Condensate recovery device and recovery method for steam heating system

Abstract

The present invention relates to the field of condensate recovery technology, specifically a condensate recovery device for a steam heating system and a recovery method thereof, comprising a workbench, a recovery mechanism, comprising a buffer tank and a water storage tank installed on the workbench, a water pump installed between the buffer tank and the water storage tank, a water pump having a water pump installed on a water pumping pipe, and a discharge end of the water pump connected to the water storage tank; an air inlet pipe and an air outlet pipe are connected to the buffer tank, and a breathable plate is provided inside the buffer tank. The purpose of the present invention is to provide a condensate recovery device for a steam heating system and a recovery method thereof, which can automatically calculate the amount of disinfectant according to the amount of condensate, thereby avoiding certain errors in manual disinfection, resulting in excessive or insufficient disinfectant, resulting in unsatisfactory disinfection effect of condensate, and further affecting the recovery of condensate; at the same time, automation can highly improve work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of condensed water recovery, and in particular to a condensed water recovery device for a steam heating system and a recovery method thereof. Background Art

[0002] Steam is widely used in various industries as a clean and safe energy carrier, such as power generation, petroleum, chemical industry, printing and dyeing, papermaking, textile, brewing, rubber, ceramics and other industrial fields. After releasing the latent heat of vaporization in various steam-using equipment, steam becomes saturated condensate at almost the same temperature and pressure. Since the operating pressure of steam is greater than the atmospheric pressure, the condensate has heat, and the higher the pressure and temperature, the more heat the condensate has, and the greater the proportion of the total heat of steam. Recovering the heat of condensate and effectively utilizing it has great energy-saving potential. At present, after the condensate is recovered, staff are still required to add disinfectant to disinfect the condensate before it can be recycled. However, there are certain errors in the manual addition of disinfectant, resulting in excessive or insufficient amount of disinfectant, resulting in unsatisfactory disinfection effect of condensate, which in turn affects the recovery of condensate. Summary of the Invention

[0003] The purpose of the present invention is to provide a condensate recovery device and a recovery method for a steam heating system, which can automatically calculate the amount of disinfectant according to the amount of condensate, so as to avoid certain errors when manually adding disinfectant, resulting in excessive or insufficient amount of disinfectant, resulting in unsatisfactory disinfection effect of condensate, and thus affecting the recovery of condensate; at the same time, automation can greatly improve work efficiency.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a condensate recovery device for a steam heating system, comprising a workbench, a recovery mechanism, a buffer tank and a water storage tank installed on the workbench, a water pump installed between the buffer tank and the water storage tank, a water pumping pump is installed with a water pumping pipe, and the discharge end of the water pump is connected to the water storage tank; an air inlet pipe and an air outlet pipe are connected to the buffer tank, an air permeable plate is provided inside the buffer tank, a sealing plate a without air permeability is provided on a part of the upper part of the air permeable plate, a sealing plate b is slidingly provided on the bottom of the buffer tank, a floating plate is provided above the sealing plate b, and airtight sealing plates c are provided on both sides of the air permeable plate; after steam and condensed water flow into the interior of the buffer tank, the air permeable plate is impacted by steam; after condensed water enters the interior of the buffer tank, the floating plate is affected by buoyancy and moves upward, and the movement of the floating plate drives the sealing plate b to move upward to seal one side of the air permeable plate , and after the float plate moves up to a certain position and contacts with the sealing plate a, the interior of the buffer tank is completely closed on one side of the air permeable plate; the preheating mechanism comprises a through pipe arranged inside the buffer tank and extending to the outside of the buffer tank, a push rod is provided inside the through pipe, a magnetic ring is sleeved on the outer side of the through pipe, and the magnetic ring is connected to the floating plate, and when the floating plate moves upward under the buoyancy force, the push rod is driven upward by the magnetic attraction with the bottom of the push rod, and a vertical pipe is provided at the bottom of the through pipe that is connected to the interior of the buffer tank, and one end of the vertical pipe is connected to a surrounding pipe surrounding the outside of the water pumping pipe; a feeding mechanism comprises a piston rod that moves with the push rod, a fixed seat is provided at the bottom of the workbench, a piston cylinder and a storage cylinder are provided on the fixed seat, and the discharge pipe of the storage cylinder is connected to the piston cylinder, and the piston rod extracts the disinfectant inside the storage cylinder when the piston rod moves upward, and pushes the disinfectant inside the piston cylinder into the interior of the water storage tank when the piston rod moves downward.

[0005] Preferably, a vent hole is provided in the middle of the sealing plate a, and a frustum adapted to the vent hole is provided above the floating plate.

[0006] Preferably, after steam enters the buffer tank, the steam impacts and passes through the air permeable plate.

[0007] Preferably, the floating plate drives the sealing plate b to move upward, and the sealing plate b comes into contact with the breathable plate and seals the breathable plate during the upward movement.

[0008] Preferably, after the floating plate moves to a certain position, the frustum on the floating plate blocks the vent holes on the sealing plate a, and at this time, the sealing plate b is completely fitted with the breathable plate.

[0009] Preferably, the magnetic ring moves along the outside of the surrounding tube, and the magnetic ring is magnetically connected to the bottom of the push rod. When the floating plate moves upward, the floating plate drives the push rod upward through the magnetic attraction between the magnetic ring and the bottom of the push rod.

[0010] Preferably, one end of the vertical tube extends to the interior of the surrounding tube and is communicated with the buffer tank, and initially the bottom of the push rod blocks the one end of the vertical tube.

[0011] Preferably, after the push rod moves upward, the condensed water inside the buffer tank enters the interior of the vertical pipe, and the vertical pipe is connected to the surrounding pipe. After the condensed water inside the vertical pipe enters the interior of the surrounding pipe, it surrounds the outside of the pumping pipe to preheat the pumping pipe. The surrounding pipe is connected to the pumping pipe, and a timing valve is provided at the connection between the surrounding pipe and the pumping pipe.

[0012] Preferably, a connecting rod is provided at one end of the push rod, the connecting rod is connected to the piston rod, a sealing plate a connected to the water tank is provided on the fixing seat, the sealing plate a is connected to the piston cylinder, and a one-way valve is provided on the discharge pipe of the storage cylinder.

[0013] A method for recovering condensed water using the condensed water recovery device of the steam heating system comprises the following steps:

[0014] S1: Steam enters the buffer tank through the air inlet pipe, impacts the air permeable plate, and is discharged from the air outlet pipe;

[0015] S2: Condensate accumulates inside the buffer tank and is driven upward by the buoyancy of the floating plate. After the floating plate moves to a certain position, the water pump is started to pump the condensate inside the buffer tank into the water storage tank for collection.

[0016] S3: The push rod is driven to move upward while the floating plate moves upward. When the push rod moves upward, the condensed water inside the buffer tank surrounds the pumping pipe through the vertical pipe;

[0017] S4: In addition, the piston rod is driven to move inside the piston cylinder while the float plate moves up, and the disinfectant inside the storage cylinder is extracted. While the condensed water inside the buffer tank is pumped into the water storage tank, the piston rod moves in the opposite direction to add the disinfectant inside the piston cylinder to the inside of the water storage tank.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the process of the push rod moving upward, the push rod drives the connecting rod to move, and the connecting rod drives the piston rod to move. The piston rod is inside the piston cylinder and extracts the disinfectant inside the storage cylinder, so that the disinfectant enters the interior of the piston cylinder. In the process of the water pump extracting the condensed water inside the buffer tank, the condensed water continues to decrease, and the float plate continues to move downward. At this time, the push rod also drives the piston rod downward through the connecting rod. The piston rod moves downward inside the piston cylinder, which will push the disinfectant extracted from the piston cylinder into the water storage tank through the feeding pipe. In this way, the amount of disinfectant can be automatically calculated according to the amount of condensed water, thereby avoiding certain errors in manual disinfection, resulting in excessive or insufficient disinfection, resulting in unsatisfactory disinfection effect of condensed water, and thus affecting the recovery of condensed water; at the same time, automation can improve work efficiency.

[0020] 2. In the process of extracting the condensed water inside the buffer tank according to the present invention, the sealing plate b gradually moves downward. At this time, the overlapping part of the air permeable plate and the sealing plate b gradually decreases, and the air inlet pipe is located at the bottom of the buffer tank. At the same time, with the vacuum pump on the air outlet pipe of the buffer tank, the steam enters the air permeable plate and will first impact the overlapping part of the bottom of the air permeable plate and the sealing plate b, and then move upward and be extracted through the vacuum pump and the exhaust pipe. A large amount of steam will not pass through the non-overlapping part of the top of the air permeable plate and the sealing plate b and flow to the top of the condensed water, thereby not affecting the extraction of the condensed water; thereby, the discharge of steam can be maintained while the accumulated condensed water is extracted, and there is no need to shut down the steam circulation when extracting the condensed water, thereby improving work efficiency; and avoiding frequent starting and stopping of power components, reducing the service life of power components.

[0021] 3. In the present invention, when the floating plate moves upward, the floating plate drives the push rod to move upward. After the push rod moves upward, the bottom of the push rod is no longer at the top of the blocked vertical pipe. Therefore, a part of the condensed water inside the buffer tank will flow into the interior of the vertical pipe, and the condensed water flows into the interior of the surrounding pipe through the vertical pipe. Since the surrounding pipe is designed around the pumping pipe, the condensed water inside the surrounding pipe can preheat the pumping pipe. When the pump is started, the temperature difference can be reduced when the pumping pipe extracts the condensed water inside the buffer tank, avoiding a large difference between the temperature of the condensed water inside the buffer tank and the temperature of the pumping pipe itself, which damages the life of the pumping pipe and increases the cost. At the same time, preheating can help reduce heat loss and improve energy efficiency. For example, in cold climates, preheating can prevent the condensed water from cooling too quickly in the pumping pipe and causing freezing or solidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 This is a partial cross-sectional view of the recovery mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the recovery mechanism portion of the present invention;

[0026] Figure 5 This is the second schematic diagram of the recovery mechanism portion of the present invention;

[0027] Figure 6 This is a second partial cross-sectional view of the recovery mechanism of the present invention;

[0028] Figure 7 The third partial cross-sectional view of the recovery mechanism of the present invention;

[0029] Figure 8 This is a partial cross-sectional view of the connection portion between the recovery mechanism and the preheating mechanism of the present invention;

[0030] Figure 9 The second partial cross-sectional view of the connection portion between the recovery mechanism and the preheating mechanism of the present invention;

[0031] Figure 10 The third partial cross-sectional view of the connection portion between the recovery mechanism and the preheating mechanism of the present invention;

[0032] Figure 11 For the present invention Figure 9 Enlarged view of part a.

[0033] In the figure: 1. Workbench; 2. Recovery mechanism; 21. Buffer tank; 22. Breathable plate; 23. Water pump; 24. Water pump pipe; 25. Water storage tank; 26. Sealing plate a; 27. Sealing plate b; 28. Floating plate; 29. ​​Sealing plate c; 3. Preheating mechanism; 31. Surrounding pipe; 32. Vertical pipe; 33. Through pipe; 34. Magnetic ring; 35. Push rod; 4. Feeding mechanism; 41. Fixed seat; 42. Piston cylinder; 44. Storage cylinder; 45. Connecting rod; 46. Feeding pipe; 47. Piston rod. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The present invention provides a condensate recovery device for a steam heating system and a recovery method thereof, comprising a workbench 1, a recovery mechanism 2, a buffer tank 21 and a water storage tank 25 installed on the workbench 1, a water pump 23 installed between the buffer tank 21 and the water storage tank 25, a water pump 23 is installed on the water pump 23, a water pump pipe 24 is installed on the water pump 23, and the drainage end of the water pump 23 is connected to the water storage tank 25; an air inlet pipe and an air outlet pipe are connected to the buffer tank 21, an air permeable plate 22 is provided inside the buffer tank 21, a sealing plate a26 without an air permeability function is provided on a portion above the air permeable plate 22, a sealing plate b27 is slid on the bottom of the buffer tank 21, a floating plate 28 is provided above the sealing plate b27, and airtight sealing plates c29 are provided on both sides of the air permeable plate 22; after steam and condensed water flow into the buffer tank 21, the air permeable plate 22 is impacted by the steam; the interior of the buffer tank 21 enters a cold After the water condenses, the floating plate 28 moves upward under the influence of buoyancy. While the floating plate 28 moves, it drives the sealing plate b27 to move upward to close one side of the breathable plate 22. After the floating plate 28 moves to a certain position, it contacts the sealing plate a26. At this time, the interior of the buffer tank 21 is completely sealed on one side of the breathable plate 22. A vent is provided in the middle of the sealing plate a26, and a frustum adapted to the vent is provided above the floating plate 28. After the steam enters the buffer tank 21, the steam impacts and passes through the breathable plate 22. After condensed water accumulates inside the buffer tank 21, the floating plate 28 moves upward under the influence of buoyancy. The floating plate 28 drives the sealing plate b27 to move upward. During the upward movement of the sealing plate b27, it fits with the breathable plate 22 and seals the breathable plate 22. After the floating plate 28 moves to a certain position, the frustum on the floating plate 28 blocks the vent on the sealing plate a26. At this time, the sealing plate b27 is completely fitted with the breathable plate 22.

[0036] See Figures 1 to 7As shown, steam enters the buffer tank 21 through the air inlet pipe, impacts the air permeable plate 22, and is discharged from the air outlet pipe. In the process of condensed water accumulation in the buffer tank 21, the condensed water will drive the float plate 28 to move upward through buoyancy. In the process of the float plate 28 moving upward, the float plate 28 drives the sealing plate b27 to move. In the process of the sealing plate b27 gradually moving, the sealing plate b27 moves in contact with the air permeable plate 22. After the condensed water accumulates to a certain amount, the cone on the float plate 28 closes the air hole on the sealing plate a26. At the same time, the sealing plate b27 completely closes one side of the air permeable plate 22, and cooperates with the sealing plate c29 on both sides of the air permeable plate 22. The design allows the steam to enter the buffer tank 21 and only impact the air permeable plate 22 without passing through the air permeable plate 22. The steam only passes through the top of the air permeable plate 22 and is discharged from the air outlet pipe. At this time, the water pump 23 can be started, and the water pump 23 pumps the air below the sealing plate a26 through the water pumping pipe 24. The condensed water is extracted into the interior of the water storage tank 25; in addition, in the process of extracting the condensed water inside the buffer tank 21, the sealing plate b27 gradually moves downward, at this time, the overlapping part of the air permeable plate 22 and the sealing plate b27 gradually decreases, and the air inlet pipe is designed to be located at the bottom of the buffer tank 21, and at the same time, with the air pump on the air outlet pipe of the buffer tank 21, the steam entering the air permeable plate 22 will first impact the overlapping part of the bottom of the air permeable plate 22 and the sealing plate b27, and then move upward and be extracted through the air pump and the exhaust pipe, and no large amount of steam will pass through the non-overlapping part of the top of the air permeable plate 22 and the sealing plate b27 and flow to the top of the condensed water, thereby not affecting the extraction of the condensed water; thereby, the discharge of steam can be maintained while the accumulated condensed water is extracted, and there is no need to shut down the steam circulation when extracting the condensed water, thereby improving work efficiency; and avoiding frequent starting and stopping of power components, which reduces the service life of power components;

[0037] In addition, a design is adopted in which the steam first enters the buffer tank 21 and is then pumped into the water storage tank 25. This double-tank design allows the steam and condensed water to enter the buffer tank 21, impact the air permeable plate 22, and lose most of their impact force before being pumped out by the water pump 23. This can reduce the damage to the water pump 23 caused by the impact force of the steam and condensed water.

[0038] The preheating mechanism 3 includes a through pipe 33 arranged inside the buffer tank 21 and extending to the outside of the buffer tank 21, a push rod 35 is arranged inside the through pipe 33, and a magnetic ring 34 is sleeved on the outside of the through pipe 33. The magnetic ring 34 is connected to the floating plate 28. When the floating plate 28 moves upward under the buoyancy, the push rod 35 is driven to move upward by the magnetic attraction with the bottom of the push rod 35. A vertical pipe 32 communicating with the inside of the buffer tank 21 is provided at the bottom of the through pipe 33, and one end of the vertical pipe 32 is connected to a surrounding pipe 31 surrounding the outside of the water pumping pipe 24; the magnetic ring 34 moves along the outside of the surrounding pipe 31, and the magnetic ring 34 is magnetically attracted to the bottom of the push rod 35, and the floating plate 28 moves upward. When moving upward, the float plate 28 drives the push rod 35 upward through the magnetic attraction force between the magnetic ring 34 and the bottom of the push rod 35. One end of the vertical tube 32 extends to the inside of the surrounding tube 31 and is connected to the buffer tank 21. Initially, the bottom of the push rod 35 blocks one end of the vertical tube 32. After the push rod 35 moves upward, the condensed water in the buffer tank 21 enters the inside of the vertical tube 32. The vertical tube 32 is connected with the surrounding tube 31. The condensed water in the vertical tube 32 enters the inside of the surrounding tube 31 and then surrounds the outside of the water pumping pipe 24 to preheat the water pumping pipe 24. The surrounding tube 31 is connected with the water pumping pipe 24, and a timing valve is provided at the connection between the surrounding tube 31 and the water pumping pipe 24.

[0039] See Figures 8 to 11 As shown, during the upward movement of the float plate 28, the float plate 28 drives the magnetic ring 34 to move upward. Since the magnetic ring 34 is connected to the bottom of the push rod 35 by a strong magnetic attraction, the float plate 28 drives the push rod 35 to move upward when the float plate 28 moves upward. After the push rod 35 moves upward, the bottom of the push rod 35 is no longer on the top of the blocked vertical pipe 32. Therefore, a part of the condensed water inside the buffer tank 21 will flow into the interior of the vertical pipe 32, and the condensed water flows into the interior of the surrounding pipe 31 through the vertical pipe 32. Since the surrounding pipe 31 is designed around the water pumping pipe 24, the condensed water inside the surrounding pipe 31 can preheat the water pumping pipe 24, and can be used to pump water when the water pump 23 is started. When the water pipe 24 extracts the condensed water from the buffer tank 21, the temperature difference can be reduced, thereby avoiding a large temperature difference between the condensed water inside the buffer tank 21 and the temperature of the pumping pipe 24 itself, which may damage the life of the pumping pipe 24 and increase costs; at the same time, preheating can help reduce heat loss and improve energy efficiency. For example, in cold climate conditions, preheating can prevent the condensed water from cooling too quickly in the pumping pipe 24 and causing freezing or solidification; in addition, in the process of the pumping pump 23 extracting the condensed water from the buffer tank 21, since a timing valve is provided at the connection between the surrounding pipe 31 and the pumping pipe 24, the condensed water inside the surrounding pipe 31 can be extracted to the inside of the water storage tank 25 along with the condensed water inside the pumping pipe 24.

[0040] The feeding mechanism 4 includes a piston rod 47 that moves with the push rod 35. A fixed seat 41 is provided at the bottom of the workbench 1. A piston cylinder 42 and a storage cylinder 44 are provided on the fixed seat 41. The discharge pipe of the storage cylinder 44 is connected to the piston cylinder 42. When the piston rod 47 moves upward inside the piston cylinder 42, the disinfectant inside the storage cylinder 44 is extracted. When the piston rod 47 moves downward inside the piston cylinder 42, the disinfectant inside the piston cylinder 42 is pushed into the water storage tank 25; a connecting rod 45 is provided at one end of the push rod 35, and the connecting rod 45 is connected to the piston rod 47. A sealing plate a26 that is connected to the water storage tank 25 is provided on the fixed seat 41. The sealing plate a26 is connected to the piston cylinder 42, and a one-way valve is provided on the discharge pipe of the storage cylinder 44;

[0041] In addition, during the upward movement of the push rod 35, the push rod 35 drives the connecting rod 45 to move, and the connecting rod 45 drives the piston rod 47 to move. The piston rod 47 is inside the piston cylinder 42 and extracts the disinfectant inside the storage cylinder 44, so that the disinfectant enters the interior of the piston cylinder 42. In the process of the water pump 23 extracting the condensed water inside the buffer tank 21, the condensed water continues to decrease, and the float 28 continues to move downward. At this time, the push rod 35 also drives the piston rod 47 downward through the connecting rod 45, and the piston rod 47 moves downward inside the piston cylinder 42, which will push the disinfectant extracted from the piston cylinder 42 into the water storage tank 25 through the feeding pipe 46. In this way, the amount of disinfectant can be automatically calculated according to the amount of condensed water, thereby avoiding certain errors in manual disinfection, resulting in excessive or insufficient disinfection, resulting in unsatisfactory disinfection effect of condensed water, and thus affecting the recovery of condensed water; at the same time, automation can improve work efficiency;

[0042] See also Figure 10 As shown, the upward tilted design of the feeding pipe 46 can prevent a portion of the disinfectant from being fed into the water storage tank 25 by itself, thereby affecting the amount of disinfectant fed.

[0043] A method for recovering condensed water using the condensed water recovery device of the steam heating system comprises the following steps:

[0044] S1: Steam enters the buffer tank 21 through the air inlet pipe, impacts the air permeable plate 22, and is discharged from the air outlet pipe;

[0045] S2: Condensed water accumulates inside the buffer tank 21 and is driven upward by the buoyancy of the float plate 28. After the float plate 28 moves to a certain position, the pump 23 is activated to pump the condensed water inside the buffer tank 21 into the water storage tank 25 for collection.

[0046] S3: The push rod 35 is driven to move upward while the floating plate 28 moves upward. When the push rod 35 moves upward, the condensed water inside the buffer tank 21 surrounds the water pumping pipe 24 through the vertical pipe 32;

[0047] S4: In addition, while the float 28 moves upward, the piston rod 47 is driven to move inside the piston cylinder 42 and extract the disinfectant inside the storage cylinder 44. While the condensed water inside the buffer tank 21 is pumped into the water storage tank 25, the piston rod 47 moves in the opposite direction to add the disinfectant inside the piston cylinder 42 to the inside of the water storage tank 25.

[0048] Working principle: Steam enters the buffer tank 21 through the air inlet pipe, impacts the breathable plate 22, and is discharged from the air outlet pipe. In the process of condensed water accumulation in the buffer tank 21, the condensed water will drive the float plate 28 to move upward through the buoyancy. In the process of the float plate 28 moving upward, the float plate 28 drives the sealing plate b27 to move. In the process of the sealing plate b27 gradually moving, the sealing plate b27 moves in contact with the breathable plate 22. After the condensed water accumulates to a certain amount, the cone on the float plate 28 closes the vent hole on the sealing plate a26. At the same time, the sealing plate b27 completely closes one side of the breathable plate 22, and cooperates with the sealing plate c29 on both sides of the breathable plate 22. It can make the steam enter the buffer tank 21 and only impact the breathable plate 22 instead of passing through the breathable plate 22. The steam only passes through the top of the breathable plate 22 After that, it is discharged through the air outlet pipe. At this time, the water pump 23 can be started, and the water pump 23 extracts the condensed water under the sealing plate a26 into the inside of the water storage tank 25 through the water pump 24. In addition, in the process of extracting the condensed water inside the buffer tank 21, the sealing plate b27 gradually moves downward. At this time, the overlapping part of the air permeable plate 22 and the sealing plate b27 gradually decreases, and the air inlet pipe is designed to be located at the bottom of the buffer tank 21. At the same time, with the air pump on the air outlet pipe of the buffer tank 21, the steam enters the air permeable plate 22 and will first impact the overlapping part of the bottom of the air permeable plate 22 and the sealing plate b27, and then move upward and be extracted through the air pump and the exhaust pipe. There will not be a large amount of steam passing through the non-overlapping part of the top of the air permeable plate 22 and the sealing plate b27 to circulate above the condensed water, thereby not affecting the extraction of the condensed water.

[0049] During the upward movement of the float plate 28, the float plate 28 drives the magnetic ring 34 to move upward. Since the magnetic ring 34 is connected to the bottom of the push rod 35 by a strong magnetic attraction, the float plate 28 drives the push rod 35 to move upward when the float plate 28 moves upward. After the push rod 35 moves upward, the bottom of the push rod 35 is no longer blocking the top of the vertical pipe 32. Therefore, a part of the condensed water inside the buffer tank 21 will flow into the interior of the vertical pipe 32, and the condensed water flows into the interior of the surrounding pipe 31 through the vertical pipe 32. Since the surrounding pipe 31 is designed around the water pumping pipe 24, the condensed water inside the surrounding pipe 31 can preheat the water pumping pipe 24, and the water pumping pipe 24 can be started when the water pump 23 is started. When the condensed water in the buffer tank 21 is extracted by the pump 24, the temperature difference can be reduced, thereby preventing a large temperature difference between the condensed water in the buffer tank 21 and the temperature of the water extraction pipe 24 itself, which would damage the life of the water extraction pipe 24 and increase costs. At the same time, preheating can help reduce heat loss and improve energy efficiency. For example, in cold climates, preheating can prevent the condensed water from cooling too quickly in the water extraction pipe 24 and causing freezing or solidification. In addition, when the water extraction pump 23 extracts the condensed water from the buffer tank 21, since a timing valve is provided at the connection between the surrounding pipe 31 and the water extraction pipe 24, the condensed water in the surrounding pipe 31 can be extracted into the water storage tank 25 along with the condensed water in the water extraction pipe 24.

[0050] In addition, during the upward movement of the push rod 35, the push rod 35 drives the connecting rod 45 to move, and the connecting rod 45 drives the piston rod 47 to move. The piston rod 47 is inside the piston cylinder 42 and extracts the disinfectant inside the storage cylinder 44, so that the disinfectant enters the interior of the piston cylinder 42. During the process of the water pump 23 extracting the condensed water inside the buffer tank 21, the condensed water continues to decrease, and the float 28 continues to move downward. At this time, the push rod 35 also drives the piston rod 47 to move downward through the connecting rod 45. The piston rod 47 moves downward inside the piston cylinder 42, which will push the disinfectant extracted from the piston cylinder 42 into the interior of the water storage tank (25) through the feeding pipe (46).

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A condensate recovery device for a steam heating system, comprising a workbench (1), characterized in that: The recovery mechanism (2) comprises a buffer tank (21) and a water storage tank (25) mounted on a workbench (1); a water pump (23) is mounted between the buffer tank (21) and the water storage tank (25); a water pump (23) is mounted on a water pumping pipe of the water pump (23); a water discharge end of the water pump (23) is connected to the water storage tank (25); an air inlet pipe and an air outlet pipe are connected to the buffer tank (21); a breathable plate (22) is arranged inside the buffer tank (21); a sealing plate a (26) without a breathable function is arranged on a portion of the upper portion of the breathable plate (22); a sealing plate b (27) is slidably mounted on the bottom of the buffer tank (21); a floating plate (28) is arranged above the sealing plate b (27); and airtight sealing plates c (29) are arranged on both sides of the breathable plate (22); After steam and condensed water flow into the interior of the buffer tank (21), the air permeable plate (22) is impacted by steam; after condensed water enters the interior of the buffer tank (21), the floating plate (28) moves upward under the influence of buoyancy, and while the floating plate (28) moves, it drives the sealing plate b (27) to move upward to seal one side of the air permeable plate (22), and after the floating plate (28) moves up to a certain position, it contacts the sealing plate a (26), and at this time, the interior of the buffer tank (21) on the side of the air permeable plate (22) is completely sealed; The preheating mechanism (3) comprises a through pipe (33) arranged inside the buffer tank (21) and extending to the outside of the buffer tank (21); a push rod (35) is arranged inside the through pipe (33); a magnetic ring (34) is sleeved on the outside of the through pipe (33); the magnetic ring (34) is connected to the floating plate (28); when the floating plate (28) moves upward under buoyancy, the push rod (35) is driven to move upward by the magnetic attraction force with the bottom of the push rod (35); a vertical pipe (32) communicating with the inside of the buffer tank (21) is arranged at the bottom of the through pipe (33); one end of the vertical pipe (32) is communicated with a surrounding pipe (31) surrounding the outside of the water pumping pipe (24); The feeding mechanism (4) includes a piston rod (47) that moves following the push rod (35). A fixed seat (41) is provided at the bottom of the workbench (1). A piston cylinder (42) and a storage cylinder (44) are provided on the fixed seat (41). The discharge pipe of the storage cylinder (44) is connected to the piston cylinder (42). When the piston rod (47) moves upward inside the piston cylinder (42), the disinfectant inside the storage cylinder (44) is extracted. When the piston rod (47) moves downward inside the piston cylinder (42), the disinfectant inside the piston cylinder (42) is pushed into the water storage tank (25).

2. The condensate recovery device for a steam heating system according to claim 1, characterized in that: A vent hole is provided in the middle of the sealing plate a (26), and a frustum adapted to the vent hole is provided above the floating plate (28).

3. The condensate recovery device for a steam heating system according to claim 1, characterized in that: After steam enters the buffer tank (21), the steam impacts and passes through the air permeable plate (22).

4. The condensate recovery device for a steam heating system according to claim 3, characterized in that: After condensed water accumulates inside the buffer tank (21), the floating plate (28) moves upward due to buoyancy, and the floating plate (28) drives the sealing plate b (27) to move upward. During the upward movement, the sealing plate b (27) adheres to the air permeable plate (22) and seals the air permeable plate (22).

5. The condensate recovery device for a steam heating system according to claim 4, characterized in that: After the floating plate (28) moves to a certain position, the frustum on the floating plate (28) blocks the vent holes on the sealing plate a (26), and at this time, the sealing plate b (27) is completely fitted with the breathable plate (22).

6. The condensate recovery device for a steam heating system according to claim 1, characterized in that: The magnetic ring (34) moves along the outer side of the surrounding tube (31), and the magnetic ring (34) is magnetically connected to the bottom of the push rod (35). When the floating plate (28) moves upward, the floating plate (28) drives the push rod (35) to move upward through the magnetic attraction force between the magnetic ring (34) and the bottom of the push rod (35).

7. The condensate recovery device for a steam heating system according to claim 1, characterized in that: One end of the vertical pipe (32) extends to the interior of the surrounding pipe (31) and is communicated with the buffer tank (21), and initially the bottom of the push rod (35) blocks one end of the vertical pipe (32).

8. The condensate recovery device for a steam heating system according to claim 1, characterized in that: After the push rod (35) moves upward, the condensed water in the buffer tank (21) enters the interior of the vertical pipe (32), and the vertical pipe (32) is connected to the surrounding pipe (31). After the condensed water in the vertical pipe (32) enters the interior of the surrounding pipe (31), it surrounds the outside of the pumping pipe (24) to preheat the pumping pipe (24). The surrounding pipe (31) is connected to the pumping pipe (24), and a timing valve is provided at the connection between the surrounding pipe (31) and the pumping pipe (24).

9. The condensate recovery device for a steam heating system according to claim 1, characterized in that: A connecting rod (45) is provided at one end of the push rod (35), and the connecting rod (45) is connected to the piston rod (47). A sealing plate a (26) connected to the water storage tank (25) is provided on the fixing seat (41), and the sealing plate a (26) is connected to the piston cylinder (42). A one-way valve is provided on the discharge pipe of the storage cylinder (44).

10. A method for recovering condensed water using the condensed water recovery device of the steam heating system described in any one of 1 to 9 above, characterized in that: The steps are as follows: S1: Steam enters the buffer tank (21) through the air inlet pipe, impacts the air permeable plate (22), and is discharged from the air outlet pipe; S2: Condensed water accumulates inside the buffer tank (21) and drives the floating plate (28) upward by buoyancy. After the floating plate (28) moves to a certain position, the condensed water inside the buffer tank (21) is pumped into the water storage tank (25) for collection by starting the water pump (23); S3: When the floating plate (28) moves upward, the push rod (35) is driven to move upward. When the push rod (35) moves upward, a portion of the condensed water inside the buffer tank (21) surrounds the water pumping pipe (24) through the vertical pipe (32); S4: In addition, while the float plate (28) moves upward, the piston rod (47) is driven to move inside the piston cylinder (42) and extract the disinfectant inside the storage cylinder (44). While the condensed water inside the buffer tank (21) is pumped into the water storage tank (25), the piston rod (47) moves in the opposite direction to add the disinfectant inside the piston cylinder (42) to the inside of the water storage tank (25).

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