Waste heat recovery device based on phase change material and heat energy storage

Abstract

The waste heat recovery device based on the phase change material and heat energy storage comprises a waste heat recovery outer box, a protective cover plate is arranged at an opening in the top end of the waste heat recovery outer box, a heat source connecting main pipe is arranged on one side of the waste heat recovery outer box, and a particle filtering and deslagging assembly is connected to an outer connector of the heat source connecting main pipe; the particle filtering and deslagging assembly comprises a connecting vertical pipe which is communicated with the outer end part of the heat source connecting main pipe and is perpendicular to the heat source connecting main pipe, the connecting vertical pipe is a rectangular pipe, and a filtering and deslagging screen plate is arranged at the outer end part of the heat source connecting main pipe; according to the waste heat recovery device, through the arranged particle filtering and deslagging assembly, impurities contained in steam or hot gas can be filtered and removed during waste heat recovery, and the situation that the impurities contained in the steam or the hot gas enter a pipeline, blockage is caused, and the normal waste heat recovery condition is affected is avoided; in addition, particle impurities adhering to the filtering slag-preventing screen plate can be cleaned, and the filtering effect of the filtering slag-preventing screen plate on the particle impurities is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of phase change materials, and in particular to a waste heat recovery device based on phase change materials and thermal energy storage. Background Art

[0002] Phase change materials refer to materials that change their state with temperature and can provide latent heat. The process of changing physical properties is called phase change process. At this time, the phase change material will absorb or release a large amount of latent heat; using the phase change process of phase change materials to recover waste heat can better improve the utilization efficiency of waste heat.

[0003] When recovering waste heat, current waste heat recovery devices basically directly pump steam or hot air into a waste heat recovery box for recovery. However, the steam or hot air may contain impurities such as particles. If they enter the pipeline, they may cause blockage and affect the normal use of the waste heat recovery device. Summary of the invention

[0004] In order to solve the defects of the prior art, the present invention provides a waste heat recovery device based on phase change material and thermal energy storage.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention discloses a waste heat recovery device based on phase change material and thermal energy storage, comprising a waste heat recovery outer box, a protective cover plate is provided at the top opening of the waste heat recovery outer box, a heat source connecting main pipe is provided on one side of the waste heat recovery outer box, a particle filtering and slag removing component is connected to the outer interface of the heat source connecting main pipe; the particle filtering and slag removing component comprises a connecting vertical pipe connected to the outer end of the heat source connecting main pipe and perpendicular to the heat source connecting main pipe, the connecting vertical pipe is configured as a rectangular pipe, a filtering and slag preventing mesh plate is provided at the outer end of the heat source connecting main pipe, the filtering and slag preventing mesh plate is flush with the inner wall of the heat source connecting main pipe, a scraping and cleaning component is provided on the inner wall of the heat source connecting main pipe for scraping and cleaning particles adhered to the filtering and slag preventing mesh plate by moving from top to bottom, and an impurity collecting component is provided at the bottom end of the connecting vertical pipe for collecting scraped particle impurities.

[0007] As a preferred technical solution of the present invention, the scraping and cleaning assembly includes an electric push rod installed vertically on the inner wall of the vertical pipe, the output shaft of the electric push rod is connected to a movable strip, the bottom end of the movable strip is provided with a slag removal scraper, the inner wall of the vertical pipe is provided with guide rails located on both sides of the electric push rod, and both end ends of the movable strip are provided with guide slides matching the guide rails.

[0008] As a preferred technical solution of the present invention, the slag removal scraper is in contact with the inner wall of the connecting vertical pipe, and a reinforcing rib connected to the moving strip is provided on the slag removal scraper.

[0009] As a preferred technical solution of the present invention, the impurity collection assembly includes a connecting pipe joint arranged at the bottom end of the vertical connecting pipe, the bottom end of the connecting pipe joint is provided with an externally threaded pipe joint, the external thread of the externally threaded pipe joint is connected to an internally threaded connecting pipe joint, and the bottom end of the internally threaded connecting pipe joint is provided with an impurity collection bucket.

[0010] As a preferred technical solution of the present invention, the filtering and anti-slag mesh plate is connected to the outer end of the heat source connecting main pipe through a convenient disassembly and assembly component; the convenient disassembly and assembly component includes a plug-in notch arranged at the connection between the inner wall of the connecting vertical pipe and the heat source connecting main pipe, and a plug-in frame matching the plug-in notch is provided at the outer edge of the filtering and anti-slag mesh plate, a limiting edge is provided at the edge of the plug-in frame, and a limiting slot matching the limiting edge is provided on the inner wall of the plug-in notch.

[0011] As a preferred technical solution of the present invention, the inner wall of the connecting pipe joint is provided with an internal thread near one end of the connecting vertical pipe, and the internal thread of the connecting pipe joint is threadedly connected with a threaded pressing ring for pressing the plug-in frame into the plug-in notch.

[0012] As a preferred technical solution of the present invention, the outer wall of the waste heat recovery outer box is provided with a protective reinforcement component; the protective reinforcement component includes a protective bracket arranged on the outer wall of the waste heat recovery outer box, and the outer end of the protective bracket is provided with a positioning half ring, and the bottom end and the middle of the positioning half ring are both installed with vertically downward synchronous hydraulic cylinders, and the output shafts of multiple synchronous hydraulic cylinders are connected to the same supporting truncated table, and the outer side of the supporting truncated table is provided with a limiting retaining edge.

[0013] As a preferred technical solution of the present invention, an energy storage box is provided inside the waste heat recovery outer box, and a plurality of equidistantly distributed energy storage units are connected to the interior of the energy storage box via a positioning assembly. The interior of the energy storage unit is divided into a plurality of energy storage cavities via a plurality of vertical partition plates, and the interior of the energy storage cavity is filled with phase change material, and the phase change material in each energy storage cavity is different. An energy storage cover is provided on the top of the energy storage box; the positioning assembly includes a plurality of equidistantly distributed guide slots provided on the inner wall of the energy storage box, and a guide slider matching the guide slot is provided on the side of the energy storage unit.

[0014] As a preferred technical solution of the present invention, a reserved gap is left between the waste heat recovery outer box and the energy storage box body, a supporting half ring fixed between the waste heat recovery outer box and the energy storage box body is provided inside the reserved gap, a clamping ring is connected to the top of the supporting half ring via a rotating shaft, the supporting half ring and the clamping ring are fixedly connected via bolts, an inner tube is provided in the cavity formed by the multiple supporting half rings and the clamping ring, a multiple branch tubes corresponding to the energy storage cavities one by one are provided on the inner tube, and a quick connector is provided on the branch tube.

[0015] As a preferred technical solution of the present invention, a supporting base frame is provided at the bottom end of the waste heat recovery outer box, and a locking assembly for the protective cover is provided on the outer wall of the waste heat recovery outer box; the locking assembly includes a positioning step plate provided at the top of the waste heat recovery outer box, and a positioning side lining matching the positioning step plate is provided at the bottom end of the protective cover, and two T-shaped locking sleeves are provided on both sides of the waste heat recovery outer box, and U-shaped locking pressure plates pressed on the protective cover are inserted on the two opposite locking sleeves on both sides, and a locking plate matching the locking sleeve is provided at the bottom end of the locking pressure plate, and the locking sleeve and the locking plate are fixedly connected by a fixing pin.

[0016] The beneficial effects of the present invention are:

[0017] 1. This waste heat recovery device based on phase change material and thermal energy storage has a particle filtering and slag removal component. When recovering waste heat, the filtering and slag prevention mesh plate can filter and remove impurities contained in steam or hot air, thereby preventing impurities contained in steam or hot air from entering the pipeline to cause blockage and affect normal waste heat recovery. The scraping and cleaning component can clean the particulate impurities adhering to the filtering and slag prevention mesh plate, ensuring the filtering effect of the filtering and slag prevention mesh plate on particulate impurities, and the impurity collection component can collect scraped particles and other impurities.

[0018] 2. This waste heat recovery device based on phase change material and thermal energy storage, when scraping off particles and other impurities adhering to the filtering and slag-proof mesh plate, the output shaft of the electric push rod pushes the moving strip to move, and the moving strip pushes the slag removal scraper to move to scrape off particles and other impurities adhering to the filtering and slag-proof mesh plate, ensuring normal filtering use. At the same time, the guide slide on the moving strip moves under the action of the guide rail, thereby improving the stability of the slag removal scraper movement.

[0019] 3. This waste heat recovery device based on phase change material and thermal energy storage, when disassembling, cleaning or replacing the filter anti-slag mesh plate, rotate the threaded pressure ring and take it out from the inside of the connecting pipe joint, then the filter anti-slag mesh plate can be taken out for cleaning or replacement. When replacing, the limiting slot matches the limiting edge, which can be quickly positioned, and then the threaded pressure ring is used to tighten the filter anti-slag mesh plate, which is convenient for cleaning or replacement of the filter anti-slag mesh plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of a waste heat recovery device based on phase change material and thermal energy storage of the present invention;

[0022] Figure 2It is a schematic diagram of the structure of a particle filtering and slag removal component of a waste heat recovery device based on phase change materials and thermal energy storage according to the present invention;

[0023] Figure 3 It is a cross-sectional view of a particle filtering and slag removal component of a waste heat recovery device based on phase change material and thermal energy storage of the present invention;

[0024] Figure 4 The invention is a waste heat recovery device based on phase change material and thermal energy storage Figure 3 The enlarged cross-sectional view at B in the middle;

[0025] Figure 5 The invention is a waste heat recovery device based on phase change material and thermal energy storage Figure 3 Enlarged cross-sectional view at point C in the middle;

[0026] Figure 6 It is a top view of a waste heat recovery outer box of a waste heat recovery device based on phase change material and thermal energy storage of the present invention with the protective cover plate opened;

[0027] Figure 7 It is a schematic diagram of the connection structure of a support half ring and a clamping ring of a waste heat recovery device based on phase change material and thermal energy storage according to the present invention;

[0028] Figure 8 The invention is a waste heat recovery device based on phase change material and thermal energy storage Figure 1 The enlarged structural diagram at A in the middle;

[0029] Fig. 9 It is a cross-sectional view of the connection between a waste heat recovery outer box and a protective cover plate of a waste heat recovery device based on phase change material and thermal energy storage of the present invention.

[0030] In the figure: 1. Waste heat recovery outer box; 2. Protective cover; 3. Heat source connection main pipe; 4. Particle filtering and slag removal component; 5. Connecting vertical pipe; 6. Filter slag prevention screen; 7. Scraping and cleaning component; 701. Electric push rod; 702. Moving strip; 703. Slag removal scraper; 704. Guide rail; 705. Guide slide; 706. Reinforcement rib; 8. Impurity collection component; 801. Connecting pipe joint; 802. External thread pipe joint; 803. Internal thread connecting pipe joint; 804. Impurity collection bucket; 9. Easy disassembly and assembly component; 901. Plug-in notch; 902. Plug-in frame; 903. Limit edge; 904. Limit slot; 905. Threaded pressing ring; 906, protective reinforcement assembly; 9061, protective bracket; 9062, positioning half ring; 9063, synchronous hydraulic cylinder; 9064, supporting table; 9065, limiting rib; 10, energy storage box; 11, positioning assembly; 1101, guide slot; 1102, guide slider; 12, energy storage unit; 13, partition plate; 14, reserved gap; 15, supporting half ring; 16, clamping ring; 17, inner tube; 18, branch pipe; 19, supporting base; 20, locking assembly; 21, positioning step plate; 22, positioning edge lining; 23, locking sleeve; 24, locking pressure plate; 25, locking plate; 26, fixing pin. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] Example: Figure 1 , Figure 2 and Figure 3As shown, the present invention is a waste heat recovery device based on phase change material and thermal energy storage, including a waste heat recovery outer box 1, a protective cover plate 2 is provided at the top opening of the waste heat recovery outer box 1, a heat source connecting main pipe 3 is provided on one side of the waste heat recovery outer box 1, and a particle filtering and removing slag component 4 is connected to the outer interface of the heat source connecting main pipe 3; the particle filtering and removing slag component 4 includes a connecting vertical pipe 5 connected to the outer end of the heat source connecting main pipe 3 and perpendicular to the heat source connecting main pipe 3, the connecting vertical pipe 5 is set as a rectangular tube, and a filtering and slag preventing mesh plate 6 is provided at the outer end of the heat source connecting main pipe 3, and the filtering and slag preventing mesh plate 6 is flush with the inner wall of the heat source connecting main pipe 3, and the inner wall of the heat source connecting main pipe 3 is provided with a filter from top to bottom The scraping and cleaning component 7 is moved to scrape and clean the particles adhered to the filter anti-slag mesh plate 6, and the impurity collecting component 8 for collecting the scraped particulate impurities is provided at the bottom end of the connecting vertical pipe 5. Through the particle filtering and slag removing component 4, when recovering waste heat, the filter anti-slag mesh plate 6 can filter and remove impurities contained in the steam or hot air, thereby preventing impurities contained in the steam or hot air from entering the pipeline to cause blockage and affect the normal waste heat recovery. The scraping and cleaning component 7 can clean the particulate impurities adhered to the filter anti-slag mesh plate 6 to ensure the filtering effect of the filter anti-slag mesh plate 6 on particulate impurities, and the impurity collecting component 8 can collect the scraped particles and other impurities.

[0033] Specifically, Figure 4 As shown, the scraping and cleaning assembly 7 includes an electric push rod 701 installed vertically on the inner wall of the connecting vertical pipe 5, the output shaft of the electric push rod 701 is connected to a moving strip 702, the bottom end of the moving strip 702 is provided with a slag removal scraper 703, the inner wall of the connecting vertical pipe 5 is provided with guide rails 704 located on both sides of the electric push rod 701, and both ends of the moving strip 702 are provided with guide slides 705 matching the guide rails 704, the slag removal scraper 703 is in contact with the inner wall of the connecting vertical pipe 5, and the slag removal scraper 703 is A reinforcing rib 706 connected to the movable strip 702 is provided. When scraping off particles and other impurities adhering to the filter slag prevention mesh plate 6, the output shaft of the electric push rod 701 pushes the movable strip 702 to move, and the movable strip 702 pushes the slag removal scraper 703 to move to scrape off particles and other impurities adhering to the filter slag prevention mesh plate 6, thereby ensuring normal filtering use. At the same time, the guide slide 705 on the movable strip 702 moves under the action of the guide rail 704, thereby improving the stability of the movement of the slag removal scraper 703.

[0034] Specifically, Figure 2 , Figure 3 and Figure 5As shown, the impurity collecting component 8 includes a connecting pipe joint 801 arranged at the bottom end of the connecting vertical pipe 5, the bottom end of the connecting pipe joint 801 is provided with an external threaded pipe joint 802, the external thread of the external threaded pipe joint 802 is connected with an internal threaded connecting pipe joint 803, and the bottom end of the internal threaded connecting pipe joint 803 is provided with an impurity collecting barrel 804, which can collect scraped particles and other impurities, and the impurity collecting barrel 804 can be disassembled and assembled to clean the collected particles and other impurities.

[0035] Specifically, Figure 3 , Figure 4 and Figure 5 As shown, the filtering and slag-proofing mesh plate 6 is connected to the outer end of the heat source connecting main pipe 3 through the convenient disassembly and assembly component 9; the convenient disassembly and assembly component 9 includes a plug-in notch 901 provided at the connection between the inner wall of the connecting vertical pipe 5 and the heat source connecting main pipe 3, a plug-in frame 902 matching the plug-in notch 901 is provided at the outer peripheral edge of the filtering and slag-proofing mesh plate 6, a limiting edge 903 is provided at the edge of the plug-in frame 902, a limiting slot 904 matching the limiting edge 903 is provided on the inner wall of the plug-in notch 901, and an inner thread is provided on the inner wall of the connecting pipe joint 801 near the end of the connecting vertical pipe 5 The internal thread of the connecting pipe joint 801 is threadedly connected with a threaded pressing ring 905 that presses the plug-in frame 902 into the plug-in notch 901. When the filter anti-slag mesh plate 6 is disassembled for cleaning or replacement, the threaded pressing ring 905 is rotated and the threaded pressing ring 905 is taken out from the inside of the connecting pipe joint 801, and the filter anti-slag mesh plate 6 can be taken out for cleaning or replacement. When replacing, the limiting slot 904 matches the limiting edge 903, which can be quickly positioned, and then the threaded pressing ring 905 is used to tighten the filter anti-slag mesh plate 6, which is convenient for cleaning or replacement of the filter anti-slag mesh plate 6.

[0036] Among them, the outer wall of the waste heat recovery outer box 1 is provided with a protective reinforcement component 906; the protective reinforcement component 906 includes a protective bracket 9061 arranged on the outer wall of the waste heat recovery outer box 1, and the outer end of the protective bracket 9061 is provided with a positioning half ring 9062, and the bottom end and the middle of the positioning half ring 9062 are both installed with vertically downward synchronous hydraulic cylinders 9063, and the output shafts of multiple synchronous hydraulic cylinders 9063 are connected to the same supporting table 9064, and the outer side of the supporting table 9064 is provided with a limiting retaining edge 9065. The setting of the positioning half ring 9062 can quickly position the impurity collection barrel 804, and the output shaft of the synchronous hydraulic cylinder 9063 drives the supporting table 9064 to move upward to support the impurity collection barrel 804, thereby improving stability.

[0037] Specifically, Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, an energy storage box 10 is provided inside the waste heat recovery outer box 1, and a plurality of equidistantly distributed energy storage units 12 are connected to the inside of the energy storage box 10 via a positioning component 11. The inside of the energy storage unit 12 is divided into a plurality of energy storage cavities via a plurality of vertical partition plates 13. The inside of the energy storage cavity is filled with phase change material, and the phase change material inside each energy storage cavity is different. An energy storage cover plate 1001 is provided on the top of the energy storage box 10; the positioning component 11 includes a plurality of equidistantly distributed guide slots 1101 arranged on the inner wall of the energy storage box 10, and a guide slider 1102 matching the guide slot 1101 is provided on the side of the energy storage unit 12, which can be used for heat recovery, and the wire slot 1101 and the guide slider 1102 are used in combination to quickly position the energy storage unit 12.

[0038] Among them, a reserved gap 14 is left between the waste heat recovery outer box 1 and the energy storage box body 10, and a supporting half ring 15 fixed between the waste heat recovery outer box 1 and the energy storage box body 10 is provided inside the reserved gap 14. The top of the supporting half ring 15 is connected with a clamping ring 16 via a rotating shaft, and the supporting half ring 15 and the clamping ring 16 are fixedly connected by bolts. An inner tube 17 is provided in the cavity formed by multiple supporting half rings 15 and the clamping ring 16, and multiple branch pipes 18 corresponding to the energy storage cavity are provided on the inner tube 17. The branch pipes 18 are provided with quick connectors, which can support and fix the branch pipes 18, thereby improving the stability of the branch pipes 18.

[0039] The bottom end of the waste heat recovery outer box 1 is provided with a supporting base frame 19, and the outer wall of the waste heat recovery outer box 1 is provided with a locking assembly 20 for the protective cover plate 2; the locking assembly 20 includes a positioning step plate 21 arranged at the top of the waste heat recovery outer box 1, and the bottom end of the protective cover plate 2 is provided with a positioning side lining 22 matching the positioning step plate 21, and two T-shaped locking sleeves 23 are provided on both sides of the waste heat recovery outer box 1, and the two opposite locking sleeves 23 on both sides are plugged into the locking sleeves 23. There is a U-shaped locking plate 24 pressed on the protective cover 2, and a locking plate 25 matching the locking sleeve 23 is provided at the bottom end of the locking plate 24. The locking sleeve 23 and the locking plate 25 are fixedly connected via a fixing pin 26. After the protective cover 2 is covered on the waste heat recovery outer box 1, the locking plate 24 is pressed onto the protective cover 2, and the locking plate 25 at the end of the locking plate 24 is inserted into the locking sleeve 23, and then fixed and limited by the fixing pin 26.

[0040] When working, this waste heat recovery device based on phase change material and thermal energy storage, through the particle filtering and slag removal component 4, when recovering waste heat, the filtering and slag prevention mesh plate 6 can filter and remove impurities contained in steam or hot air, avoiding impurities contained in steam or hot air from entering the pipeline to cause blockage and affect normal waste heat recovery, and the scraping and cleaning component 7 can clean the particulate impurities adhering to the filtering and slag prevention mesh plate 6 to ensure the filtering effect of the filtering and slag prevention mesh plate 6 on particulate impurities, and the impurity collection component 8 can collect the scraped particles and other impurities. When scraping the particles and other impurities adhering to the filtering and slag prevention mesh plate 6, the output shaft of the electric push rod 701 pushes the moving strip 702 to move, and the moving strip 702 pushes the slag removal scraper 703 to move to scrape the particles and other impurities adhering to the filtering and slag prevention mesh plate 6 to ensure normal filtering use. At the same time, the guide slide 705 on the moving strip 702 moves under the action of the guide slide rail 704, which improves the stability of the movement of the slag removal scraper 703.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waste heat recovery device based on phase change material and thermal energy storage, characterized in that: It comprises a waste heat recovery outer box (1), a protective cover plate (2) is provided at the top opening of the waste heat recovery outer box (1), a heat source connection main pipe (3) is provided on one side of the waste heat recovery outer box (1), and a particle filtering and slag removal component (4) is connected to the outer interface of the heat source connection main pipe (3); The particle filtering and slag removing component (4) comprises a connecting vertical pipe (5) connected to the outer end of the heat source connecting main pipe (3) and perpendicular to the heat source connecting main pipe (3), the connecting vertical pipe (5) is set as a rectangular pipe, the outer end of the heat source connecting main pipe (3) is provided with a filtering slag prevention mesh plate (6), the filtering slag prevention mesh plate (6) is flush with the inner wall of the heat source connecting main pipe (3), the inner wall of the heat source connecting main pipe (3) is provided with a scraping and cleaning component (7) for scraping and cleaning particles adhered to the filtering slag prevention mesh plate (6) from top to bottom, and the bottom end of the connecting vertical pipe (5) is provided with an impurity collecting component (8) for collecting the scraped particle impurities.

2. A waste heat recovery device based on phase change material and thermal energy storage according to claim 1, characterized in that: The scraping and cleaning assembly (7) comprises an electric push rod (701) vertically mounted on the inner wall of the connecting vertical tube (5); the output shaft of the electric push rod (701) is connected to a movable strip plate (702); a slag removal scraper (703) is provided at the bottom end of the movable strip plate (702); the inner wall of the connecting vertical tube (5) is provided with guide rails (704) located on both sides of the electric push rod (701); and guide slide seats (705) matching the guide rails (704) are provided at both ends of the movable strip plate (702).

3. A waste heat recovery device based on phase change material and thermal energy storage according to claim 2, characterized in that: The slag removal scraper (703) is in contact with the inner wall of the connecting vertical pipe (5), and a reinforcing rib plate (706) connected to the moving strip plate (702) is provided on the slag removal scraper (703).

4. The waste heat recovery device based on phase change material and thermal energy storage according to claim 1 is characterized in that: The impurity collection assembly (8) comprises a connecting pipe joint (801) arranged at the bottom end of the vertical connecting pipe (5); an externally threaded pipe joint (802) is provided at the bottom end of the connecting pipe joint (801); an internally threaded connecting pipe joint (803) is connected to the external thread of the externally threaded pipe joint (802); and an impurity collection bucket (804) is provided at the bottom end of the internally threaded connecting pipe joint (803).

5. The waste heat recovery device based on phase change material and thermal energy storage according to claim 1 is characterized in that: The filtering and slag-proof mesh plate (6) is connected to the outer end of the heat source connection main pipe (3) via a convenient disassembly assembly component (9); The detachable assembly (9) comprises a plug-in notch (901) provided at the connection between the inner wall of the connecting vertical pipe (5) and the heat source connecting main pipe (3); a plug-in frame (902) matching the plug-in notch (901) is provided at the outer edge of the filtering slag prevention screen plate (6); a limiting edge (903) is provided at the edge of the plug-in frame (902); and a limiting slot (904) matching the limiting edge (903) is provided on the inner wall of the plug-in notch (901).

6. A waste heat recovery device based on phase change material and thermal energy storage according to claim 5, characterized in that: An inner wall of the connecting pipe joint (801) is provided with an internal thread near one end of the connecting vertical pipe (5), and a threaded pressing ring (905) is threadedly connected to the internal thread of the connecting pipe joint (801) for pressing the plug-in frame (902) into the plug-in notch (901).

7. The waste heat recovery device based on phase change material and thermal energy storage according to claim 1 is characterized in that: The outer wall of the waste heat recovery outer box (1) is provided with a protective reinforcement component (906); The protective reinforcement component (906) comprises a protective bracket (9061) arranged on the outer wall of the waste heat recovery outer box (1); a positioning half ring (9062) is arranged at the outer end of the protective bracket (9061); vertically downward synchronous hydraulic cylinders (9063) are installed at both ends and the middle of the bottom end of the positioning half ring (9062); the output shafts of the plurality of synchronous hydraulic cylinders (9063) are connected to the same supporting truncated platform (9064); and a limiting retaining edge (9065) is arranged on the outer side of the supporting truncated platform (9064).

8. The waste heat recovery device based on phase change material and thermal energy storage according to claim 1 is characterized in that: The waste heat recovery outer box (1) is provided with an energy storage box (10) inside, the interior of the energy storage box (10) is connected to a plurality of equally spaced energy storage units (12) via a positioning assembly (11), the interior of the energy storage unit (12) is divided into a plurality of energy storage cavities via a plurality of vertical partition plates (13), the interior of the energy storage cavity is filled with a phase change material, and the phase change material in each energy storage cavity is different, and the top of the energy storage box (10) is provided with an energy storage cover plate (1001); The positioning assembly (11) comprises a plurality of equally spaced guide slots (1101) arranged on the inner wall of the energy storage box (10), and a guide slide block (1102) matching the guide slots (1101) is arranged on the side of the energy storage unit (12).

9. A waste heat recovery device based on phase change material and thermal energy storage according to claim 8, characterized in that: A reserved gap (14) is provided between the waste heat recovery outer box (1) and the energy storage box (10); a supporting half ring (15) fixed between the waste heat recovery outer box (1) and the energy storage box (10) is provided inside the reserved gap (14); a clamping ring (16) is connected to the top of the supporting half ring (15) via a rotating shaft; the supporting half ring (15) and the clamping ring (16) are fixedly connected via bolts; an inner tube (17) is provided in a cavity formed by a plurality of supporting half rings (15) and the clamping ring (16); a plurality of branch pipes (18) corresponding to the energy storage cavities are provided on the inner tube (17); and a quick connector is provided on the branch pipe (18).

10. The waste heat recovery device based on phase change material and thermal energy storage according to claim 1, characterized in that: A supporting base frame (19) is provided at the bottom end of the waste heat recovery outer box (1), and a locking assembly (20) for the protective cover plate (2) is provided on the outer wall of the waste heat recovery outer box (1); The locking assembly (20) comprises a positioning step plate (21) arranged at the top of the waste heat recovery outer box (1); a positioning edge lining (22) matching the positioning step plate (21) is arranged at the bottom end of the protective cover plate (2); two T-shaped locking sleeves (23) are arranged on both sides of the waste heat recovery outer box (1); a U-shaped locking pressure plate (24) pressed on the protective cover plate (2) is inserted on the two opposite locking sleeves (23); a locking plate (25) matching the locking sleeve (23) is arranged at the bottom end of the locking pressure plate (24); the locking sleeve (23) and the locking plate (25) are fixedly connected via a fixing pin (26).

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