Blowdown expansion tank

Abstract

The utility model discloses a sewage expansion tank, and specifically relates to the technical field of expansion tanks, including an expansion tank, a heat exchange device is provided at the top of the inner cavity of the expansion tank, a heat conduction plate is fixedly provided at the bottom of the heat exchange device, a cleaning assembly is provided at the bottom of the heat conduction plate, and the cleaning assembly includes a rotating rod, a first scraper is fixedly provided at the top of the outer wall of the rotating rod, and the top of the first scraper contacts the bottom of the heat conduction plate, and is used to scrape off the water droplets on the bottom surface of the heat conduction plate. The utility model conducts the heat of water vapor to the heat exchange medium quickly through the heat conduction plate, thereby completing the recycling of the heat of water vapor, and uses a motor, a transmission rod and a rotating rod to drive the first scraper to rotate, scraping off the water droplets formed at the bottom of the heat conduction plate, so as to avoid the water droplets affecting the conduction of the heat of water vapor, and at the same time, four second scrapers rotate to scrape off the dirt on the inner wall of the expansion tank, thereby realizing automatic cleaning of the dirt, without manual operation, and more time-saving and labor-saving to use.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion vessels, more specifically to a sewage expansion vessel. Background Art

[0002] The sewage expander is also called the sewage expansion tank. The sewage expander is connected to the continuous sewage outlet of the boiler. It is used to reduce the pressure and expand the capacity of the boiler's sewage. The sewage is adiabatically expanded in the sewage expander to separate into secondary steam and waste hot water, and then expanded, reduced in pressure, and heat exchanged in the expander before being discharged. The secondary steam is led out by a special pipeline, and the waste hot water is automatically discharged through a float level valve or an overflow regulating valve. The heat energy can be recovered and reused.

[0003] At present, in order to reduce the emission of water vapor, a Chinese patent with the prior art publication number CN218883949U discloses a periodic sewage expansion container. The utility model uses a gas rotation device to make the water vapor fully contact with the cooling device, and the remaining water vapor that cannot be liquefied is discharged from the exhaust pipe, and the liquefied water vapor and the original liquid sewage are discharged from the sewage outlet pipe, which greatly reduces the emission of water vapor and reduces the possibility of forming ice ridges.

[0004] However, the above-mentioned prior art still has the following problems when used: although the use of a cooling device to recover the heat of water vapor can reduce the amount of water vapor emissions, when the water vapor liquefies to form water droplets at the bottom of the cooling device, the water droplets will hinder the conduction of heat, thereby reducing the efficiency of recovering the heat of the water vapor. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a sewage expansion tank, which recycles the heat of water vapor through a heat exchange device to reduce the dissipation of water vapor, and uses a driving component to drive the first scraper to rotate to scrape off the water droplets formed on the bottom of the heat conduction plate to prevent the water droplets from affecting the conduction of water vapor heat. At the same time, the four second scrapers rotate to scrape off the dirt on the inner wall of the expansion tank. No manual operation is required, and it is more time-saving and labor-saving to use, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage expansion container, including an expansion tank, a heat exchange device is provided at the top of the inner cavity of the expansion tank, a heat conduction plate is fixedly provided at the bottom of the heat exchange device, a cleaning component is provided at the bottom of the heat conduction plate, the cleaning component includes a rotating rod, a first scraper is fixedly sleeved on the top of the outer wall of the rotating rod, and the top of the first scraper is in contact with the bottom of the heat conduction plate, which is used to scrape off water droplets on the bottom surface of the heat conduction plate, four second scrapers are fixedly provided at the bottom of the rotating rod, the outer wall and the top of each second scraper are in contact with the inner wall of the expansion tank and the bottom of the heat exchange device respectively, and each second scraper is arranged on the outside of the first scraper, which is used to scrape off dirt on the inner wall of the expansion tank, and a driving component for driving the rotating rod to rotate is fixedly provided on the top of the expansion tank.

[0007] In a preferred embodiment, the driving assembly includes a hollow tube, the bottom end of which passes through the top of the expansion tank and is fixed to the top of the heat exchange device, a motor is fixed inside the hollow tube, a transmission rod is fixed at the bottom end of the motor output shaft, the bottom end of the transmission rod passes through the heat exchange device and the heat conduction plate in sequence and is fixed to the top of the rotating rod, and is used to drive the rotating rod to rotate, a dustproof net is fixed inside the hollow tube, and the dustproof net is arranged above the motor.

[0008] In a preferred embodiment, the heat exchange device includes a disc, which is fixed on the top of the inner cavity of the expansion tank and fixed on the top of the heat conduction plate. A spiral tube is fixedly embedded in the disc, one end of the spiral tube is fixedly connected to a liquid inlet pipe, and the other end of the spiral tube is fixedly connected to a liquid outlet pipe. One end of the liquid outlet pipe and the liquid inlet pipe both pass through the heat exchange device and the expansion tank in sequence and extend to the outside of the expansion tank. The disc is fixed on the bottom of the hollow tube, and the disc is movably sleeved on a transmission rod, and the transmission rod is arranged on the inner side of the spiral tube.

[0009] In a preferred embodiment, a sewage inlet pipe is fixedly penetrated through the outer wall of one side of the expansion tank, and the sewage inlet pipe is connected to the interior of the expansion tank, an exhaust pipe is fixedly penetrated through the outer wall of the other side of the expansion tank, and the exhaust pipe is connected to the interior of the expansion tank, and a sewage discharge pipe is fixedly penetrated through the bottom of the expansion tank, and the sewage discharge pipe is connected to the interior of the expansion tank.

[0010] In a preferred embodiment, the sewage inlet pipe, the exhaust pipe and the sewage discharge pipe are all fixedly provided with solenoid valves for controlling the opening and closing of the sewage inlet pipe, the exhaust pipe and the sewage discharge pipe.

[0011] In a preferred embodiment, a controller for controlling the motor and the solenoid valve is fixedly embedded on the front end outer wall of the expansion tank.

[0012] In a preferred embodiment, three supporting legs are fixedly provided on the bottom of the expansion tank to improve the stability of the expansion tank.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model quickly conducts the heat of water vapor to the heat exchange medium through the heat conduction plate, thereby completing the recovery and utilization of the heat of water vapor, and uses a motor, a transmission rod and a rotating rod to drive the first scraper to rotate, so as to scrape off the water droplets formed on the bottom of the heat conduction plate, so as to prevent the water droplets from affecting the conduction of the heat of water vapor, and at the same time, the four second scrapers rotate to scrape off the dirt on the inner wall of the expansion tank, so as to realize automatic cleaning of the dirt, without the need for manual operation, and is more time-saving and labor-saving to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the expansion tank of the utility model;

[0017] Figure 3 This is a structural diagram of the transmission rod and the rotating rod of the utility model;

[0018] Figure 4 It is a top view of the overall structure of the utility model;

[0019] Figure 5 It is a cross-sectional view of the expansion tank of the utility model.

[0020] The reference numerals are: 1, expansion tank; 2, heat exchange device; 3, heat conduction plate; 4, cleaning assembly; 5, driving assembly; 6, sewage inlet pipe; 7, exhaust pipe; 8, sewage discharge pipe; 9, solenoid valve; 10, controller; 11, support leg;

[0021] 201, disc; 202, spiral tube; 203, liquid inlet tube; 204, liquid outlet tube;

[0022] 401, rotating rod; 402, first scraper; 403, second scraper;

[0023] 501, hollow tube; 502, motor; 503, transmission rod; 504, dustproof net. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Refer to the instruction manual Figure 1-5The utility model provides a sewage expansion container, including an expansion tank 1, wherein a heat exchange device 2 is provided at the top of the inner cavity of the expansion tank 1, specifically, the heat exchange device 2 comprises a disc 201, wherein the disc 201 is fixed at the top of the inner cavity of the expansion tank 1 and fixedly arranged at the top of the heat conducting plate 3, wherein a spiral tube 202 is fixedly embedded inside the disc 201, wherein one end of the spiral tube 202 is fixedly connected to a liquid inlet pipe 203, and the other end of the spiral tube 202 is fixedly connected to a liquid outlet pipe 204, wherein one end of the liquid outlet pipe 204 and one end of the liquid inlet pipe 203 both penetrate the heat exchange device 2 and the expansion tank 1 in sequence and extend to the outside of the expansion tank 1, and a heat conducting plate 3 is fixedly arranged at the bottom of the heat exchange device 2;

[0026] In addition, a sewage inlet pipe 6 is fixedly penetrated through the outer wall of one side of the expansion tank 1, and the sewage inlet pipe 6 is connected to the interior of the expansion tank 1. An exhaust pipe 7 is fixedly penetrated through the outer wall of the other side of the expansion tank 1, and the exhaust pipe 7 is connected to the interior of the expansion tank 1. A sewage discharge pipe 8 is fixedly penetrated through the bottom of the expansion tank 1, and the sewage discharge pipe 8 is connected to the interior of the expansion tank 1. The sewage inlet pipe 6, the exhaust pipe 7 and the sewage discharge pipe 8 are all fixedly provided with solenoid valves 9 for controlling the opening and closing of the sewage inlet pipe 6, the exhaust pipe 7 and the sewage discharge pipe 8. A controller 10 for controlling the motor 502 and the solenoid valve 9 is fixedly embedded in the outer wall of the front end of the expansion tank 1.

[0027] When in use, first connect the sewage inlet pipe 6 to the sewage pipe of the boiler, and then connect the water inlet pipe and the drainage pipe to the submersible pump respectively. The submersible pump transports the heat exchange medium to the spiral tube 202, and the sewage in the boiler flows into the expansion tank 1, where it undergoes secondary boiling at a lower pressure to separate water vapor and sewage. The sewage is discharged through the sewage pipe 8. During the rising process of the water vapor, it contacts the heat conduction plate 3. The heat is conducted by the heat conduction plate 3 to the disc 201 and absorbed by the heat exchange medium in the spiral tube 202. Then the liquid medium is transported out by the submersible pump, thereby completing the recovery of the heat of the water vapor, thereby reducing the emission of water vapor and the possibility of forming icicles.

[0028] Further, such as Figure 2 , 3 As shown in Figures 5 and 6, in order to increase the speed at which the heat exchange device 2 absorbs heat, a cleaning assembly 4 is provided at the bottom of the heat conducting plate 3, and the cleaning assembly 4 includes a rotating rod 401, and a first scraper 402 is fixedly sleeved on the top of the outer wall of the rotating rod 401, and the top of the first scraper 402 is in contact with the bottom of the heat conducting plate 3, and is used to scrape off water drops on the bottom surface of the heat conducting plate 3, and four second scrapers 403 are fixedly provided at the bottom of the rotating rod 401, and the outer wall and top of each second scraper 403 are in contact with the inner wall of the expansion tank 1 and the bottom of the heat exchange device 2 respectively, and each second scraper 403 is arranged on the outside of the first scraper 402, and is used to scrape off dirt on the inner wall of the expansion tank 1;

[0029] In order to realize the automatic rotation of the first scraper 402 and the second scraper 403, a driving assembly 5 is fixedly passed through the top of the expansion tank 1, and the bottom of the driving assembly 5 is fixed to the top of the rotating rod 401. Specifically, the driving assembly 5 includes a hollow tube 501, the bottom end of which passes through the top of the expansion tank 1 and is fixed to the top of the heat exchange device 2, and a motor 502 is fixed inside the hollow tube 501. A transmission rod 503 is fixed at the bottom end of the output shaft of the motor 502, and the bottom end of the transmission rod 503 passes through the heat exchange device 2 and the heat conducting plate 3 in sequence and is fixed to the top of the rotating rod 401;

[0030] In addition, the transmission rod 503 is arranged on the inner side of the spiral tube 202, and the rotating rod 401 is driven to rotate by the motor 502. No manual operation is required, which is more time-saving and labor-saving to use. A dustproof net 504 is fixed inside the hollow tube 501, and the dustproof net 504 is arranged above the motor 502. The dust and impurities in the outside air are blocked by the dustproof net 504. The disc 201 is fixed at the bottom of the hollow tube 501, and the disc 201 is movably sleeved on the transmission rod 503.

[0031] The transmission rod 503 is driven by the motor 502 to drive the rotating rod 401 to rotate. When the rotating rod 401 rotates, it drives the first scraper 402 to rotate and scrape the bottom of the heat conducting plate 3 to scrape off the water droplets formed on the bottom of the heat conducting plate 3, so as to prevent the water droplets from affecting the conduction of water vapor heat. At the same time, the four second scrapers 403 at the bottom of the rotating rod 401 rotate to scrape off the dirt on the inner wall of the expansion tank 1, so as to realize automatic cleaning of the dirt without manual operation, which is more time-saving and labor-saving to use.

[0032] In addition, three supporting legs 11 are fixedly provided at the bottom of the expansion tank 1 to improve the stability of the expansion tank 1 .

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sewage expansion container, comprising an expansion tank (1), characterized in that: A heat exchange device (2) is provided at the top of the inner cavity of the expansion tank (1), and a heat conduction plate (3) is fixedly provided at the bottom of the heat exchange device (2); A cleaning assembly (4) is provided at the bottom of the heat conducting plate (3), and the cleaning assembly (4) comprises a rotating rod (401), a first scraper (402) is fixedly sleeved on the top of the outer wall of the rotating rod (401), and the top of the first scraper (402) is in contact with the bottom of the heat conducting plate (3) and is used to scrape water drops on the bottom surface of the heat conducting plate (3), and four second scrapers (403) are fixedly provided at the bottom of the rotating rod (401), and the outer wall and the top of each second scraper (403) are in contact with the inner wall of the expansion tank (1) and the bottom of the heat exchange device (2) respectively, and each second scraper (403) is arranged on the outside of the first scraper (402) and is used to scrape dirt on the inner wall of the expansion tank (1); A driving assembly (5) for driving the rotating rod (401) to rotate is fixedly provided on the top of the expansion tank (1).

2. The sewage expansion container according to claim 1, characterized in that: The driving assembly (5) comprises a hollow tube (501), the bottom end of which passes through the top of the expansion tank (1) and is fixed to the top of the heat exchange device (2), a motor (502) is fixedly arranged inside the hollow tube (501), a transmission rod (503) is fixedly arranged at the bottom end of the output shaft of the motor (502), the bottom end of the transmission rod (503) passes through the heat exchange device (2) and the heat conduction plate (3) in sequence and is fixed to the top of the rotating rod (401), and is used to drive the rotating rod (401) to rotate, and a dustproof net (504) is fixed inside the hollow tube (501), and the dustproof net (504) is arranged above the motor (502).

3. The sewage expansion container according to claim 2, characterized in that: The heat exchange device (2) comprises a disc (201), the disc (201) being fixed on the top of the inner cavity of the expansion tank (1) and fixedly arranged on the top of the heat conducting plate (3), a spiral tube (202) being fixedly embedded inside the disc (201), one end of the spiral tube (202) being fixedly connected to a liquid inlet tube (203), and the other end of the spiral tube (202) being fixedly connected to a liquid outlet tube (204), one end of the liquid outlet tube (204) and the liquid inlet tube (203) both passing through the disc (201) and the expansion tank (1) in sequence and extending to the outside of the expansion tank (1), the disc (201) being fixed on the bottom of the hollow tube (501), and the disc (201) being movably sleeved on a transmission rod (503), and the transmission rod (503) being arranged on the inside of the spiral tube (202).

4. The sewage expansion container according to claim 1, characterized in that: A sewage inlet pipe (6) is fixedly passed through the outer wall of one side of the expansion tank (1), and the sewage inlet pipe (6) is connected to the interior of the expansion tank (1); an exhaust pipe (7) is fixedly passed through the outer wall of the other side of the expansion tank (1), and the exhaust pipe (7) is connected to the interior of the expansion tank (1); a sewage discharge pipe (8) is fixedly passed through the bottom of the expansion tank (1), and the sewage discharge pipe (8) is connected to the interior of the expansion tank (1).

5. The sewage expansion container according to claim 4, characterized in that: The sewage inlet pipe (6), the exhaust pipe (7) and the sewage discharge pipe (8) are all fixedly provided with electromagnetic valves (9) for controlling the opening and closing of the sewage inlet pipe (6), the exhaust pipe (7) and the sewage discharge pipe (8).

6. The sewage expansion container according to claim 5, characterized in that: A controller (10) for controlling the motor (502) and the electromagnetic valve (9) is fixedly embedded on the front end outer wall of the expansion tank (1).

7. The sewage expansion container according to claim 1, characterized in that: Three supporting legs (11) are fixedly provided at the bottom of the expansion tank (1) to improve the stability of the expansion tank (1).

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