Stainless steel chimney with waste heat recovery function

Abstract

The utility model discloses a stainless steel chimney with a waste heat recovery function, and relates to the technical field of chimneys. The chimney comprises a liquid storage tank, a chimney body is arranged in the liquid storage tank, the two ends of the chimney body extend to the outside of the liquid storage tank, a water inlet pipe and a water outlet pipe are communicated with the liquid storage tank, the water pump is fixedly installed on the liquid storage tank and communicated with the water inlet pipe, an electric valve is arranged on the water outlet pipe, and a pressing switch used for controlling opening and closing of the electric valve is arranged on the liquid storage tank. The liquid storage tank is provided with an opening and closing assembly for controlling the pressing switch to be opened and closed at set intervals, and the liquid storage tank is provided with a controller in signal connection with the electric valve, the pressing switch and the water pump. Signal linkage is achieved through cooperation of the controller and the opening and closing assembly, manual intervention is not needed, waste heat recovery and liquid circulation are automatically completed, liquid in the liquid storage tank can be discharged within the specified time, namely, the liquid in the liquid storage tank is discharged when the temperature reaches the specified range, and therefore the universality of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of chimneys, specifically, it relates to a stainless steel chimney with waste heat recovery. Background Technology

[0002] Chimneys are widely used exhaust devices in industrial production and daily life, mainly used to remove smoke and exhaust fumes to improve combustion conditions. From household stoves to large factories and power plants, chimneys are ubiquitous. However, when existing chimneys emit exhaust gases, the exhaust gases carry a large amount of heat. The direct emission of exhaust gases containing a large amount of heat causes a significant waste of energy and fails to meet the concept of energy conservation and environmental protection.

[0003] Chinese patent CN217685104U discloses a tail gas chimney with waste heat recovery function. The device has a liquid storage tank embedded in the chimney body. When the tail gas is emitted, the heat in the tail gas is quickly conducted to the liquid storage tank through the heat conduction cylinder and multiple annular heat conduction plates to heat the water in the liquid storage tank. The liquid inlet pipe continuously sends in the liquid to be heated, and the liquid outlet pipe discharges the heated liquid. This can effectively utilize the heat in the tail gas, which is in line with the concept of energy conservation and environmental protection. However, because the liquid inlet pipe continuously sends in the liquid to be heated and the liquid outlet pipe discharges the heated liquid, the liquid in the liquid storage tank is constantly being replaced. This makes it difficult to control the temperature of the liquid in the liquid storage tank to a specified temperature before discharge. In addition, the discharge time of the liquid in the liquid storage tank needs to be manually controlled, resulting in a low degree of automation.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a stainless steel chimney with waste heat recovery, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A stainless steel chimney with waste heat recovery includes: a liquid storage tank, inside which a chimney body is provided, the two ends of the chimney body extending to the outside of the liquid storage tank, and an inlet pipe and a drain pipe connected to the liquid storage tank.

[0008] A water pump is fixedly installed on the liquid storage tank and connected to the water inlet pipe. An electric valve is provided on the drain pipe. A push-button switch for controlling the opening and closing of the electric valve is provided on the liquid storage tank. An opening and closing assembly for controlling the opening and closing of the push-button switch at regular intervals is provided on the liquid storage tank. A controller connected to the electric valve, the push-button switch and the water pump is provided on the liquid storage tank.

[0009] The controller enables signal linkage, allowing for automatic waste heat recovery and liquid circulation without manual intervention. It can discharge the liquid in the storage tank within a specified time, thus improving the versatility of the device.

[0010] Optionally, the opening / closing component includes:

[0011] A fixed cylinder is fixedly installed on the liquid storage tank. The fixed cylinder is connected to the chimney body. A first rotating shaft is rotatably connected inside the fixed cylinder. Multiple partitions are fixedly installed at intervals along the circumference of the first rotating shaft. A groove is provided inside the fixed cylinder for the multiple partitions to move.

[0012] The second rotating shaft is connected to the first rotating shaft via a gearbox, which is fixedly mounted on the liquid storage tank. An abutment rod is vertically fixedly mounted on the second rotating shaft. The liquid storage tank is provided with a transmission component that cooperates with the abutment rod to control the push switch.

[0013] By utilizing the kinetic energy of the fluid within the chimney body to drive the opening and closing components, no additional power source is required, making it energy-saving and environmentally friendly. The speed and torque can be adjusted via gearbox transmission, allowing the contact rod to trigger the push switch at set time intervals, thereby realizing the timed opening and closing of the electric valve of the drain pipe. This facilitates control over the frequency of liquid replacement in the storage tank and optimizes the waste heat recovery effect.

[0014] Optionally, the transmission assembly includes:

[0015] The mounting block is fixedly installed on the liquid storage tank. Two movable plates are movably arranged opposite each other inside the mounting block. The mounting block has a movable groove for the two movable plates to move. A first spring is fixedly installed between the two movable plates. A movable rod and a pressing rod are fixedly installed on the two movable plates respectively. The pressing rod is arranged opposite to the pressing switch.

[0016] An abutment plate is fixedly installed relative to the abutment rod at one end of the movable rod away from the movable plate.

[0017] The movement of the abutment rod is transmitted to the push switch through the transmission component. The structure is simple and reliable, ensuring that the push switch can be stably triggered and reset, ensuring that the electric valve opens and closes according to the set requirements, and thus ensuring the normal operation of the liquid storage tank drainage function.

[0018] Optionally, a second spring is fitted onto the movable rod, with both ends of the second spring abutting against the contact plate and the mounting block, respectively.

[0019] When the contact plate is pushed by the contact rod, the contact plate compresses the second spring, and the second spring generates a reaction force to buffer the impact force of the contact rod. When the contact rod leaves, the second spring pushes the contact plate and the movable rod to reset, making the transmission process smoother and ensuring the accuracy of the push switch triggering.

[0020] Optionally, a pressing plate is fixedly installed at the end of the pressing rod that is away from the movable plate.

[0021] The increased pressure plate increases the contact area of ​​the push switch, making the pressing process smoother and reducing the likelihood of incomplete pressing or damage to the push switch. This improves the success rate and reliability of the push switch triggering, ensuring that the electric valve can open and close normally.

[0022] Optionally, an abutting ball that can abut against the abutting plate is fixedly installed on the abutting rod.

[0023] The contact ball reduces friction between itself and the contact plate, allowing the contact rod to rotate more smoothly and transmit force more accurately.

[0024] Optionally, the liquid storage tank is provided with a stirring assembly, which includes a motor, a stirring shaft and stirring blades. The stirring shaft is rotatably disposed inside the liquid storage tank. The motor is fixedly mounted on the liquid storage tank and is used to drive the stirring shaft to rotate. The stirring blades are fixedly mounted on the stirring shaft. The motor is signal-connected to the controller. A turbulence groove is provided through the stirring blades.

[0025] The stirring component makes the liquid in the storage tank heat up more evenly, improving the heat exchange efficiency between the liquid and the chimney body, thereby enhancing the waste heat recovery effect. The turbulence channel further enhances the turbulence of the liquid, destroys the liquid boundary layer, and makes heat transfer faster, which helps to recover waste heat more fully.

[0026] Optionally, a liquid level sensor that is signal-connected to the controller is fixedly installed on the liquid storage tank.

[0027] The liquid level sensor monitors the liquid level in the storage tank in real time and transmits the signal to the controller. The controller controls the start and stop of the water pump according to the set liquid level threshold to maintain the liquid level in the storage tank within a suitable range, which can prevent liquid from overflowing or the liquid level from being too low, and ensure the safe and stable operation of the equipment.

[0028] Optionally, the chimney body includes a heat exchange tube and an exhaust pipe connected together. The heat exchange tube is arranged in a multi-S-shaped interconnected pipe structure inside the liquid storage tank, and the exhaust pipe is located outside the liquid storage tank.

[0029] The multi-S-shaped connecting tube structure increases the contact area between the heat exchange tube and the liquid, prolongs the residence time of the flue gas in the heat exchange tube, makes the heat exchange more complete, improves the waste heat recovery efficiency, and can more effectively utilize the heat in the flue gas.

[0030] Optionally, the end of the heat exchange tube opposite to the exhaust pipe is connected to a connecting bucket.

[0031] The connecting hopper is used to connect to the external flue gas duct, guiding the flue gas smoothly into the heat exchange tube. Its large diameter allows the flue gas to flow in more smoothly, reducing the flow resistance of the flue gas, thus facilitating the access of the flue gas and ensuring that the flue gas can enter the heat exchange tube for waste heat recovery in an efficient manner. This reduces energy loss during the flow of the flue gas, improves the performance of the entire waste heat recovery system, and makes the waste heat recovery process more stable and efficient.

[0032] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art. Of course, any product implementing this utility model does not necessarily need to achieve all of the following advantages at the same time:

[0033] 1. By setting up an opening and closing component, the controller and the opening and closing component work together to achieve signal linkage, without manual intervention, and automatically complete the waste heat recovery and liquid circulation. It can discharge the liquid in the storage tank within a specified time, that is, the liquid in the storage tank is discharged when it reaches the specified temperature range, thereby improving the versatility of the device.

[0034] 2. By incorporating a push-button switch and a contact ball, the force-bearing area of ​​the push-button switch is increased through the press plate, making the pressing process smoother and reducing the likelihood of incomplete pressing or damage to the push-button switch. This improves the success rate and reliability of the push-button switch triggering, ensuring that the electric valve can open and close normally. The contact ball reduces friction between the push-button switch and the contact plate, making the contact rod rotate more smoothly and transmitting force more accurately.

[0035] 3. By incorporating a stirring component, the liquid in the storage tank can be heated more evenly, improving the heat exchange efficiency between the liquid and the chimney body, thereby enhancing the waste heat recovery effect. The turbulence channel further enhances the turbulence of the liquid, disrupts the liquid boundary layer, and makes heat transfer more rapid, which helps to recover waste heat more fully.

[0036] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0037] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0038] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0039] Figure 2 This utility model Figure 1 A structural diagram from another perspective;

[0040] Figure 3 This is a schematic diagram of the structure of the stirring assembly of this utility model;

[0041] Figure 4 This is a schematic diagram of the structure of the electric valve of this utility model;

[0042] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A;

[0043] Figure 6 This is a schematic diagram of the structure of the second spring of this utility model;

[0044] Figure 7 This is a schematic diagram of the gearbox structure of this utility model;

[0045] Figure 8 This is a schematic diagram of the structure of the tank body of this utility model.

[0046] The attached diagram lists the components represented by each number as follows:

[0047] 1. Storage tank; 2. Water pump; 3. Inlet pipe; 4. Drain pipe; 5. Electric valve; 6. Liquid level sensor; 7. Chimney body; 71. Heat exchange tube; 72. Exhaust pipe; 8. Stirring assembly; 81. Stirring blade; 82. Stirring shaft; 83. Motor; 9. Opening and closing assembly; 91. Fixed cylinder; 92. Baffle plate; 93. First rotating shaft; 94. Gearbox; 95. Second rotating shaft; 96. Transmission assembly; 961. Pressing rod; 962. Contact plate; 963. Movable rod; 964. Mounting block; 965. First spring; 966. Movable plate; 97. Contact rod; 10. Controller; 11. Connecting hopper; 12. Press switch; 13. Turbulence groove; 14. Pressing plate; 15. Contact ball; 16. Second spring; 17. Movable groove; 18. Tank body.

[0048] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings.

[0050] Please see Figure 1-8As shown, this embodiment provides a stainless steel chimney with waste heat recovery, including a liquid storage tank 1, inside which is a chimney body 7. The two ends of the chimney body 7 extend to the outside of the liquid storage tank 1. The liquid storage tank 1 is connected to an inlet pipe 3 and a drain pipe 4. A water pump 2 is fixedly installed on the liquid storage tank 1 and connected to the inlet pipe 3. An electric valve 5 is provided on the drain pipe 4. A push switch 12 for controlling the opening and closing of the electric valve 5 is provided on the liquid storage tank 1. An opening and closing component 9 for controlling the opening and closing of the push switch 12 at regular intervals is provided on the liquid storage tank 1. A controller 10 is provided on the liquid storage tank 1 that is signal-connected to the electric valve 5, the push switch 12 and the water pump 2.

[0051] Specifically, in this embodiment, the drain end of the water pump 2 is connected to the inlet pipe 3, and its inlet end is connected to an external water supply device. The drain pipe 4 is connected to an external collection container. The controller 10 controls the water pump 2 to start, drawing external liquid (such as water) into the storage tank 1 through the inlet pipe 3. The liquid flows around the chimney body 7 in the storage tank 1, forming a heat exchange circuit. When the liquid in the storage tank 1 reaches a certain level, the water pump 2 stops running. When high-temperature flue gas passes through the chimney body 7, heat is transferred to the liquid in the storage tank 1 through the wall of the chimney body 7, raising the liquid temperature and achieving waste heat recovery. After the opening and closing component 9 reaches a preset time, it triggers the push switch 12, sending a signal to the controller 10 to control the operation. After receiving the signal, the controller 10 controls the electric valve 5 to open, and the heated liquid in the storage tank 1 is discharged through the drain pipe 4. After the liquid in the storage tank 1 is drained, the opening and closing component 9 closes the electric valve 5 through the controller 10. At the same time, the controller 10 controls the water pump 2 to start, and replenishes new low-temperature liquid through the water inlet pipe 3. The above process is repeated to collect the liquid in the storage tank 1. The entire system achieves signal linkage through the cooperation of the controller 10 and the opening and closing component 9. It can automatically complete the waste heat recovery and liquid circulation without manual intervention, and can discharge the liquid in the storage tank 1 within a specified time. That is, it realizes the timed and quantitative discharge of the liquid in the storage tank 1, thereby improving the versatility of the device.

[0052] It should be noted that in this embodiment, the chimney body 7 is used for the emission of flue gas. The flow rate of flue gas inside the chimney body 7 can be increased by setting up structures such as exhaust fans, which is the prior art.

[0053] In this embodiment, as Figures 1 to 8As shown, the opening and closing assembly 9 includes a fixed cylinder 91, which is fixedly installed on the liquid storage tank 1. The fixed cylinder 91 is connected to the chimney body 7. A first rotating shaft 93 is rotatably connected inside the fixed cylinder 91. Multiple partitions 92 are fixedly installed at intervals along the circumference of the first rotating shaft 93. The fixed cylinder 91 is provided with a groove 18 for the multiple partitions 92 to move. A second rotating shaft 95 is connected to the first rotating shaft 93 through a gearbox 94. The gearbox 94 is fixedly installed on the liquid storage tank 1. An abutment rod 97 is vertically fixedly installed on the second rotating shaft 95. The liquid storage tank 1 is provided with a transmission assembly 96 for cooperating with the abutment rod 97 to control the push switch 12. Specifically, when the flue gas in the chimney body 7 flows, it pushes the partitions on the first rotating shaft 93 inside the fixed cylinder 91. Rotating shaft 92 causes the first shaft 93 to drive the second shaft 95 to rotate via gearbox 94. The contact rod 97 on the second shaft 95 rotates accordingly. When the contact rod 97 rotates to a specific position, it cooperates with the transmission component 96 to trigger the push-button switch 12. This utilizes the kinetic energy of the fluid in the chimney body 7 to drive the opening and closing component 9, eliminating the need for an additional power source and saving energy. The gearbox 94 allows for adjustment of the rotation speed and torque, enabling the contact rod 97 to trigger the push-button switch 12 at set time intervals, thus achieving timed opening and closing of the electric valve 5 in the drain pipe 4. This facilitates control over the frequency of liquid replacement in the storage tank 1 and optimizes waste heat recovery. It should be noted that in this embodiment, a high-temperature sealing ring is provided between the fixed cylinder 91 and the first shaft 93. Furthermore, the structure of the gearbox 94 can be referenced... Figure 5 and Figure 7 As shown, the installation method of gearbox 94 with the first rotating shaft 93 and the second rotating shaft 95 is existing technology and will not be described here. Furthermore, the transmission ratio of gearbox 94 is 1:30, and when the flue gas velocity is 5m / s, the baffle 92 is triggered once every 2 hours.

[0054] In this embodiment, as Figures 1 to 6As shown, the transmission assembly 96 includes a mounting block 964, which is fixedly mounted on the liquid storage tank 1. Two movable plates 966 are movably arranged relative to each other within the mounting block 964. The mounting block 964 has a movable groove 17 for the two movable plates 966 to move. A first spring 965 is fixedly installed between the two movable plates 966. A movable rod 963 and a pressing rod 961 are respectively fixedly mounted on the two movable plates 966. The pressing rod 961 is positioned opposite the pressing switch 12. An abutment plate 962 is fixedly mounted relative to the abutment rod 97 at the end of the movable rod 963 away from the movable plate 966. Specifically, when the abutment rod 97 rotates, it contacts the abutment plate 962 and pushes it to move. The abutment plate 962, through the movable rod 963, drives the movable plate 966 to move within the movable groove 17 of the mounting block 964. Simultaneously, the movable plate 966... The movable pressing rod 961 moves, and the pressing plate 14 presses the pressing switch 12, opening the electric valve 5. As the contact plate 962 continues to move downward, the movable plate 966 at the top compresses the first spring 965. At this time, the pressing time of the pressing switch 12 can be increased to control the start time of the electric valve 5. When the contact rod 97 leaves the contact plate 962, the first spring 965 returns to its original position, the pressing rod 961 disengages from the pressing switch 12, and the electric valve 5 is closed. The movement of the contact rod 97 is transmitted to the pressing switch 12 through mechanical transmission, which is simple and reliable. It should be noted that in this embodiment, the lengths of the contact rod 97 and the contact plate 962 can be adjusted according to the actual situation. The setting of the first spring 965 facilitates the control of the pressing time of the pressing switch 12, so as to control the start time of the electric valve 5.

[0055] In this embodiment, as Figures 4 to 6 As shown, a second spring 16 is sleeved on the movable rod 963. The two ends of the second spring 16 abut against the contact plate 962 and the mounting block 964, respectively. Specifically, when the contact plate 962 is pushed by the contact rod 97, the contact plate 962 compresses the second spring 16, and the second spring 16 generates a reaction force to buffer the impact force of the contact rod 97. When the contact rod 97 is removed, the second spring 16 pushes the contact plate 962 and the movable rod 963 to reset.

[0056] In this embodiment, as Figures 4 to 6 As shown, a pressing plate 14 is fixedly installed at the end of the pressing rod 961 away from the movable plate 966. Specifically, the pressing plate 14 increases the force-bearing area of ​​the pressing switch 12, making the pressing process more stable and less likely to result in incomplete pressing or damage to the pressing switch 12. This improves the success rate and reliability of the pressing switch 12 triggering and ensures that the electric valve 5 can open and close normally.

[0057] In this embodiment, as Figures 4 to 6As shown, an abutting ball 15 that can abut against the abutting plate 962 is fixedly installed on the abutting rod 97. Specifically, when the abutting rod 97 rotates, the abutting ball 15 first contacts the abutting plate 962. Compared with planar contact, the abutting ball 15 can reduce the friction between the abutting plate 962, making the abutting rod 97 rotate more smoothly and transmitting the force more accurately.

[0058] In this embodiment, as Figures 1 to 3 As shown, a stirring assembly 8 is provided on the liquid storage tank 1. The stirring assembly 8 includes a motor 83, a stirring shaft 82, and a stirring blade 81. The stirring shaft 82 is rotatably disposed inside the liquid storage tank 1. The motor 83 is fixedly installed on the liquid storage tank 1 and is used to drive the stirring shaft 82 to rotate. The stirring blade 81 is fixedly installed on the stirring shaft 82. The motor 83 is signal-connected to the controller 10. A turbulence groove 13 is provided through the stirring blade 81. Specifically, when there is liquid in the liquid storage tank 1, the motor 83 is started by controlling the controller 10. The motor 83 drives the stirring shaft 82 to rotate, and the stirring blade 81 on the stirring shaft 82 rotates accordingly to stir the liquid in the liquid storage tank 1. The turbulence groove 13 on the stirring blade 81 can increase the turbulence of the liquid. The stirring assembly 8 can make the liquid in the liquid storage tank 1 heat more evenly, improve the heat exchange efficiency between the liquid and the chimney body 7, thereby improving the waste heat recovery effect. The turbulence groove 13 further enhances the turbulence of the liquid, destroys the liquid boundary layer, makes the heat transfer faster, and helps to recover waste heat more fully.

[0059] In this embodiment, as Figures 1 to 4 As shown, a liquid level sensor 6 is fixedly installed on the liquid storage tank 1 and is connected to the controller 10 via a signal. Specifically, the liquid level sensor 6 monitors the liquid level in the liquid storage tank 1 in real time and transmits the signal to the controller 10. The controller 10 controls the start and stop of the water pump 2 according to the set liquid level threshold to maintain the liquid level in the liquid storage tank 1 within a suitable range, which can prevent the liquid in the liquid storage tank 1 from overflowing or the liquid level from being too low, and ensure the safe and stable operation of the equipment.

[0060] In this embodiment, as Figures 1 to 3 As shown, the chimney body 7 includes a heat exchange tube 71 and an exhaust pipe 72 connected to each other. The heat exchange tube 71 is arranged in a multi-S-shaped connecting pipe structure inside the liquid storage tank 1, and the exhaust pipe 72 is located outside the liquid storage tank 1. Specifically, the heat exchange tube 71 is a serpentine structure composed of six consecutive 180° bends. Heat sources such as flue gas enter the heat exchange tube 71 from the connecting hopper 11 and flow in the heat exchange tube 71 with the multi-S-shaped connecting pipe structure, exchanging heat with the liquid in the liquid storage tank 1. The heat is transferred to the liquid, and the cooled flue gas is discharged from the exhaust pipe 72. The multi-S-shaped connecting pipe structure increases the contact area between the heat exchange tube 71 and the liquid, prolongs the residence time of the flue gas in the heat exchange tube 71, makes the heat exchange more complete, improves the waste heat recovery efficiency, and can more effectively utilize the heat in the flue gas.

[0061] In this embodiment, as Figures 1 to 3 As shown, the end of the heat exchange tube 71 facing away from the exhaust pipe 72 is connected to a connecting hopper 11. Specifically, the connecting hopper 11 is used to connect to an external flue gas duct, guiding the flue gas smoothly into the heat exchange tube 71. Its larger diameter allows the flue gas to flow in more smoothly, reducing the flow resistance of the flue gas, thereby facilitating the access of the flue gas and ensuring that the flue gas can enter the heat exchange tube 71 efficiently for waste heat recovery, reducing energy loss during the flow of the flue gas, improving the performance of the entire waste heat recovery system, and making the waste heat recovery process more stable and efficient.

[0062] Working principle:

[0063] By connecting the connecting hopper 11 to the external flue gas inlet, and then controlling the water pump 2 to start via the controller 10, external liquid (such as water) is pumped into the storage tank 1 through the water inlet pipe 3. When the specified liquid level is reached, the liquid level sensor 6 is activated and sends a signal to the controller 10, which stops the air pump 2. At this time, the liquid flows around the chimney body 7 within the storage tank 1, forming a heat exchange loop. When high-temperature flue gas passes through the chimney body 7, heat is transferred to the liquid in the storage tank 1 through the wall of the chimney body 7, and the liquid temperature rises. The system achieves high efficiency in waste heat recovery. Then, the controller 10 starts the motor 83, which drives the stirring shaft 82 to rotate. The stirring blades 81 on the stirring shaft 82 rotate accordingly, stirring the liquid in the storage tank 1. Afterwards, as the flue gas flows through the chimney body 7, the flue gas in the exhaust pipe pushes the baffle 92 on the first rotating shaft 93 inside the fixed cylinder 91 to rotate. The first rotating shaft 93 drives the second rotating shaft 95 to rotate through the gearbox 94. The abutment rod 97 on the second rotating shaft 95 rotates accordingly. When the abutment rod 97 rotates... The contact rod 97 contacts the contact plate 962 and pushes it to move. The contact rod 97 compresses the second spring 16. At the same time, the contact plate 962 drives the movable plate 966 to move within the movable groove 17 of the mounting block 964 via the movable rod 963. Simultaneously, the movable plate 966 drives the pressing rod 961 to move. The pressing plate 14 presses the pressing switch 12, opening the electric valve 5. The heated liquid in the storage tank 1 is discharged through the drain pipe 4. When the contact rod 97 leaves the contact plate 962, the first spring 965 and the second spring 16 return to their original positions. 961 releases the push switch 12, closes the electric valve 5, and simultaneously, the controller 10 controls the water pump 2 to start, replenishing new cryogenic liquid through the water inlet pipe 3. The above process is repeated to collect the liquid in the storage tank 1. The entire system achieves signal linkage through the cooperation of the controller 10 and the opening and closing component 9, and automatically completes waste heat recovery and liquid circulation without manual intervention. It can discharge the liquid in the storage tank 1 within a specified time, thus realizing the timed and quantitative discharge of liquid from the storage tank 1, thereby improving the versatility of the device.

[0064] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A stainless steel chimney with waste heat recovery, characterized in that, include: The liquid storage tank (1) has a chimney body (7) inside, the two ends of the chimney body (7) extend to the outside of the liquid storage tank (1), and the liquid storage tank (1) is connected to an inlet pipe (3) and a drain pipe (4). A water pump (2) is fixedly installed on the liquid storage tank (1) and connected to the water inlet pipe (3). An electric valve (5) is provided on the drain pipe (4). A push switch (12) for controlling the opening and closing of the electric valve (5) is provided on the liquid storage tank (1). An opening and closing assembly (9) for controlling the opening and closing of the push switch (12) is provided on the liquid storage tank (1) at regular intervals. A controller (10) is provided on the liquid storage tank (1) and connected to the electric valve (5), the push switch (12) and the water pump (2) via signals.

2. The stainless steel chimney with waste heat recovery according to claim 1, characterized in that, The opening / closing component (9) includes: A fixed cylinder (91) is fixedly installed on the liquid storage tank (1). The fixed cylinder (91) is connected to the chimney body (7). A first rotating shaft (93) is rotatably connected inside the fixed cylinder (91). Multiple partitions (92) are fixedly installed at intervals along the circumference of the first rotating shaft (93). A groove (18) is provided inside the fixed cylinder (91) for the multiple partitions (92) to move. The second rotating shaft (95) is connected to the first rotating shaft (93) via a gearbox (94). The gearbox (94) is fixedly installed on the liquid storage tank (1). An abutment rod (97) is vertically fixedly installed on the second rotating shaft (95). The liquid storage tank (1) is provided with a transmission assembly (96) for cooperating with the abutment rod (97) to control the push switch (12).

3. A stainless steel chimney with waste heat recovery according to claim 2, characterized in that, The transmission assembly (96) includes: The mounting block (964) is fixedly installed on the liquid storage tank (1). Two movable plates (966) are movably arranged opposite each other inside the mounting block (964). The mounting block (964) is provided with a movable groove (17) for the two movable plates (966) to move. A first spring (965) is fixedly installed between the two movable plates (966). A movable rod (963) and a pressing rod (961) are fixedly installed on the two movable plates (966) respectively. The pressing rod (961) is arranged opposite to the pressing switch (12). An abutment plate (962) is fixedly mounted on the end of the movable rod (963) away from the movable plate (966) relative to the abutment rod (97).

4. A stainless steel chimney with waste heat recovery according to claim 3, characterized in that, A second spring (16) is sleeved on the movable rod (963), and the two ends of the second spring (16) abut against the contact plate (962) and the mounting block (964) respectively.

5. A stainless steel chimney with waste heat recovery according to claim 3, characterized in that, The pressing rod (961) has a pressing plate (14) fixedly installed at the end opposite to the movable plate (966).

6. A stainless steel chimney with waste heat recovery according to claim 3, characterized in that, An abutment ball (15) that can abut against the abutment plate (962) is fixedly installed on the abutment rod (97).

7. A stainless steel chimney with waste heat recovery according to claim 1, characterized in that, The storage tank (1) is provided with a stirring assembly (8), which includes a motor (83), a stirring shaft (82) and a stirring blade (81). The stirring shaft (82) is rotatably disposed inside the storage tank (1). The motor (83) is fixedly installed on the storage tank (1) and is used to drive the stirring shaft (82) to rotate. The stirring blade (81) is fixedly installed on the stirring shaft (82). The motor (83) is signal connected to the controller (10). A turbulence groove (13) is provided through the stirring blade (81).

8. A stainless steel chimney with waste heat recovery according to claim 7, characterized in that, A liquid level sensor (6) that is signal-connected to the controller (10) is fixedly installed on the liquid storage tank (1).

9. A stainless steel chimney with waste heat recovery according to claim 1, characterized in that, The chimney body (7) includes a heat exchange tube (71) and an exhaust pipe (72) connected together. The heat exchange tube (71) is arranged in a multi-S-shaped connecting pipe structure inside the liquid storage tank (1), and the exhaust pipe (72) is located outside the liquid storage tank (1).

10. A stainless steel chimney with waste heat recovery according to claim 9, characterized in that, The end of the heat exchange tube (71) facing away from the exhaust pipe (72) is connected to a connecting bucket (11).

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