A low-grade waste heat recovery and utilization device

Abstract

The present invention relates to the technical field of waste heat utilization devices, and in particular to a low-grade waste heat recovery and utilization device, characterized in that a double-shaft motor is arranged outside the dust removal cylinder, the output shaft on the left side of the double-shaft motor drives a cleaning device that cooperates with a filter screen, the top of the dust removal cylinder is fixedly connected with an inlet end of an exhaust pipe, the outlet end of the exhaust pipe is fixedly connected with the inlet end of a waste heat utilization cylinder, a water supply box is arranged on one side of the waste heat utilization cylinder, the water supply box is fixedly connected with the inlet end of a front water supply pipe, a circular pipe is arranged in the waste heat utilization cylinder, the inlet end of the circular pipe passes through the waste heat utilization cylinder to the right and is fixedly connected with the outlet end of the front water supply pipe, the outlet of the circular pipe passes through the waste heat utilization cylinder to the left and is fixedly connected with the inlet end of a rear water supply pipe, the outlet end of the rear water supply pipe is fixedly connected with the water inlet end of a ash machine body, and the waste heat utilization cylinder is coaxially arranged with an efficiency-enhancing utilization device for improving the efficiency of waste heat utilization.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat utilization devices, in particular to a low-grade waste heat recovery and utilization device. Background Art

[0002] Coking enterprises are large energy consumers, and reducing energy consumption per ton of product plays an important role in the sustainable development of enterprises. Coking enterprises will generate a large amount of low-grade energy during the production process. Low-grade energy contains a large amount of heat that is not used and is directly released. If the energy consumption of coking enterprises can be reduced by applying low-grade waste heat, it will be of great help to the company in reducing energy consumption per unit of product, and it will also open up a new path for energy conservation and carbon reduction for coking enterprises.

[0003] However, in reality, current coking enterprises generally lack devices for utilizing low-grade energy in actual production. For example, a ash dissolving machine will generate a large amount of low-grade thermal energy during use. However, due to certain difficulties in its utilization, it is often discharged, resulting in a waste of the low-grade thermal energy. To address the above problems, the present application proposes a low-grade waste heat recovery and utilization device for efficiently utilizing the low-grade thermal energy generated by the ash dissolving machine. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a low-grade waste heat recovery and utilization device, and the technical solution to the problem is that it includes an ash machine body, the exhaust end of the ash machine body is fixedly connected to the air inlet end of the dust collector, and is characterized in that a filter screen is coaxially fixedly connected inside the dust collector, a double-axis motor is arranged outside the dust collector, and the output shaft on the left side of the double-axis motor drives a cleaning device that cooperates with the filter screen, the top of the dust collector is fixedly connected to the inlet end of the exhaust pipe, the outlet end of the exhaust pipe is fixedly connected to the inlet end of the waste heat utilization cylinder, and a water supply tank is arranged on one side of the waste heat utilization cylinder, and the water supply tank is fixedly connected to the front supply At the inlet end of the water pipe, a loop pipe is arranged in the waste heat utilization cylinder, the inlet end of the loop pipe penetrates the waste heat utilization cylinder to the right and is fixedly connected with the outlet end of the front water supply pipe, the outlet of the loop pipe penetrates the waste heat utilization cylinder to the left and is fixedly connected with the inlet end of the rear water supply pipe, the outlet end of the rear water supply pipe is fixedly connected with the water inlet end of the ash machine body, the waste heat utilization cylinder is coaxially arranged with an efficiency-enhancing utilization device for improving the efficiency of waste heat utilization, the efficiency-enhancing utilization device is driven by the output shaft on the right side of the dual-axis motor, the efficiency-enhancing utilization device is composed of a bottom compression device and a top sealing device, the top of the waste heat utilization cylinder is fixedly connected with a discharge pipe, and a pressure relief valve is installed on the discharge pipe.

[0005] Preferably, the bottom compression device includes a guide sleeve coaxially arranged with the bottom of the waste heat utilization cylinder, the guide sleeve is vertically slidably connected with a compression rod, the top of the compression rod is coaxially fixedly connected with a compression disk that slides against the inner wall of the waste heat utilization cylinder, the upper end of the compression disk is coaxially fixedly connected with a sealing plug that slides against the inner wall of the waste heat utilization cylinder, the bottom of the compression rod is fixedly connected with a driving ring, the output shaft on the right side of the dual-axis motor is fixedly connected with one end of the driving rod, the other end of the driving rod is fixedly connected with a plug connected to the driving ring, the inner wall of the guide sleeve is provided with a guide groove, and the outer wall of the compression rod is fixedly connected with a guide key that vertically slides with the guide groove.

[0006] Preferably, the top plugging device comprises a trumpet cover coaxially arranged with the waste heat utilization cylinder, a head for plugging the inlet end of the waste heat utilization cylinder is coaxially arranged integrally at the upper end of the trumpet cover, and elastic connectors fixedly connected to the upper inner wall of the waste heat utilization cylinder are arranged at the left and right ends of the trumpet cover respectively;

[0007] Each of the elastic connecting parts respectively includes a mounting rod fixedly connected to the horn cover, the mounting rod is fixedly connected to a sleeve rod, the sleeve rod is coaxially sleeved with a sleeve fixedly connected to the upper inner wall of the waste heat utilization cylinder, the upper inner bottom surface of the sleeve is coaxially fixedly connected to the upper end of the spring, the lower end of the spring is fixedly connected to the sleeve rod, the sleeve is provided with two vertical grooves symmetrically arranged about its axis, and the sleeve rod is fixedly connected to two sliders that correspond one-to-one to the vertical grooves and slide vertically.

[0008] Preferably, the cleaning device includes a support rod fixedly connected to the inner wall of the dust removal cylinder, the support rod is coaxially rotatably connected to a vertically arranged cleaning shaft, the upper end of the cleaning shaft is fixedly connected to a cleaning rod abutting the bottom of the filter screen, the lower end of the cleaning shaft is coaxially fixedly connected to a driven bevel gear, the output shaft on the left side of the dual-axis motor passes through the dust removal cylinder and is coaxially fixedly connected to an active bevel gear, and the active bevel gear and the driven bevel gear are meshed with each other.

[0009] The beneficial effects of the present invention are:

[0010] 1. When the present application is in use, the tail gas of the ash machine body rich in low-grade thermal energy enters the dust removal cylinder, and the smoke and dust in the tail gas are removed by the filter. In order to prevent the smoke and dust from clogging the filter, a cleaning device is also provided to continuously clean the filter. The tail gas from which the smoke and dust are removed in the dust removal cylinder enters the waste heat utilization cylinder through the exhaust pipe to utilize the low-grade thermal energy in the tail gas. Specifically, a meandering pipe is arranged in the waste heat utilization cylinder, and the tail gas entering the waste heat utilization cylinder is rich in high thermal energy, which can heat up the water in the meandering pipe. Furthermore, the meandering pipe has a meandering structure, which greatly increases its action time with the low-grade thermal energy, ensuring its heating effect.

[0011] 2. Furthermore, in order to ensure the heating effect, an efficiency-enhancing device consisting of a bottom compression device and a top sealing device is provided. Under the action of the bottom compression device and the top sealing device, the low-grade thermal energy of the waste heat utilization cylinder can be compressed, thereby further increasing the effect of the low-grade thermal energy, so that the water in the circular pipe has a more obvious heating effect. The heated water enters the ash disintegrating machine through the rear water supply pipe for utilization, thereby improving the reaction rate of the ash disintegrating machine. The present application has a simple structure, is easy to use, and has strong practicality, which greatly improves the utilization rate of the low-grade thermal energy generated by the ash disintegrating machine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a stereoscopic view from the first viewing angle of the present invention.

[0013] Figure 2 For the present invention Figure 1 Magnified view of area A.

[0014] Figure 3 It is a partial stereoscopic cross-sectional view from a second viewing angle of the present invention.

[0015] Figure 4 For the present invention Figure 3 Magnified view of area B.

[0016] Figure 5 This is a partial stereoscopic view from the third viewing angle of the present invention.

[0017] Figure 6 For the present invention Figure 3 Magnified view of area D in the middle.

[0018] Figure 7 For the present invention Figure 4 Magnified view of area E in the middle.

[0019] Figure 8 It is a partial stereoscopic cross-sectional view from a fourth viewing angle of the present invention.

[0020] Reference numerals

[0021] 1. Ash machine body, 2. Dust removal cylinder, 3. Filter, 4. Dual-shaft motor, 5. Output shaft on the left, 6. Cleaning device, 7. Exhaust pipe, 8. Waste heat utilization cylinder, 9. Water supply tank, 10. Front water supply pipe, 11. Ring pipe, 12. Rear water supply pipe, 13. Bottom compression device, 14. Top plugging device, 15. Discharge pipe, 16. Guide sleeve, 17. Compression rod, 18. Compression plate, 19. Sealing plug, 20. Drive Moving ring, 21. Driving rod, 22. Insert rod, 23. Guide groove, 24. Guide key, 25. Horn cover, 26. Head, 27. Elastic connector, 28. Mounting rod, 29. Sleeve rod, 30. Sleeve, 31. Spring, 32. Vertical groove, 33. Slider, 34. Support rod, 35. Cleaning shaft, 36. Cleaning rod, 37. Driven bevel gear, 38. Active bevel gear, 39. Pressure relief valve, 40. Output shaft on the right. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-8 The specific implementation modes of the present invention are further described in detail.

[0023] Embodiment 1, the technical solution is that when the present application is in use, the tail gas of the ash machine body 1 rich in low-grade thermal energy enters the dust removal cylinder 2, and the smoke in the tail gas is removed under the action of the filter 3. In order to prevent the smoke from clogging the filter 3, a cleaning device 6 is also provided to continuously clean the filter 3. The tail gas from which the smoke is removed in the dust removal cylinder 2 enters the waste heat utilization cylinder 8 through the exhaust pipe 7 to utilize the low-grade thermal energy in the tail gas. Specifically, a loop pipe 11 is arranged in the waste heat utilization cylinder 8. The tail gas entering the waste heat utilization cylinder 8 is rich in large thermal energy, and the water in the loop pipe 11 can be heated. Furthermore, the loop pipe 11 has a loop structure, which greatly increases its action time with the low-grade thermal energy and ensures its heating effect. Furthermore, in order to ensure the heating effect, an efficiency-enhancing device consisting of a bottom compression device 13 and a top sealing device 14 is provided. Under the action of the bottom compression device 13 and the top sealing device 14, the low-grade thermal energy of the waste heat utilization cylinder 8 can be compressed, thereby further increasing the effect of the low-grade thermal energy, so that the water in the loop pipe 11 has a more obvious heating effect. The heated water enters the ash disintegrating machine through the rear water supply pipe 12 for utilization, thereby improving the reaction rate of the ash disintegrating machine. The present application has a simple structure, is easy to use, and has strong practicality, and greatly improves the utilization rate of the low-grade thermal energy generated by the ash disintegrating machine body 1.

[0024] Embodiment 2, on the basis of embodiment 1, specifically, when the present application is in use, clean water is stored in the water supply tank 9, and the clean water passes through the front water supply pipe 10, the loop pipe 11 and the rear water supply pipe 12 in sequence and finally enters the ash dissolving machine body 1 and participates in the ash dissolving reaction. In order to increase the reaction rate of the clean water participating in the ash dissolving reaction, the clean water needs to be heated, and the low-grade heat energy generated by the ash dissolving machine body 1 can just heat it, specifically: the exhaust gas treated by the filter screen 3 in the dust removal cylinder 2 enters the waste heat utilization cylinder 8 through the exhaust pipe 7. When the exhaust gas enters the preheating utilization cylinder, the streamline structure on the upper side of the horn cover 25 facilitates the dispersion of the exhaust gas in the waste heat utilization cylinder 8. The waste heat utilization cylinder 8 is basically a closed structure, and then the low-grade heat energy can gather there and act on the clean water in the loop pipe 11 to heat it. The loop structure of the loop pipe 11 further increases the circulation time of the clean water in the waste heat utilization cylinder 8, thereby ensuring its heating effect.

[0025] Furthermore, in order to improve the heating efficiency of the clean water in the meander tube 11 in the waste heat utilization cylinder 8, an efficiency-enhancing device consisting of a bottom compression device 13 and a top plugging device 14 is provided. Since the compression rod 17 of the bottom compression device 13 is vertically slidably connected with the guide groove 23 on the guide sleeve 16 through the guide key 24, when the output shaft 40 on the right side of the dual-axis motor 4 drives the driving rod 21 to rotate synchronously, the driving rod 21 will drive the compression rod 17 to move vertically back and forth along the guide sleeve 16 through the interaction between the insertion rod 22 and the driven ring during the rotation process of the driving rod 21;

[0026] In the process of the compression rod 17 moving upward along the guide sleeve 16, the compression plate 18 and the sealing plug 19 will move upward along the inner wall of the waste heat utilization tube 8, so that the upper space in the waste heat utilization tube 8 will be reduced, and the gas will be pushed upward. The upward movement of the gas will act on the horn cover 25 (the horn cover 25 is horn-shaped to facilitate its interaction with the upward gas). Then, under the action of other factors, the trumpet cover 25 will move upward, thereby driving the head 26 to temporarily block the inlet of the waste heat utilization tube 8. Then, as the compression rod 17 continues to move upward, the space in the upper and middle parts of the waste heat utilization tube 8 is further compressed. Since the head 26 blocks the inlet end of the waste heat utilization tube 8 at this time, the external discharge is limited, and the exhaust gas in the preheating tube, that is, the low-grade thermal energy, is compressed, thereby greatly increasing its internal energy, thereby further improving the heating effect of the clean water in the loop pipe 11. In order to ensure the safe use of the device, when the compression rod 17 moves upward to compress the exhaust gas to the limited pressure of the pressure relief valve 39, the pressure relief valve 39 will automatically open, so that the excess exhaust gas is discharged through the discharge pipe 15.

[0027] During the downward movement of the compression rod 17 along the guide sleeve 16: the compression rod 17 moves upward to the limit position and then moves downward. As the compression rod 17 moves downward, the compression plate 18 and the sealing plug 19 move downward accordingly, and the upper space in the waste heat utilization cylinder 8 becomes larger, and the pressure inside it decreases. The horn cover 25 will also automatically move downward accordingly, and the head 26 will release the blockage of the inlet end of the waste heat utilization cylinder 8. As the compression rod 17 continues to move downward, the compression rod 17, the sealing plug 19 and the waste heat utilization cylinder 8 are similar to a needle tube structure, so that the exhaust gas is sucked from the exhaust pipe 7 into the waste heat utilization cylinder 8, so as to facilitate the waste heat utilization. When the compression rod 17 moves downward to the limit position, it will move upward again and repeat the above process.

[0028] Embodiment 3, on the basis of embodiment 2, the trumpet cover 25 is connected to the upper side wall of the waste heat utilization tube 8 through an elastic connector 27, so that the trumpet cover 25 can be automatically adjusted with the reciprocating movement of the compression rod 17, specifically: during the upward movement of the compression rod 17, the gas is pushed to act on the trumpet cover 25 so that the trumpet cover 25 moves upward, thereby causing the end cap 26 to temporarily block the inlet end of the waste heat utilization tube 8, wherein when the trumpet cover 25 moves upward, the sleeve rod 29 on the mounting rod 28 moves upward along the sleeve 30 and compresses the spring 31, and then when the compression rod 17 moves downward, the pressure in the waste heat utilization tube 8 decreases, and the spring 31 cooperates with the self-restoring effect of the spring 31, and then the spring 31 will automatically extend and drive the sleeve rod 29 to reset downward. The sleeve and the sleeve rod 29 are connected vertically by a vertical slot 32 and a slider 33.

[0029] Embodiment 4, on the basis of embodiment 3, when the cleaning device 6 of the present application is in use, the output shaft 5 on the left side of the dual-axis motor 4 can drive the active bevel gear 38 to rotate, and then with the cooperation of the driven bevel gear 37, the cleaning shaft 35 on the support rod 34 can rotate accordingly, and when the cleaning shaft 35 rotates, the cleaning rod 36 rotates synchronously therewith to clean the filter screen 3.

Claims

1. A low-grade waste heat recovery and utilization device, comprising an ash machine body (1), wherein the exhaust end of the ash machine body (1) is fixedly connected to the intake end of a dust removal cylinder (2), characterized in that: A filter screen (3) is coaxially fixedly connected inside the dust removal cylinder (2), a double-shaft motor (4) is arranged outside the dust removal cylinder (2), an output shaft (5) on the left side of the double-shaft motor (4) drives a cleaning device (6) that cooperates with the filter screen (3), the top of the dust removal cylinder (2) is fixedly connected to the inlet end of an exhaust pipe (7), the outlet end of the exhaust pipe (7) is fixedly connected to the inlet end of a waste heat utilization cylinder (8), a water supply box (9) is arranged on one side of the waste heat utilization cylinder (8), the water supply box (9) is fixedly connected to the inlet end of a front water supply pipe (10), a return pipe (11) is arranged in the waste heat utilization cylinder (8), the inlet end of the return pipe (11) passes through the waste heat utilization cylinder (8) to the right, and the return pipe (11) is connected to the inlet end of the waste heat utilization cylinder (8). ) and is fixedly connected to the outlet end of the front water supply pipe (10); the outlet of the circular pipe (11) passes through the waste heat utilization cylinder (8) to the left and is fixedly connected to the inlet end of the rear water supply pipe (12); the outlet end of the rear water supply pipe (12) is fixedly connected to the water inlet end of the ash machine body (1); the waste heat utilization cylinder (8) is coaxially arranged with an efficiency-enhancing device for improving the efficiency of waste heat utilization; the efficiency-enhancing device is driven by the output shaft (40) on the right side of the dual-axis motor (4); the efficiency-enhancing device is composed of a bottom compression device (13) and a top blocking device (14); the top of the waste heat utilization cylinder (8) is fixedly connected to a discharge pipe (15); a pressure relief valve (39) is installed on the discharge pipe (15).

2. According to claim 1, a low-grade waste heat recovery and utilization device is characterized in that: The bottom compression device (13) comprises a guide sleeve (16) coaxially arranged with the bottom of the waste heat utilization cylinder (8); the guide sleeve (16) is vertically slidably connected to a compression rod (17); the top of the compression rod (17) is coaxially fixedly connected to a compression disk (18) slidably abutting against the inner wall of the waste heat utilization cylinder; the upper end of the compression disk (18) is coaxially fixedly connected to a sealing plug (19) slidably abutting against the inner wall of the waste heat utilization cylinder (8); the bottom of the compression rod (17) is fixedly connected to a drive ring (20); the output shaft (40) on the right side of the dual-axis motor (4) is fixedly connected to one end of the drive rod (21); the other end of the drive rod (21) is fixedly connected to an insertion rod (22) plugged into the drive ring (20); the inner wall of the guide sleeve (16) is provided with a guide groove (23); the outer wall of the compression rod (17) is fixedly connected to a guide key (24) vertically slidably matched with the guide groove (23).

3. The low-grade waste heat recovery and utilization device according to claim 1, characterized in that: The top plugging device comprises a trumpet cover (25) coaxially arranged with the waste heat utilization cylinder (8); a sealing head (26) for plugging the inlet end of the waste heat utilization cylinder (8) is coaxially arranged integrally at the upper end of the trumpet cover (25); and elastic connecting pieces (27) fixedly connected to the upper inner wall of the waste heat utilization cylinder (8) are respectively arranged at the left and right ends of the trumpet cover (25); Each of the elastic connecting members (27) comprises a mounting rod (28) fixedly connected to the horn cover (25); the mounting rod (28) is fixedly connected to a sleeve rod (29); the sleeve rod (29) is coaxially sleeved with a sleeve (30) fixedly connected to the upper inner wall of the waste heat utilization cylinder (8); the upper inner bottom surface of the sleeve (30) is coaxially fixedly connected to the upper end of a spring (31); the lower end of the spring (31) is fixedly connected to the sleeve rod (29); the sleeve (30) is provided with two vertical grooves (32) symmetrically arranged about its axis; the sleeve rod (29) is fixedly connected to two sliders (33) corresponding to the vertical grooves (32) one by one and vertically slidingly matched.

4. The low-grade waste heat recovery and utilization device according to claim 1, characterized in that: The cleaning device (6) comprises a support rod (34) fixedly connected to the inner wall of the dust removal cylinder (2); the support rod (34) is coaxially rotatably connected to a vertically arranged cleaning shaft (35); the upper end of the cleaning shaft (35) is fixedly connected to a cleaning rod (36) abutting against the bottom of the filter screen (3); the lower end of the cleaning shaft (35) is coaxially fixedly connected to a driven bevel gear (37); the output shaft (5) on the left side of the dual-axis motor (4) passes through the dust removal cylinder (2) and is coaxially fixedly connected to a driving bevel gear (38); the driving bevel gear (38) and the driven bevel gear (37) are meshed with each other.

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