Drainage device of continuous blowdown flash tank

Abstract

The utility model relates to the technical field of blowdown flash tanks, in particular to a continuous blowdown flash tank drainage device which comprises a tank body, a flash chamber arranged on the lower portion in the tank body and a steam-water separator arranged on the upper portion in the tank body, and a filtering assembly is arranged at the right end of the tank body and comprises a drainage pipe communicated with the tank body. The upper end of the drainage pipe communicates with two conveying pipes distributed left and right, the upper ends of the two conveying pipes communicate with separation bins, filter plates are installed in the two separation bins, electric push rods are installed on the opposite faces of the two separation bins, and the output ends of the two electric push rods penetrate through the separation bins and are fixedly connected with brush plates. And the other end of the brush plate is fixedly connected with a cross rod, so that the purposes of removing impurities in sewage in advance, reducing the risk of blocking a water outlet in the flash tank, reducing the possibility that the interior of the flash tank is abraded and corroded, and prolonging the service life are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a continuous blowdown flash tank drainage device belongs to continuous blowdown flash tank technical field. BACKGROUND

[0002] Continuous blowdown flash tank is also called continuous blowdown flash vessel, which is connected with the continuous blowdown port of the boiler. The function of the continuous blowdown flash tank is to expand the boiler blowdown water to evaporate steam and separate the steam from the blowdown water. The separated steam can be recycled to the heat system, and the non-evaporated blowdown water can be sent to the blowdown cooler to heat the softened water. The continuous blowdown flash tank uses the principle of flash evaporation to obtain secondary steam. When the boiler blowdown water is suddenly input into the expansion vessel with a volume several times larger than the pipeline, the pressure decreases and the volume increases, thereby flash evaporating steam.

[0003] The existing continuous blowdown flash tank drainage device does not have a sewage filtration structure, which makes it inconvenient to remove the particulate impurities in the sewage in advance. The impurities may accumulate inside the flash tank, causing wear and corrosion to the inside of the flash tank, reducing the service life of the flash tank. Therefore, there is a need for a continuous blowdown flash tank drainage device. SUMMARY

[0004] The utility model discloses a continuous blowdown flash tank drainage device, which can remove the impurities inside the sewage in advance, reduce the risk of blockage of the drainage port inside the flash tank, and reduce the possibility of wear and corrosion inside the flash tank, thereby improving the service life.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a continuous blowdown flash tank drainage device, comprising a tank body, a flash chamber arranged below the inside of the tank body, and a steam-water separator arranged above the tank body. The right end of the tank body is provided with a filter assembly. The filter assembly comprises a drainage pipe in communication with the tank body. The upper end of the drainage pipe is communicated with two left and right distributed conveying pipes. The upper end of each of the two conveying pipes is communicated with a separation bin. A filter plate is installed in the inside of each of the two separation bins. An electric push rod is installed on the opposite side of each of the two separation bins. The output end of each of the two electric push rods penetrates the separation bin and is fixedly connected with a brush plate. The other end of the brush plate is fixedly connected with a cross bar. The other end of the cross bar is fixedly connected with a cover plate. A clamping groove matched with the cover plate is formed on the opposite side of each of the two separation bins. A rectangular hole is formed on the opposite side of each of the two clamping grooves. A water inlet pipe is in common communication with the two separation bins through a guide pipe at the upper end of each of the two separation bins. A collection bin is arranged above the drainage pipe. A stop valve is installed on the outer wall of the guide pipe.

[0006] In order to seal the connecting part of the cover plate and the clamping groove, the utility model provides a continuous sewage expansion tank drainage device, preferably, a sealing gasket is installed between the cover plate and the clamping groove.

[0007] In order to facilitate the movement of the brush plate in the clamping groove, the utility model provides a continuous sewage expansion tank drainage device, preferably, the lower end of the brush plate is in abutment with the filter plate, and the upper end of the filter plate is flush with the bottom end face inside the clamping groove.

[0008] In order to drive the scraper to rotate, the utility model provides a continuous sewage expansion tank drainage device, preferably, a motor is installed at the bottom end of the tank body, the output end of the motor penetrates the tank body and is fixedly connected with the scraper in abutment with the inner wall of the tank body through a connecting rod.

[0009] In order to facilitate the discharge of the liquid inside the tank body, the utility model provides a continuous sewage expansion tank drainage device, preferably, a drain pipe is communicated with the outer wall of the lower end of the tank body, and a stop valve is installed on the outer wall of the drain pipe.

[0010] In order to facilitate the discharge of the gas separated by the steam-water separator, the utility model provides a continuous sewage expansion tank drainage device, preferably, an exhaust pipe is communicated with the upper end of the tank body.

[0011] Compared with the prior art, the utility model has the beneficial effects as follows:

[0012] The utility model discloses a sewage expansion tank drainage device, which comprises a tank body, a water inlet pipe, a separation bin, a filter plate, a brush plate, a horizontal rod, a cover plate, a clamping groove, an electric push rod, a collecting bin and a sealing gasket. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the overall section structure diagram of the utility model;

[0014] Fig. 2 It is the local structure diagram of the utility model;

[0015] Fig. 3 It is the brush plate and cover plate structure diagram of the utility model.

[0016] As shown in the figure: 1, the tank body; 2, the drainage pipe; 3, the water inlet pipe; 4, the flow guide pipe; 5, the separation bin; 6, the conveying pipe; 7, the collection bin; 8, the electric push rod; 9, the brush plate; 10, the filter plate; 11, the cover plate; 12, the clamping groove; 13, the cross rod; 14, the motor; 15, the flash chamber; 16, the scraper; 17, the drain pipe; 18, the rectangular hole; 19, the steam-water separator. DETAILED DESCRIPTION

[0017] Please refer to Figs. 1 to 3 A continuous sewage expansion tank drainage device, including tank body 1 and set in the tank body 1 below the flash chamber 15 and above the steam-water separator 19, the right end of the tank body 1 is provided with a filter assembly, the filter assembly includes the drainage pipe 2 communicated with the tank body 1, the upper end of the drainage pipe 2 is communicated with two left and right distribution conveying pipes 6, the upper end of the two conveying pipes 6 is communicated with two separation bins 5, the inside of the two separation bins 5 is installed with filter plates 10, the opposite side of the two separation bins 5 is installed with electric push rods 8, the output end of the two electric push rods 8 is penetrated through the separation bin 5 and is fixedly connected with brush plates 9, the other end of the brush plate 9 is fixedly connected with the cross rod 13, the other end of the cross rod 13 is fixedly connected with the cover plate 11, the opposite side of the two clamping grooves 12 is penetrated and is provided with rectangular holes 18, the upper end of the two separation bins 5 is communicated with the water inlet pipe 3 through the flow guide pipe 4, the upper side of the drainage pipe 2 is provided with the collection bin 7, the outer wall of the flow guide pipe 4 is installed with a stop valve.

[0018] In the embodiment: in use, the stop valve of the left end flow guide pipe 4 is opened, sewage is introduced into the corresponding flow guide pipe 4 and the inside of the separation bin 5 through the water inlet pipe 3, the sewage is filtered through the filter plate 10 after entering the inside of the separation bin 5 and then enters the inside of the flash chamber 15 through the corresponding conveying pipe 6, falls into the inside of the tank body 1 after being flashed, when the filter plate 10 is cleaned regularly, the left end stop valve is closed, the right end stop valve is opened, and the continuous sewage operation is carried out, at this time, the left end electric push rod 8 is started to drive the brush plate 9 to move on the outer wall of the filter plate 10, and the impurities on the upper end of the filter plate 10 are moved at the same time, the cross rod 13 drives the cover plate 11 to move and opens the clamping groove 12, the impurities fall into the inside of the collection bin 7 through the clamping groove 12, and the brush plate 9 and the cover plate 11 are reset, and the subsequent use of the filter plate 10 is facilitated.

[0019] As a technical optimization scheme of the utility model, the sealing gasket is installed between the cover plate 11 and the clamping groove 12.

[0020] In the embodiment: the connection between the cover plate 11 and the clamping groove 12 can be sealed through the sealing gasket.

[0021] As a technical optimization scheme of the utility model, the lower end of the brush plate 9 is abutted with the filter plate 10, and the upper end of the filter plate 10 is flush with the bottom end face inside the clamping groove 12.

[0022] In this embodiment: through the upper end of the filter plate 10 and the bottom end of the card slot 12 inside flush, can be convenient to brush plate 9 in the card slot 12 inside movement.

[0023] As a technical optimization scheme of the utility model, the bottom end of the tank body 1 is provided with a motor 14, the output end of the motor 14 penetrates the tank body 1 and is fixedly connected with a scraper 16 abutting against the inner wall of the tank body 1 through a connecting rod.

[0024] In this embodiment: through the motor 14 drive scraper 16 rotation, can prevent the tank body 1 inner wall has dirt residual.

[0025] As a technical optimization scheme of the utility model, the lower end outer wall of the tank body 1 is communicated with a drain pipe 17, and the outer wall of the drain pipe 17 is provided with a stop valve.

[0026] In this embodiment: through the drain pipe 17 can conveniently discharge the liquid inside the tank body 1.

[0027] As a technical optimization scheme of the utility model, the upper end of the tank body 1 is communicated with a exhaust pipe.

[0028] In this embodiment: through the exhaust pipe can conveniently discharge the gas separated after the steam-water separator 19.

[0029] Working principle: when using, first open the stop valve on the outer wall of the left end flow guide pipe 4, guide the sewage into the corresponding flow guide pipe 4 and the separation bin 5 inside through the water inlet pipe 3, after the sewage enters the separation bin 5 inside and is filtered through the filter plate 10, enter the flash chamber 15 inside through the corresponding conveying pipe 6, fall into the bottom end of the tank body 1 after flashing, when cleaning the filter plate 10 regularly, close the left end stop valve, open the right end stop valve, carry out continuous pollution operation, at this time, start the left end electric push rod 8 to drive the brush plate 9 to move on the outer wall of the filter plate 10, at the same time, push the impurities on the upper end of the filter plate 10 to move, at the same time, the cross bar 13 pushes the cover plate 11 to move to open the card slot 12, the impurities fall into the collection bin 7 inside through the card slot 12, and the brush plate 9 and the cover plate 11 are reset, convenient for subsequent use of the filter plate 10, the liquid after flashing is discharged through the drain pipe 17, during the discharging process, start the motor 14 to drive the scraper 16 to rotate, can make the dirt on the inner wall of the tank body 1 fall off and be discharged with the drain pipe 17, the secondary steam after flashing enters the steam-water separator 19 to carry out secondary separation, make the gas-liquid separation more thoroughly, the gas separated after the steam-water separator 19 can be discharged through the exhaust pipe.

[0030] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A continuous blowdown flash tank drain comprising a tank body (1) and a flash chamber (15) disposed below and a vapor-liquid separator (19) disposed above within the tank body (1), characterized by: The right end of the tank body (1) is provided with a filter assembly, the filter assembly comprises a drainage pipe (2) communicated with the tank body (1), the upper end of the drainage pipe (2) is communicated with two left and right distributed conveying pipes (6), the upper end of the two conveying pipes (6) is communicated with two separation bins (5), the inside of the two separation bins (5) is respectively installed with a filter plate (10), the opposite side of the two separation bins (5) is respectively installed with an electric push rod (8), the output end of the two electric push rods (8) penetrates the separation bin (5) and is fixedly connected with a brush plate (9), the other end of the brush plate (9) is fixedly connected with a cross rod (13), the other end of the cross rod (13) is fixedly connected with a cover plate (11), the opposite side of the two separation bins (5) is respectively provided with a clamping groove (12) matched with the cover plate (11), the opposite side of the two clamping grooves (12) is respectively provided with a rectangular hole (18), the upper end of the two separation bins (5) is commonly communicated with a water inlet pipe (3) through a flow guide pipe (4), the upper side of the drainage pipe (2) is provided with a collection bin (7), the outer wall of the flow guide pipe (4) is installed with a stop valve.

2. A continuous blowdown flash tank drain according to claim 1, wherein: The sealing gasket is installed between the cover plate (11) and the clamping groove (12).

3. A continuous blowdown flash tank drain according to claim 1, wherein: The lower end of the brush plate (9) abuts against the filter plate (10), and the upper end of the filter plate (10) is flush with the bottom end face inside the clamping groove (12).

4. A continuous blowdown flash tank drain assembly as defined in claim 1, wherein: The bottom end of the tank body (1) is installed with a motor (14), the output end of the motor (14) penetrates the tank body (1) and is fixedly connected with a scraper (16) abutting against the inner wall of the tank body (1) through a connecting rod.

5. A continuous blowdown flash tank drain assembly as defined in claim 1, wherein: The lower end of the tank body (1) is communicated with a drain pipe (17), and the outer wall of the drain pipe (17) is installed with a stop valve.

6. A continuous blowdown flash tank drain according to claim 1, wherein: The upper end of the tank body (1) is communicated with an exhaust pipe.

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