Waste heat recovery device of boiler

Abstract

The utility model belongs to the technical field of energy recovery, and discloses a boiler waste heat recovery device which comprises a device body, the left side and the right side of the device body are fixedly communicated with an air inlet pipe and an exhaust pipe respectively, a filter screen plate is fixedly installed in the air inlet pipe, and the inner wall of the air inlet pipe is movably installed on a vibration ring block on the right side of the filter screen plate. Through the arrangement of the vibration ring block, the piston rod and the pneumatic pipe, the pneumatic cylinder is started to drive the connecting arc plate, the connecting sliding block and the vibration ring block to impact the filter screen plate so as to shake off impurities and dust, and meanwhile, the piston rod can be pulled leftwards; gas at the left end of an inner cavity of a piston groove is pushed and guided into an inner cavity of a pneumatic pipe through a connecting pipe, so that a pneumatic rod and a lifting baffle are driven to integrally move downwards, sealing of the top of a blow-off pipe is relieved, and dust and impurities are smoothly discharged; and in the moving process, the sealing baffle is synchronously driven to leftwards make contact with the positioning ring block so as to block impurities and dust.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy recovery, in particular to a waste heat recovery device of a boiler. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. Existing boilers often use corresponding waste heat recovery devices during use. The high-temperature flue gas generated by the boiler is converted from cold water into hot water through a heat exchange device to achieve waste heat recovery. The high-temperature flue gas generated by the boiler contains impurities, so the flue gas passing through needs to be filtered. However, in the process of the flue gas passing through, a large amount of impurities will accumulate and remain on the filter, causing blockage, affecting the subsequent gas passing efficiency, thereby reducing the efficiency of waste heat recovery, so it needs to be improved. Utility Model Content

[0003] In order to solve the problems raised in the above background technology, the utility model provides a waste heat recovery device for a boiler.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste heat recovery device for a boiler, comprising a device body, wherein the left and right sides of the device body are respectively fixedly connected with an intake pipe and an exhaust pipe, a filter screen is fixedly installed inside the intake pipe, the inner wall of the intake pipe is movably installed on a vibration ring block on the right side of the filter screen, the right end of the vibration ring block is fixedly installed on a connecting slider on the inner wall of the intake pipe, the inner wall of the intake pipe is provided with a piston groove located on the right side of the connecting slider, the inner cavity of the piston groove is movably installed with a piston rod, and the left end of the piston rod is fixedly connected to the connecting slider.

[0005] Preferably, a connecting arc plate is fixedly installed in the middle part of the outer side of the connecting slider, the top of the connecting arc plate extends to above the air intake pipe, and a pneumatic cylinder located on the left side of the connecting arc plate is fixedly installed on the top of the air intake pipe, and the right end of the pneumatic cylinder is fixedly connected to the connecting arc plate.

[0006] Preferably, a heat exchange mechanism is provided in the middle of the bottom end of the inner cavity of the device body, a water injection pipe is fixedly installed in the middle of the top end of the device body, the inner cavity of the device body is provided with a water inlet valve groove located on the left side of the top of the heat exchange mechanism, and the bottom of the device body is fixedly connected to a water outlet valve pipe located on the right side of the bottom of the heat exchange mechanism.

[0007] Preferably, a positioning ring block located on the left side of the filter screen is fixedly installed on the inner wall of the air intake pipe, and the inner wall of the air intake pipe is movably installed on the sealing baffle on the left side of the connecting slider, and the right side of the front and rear ends of the sealing baffle are fixedly connected to the connecting slider.

[0008] Preferably, the bottom end of the air inlet pipe is fixedly connected to a sewage pipe located at the lower left side of the filter screen plate, and the inner wall of the air inlet pipe is movably mounted on a lifting baffle above the sewage pipe.

[0009] Preferably, the inner wall of the air inlet pipe is fixedly mounted on a pneumatic tube in the middle of the bottom end of the filter screen plate, a pneumatic rod is movably mounted in the inner cavity of the pneumatic tube, and the top of the pneumatic rod is fixedly connected to the lifting baffle.

[0010] Preferably, the tops of the front and rear ends of the pneumatic tube are connected with connecting tubes, and the other end of the connecting tube is fixedly connected with the left side of the outer end of the piston groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model provides a vibration ring block, a piston rod and a pneumatic tube, and by starting the pneumatic cylinder, it can drive the connecting arc plate, the connecting slider and the vibration ring block to impact the filter screen plate to vibrate and shake off the impurities and dust. At the same time, the piston rod can be pulled to the left, so that the gas at the left end of the inner cavity of the piston groove is pushed through the connecting tube and introduced into the inner cavity of the pneumatic tube, thereby driving the pneumatic rod and the lifting baffle plate downward as a whole, releasing the seal on the top of the sewage pipe, so that dust and impurities are discharged smoothly, and in the process of moving, the sealing baffle plate will be synchronously driven to the left to contact the positioning ring block to block the impurities and dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0016] Figure 4 It is a schematic cross-sectional structure diagram of the connecting slider of the utility model;

[0017] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at B in the middle;

[0018] Figure 6 It is a cross-sectional structural schematic diagram of the filter screen plate of the utility model;

[0019] Figure 7 for Figure 6 Schematic diagram of the local enlarged structure at point C in the middle.

[0020] In the figure: 1. device body; 2. air inlet pipe; 3. exhaust pipe; 4. heat exchange mechanism; 5. water injection pipe; 6. water inlet valve groove; 7. water outlet valve pipe; 8. filter screen; 9. vibration ring block; 10. connecting slider; 11. sealing baffle; 12. positioning ring block; 13. pneumatic cylinder; 14. connecting arc plate; 15. piston groove; 16. piston rod; 17. sewage pipe; 18. lifting baffle; 19. pneumatic tube; 20. pneumatic rod; 21. connecting pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figures 1 to 7 As shown, the utility model provides a waste heat recovery device for a boiler, including a device body 1, the left side and the right side of the device body 1 are respectively fixedly connected with an intake pipe 2 and an exhaust pipe 3, a filter screen plate 8 is fixedly installed inside the intake pipe 2, the inner wall of the intake pipe 2 is movably installed on the right side of the filter screen plate 8, the right end of the vibration ring block 9 is fixedly installed on the connecting slider 10 on the inner wall of the intake pipe 2, the inner wall of the intake pipe 2 is provided with a piston groove 15 located on the right side of the connecting slider 10, the inner cavity of the piston groove 15 is movably installed with a piston rod 16, and the left end of the piston rod 16 is fixedly connected to the connecting slider 10.

[0023] When the pneumatic cylinder 13 drives the connecting arc plate 14 and the connecting slider 10 to the left, it can simultaneously drive the vibration ring block 9 and the piston rod 16 to move, so that the vibration ring block 9 collides with the filter screen plate 8, and the movement of the piston groove 15 will cause the pneumatic rod 20 to drive the lifting baffle 18 downward, so that the filter screen plate 8 is collided and impurities are discharged through the drain pipe 17.

[0024] like Figure 6 As shown, a connecting arc plate 14 is fixedly installed in the middle of the outer side of the connecting slider 10, and the top of the connecting arc plate 14 extends to above the intake pipe 2. A pneumatic cylinder 13 located on the left side of the connecting arc plate 14 is fixedly installed on the top of the intake pipe 2, and the right end of the pneumatic cylinder 13 is fixedly connected to the connecting arc plate 14.

[0025] By adopting the above solution, the pneumatic cylinder 13 is provided. When the operator starts the pneumatic cylinder 13 to drive the connecting arc plate 14 to move, the connecting slider 10 and the vibration ring block 9 can be driven to move and impact synchronously.

[0026] like Figure 2As shown, a heat exchange mechanism 4 is provided in the middle of the bottom end of the inner cavity of the device body 1, a water injection pipe 5 is fixedly installed in the middle of the top end of the device body 1, the inner cavity of the device body 1 is provided with a water inlet valve groove 6 located on the left side of the top of the heat exchange mechanism 4, and the bottom of the device body 1 is fixedly connected to a water outlet valve pipe 7 located on the right side of the bottom of the heat exchange mechanism 4.

[0027] By adopting the above scheme, by providing a heat exchange mechanism 4, water can be first added to the inner cavity of the device body 1 through the water injection pipe 5, and then the heat exchange mechanism 4 is started. At the same time, water enters the heat exchange mechanism 4 through the water inlet valve groove 6 for heat exchange, and finally discharged through the water outlet valve pipe 7 for collection.

[0028] like Figure 4 As shown, the inner wall of the intake pipe 2 is fixedly installed with a positioning ring block 12 located on the left side of the filter screen plate 8, and the inner wall of the intake pipe 2 is movably installed on the sealing baffle 11 on the left side of the connecting slider 10, and the right side of the front and rear ends of the sealing baffle 11 are fixedly connected to the connecting slider 10.

[0029] By adopting the above scheme, a sealing baffle 11 is provided. When the connecting slider 10 moves to the left, the sealing baffle 11 can be driven to the left to contact the positioning ring block 12, thereby blocking the dust and impurities shaking on the left side of the filter plate 8 for subsequent discharge.

[0030] like Figure 2 and Figure 3 As shown, the bottom end of the air intake pipe 2 is fixedly connected to a sewage pipe 17 located at the lower left of the filter screen plate 8, and the inner wall of the air intake pipe 2 is movably mounted on a lifting baffle 18 above the sewage pipe 17.

[0031] By adopting the above solution, the lifting baffle 18 is provided. When the lifting baffle 18 moves downward as a whole, the top of the sewage pipe 17 can be unblocked to facilitate subsequent discharge.

[0032] like Figure 3 As shown, the inner wall of the air inlet pipe 2 is fixedly mounted on a pneumatic tube 19 in the middle of the bottom end of the filter screen plate 8 , and a pneumatic rod 20 is movably mounted in the inner cavity of the pneumatic tube 19 , and the top of the pneumatic rod 20 is fixedly connected to the lifting baffle 18 .

[0033] By adopting the above solution, the pneumatic tube 19 is provided. When the air pressure at the top of the inner cavity of the lifting baffle 18 increases, the pneumatic rod 20 and the lifting baffle 18 will be pushed down as a whole, so that the impurities can be discharged smoothly through the sewage pipe 17 later.

[0034] like Figure 5 and Figure 7 As shown, the tops of the front and rear ends of the pneumatic tube 19 are connected with a connecting tube 21 , and the other end of the connecting tube 21 is fixedly connected with the left side of the outer end of the piston groove 15 .

[0035] By adopting the above solution, by providing a connecting pipe 21, when the piston groove 15 moves to the left, the gas in the inner cavity of the piston rod 16 can be introduced into the inside of the pneumatic tube 19 through the connecting pipe 21, thereby pushing the pneumatic rod 20 and the lifting baffle 18 to move downward as a whole.

[0036] The working principle and use process of this utility model:

[0037] First, the operator can add cold water to the top of the inner cavity of the device body 1 through the water injection pipe 5, and then let the boiler flue gas enter through the air inlet pipe 2, and then open the water inlet valve slot 6 to allow water to enter the heat exchange mechanism 4. At the same time, the flue gas can pass through the water for heat exchange and temperature increase. Finally, the flue gas can be discharged through the exhaust pipe 3, and the hot water can be discharged through the water outlet valve pipe 7 for collection.

[0038] When the smoke continues to pass through the air intake pipe 2 and the filter screen plate 8, the pneumatic cylinder 13 can be started to drive the connecting arc plate 14 and the connecting slider 10 to move to the left, so that the vibration ring block 9 hits the filter screen plate 8 to the left to shake off the dust, and the piston rod 16 will move to the left to introduce the gas in the inner cavity of the piston groove 15 into the inner cavity of the pneumatic tube 19 through the connecting pipe 21, so that the pneumatic rod 20 and the lifting baffle 18 can be smoothly pushed downward to release the blocking seal on the top of the sewage pipe 17, and the impurities shaken off by the vibration will eventually be discharged through the sewage pipe 17.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for a boiler, characterized in that: The invention comprises a device body (1), wherein the left side and the right side of the device body (1) are respectively fixedly connected with an intake pipe (2) and an exhaust pipe (3), a filter screen plate (8) is fixedly installed inside the intake pipe (2), a vibration ring block (9) is movably installed on the inner wall of the intake pipe (2) on the right side of the filter screen plate (8), the right end of the vibration ring block (9) is fixedly installed on a connecting slider (10) on the inner wall of the intake pipe (2), the inner wall of the intake pipe (2) is provided with a piston groove (15) located on the right side of the connecting slider (10), a piston rod (16) is movably installed in the inner cavity of the piston groove (15), and the left end of the piston rod (16) is fixedly connected to the connecting slider (10).

2. The waste heat recovery device for a boiler according to claim 1, characterized in that: A connecting arc plate (14) is fixedly installed in the middle of the outer side of the connecting slider (10), the top of the connecting arc plate (14) extends to the top of the air intake pipe (2), and a pneumatic cylinder (13) located on the left side of the connecting arc plate (14) is fixedly installed on the top of the air intake pipe (2), and the right end of the pneumatic cylinder (13) is fixedly connected to the connecting arc plate (14).

3. The waste heat recovery device for a boiler according to claim 1, characterized in that: A heat exchange mechanism (4) is arranged in the middle of the bottom end of the inner cavity of the device body (1), a water injection pipe (5) is fixedly installed in the middle of the top end of the device body (1), the inner cavity of the device body (1) is provided with a water inlet valve groove (6) located on the left side of the top of the heat exchange mechanism (4), and the bottom of the device body (1) is fixedly connected to a water outlet valve pipe (7) located on the right side of the bottom of the heat exchange mechanism (4).

4. The waste heat recovery device for a boiler according to claim 1, characterized in that: The inner wall of the air intake pipe (2) is fixedly mounted with a positioning ring block (12) located on the left side of the filter screen plate (8); the inner wall of the air intake pipe (2) is movably mounted on a sealing baffle (11) on the left side of the connecting slider (10); and the right sides of the front and rear ends of the sealing baffle (11) are fixedly connected to the connecting slider (10).

5. The waste heat recovery device for a boiler according to claim 1, characterized in that: The bottom end of the air intake pipe (2) is fixedly connected to a sewage pipe (17) located at the lower left of the filter screen plate (8), and the inner wall of the air intake pipe (2) is movably mounted on a lifting baffle (18) above the sewage pipe (17).

6. The waste heat recovery device for a boiler according to claim 1, characterized in that: The inner wall of the air inlet pipe (2) is fixedly mounted on a pneumatic tube (19) in the middle of the bottom end of the filter screen plate (8); a pneumatic rod (20) is movably mounted in the inner cavity of the pneumatic tube (19); and the top of the pneumatic rod (20) is fixedly connected to the lifting baffle (18).

7. The waste heat recovery device for a boiler according to claim 6, characterized in that: The tops of the front and rear ends of the pneumatic tube (19) are connected to a connecting tube (21), and the other end of the connecting tube (21) is fixedly connected to the left side of the outer end of the piston groove (15).

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