CN219776459U - Low-temperature waste heat recovery and heat storage device - Google Patents
Low-temperature waste heat recovery and heat storage device Download PDFInfo
- Publication number
- CN219776459U CN219776459U CN202321263976.9U CN202321263976U CN219776459U CN 219776459 U CN219776459 U CN 219776459U CN 202321263976 U CN202321263976 U CN 202321263976U CN 219776459 U CN219776459 U CN 219776459U
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- 238000011084 recovery Methods 0.000 title claims abstract description 24
- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- 238000005338 heat storage Methods 0.000 title claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 103
- 238000001914 filtration Methods 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000002912 waste gas Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a low-temperature waste heat recovery heat storage device, which relates to the field of waste heat recovery devices and comprises a heat exchanger, a pipeline, heat conduction liquid and a filtering mechanism, wherein one side of the pipeline is fixedly penetrated through one side of the heat exchanger, the heat conduction liquid is arranged between the heat exchanger and the pipeline, the bottom of the filtering mechanism is fixedly connected with the top end of the heat exchanger, one end of the pipeline penetrates through the bottom of the filtering mechanism, the driving assembly is used for driving a transmission connecting column to move backwards, the driving assembly is used for driving a transmission crank to lift forwards, so that the filtering assembly can be pulled out, when the filtering assembly is not pulled out through the cooperation of the driving assembly, the transmission connecting column at the top end of the transmission connecting column is driven to move forwards, and the front supporting assembly can limit the transmission connecting column to finish limiting the filtering assembly.
Description
Technical Field
The utility model relates to the field of waste heat recovery devices, in particular to a low-temperature waste heat recovery and storage device.
Background
Calcination is to alleviate the inherent tension of the molecular structure of the material, thereby enabling it to accommodate the forces that are continually increasing during the shaping process, and to be stronger at the end, and more ductile in the metal, so that it can be adapted to such treatments as hammering, twisting and bending. Because these operations all can increase metal firmness, so in order to reach good effect, just must repeat calcination sometimes, and produce a large amount of waste gases in the calcination process, these waste gases carry a large amount of harmful substance, according to national law regulation enterprise before discharging these waste gases, need filter it, in order to reduce the harmful substance in the waste gas, contain certain heat in these waste gases simultaneously, have certain recovery value, the enterprise is through heat exchanger with the heat recovery in the waste gas again, can discharge after the filtering mechanism in the heat exchanger filters again in the waste gas.
The filtering mechanism of the existing heat exchanger is generally composed of a square frame and a filtering plate, gas after heat recovery is filtered through the filtering plate, the filtering plate is generally fixed inside the square frame by screws, the structure is firm in connection, the filtering plate inside the square frame is required to be replaced at regular time to ensure the filtering efficiency, the screws are inconvenient to detach, the maintenance time of enterprises to the heat exchanger is prolonged to a certain extent, and the maintenance efficiency of staff is reduced.
Accordingly, there is a need to provide a new low-temperature waste heat recovery heat storage device that solves the above-mentioned technical problems.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a low-temperature waste heat recovery and heat storage device.
The utility model provides a low-temperature waste heat recovery heat storage device which comprises a heat exchanger, a pipeline, heat conduction liquid and a filtering mechanism, wherein one side of the pipeline fixedly penetrates through one side of the heat exchanger, the heat conduction liquid is arranged between the heat exchanger and the pipeline, the bottom of the filtering mechanism is fixedly connected with the top end of the heat exchanger, and one end of the pipeline penetrating through the heat exchanger is fixedly penetrated through the bottom of the filtering mechanism;
the filter mechanism comprises a square transmission column, a transmission crank, a transmission connecting column, a transmission connecting block, a driven component, a supporting component, a driving component and a filter component, wherein the transmission crank is arranged between the supporting components, one side of the transmission connecting column fixedly penetrates through one side of the transmission crank, two ends of the transmission connecting column movably penetrate through two sides of the inside of the supporting component respectively, the transmission crank is close to one side of the transmission connecting column and fixedly connected with the bottom of the square transmission column, one side of the bottom of the transmission connecting block is fixedly connected with one side of the top of the square transmission column, two sides of the driven component movably penetrate through one side of the supporting component far away from the inside of the side of the transmission connecting column respectively, one side of the driving component is fixedly connected with one side of the top of the transmission connecting block, one side of the filter component movably penetrates through one side of the supporting component and is fixedly connected with the top of the heat exchanger, and the pipeline penetrates through one end of the heat exchanger and is fixedly penetrated through the bottom of the supporting component.
Preferably, the driven assembly comprises a driven square column, a driven crank, a driven connecting column and a driven connecting block, wherein the driven crank is arranged inside one side, away from the transmission crank, of the supporting assembly, one side of the driven connecting column is fixedly penetrated on one side of the driven crank, two ends of the driven connecting column are respectively movably penetrated inside one side, away from the driven crank, of the supporting assembly, the bottom of the driven square column is fixedly connected with one side, close to the driven connecting column, of the driven square column, and one side, close to the top, of the driven square column, of the driven connecting block is fixedly connected with one side, close to the driven connecting column.
Preferably, the support assembly comprises a square frame, a support plate, two transmission plates and two driven plates, wherein the bottoms of the transmission plates are fixedly connected with one side of the interior of the square frame respectively, a transmission crank is arranged between the two transmission plates, two ends of a transmission connecting column are movably inserted into one side opposite to the interior of the two transmission plates respectively, two bottoms of the driven plates are fixedly connected with one side of the interior of the square frame away from the two transmission plates respectively, a driven crank is arranged between the two driven plates, two ends of the driven connecting column are movably inserted into one side opposite to the interior of the two driven plates respectively, the support plate is arranged in the interior of the square frame, one side of the support plate is fixedly connected with one side of the two transmission plates and one side of the two driven plates respectively, the bottom of the support plate is fixedly connected with one side of the inner surface of the square frame, the bottom of the square frame is fixedly connected with the top of the heat exchanger, one end of a pipeline penetrates through the heat exchanger and is fixedly inserted into the bottom of the square frame, and one side of the filter assembly is movably inserted into one side of the square frame.
Preferably, the driving assembly comprises a button, a driving plate and two movable pieces, one side of the button movably penetrates through one side of the square frame, the driving plate is arranged on one side, close to the top, of the square frame, the button penetrates through one end of the square frame and the driving plate to be fixedly connected with one side, close to the square frame, of the driving plate, one side, away from the button, of the movable piece is fixedly connected with the driving plate, and two sides, away from two ends, of the movable pieces, of the driving plate are respectively fixedly connected with the driving plate.
Preferably, the movable piece comprises a movable column and a spring, wherein one side of the movable column is fixedly connected with one side of the driving plate, which is far away from the driving plate, the movable column is movably penetrated inside the spring, one side of the movable column is movably penetrated through the spring, which is far away from one side of the two driving plates, the movable column is penetrated through one end of the supporting plate and is fixedly connected with one side of the driving connecting block, one side of the spring is adjacent to one side of the movable column, which is fixedly connected with the driving plate, and one side of the spring, which is far away from the driving plate, is fixedly connected with one side of the two driving plates, which is far away from the supporting plate.
Preferably, the filter assembly comprises a filter plate, a square groove is formed in the outer surface of one side of the square frame close to the bottom, one side of the filter plate is movably inserted into the square groove of the square frame, and an air outlet groove for filtering exhaust gas is formed in the top end of the square frame.
Compared with the related art, the low-temperature waste heat recovery heat storage device provided by the utility model has the following beneficial effects:
the filter component is inserted inwards to push the transmission crank to lift forward, the transmission connecting block is enabled to move backwards through the transmission connecting column, the filter component can be installed, when the filter component is not pulled out through the cooperation of the driving component, the transmission crank can be enabled to move backwards, the transmission connecting column at the top end of the transmission connecting column is driven to move forwards, the front supporting component can limit the transmission connecting column, therefore, the filter component is limited, when the filter component is required to be pulled out, the transmission connecting column is driven to move backwards, the transmission crank is driven to lift forwards through the driving component, the filter plate can be pulled out, the disassembly process of the filter component is simplified through the structure, the maintenance time of enterprises to a heat exchanger is reduced to a certain extent, and the maintenance efficiency of workers is improved.
Drawings
Fig. 1 is a schematic cross-sectional view of a low-temperature waste heat recovery and storage device according to the present utility model;
fig. 2 is a schematic diagram of the overall structure of the low-temperature waste heat recovery and storage device provided by the utility model;
FIG. 3 is a schematic view of the filter structure shown in FIG. 1;
FIG. 4 is a schematic view of the partial structure shown in FIG. 3;
FIG. 5 is a schematic cross-sectional view of the structure shown in FIG. 3;
FIG. 6 is a schematic view of the connection assembly shown in FIG. 5;
fig. 7 is a schematic structural view of the driving assembly shown in fig. 5.
Reference numerals in the drawings: 1. driving the square column; 2. a drive crank; 3. a transmission connecting column; 4. a transmission connecting block; 5. a driven square column; 6. a driven crank; 7. a driven connection post; 8. a driven connecting block; 9. a square frame; 10. a support plate; 11. a drive plate; 12. a driven plate; 13. a button; 14. a driving plate; 15. a movable column; 16. a spring; 17. a filter plate; 18. a square groove; 19. an air outlet groove; 20. a movable groove.
Detailed Description
The utility model will be further described with reference to the drawings and embodiments.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7 in combination, fig. 1 is a schematic cross-sectional structure of a low-temperature waste heat recovery and heat storage device according to the present utility model; fig. 2 is a schematic diagram of the overall structure of the low-temperature waste heat recovery and storage device provided by the utility model; FIG. 3 is a schematic view of the filter structure shown in FIG. 1; FIG. 4 is a schematic view of the partial structure shown in FIG. 3; FIG. 5 is a schematic cross-sectional view of the structure shown in FIG. 3; FIG. 6 is a schematic view of the connection assembly shown in FIG. 5; fig. 7 is a schematic structural view of the driving assembly shown in fig. 5.
In the specific implementation process, as shown in fig. 1-7, the low-temperature waste heat recovery and heat accumulation device comprises a heat exchanger, a pipeline, heat conduction liquid and a filtering mechanism, wherein one side of the pipeline is fixedly penetrated through one side of the heat exchanger, the heat conduction liquid is arranged between the heat exchanger and the pipeline, the bottom of the filtering mechanism is fixedly connected with the top end of the heat exchanger, one end of the pipeline penetrating through the heat exchanger is fixedly penetrated through the bottom of the filtering mechanism, the filtering mechanism comprises a transmission square column 1, a transmission crank 2, a transmission connecting column 3, a transmission connecting block 4, a driven component, a supporting component, a driving component and a filtering component, the transmission crank 2 is arranged between the supporting components, one side of the transmission connecting column 3 is fixedly penetrated through one side of the transmission crank 2, two ends of the transmission connecting column 3 are respectively penetrated through two sides in the supporting component in a movable way, one side of the transmission crank 2 close to the transmission connecting column 3 is fixedly connected with the bottom of the transmission square column 1, the bottom of the transmission connecting block 4 is fixedly connected with one side of the top end of the transmission square column 1, two sides of the driven component are respectively and movably inserted into one side of the supporting component, which is far away from the transmission connecting column 3, one side of the driving component is fixedly connected with one side of the top end of the transmission connecting block 4, one side of the filtering component is movably inserted into one side of the supporting component, the bottom of the supporting component is fixedly connected with the top end of the heat exchanger, one end of the pipeline penetrates through the heat exchanger and is fixedly inserted into the bottom of the supporting component, the driven component comprises a driven square column 5, a driven crank 6, a driven connecting column 7 and a driven connecting block 8, the driven crank 6 is arranged in one side of the supporting component, which is far away from the transmission crank 2, one side of the driven connecting column 7 is fixedly inserted into one side of the driven crank 6, two ends of the driven connecting column 7 are respectively and movably inserted into one side of the supporting component, which is far away from the driven crank 6, the bottom of the driven square column 5 is fixedly connected with one side of the driven crank 6 adjacent to the driven connecting column 7, one side of the bottom of the driven connecting block 8 is fixedly connected with one side of the top end of the driven square column 5, the supporting component comprises a square frame 9, a supporting plate 10, two transmission plates 11 and two driven plates 12, the bottoms of the two transmission plates 11 are fixedly connected with one side of the inside of the square frame 9 respectively, the transmission crank 2 is arranged between the two transmission plates 11, the two ends of the transmission connecting column 3 are movably inserted into the opposite sides of the inside of the two transmission plates 11 respectively, the bottoms of the two driven plates 12 are fixedly connected with one side of the inside of the square frame 9 away from the two transmission plates 11 respectively, the driven crank 6 is arranged between the two driven plates 12, the two ends of the driven connecting column 7 are movably inserted into the opposite sides of the inside of the two driven plates 12 respectively, the supporting plate 10 is arranged inside the square frame 9, one side of the supporting plate 10 is fixedly connected with one side of the two transmission plates 11 and one side of the two driven plates 12 respectively, the bottom of the supporting plate 10 is fixedly connected with one side of the inner surface of the square frame 9, the bottom of the square frame 9 is fixedly connected with the top end of the heat exchanger, a pipeline penetrates through one end of the heat exchanger and fixedly penetrates through the bottom of the square frame 9, one side of the filtering component movably penetrates through one side of the square frame 9, the driving component comprises a button 13, a driving plate 14 and two movable pieces, one side of the button 13 movably penetrates through one side of the square frame 9, the driving plate 14 is arranged at one side of the square frame 9 near the top end, one side of the button 13 penetrates through one end of the square frame 9 and is fixedly connected with one side of the driving plate 14 near the square frame 9, one side of the movable piece is fixedly connected with one side of the driving plate 14 far from the button 13, one side of the two movable pieces is respectively fixedly connected with two ends of the driving plate 14 far from the movable pieces, the movable pieces comprise a movable column 15 and a spring 16, one side of the movable column 15 is fixedly connected with one side of the driving plate 14 far from the button 13, the side of the movable column 15 far away from the driving plate 14 is movably penetrated in the spring 16, the side of the movable column 15 penetrating through the spring 16 is movably penetrated in the side of the supporting plate 10 far away from the two transmission plates 11, one end of the movable column 15 penetrating through the supporting plate 10 is fixedly connected with one side of the transmission connecting block 4, one side of the spring 16 is fixedly connected with one side of the driving plate 14 near the movable column 15, one side of the spring 16 far away from the driving plate 14 is fixedly connected with one side of the supporting plate 10 far away from the two transmission plates 11, the filter assembly comprises a filter plate 17, a square groove 18 is formed on the outer surface of one side of the square frame 9 near the bottom, one side of the filter plate 17 is movably penetrated in the square groove 18 of the square frame 9, an air outlet groove 19 for discharging filtered waste gas is formed at the top end of the square frame 9, two drive plates 11 and two driven plates 12 open to one side bottom and have movable groove 20, get into filter 17 both sides of mechanism of filtering and respectively move about and alternate in the movable groove 20 of two drive plates 11 and two driven plates 12, another movable part, keep away from drive plate 14 one side and driven connecting block 8 one side fixed connection, through pressing button 13, drive movable column 15 through drive plate 14 and move forward, movable column 15 is through stretching out drive transmission connecting block 4 and drive transmission connecting block 4 backward movement, make drive transmission connecting block 4 drive transmission crank 2 through the square piece of transmission and lift up forward, make driven connecting block 8 drive driven crank 6 through the square piece of driven simultaneously and lift up forward, can accomplish the dismantlement of filter 17.
The working principle provided by the utility model is as follows: the filter plate 17 is inserted inwards into the movable groove 20 between the two transmission plates 11 and the two driven plates 12 to push the transmission crank 2 and the driven crank 6 to be lifted forwards, so that the transmission connecting column 3 moves the transmission square column 1 backwards through the transmission crank 2, and meanwhile, the driven connecting column 7 moves the driven square column 5 backwards through the driven crank 6. The installation of the filter plate 17 can be completed, when the filter plate 17 is not pulled out through the contact clamping state, the transmission crank 2 and the driven crank 6 can be enabled to move backwards, the transmission square column 1 at the top end of the transmission connecting column 3 is driven to move forwards, meanwhile, the driven square column 5 at the top end of the driven connecting column 7 is driven to move forwards, the front supporting plate 10 can limit the transmission connecting block 4 and the driven connecting block 8, the limit of the filter plate 17 is completed, when the filter plate 17 needs to be pulled out, the button 13 is pressed, the movable column 15 is driven to move forwards through the driving plate 14, the movable column 15 is enabled to drive the transmission crank 2 to lift forwards through the transmission square column 1 through extending the transmission connecting block 4 and the transmission connecting block 4, meanwhile, the driven connecting block 8 is enabled to drive the driven crank 6 to lift forwards through the driven square column 5, and the filter plate 17 can be pulled out.
The circuits and control involved in the present utility model are all of the prior art, and are not described in detail herein.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (6)
1. The low-temperature waste heat recovery and heat accumulation device is characterized by comprising a heat exchanger, a pipeline, heat conduction liquid and a filtering mechanism, wherein one side of the pipeline is fixedly penetrated through one side of the heat exchanger, the heat conduction liquid is arranged between the heat exchanger and the pipeline, the bottom of the filtering mechanism is fixedly connected with the top end of the heat exchanger, and one end of the pipeline penetrating through the heat exchanger is fixedly penetrated through the bottom of the filtering mechanism;
the filter mechanism comprises a transmission square column (1), a transmission crank (2), a transmission connecting column (3), a transmission connecting block (4), a driven component, a supporting component, a driving component and a filter component, wherein the transmission crank (2) is arranged between the supporting components, one side of the transmission connecting column (3) is fixedly penetrated through one side of the transmission crank (2), two ends of the transmission connecting column (3) are movably penetrated through two sides inside the supporting component respectively, one side of the transmission crank (2) is close to the transmission connecting column (3) and fixedly connected with the bottom of the transmission square column (1), one side of the bottom of the transmission connecting block (4) is fixedly connected with one side of the top of the transmission square column (1), two sides of the driven component are movably penetrated through one side of the supporting component, one side of the driving component is fixedly connected with one side of the top of the transmission connecting block (4), one side of the filter component is movably penetrated through one side of the supporting component, the bottom of the supporting component is fixedly connected with the top of the heat exchanger, and one end of the pipeline penetrates through the heat exchanger and is fixedly penetrated through the bottom of the supporting component.
2. The low-temperature waste heat recovery and heat storage device according to claim 1, wherein the driven assembly comprises a driven square column (5), a driven crank (6), a driven connecting column (7) and a driven connecting block (8), the driven crank (6) is arranged inside a side, away from the transmission crank (2), of the supporting assembly, one side of the driven connecting column (7) is fixedly penetrated on one side of the driven crank (6), two ends of the driven connecting column (7) are movably inserted inside a side, away from the driven crank (6), of the supporting assembly respectively, the bottom of the driven square column (5) is fixedly connected with one side, close to the driven connecting column (7), of the driven crank (6), and one side of the bottom of the driven connecting block (8) is fixedly connected with one side, away from the top end, of the driven square column (5).
3. The low-temperature waste heat recovery and heat storage device according to claim 2, wherein the supporting component comprises a square frame (9), a supporting plate (10), two driving plates (11) and two driven plates (12), the bottoms of the driving plates (11) are fixedly connected with one side of the interior of the square frame (9), the driving crank (2) is arranged between the two driving plates (11), two ends of the driving connecting column (3) are movably inserted into one side of the interior of the two driving plates (11) respectively, the bottoms of the driven plates (12) are fixedly connected with one side of the interior of the square frame (9) away from the two driving plates (11) respectively, the driven crank (6) is arranged between the two driven plates (12), two ends of the driven connecting column (7) are movably inserted into one side of the interior of the two driven plates (12) respectively, the supporting plate (10) is fixedly connected with one side of the two driving plates (11) and one side of the two driven plates (12) respectively, the bottoms of the supporting plate (10) are inserted into one side of the square frame (9) respectively, one side of the square frame (9) is fixedly connected with one side of the surface of the square frame (9) respectively, the bottom of the driven crank (6) is fixedly connected with one side of the bottom of the square frame (9) and one side of the heat exchanger (9) respectively, and the bottom of the square frame is fixedly connected with one side of the top of the square frame (9) respectively.
4. The low-temperature waste heat recovery and heat storage device according to claim 3, wherein the driving assembly comprises a button (13), a driving plate (14) and two movable pieces, one side of the button (13) movably penetrates through one side of the square frame (9), the driving plate (14) is arranged on one side, close to the top end, of the square frame (9), one end, close to the square frame (9), of the driving plate (14), of the button (13) is fixedly connected, one side, far away from the button (13), of the driving plate (14), of the movable piece is fixedly connected with the driving plate (14), and two sides, far away from two ends, of the movable pieces, of the movable piece are fixedly connected with the driving plate (14).
5. The low-temperature waste heat recovery and heat storage device according to claim 4, wherein the movable piece comprises a movable column (15) and a spring (16), one side of the movable column (15) is fixedly connected with one side of the driving plate (14) away from the button (13), one side of the movable column (15) away from the driving plate (14) movably penetrates through the spring (16), one side of the movable column (15) penetrates through the supporting plate (10) movably to one side of the supporting plate (10) away from the two transmission plates (11), one end of the movable column (15) penetrates through the supporting plate (10) to be fixedly connected with one side of the transmission connecting block (4), one side of the spring (16) is adjacent to one side of the movable column (15) to be fixedly connected with one side of the driving plate (14), and one side of the spring (16) away from the driving plate (14) and one side of the supporting plate (10) away from the two transmission plates (11).
6. The low-temperature waste heat recovery and heat storage device according to claim 5, wherein the filtering assembly comprises a filtering plate (17), a square groove (18) is formed in the outer surface of one side of the square frame (9) close to the bottom, one side of the filtering plate (17) is movably inserted into the square groove (18) of the square frame (9), and an air outlet groove (19) for discharging filtered waste gas is formed in the top end of the square frame (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321263976.9U CN219776459U (en) | 2023-05-23 | 2023-05-23 | Low-temperature waste heat recovery and heat storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321263976.9U CN219776459U (en) | 2023-05-23 | 2023-05-23 | Low-temperature waste heat recovery and heat storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219776459U true CN219776459U (en) | 2023-09-29 |
Family
ID=88136060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321263976.9U Active CN219776459U (en) | 2023-05-23 | 2023-05-23 | Low-temperature waste heat recovery and heat storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219776459U (en) |
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2023
- 2023-05-23 CN CN202321263976.9U patent/CN219776459U/en active Active
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Denomination of utility model: A low-temperature waste heat recovery and storage device Granted publication date: 20230929 Pledgee: Guanlan Sub Branch of Shenzhen Rural Commercial Bank Co.,Ltd. Pledgor: Shenzhen Hanhai Energy Saving Technology Co.,Ltd. Registration number: Y2024980002120 |