Waste heat recycling device of vacuum sintering furnace

Abstract

The utility model relates to the technical field of vacuum sintering furnaces, and discloses a vacuum sintering furnace waste heat recycling device which comprises a vacuum sintering furnace, a first exhaust pipe, a filter box and a water tank, the top of the vacuum sintering furnace is fixedly communicated with the first exhaust pipe, and the other end of the first exhaust pipe is fixedly communicated with the top of the filter box. Through the arrangement of the filter screen, the cleaning machine and the copper pipe, discharged hot air is filtered through the filter screen, the filter screen is cleaned through the cleaning mechanism, blockage is prevented, the hot air heats water in the water tank through the copper pipe, the hot air enters the second exhaust pipe through the copper pipe, and then the hot air is discharged through the second exhaust pipe; the problems that a vacuum sintering furnace waste heat recycling device is generally provided with an exhaust pipe to directly exhaust redundant hot gas, the gas contains ash generated by calcination, if the ash is not treated, subsequent heat recycling is affected, and the utilization efficiency of the exhausted hot gas is not high are solved.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum sintering furnace technology, and in particular relates to a waste heat recovery and utilization device for vacuum sintering furnace. Background Technology

[0002] A vacuum sintering furnace is a special type of furnace primarily used for manufacturing high-performance ceramics, metals, and composite materials. Its basic working principle involves heating the material to be sintered in a vacuum environment, causing the particles within the material to undergo surface diffusion and self-diffusion. This leads to particle aggregation and the formation of new atomic and molecular layers between adjacent particles. Over time, these layers gradually thicken, eventually forming a sintered body.

[0003] The problem with the above technology is that in the existing technology, the waste heat recovery and utilization device of vacuum sintering furnace is generally equipped with an exhaust pipe to directly discharge excess heat gas. These gases contain some ash produced by calcination. This ash will be discharged along with the exhaust pipe. If the ash is not treated, it will affect the subsequent heat recovery and utilization, and the utilization efficiency of the discharged heat gas is not high. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a vacuum sintering furnace waste heat recovery and utilization device that can overcome the above problems or at least partially solve the above problems.

[0005] This utility model is implemented as follows: a waste heat recovery and utilization device for a vacuum sintering furnace includes a vacuum sintering furnace, a first exhaust pipe filter box, and a water tank. The top of the vacuum sintering furnace is fixedly connected to the first exhaust pipe, and the other end of the first exhaust pipe is fixedly connected to the top of the filter box. The bottom of the filter box is fixedly connected to a connecting pipe, and the bottom of the connecting pipe is fixedly connected to the water tank. An inlet and an outlet are fixedly connected to one side of the water tank. Supports are fixedly connected to the bottom of both the vacuum sintering furnace and the water tank. A cleaning mechanism is provided on one side of the filter box.

[0006] To clean the filter screen, prevent clogging, and improve filtration efficiency, the cleaning mechanism preferably includes a cross, a T-shaped groove, and a brush plate. One end of the cross is fixedly connected to one side of the filter box. The T-shaped groove is formed on the surface of the cross. One end of the brush plate extends to the inner wall of the T-shaped groove and is slidably connected to it. A handle is fixedly provided on one side of the brush plate. After the baffle is removed, the brush plate is moved to the right side of the T-shaped groove using the handle, so that the brush plate contacts the filter screen. At this time, the filter screen can be cleaned by moving the brush plate up and down using the handle.

[0007] To facilitate cleaning of the filter screen, preferably, the inner wall of the filter box is provided with a sliding groove, and a sliding rod is slidably connected to the inner wall of the sliding groove. The bottom of the sliding rod is fixedly connected to the filter screen, and the top of the filter screen is fixedly connected to a pull block. By pulling the pull block, the filter screen is moved towards the opening until the sliding rod moves to the end of the sliding groove. At this time, the pull block is used to straighten the filter screen. The first magnet embedded inside the filter screen contacts and attracts the second magnet embedded inside the first fixing block, so that the filter screen remains stable in the vertical state.

[0008] To stabilize the filter screen by limiting its position, preferably, two limiting strips are fixedly connected to the inner wall of the filter box, arranged vertically. One side of the top and bottom of the filter box is slidably connected to the opposite surfaces of the two limiting strips. A first magnet is embedded inside the filter screen, and a first fixing block is fixedly connected to the left wall of the inner cavity of the filter box. A second magnet is embedded in the inner wall of the first fixing block. The first magnet and the second magnet attract each other. The limiting strips stabilize the filter screen in a horizontal state, and the first and second magnets keep the filter screen stable in a vertical state.

[0009] In order to collect the swept-down ash, preferably, a baffle plate is fixedly connected to the left wall of the inner cavity of the filter box, and a ash guide pipe is fixedly connected to the bottom of the filter box. A cover is threadedly connected to one end of the ash guide pipe. The ash swept down by the brush will fall into the ash guide pipe or slide into the ash guide pipe through the baffle plate. The ash can be processed by opening the cover at one end of the ash guide pipe.

[0010] To facilitate cleaning of the filter screen, preferably, a second fixing block is fixedly connected to one side of the filter box, an opening is provided on one side of the filter box, a baffle is provided on one side of the filter box, a sealing strip is fixedly connected to one side of the baffle, the baffle is slidably connected to the inside of the opening through the sealing strip, a third fixing block is fixedly connected to one side of the baffle, the second fixing block and the third fixing block are fixedly connected by bolts, and a handle is fixedly provided on one side of the baffle. By loosening the bolts, the third fixing block is separated from the second fixing block. At this time, the baffle can be removed from the opening through the handle on one side of the baffle, and the filter screen can be cleaned. The sealing strip, the third fixing block and the second fixing block ensure the airtightness of the filter box.

[0011] To effectively utilize the residual heat from the exhaust, preferably, a copper pipe is installed inside the water tank, which is integrated with the water tank. One end of the copper pipe passes through the top of the water tank and extends into the inner cavity of a connecting pipe. A second exhaust pipe is fixedly connected to the bottom of the water tank, and the other end of the copper pipe passes through the bottom of the water tank and extends into the inner cavity of the second exhaust pipe. The hot air enters the copper pipe through the connecting pipe and heats the copper pipe, which in turn heats the water inside the water tank. This effectively utilizes the residual heat from the exhaust, and the hot air enters the second exhaust pipe through the copper pipe and is then discharged from the second exhaust pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes a filter screen, a cleaning machine, and copper pipes. The filter screen filters out the discharged hot air, and the cleaning machine cleans the filter screen to prevent clogging and improve filtration efficiency. The hot air passes through the copper pipes to heat the water inside the tank. The hot air then enters the second exhaust pipe through the copper pipes and is discharged from the second exhaust pipe. This solves the problem that vacuum sintering furnace waste heat recovery devices typically use exhaust pipes to directly discharge excess hot air, which contains ash produced during calcination. This ash is discharged with the exhaust pipe, and if the ash is not treated, it will affect subsequent heat recovery and utilization, and the utilization efficiency of the discharged hot air is low. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram provided in an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the filter box provided in an embodiment of the present invention;

[0016] Figure 3 This is provided by the embodiment of the present utility model. Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a schematic diagram of the cleaning mechanism provided in an embodiment of the present utility model;

[0018] Figure 5 This is a structural schematic diagram of the water tank and copper pipe provided in an embodiment of the present utility model.

[0019] In the diagram: 1. Vacuum sintering furnace; 2. First exhaust pipe; 3. Filter box; 4. Cleaning mechanism; 401. Cross; 402. T-shaped groove; 403. Brush plate; 5. Connecting pipe; 6. Water tank; 7. Second exhaust pipe; 8. Water inlet; 9. Water outlet; 10. Filter screen; 11. Sliding rod; 12. Sliding groove; 13. First magnet; 14. Limiting strip; 15. Pull block; 16. First fixing block; 17. Second magnet; 18. Ash guide pipe; 19. Ash baffle; 20. Second fixing block; 21. Baffle; 22. Sealing strip; 23. Third fixing block; 24. Copper pipe; 25. Through port. Detailed Implementation

[0020] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0021] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1 to 5 As shown in the figure, the present invention provides a waste heat recovery device for a vacuum sintering furnace, including a vacuum sintering furnace 1, a first exhaust pipe 2, a filter box 3, and a water tank 6. The top of the vacuum sintering furnace 1 is fixedly connected to the first exhaust pipe 2, and the other end of the first exhaust pipe 2 is fixedly connected to the top of the filter box 3. The bottom of the filter box 3 is fixedly connected to a connecting pipe 5, and the bottom of the connecting pipe 5 is fixedly connected to the water tank 6. An inlet 8 and an outlet 9 are fixedly connected to one side of the water tank 6. A bracket is fixedly connected to the bottom of both the vacuum sintering furnace 1 and the water tank 6. A cleaning mechanism 4 is provided on one side of the filter box 3.

[0023] To clean the filter screen 10, prevent clogging, and improve the filtration effect, the cleaning mechanism 4 includes a cross 401, a T-shaped groove 402, and a brush plate 403. One end of the cross 401 is fixedly connected to one side of the filter box 3. The T-shaped groove 402 is formed on the surface of the cross 401. One end of the brush plate 403 extends to the inner wall of the T-shaped groove 402 and is slidably connected to the T-shaped groove 402. A handle is fixedly provided on one side of the brush plate 403. After the baffle 21 is removed, the brush plate 403 is moved to the right side of the T-shaped groove 402 by the handle, so that the brush plate 403 contacts the filter screen 10. At this time, the filter screen 10 can be cleaned by moving the brush plate 403 up and down by the handle.

[0024] To facilitate cleaning of the filter screen 10, a sliding groove 12 is provided on the inner wall of the filter box 3. A sliding rod 11 is slidably connected to the inner wall of the sliding groove 12. The bottom of the sliding rod 11 is fixedly connected to the filter screen 10, and a pull block 15 is fixedly connected to the top of the filter screen 10. By pulling the pull block 15, the filter screen 10 is moved toward the opening 25 until the sliding rod 11 moves to the end of the sliding groove 12. At this time, the pull block 15 is used to verticalize the filter screen 10. The first magnet 13 embedded inside the filter screen 10 contacts and attracts the second magnet 17 embedded inside the first fixing block 16, so that the filter screen 10 remains stable in the vertical state.

[0025] To limit and stabilize the filter screen 10, a limiting strip 14 is fixedly connected to the inner wall of the filter box 3. Two limiting strips 14 are provided and are distributed vertically. One side of the top and bottom of the filter box 3 is slidably connected to the opposite side of the two limiting strips 14. A first magnet 13 is embedded inside the filter screen 10. A first fixing block 16 is fixedly connected to the left wall of the inner cavity of the filter box 3. A second magnet 17 is embedded in the inner wall of the first fixing block 16. The first magnet 13 and the second magnet 17 attract each other. The setting of the limiting strip 14 stabilizes the filter screen 10 in the horizontal state, and the first magnet 13 and the second magnet 17 keep the filter screen 10 stable in the vertical state.

[0026] In order to collect the swept-down ash, a baffle plate 19 is fixedly connected to the left wall of the inner cavity of the filter box 3. A guide pipe 18 is fixedly connected to the bottom of the filter box 3. A cover is threaded to one end of the guide pipe 18. The ash swept down by the brush plate 403 will fall into the guide pipe 18 or slide into the guide pipe 18 through the baffle plate 19. The ash can be processed by opening the cover at one end of the guide pipe 18.

[0027] To facilitate cleaning of the filter screen 10, a second fixing block 20 is fixedly connected to one side of the filter box 3, and an opening 25 is provided on one side of the filter box 3. A baffle 21 is provided on one side of the filter box 3, and a sealing strip 22 is fixedly connected to one side of the baffle 21. The baffle 21 is slidably connected to the inside of the opening 25 through the sealing strip 22. A third fixing block 23 is fixedly connected to one side of the baffle 21. The second fixing block 20 and the third fixing block 23 are fixedly connected by bolts. A handle is fixedly provided on one side of the baffle 21. By loosening the bolts, the third fixing block 23 can be separated from the second fixing block 20. At this time, the baffle 21 can be removed from the opening 25 by using the handle provided on one side of the baffle 21, so that the filter screen 10 can be cleaned. The sealing strip 22, the third fixing block 23 and the second fixing block 20 ensure the sealing of the filter box 3.

[0028] To effectively utilize the residual heat from the exhaust, a copper pipe 24 is installed inside the water tank 6. The copper pipe 24 is integrated with the water tank 6. One end of the copper pipe 24 passes through the top of the water tank 6 and extends into the inner cavity of the connecting pipe 5. A second exhaust pipe 7 is fixedly connected to the bottom of the water tank 6. The other end of the copper pipe 24 passes through the bottom of the water tank 6 and extends into the inner cavity of the second exhaust pipe 7. The hot air enters the copper pipe 24 through the connecting pipe 5 and heats the copper pipe 24. The copper pipe 24 heats the water inside the water tank 6, effectively utilizing the residual heat from the exhaust. The hot air enters the second exhaust pipe 7 through the copper pipe 24 and is then discharged from the second exhaust pipe 7.

[0029] The working principle of this utility model:

[0030] During use, the first exhaust pipe 2 discharges hot air and ash into the filter box 3. The ash is filtered by the filter screen 10. The hot air enters the copper pipe 24 through the connecting pipe 5 and heats the copper pipe 24, which in turn heats the water inside the water tank 6. This effectively utilizes the residual heat from the exhaust air. The hot air then enters the second exhaust pipe 7 through the copper pipe 24 and is discharged from the second exhaust pipe 7. After the vacuum sintering furnace 1 finishes operation, the third fixing block 23 is separated from the second fixing block 20 by loosening the bolts. At this time, the baffle 21 can be removed from the opening 25 by using the handle on one side of the baffle 21, allowing the filter screen 10 to be cleaned. The sealing strip 22, the third fixing block 23, and the second fixing block 20 ensure the airtightness of the filter box 3. The filter box 3 can be cleaned by pulling the pull block. 15 Move the filter screen 10 toward the opening 25 until the sliding rod 11 moves to the end of the sliding groove 12. At this time, the filter screen 10 is verticalized by the pull block 15. The first magnet 13 embedded in the filter screen 10 contacts and attracts the second magnet 17 embedded in the first fixing block 16, so that the filter screen 10 remains stable in the vertical state. After the baffle 21 is removed, the brush plate 403 is moved to the right side of the T-shaped groove 402 by the handle, so that the brush plate 403 contacts the filter screen 10. At this time, the filter screen 10 can be cleaned by moving the brush plate 403 up and down by the handle. The ash swept off by the brush plate 403 will fall into the ash guide pipe 18 or slide into the ash guide pipe 18 through the ash baffle 19. The ash can be processed by opening the cover at one end of the ash guide pipe 18.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can exercise their rights without departing from the scope of the present utility model.

Claims

1. A waste heat recovery and utilization device for a vacuum sintering furnace, comprising a vacuum sintering furnace (1), a first exhaust pipe (2), a filter box (3), and a water tank (6), wherein the top of the vacuum sintering furnace (1) is fixedly connected to the first exhaust pipe (2), the other end of the first exhaust pipe (2) is fixedly connected to the top of the filter box (3), the bottom of the filter box (3) is fixedly connected to a connecting pipe (5), and the bottom of the connecting pipe (5) is fixedly connected to the water tank (6), characterized in that: The water tank (6) is fixedly connected to an inlet (8) and an outlet (9) on one side. The vacuum sintering furnace (1) and the bottom of the water tank (6) are both fixedly connected to a bracket. The filter box (3) is provided with a cleaning mechanism (4) on one side.

2. The waste heat recovery and utilization device for a vacuum sintering furnace as described in claim 1, characterized in that: The cleaning mechanism (4) includes a cross (401), a T-shaped groove (402), and a brush plate (403). One end of the cross (401) is fixedly connected to one side of the filter box (3). The T-shaped groove (402) is opened on the surface of the cross (401). One end of the brush plate (403) extends to the inner wall of the T-shaped groove (402) and is slidably connected to the T-shaped groove (402). A handle is fixedly provided on one side of the brush plate (403).

3. The waste heat recovery and utilization device for a vacuum sintering furnace as described in claim 1, characterized in that: The filter box (3) has a sliding groove (12) on its inner wall. A sliding rod (11) is slidably connected to the inner wall of the sliding groove (12). A filter screen (10) is fixedly connected to the bottom of the sliding rod (11), and a pull block (15) is fixedly connected to the top of the filter screen (10).

4. The waste heat recovery and utilization device for a vacuum sintering furnace as described in claim 3, characterized in that: The inner wall of the filter box (3) is fixedly connected with a limiting strip (14). There are two limiting strips (14) and they are arranged vertically. The top and bottom sides of the filter box (3) are slidably connected to the opposite surfaces of the two limiting strips (14). The filter screen (10) is embedded with a first magnet (13). The left wall of the inner cavity of the filter box (3) is fixedly connected with a first fixing block (16). The inner wall of the first fixing block (16) is embedded with a second magnet (17). The first magnet (13) and the second magnet (17) attract each other.

5. The waste heat recovery and utilization device for a vacuum sintering furnace as described in claim 4, characterized in that: A dust baffle (19) is fixedly connected to the left wall of the inner cavity of the filter box (3), and a dust guide pipe (18) is fixedly connected to the bottom of the filter box (3). A cover is threadedly connected to one end of the dust guide pipe (18).

6. The waste heat recovery and utilization device for a vacuum sintering furnace as described in claim 5, characterized in that: A second fixing block (20) is fixedly connected to one side of the filter box (3). A through-hole (25) is opened on one side of the filter box (3). A baffle (21) is provided on one side of the filter box (3). A sealing strip (22) is fixedly connected to one side of the baffle (21). The baffle (21) is slidably connected to the inside of the through-hole (25) through the sealing strip (22). A third fixing block (23) is fixedly connected to one side of the baffle (21). The second fixing block (20) and the third fixing block (23) are fixedly connected by bolts. A handle is fixedly provided on one side of the baffle (21).

7. The waste heat recovery and utilization device for a vacuum sintering furnace as described in claim 1, characterized in that: The water tank (6) is equipped with a copper pipe (24) inside. The copper pipe (24) is integrated with the water tank (6). One end of the copper pipe (24) passes through the top of the water tank (6) and extends into the inner cavity of the connecting pipe (5). The bottom of the water tank (6) is fixedly connected to a second exhaust pipe (7). The other end of the copper pipe (24) passes through the bottom of the water tank (6) and extends into the inner cavity of the second exhaust pipe (7).

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