away from the air inlet hood, and several evenly distributed dust removal rods are provided in the disc. A drive motor drives the dust removal rods to clean the dust accumulated on the filter screen, thereby improving the filtration effect.

[0004] However, the existing technology has the following drawbacks: the flue gas flow rate is relatively fast, and the heat in the flue gas is not fully absorbed before being emitted, which leads to energy waste. The drive motor to drive the dust removal bar to clean the dust accumulated on the filter screen consumes a certain amount of energy, making it impossible to achieve environmental protection and low power consumption.

[0005] Based on this, a low-power waste heat recovery and circulation device is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0006] The purpose of this invention is to provide a low-power waste heat recovery and circulation device to solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A low-power waste heat recovery and circulation device includes: a pipe, one end of which is fixedly connected to an air inlet hood, and the other end of which is fixedly connected to an air outlet hood. A filter screen is fixedly connected inside the pipe. The filter screen is provided with a cleaning mechanism on one side of the air inlet hood. The cleaning mechanism includes a cleaning bracket, which is fixed inside the pipe near the air inlet hood. A rotating shaft is rotatably connected to the cleaning bracket. A fan blade is fixedly connected to one end of the rotating shaft near the air inlet hood, and a cleaning scraper is fixedly connected to the other end of the rotating shaft.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative: the filter screen is provided with a blocking unit on one side of the vent hood, the blocking unit comprising six blocking plates that divide the pipe into a serpentine channel.

[0011] In one alternative: a waste heat recovery component is provided between the six baffles, the waste heat recovery component including five waste heat recovery pipes, the ends of the five waste heat recovery pipes near the air inlet hood are connected by a water inlet pipe, and the ends of the five waste heat recovery pipes near the air outlet hood are connected by a water outlet pipe.

[0012] In one alternative: the pipe is provided with an ash collection frame at the lower end of the cleaning scraper, and a handle is fixedly connected to the ash collection frame.

[0013] In one alternative: the lower end of the pipe is fixedly connected to a support frame.

[0014] In one alternative: the waste heat recovery pipe is a copper pipe.

[0015] In one alternative: heat-absorbing fins are fixedly connected to the outer end of the waste heat recovery pipe.

[0016] In one alternative: the cleaning scraper contacts the surface of the filter screen.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention uses flue gas to blow a fan blade, which in turn drives a cleaning scraper to remove dust from the filter screen, improving the filtration effect. At the same time, the use of flue gas to blow the fan blade reduces energy consumption and lowers power consumption. Furthermore, the baffle plate slows down the flow rate of the flue gas, increases the flue gas path, and allows for a longer waste heat exchange time, thereby improving energy utilization. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2This is a cross-sectional view of the present invention.

[0021] Figure 3 This is a schematic diagram of the cleaning mechanism of this utility model.

[0022] Figure reference numerals: 100, pipe; 101, air inlet hood; 102, air outlet hood; 200, filter screen; 301, cleaning bracket; 302, rotating shaft; 303, fan blade; 304, cleaning scraper; 401, baffle plate; 501, waste heat recovery pipe; 502, water inlet pipe; 503, water outlet pipe; 601, ash collection frame; 602, handle; 700, support frame; 800, heat absorption fins. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] In one embodiment, such as Figures 1-3 As shown, a low-power waste heat recovery and circulation device includes: a pipe 100, one end of which is fixedly connected to an air inlet hood 101, and the other end of which is fixedly connected to an air outlet hood 102. A filter screen 200 is fixedly connected inside the pipe 100. The filter screen 200 has a cleaning mechanism located on one side of the air inlet hood 101. The cleaning mechanism includes a cleaning bracket 301, which is fixed inside the pipe 100 near the air inlet hood 101. A rotating shaft 302 is rotatably connected to the support bracket 301. One end of the rotating shaft 302 near the air intake hood 101 is fixedly connected to a fan blade 303, and the other end of the rotating shaft 302 is fixedly connected to a cleaning scraper 304. Smoke enters the pipe 100 from the air intake hood 101, and the smoke blows the fan blade 303 to rotate. The fan blade 303 drives the rotating shaft 302 to rotate, and the rotating shaft 302 drives the cleaning scraper 304 to rotate. The cleaning scraper 304 scrapes away the dust on the filter screen 200 and the pipe 100.

[0025] In this embodiment, as Figure 2 As shown, the filter screen 200 is provided with a blocking unit on one side of the exhaust hood 102. The blocking unit includes six blocking plates 401. The six blocking plates 401 divide the pipe 100 into a serpentine channel. The six blocking plates 401 slow down the flow rate of the flue gas, increase the path of the flue gas, make the waste heat exchange time longer, and improve the energy utilization rate.

[0026] In one embodiment, such as Figure 2As shown, a waste heat recovery component is provided between the six baffles 401. The waste heat recovery component includes five waste heat recovery pipes 501. The end of the five waste heat recovery pipes 501 near the air inlet hood 101 is connected by a water inlet pipe 502, and the end of the five waste heat recovery pipes 501 near the air outlet hood 102 is connected by a water outlet pipe 503. Cold water is introduced into the water inlet pipe 502 and enters the waste heat recovery pipes 501. The cold water in the waste heat recovery pipes 501 absorbs the heat of the flue gas, and hot water flows out from the water outlet pipe 503, so that the heat is recycled.

[0027] In one embodiment, such as Figure 1 and Figure 2 As shown, the pipe 100 is provided with an ash collection frame 601 at the lower end of the cleaning scraper 304. A handle 602 is fixedly connected to the ash collection frame 601. The ash collection frame 601 collects the dust scraped by the cleaning scraper 304, and the handle 602 makes it easy to take out the ash collection frame 601.

[0028] In one embodiment, such as Figure 1 As shown, the lower end of the pipe 100 is fixedly connected to the support frame 700, which supports the device and makes the device work more stably.

[0029] In one embodiment, such as Figure 2 As shown, the waste heat recovery pipe 501 is a copper pipe. Copper pipes have good thermal conductivity, strong corrosion resistance, are not easily oxidized, and are durable.

[0030] In one embodiment, such as Figure 2 As shown, the outer end of the waste heat recovery pipe 501 is fixedly connected to the heat absorption fins 800 to enhance the absorption of heat from the flue gas and improve energy utilization.

[0031] In one embodiment, such as Figure 2 As shown, the cleaning scraper 304 contacts the surface of the filter screen 200 to scrape away the dust on the surface of the filter screen 200, thereby improving the filtration effect.

[0032] The above embodiment discloses a low-power waste heat recovery and circulation device, wherein flue gas enters the pipe 100 from the inlet hood 101, the flue gas blows the fan blade 303 to rotate, the fan blade 303 drives the rotating shaft 302 to rotate, the rotating shaft 302 drives the cleaning scraper 304 to rotate, the cleaning scraper 304 scrapes away the dust on the filter screen 200 and the pipe 100, and the ash collection frame 601 collects the dust scraped by the cleaning scraper 304, and the ash collection frame 601 is conveniently opened via the handle 602. 1. The six baffles 401 divide the pipe 100 into a serpentine channel, slowing down the flow rate of the flue gas, increasing the path of the flue gas, making the waste heat exchange time longer, and improving the energy utilization rate. Cold water is introduced into the water inlet pipe 502 and enters the waste heat recovery pipe 501. The cold water in the waste heat recovery pipe 501 absorbs the heat of the flue gas. Hot water flows out from the water outlet pipe 503. The heat absorption fins 800 are fixedly connected to the outer end of the waste heat recovery pipe 501 to enhance the absorption of heat from the flue gas.

[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A low-power waste heat recovery and circulation device, comprising a pipe (100), one end of which is fixedly connected to an air inlet hood (101), and the other end of which is fixedly connected to an air outlet hood (102). A filter screen (200) is fixedly connected inside the pipe (100), and the filter screen (200) is provided with a cleaning mechanism on one side of the air inlet hood (101), characterized in that... The cleaning mechanism includes a cleaning bracket (301), which is fixed inside the pipe (100) on the side near the air intake hood (101). A rotating shaft (302) is rotatably connected to the cleaning bracket (301). One end of the rotating shaft (302) near the air intake hood (101) is fixedly connected to a fan blade (303), and the other end of the rotating shaft (302) is fixedly connected to a cleaning scraper (304).

2. The low-power waste heat recovery and recycling device according to claim 1, characterized in that, The filter screen (200) is provided with a blocking unit on one side of the air outlet hood (102). The blocking unit includes six blocking plates (401), which divide the pipe (100) into a serpentine channel.

3. The low-power waste heat recovery and circulation device according to claim 2, characterized in that, A waste heat recovery component is provided between the six baffles (401). The waste heat recovery component includes five waste heat recovery pipes (501). The end of the five waste heat recovery pipes (501) near the air inlet hood (101) is connected by a water inlet pipe (502), and the end of the five waste heat recovery pipes (501) near the air outlet hood (102) is connected by a water outlet pipe (503).

4. The low-power waste heat recovery and circulation device according to claim 1, characterized in that, The pipe (100) is provided with an ash collection frame (601) at the lower end of the cleaning scraper (304), and a handle (602) is fixedly connected to the ash collection frame (601).

5. The low-power waste heat recovery and circulation device according to claim 1, characterized in that, The lower end of the pipe (100) is fixedly connected to the support frame (700).

6. A low-power waste heat recovery and circulation device according to claim 3, characterized in that, The waste heat recovery pipe (501) is a copper pipe.

7. A low-power waste heat recovery and circulation device according to claim 3, characterized in that, The outer end of the waste heat recovery pipe (501) is fixedly connected to the heat absorption fins (800).

8. A low-power waste heat recovery and circulation device according to claim 1, characterized in that, The cleaning scraper (304) is in contact with the surface of the filter screen (200).

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