An automatic water replenishing device for a boiler blowdown water tank

Abstract

The present invention belongs to the technical field of automatic water replenishment for boiler blowdown water tanks, and specifically relates to an automatic water replenishment device for boiler blowdown water tanks, including a fixed box. The upper surface of the fixed box is fixedly connected with a first water inlet, and the upper surface of the fixed box is fixedly connected with a first water outlet. A second water inlet is arranged on one side of the fixed box, and a second water outlet is arranged on the other side of the fixed box. A first cavity is formed inside the fixed box, and a fixed frame is fixedly connected inside the fixed box. A second cavity is formed below the fixed frame. A heat exchange component is arranged on the upper surface of the fixed box. The heat exchange component includes a plurality of positioning tubes fixedly connected to the lower surface of the fixed frame. The cross-section of each positioning tube is rectangular, and a fixed groove is formed inside each positioning tube. By arranging a stirring component and a heat exchange component, the problem that high-temperature sewage will damage the sewage well is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic water replenishment for boiler blowdown tanks, and specifically relates to an automatic water replenishment device for boiler blowdown tanks. Background Technique

[0002] In a boiler system, a blowdown tank is used to collect and store the sewage discharged from the boiler. To ensure the normal operation of the boiler, it is necessary to timely discharge the water in the blowdown tank after utilization to maintain the stability of the boiler. Therefore, an efficient and automatic water replenishment device is crucial for the stable operation of the boiler system.

[0003] The existing automatic water replenishment device monitors the temperature change in the blowdown tank in real time through a water level sensor. When the water temperature is lower than the preset value, the sensor will send a signal to open the drain port to discharge the sewage, and then a new batch of sewage will be transported to the blowdown tank through a pipeline until the water level reaches the preset height. At this time, the water level sensor sends a signal again, and the water replenishment pump stops working.

[0004] During the operation of the existing boiler, it is necessary to regularly discharge the sewage to the sewage well outdoors. However, during this process, not only a large amount of steam overflows, causing the surrounding environment to be humid and the line of sight to be blurred, but also due to the usually high temperature of the boiler blowdown, the continuous high-temperature baking causes serious thermal stress damage to the inner wall of the sewage well, which leads to the gradual damage of the inner wall of the sewage well, and even the phenomenon of partial brick detachment, seriously affecting the normal discharge of sewage, bringing potential hazards to the smooth operation of the sewage discharge system. At the same time, frequent maintenance and replacement of the damaged well wall also greatly increase the maintenance costs of the enterprise, bringing unnecessary burdens to the enterprise operation.

[0005] Therefore, the invention provides an automatic water replenishment device for a boiler blowdown tank. Summary of the Invention

[0006] In order to make up for the deficiencies of the existing technology and solve at least one of the technical problems proposed in the background technique.

[0007] The technical solution adopted by the invention to solve its technical problems is as follows: An automatic water replenishment device for a boiler blowdown tank according to the invention includes a fixed box, a first water inlet is fixedly connected to the upper surface of the fixed box, a first water outlet is fixedly connected to the upper surface of the fixed box, a second water inlet is arranged on one side of the fixed box, and a second water outlet is arranged on the other side of the fixed box.

[0008] A first cavity is formed inside the fixed box. A fixed frame is fixedly connected inside the fixed box. A second cavity is formed below the fixed frame. A heat exchange component is arranged on the upper surface of the fixed box. The heat exchange component includes a plurality of positioning tubes fixedly connected to the lower surface of the fixed frame. The cross-section of each positioning tube is rectangular. A fixing groove is formed inside each positioning tube for storing makeup water. The heat exchange component passes makeup water into the first cavity and sewage used by the boiler into the second cavity. Since the sewage is at a high temperature, the sewage will exchange heat with the cooler makeup water through the positioning tubes.

[0009] A scraping component is arranged on the outer surface of each positioning tube. The scraping component is used to scrape off impurities attached to the surface of the positioning tube to prevent the impurities from affecting the heat exchange efficiency between the makeup water and the sewage.

[0010] The scraping movement of the scraping component will simultaneously drive a stirring component. The stirring component includes a stirring paddle rotatably arranged in the second cavity. The stirring paddle can make the sewage flow, improve the heat exchange efficiency, and enable the temperature of the sewage to fully exchange heat with the makeup water, rather than only the water near the positioning tube exchanging heat with the makeup water.

[0011] Preferably, the heat exchange component further includes a first hydraulic cylinder fixedly connected to the upper surface of the fixed box. The output end of the first hydraulic cylinder is fixedly connected to a fixing plate. Fixing rods are fixedly connected to the fixing plate at positions corresponding to each fixing groove. The bottom end of each fixing rod is fixedly connected to a bottom plate. The bottom plate is used to improve the heat exchange efficiency of the makeup water.

[0012] Preferably, the bottom plate can move up and down driven by the first hydraulic cylinder. By periodically driving the first hydraulic cylinder to drive the bottom plate to move up and down, the bottom plate will separate from the fixing groove, thereby taking the heated makeup water in the fixing groove away from the fixing groove, enabling the cooler makeup water above the first cavity to enter the fixing groove for heat exchange. At the same time, after the bottom plate brings the heat-exchanged makeup water into the upper first cavity, it accelerates the mixing of hot water and cold water and improves the heat exchange speed.

[0013] Preferably, an adsorption component is arranged on the top wall of the fixed box. The adsorption component includes an adsorption block fixedly connected to the top wall of the fixed box. The adsorption block is made of absorbent cotton. During the up and down movement of the first hydraulic cylinder, water may adhere to the circumferential surface of the output end and may then be brought into the first hydraulic cylinder. By arranging the adsorption block to adsorb the water at the output end of the first hydraulic cylinder, the service life of the first hydraulic cylinder is improved.

[0014] Preferably, the adsorption assembly includes a positioning ring fixedly connected to the top wall of the first cavity, an adsorption ring is arranged inside the positioning ring, the adsorption ring is fixed to the fixed box, two positioning rods are fixedly connected to the upper surface of the fixed plate, a positioning disk is fixedly connected to the upper surface of the two positioning rods, a plurality of positioning holes are opened on the upper surface of the positioning disk, and the output end of the first hydraulic cylinder drives the fixed plate to move upward so that the positioning disk will squeeze the adsorption ring that has been adsorbing water droplets on the circumferential surface of the first hydraulic cylinder for a long time, thereby squeezing the water out and flowing into the first cavity through the positioning holes, thereby extending the service life of the adsorption ring and making the adsorption ring have a longer service life.

[0015] Preferably, the scraping assembly includes a plurality of connecting plates fixedly connected to the lower surface of the fixed plate, each two of the connecting plates are located on both sides of the positioning tube, the lower surfaces of each two of the connecting plates are fixedly connected to the same positioning frame, the upper surface of the positioning frame is provided with an oblique groove, and the length of each of the connecting plates is greater than the length of the fixing rod.

[0016] Preferably, when the fixing plate is driven by the first hydraulic cylinder to move the bottom plate upward, the fixing plate will also drive the connecting plate and the positioning frame to move up and down. The up and down movement of the positioning frame can scrape off the attachments in the sewage attached to the surface of the positioning pipe, thereby improving the heat exchange efficiency of the positioning pipe. It is also required that the length of the connecting plate is greater than the fixing rod, so that when the bottom plate is fixedly driven to disengage from the fixing groove, the positioning frame is still below the fixing frame, thereby protecting the first cavity and the second cavity from being separated from each other, and maintaining a sliding seal during the up and down sliding of the connecting plate.

[0017] Preferably, the stirring assembly includes a limit frame fixedly connected to one side of the positioning frame, the middle part of the limit frame is rotatably connected to a connecting shaft, a gear is fixedly connected to the circumferential surface of the connecting shaft, a rack is fixedly connected to the position of the fixed box corresponding to the gear, both ends of the connecting shaft are transmission-connected with a transmission belt, the end of the transmission belt away from the connecting shaft is transmission-connected with an auxiliary shaft, the position of the positioning frame corresponding to the auxiliary shaft is fixedly connected to a limit rod, the limit rod is rotatably connected to the auxiliary shaft, a stirring paddle is fixedly connected to the circumferential surface of the auxiliary shaft, and the stirring paddle is used to stir the sewage to improve the fluidity of the sewage.

[0018] Preferably, stirring components are symmetrically arranged on both sides of the positioning frame, so that the sewage on both sides of the positioning pipe can be fully stirred.

[0019] Preferably, during the up-and-down movement of the positioning frame driven by the first hydraulic cylinder, the gear is driven to move up and down along the rack plate, thereby causing the gear to rotate. The rotation of the gear drives the connecting shaft fixedly connected thereto. The connecting shaft drives two auxiliary shafts to rotate through the transmission at both ends. The two auxiliary shafts rotate under the limitation of the limiting rods, driving the stirring paddles on their respective circumferential surfaces to rotate, thereby stirring the sewage on both sides of the positioning pipe. The stirring paddle can rotate while moving up and down, enabling the high-temperature sewage on both sides of the positioning pipe to fully exchange heat with the makeup water, improving the heat exchange efficiency.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. For the automatic makeup water device for a boiler blowdown water tank described in the present invention, the makeup water enters the first cavity of the fixed box through the first water inlet. At the same time, the sewage after the boiler is used enters the second cavity through the second water inlet. In the positioning pipe below the fixed frame, part of the makeup water is stored in the fixed groove. Since the sewage has a relatively high temperature, it transfers energy through heat exchange with the low-temperature makeup water in the positioning pipe. To improve the heat exchange efficiency, a scraping component is provided on the surface of the positioning pipe. This component can scrape off the impurities attached to the outer surface of the positioning pipe, ensuring the effective heat exchange area during the heat exchange process, improving the heat exchange efficiency, and also changing the problem that the original high-temperature sewage would damage the sewage well, recovering and utilizing the waste heat of the high-temperature sewage, and achieving the energy-saving purpose of the boiler.

[0022] 2. For the automatic makeup water device for a boiler blowdown water tank described in the present invention, during the up-and-down movement of the first hydraulic cylinder, some makeup water may adhere to the circumferential surface of its output end. To prevent this water from entering the first hydraulic cylinder and potentially affecting its service life, an adsorption block made of absorbent cotton material is provided on the top wall of the fixed box. When the output end of the first hydraulic cylinder moves near the adsorption block, the adsorption block, with its good water absorption, can effectively adsorb and remove the water adhering to the circumferential surface of the output end, effectively preventing the makeup water from entering the first hydraulic cylinder, reducing the risk of mechanical failures caused by water, thereby extending the service life of the first hydraulic cylinder and ensuring the stability and reliability of the entire makeup water device. Description of the Drawings

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 is a perspective view of Embodiment 1 of the present invention;

[0025] Figure 2 is a structural schematic diagram of the main body of the present invention;

[0026] Figure 3It is a schematic diagram of the internal structures of the first cavity and the second cavity of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the positioning tube of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the connecting plate of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the stirring assembly of the present invention.

[0030] In the figure: 1. Fixed box;

[0031] 2. First water inlet; 21. First water outlet; 22. Second water inlet; 23. Second water outlet;

[0032] 3. First hydraulic cylinder; 31. First cavity; 32. Second cavity; 33. Fixed frame; 34. Fixed plate; 35. Fixed groove; 36. Fixed rod; 37. Bottom plate; 38. Connecting plate; 39. Positioning frame; 310. Inclined groove; 311. Positioning rod; 312. Positioning disc; 313. Positioning hole; 314. Positioning ring; 315. Adsorption ring; 316. Limiting frame; 317. Connecting shaft; 318. Gear; 319. Rack plate; 320. Transmission belt; 321. Auxiliary shaft; 322. Limiting rod; 323. Stirring paddle; 324. Positioning tube. Specific embodiments

[0033] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0034] Example 1: As Figures 1 to 6As shown in the figure, an automatic water replenishing device for a boiler blowdown water tank according to an embodiment of the present invention includes a fixed box 1. A first water inlet 2 is fixedly connected to the upper surface of the fixed box 1, and a first water outlet 21 is fixedly connected to the upper surface of the fixed box 1. A second water inlet 22 is provided on one side of the fixed box 1, and a second water outlet 23 is provided on the other side of the fixed box 1. A first cavity 31 is formed inside the fixed box 1. A fixed frame 33 is fixedly connected inside the fixed box 1. A second cavity 32 is formed below the fixed frame 33. A heat exchange component is provided on the upper surface of the fixed box 1. The heat exchange component includes a plurality of positioning tubes 324 fixedly connected to the lower surface of the fixed frame 33. The cross-section of each positioning tube 324 is rectangular. A fixed groove 35 is formed inside each positioning tube 324 for storing makeup water. The heat exchange component passes makeup water into the first cavity 31 and sewage used by the boiler into the second cavity 32. Since the sewage has a high temperature, the sewage will exchange heat with the lower-temperature makeup water through the positioning tubes 324; a scraping component is provided on the outer surface of each positioning tube 324 for scraping impurities attached to the surface of the positioning tube 324 to prevent the impurities from affecting the heat exchange efficiency between the makeup water and the sewage; the scraping movement of the scraping component will simultaneously drive a stirring component. The stirring component includes a stirring paddle 323 rotatably arranged in the second cavity 32. The stirring paddle 323 can make the sewage flow, improve the heat exchange efficiency, and enable the temperature of the sewage to fully exchange heat with the makeup water, rather than only the water near the positioning tube 324 exchanging heat with the makeup water.

[0035] Specifically, during the operation of existing boilers, sewage needs to be regularly discharged into a sewage well outdoors. However, during this process, not only a large amount of steam overflows, causing the surrounding environment to be humid and the line of sight to be blurred, but also due to the usually high temperature of the boiler blowdown, the continuous high-temperature roasting causes serious thermal stress damage to the inner wall of the sewage well. This leads to the gradual damage of the inner wall of the sewage well, and even the phenomenon of partial brick detachment, seriously affecting the normal discharge of sewage, bringing potential risks to the smooth operation of the sewage discharge system. At the same time, frequent repairs and replacements of the damaged well wall also greatly increase the maintenance costs of the enterprise, bringing unnecessary burdens to the enterprise operation;

[0036] Therefore, the present invention solves this problem by setting corresponding structures. First, the make-up water enters the first cavity 31 of the fixed box 1 through the first water inlet 2. At the same time, the sewage after being used by the boiler enters the second cavity 32 through the second water inlet 22. In the positioning pipe 324 below the fixed frame 33, part of the make-up water is stored in the fixed groove 35. Since the sewage has a relatively high temperature, it transfers energy through heat exchange with the low-temperature make-up water in the positioning pipe 324. To improve the heat exchange efficiency, a scraping component is arranged on the surface of the positioning pipe 324. This component can scrape off the impurities attached to the outer surface of the positioning pipe 324, ensuring the effective heat exchange area during the heat exchange process, improving the heat exchange efficiency, and also solving the problem that the original high-temperature sewage would damage the sewage well. The waste heat of the high-temperature sewage is recycled, achieving the energy-saving purpose of the boiler;

[0037] In addition, the movement of the scraping component drives the stirring paddle 323 in the stirring component to rotate in the second cavity 32. The rotation of the stirring paddle 323 causes the sewage to flow in the cavity, which not only increases the contact area between the sewage and the make-up water, but also enables the temperature of the sewage to exchange heat more fully with the make-up water, rather than being limited to the area near the positioning pipe 324.

[0038] Through the synergistic effect of the heat exchange component and the scraping component, the heat exchange efficiency between the make-up water and the sewage is effectively improved, ensuring the stable operation of the boiler system. At the same time, the introduction of the stirring component further enhances the fluidity of the sewage, making the heat exchange process more sufficient, contributing to energy conservation and consumption reduction, and improving the energy efficiency of the overall system;

[0039] It solves the problem that high-temperature sewage will damage the sewage well and effectively utilizes the resource of high-temperature sewage.

[0040] As Figure 5 shown, the heat exchange component of this embodiment further includes a first hydraulic cylinder 3 fixedly connected to the upper surface of the fixed box 1. The output end of the first hydraulic cylinder 3 is fixedly connected with a fixing plate 34. The fixing plate 34 is fixedly connected with a fixing rod 36 corresponding to the position of each fixed groove 35. The bottom end of each fixing rod 36 is fixedly connected with a bottom plate 37, and the bottom plate 37 is used to improve the heat exchange efficiency of the make-up water.

[0041] Specifically, the first hydraulic cylinder 3 pushes the fixing plate 34 and the fixing rod 36 to move up and down through its output end, so that the bottom plate 37 moves up and down in each positioning pipe 324, thereby periodically replacing the make-up water in the fixed groove 35, and further enhancing the heat exchange speed between the make-up water and the sewage.

[0042] As Figure 5As shown in the figure, the bottom plate 37 of this embodiment can move up and down driven by the first hydraulic cylinder 3. By periodically driving the first hydraulic cylinder 3 to drive the bottom plate 37 to move up and down, the bottom plate 37 will disengage from the fixed groove 35, thereby taking the heated makeup water in the fixed groove 35 away from the fixed groove 35, enabling the cooler makeup water above the first cavity 31 to enter the fixed groove 35 for heat exchange. At the same time, after the bottom plate 37 brings the heat-exchanged makeup water into the upper first cavity 31, the hot water and cold water are mixed, which improves the speed of heat exchange.

[0043] Specifically, by periodically driving the first hydraulic cylinder 3, the bottom plate 37 moves up and down driven by the first hydraulic cylinder 3. When the bottom plate 37 rises, it will disengage from the fixed groove 35 of the positioning tube 324, taking the heated makeup water away from the fixed groove 35, creating space for the new low-temperature makeup water to enter the fixed groove 35 for heat exchange. When the bottom plate 37 descends, it not only brings the heat-exchanged makeup water into the upper first cavity 31, but also promotes the mixing of hot water and cold water, thereby accelerating the heat exchange process and improving the overall heat exchange speed. This periodic movement not only ensures the continuous and efficient progress of heat exchange, but also further improves the heat exchange efficiency through the mixing of hot and cold water, contributing to a faster and more thorough energy transfer.

[0044] As Figure 5 shown in the figure, an adsorption component is provided on the top wall of the fixed box 1 of this embodiment. The adsorption component includes an adsorption block fixedly connected to the top wall of the fixed box 1. The adsorption block is made of absorbent cotton material. During the up and down movement of the first hydraulic cylinder 3, water may adhere to the circumferential surface of the output end, and then may be brought into the first hydraulic cylinder 3. By providing the adsorption block to adsorb the water on the output end of the first hydraulic cylinder 3, the service life of the first hydraulic cylinder 3 can be improved.

[0045] Specifically, during the up and down movement of the first hydraulic cylinder 3, some makeup water may adhere to the circumferential surface of its output end. To prevent this moisture from entering the interior of the first hydraulic cylinder 3 and potentially affecting its service life, an adsorption block made of absorbent cotton material is provided on the top wall of the fixed box 1. When the output end of the first hydraulic cylinder 3 moves near the adsorption block, the adsorption block, with its good water absorption property, can effectively adsorb and remove the moisture adhering to the circumferential surface of the output end, effectively preventing the makeup water from entering the interior of the first hydraulic cylinder 3, reducing the risk of mechanical failures caused by moisture, thereby extending the service life of the first hydraulic cylinder 3 and ensuring the stability and reliability of the entire makeup water device.

[0046] As Figure 5As shown in the figure, the adsorption component of this embodiment includes a positioning ring 314 fixed to the top wall of the first cavity 31. An adsorption ring 315 is arranged inside the positioning ring 314. The adsorption ring 315 is fixedly connected to the fixed box 1. Two positioning rods 311 are fixedly connected to the upper surface of the fixing plate 34. A positioning disk 312 is fixedly connected to the upper surfaces of the two positioning rods 311. A number of positioning holes 313 are formed in the upper surface of the positioning disk 312. When the output end of the first hydraulic cylinder 3 drives the fixing plate 34 to move upward, the positioning disk 312 will squeeze the adsorption ring 315 that has long adsorbed the water droplets on the circumferential surface of the first hydraulic cylinder 3, thereby squeezing out the water, which flows into the first cavity 31 through the positioning holes 313, thus extending the service life of the adsorption ring 315 and enabling the adsorption ring 315 to have a longer service cycle.

[0047] Specifically, during the process of the first hydraulic cylinder 3 driving the fixing plate 34 to move upward, the positioning rods 311 and the positioning disk 312 above the fixing plate 34 also rise accordingly. The upper surface of the positioning disk 312 is designed with a number of positioning holes 313. When the positioning disk 312 contacts the adsorption ring 315 that adsorbs the water droplets on the circumferential surface of the output end of the first hydraulic cylinder 3, it will moderately squeeze the adsorption ring 315. This squeezing effect not only helps the adsorption ring 315 release the adsorbed water, but also guides the water into the first cavity 31 through the positioning holes 313, realizing the recycling of water, effectively extending the service life of the adsorption ring 315, reducing the performance degradation caused by long-term saturated adsorption, and thus ensuring the continuous and efficient operation of the adsorption component.

[0048] Embodiment Two: As Figures 1 to 6 shown in the figure, compared with Embodiment One, another implementation manner of the present invention is as follows: The scraping component includes a number of connecting plates 38 fixed to the lower surface of the fixing plate 34. Every two connecting plates 38 are located on both sides of the positioning tube 324. The same positioning frame 39 is fixedly connected to the lower surfaces of every two connecting plates 38. An inclined slot 310 is formed in the upper surface of the positioning frame 39, and the length of each connecting plate 38 is greater than that of the fixed rod 36.

[0049] Specifically, the scraping component is fixed to the lower part of the fixing plate 34 through the connecting plates 38, and scrapes the impurities on the surface of the positioning tube 324 as the fixing plate 34 moves. The design of the inclined slot 310 of the positioning frame 39 helps the impurities slide off and avoid accumulation. The length of the connecting plate 38 exceeds that of the fixed rod 36, ensuring comprehensive scraping and not affecting the up and down movement of the bottom plate 37, achieving effective impurity cleaning and ensuring the heat exchange efficiency.

[0050] As Figure 4As shown, in this embodiment, when the fixing plate 34 is driven by the first hydraulic cylinder 3 to move the bottom plate 37 upward, the fixing plate 34 will also drive the connecting plate 38 and the positioning frame 39 to move up and down. The up and down movement of the positioning frame 39 can scrape off the attachments in the sewage attached to the surface of the positioning pipe 324, thereby improving the heat exchange efficiency of the positioning pipe 324. In addition, the length of the connecting plate 38 is required to be greater than the fixing rod 36, so that when the bottom plate 37 is fixedly driven to disengage from the fixing groove 35, the positioning frame 39 is still below the fixing frame 33, thereby protecting the first cavity 31 and the second cavity 32 from being separated from each other, and the connecting plate 38 maintains a sliding seal during the up and down sliding process.

[0051] Specifically, driven by the first hydraulic cylinder 3, the fixing plate 34 not only drives the bottom plate 37 to rise and fall, but also drives the connecting plate 38 and the positioning frame 39 to move up and down. The movement of the positioning frame 39 effectively scrapes off the attachments on the surface of the positioning tube 324, thereby improving the heat exchange efficiency. The length of the connecting plate 38 exceeds the design of the fixing rod 36, thereby ensuring that when the bottom plate 37 is separated from the fixing groove 35, the positioning frame 39 is still located below the fixing frame 33, thereby maintaining the isolation between the first cavity 31 and the second cavity 32. At the same time, the connecting plate 38 maintains a sliding seal during the sliding process, thereby not only enhancing the heat exchange effect, but also ensuring effective isolation and sealing between the cavities, thereby providing a more stable and efficient operating environment for the water replenishment device.

[0052] like Figure 6 As shown, the stirring assembly of this embodiment includes a limit frame 316 fixedly connected to one side of the positioning frame 39, the middle part of the limit frame 316 is rotatably connected to a connecting shaft 317, a gear 318 is fixedly connected to the circumferential surface of the connecting shaft 317, a rack is fixedly connected to the position of the fixed box 1 corresponding to the gear 318, both ends of the connecting shaft 317 are transmission-connected to a transmission belt 320, one end of the transmission belt 320 away from the connecting shaft 317 is transmission-connected to an auxiliary shaft 321, a limit rod 322 is fixedly connected to the position of the positioning frame 39 corresponding to the auxiliary shaft 321, the limit rod 322 is rotatably connected to the auxiliary shaft 321, a stirring paddle 323 is fixedly connected to the circumferential surface of the auxiliary shaft 321, and the stirring paddle 323 is used to stir the sewage to improve the fluidity of the sewage.

[0053] Specifically, the stirring component realizes automatic rotation along with the movement of the positioning frame 39 through the cooperation of the connecting shaft 317 fixed by the limit frame 316, the gear 318 and the rack. The meshing of the gear 318 and the rack drives the connecting shaft 317 to rotate, and then drives the auxiliary shaft 321 and the stirring paddle 323 thereon to rotate through the transmission belt 320. The stirring paddle 323 stirs the sewage to enhance its fluidity. This component not only does not require an additional power source, but also utilizes the self-movement of the water replenishment device to achieve the stirring of the sewage, thereby improving the heat exchange efficiency, promoting the energy transfer between sewage and replenishment water, and at the same time enhancing the self-cleaning ability of the system and extending the service life of the equipment.

[0054] As shown Figure 5 In the figure, stirring components are symmetrically arranged on both sides of the positioning frame 39 in this embodiment, so that the sewage on both sides of the positioning pipe 324 can be fully stirred.

[0055] Specifically, the stirring components symmetrically arranged on both sides of the positioning frame 39 can evenly and comprehensively stir the sewage on both sides of the positioning pipe 324 as the positioning frame 39 moves up and down, effectively breaking the static stratification of the water body, improving the overall fluidity of the sewage, ensuring sufficient mixing and heat exchange between the sewage and the makeup water, and significantly improving the heat exchange efficiency.

[0056] As shown Figure 6 In the figure, during the process of the positioning frame 39 moving up and down driven by the first hydraulic cylinder 3 in this embodiment, the gear 318 will move up and down along the rack plate 319, so that the gear 318 rotates. The rotation of the gear 318 will drive the connecting shaft 317 fixedly connected thereto. The connecting shaft 317 drives two auxiliary shafts 321 to rotate through the transmission belts 320 at both ends. The two auxiliary shafts 321 rotate under the limitation of the limiting rods 322, driving the stirring paddles 323 on their respective circumferential surfaces to rotate, so as to stir the sewage on both sides of the positioning pipe 324. The stirring paddle 323 can rotate while moving up and down, enabling the high-temperature sewage on both sides of the positioning pipe 324 to fully exchange heat with the makeup water, improving the heat exchange efficiency.

[0057] Specifically, driven by the first hydraulic cylinder 3, the positioning frame 39 moves up and down. This movement converts the linear motion into the rotational motion of the gear 318 through the interaction between the gear 318 and the rack plate 319. The rotation of the gear 318 then drives the connecting shaft 317 fixedly connected thereto to rotate. The connecting shaft 317 drives two auxiliary shafts 321 to rotate synchronously under the constraint of the limiting rods 322 through the transmission belts 320 at both ends. The stirring paddles 323 on the auxiliary shafts 321 rotate accordingly, not only moving up and down with the positioning frame 39, but also stirring in the water, forming a dynamic heat exchange environment, enabling the high-temperature sewage on both sides of the positioning pipe 324 to more fully exchange heat with the makeup water.

[0058] Working principle: First, the makeup water enters the first cavity 31 of the fixed box 1 through the first water inlet 2. At the same time, the sewage after being used by the boiler enters the second cavity 32 through the second water inlet 22. In the positioning pipe 324 below the fixed frame 33, part of the makeup water is stored in the fixed groove 35. Since the sewage has a higher temperature, it transfers energy by exchanging heat with the low-temperature makeup water in the positioning pipe 324. In order to improve the heat exchange efficiency;

[0059] Meanwhile, by periodically driving the first hydraulic cylinder 3, the bottom plate 37 moves up and down under the drive of the first hydraulic cylinder 3. When the bottom plate 37 rises, it will disengage from the fixing groove 35 of the positioning pipe 324, taking the heated make-up water away from the fixing groove 35, creating space for the new low-temperature make-up water to enter the fixing groove 35 for heat exchange. When the bottom plate 37 descends, it not only brings the heat-exchanged make-up water into the upper first cavity 31, but also promotes the mixing of hot water and cold water, thus accelerating the heat exchange process and improving the overall heat exchange speed. This periodic movement not only ensures the continuous and efficient progress of heat exchange, but also further improves the heat exchange efficiency through the mixing of cold and hot water, contributing to a faster and more sufficient energy transfer;

[0060] Moreover, a scraping component is arranged on the surface of the positioning pipe 324. This component is fixed under the fixing plate 34 through the connecting plate 38 and scrapes the impurities on the surface of the positioning pipe 324 as the fixing plate 34 moves. The inclined groove 310 design of the positioning frame 39 helps the impurities to slide off and avoid accumulation. The length of the connecting plate 38 exceeds that of the fixing rod 36, ensuring comprehensive scraping and not affecting the up-and-down movement of the bottom plate 37, achieving effective impurity cleaning and ensuring the heat exchange efficiency;

[0061] In addition, under the drive of the first hydraulic cylinder 3, the positioning frame 39 moves up and down. This movement converts the linear motion into the rotational motion of the gear 318 through the interaction between the gear 318 and the rack plate 319. The rotation of the gear 318 then drives the connecting shaft 317 fixedly connected to it to rotate. The connecting shaft 317 then drives two auxiliary shafts 321 to rotate synchronously under the constraint of the limiting rods 322 through the transmission belts 320 at both ends. The stirring paddles 323 on the auxiliary shafts 321 rotate accordingly, not only moving up and down with the positioning frame 39, but also stirring in the water, forming a dynamic heat exchange environment, enabling the high-temperature sewage on both sides of the positioning pipe 324 to exchange heat more fully with the make-up water;

[0062] Through the coordinated action of the heat exchange component, the scraping component and the stirring component, the heat exchange efficiency between the make-up water and the sewage is effectively improved, ensuring the stable operation of the boiler system. At the same time, the introduction of the stirring component further enhances the fluidity of the sewage, making the heat exchange process more sufficient, contributing to energy conservation and consumption reduction and improving the energy efficiency of the overall system;

[0063] The problem that the original high-temperature sewage would damage the sewage well is solved, the waste heat of the high-temperature sewage is recovered and utilized, and the energy-saving purpose of the boiler is achieved.

[0064] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic water replenishing device for a boiler sewage tank, comprising a fixed box (1), a first water inlet (2) fixedly connected to the upper surface of the fixed box (1), a first water outlet (21) fixedly connected to the upper surface of the fixed box (1), a second water inlet (22) arranged on one side of the fixed box (1), and a second water outlet (23) arranged on the other side of the fixed box (1), characterized in that: The fixed box (1) has a first cavity (31) formed inside, a fixed frame (33) fixedly connected inside, a second cavity (32) formed below the fixed frame (33), a heat exchange assembly provided on the upper surface of the fixed box (1), the heat exchange assembly comprising a plurality of positioning tubes (324) fixedly connected to the lower surface of the fixing frame (33), each positioning tube (324) having a rectangular cross-section, each positioning tube (324) having a fixed groove (35) formed inside, and the fixed groove (35) being connected to the inside of the first cavity (31), the fixed groove (35) being used to store feed water, the heat exchange assembly passes feed water into the first cavity (31) and passes wastewater after use of the boiler into the second cavity (32), thereby exchanging heat with the feed water in the positioning tube (324); The outer surface of each positioning tube (324) is provided with a scraping component, and the scraping component is used to scrape away impurities attached to the surface of the positioning tube (324); The scraping movement of the scraping component will simultaneously drive the stirring component, and the stirring component includes a stirring paddle (323) rotatably arranged in the second cavity (32), and the stirring paddle (323) can make the sewage flow so that the sewage can fully exchange heat with the makeup water; The heat exchange assembly further comprises a first hydraulic cylinder (3) fixedly connected to the upper surface of the fixed box (1), the output end of the first hydraulic cylinder (3) being fixedly connected to a fixed plate (34), the fixed plate (34) being fixedly connected to a fixed rod (36) at a position corresponding to each fixed groove (35), and the bottom end of each fixed rod (36) being fixedly connected to a bottom plate (37); The bottom plate (37) can move up and down under the drive of the first hydraulic cylinder (3). By periodically driving the first hydraulic cylinder (3) to drive the bottom plate (37) to move up and down, the bottom plate (37) will be separated from the fixed groove (35), and the feed water that has been heated in the fixed groove (35) will be taken away from the fixed groove (35), so that the feed water with a lower temperature above the first cavity (31) can enter the fixed groove (35) for heat exchange. At the same time, after the bottom plate (37) brings the feed water after heat exchange into the first cavity (31) above, the mixing of hot water and cold water is accelerated.

2. The automatic water replenishing device for a boiler sewage tank according to claim 1, characterized in that: The top wall of the fixed box (1) is provided with an adsorption component, the adsorption component comprising an adsorption block fixedly connected to the top wall of the fixed box (1), the adsorption block being made of a water-absorbing cotton material, and during the up and down movement of the first hydraulic cylinder (3), water may adhere to the circumferential surface of the output end and may be brought into the first hydraulic cylinder (3), and the water at the output end of the first hydraulic cylinder (3) is adsorbed by providing the adsorption block.

3. The automatic water replenishing device for a boiler sewage tank according to claim 2, characterized in that: The adsorption assembly comprises a positioning ring (314) fixedly connected to the top wall of the first cavity (31), an adsorption ring (315) is arranged inside the positioning ring (314), the adsorption ring (315) is fixedly connected to the fixed box (1), two positioning rods (311) are fixedly connected to the upper surface of the fixed plate (34), and a positioning disk (312) is fixedly connected to the upper surface of the two positioning rods (311), and a plurality of positioning holes (313) are opened on the upper surface of the positioning disk (312), and when the output end of the first hydraulic cylinder (3) drives the fixed plate (34) to move upward, the positioning disk (312) will squeeze the adsorption ring (315) that has long been adsorbing water droplets on the circumferential surface of the first hydraulic cylinder (3), squeeze out the water, and let it flow into the first cavity (31) through the positioning holes (313).

4. The automatic water replenishing device for a boiler sewage tank according to claim 1, characterized in that: The scraping assembly comprises a plurality of connecting plates (38) fixedly connected to the lower surface of the fixing plate (34), the connecting plates (38) being located on both sides of the positioning tube (324), the lower surfaces of every two connecting plates (38) being fixedly connected to the same positioning frame (39), the upper surface of the positioning frame (39) being provided with an inclined groove (310), and the length of each connecting plate (38) being greater than the length of the fixing rod (36).

5. The automatic water replenishing device for a boiler sewage tank according to claim 4, characterized in that: When the fixing plate (34) is driven by the first hydraulic cylinder (3) to move the bottom plate (37) upward, the fixing plate (34) also drives the connecting plate (38) and the positioning frame (39) to move up and down. The up and down movement of the positioning frame (39) can scrape off the attachments in the sewage attached to the surface of the positioning pipe (324). The length of the connecting plate (38) is greater than the fixing rod (36). When the fixing plate drives the bottom plate (37) to separate from the fixing groove (35), the positioning frame (39) is still below the fixing frame (33), thereby protecting the first cavity (31) and the second cavity (32) from being separated from each other. The connecting plate (38) maintains a sliding seal during the up and down sliding process.

6. The automatic water replenishing device for a boiler sewage tank according to claim 4, characterized in that: The stirring assembly comprises a limit frame (316) fixedly connected to one side of the positioning frame (39); a connecting shaft (317) is rotatably connected to the middle part of the limit frame (316); a gear (318) is fixedly connected to the circumferential surface of the connecting shaft (317); a rack is fixedly connected to the fixed box (1) at a position corresponding to the gear (318); both ends of the connecting shaft (317) are transmission-connected to a transmission belt (320); one end of the transmission belt (320) away from the connecting shaft (317) is transmission-connected to an auxiliary shaft (321); a limit rod (322) is fixedly connected to the position of the positioning frame (39) corresponding to the auxiliary shaft (321); the limit rod (322) is rotatably connected to the auxiliary shaft (321); a stirring paddle (323) is fixedly connected to the circumferential surface of the auxiliary shaft (321); the stirring paddle (323) is used to stir sewage to make the sewage flow.

7. The automatic water replenishing device for a boiler sewage tank according to claim 6, characterized in that: The two sides of the positioning frame (39) are symmetrically provided with stirring components, so that the sewage on the two sides of the positioning pipe (324) can be fully stirred.

8. The automatic water replenishing device for a boiler sewage tank according to claim 6, characterized in that: When the positioning frame (39) moves up and down under the drive of the first hydraulic cylinder (3), it drives the gear (318) to move up and down along the rack plate (319), thereby causing the gear (318) to rotate. The rotation of the gear (318) drives the connecting shaft (317) fixed thereto. The connecting shaft (317) drives the two auxiliary shafts (321) to rotate through the transmission belts (320) at both ends. The two auxiliary shafts (321) rotate under the limit of the limit rod (322), driving the stirring paddles (323) on their respective circumferential surfaces to rotate, thereby stirring the sewage on both sides of the positioning pipe (324). The stirring paddles (323) can also rotate while moving up and down, so that the high-temperature sewage on both sides of the positioning pipe (324) can fully exchange heat with the make-up water.

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