Boiler flue gas waste heat recovery device with cleaning function

Abstract

The utility model relates to the technical field of boiler heating, and discloses a boiler flue gas waste heat recovery device with a cleaning function, which comprises a steam-water assembly, the bottom of the steam-water assembly is fixedly connected with a hearth, the front surface of the hearth is movably connected with a material supplementing port, and the bottom of the hearth is fixedly connected with a sewage draining port. The center of the steam-water assembly is fixedly connected with a smoke exhaust pipeline, the outer side of the other side of the smoke exhaust pipeline is fixedly sleeved with a waste heat treatment assembly, and the bottom of the waste heat treatment assembly is fixedly connected with a water supply pipeline; through mutual cooperation of the water tank assembly and the cleaning assembly, when heat energy in the smoke exhaust pipeline cannot be fully absorbed by water in the heating water tank any more and part of residual heat energy reaches the top of the smoke exhaust pipeline, the temperature of water in the water tank assembly is gradually increased, and after a part of water in the heating water tank is taken, liquid can be supplemented to the water in the heating water tank through the water supply pipeline; the supplemented water temperature is higher than normal-temperature water, so that heat energy needed for heating water in the heating water tank is reduced, and the waste heat utilization rate is continuously increased.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler heating, and more particularly to a boiler flue gas waste heat recovery device with a cleaning function. Background Art

[0002] A boiler consists of two main parts: the "pot" and the "furnace." The "pot" is the pressurized component that holds water and steam, heating, vaporizing, and separating the water. The "furnace" is where fuel combustion or other heat release occurs, and includes the combustion equipment, combustion chamber, and heat-release flue.

[0003] Existing boilers still waste waste heat during use. When the smoke generated by coal combustion in the furnace is discharged from the pipe, there is heat in the pipe that can heat the water. After passing through the heating system, some waste heat is still not utilized in the pipe, resulting in heat energy loss. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a boiler flue gas waste heat recovery device with a cleaning function to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a boiler flue gas waste heat recovery device with a cleaning function, comprising a steam-water component, the bottom of the steam-water component is fixedly connected to a furnace, the front of the furnace is movably connected to a feeding port, the bottom of the furnace is fixedly connected to a sewage outlet, the center of the steam-water component is fixedly connected to a smoke exhaust pipe, the outer side of the other side of the smoke exhaust pipe is fixedly sleeved with a waste heat treatment component, the bottom of the waste heat treatment component is fixedly connected to a water supply pipe, the waste heat treatment component comprises a water tank component and a cleaning component, and a bearing is provided at the connection between the cleaning component and the water tank component.

[0006] Furthermore, a second mounting bracket is fixedly connected to the top of the water tank assembly, a driving motor is fixedly installed on the top of the second mounting bracket, an output shaft of the driving motor is fixedly connected to a rotating shaft, a first mounting bracket is sleeved on the outer side of the rotating shaft, a bearing is provided at the connection between the first mounting bracket and the rotating shaft, and a driving gear is fixedly connected to the other side of the rotating shaft.

[0007] Furthermore, the cleaning assembly includes a sealing cover, the other side of the sealing cover is fixedly connected to a driven gear, a second circular hole is opened in the center of the other side of the sealing cover, and one side of the sealing cover is fixedly connected to a cleaning scraper.

[0008] Furthermore, the water tank assembly includes a supply water tank, and a first circular hole is opened on one side of the supply water tank.

[0009] Furthermore, the steam-water assembly includes a heating water tank, a water inlet pipe is fixedly connected to the front of the heating water tank, a drainage pipe is fixedly connected to the other side of the heating water tank, a mounting hole is provided at the bottom of the heating water tank, the bottom of the smoke exhaust pipe is fixedly connected to the inner side of the mounting hole, a supply port is provided at the top of the other side of the heating water tank, and the inner side of the supply port is fixedly connected to the bottom of the water supply pipe.

[0010] Furthermore, the sum of the height of the two cleaning scrapers and the inner diameter of the second circular hole is the inner diameter of the supply water tank, and the inner diameters of the first circular hole and the second circular hole are both matched with the outer diameter tolerance of the smoke exhaust pipe.

[0011] Furthermore, the teeth of the driving gear and the teeth of the driven gear are meshed with each other.

[0012] Technical effects and advantages of this utility model:

[0013] 1. The utility model is provided with a water tank assembly and a cleaning assembly that cooperate with each other. When the heat energy in the smoke exhaust pipe can no longer be fully absorbed by the water in the heating water tank, the residual heat energy reaches the top of the smoke exhaust pipe, and the water temperature in the water tank assembly gradually increases. After a part of the water in the heating water tank is taken, the water in the heating water tank can be replenished through the water supply pipe. The replenished water temperature is higher than that of normal temperature water, which reduces the heat energy required to heat the water in the heating water tank and continuously improves the utilization rate of waste heat.

[0014] 2. The utility model is provided with a waste heat treatment component. When the boiler is used once, some water still remains in the water tank assembly and the heating water tank. At this time, the drive motor is started to drive the active gear to rotate, thereby driving the driven gear, the sealing cover and the cleaning scraper to rotate. The cleaning scraper scrapes the inner wall of the water tank assembly to remove scale. The scale and the residual water are discharged into the heating water tank through the water supply pipe and discharged from the drainage pipe together with the waste liquid from cleaning the heating water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is an exploded schematic diagram of the overall cross-sectional structure of the present invention.

[0017] Figure 3 This is a schematic structural diagram of the waste heat treatment component of the present utility model.

[0018] Figure 4 This is a schematic structural diagram of the cleaning component of the present utility model.

[0019] Figure 5 This is a schematic structural diagram of the water tank assembly of the present utility model.

[0020] The figures are marked as follows: 1. Steam-water assembly; 101. Heating water tank; 102. Mounting hole; 103. Water inlet pipe; 104. Drain pipe; 105. Feed port; 2. Furnace; 3. Feed port; 4. Drain port; 5. Smoke exhaust pipe; 6. Waste heat treatment assembly; 601. Water tank assembly; 6011. Feed water tank; 6012. First circular hole; 602. Cleaning assembly; 6021. Sealing cover; 6022. Driven gear; 6023. Second circular hole; 6024. Cleaning scraper; 603. Driving gear; 604. Rotating shaft; 605. First mounting bracket; 606. Drive motor; 607. Second mounting bracket; 7. Water supply pipe. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely examples. The boiler flue gas waste heat recovery device with a cleaning function involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Reference Figures 1 to 5 The utility model provides a boiler flue gas waste heat recovery device with a cleaning function, including a steam-water component 1, the bottom of the steam-water component 1 is fixedly connected to the furnace 2, the front of the furnace 2 is movably connected to the feeding port 3, the bottom of the furnace 2 is fixedly connected to the sewage outlet 4, the center of the steam-water component 1 is fixedly connected to the smoke exhaust pipe 5, the outer side of the other side of the smoke exhaust pipe 5 is fixedly sleeved with a waste heat treatment component 6, the bottom of the waste heat treatment component 6 is fixedly connected to a water supply pipe 7, the waste heat treatment component 6 includes a water tank component 601 and a cleaning component 602, a bearing is provided at the connection between the cleaning component 602 and the water tank component 601, and a liquid inlet is provided at the top of the water tank component 601; before coal is put in for combustion, cold water is injected into the water tank component 601 through the liquid inlet of the water tank component 601, the water tank component 601 is sealed by the cleaning component 602, and when the sealing cover 6021 rotates, the water tank component 601 can remain stationary.

[0023] In a preferred embodiment, the top of the water tank assembly 601 is fixedly connected to a second mounting bracket 607, the top of the second mounting bracket 607 is fixedly mounted with a drive motor 606, the output shaft of the drive motor 606 is fixedly connected to the rotating shaft 604, the outer side of the rotating shaft 604 is sleeved with a first mounting bracket 605, a bearing is provided at the connection between the first mounting bracket 605 and the rotating shaft 604, and the other side of the rotating shaft 604 is fixedly connected to a driving gear 603.

[0024] In a preferred embodiment, the cleaning assembly 602 includes a sealing cover 6021, a driven gear 6022 is fixedly connected to the other side of the sealing cover 6021, a second circular hole 6023 is opened in the center of the other side of the sealing cover 6021, and a cleaning scraper 6024 is fixedly connected to one side of the sealing cover 6021.

[0025] In a preferred embodiment, the water tank assembly 601 includes a supply water tank 6011 , and a first circular hole 6012 is formed on one side of the supply water tank 6011 .

[0026] In a preferred embodiment, the steam-water assembly 1 includes a heating water tank 101, a water inlet pipe 103 is fixedly connected to the front of the heating water tank 101, a drainage pipe 104 is fixedly connected to the other side of the heating water tank 101, a mounting hole 102 is provided at the bottom of the heating water tank 101, the bottom of the smoke exhaust pipe 5 is fixedly connected to the inner side of the mounting hole 102, and a supply port 105 is provided at the top of the other side of the heating water tank 101, and the inner side of the supply port 105 is fixedly connected to the bottom of the water supply pipe 7.

[0027] In a preferred embodiment, the sum of the height of the two cleaning scrapers 6024 and the inner diameter of the second circular hole 6023 is the inner diameter of the supply water tank 6011, and the inner diameter of the first circular hole 6012 and the inner diameter of the second circular hole 6023 are both matched with the outer diameter tolerance of the smoke exhaust pipe 5.

[0028] In a preferred embodiment, the teeth of the driving gear 603 mesh with the teeth of the driven gear 6022; the drive motor 606 is started to drive the driving gear 603 to rotate, thereby driving the driven gear 6022, the sealing cover 6021 and the cleaning scraper 6024 to rotate, and the cleaning scraper 6024 scrapes the inner wall of the water tank assembly 601 to remove scale.

[0029] The working principle of the present invention is as follows: in the process of using a boiler to heat water, cold water is first injected into the water tank assembly 601 through the liquid inlet of the water tank assembly 601 before putting coal into the combustion, the water tank assembly 601 is sealed by the cleaning assembly 602, the feeding port 3 is opened to add coal to the furnace 2 and the feeding port 3 is closed after ignition, and the smoke generated by the combustion is discharged from the smoke exhaust pipe 5, the bottom of the smoke exhaust pipe 5 is connected to the inner side of the furnace 2 and leads to the outside world. During the smoke emission process, part of the heat energy will be filled in the smoke exhaust pipe 5 to heat the water in the heating water tank 101. After burning for a period of time, the temperature of the water in the heating water tank 101 is The temperature gradually rises after absorbing the heat from the furnace 2 and the smoke exhaust pipe 5. The heat energy in the smoke exhaust pipe 5 can no longer be fully absorbed by the water in the heating water tank 101. The remaining heat energy reaches the top of the smoke exhaust pipe 5. The water temperature in the water tank assembly 601 gradually increases. After a part of the water in the heating water tank 101 is taken out, the water in the heating water tank 101 can be replenished through the water supply pipe 7. The replenished water temperature is higher than that of normal temperature water, which reduces the heat energy required to heat the water in the heating water tank 101 and continuously improves the waste heat utilization rate. After the replenishment operation in the water tank assembly 601 is completed, normal temperature water is injected again through the liquid inlet of the water tank assembly 601;

[0030] When the boiler is used once, some water still remains in the water tank assembly 601 and the heating water tank 101. At this time, the drive motor 606 is started to drive the driving gear 603 to rotate, thereby driving the driven gear 6022, the sealing cover 6021 and the cleaning scraper 6024 to rotate. The cleaning scraper 6024 scrapes the inner wall of the water tank assembly 601 to remove scale. The scale and the remaining water are discharged into the heating water tank 101 through the water supply pipe 7, and are discharged from the drainage pipe 104 together with the cleaning waste liquid of the heating water tank 101.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0032] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0033] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A boiler flue gas waste heat recovery device with a cleaning function, comprising a steam-water assembly (1), the bottom of the steam-water assembly (1) is fixedly connected to a furnace (2), the front of the furnace (2) is movably connected to a feeding port (3), and the bottom of the furnace (2) is fixedly connected to a sewage outlet (4), characterized in that: The center of the steam-water component (1) is fixedly connected to a smoke exhaust pipe (5), the outer side of the other side of the smoke exhaust pipe (5) is fixedly sleeved with a waste heat treatment component (6), the bottom of the waste heat treatment component (6) is fixedly connected to a water supply pipe (7), the waste heat treatment component (6) includes a water tank component (601) and a cleaning component (602), and a bearing is provided at the connection between the cleaning component (602) and the water tank component (601).

2. The boiler flue gas waste heat recovery device with a cleaning function according to claim 1, characterized in that: The top of the water tank assembly (601) is fixedly connected to a second mounting bracket (607), the top of the second mounting bracket (607) is fixedly mounted with a driving motor (606), the output shaft of the driving motor (606) is fixedly connected to a rotating shaft (604), the outer side of the rotating shaft (604) is sleeved with a first mounting bracket (605), a bearing is provided at the connection between the first mounting bracket (605) and the rotating shaft (604), and the other side of the rotating shaft (604) is fixedly connected to a driving gear (603).

3. The boiler flue gas waste heat recovery device with a cleaning function according to claim 2, characterized in that: The cleaning assembly (602) comprises a sealing cover (6021), a driven gear (6022) is fixedly connected to the other side of the sealing cover (6021), a second circular hole (6023) is opened in the center of the other side of the sealing cover (6021), and a cleaning scraper (6024) is fixedly connected to one side of the sealing cover (6021).

4. The boiler flue gas waste heat recovery device with a cleaning function according to claim 3 is characterized in that: The water tank assembly (601) comprises a supply water tank (6011), and a first circular hole (6012) is opened on one side of the supply water tank (6011).

5. The boiler flue gas waste heat recovery device with a cleaning function according to claim 1, characterized in that: The steam-water assembly (1) comprises a heating water tank (101), a water inlet pipe (103) is fixedly connected to the front of the heating water tank (101), a drainage pipe (104) is fixedly connected to the other side of the heating water tank (101), a mounting hole (102) is provided at the bottom of the heating water tank (101), the bottom of the smoke exhaust pipe (5) is fixedly connected to the inner side of the mounting hole (102), a replenishing port (105) is provided at the top of the other side of the heating water tank (101), and the inner side of the replenishing port (105) is fixedly connected to the bottom of the water supply pipe (7).

6. The boiler flue gas waste heat recovery device with a cleaning function according to claim 4, characterized in that: The sum of the heights of the two cleaning scrapers (6024) and the inner diameter of the second circular hole (6023) is the inner diameter of the supply water tank (6011), and the inner diameters of the first circular hole (6012) and the second circular hole (6023) are both matched with the outer diameter tolerance of the smoke exhaust pipe (5).

7. The boiler flue gas waste heat recovery device with a cleaning function according to claim 3, characterized in that: The teeth of the driving gear (603) and the teeth of the driven gear (6022) are meshed with each other.

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