Waste heat utilization device for flue gas of gas-fired boiler

Abstract

The utility model relates to the field of gas-fired boilers, and discloses a gas-fired boiler flue gas waste heat utilization device which comprises a gas-fired boiler body, the rear side of the back face of the gas-fired boiler body is communicated with a gas outlet pipe, a placing plate is fixedly installed on the back face of the gas-fired boiler body, and a water storage tank is arranged on the back face of the gas-fired boiler body. The bottom of the water storage tank makes contact with the bottom of the inner wall of the containing plate, the top of the gas-fired boiler body communicates with a connecting pipe, limiting assemblies used for limiting the water storage tank are arranged on the two sides of the water storage tank correspondingly, and a connecting assembly used for connecting the gas outlet pipe is arranged on the top of the connecting pipe. According to the utility model, through the mutual cooperation of the mounting plate, the mounting rod, the rectangular groove and the rectangular block, when the water storage tank is placed on the placing plate, the mounting rod and the rectangular block can penetrate through the rectangular groove, when the rectangular block completely penetrates through the rectangular groove, the rectangular block can be rotated by 90 degrees, and the mounting plate and the gas boiler body can be limited.

Description

Technical Field

[0001] This utility model relates to the field of gas-fired boilers, and in particular to a waste heat utilization device for flue gas from a gas-fired boiler. Background Technology

[0002] Gas-fired boilers include gas-fired hot water boilers, gas-fired hot water boilers, and gas-fired steam boilers. Among them, gas-fired hot water boilers are also called gas-fired heating boilers and gas-fired bathing boilers. As the name suggests, gas-fired boilers refer to boilers that use gas as fuel. Compared with oil-fired boilers and electric boilers, gas-fired boilers are the most economical, so most people choose gas-fired boilers as boiler equipment for steam, heating, and bathing.

[0003] Gas-fired boilers are a common type of thermal energy equipment, widely used in industrial production, commercial and residential heating. However, during operation, the flue gas of gas-fired boilers usually carries a large amount of waste heat and is directly discharged into the atmosphere. This not only causes a huge waste of energy, but also reduces the utilization efficiency of the entire energy system. To address this issue, a waste heat utilization device for gas-fired boiler flue gas is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a waste heat utilization device for flue gas from a gas-fired boiler, which aims to improve the problem that in the prior art, flue gas from gas-fired boilers usually carries a large amount of waste heat and is directly discharged into the atmosphere, which not only causes a huge waste of energy, but also reduces the utilization efficiency of the entire energy system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A waste heat utilization device for flue gas from a gas-fired boiler includes a gas-fired boiler body, an exhaust pipe connected to the rear side of the back of the gas-fired boiler body, a placement plate fixedly installed on the back of the gas-fired boiler body, a water storage tank provided on the back of the gas-fired boiler body, the bottom of the water storage tank contacting the bottom of the inner wall of the placement plate, a connecting pipe connected to the top of the gas-fired boiler body, limiting components for limiting the water storage tank on both sides, a connecting component for connecting the exhaust pipe at the top of the connecting pipe, and a water outlet pipe connected to the front side of the gas-fired boiler body, with a valve connected to the surface of the water outlet pipe.

[0007] As a further description of the above technical solution:

[0008] The limiting component includes a mounting plate, which is fixedly installed on the inner side of the mounting plate and both sides of the water storage tank. Mounting rods are fixedly installed on the top and bottom of the back of the gas boiler body. The back of the mounting rods extends through to the back of the mounting plate and is slidably installed with the mounting plate. Two sets of rectangular grooves are opened on the back of each set of mounting plates. A rectangular block is rotatably installed on the back of the mounting rod. The front side of the rectangular block contacts the back of the mounting plate.

[0009] As a further description of the above technical solution:

[0010] A bolt is provided on the back of the rectangular block, the front end of the bolt penetrates into the interior of the mounting rod and is threaded onto the mounting rod, and the front side of the bolt contacts the back of the rectangular block;

[0011] As a further description of the above technical solution:

[0012] The top and bottom of the mounting plate are fixedly installed with reinforcing blocks, and the inner side of the reinforcing blocks and both sides of the water storage tank are fixedly installed.

[0013] As a further description of the above technical solution:

[0014] The connecting assembly includes a sliding sleeve, which is threadedly installed with a connecting pipe. A sealing ring is fixedly installed at the bottom of the sliding sleeve, and a sealing groove is opened at the top of the connecting pipe. The bottom of the sealing ring contacts the bottom of the inner wall of the sealing groove.

[0015] As a further description of the above technical solution:

[0016] A connecting rod is fixedly installed on the surface of the sliding sleeve, and a rubber ball is fixedly installed on the surface of the connecting rod;

[0017] As a further description of the above technical solution:

[0018] A reinforcing rod is fixedly installed on the back of the gas boiler body, and the top of the reinforcing rod is fixedly installed on the bottom of the placement plate.

[0019] This utility model has the following beneficial effects:

[0020] In this utility model, the mounting plate, mounting rod, rectangular groove, and rectangular block work together. When the water storage tank is placed on the mounting plate, the mounting rod and rectangular block will pass through the rectangular groove. When the rectangular block has passed through the rectangular groove, the rectangular block can be rotated 90 degrees, which can limit the mounting plate and the gas boiler body.

[0021] In this invention, the sliding sleeve, sealing ring, and sealing groove work together to allow the sealing ring to move to the bottom when the sliding sleeve is rotated. As the sealing ring moves to the bottom, it enters the sealing groove, thereby sealing the connection between the connecting pipe and the vent pipe and improving the heating efficiency of the water tank. Attached Figure Description

[0022] Figure 1 This utility model provides a front view structural diagram of the gas boiler body;

[0023] Figure 2 A rear view of the gas boiler body is provided for this utility model;

[0024] Figure 3 A structural schematic diagram of the water storage tank is provided for this utility model;

[0025] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0026] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0027] Legend:

[0028] 1. Gas boiler body; 2. Gas outlet pipe; 3. Placement plate; 4. Water storage tank; 5. Connecting pipe; 6. Limiting component; 61. Mounting plate; 62. Mounting rod; 63. Rectangular groove; 64. Rectangular block; 65. Bolt; 7. Connecting component; 71. Sliding sleeve; 72. Sealing ring; 73. Sealing groove; 74. Connecting rod; 75. Rubber ball; 8. Water outlet pipe; 9. Valve; 10. Reinforcing block; 11. Reinforcing rod. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1-5This utility model provides an embodiment of a waste heat utilization device for flue gas from a gas-fired boiler, comprising a gas-fired boiler body 1, an outlet pipe 2 connected to the rear side of the back of the gas-fired boiler body 1, a placement plate 3 fixedly installed on the back of the gas-fired boiler body 1, a water storage tank 4 provided on the back of the gas-fired boiler body 1, the bottom of the water storage tank 4 contacting the bottom of the inner wall of the placement plate 3, a connecting pipe 5 connected to the top of the gas-fired boiler body 1, limiting components 6 for limiting the water storage tank 4 on both sides, and a connecting component 7 for connecting the outlet pipe 2 to the top of the connecting pipe 5. The front of the gas boiler body 1 is connected to a water outlet pipe 8, and a valve 9 is connected to the surface of the water outlet pipe 8. First, the water storage tank 4 can be placed on the placement plate 3. Then, the water storage tank 4 can be limited by the limiting component 6. Next, the connecting pipe 5 and the gas outlet pipe 2 can be connected by the connecting component 7. Finally, cold water can be poured into the water storage tank 4. When the gas boiler body 1 is started, the flue gas in the gas boiler body 1 will be discharged through the gas outlet pipe 2. At this time, the heat in the gas outlet pipe 2 will heat the cold water in the water storage tank 4. After the cold water is heated, the valve 9 can be turned to discharge the hot water for use.

[0031] Reference Figure 1-5 The limiting component 6 includes a mounting plate 61, which is fixedly installed on the inner side of the mounting plate 61 and both sides of the water storage tank 4. Mounting rods 62 are fixedly installed on the top and bottom of the back of the gas boiler body 1. The back of the mounting rods 62 extends through to the back of the mounting plate 61 and is slidably installed with the mounting plate 61. Two sets of rectangular slots 63 are provided on the back of each set of mounting plates 61. A rectangular block 64 is rotatably mounted on the back of the mounting rods 62. The front of the rectangular block 64 contacts the back of the mounting plate 61. Through the cooperation of the mounting plate 61, mounting rods 62, rectangular slots 63, and rectangular blocks 64, when the water storage tank 4 is placed on the placement plate 3, the mounting rods 62 and rectangular blocks 64 will pass through the rectangular slots 63. When the rectangular blocks 64 have completely passed through the rectangular slots 63, the rectangular blocks 64 can be rotated 90 degrees, allowing the mounting plate to be adjusted. The mounting plate 61 and the gas boiler body 1 are limited. A bolt 65 is provided on the back of the rectangular block 64. The front end of the bolt 65 penetrates into the interior of the mounting rod 62 and is threaded into the mounting rod 62. The front side of the bolt 65 contacts the back of the rectangular block 64. With the setting of the bolt 65, when the rectangular block 64 limits the mounting plate 61, the bolt 65 limits the rectangular block 64 and the mounting rod 62, thereby preventing the rectangular block 64 from shaking and improving the stability when limiting the water storage tank 4. The top and bottom of the mounting plate 61 are fixedly installed with reinforcing blocks 10. The inner side of the reinforcing blocks 10 is fixedly installed with both sides of the water storage tank 4. With the setting of the reinforcing blocks 10, the strength of the mounting plate 61 can be strengthened, preventing the mounting plate 61 from being subjected to excessive force, which would cause the water storage tank 4 and the mounting plate 61 to detach.

[0032] Reference Figure 1-5The connecting assembly 7 includes a sliding sleeve 71, which is threaded onto a connecting pipe 5. A sealing ring 72 is fixedly installed at the bottom of the sliding sleeve 71, and a sealing groove 73 is formed at the top of the connecting pipe 5. The bottom of the sealing ring 72 contacts the bottom of the inner wall of the sealing groove 73. Through the cooperation of the sliding sleeve 71, the sealing ring 72, and the sealing groove 73, rotating the sliding sleeve 71 can drive the sealing ring 72 to move to the bottom. The sealing ring 72 moves to the bottom and enters the sealing groove 73, thereby sealing the connection between the connecting pipe 5 and the vent pipe 2, thus improving the heating efficiency of the water storage tank 4. The surface of the sliding sleeve 71... A connecting rod 74 is fixedly installed on the surface of the connecting rod 74, and a rubber ball 75 is fixedly installed on the surface of the connecting rod 74. Through the cooperation between the connecting rod 74 and the rubber ball 75, the connecting rod 74 can be rotated when the rubber ball 75 is rotated. The rotation of the connecting rod 74 drives the sliding sleeve 71 to rotate. At this time, the rubber ball 75 can effectively isolate the heat of the sliding sleeve 71. A reinforcing rod 11 is fixedly installed on the back of the gas boiler body 1. The top of the reinforcing rod 11 is fixedly installed on the bottom of the placement plate 3. The setting of the reinforcing rod 11 can strengthen the strength of the placement plate 3 and prevent the water storage tank 4 from being too heavy, which would cause the placement plate 3 to break.

[0033] Working principle: First, place the required water storage tank 4 on the placement plate 3. At this time, the mounting rod 62 and rectangular block 64 will pass through the rectangular groove 63. When the rectangular block 64 has completely passed through the rectangular groove 63, the rectangular block 64 can be rotated 90 degrees. Finally, the rectangular block 64 and the mounting rod 62 can be limited by the bolt 65, thereby limiting the water storage tank 4. Next, the rubber ball 75 can be rotated. The rotation of the rubber ball 75 drives the connecting rod 74 to rotate. The rotation of the connecting rod 74 drives the sliding sleeve 71 to move to the bottom. The movement of the sliding sleeve 71 to the bottom drives the sealing ring 72 to move to the bottom. The movement of the sealing ring 72 to the bottom will enter the sealing groove 73, thereby sealing the connection between the connecting pipe 5 and the gas outlet pipe 2. Finally, cold water can be poured into the water storage tank 4. When the gas boiler body 1 is started, the flue gas in the gas boiler body 1 will be discharged through the gas outlet pipe 2. At this time, the heat in the gas outlet pipe 2 will heat the cold water in the water storage tank 4. After the cold water is heated, the valve 9 can be turned to discharge the hot water for use.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waste heat utilization device for flue gas from a gas-fired boiler, comprising a gas-fired boiler body (1), characterized in that: The gas boiler body (1) has a gas outlet pipe (2) connected to the rear side of the back side. A placement plate (3) is fixedly installed on the back side of the gas boiler body (1). A water storage tank (4) is provided on the back side of the gas boiler body (1). The bottom of the water storage tank (4) is in contact with the bottom of the inner wall of the placement plate (3). A connecting pipe (5) is connected to the top of the gas boiler body (1). Limiting components (6) for limiting the water storage tank (4) are provided on both sides of the water storage tank (4). A connecting component (7) for connecting the gas outlet pipe (2) is provided on the top of the connecting pipe (5). A water outlet pipe (8) is connected to the front side of the gas boiler body (1). A valve (9) is connected to the surface of the water outlet pipe (8).

2. The waste heat utilization device for flue gas from a gas-fired boiler according to claim 1, characterized in that: The limiting component (6) includes a mounting plate (61), which is fixedly installed on the inner side of the mounting plate (61) and both sides of the water storage tank (4). Mounting rods (62) are fixedly installed on the top and bottom of the back of the gas boiler body (1). The back of the mounting rods (62) extends through to the back of the mounting plate (61) and is slidably installed with the mounting plate (61). Two sets of rectangular grooves (63) are opened on the back of each set of mounting plates (61). A rectangular block (64) is rotatably installed on the back of the mounting rods (62). The front side of the rectangular block (64) contacts the back of the mounting plate (61).

3. The waste heat utilization device for flue gas from a gas-fired boiler according to claim 2, characterized in that: A bolt (65) is provided on the back of the rectangular block (64). The front end of the bolt (65) penetrates into the interior of the mounting rod (62) and is threaded onto the mounting rod (62). The front side of the bolt (65) contacts the back of the rectangular block (64).

4. The waste heat utilization device for flue gas from a gas-fired boiler according to claim 2, characterized in that: The top and bottom of the mounting plate (61) are fixedly installed with reinforcing blocks (10), and the inner side of the reinforcing blocks (10) and both sides of the water storage tank (4) are fixedly installed.

5. The waste heat utilization device for flue gas from a gas-fired boiler according to claim 1, characterized in that: The connecting assembly (7) includes a sliding sleeve (71), which is threadedly installed with the connecting pipe (5). A sealing ring (72) is fixedly installed at the bottom of the sliding sleeve (71), and a sealing groove (73) is opened at the top of the connecting pipe (5). The bottom of the sealing ring (72) is in contact with the bottom of the inner wall of the sealing groove (73).

6. The waste heat utilization device for flue gas from a gas-fired boiler according to claim 5, characterized in that: A connecting rod (74) is fixedly installed on the surface of the sliding sleeve (71), and a rubber ball (75) is fixedly installed on the surface of the connecting rod (74).

7. The waste heat utilization device for flue gas from a gas-fired boiler according to claim 1, characterized in that: A reinforcing rod (11) is fixedly installed on the back of the gas boiler body (1), and the top of the reinforcing rod (11) and the bottom of the placement plate (3) are fixedly installed.

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