Coal-fired boiler energy recovery device

Abstract

The utility model relates to the technical field of boiler energy recovery, and provides a coal-fired boiler energy recovery device which comprises a heat exchange box and a cleaning mechanism. According to the device, the threaded rod, the rotating motor, the limiting rod and the sliding block are arranged, the rotating motor works to drive the threaded rod to rotate so that the sliding block can move, the vertical plate and the brush are arranged, the vertical plate moves so that the brush can clean smoke impurities on the surface of the heat exchange tube, and the heat conduction efficiency of the heat exchange tube is improved; a corrugated sleeve can prevent impurities in flue gas from being attached to the surface of a threaded rod and affecting movement of a sliding block, and a vibrator is arranged and works to convey the impurities swept down by a brush into a collecting hopper below a heat exchange box; the collecting hopper, the sliding groove and the sliding rail are arranged, the collecting hopper collects impurities, the sliding groove is matched with the sliding rail, the collecting hopper can be rapidly replaced, and the collecting amount of the impurities in the collecting hopper can be known through the observation window.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler energy recovery, in particular to an energy recovery device for a coal-fired boiler. Background Art

[0002] The emergence of coal-fired boiler energy recovery devices stems from the dual needs of energy utilization efficiency and environmental protection. In industrial production, coal-fired boilers are important heat energy supply equipment, but there are also problems of energy waste and environmental pollution. During the combustion process of traditional boilers, a large amount of heat energy is discharged with the flue gas, which not only loses energy but also aggravates air pollution. For this reason, energy recovery devices came into being. By recovering the waste heat in the flue gas, it realizes the secondary utilization of heat energy and effectively improves energy utilization. In addition, lowering the exhaust temperature can also help reduce pollutant emissions, which is in line with the development trend of green and low-carbon. Therefore, the promotion and use of coal-fired boiler energy recovery devices is of great significance to promoting energy conservation and emission reduction, protecting the ecological environment, and achieving sustainable development.

[0003] According to the search of China Utility Model Publication No.: CN220818645U, a boiler waste heat recovery device is disclosed. 1. The high-temperature flue gas will run at a uniform speed inside the first annular tube and the second annular tube. The heat generated by the high-temperature flue gas will be conducted through the heat-conducting tube. Then the nozzle will spray water to the heat-conducting tube, so that the water absorbs the heat on the surface of the heat-conducting tube. After the heat is absorbed, the water is discharged through the drain pipe, which facilitates the transportation of the high-temperature flue gas and effectively increases the time that the high-temperature flue gas stays in the treatment box, so that the efficiency of the water source in absorbing heat is greatly improved, so that the heat exchange between the water source and the high-temperature flue gas is uniform. 2. The high-temperature flue gas is discharged into the filter box through the air outlet and filtered through the first and second filters inside the frame. Because the length of the two upper guide grooves is smaller than the two lower guide grooves, as the frame is pulled, the two upper guide blocks will gradually disengage from the guide grooves and eventually be removed from the filter box, facilitating the filtration of the high-temperature flue gas after absorbing heat and preventing the emission of particulate matter inside the high-temperature flue gas from polluting the surrounding environment. It also facilitates the removal of the first and second filters to ensure the filtration efficiency of the first and second filters for the high-temperature flue gas. 3. The cover plate is overlapped with the filter box so that the cover plate limits the two guide blocks located above. Then, bolts are inserted into the mounting plate and the mounting groove to fix the cover plate. After rotating the limit plate, the position of the limit plate gradually shifts with the through hole above the smoke outlet pipe, allowing the high-temperature flue gas to be discharged through the through hole, facilitating the limit of the guide blocks, so that the frame is stably fixed inside the filter box, and also facilitating the sealing of the smoke outlet pipe, so as to control the timing of high-temperature flue gas emission and prevent impurities from entering the filter box through the through hole.

[0004] However, when implementing the above technical solution, there are some issues that need to be considered: when the equipment is in use, impurities in the flue gas will adhere to the pipe, resulting in a decrease in heat transfer capacity and heat recovery rate. At the same time, pipe blockage will cause a decrease in ventilation volume, affecting combustion. Utility Model Content

[0005] The purpose of the present invention is to provide a coal-fired boiler energy recovery device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal-fired boiler energy recovery device, comprising a heat exchange box and a cleaning mechanism, flue gas outlets are provided on both sides of the heat exchange box, a cleaning mechanism is provided on one side of the flue gas outlet, a heat exchange tube is provided inside the heat exchange box, a threaded rod is connected above the heat exchange tube, a corrugated sleeve is provided on the outside of the threaded rod, a vibrator is provided below the flue gas outlet, a rotating baffle is provided below the heat exchange tube, and a slide rail is provided below the heat exchange box.

[0007] Preferably, the movement of the threaded rod is connected to a rotating motor, a limit rod is provided above the threaded rod, and a sliding block is slidably connected to the outer side of the limit rod.

[0008] Preferably, two groups of the corrugated sleeves are provided, one end of the corrugated sleeve is connected to the heat exchange box, and the other end of the corrugated sleeve is connected to the sliding block.

[0009] Preferably, vertical plates are provided on both sides of the sliding block, and brushes are provided on the inner sides of the vertical plates, and the brushes match the size of the heat exchange tubes.

[0010] Preferably, two groups of vibrators are provided, the vibrators are fixedly connected to the heat exchange box, and the vibrators are located on the lower slope of the heat exchange box.

[0011] Preferably, the rotating baffle is tightly fitted with the heat exchange box, the rotating baffle and the heat exchange box are rotatably connected, and a rotating handle is provided on the front of the rotating baffle.

[0012] Preferably, a collecting bucket is slidably connected to the outer side of the slide rail, and the collecting bucket forms a movable structure with the heat exchange box through the slide groove and the slide rail. The size of the collecting bucket matches that of the heat exchange box.

[0013] Preferably, an observation window is provided on the front of the collecting hopper, the observation window is made of glass, and the observation window is height-matched with the collecting hopper.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model is provided with a threaded rod, a rotating motor, a limiting rod and a sliding block. When the rotating motor works, the threaded rod is driven to rotate, so that the sliding block moves. When a vertical plate and a brush are provided, the vertical plate moves, so that the brush cleans the flue gas impurities on the surface of the heat exchange tube, thereby improving the heat conduction efficiency of the heat exchange tube. When a corrugated sleeve is provided, the corrugated sleeve can prevent impurities in the flue gas from adhering to the surface of the threaded rod and affecting the movement of the sliding block. When a vibrator is provided, the vibrator works and transports the impurities cleaned by the brush to a collection bucket below the heat exchange box.

[0016] The utility model provides a collecting bucket, a chute and a slide rail, and the collecting bucket collects impurities. The chute and the slide rail cooperate to quickly replace the collecting bucket. An observation window is provided, through which the amount of impurities collected in the collecting bucket can be understood, to prevent the convenience of cleaning work from being affected by excessive impurities. A rotating baffle and a rotating handle are provided, and when replacing the collecting bucket, the rotating handle is turned to level the rotating baffle, so that the bottom of the heat exchange box is sealed to prevent impurities from leaking out again. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0019] Figure 3 This is a schematic diagram of the threaded rod, rotary motor, limit rod, sliding block, corrugated sleeve, vertical plate and brush of the utility model.

[0020] Figure 4 This is a schematic diagram of the collection bucket, chute and observation window of the utility model.

[0021] In the figure: 1. Heat exchange box; 2. Flue gas outlet; 3. Cleaning mechanism; 301. Heat exchange tube; 302. Threaded rod; 303. Rotating motor; 304. Limit rod; 305. Sliding block; 306. Corrugated sleeve; 307. Vertical plate; 308. Brush; 309. Vibrator; 310. Rotating baffle; 311. Rotating handle; 312. Slide rail; 313. Collecting bucket; 314. Slide chute; 315. Observation window. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] 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 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.

[0026] See also Figure 1-4 The utility model provides an embodiment: a coal-fired boiler energy recovery device, including a heat exchange box 1 and a cleaning mechanism 3, flue gas outlets 2 are provided on both sides of the heat exchange box 1, and a cleaning mechanism 3 is provided on one side of the flue gas outlet 2. A heat exchange tube 301 is provided inside the heat exchange box 1, a threaded rod 302 is connected above the heat exchange tube 301, and a corrugated sleeve 306 is provided on the outside of the threaded rod 302. A vibrator 309 is provided below the flue gas outlet 2, a rotating baffle 310 is provided below the heat exchange tube 301, and a slide rail 312 is provided below the heat exchange box 1.

[0027] Specifically, the threaded rod 302 is connected to the movement of the rotating motor 303, a limit rod 304 is set above the threaded rod 302, and the outer side of the limit rod 304 is slidably connected to the sliding block 305. When the rotating motor 303 works, it drives the threaded rod 302 to rotate and moves the sliding block 305.

[0028] Specifically, two groups of corrugated sleeves 306 are provided, one end of the corrugated sleeve 306 is connected to the heat exchange box 1, and the other end of the corrugated sleeve 306 is connected to the sliding block 305. The corrugated sleeve 306 can prevent impurities in the flue gas from adhering to the surface of the threaded rod 302 and affecting the movement of the sliding block 305.

[0029] Specifically, vertical plates 307 are provided on both sides of the sliding block 305, and brushes 308 are provided on the inner side of the vertical plates 307. The brushes 308 match the size of the heat exchange tube 301. When the vertical plates 307 move, the brushes 308 clean the flue gas impurities on the surface of the heat exchange tube 301, thereby improving the thermal conductivity of the heat exchange tube 301.

[0030] Specifically, two groups of vibrators 309 are provided, and the vibrators 309 are fixedly connected to the heat exchange box 1 . The vibrators 309 are located on the slope below the heat exchange box 1 . When the vibrators 309 work, the impurities cleaned by the brushes 308 are transported to the collection bucket 313 below the heat exchange box 1 .

[0031] Specifically, the rotating baffle 310 fits tightly with the heat exchange box 1, and the rotating baffle 310 and the heat exchange box 1 are rotationally connected. A rotating handle 311 is provided on the front of the rotating baffle 310. When replacing the collecting bucket 313, the rotating handle 311 is turned to flatten the rotating baffle 310 to seal the bottom of the heat exchange box 1 to prevent impurities from leaking out.

[0032] Specifically, the outer side of the slide rail 312 is slidably connected to a collecting bucket 313. The collecting bucket 313 forms a movable structure with the heat exchange box 1 through the slide groove 314 and the slide rail 312. The collecting bucket 313 matches the size of the heat exchange box 1. The collecting bucket 313 collects impurities. The slide groove 314 and the slide rail 312 cooperate to quickly replace the collecting bucket 313.

[0033] Specifically, an observation window 315 is provided on the front of the collection bucket 313. The observation window 315 is made of glass and is highly matched with the collection bucket 313. The amount of impurities collected in the collection bucket 313 can be understood through the observation window 315 to prevent excessive impurities from affecting the convenience of cleaning work.

[0034] Working principle: First, the flue gas enters the heat exchange box 1 from the flue gas port 2 and heats the material to be heated in the heat exchange tube 301. After long-term operation, when a certain amount of impurities in the flue gas adhere to it, the rotating motor 303 starts to work, driving the threaded rod 302 to rotate, so that the sliding block 305 moves, the vertical plate 307 moves, and the brush 308 cleans the flue gas impurities on the surface of the heat exchange tube 301, thereby improving the heat conduction efficiency of the heat exchange tube 301. The corrugated sleeve 306 can prevent the impurities in the flue gas from adhering to the surface of the threaded rod 302, affecting the heat transfer efficiency of the heat exchange tube 301. The sliding block 305 moves, and then the vibrator 309 works to transport the impurities cleaned by the brush 308 to the collection bucket 313 below the heat exchange box 1. The amount of impurities collected in the collection bucket 313 can be understood through the observation window 315 to prevent excessive impurities from affecting the convenience of cleaning work. When a certain amount of impurities are collected, the rotating handle 311 is turned to flatten the rotating baffle 310 to seal the bottom of the heat exchange box 1 to prevent impurities from leaking out again. The slide groove 314 and the slide rail 312 cooperate to quickly replace the collection bucket 313.

[0035] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A coal-fired boiler energy recovery device, comprising a heat exchange box (1) and a cleaning mechanism (3), characterized in that: Smoke outlets (2) are provided on both sides of the heat exchange box (1), a cleaning mechanism (3) is provided on one side of the smoke outlet (2), a heat exchange tube (301) is provided inside the heat exchange box (1), a threaded rod (302) is connected above the heat exchange tube (301), a corrugated sleeve (306) is provided on the outside of the threaded rod (302), a vibrator (309) is provided below the smoke outlet (2), a rotating baffle (310) is provided below the heat exchange tube (301), and a slide rail (312) is provided below the heat exchange box (1).

2. The coal-fired boiler energy recovery device according to claim 1, characterized in that: The threaded rod (302) is connected to a rotating motor (303) for movement. A limiting rod (304) is provided above the threaded rod (302). The outer side of the limiting rod (304) is slidably connected to a sliding block (305).

3. The coal-fired boiler energy recovery device according to claim 1, characterized in that: The corrugated sleeves (306) are provided in two groups, one end of the corrugated sleeves (306) is connected to the heat exchange box (1), and the other end of the corrugated sleeves (306) is connected to the sliding block (305).

4. The coal-fired boiler energy recovery device according to claim 2, characterized in that: Vertical plates (307) are provided on both sides of the sliding block (305), and brushes (308) are provided on the inner sides of the vertical plates (307). The brushes (308) match the size of the heat exchange tube (301).

5. The coal-fired boiler energy recovery device according to claim 1, characterized in that: Two groups of the vibrators (309) are provided. The vibrators (309) are fixedly connected to the heat exchange box (1). The vibrators (309) are located on the lower inclined surface of the heat exchange box (1).

6. The coal-fired boiler energy recovery device according to claim 1, characterized in that: The rotating baffle (310) is tightly fitted with the heat exchange box (1), the rotating baffle (310) and the heat exchange box (1) are rotationally connected, and a rotating handle (311) is provided on the front of the rotating baffle (310).

7. The coal-fired boiler energy recovery device according to claim 1, characterized in that: The outer side of the slide rail (312) is slidably connected to a collecting bucket (313), and the collecting bucket (313) forms a movable structure with the heat exchange box (1) through the slide groove (314) and the slide rail (312), and the size of the collecting bucket (313) matches that of the heat exchange box (1).

8. The coal-fired boiler energy recovery device according to claim 7, characterized in that: An observation window (315) is provided on the front of the collecting hopper (313); the observation window (315) is made of glass, and the height of the observation window (315) matches that of the collecting hopper (313).

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