Waste heat recoverer with internal ash removal structure

Abstract

The utility model discloses a waste heat recoverer with an internal deashing structure, which relates to the technical field of waste heat recoverers, and comprises a box body, a rectangular air inlet pipe, a rectangular exhaust pipe, a heat exchanger and a filter screen, the rectangular air inlet pipe is welded at one end of the box body, the rectangular exhaust pipe is welded at the other end of the box body, and the rectangular exhaust pipe is welded at the other end of the box body. The front portion of the box body is connected with a heat exchanger in a penetrating mode. According to the waste heat recoverer with the internal ash removal structure, when a magnetic attraction block moves, the magnetic attraction block can be separated from a connecting block, meanwhile, the magnetic attraction block can drive a baffle to move, when the baffle moves away from the bottom of a through groove, a motor can be started, and when threads at the end of a threaded rotary knob move into a threaded groove, the threaded rotary knob can conduct threaded fixing on a sliding rod; at the moment, the arc-shaped supporting base can support the water pipe connected with the end of the heat exchanger, so that the water pipe connected with the heat exchanger is not prone to shaking in the using process of the waste heat recoverer, and therefore it is guaranteed that a water source can be stably conveyed.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery devices, in particular to a waste heat recovery device with an internal ash cleaning structure. Background Technique

[0002] A thermal power plant refers to a thermal power plant that can utilize the extraction steam or exhaust steam of a steam turbine to supply heat to users while generating electricity. In a thermal power plant, waste heat recovery is an important energy-saving measure. Through a waste heat recovery device, the waste heat in flue gas can be recovered and converted into useful thermal energy or electrical energy. Existing waste heat recovery devices still have certain defects when in use.

[0003] In the prior art, a waste heat recovery device is an efficient waste heat recovery equipment that can recover and utilize the thermal energy in flue gas. The waste heat recovery device can connect the inlet and outlet water pipes to both ends of a heat exchanger, and transfer the waste heat in the flue gas to cold water through the heat exchanger, thereby heating the cold water. The heated water can be used as domestic water. When the flue gas enters a rectangular inlet pipe, dust particles in the flue gas can be filtered out through a filter screen, thereby preventing the surface of the heat exchanger from being contaminated. When the dust particles adhere to the filter screen, it is easy to block the filter screen after a long time, and personnel need to clean the filter screen regularly. Since the temperature inside the rectangular inlet pipe is relatively high, it is troublesome and not safe for personnel to clean the ash. Content of the Utility Model

[0004] The purpose of the utility model is to provide a waste heat recovery device with an internal ash cleaning structure to solve the problem that the filter screen inside the existing waste heat recovery device in the market is difficult to clean the ash as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A waste heat recovery device with an internal ash cleaning structure, comprising: a box body, a rectangular inlet pipe, a rectangular exhaust pipe, a heat exchanger and a filter screen. One end of the box body is welded with a rectangular inlet pipe, the other end of the box body is welded with a rectangular exhaust pipe, the front part of the box body is penetrated and connected with a heat exchanger, a filter screen is installed inside the rectangular inlet pipe, a U-shaped frame is welded on the top of the rectangular inlet pipe, a connection box is welded on the top of the rectangular inlet pipe, a motor is installed inside the connection box, a lead screw is connected between the output end of the motor and the U-shaped frame through a bearing, a moving plate is threadedly connected to the outside of the lead screw, a moving rod is welded to the bottom of the moving plate, a cleaning brush is connected to the end of the moving rod, a connection block is welded to the bottom of the rectangular inlet pipe, a through groove is jointly opened between the connection block and the rectangular inlet pipe, a collection box is inserted into the connection block, a baffle is slidably connected to the inside of the connection block close to the through groove, and a magnetic attraction block is connected to the end of the baffle.

[0006] Preferably, a magnetically attracting structure is formed between the magnetic attraction block and the connecting block, and a sliding structure is formed between the moving rod and the rectangular air inlet pipe.

[0007] Preferably, a sliding structure is formed between the moving rod and the connecting box.

[0008] Preferably, a support frame is welded to the front part of the box body, and a connecting column is welded to the surface of the support frame.

[0009] Preferably, an inclined block is welded to the outer side of the end of the connecting column, and a threaded knob is threadedly connected to the inside of the inclined block.

[0010] Preferably, a sliding rod is slidably connected to the inside of the connecting column. A threaded groove is formed on one side of the sliding rod close to the threaded knob, and an arc-shaped support seat is welded to the top of the sliding rod.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the waste heat recovery device with an internal dust cleaning structure, when the magnetic attraction block moves, it can be separated from the connecting block, and at the same time, the magnetic attraction block can drive the baffle to move. When the baffle moves away from the bottom of the through groove, the motor can be started. When the threaded end of the threaded knob moves into the threaded groove, the threaded knob can threadedly fix the sliding rod. At this time, the arc-shaped support seat can support the water pipe connected to the end of the heat exchanger, so that the water pipe connected to the heat exchanger is not prone to shaking during the use of the waste heat recovery device, thereby ensuring the stable delivery of water.

[0012] 1. The waste heat recovery device can transfer heat energy to the medium to be heated. When the flue gas enters the rectangular air inlet pipe, the filter screen can filter the dust particles in the flue gas. After a long time, the filter screen is prone to blockage, and it is rather troublesome for personnel to clean the filter screen. When the magnetic attraction block moves, it can be separated from the connecting block, and at the same time, the magnetic attraction block can drive the baffle to move. When the baffle moves away from the bottom of the through groove, the motor can be started. When the motor rotates forward, it can drive the lead screw to rotate. When the lead screw rotates, it can drive the moving plate to perform threaded sliding in the direction of the motor. When the cleaning brush moves, it can clean the dust particles on the surface of the filter screen. When the cleaning brush descends to the designated position, the motor can be reversed, so that the cleaning brush can move upward for cleaning. The dust particles on the surface of the filter screen can be reciprocally cleaned by the cleaning brush. The cleaned dust particles can fall into the collection box through the through groove. When the surface of the filter screen is cleaned, the baffle can block the through groove. When the dust particles in the collection box are sufficient, the dust particles in the collection box can be taken out for cleaning. The dust particles on the surface of the filter screen can be simply and conveniently cleaned by the cleaning brush.

[0013] 2. The waste heat recovery device can introduce cold water into the box body through the pipes on the heat exchanger, so as to heat the cold water. Since the water pipes and the water connected to the heat exchanger are relatively heavy as a whole, the connected water pipes are prone to shaking. When the connected water pipes are butted against the ports at both ends of the heat exchanger, the arc-shaped support seat can be pulled upward. When the inner surface of the arc-shaped support seat moves to the bottom surface of the connected water pipe, the threaded knob can be rotated forward, so that the end of the threaded knob can perform threaded sliding in the direction of the sliding rod through the inclined block. When the end of the threaded knob is threadedly moved into the threaded groove, the threaded knob can threadedly fix the sliding rod. At this time, the arc-shaped support seat can support the water pipe connected to the end of the heat exchanger, so that the water pipe connected to the heat exchanger is not prone to shaking during the use of the waste heat recovery device, thus ensuring the stable delivery of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view structural schematic diagram of the present utility model;

[0015] Figure 2 is the front view sectional structural schematic diagram of the rectangular air inlet pipe of the present utility model;

[0016] Figure 3 For the present utility model Figure 1 is the enlarged sectional structural schematic diagram of A in the figure.

[0017] In the figure: 1, box body; 2, rectangular air inlet pipe; 3, rectangular exhaust pipe; 4, heat exchanger; 5, filter screen; 6, U-shaped frame; 7, connection box; 8, motor; 9, lead screw; 10, moving plate; 11, moving rod; 12, cleaning brush; 13, connection block; 14, through groove; 15, collection box; 16, baffle; 17, magnetic block; 18, support frame; 19, connection column; 20, inclined block; 21, threaded knob; 22, sliding rod; 23, threaded groove; 24, arc-shaped support seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1 and Figure 2It can be seen that the present utility model provides a technical solution: a waste heat recovery device with an internal dust cleaning structure, including: a box body 1, a rectangular intake pipe 2, a rectangular exhaust pipe 3, a heat exchanger 4, and a filter screen 5. One end of the box body 1 is welded with the rectangular intake pipe 2, the other end of the box body 1 is welded with the rectangular exhaust pipe 3, the front part of the box body 1 is penetrated and connected with the heat exchanger 4, the filter screen 5 is installed inside the rectangular intake pipe 2, a U-shaped frame 6 is welded on the top of the rectangular intake pipe 2, a connection box 7 is welded on the top of the rectangular intake pipe 2, a motor 8 is installed inside the connection box 7, a lead screw 9 is connected between the output end of the motor 8 and the U-shaped frame 6 through a bearing, a moving plate 10 is threadedly connected to the outside of the lead screw 9, a moving rod 11 is welded to the bottom of the moving plate 10, a cleaning brush 12 is connected to the end of the moving rod 11, a connecting block 13 is welded to the bottom of the rectangular intake pipe 2, a through groove 14 is jointly opened between the connecting block 13 and the rectangular intake pipe 2, a collection box 15 is inserted into the inside of the connecting block 13, a baffle 16 is slidably connected to the inside of the connecting block 13 close to the through groove 14, an end of the baffle 16 is connected with a magnetic attraction block 17, and a magnetic attraction structure is formed between the magnetic attraction block 17 and the connecting block 13. The moving rod 11 forms a sliding structure with the rectangular intake pipe 2, and the moving rod 11 forms a sliding structure with the connection box 7.

[0020] During specific implementation, the waste heat recovery device can transfer heat energy to the medium that needs to be heated. When the flue gas enters the inside of the rectangular intake pipe 2, the filter screen 5 can filter the dust particles in the flue gas. After a long time, the filter screen 5 is prone to blockage, and it is rather troublesome for personnel to clean the filter screen 5. First, the magnetic attraction block 17 can be pulled in a direction away from the connecting block 13. When the magnetic attraction block 17 moves, it can be separated from the connecting block 13, and at the same time, the magnetic attraction block 17 can drive the baffle 16 to move. When the baffle 16 moves away from the bottom of the through groove 14, the motor 8 can be started. When the motor 8 rotates forward, it can drive the lead screw 9 to rotate. When the lead screw 9 rotates, it can drive the moving plate 10 to perform threaded sliding in the direction of the motor 8. When the moving plate 10 performs threaded sliding, it can drive the moving rod 11 to move. When the moving rod 11 moves, it can drive the cleaning brush 12 to move. When the cleaning brush 12 moves, it can clean the dust particles on the surface of the filter screen 5. When the cleaning brush 12 descends to the specified position, the motor 8 can be reversed so that the cleaning brush 12 can move upward for cleaning. The cleaning brush 12 can reciprocally clean the dust particles on the surface of the filter screen 5. The cleaned dust particles can fall into the collection box 15 through the through groove 14. When the surface of the filter screen 5 is cleaned, the baffle 16 can block the through groove 14.

[0021] Refer to Figure 1 and Figure 2 It can be seen that when the dust particles inside the collection box 15 are sufficient, the dust particles inside the collection box 15 can be taken out for cleaning. The cleaning brush 12 can simply and conveniently clean the dust particles on the surface of the filter screen 5.

[0022] Refer to Figure 1 and Figure 3 As can be seen, a support frame 18 is welded to the front part of the box body 1. A connecting column 19 is welded to the surface of the support frame 18. An inclined block 20 is welded to the outer side of the end of the connecting column 19. A threaded knob 21 is threadedly connected to the inside of the inclined block 20. A sliding rod 22 is slidably connected to the inside of the connecting column 19. A threaded groove 23 is provided on one side of the sliding rod 22 close to the threaded knob 21. An arc-shaped support seat 24 is welded to the top of the sliding rod 22. The arc-shaped support seat 24 is made of stainless steel.

[0023] During specific implementation, the waste heat recovery device can introduce cold water into the box body 1 through the pipeline on the heat exchanger 4, so as to heat the cold water. Since the water pipes and the water connected to the heat exchanger 4 are relatively heavy, the connected water pipes are prone to shaking. When the connected water pipes are butted against the ports at both ends of the heat exchanger 4, the arc-shaped support seat 24 can be pulled upward. When the arc-shaped support seat 24 moves, it can drive the sliding rod 22 to move. When the inner surface of the arc-shaped support seat 24 moves to the bottom surface of the connected water pipe, the threaded knob 21 can be rotated forward, so that the end of the threaded knob 21 can perform threaded sliding toward the sliding rod 22 through the inclined block 20.

[0024] Refer to Figure 1 and Figure 3 As can be seen, when the end of the threaded knob 21 is threadedly moved into the threaded groove 23, the threaded knob 21 can threadedly fix the sliding rod 22. At this time, the arc-shaped support seat 24 can support the water pipe connected to the end of the heat exchanger 4, so that during the use of the waste heat recovery device, the water pipe connected to the heat exchanger 4 is not prone to shaking, thereby ensuring stable water source delivery.

[0025] In summary, when using the waste heat recovery device with an internal dust cleaning structure, the magnetic attraction block 17 can be first pulled away from the connection block 13. When the magnetic attraction block 17 moves, it can be separated from the connection block 13. At the same time, the magnetic attraction block 17 can drive the baffle 16 to move. When the dust particles in the collection box 15 are sufficient, the dust particles in the collection box 15 can be taken out for cleaning. The dust particles on the surface of the filter screen 5 can be simply and conveniently cleaned through the cleaning brush 12. When the end of the threaded knob 21 is threadedly moved into the threaded groove 23, the threaded knob 21 can threadedly fix the sliding rod 22. At this time, the arc-shaped support seat 24 can support the water pipe connected to the end of the heat exchanger 4, so that during the use of the waste heat recovery device, the water pipe connected to the heat exchanger 4 is not prone to shaking, thereby ensuring stable water source delivery. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0026] 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A waste heat recovery device with an internal dust cleaning structure, comprising: A box body (1), a rectangular intake pipe (2), a rectangular exhaust pipe (3), a heat exchanger (4) and a filter screen (5), characterized in that: One end of the box body (1) is welded with a rectangular intake pipe (2), the other end of the box body (1) is welded with a rectangular exhaust pipe (3), the front part of the box body (1) is connected through and penetrated with a heat exchanger (4), and a filter screen (5) is installed inside the rectangular intake pipe (2); A U-shaped frame (6) is welded on the top of the rectangular intake pipe (2), a connection box (7) is welded on the top of the rectangular intake pipe (2), a motor (8) is installed inside the connection box (7), a lead screw (9) is connected between the output end of the motor (8) and the U-shaped frame (6) through a bearing, a moving plate (10) is threadedly connected to the outside of the lead screw (9), a moving rod (11) is welded to the bottom of the moving plate (10), a cleaning brush (12) is connected to the end of the moving rod (11), a connection block (13) is welded to the bottom of the rectangular intake pipe (2), a through groove (14) is jointly opened between the connection block (13) and the rectangular intake pipe (2), a collection box (15) is inserted into the inside of the connection block (13), a baffle (16) is slidably connected to the inside of the connection block (13) close to the through groove (14), and a magnetic attraction block (17) is connected to the end of the baffle (16).

2. The waste heat recovery device with an internal dust cleaning structure according to claim 1, characterized in that: The magnetic attraction block (17) and the connection block (13) form a magnetically attractive structure, and the moving rod (11) and the rectangular intake pipe (2) form a sliding structure.

3. The waste heat recovery device with an internal dust cleaning structure according to claim 2, wherein: The moving rod (11) and the connection box (7) form a sliding structure.

4. The waste heat recovery device with an internal dust cleaning structure according to claim 1, wherein: A support frame (18) is welded to the front part of the box body (1), and a connection column (19) is welded to the surface of the support frame (18).

5. The waste heat recovery device with an internal dust cleaning structure according to claim 4, wherein: An inclined block (20) is welded to the outer side of the end of the connection column (19), and a threaded knob (21) is threadedly connected to the inside of the inclined block (20).

6. The waste heat recovery device with an internal dust cleaning structure according to claim 5, wherein: A sliding rod (22) is slidably connected to the inside of the connection column (19), a threaded groove (23) is opened on one side of the sliding rod (22) close to the threaded knob (21), and an arc-shaped support seat (24) is welded to the top of the sliding rod (22).

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