Flash tank

Abstract

The utility model relates to the technical field of flash evaporation, in particular to a flash evaporation tank which comprises a flash evaporation tank body, a base fixedly installed at the lower end of the flash evaporation tank body, an exhaust pipe arranged at the upper end of the flash evaporation tank body, a liquid collecting hopper arranged on the inner side of the flash evaporation tank body, a supporting plate arranged at the lower end of the liquid collecting hopper, and a feeding valve arranged on the left side of the flash evaporation tank body. A driving motor is arranged on the inner side of the base; a scraping plate I is arranged on the inner side of the flash tank body and located at the upper end of the liquid collecting hopper; a scraping plate II is arranged at the upper end of the scraping plate I; and a discharging valve is communicated with the lower end of the right side of the flash tank body. The driving motor drives the rotating shaft to rotate, so that the first scraper and the second scraper are driven to rotate, liquid drops on the inner wall of the flash tank body are scraped and guided, and the gathering efficiency of the liquid drops is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flash evaporation, in particular to a flash evaporation tank. Background Art

[0002] Flash evaporation means that high-pressure saturated water enters a container with a relatively low pressure, and due to the sudden decrease in pressure, part of the saturated water becomes saturated steam and saturated water under the pressure of the container. The flash evaporation tank is an important part of the flash evaporation system and is widely used in the recovery of boiler drainage in thermal power plants, geothermal power generation, and wastewater treatment in chemical plants.

[0003] For example, patent number CN220213958U discloses a flash evaporation tank, which includes a device housing. A steam filtering device is arranged inside the device housing. A flash evaporation chamber is arranged below the steam filtering device, and a storage chamber is arranged below the flash evaporation chamber. The steam filtering device includes a filter screen frame A, a primary filter screen, a filter screen frame B, and a secondary filter screen. An inlet device is arranged inside the flash evaporation chamber, and a diversion plate is arranged below the inlet device. The diversion plate is arranged on a mounting plate. A liquid level gauge is arranged on the left outer wall of the storage chamber, and a discharge pipe is arranged on the right outer wall of the storage chamber. The utility model uses a steam filtering device to perform material gas-liquid separation on the flash steam, so that the flash steam is completely separated from the liquid-phase material, improving the quality of the flash steam. At the same time, multi-nozzle spraying is used for flash evaporation, and the flow rate can be adjusted by a flow regulating valve and adjusted at any time according to the generation situation of the flash steam and the liquid storage situation in the tank, which is convenient to use. During the flash evaporation of the material in the flash evaporation tank of this patent, after the liquid droplets drip on the inner wall of the flash evaporation chamber and the diversion plate, they only rely on their own flow to gather, with low efficiency and easy wall hanging.

[0004] Therefore, aiming at the problem of low aggregation efficiency of liquid droplets during the flash evaporation of materials in the above flash evaporation tank, a flash evaporation tank can be designed to improve the aggregation efficiency of liquid droplets by scraping and guiding the liquid droplets aggregated on the inner wall of the flash evaporation chamber. Content of the Utility Model

[0005] In order to overcome the problem of low aggregation efficiency of liquid droplets during the flash evaporation of materials in the flash evaporation tank.

[0006] The technical solution of the utility model is: a flash evaporation tank, which includes a flash evaporation tank body. A base is fixedly installed at the lower end of the flash evaporation tank body. An exhaust pipe is arranged at the upper end of the flash evaporation tank body. A liquid collecting hopper is arranged inside the flash evaporation tank body. A support plate is arranged at the lower end of the liquid collecting hopper. A feed valve is arranged on the left side of the flash evaporation tank body. A rotating shaft is arranged at the upper end of the support plate. A spraying chamber is arranged outside the rotating shaft. Atomizing nozzles are arranged outside the spraying chamber. A driving motor is arranged inside the base. A first scraper is arranged inside the flash evaporation tank body above the liquid collecting hopper. A second scraper is arranged at the upper end of the first scraper. A discharge valve is connected to the lower end on the right side of the flash evaporation tank body.

[0007] Preferably, the lower end of the exhaust pipe is fixedly connected to the upper end of the flash tank body and is in communication with the inside of the flash tank body. A filter screen is provided inside the exhaust pipe. The upper end of the flash tank body is designed in a funnel-shaped structure to facilitate the filtration of the discharged gas.

[0008] Preferably, the outside of the liquid collecting hopper is fixedly connected to the inside of the flash tank body, the side of the support plate is fixedly connected to the lower end of the liquid collecting hopper, and water permeable holes are evenly formed on the surface of the support plate to facilitate the aggregation of liquid.

[0009] Preferably, the injection chamber is designed in an annular structure and is sleeved on the outside of the rotating shaft. The right side of the lower end of the injection chamber is fixedly connected to the upper end of the support plate through a support rod. The left side of the lower end of the injection chamber is connected to an input pipe, and the lower end of the input pipe extends to the lower end of the support plate and is in communication with the feed valve. The liquid can be input into the injection chamber through the feed valve for injection.

[0010] Preferably, the atomizing nozzles are arranged in an annular array and are in communication with the inside of the injection chamber. The atomizing nozzles are arranged obliquely upward to realize the oblique upward injection of the liquid.

[0011] Preferably, the upper end of the driving motor is fixedly connected to the inside of the base, the output end of the driving motor extends to the inside of the flash tank body and is fixedly connected to the lower end of the rotating shaft to facilitate the control of the rotation of the rotating shaft.

[0012] Preferably, the first scraper is designed in a spiral structure. One end of the second scraper is fixedly connected to the upper end of the first scraper, and the other end is fixedly connected to the upper end of the rotating shaft through a connecting plate. Both the first scraper and the second scraper are adapted to the inside of the flash tank body to facilitate the diversion and collection of the liquid on the inner wall of the flash tank body.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. For this flash tank, the driving motor drives the rotating shaft to rotate, thereby driving the first scraper and the second scraper to rotate, scraping and diverting the liquid droplets on the inner wall of the flash tank body, so that they pass through the liquid collecting hopper, gather through the water permeable holes on the surface of the support plate and are concentrated at the bottom of the flash tank body, improving the aggregation efficiency of the liquid droplets;

[0015] 2. For this flash tank, the liquid is injected into the injection chamber through the input pipe by the feed valve and evenly sprayed obliquely upward from the atomizing nozzles, so that the liquid droplets are dispersed inside the flash tank body, first float upward under the ejected force, and then fall under the action of gravity, making the travel of the liquid droplets longer than that of the vertically downward injection and increasing the residence time of the liquid droplets in the air. Description of the Drawings

[0016] Figure 1 Shown is a three-dimensional structural schematic diagram of the flash tank of the present utility model;

[0017] Figure 2 The figure shows a three-dimensional structural schematic diagram of the feed valve and the injection chamber of the present utility model;

[0018] Figure 3 The figure shows a three-dimensional structural schematic diagram of the first scraper and the second scraper of the present utility model;

[0019] Figure 4 The figure shows a three-dimensional sectional structural schematic diagram of the flash tank of the present utility model.

[0020] Explanation of reference numerals: 1. Flash tank body; 2. Base; 3. Exhaust pipe; 31. Filter screen; 4. Liquid collection hopper; 5. Support plate; 6. Feed valve; 7. Rotating shaft; 8. Injection chamber; 81. Support rod; 82. Input pipe; 9. Atomizing nozzle; 10. Driving motor; 11. First scraper; 12. Second scraper; 13. Discharge valve. Detailed implementation manners

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Please refer to ( Figures 1-4 ), the present utility model provides an embodiment: a flash tank, comprising a flash tank body 1, a base 2 is fixedly installed at the lower end of the flash tank body 1, an exhaust pipe 3 is arranged at the upper end of the flash tank body 1, a liquid collection hopper 4 is arranged inside the flash tank body 1, a support plate 5 is arranged at the lower end of the liquid collection hopper 4, a feed valve 6 is arranged on the left side of the flash tank body 1, a rotating shaft 7 is arranged at the upper end of the support plate 5, an injection chamber 8 is arranged outside the rotating shaft 7, an atomizing nozzle 9 is arranged outside the injection chamber 8, a driving motor 10 is arranged inside the base 2, a first scraper 11 is arranged inside the flash tank body 1 above the liquid collection hopper 4, a second scraper 12 is arranged at the upper end of the first scraper 11, and a discharge valve 13 is connected to the lower end of the right side of the flash tank body 1.

[0023] Please refer to ( Figures 2-4) In this embodiment, the lower end of the exhaust pipe 3 is fixedly connected to the upper end of the flash tank body 1 and is in communication with the inside of the flash tank body 1. A filter screen 31 is arranged inside the exhaust pipe 3. The upper end of the flash tank body 1 is designed in a funnel-shaped structure. The outer side of the liquid collecting hopper 4 is fixedly connected to the inside of the flash tank body 1. The side of the support plate 5 is fixedly connected to the lower end of the liquid collecting hopper 4. Water permeable holes are evenly formed on the surface of the support plate 5. The spraying chamber 8 is designed in an annular structure and is sleeved on the outer side of the rotating shaft 7. The right side of the lower end of the spraying chamber 8 is fixedly connected to the upper end of the support plate 5 through a support rod 81. The left side of the lower end of the spraying chamber 8 is communicated with an input pipe 82. The lower end of the input pipe 82 extends to the lower end of the support plate 5 and is in communication with the feed valve 6. The atomizing nozzles 9 are arranged in an annular array and are in communication with the inside of the spraying chamber 8. The atomizing nozzles 9 are arranged obliquely upward. The liquid is injected into the spraying chamber 8 through the input pipe 82 by the feed valve 6 and is evenly sprayed obliquely upward from the atomizing nozzles 9, so that the liquid droplets are dispersed in the inside of the flash tank body 1, first float upward by the ejected force and then fall by gravity, making the travel of the liquid droplets greater than that of vertical downward spraying, increasing the residence time of the liquid droplets in the air. The gas generated by the flash evaporation of the liquid droplets is discharged after being filtered by the filter screen 31 in the exhaust pipe 3.

[0024] Please refer to ( Figures 3-4 ) In this embodiment, the upper end of the driving motor 10 is fixedly connected to the inside of the base 2. The output end of the driving motor 10 extends to the inside of the flash tank body 1 and is fixedly connected to the lower end of the rotating shaft 7. The first scraper 11 is designed in a spiral structure. One end of the second scraper 12 is fixedly connected to the upper end of the first scraper 11, and the other end is fixedly connected to the upper end of the rotating shaft 7 through a connecting plate. Both the first scraper 11 and the second scraper 12 are adapted to the inside of the flash tank body 1. The liquid droplets after flash evaporation splash and condense on the inner wall of the flash tank body 1. The driving motor 10 drives the rotating shaft 7 to rotate, thereby driving the first scraper 11 and the second scraper 12 to rotate, scraping and guiding the liquid droplets on the inner wall of the flash tank body 1, so that they are concentrated at the bottom of the flash tank body 1 through the aggregation of the liquid collecting hopper 4 and passing through the water permeable holes on the surface of the support plate 5, and can be discharged through the discharge valve 13 subsequently.

[0025] When working, the liquid is injected into the spraying chamber 8 through the input pipe 82 by the feed valve 6 and is evenly sprayed obliquely upward from the atomizing nozzles 9, so that the liquid droplets are dispersed in the inside of the flash tank body 1, first float upward by the ejected force and then fall by gravity, making the travel of the liquid droplets greater than that of vertical downward spraying, increasing the residence time of the liquid droplets in the air. The gas generated by the flash evaporation of the liquid droplets is discharged after being filtered by the filter screen 31 in the exhaust pipe 3. The liquid droplets after flash evaporation splash and condense on the inner wall of the flash tank body 1. The driving motor 10 drives the rotating shaft 7 to rotate, thereby driving the first scraper 11 and the second scraper 12 to rotate, scraping and guiding the liquid droplets on the inner wall of the flash tank body 1, so that they are concentrated at the bottom of the flash tank body 1 through the aggregation of the liquid collecting hopper 4 and passing through the water permeable holes on the surface of the support plate 5, and can be discharged through the discharge valve 13 subsequently.

[0026] Through the above steps, the first scraper 11 and the second scraper 12 are rotated to scrape and divert the droplets on the inner wall of the flash tank body 1, improving the aggregation efficiency of the droplets to solve the problem of low aggregation efficiency of the droplets during the flash evaporation of the material in the flash tank.

Claims

1. A flash tank, comprising a flash tank body (1), characterized in that: A base (2) is fixedly mounted at the lower end of the flash tank body (1); an exhaust pipe (3) is arranged at the upper end of the flash tank body (1); a liquid collecting hopper (4) is arranged inside the flash tank body (1); a support plate (5) is arranged at the lower end of the liquid collecting hopper (4); a feed valve (6) is arranged on the left side of the flash tank body (1); a rotating shaft (7) is arranged at the upper end of the support plate (5); a spray bin (8) is arranged outside the rotating shaft (7); an atomizing nozzle (9) is arranged outside the spray bin (8); a driving motor (10) is arranged on the inner side of the base (2); a scraper plate 1 (11) is arranged on the inner side of the flash tank body (1) at the upper end of the liquid collecting hopper (4); a scraper plate 2 (12) is arranged at the upper end of the scraper plate 1 (11); and a discharge valve (13) is connected to the lower end of the right side of the flash tank body (1).

2. A flash tank according to claim 1, characterized in that: The lower end of the exhaust pipe (3) is fixedly connected to the upper end of the flash tank body (1) and is in communication with the inner side of the flash tank body (1). A filter screen (31) is provided on the inner side of the exhaust pipe (3). The upper end of the flash tank body (1) is designed in a bucket-shaped structure.

3. A flash tank according to claim 1, characterized in that: The outer side of the liquid collecting hopper (4) is fixedly connected to the inner side of the flash tank body (1), the side of the support plate (5) is fixedly connected to the lower end of the liquid collecting hopper (4), and the surface of the support plate (5) is evenly provided with water-permeable holes.

4. A flash tank according to claim 1, characterized in that: The injection bin (8) is designed in an annular structure and is sleeved with the outer side of the rotating shaft (7). The right side of the lower end of the injection bin (8) and the upper end of the support plate (5) are fixedly connected via a support rod (81). The left side of the lower end of the injection bin (8) is connected to an input pipe (82). The lower end of the input pipe (82) extends to the lower end of the support plate (5) and is connected to the feed valve (6).

5. A flash tank according to claim 1, characterized in that: The atomizing nozzles (9) are arranged in a ring array and are connected to the inner side of the spray bin (8). The atomizing nozzles (9) are arranged obliquely upward.

6. A flash tank according to claim 1, characterized in that: The upper end of the driving motor (10) is fixedly connected to the inner side of the base (2), and the output end of the driving motor (10) extends to the inner side of the flash tank body (1) and is fixedly connected to the lower end of the rotating shaft (7).

7. A flash tank according to claim 1, characterized in that: The scraper blade 1 (11) is designed in a spiral structure, one end of the scraper blade 2 (12) is fixedly connected to the upper end of the scraper blade 1 (11), and the other end is fixedly connected to the upper end of the rotating shaft (7) through a connecting plate, and the scraper blade 1 (11) and the scraper blade 2 (12) are both adapted to the inner side of the flash tank body (1).

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