Water-coal-ash sedimentation tank

Abstract

The utility model discloses a water-coal-ash settling pond which comprises a pond body, a vortex-shaped baffle is arranged in the tank body and divides an inner cavity of the tank body into a vortex-shaped water flowing channel, and the lower side of the vortex-shaped baffle is in contact with the bottom of the tank body; a leading-in opening is formed in the outer wall of the tank body and is used for leading a water body containing water coal ash into the edge position of the inner cavity of the tank body; a center pipe is arranged in the middle of the pool body, the inner end of the vortex-shaped baffle is fixed to the outer wall of the center pipe, a drainage hole used for communicating the pool body with an inner cavity of the center pipe is formed in the side wall of the upper end of the center pipe, and the drainage hole is lower than the guide-in opening. The water body slowly flows from the outer ring to the inner ring of the vortex-shaped water flowing channel, and water-coal ash in the water body can be precipitated downwards in the vortex-shaped water flowing channel in the flowing process, so that the flowing duration of the water body in the pool body is prolonged, and the precipitation efficiency of the water-coal ash is improved.

Description

Technical Field

[0001] The utility model relates to a coal ash sedimentation tank and belongs to the technical field of sedimentation equipment. Background Art

[0002] When coal is burned, it produces a lot of sulfur dioxide and dust (i.e., coal ash), which are discharged into the atmosphere or water along with the flue gas. In order to reduce the waste of water resources and environmental pollution, it becomes crucial to effectively separate coal ash from water. Traditionally, this process is achieved through sedimentation tanks, but this method has some limitations.

[0003] The existing sedimentation tank design is usually a single tank with limited depth. When the water flow containing coal ash enters the sedimentation tank, the sedimentation effect is not ideal because the residence time of the water in the tank is not optimal. In order to increase the sedimentation effect, a common practice is to increase the depth of the sedimentation tank, thereby increasing its net capacity and the residence time of the water in the tank. However, this practice is not only affected by space limitations, but may also lead to increased construction and maintenance costs. In view of this, a water-coal ash sedimentation tank is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a coal ash sedimentation tank to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a coal ash sedimentation tank, comprising:

[0006] Pool body;

[0007] A vortex baffle is arranged inside the pool body and divides the inner cavity of the pool body into a vortex water flow channel, and the lower side of the vortex baffle contacts the bottom of the pool body;

[0008] An inlet is provided on the outer wall of the pool body and is used to introduce water containing coal ash into the edge of the inner cavity of the pool body;

[0009] The central tube is vertically arranged in the middle of the pool body, the inner end of the vortex baffle is fixed on the outer wall of the central tube, and a drainage hole for connecting the pool body with the inner cavity of the central tube is opened on the upper end side wall of the central tube, and the height of the drainage hole is lower than the height of the inlet.

[0010] Preferably, the pool body is also provided with a power assembly, which includes:

[0011] A crossbeam, which is arranged horizontally above the pool body, and both ends of the crossbeam are fixed on the outer wall of the pool body;

[0012] The motor is fixed at the middle of the crossbeam, and the output end of the motor is fixedly connected to the upper end of the central tube through a connector.

[0013] Preferably, the outer end of the vortex baffle contacts the inner wall of the pool body.

[0014] Preferably, a rotating bracket is provided on the top of the pool body, the outer ring of the rotating bracket is rotatably connected to the top contour of the pool body, and the upper side of the vortex baffle and the central tube are both fixed on the rotating bracket.

[0015] Preferably, the bottom of the pool body is in a cone shape.

[0016] Preferably, a collecting bucket is fixed at the bottom center of the pool body, the upper end of the collecting bucket is connected to the pool body, the lower end of the collecting bucket is connected to a suction pipe for sucking out the fly ash in the collecting bucket, and a suction pump is provided on the suction pipe.

[0017] Preferably, a drainage pipe is fixed at the bottom center of the pool body, the upper end of the drainage pipe is connected to the lower end of the central pipe, and the lower end of the drainage pipe passes through the collection barrel and extends to the outside.

[0018] Preferably, there are multiple inlet ports, which are evenly distributed in the circumferential direction on the side walls of the pool body, and a guide ring groove is fixed on the outer wall of the pool body.

[0019] Compared with existing technologies:

[0020] The utility model introduces water into the interior of the pool body through an inlet, and the water body slowly flows from the outer circle of the vortex water flow channel to the inner circle. During the flow, the water-fuel ash in the water body will settle downward in the vortex water flow channel, thereby increasing the flow time of the water body in the pool body and improving the sedimentation efficiency of the water-fuel ash.

[0021] The utility model drives the central tube to rotate through the operation of the motor, and the output end of the motor drives the central tube to rotate. Since the inner end of the vortex baffle is fixed on the central tube, the central tube will rotate with the vortex baffle. At this time, the lower side of the vortex baffle scrapes the bottom of the pool body, and the scraped coal ash is rolled to the middle part of the pool body by the vortex baffle for concentration, which is conducive to the discharge of the coal ash precipitated in the pool body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a cross-sectional view of the pool body and the vortex baffle of the utility model;

[0024] Figure 3 It is an exploded view of the pool body and the vortex baffle of the utility model;

[0025] Figure 4 It is a top view of the pool body and the vortex baffle of the utility model;

[0026] Figure 5It is a cross-sectional view of the pool body and the central tube of the utility model.

[0027] In the figure: 1. pool body, 101. inlet, 2. vortex baffle, 3. center tube, 301. drain hole, 4. power assembly, 401. crossbeam, 402. motor, 5. rotating bracket, 6. collecting bucket, 7. suction pipe, 8. suction pump, 9. drain pipe, 10. guide ring groove. DETAILED DESCRIPTION

[0028] The present invention is described below with specific embodiments, but is not intended to be a limitation of the present invention.

[0029] Embodiment 1

[0030] like Figure 1-Figure 5 As shown, in this embodiment, a coal ash sedimentation tank is provided, including a tank body 1, wherein a vortex baffle 2 is arranged inside the tank body 1, and the vortex baffle 2 divides the inner cavity of the tank body 1 into a vortex water flow channel, and the lower side of the vortex baffle 2 is in contact with the bottom of the tank body 1; an inlet 101 is opened on the outer wall of the tank body 1, which is used to introduce water containing coal ash into the edge position of the inner cavity of the tank body 1; a central tube 3 is arranged in the middle of the tank body 1, and the inner end of the vortex baffle 2 is fixed on the outer wall of the central tube 3, and a drainage hole 301 for connecting the tank body 1 with the inner cavity of the central tube 3 is opened on the upper end side wall of the central tube 3, and the height of the drainage hole 301 is lower than the height of the inlet 101.

[0031] The water containing coal ash is introduced into the interior of the pool body 1 from the inlet 101, and the water flows along the vortex flow channel. Figure 4 The water flows in the direction of the arrow shown, that is, it flows slowly from the outer circle to the inner circle of the vortex water flow channel. During the flow, the water ash in the water body will settle downward in the vortex water flow channel, which increases the flow time of the water body in the pool body 1 and improves the sedimentation efficiency of the water ash. At the same time, the water level in the pool body 1 gradually rises. When the water level rises to the drain hole 301, the upper layer of the settled water in the pool body 1 is introduced into the central pipe 3 from the drain hole 301 and discharged, which is beneficial to the discharge of clean water.

[0032] like Figure 2 , Figure 3 As shown, in order to reduce the fluctuation of the water body in the tank body 1 so as to improve the sedimentation efficiency of the coal ash, there are multiple inlets 101, and the multiple inlets 101 are evenly arranged on the side walls of the tank body 1 in a circumferential direction, and a guide ring groove 10 is fixed on the outer wall of the tank body 1. The water body is guided into the inside of the guide ring groove 10 by an external conduit. At this time, the water body is evenly distributed in the guide ring groove 10, and then the water body in the guide ring groove 10 will be guided from the multiple inlets 101 to the surrounding of the inner cavity of the tank body 1, thereby reducing the fluctuation of the water body in the tank body 1 when the water body is guided into the tank body 1 by the inlet 101, thereby improving the sedimentation efficiency of the coal ash.

[0033] Embodiment 2

[0034] like Figure 1-Figure 5 As shown, on the basis of the first embodiment, in order to discharge the coal ash precipitated at the bottom of the tank body 1, a power assembly 4 is further provided on the tank body 1, and the power assembly 4 includes a crossbeam 401 and a motor 402. The crossbeam 401 is transversely arranged above the tank body 1, and the two ends of the crossbeam 401 are fixed on the outer wall of the tank body 1; the motor 402 is fixed in the middle of the crossbeam 401, and the output end of the motor 402 is fixedly connected to the upper end of the central tube 3 through a connector;

[0035] During the operation of the motor 402, the output end of the motor 402 drives the central tube 3 to rotate. Since the inner end of the vortex baffle 2 is fixed on the central tube 3, the central tube 3 will rotate with the vortex baffle 2. Figure 4 The arrow shown rotates in the opposite direction. At this time, the lower side of the vortex baffle 2 scrapes the bottom of the pool body 1, and the scraped water-fuel ash is rolled to the middle of the pool body 1 by the vortex baffle 2 for concentration;

[0036] In addition, the motor 402 drives the central tube 3 and the vortex baffle 2 to rotate in an intermittent manner, for example, the motor 402 drives the central tube 3 and the vortex baffle 2 to rotate once every six hours, and the duration of each rotation is five minutes. During the rotation of the central tube 3 and the vortex baffle 2, the introduction of water into the pool body 1 from the inlet 101 is stopped;

[0037] like Figure 4 As shown, in order to clean the inner wall of the pool body 1 and scrape off the water-fuel ash attached to the inner wall of the pool body 1, the outer end of the vortex baffle 2 contacts the inner wall of the pool body 1. When the vortex baffle 2 rotates, the outer end of the vortex baffle 2 slides on the inner wall of the pool body 1, which is used to scrape off the water-fuel ash adhered to the inner wall of the pool body 1, thereby further improving the discharge of the water-fuel ash.

[0038] like Figure 1 , Figure 2 As shown, in order to increase the strength of the vortex baffle 2 and prevent the vortex baffle 2 from deforming during rotation, a rotating bracket 5 is provided on the top of the pool body 1, and the outer ring of the rotating bracket 5 is rotatably connected to the top contour of the pool body 1, and the upper side of the vortex baffle 2 and the center tube 3 are both fixed on the rotating bracket 5.

[0039] like Figure 2 and Figure 5 As shown, in order to further improve the efficiency of concentrating the coal-water ash to the middle of the pool body 1, the bottom of the pool body 1 is conical, which is conducive to concentrating the coal-water ash precipitated at the bottom of the pool body 1 to the middle of the pool body 1 along the inclination of the bottom of the pool body 1.

[0040] Embodiment 3

[0041] like Figure 1 , Figure 2 as well as Figure 5 As shown, on the basis of the second embodiment, in order to discharge the coal-water ash concentrated in the middle of the pool body 1, a collecting bucket 6 is fixed at the bottom center of the pool body 1, and the upper end of the collecting bucket 6 is connected to the pool body 1. After the coal-water ash is rolled to the middle position of the pool body 1 by the vortex baffle 2, the coal-water ash will enter the collecting bucket 6 for collection, and the lower end of the collecting bucket 6 is connected to a suction pipe 7 for sucking the coal-water ash in the collecting bucket 6, and a suction pump 8 is arranged on the suction pipe 7. When the suction pump 8 is started, the suction pipe 7 sucks the coal-water ash from the collecting bucket 6. The water-fuel ash in the collecting barrel 6 is sucked out to discharge the water-fuel ash from the pool body 1. The starting operation time of the suction pump 8 is set after the motor 402 is running, that is, after the motor 402 drives the central tube 3 and the vortex baffle 2 to rotate once and stop, the suction pump 8 is started again. The running time can be set to two minutes. When the motor 402 and the suction pump 8 are running, the introduction of water into the pool body 1 from the inlet 101 is stopped. After the motor 402 and the suction pump 8 stop, the inlet 101 starts to introduce water into the pool body 1.

[0042] A drainage pipe 9 is fixed at the bottom center of the pool body 1 , the upper end of the drainage pipe 9 is connected to the lower end of the central pipe 3 , and the lower end of the drainage pipe 9 passes through the collection barrel 6 and extends to the outside.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A coal ash sedimentation tank, characterized in that: include: pool(1); A vortex baffle (2), the vortex baffle (2) being arranged inside the pool body (1) and dividing the inner cavity of the pool body (1) into a vortex water flow channel, the lower side of the vortex baffle (2) being in contact with the bottom of the pool body (1); An inlet (101), the inlet (101) being opened on the outer wall of the pool body (1) and used for introducing water containing coal ash into the edge of the inner cavity of the pool body (1); A central tube (3), the central tube (3) being vertically arranged in the middle of the pool body (1), the inner end of the vortex baffle (2) being fixed on the outer wall of the central tube (3), a drainage hole (301) for connecting the pool body (1) with the inner cavity of the central tube (3) being provided on the upper end side wall of the central tube (3), the height of the drainage hole (301) being lower than the height of the inlet (101).

2. A coal ash sedimentation tank according to claim 1, characterized in that: The pool body (1) is also provided with a power assembly (4), and the power assembly (4) comprises: A crossbeam (401), wherein the crossbeam (401) is disposed transversely above the pool body (1), and both ends of the crossbeam (401) are fixed to the outer wall of the pool body (1); A motor (402) is fixed at the middle of the crossbeam (401), and an output end of the motor (402) is fixedly connected to the upper end of the central tube (3) via a connector.

3. A coal ash sedimentation tank according to claim 2, characterized in that: The outer end of the vortex baffle (2) contacts the inner wall of the pool body (1).

4. A coal ash sedimentation tank according to claim 2, characterized in that: A rotating bracket (5) is provided on the top of the pool body (1), the outer ring of the rotating bracket (5) is rotatably connected to the top contour of the pool body (1), and the upper side of the vortex baffle (2) and the central tube (3) are both fixed on the rotating bracket (5).

5. A coal ash sedimentation tank according to claim 2, characterized in that: The bottom of the pool body (1) is in a cone shape.

6. A coal ash sedimentation tank according to claim 2, characterized in that: A collecting bucket (6) is fixed at the center of the bottom of the pool body (1); the upper end of the collecting bucket (6) is connected to the pool body (1); the lower end of the collecting bucket (6) is connected to a suction pipe (7) for sucking out the coal ash in the collecting bucket (6); and a suction pump (8) is provided on the suction pipe (7).

7. A coal ash sedimentation tank according to claim 6, characterized in that: A drainage pipe (9) is fixed at the center of the bottom of the pool body (1), the upper end of the drainage pipe (9) is connected to the lower end of the center pipe (3), and the lower end of the drainage pipe (9) passes through the collection barrel (6) and extends to the outside.

8. The coal ash sedimentation tank according to claim 1, characterized in that: The number of the inlet ports (101) is multiple, and the multiple inlet ports (101) are evenly distributed in the circumferential direction on the side wall of the pool body (1), and a guide ring groove (10) is fixed on the outer wall of the pool body (1).

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