A boiler flue gas cascade waste heat recovery energy saver

Abstract

The utility model provides a boiler flue gas cascade waste heat recovery energy saver, which belongs to the field of waste heat recovery and utilization of chemical production flue gas, and comprises: a first shell, a plurality of first heat exchange tubes are installed on the first shell, an air inlet pipe is connected to the first shell, a second heat exchange assembly is installed on the first shell, the water inlet ends of the plurality of first heat exchange tubes are commonly connected to the water inlet pipe, and the water outlet ends of the plurality of first heat exchange tubes are commonly connected to the drain pipe; a filter assembly; the filter assembly comprises a plurality of connecting rods fixedly connected to the first shell. The water filter plate provided in the utility model will filter the liquid, remove solid impurities in the liquid, avoid the accumulation of impurities in the liquid in the first heat exchange tube, prevent the first heat exchange tube from being blocked, and make it more portable for users to install and disassemble the water filter plate, thereby improving the practicality of the device, and at the same time, the second shell and the second heat exchange tube are provided, further improving the utilization efficiency of the waste heat in the flue gas.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production flue gas waste heat recovery and utilization, in particular to a boiler flue gas cascade waste heat recovery energy saver. Background Art

[0002] In the production process of chemical products, waste heat recovery heat exchangers are widely used. By using waste heat recovery heat exchangers, enterprises can save a lot of energy, reduce production costs, and also reduce pollution to the environment.

[0003] The waste heat recovery economizer passes water into the heat exchange tubes and heats the water with the heat in the flue gas, thereby realizing the reuse of heat. At present, the water pipes are generally connected to the heat exchange tubes to directly transport water into the heat exchange tubes. However, the water generally contains some solid particle impurities, which will block the heat exchange tubes after flowing through the heat exchange tubes for heating, causing the staff to dredge the heat exchange tubes, which is not only time-consuming and labor-intensive, but also affects production efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a boiler flue gas cascade waste heat recovery economizer.

[0005] The embodiment of the utility model provides a boiler flue gas cascade waste heat recovery economizer, comprising:

[0006] A first shell, wherein a plurality of first heat exchange tubes are installed on the first shell, an air inlet pipe is connected to the first shell, a second heat exchange assembly is installed on the first shell, water inlet ends of the plurality of first heat exchange tubes are commonly connected to a water inlet pipe, and water outlet ends of the plurality of first heat exchange tubes are commonly connected to a drain pipe;

[0007] Filter assembly; the filter assembly includes a plurality of connecting rods fixedly connected to the first shell, a connecting plate fixedly connected to the plurality of connecting rods, a fixed block fixedly connected to the connecting plate, the fixed block is hollow, the water inlet pipe is connected to the fixed block, a water filter plate is slidably penetrated on the fixed block, a limiting assembly is installed on the fixed block, a plurality of screw blocks are threadedly penetrated on the water filter plate, the plurality of screw blocks are threadedly connected to the fixed block, and the fixed block is connected with a connecting pipe.

[0008] Furthermore, the limiting assembly includes a limiting cavity opened on the fixed block, a sliding plate is slidably connected in the limiting cavity, a telescopic spring is fixedly connected to the inner wall of the limiting cavity, one end of the telescopic spring is fixedly connected to the sliding plate, a clamping block is fixedly connected to the sliding plate, the clamping block is wedge-shaped, a clamping slot is fixedly connected to the water filter plate, the clamping block slides through the fixed block and is matched with the clamping slot, a pull rod is fixedly connected to the side wall of the sliding plate, and the pull rod slides through the fixed block.

[0009] Furthermore, the second heat exchange assembly includes a second shell installed on the first shell, a plurality of bolts are threadedly penetrated on the second shell, and the plurality of bolts are threadedly connected to the first shell, a plurality of second heat exchange tubes are installed on the second shell, the water inlet ends of the plurality of second heat exchange tubes are commonly connected to the input pipe, and the water outlet ends of the plurality of second heat exchange tubes are commonly connected to the output pipe.

[0010] Furthermore, a handle is fixedly connected to the water filter plate.

[0011] Furthermore, a pull ring is fixedly connected to the pull rod.

[0012] Furthermore, the connecting pipe, the drain pipe, the input pipe and the output pipe are all fixedly connected with fixed flanges.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. After installing the device at the designated position, firstly, liquid is introduced into the connecting pipe, which will be filtered through the water filter plate to remove solid impurities in the liquid, so as to avoid the accumulation of impurities in the liquid in the first heat exchange tube and prevent the first heat exchange tube from being blocked. Then, the liquid will flow into the first heat exchange tube, and the flue gas entering the first shell through the air intake pipe will exchange heat with the liquid in the first heat exchange tube, so as to ensure the full utilization of the heat in the flue gas. When the user needs to replace the water filter plate, the user unscrews the screw block, then pulls the pull ring to move the card block out of the card slot, and then pulls the handle to pull out the water filter plate. Then, the user inserts the cleaned water filter plate into the fixing block, and the card block will automatically fix the water filter plate first, so that the user can use the screw block to fix the water filter plate later, making it more portable for the user to install and remove the water filter plate, thereby improving the practicality of the device.

[0015] 2. By providing a second shell and a second heat exchange tube, the utilization efficiency of the waste heat in the flue gas is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural stereoscopic schematic diagram of a boiler flue gas cascade waste heat recovery economizer described in an embodiment of the utility model.

[0017] Figure 2 It is a three-dimensional side view of the structure of a boiler flue gas cascade waste heat recovery economizer described in an embodiment of the utility model.

[0018] Figure 3 It is a three-dimensional cross-sectional view of a boiler flue gas cascade waste heat recovery economizer described in an embodiment of the utility model.

[0019] Figure 4It is a three-dimensional cross-sectional view of a limiting cavity of a boiler flue gas step waste heat recovery economizer described in an embodiment of the utility model.

[0020] Figure 5 for Figure 4 A magnified view of the structure in the middle.

[0021] Figure 6 It is a three-dimensional cross-sectional view of the fixed block structure of a boiler flue gas cascade waste heat recovery economizer described in an embodiment of the utility model.

[0022] In the above drawings: 1 first shell, 2 first heat exchange tube, 3 air intake pipe, 4 connecting rod, 5 connecting plate, 6 fixing block, 7 water filter plate, 8 limiting cavity, 9 sliding plate, 10 telescopic spring, 11 clamping block, 12 second shell, 13 bolt, 14 second heat exchange tube, 15 handle, 16 pull ring, 17 fixing flange. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1-Figure 6 As shown, the embodiment of the utility model proposes a boiler flue gas cascade waste heat recovery economizer, comprising:

[0025] A first shell 1, a plurality of first heat exchange tubes 2 are installed on the first shell 1, an air inlet pipe 3 is connected to the first shell 1, a second heat exchange assembly is installed on the first shell 1, water inlet ends of the plurality of first heat exchange tubes 2 are commonly connected to a water inlet pipe, water outlet ends of the plurality of first heat exchange tubes 2 are commonly connected to a drain pipe, and a filter assembly; the filter assembly includes a plurality of connecting rods 4 fixedly connected to the first shell 1, a connecting plate 5 is commonly fixedly connected to the plurality of connecting rods 4, and a fixing block 6 is fixedly connected to the connecting plate 5;

[0026] The fixed block 6 is hollow, the water inlet pipe is connected to the fixed block 6, a water filter plate 7 is slidably penetrated on the fixed block 6, a limit assembly is installed on the fixed block 6, a plurality of screw blocks are threadedly penetrated on the water filter plate 7, and the plurality of screw blocks are threadedly connected to the fixed block 6, a connecting pipe is connected to the fixed block 6, and a handle 15 is fixedly connected to the water filter plate 7, so that the user can pull the water filter plate 7, thereby improving the portability of the device;

[0027] The limiting assembly includes a limiting cavity 8 opened on the fixed block 6, a sliding plate 9 is slidably connected in the limiting cavity 8, a telescopic spring 10 is fixedly connected to the inner wall of the limiting cavity 8, one end of the telescopic spring 10 is fixedly connected to the sliding plate 9, a clamping block 11 is fixedly connected to the sliding plate 9, the clamping block 11 is wedge-shaped, a clamping groove is fixedly connected to the water filter plate 7, the clamping block 11 slides through the fixed block 6 and is matched with the clamping groove, a pull rod is fixedly connected to the side wall of the sliding plate 9, the pull rod slides through the fixed block 6, and a pull ring 16 is fixedly connected to the pull rod, which is convenient for users to pull the pull rod, thereby improving the portability of the device;

[0028] The second heat exchange assembly includes a second shell 12 installed on the first shell 1, and a plurality of bolts 13 are threadedly penetrated on the second shell 12, and the plurality of bolts 13 are threadedly connected to the first shell 1, and a plurality of second heat exchange tubes 14 are installed on the second shell 12, and the water inlet ends of the plurality of second heat exchange tubes 14 are commonly connected to the input pipe, and the water outlet ends of the plurality of second heat exchange tubes 14 are commonly connected to the output pipe, and the connecting pipe, the drain pipe, the input pipe and the output pipe are fixedly connected with a fixing flange 17, so that the user can connect the connecting pipe, the drain pipe, the output pipe and the input pipe, thereby ensuring the airtightness of the connection and preventing liquid from flowing out.

[0029] The detailed working process of the utility model is as follows:

[0030] After the user installs the device at the designated position, first, liquid is introduced into the connecting pipe, and the liquid will flow into the fixed block 6. The water filter plate 7 located in the fixed block 6 will filter the liquid. The water filter plate 7 removes solid impurities in the liquid to prevent the impurities in the liquid from accumulating in the first heat exchange tube 2 and clogging the first heat exchange tube 2. The liquid in the fixed block 6 will flow into the first heat exchange tube 2. At this time, the flue gas is transported to the first shell 1 through the air intake pipe 3. The flue gas will exchange heat with the liquid in the first heat exchange tube 2 to ensure full utilization of the heat in the flue gas. When the device has been used for a period of time, the user needs to replace the water filter plate 7. The user first unscrews the screw block and then pulls the pull ring 16. The pull ring 16 drives the pull rod to move, and the sliding plate 9 connected to the pull rod will slide, causing the telescopic spring 10 located in the limit cavity 8 to release. When the water filter plate 7 is in the state of being contracted, the block 11 connected to the sliding plate 9 will temporarily contract into the limiting cavity 8, so that the block 11 is moved out of the slot, and then the handle 15 is pulled to pull out the water filter plate 7, and then the user inserts the cleaned water filter plate 7 into the fixing block 6, and the side wall of the water filter plate 7 will squeeze the block 11, and the block 11 will temporarily contract, and when the slot on the water filter plate 7 is facing the block 11, the telescopic spring 10 will automatically reset and automatically push the block 11 into the slot to limit the water filter plate 7, so that the user can use the screw block to fix the water filter plate 7 later, making it more portable for the user to install and disassemble the water filter plate 7, thereby improving the practicability of the device, and then the flue gas will flow into the second shell 12, and the second heat exchange pipe 14 in the second shell 12 will perform a second heat exchange with the flue gas, thereby further improving the utilization efficiency of the residual heat in the flue gas.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A boiler flue gas cascade waste heat recovery economizer, characterized in that: include: A first shell (1), wherein a plurality of first heat exchange tubes (2) are mounted on the first shell (1), an air inlet pipe (3) is connected to the first shell (1), a second heat exchange component is mounted on the first shell (1), water inlet ends of the plurality of first heat exchange tubes (2) are commonly connected to a water inlet pipe, and water outlet ends of the plurality of first heat exchange tubes (2) are commonly connected to a drain pipe; A filter assembly; the filter assembly comprises a plurality of connecting rods (4), a connecting plate (5) being fixedly connected to the plurality of connecting rods (4), a fixing block (6) being fixedly connected to the connecting plate (5), the water inlet pipe being connected to the fixing block (6), a water filter plate (7) slidingly passing through the fixing block (6), a limiting assembly being installed on the fixing block (6), a plurality of screw blocks being threadedly passing through the water filter plate (7), the plurality of screw blocks being threadedly connected to the fixing block (6), and a connecting pipe being connected to the fixing block (6).

2. A boiler flue gas cascade waste heat recovery economizer according to claim 1, characterized in that: in: The limiting assembly comprises a limiting cavity (8), a sliding plate (9) is slidably connected in the limiting cavity (8), a telescopic spring (10) is fixedly connected to the inner wall of the limiting cavity (8), one end of the telescopic spring (10) is fixedly connected to the sliding plate (9), a clamping block (11) is fixedly connected to the sliding plate (9), a clamping slot is fixedly connected to the water filter plate (7), the clamping block (11) slides through the fixed block (6) and is matched with the clamping slot, and a pull rod is fixedly connected to the side wall of the sliding plate (9), and the pull rod slides through the fixed block (6).

3. The boiler flue gas cascade waste heat recovery economizer according to claim 1, characterized in that: in: The second heat exchange assembly comprises a second shell (12), a plurality of bolts (13) threadedly penetrate the second shell (12), the plurality of bolts (13) are all threadedly connected to the first shell (1), a plurality of second heat exchange tubes (14) are mounted on the second shell (12), the water inlet ends of the plurality of second heat exchange tubes (14) are commonly connected to an input tube, and the water outlet ends of the plurality of second heat exchange tubes (14) are commonly connected to an output tube.

4. The boiler flue gas cascade waste heat recovery economizer according to claim 1, characterized in that: in: A handle (15) is fixedly connected to the water filter plate (7).

5. The boiler flue gas cascade waste heat recovery economizer according to claim 2, characterized in that: in: A pull ring (16) is fixedly connected to the pull rod.

6. The boiler flue gas cascade waste heat recovery economizer according to claim 3, characterized in that: in: The connecting pipe, the drain pipe, the input pipe and the output pipe are all fixedly connected with a fixing flange (17).

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