Flue gas low-temperature waste heat utilization assembly of gas-fired boiler

Abstract

The utility model discloses a gas-fired boiler flue gas low-temperature waste heat utilization assembly, which relates to the technical field, and comprises a pump body, one end of the pump body is provided with an end part I, the other end of the pump body is provided with an end part II, after a shaft end connected with a motor is connected with a transmission shaft, the transmission shaft can drive an auxiliary gear to rotate through a main gear after the motor works, and the auxiliary gear is driven to rotate through a driven gear. The rotation of the spiral blade can make the waste heat smoke entering from the smoke inlet in the pump body flow more evenly, and water entering the annular pipe from the water inlet pipe is discharged into the branch pipes, then discharged into the water outlet pipe through the branch pipes in a unified mode and finally discharged through the water outlet pipe. According to the pipeline arrangement mode, more sufficient waste heat conversion can be achieved by means of rotation of the spiral blades, meanwhile, the branch pipes and the water outlet pipe can become pipelines for waste heat conversion at the two ends, waste heat conversion is more sufficient, and waste of generated waste heat is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler equipment, in particular to a gas boiler flue gas low-temperature waste heat utilization component. Background Art

[0002] According to the application number "CN201621486100.0", by starting the electric motor, the electric motor drives the rotating shaft installed in the pump body through the rotating shaft, so that the threaded blades inside the pump body rotate, and drive the ultra-low temperature flue gas to flow. When passing through the inside of the pump body, heat exchange is carried out with the water pipe installed in the wall of the pump body. Due to the large contact area and the circulating water pipe arranged inside the pump body, the ultra-low temperature flue gas can fully absorb heat in the process of being discharged from the pump body, thereby realizing ultra-low temperature waste heat recovery.

[0003] In the process of implementing this solution, the inventors found that the following problems in the prior art have not been well solved: the water inlet pipe is located on the outside of the pump body, and the contact area with the internal residual temperature is small. Even if the residual heat is accelerated in the pump body through spiral blades, the residual temperature recovery rate will be low due to the small contact area between the water inlet pipe and the residual temperature, and a better waste heat recovery effect cannot be achieved. Utility Model Content

[0004] The main purpose of the utility model is to provide a gas boiler flue gas low-temperature waste heat utilization component, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A low-temperature waste heat utilization component for flue gas of a gas boiler comprises a pump body, wherein one end of the pump body is provided with an end 1, and the other end of the pump body is provided with an end 2, an end of the end 1 away from the pump body is provided with an output port, an end of the end 2 away from the pump body is provided with a liquid outlet port, and both ends of the top of the end 2 are provided with liquid inlet ports, a transmission shaft is inserted through the inside of the output port, a main gear is fixed to the end of the transmission shaft inserted into the inside of the end 1, four sub-gears are meshed and connected to the outer wall of the main gear, and spiral blades are fixed to the ends of the sub-gears close to the end 2, an annular tube is provided inside the end 2, water inlet pipes are provided at both ends of the top of the annular tube, four branch pipes are provided inside the annular tube, a water outlet pipe is inserted inside the liquid outlet port, the water outlet pipe passes through one end of the liquid outlet port and is inserted into an end of the pump body close to the end 1, and one end of the annular tube away from the water inlet pipe is respectively connected to one end of the water outlet pipe close to the end 1, a smoke inlet is provided on the front side of one end of the pump body close to the end 1, and a smoke outlet is provided at one end of the top of the pump body close to the end 2.

[0007] Preferably, one end of the water inlet pipe away from the annular pipe is connected to the liquid inlet port.

[0008] Preferably, a sealing component is installed at the penetration point between the water inlet pipe and the liquid inlet port, and a sealing component is installed at the penetration point between the water outlet pipe and the liquid outlet port.

[0009] Preferably, each of the branch pipes is located between adjacent spiral blades.

[0010] Preferably, one end of the spiral blade away from the auxiliary gear is rotatably connected to the inner wall of end two, and a secondary shaft is fixed to one end of the auxiliary gear away from the spiral blade, and one end of the secondary shaft away from the auxiliary gear is rotatably connected to the inner wall of end one, and the transmission shaft and the main gear are rotatably connected via a sealed bearing.

[0011] Preferably, the auxiliary gears are respectively sleeved on the outside of the four spiral blades, and the length of the blades on each of the spiral blades does not exceed the end of the pump body away from the end.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] After the shaft end connected to the motor is connected to the transmission shaft, the transmission shaft can drive the sub-gear to rotate through the main gear after the motor is working, thereby driving the spiral blades to rotate together. The rotation of the spiral blades can make the residual heat flue gas entering the pump body from the smoke inlet flow more evenly, and the moisture entering the annular pipe through the water inlet pipe is discharged to the inside of the branch pipe, and then discharged into the water outlet pipe by the branch pipe, and finally discharged from the water outlet pipe. This pipeline arrangement method can not only obtain more sufficient waste heat conversion with the help of the rotation of the spiral blades, but also the branch pipe and the water outlet pipe can become pipelines for waste heat conversion at both ends, so that the waste heat conversion is more sufficient and the waste heat is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a gas boiler flue gas low-temperature waste heat utilization component of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure between the pump body, the first end and the second end of a gas boiler flue gas low-temperature waste heat utilization component of the utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure between the main gear and the auxiliary gear of a gas boiler flue gas low-temperature waste heat utilization component of the utility model;

[0017] Figure 4 The utility model is a schematic structural diagram of a gas boiler flue gas low-temperature waste heat utilization component in which branch pipes are located between spiral blades.

[0018] In the figure: 1, pump body; 11, smoke outlet; 12, smoke inlet; 2, end one; 21, output port; 3, end two; 31, liquid outlet port; 32, liquid inlet port; 4, water outlet pipe; 41, branch pipe; 42, annular pipe; 43, water inlet pipe; 5, transmission shaft; 51, main gear; 52, sub-gear; 53, sub-shaft; 54, spiral blade. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-4 As shown, a gas boiler flue gas low-temperature waste heat utilization component includes a pump body 1, one end of the pump body 1 is provided with an end portion 2, the other end of the pump body 1 is provided with an end portion 3, the end of the end portion 2 away from the pump body 1 is provided with an output port 21, the end of the end portion 23 away from the pump body 1 is provided with a liquid outlet port 31, and the top two ends of the end portion 23 are provided with liquid inlet ports 32, and a transmission shaft 5 is inserted through the inside of the output port 21, and a main gear 51 is fixed to the end of the transmission shaft 5 inserted into the end portion 2, and the outer wall of the main gear 51 is meshed and connected with four sub-gears 52, and the sub-gear 52 is close to the end portion 23. A spiral blade 54 is fixed at one end, an annular tube 42 is arranged inside the end part 23, water inlet pipes 43 are arranged at both ends of the top of the annular tube 42, four branch pipes 41 are arranged inside the annular tube 42, a water outlet pipe 4 is inserted into the liquid outlet port 31, the water outlet pipe 4 passes through one end of the liquid outlet port 31 and is inserted into the end of the pump body 1 near the end part 2, one end of the annular tube 42 away from the water inlet pipe 43 is respectively connected to the end of the water outlet pipe 4 near the end part 2, a smoke inlet 12 is arranged on the front side of the end of the pump body 1 near the end part 2, and a smoke outlet 11 is arranged at the top of the pump body 1 near the end part 23.

[0021] Specifically, one end of the water inlet pipe 43 away from the annular pipe 42 is connected to the liquid inlet port 32 .

[0022] Specifically, a sealing assembly is installed at the penetration between the water inlet pipe 43 and the liquid inlet port 32, and a sealing assembly is installed at the penetration between the water outlet pipe 4 and the liquid outlet port 31 to prevent smoke leakage. The gas sealing assembly is a public and mature prior art and will not be described in detail in this application.

[0023] Specifically, each branch pipe 41 is located between adjacent spiral blades 54. When the spiral blades 54 rotate to draw the flue gas to flow, the residual heat can be evenly contacted with each branch pipe 41 and the water outlet pipe 4, thereby achieving a better heat exchange effect.

[0024] Specifically, one end of the spiral blade 54 away from the auxiliary gear 52 is rotatably connected to the inner wall of the end part 2 3, and one end of the auxiliary gear 52 away from the spiral blade 54 is fixed with a secondary shaft 53. One end of the secondary shaft 53 away from the auxiliary gear 52 is rotatably connected to the inner wall of the end part 2. The transmission shaft 5 and the main gear 51 are rotatably connected through a sealed bearing to ensure the stability and sealing of the rotation. The sealed bearing is a practical technology and will not be described in detail in the drawings of this application.

[0025] Specifically, the sub-gears 52 are respectively sleeved on the outside of the four spiral blades 54, and the length of the blade on each spiral blade 54 does not exceed the end of the pump body 1 away from the end 2, so as to avoid the blades hitting the annular tube 42 when rotating and causing damage to it.

[0026] Working principle: After the shaft end connected to the motor is connected to the transmission shaft 5, the transmission shaft 5 can drive the sub-gear 52 to rotate through the main gear 51 after the motor is working, thereby driving the spiral blade 54 to rotate together. The rotation of the spiral blade 54 can make the residual heat flue gas entering the pump body 1 from the smoke inlet 12 flow more evenly, and the moisture entering the annular pipe 42 through the water inlet pipe 43 is discharged to the inside of the branch pipe 41, and then discharged into the water outlet pipe 4 by the branch pipe 41, and finally discharged from the water outlet pipe 4. This pipeline arrangement method can not only obtain more sufficient waste heat conversion with the help of the rotation of the spiral blade 54, but also the branch pipe 41 and the water outlet pipe 4 can become pipelines for waste heat conversion at both ends, so that the waste heat conversion is more sufficient and the waste heat is avoided.

[0027] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas boiler flue gas low temperature waste heat utilization component, comprising a pump body (1), characterized in that: One end of the pump body (1) is provided with an end portion 1 (2), and the other end of the pump body (1) is provided with an end portion 2 (3). An output port (21) is provided at the end of the end portion 1 (2) away from the pump body (1), and a liquid outlet port (31) is provided at the end of the end portion 2 (3) away from the pump body (1). Liquid inlet ports (32) are provided at both ends of the top of the end portion 2 (3). A transmission shaft (5) is inserted through the interior of the output port (21). A main gear (51) is fixed to the end of the transmission shaft (5) inserted into the interior of the end portion 1 (2). Four sub-gears (52) are meshedly connected to the outer wall of the main gear (51), and spiral blades (54) are fixed to the ends of the sub-gears (52) close to the end portion 2 (3). The second end (3) is provided with an annular tube (42) inside, and water inlet pipes (43) are provided at both ends of the top of the annular tube (42). Four branch pipes (41) are provided inside the annular tube (42). A water outlet pipe (4) is inserted into the liquid outlet port (31). One end of the water outlet pipe (4) passes through the liquid outlet port (31) and is inserted into the end of the pump body (1) near the first end (2). One end of the annular tube (42) away from the water inlet pipe (43) is respectively connected to one end of the water outlet pipe (4) near the first end (2). A smoke inlet (12) is provided on the front side of one end of the pump body (1) near the first end (2), and a smoke outlet (11) is provided at one end of the top of the pump body (1) near the second end (3).

2. A gas boiler flue gas low temperature waste heat utilization component according to claim 1, characterized in that: One end of the water inlet pipe (43) away from the annular pipe (42) is connected to the liquid inlet port (32).

3. A gas boiler flue gas low temperature waste heat utilization component according to claim 1, characterized in that: A sealing component is installed at the penetration point between the water inlet pipe (43) and the liquid inlet port (32), and a sealing component is installed at the penetration point between the water outlet pipe (4) and the liquid outlet port (31).

4. A gas boiler flue gas low temperature waste heat utilization component according to claim 1, characterized in that: Each branch pipe (41) is located between adjacent spiral blades (54).

5. A gas boiler flue gas low temperature waste heat utilization component according to claim 1, characterized in that: One end of the spiral blade (54) away from the auxiliary gear (52) is rotatably connected to the inner side wall of the second end (3); one end of the auxiliary gear (52) away from the spiral blade (54) is fixed with a secondary shaft (53); one end of the secondary shaft (53) away from the auxiliary gear (52) is rotatably connected to the inner side wall of the first end (2); and the transmission shaft (5) and the main gear (51) are rotatably connected via a sealed bearing.

6. A gas boiler flue gas low temperature waste heat utilization component according to claim 1, characterized in that: The auxiliary gears (52) are respectively sleeved on the outside of the four spiral blades (54), and the length of the blade on each spiral blade (54) does not exceed the end of the pump body (1) away from the end one (2).

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