CN109052611B

CN109052611B - A acid-base charge device of waste water treatment for steam power plant

Info

Publication number: CN109052611B
Application number: CN201811112287.1A
Authority: CN
Inventors: 胡广斌; 王红军; 马威; 解飞飞; 刘哲铭
Original assignee: Thermal Power Plant Of Huadian Hutubi Energy Co ltd
Current assignee: Huadian Hutubi Energy Co.,Ltd.
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2021-06-22
Anticipated expiration: 2038-09-25
Also published as: CN109052611A

Abstract

The invention discloses an acid-base dosing device for wastewater treatment of a thermal power plant, which comprises a first box body, a two-way joint and a return spring, wherein the right side of the first box body is connected with a second box body, the upper ends of the first box body and the second box body are respectively provided with a feeding hole, the upper surfaces of the first box body and the second box body are both penetrated by a fixed shaft, the lower part of the fixed shaft is connected with a rotating shaft, the lower end of the two-way joint is provided with 2 air inlet pipes, the 2 air inlet pipes are respectively penetrated from the upper surfaces of the first box body and the second box body, the outer side of each air inlet pipe is provided with an electromagnetic valve, and the upper end of the two-. This an acid-base charge device of waste water treatment for steam power plant pours into gas into in the box, is convenient for stir the medicine in the box to gas plays the effect of pressure boost, and under the effect of atmospheric pressure, the medicine flows, resumes to the ordinary pressure state in the box until, arranges the material pipe and closes, thereby plays the effect of regularly throwing the material.

Description

A acid-base charge device of waste water treatment for steam power plant

Technical Field

The invention relates to the technical field of thermal power plant equipment, in particular to an acid-base dosing device for wastewater treatment of a thermal power plant.

Background

In the wastewater treatment of a thermal power plant, acid and alkali drugs need to be added into the wastewater to promote the drugs to perform neutralization reaction with the wastewater, so that the corrosivity of the wastewater is reduced. After the medicine is concentrated and placed in the dosing tank, the medicine often takes place to deposit to the medicine can not be even put into the boiler, and when adding the acid-base medicine in the boiler, need manually to open and stop the valve, and along with the inflow of medicine, the staff times, closes the valve once more after a period of time, and maintenance cost is higher, and such operation forgets to close the valve easily, leads to the medicine to flow into too much, influences the reaction in the boiler.

Disclosure of Invention

The invention aims to provide an acid-base dosing device for wastewater treatment of a thermal power plant, which aims to solve the problems that medicines cannot be uniformly put into a boiler due to precipitation of the medicines and a valve needs to be manually started and stopped in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an acid-base charge device of waste water treatment for steam power plant, includes first box, bi-pass joint and reset spring, the right side of first box is connected with the second box, and the feed inlet is all installed to both upper ends, the upper surface of first box and second box all is run through by the fixed axle, and the below of fixed axle is connected with the axis of rotation, stirring vane is installed in the outside of axis of rotation, and the lower extreme of axis of rotation and the center interconnect of bearing the dish, the last fixed surface of bearing the dish has the turbine piece, and the lower extreme of bearing the dish and the basal surface interconnect of first box inner wall, 2 intake pipes are installed to the lower extreme of bi-pass joint, and 2 intake pipes run through from the upper surface of first box and second box respectively, the solenoid valve is installed in the intake pipe outside, and the lower extreme of intake pipe is provided with the nozzle, gas transmission pipeline is installed to the upper end of bi-pass joint, pressure release pipeline is all installed to the below of first box and second box, and pressure release pipeline's below is connected with the solid fixed cylinder, the inside of solid fixed cylinder is provided with the drainage wall, and the surface mounting of solid fixed cylinder has row material pipe, reset spring's lower extreme and the lower surface interconnect of solid fixed cylinder inner wall, and reset spring's upper end is fixed with the piston, the equal embedded measuring cylinder of installing in surface of first box and second box.

Preferably, the first box and the second box are of structures with equal volumes and same shapes, and are arranged in a sealing manner.

Preferably, the fixed shaft and the rotating shaft form a rotating structure, the rotating shaft and the bearing discs are fixedly connected, and the 2 bearing discs respectively form a rotating structure with the first box body and the second box body.

Preferably, the gas transmission pipeline is respectively communicated with 2 gas inlet pipes through a double-way connector.

Preferably, the air inlet pipe is arranged in an inclined structure, 2 nozzles are symmetrically arranged below the air inlet pipe, and the height of the nozzles above the air inlet pipe is the same as that of the turbine blades.

Preferably, the stirring blades are symmetrically provided with 2 groups at the outer side of the rotating shaft, and the rotating shafts are symmetrically arranged in the first box body and the second box body.

Preferably, the drainage wall and the piston form a friction sliding structure, and the vertical height difference between the lower end surface of the drainage wall and the lower end surface of the discharge pipe is greater than the height of the piston.

Compared with the prior art, the invention has the beneficial effects that: this an acid-base charge device of waste water treatment for steam power plant pours into gas into in the box, is convenient for stir the medicine in the box to gas plays the effect of pressure boost, and under the effect of atmospheric pressure, the medicine flows, resumes to the ordinary pressure state in the box until, arranges the material pipe and closes, thereby plays the effect of regularly throwing the material.

1. The first box body and the second box body are arranged, so that the acid solution and the alkaline solution can be conveniently placed in a classified mode, the classified putting is convenient, the internal structures of the acid solution and the alkaline solution are consistent, the operation is convenient, the integral balanced placing is facilitated, the air inlet pipes in the first box body and the second box body are both connected with the two-way joint, and the ventilation conditions in the two box bodies can be respectively controlled by controlling the electromagnetic valves on the two air inlet pipes;

2. the air pipe conveys outside air into the box body, and the air is sent out from the lower part of the liquid, so that the air flow drives the liquid to roll, the medicine is uniformly mixed, meanwhile, the air drives the turbine blades to rotate, so that the rotating shaft drives the stirring blades to rotate, and the liquid is further mixed;

3. when atmospheric pressure in the box increases gradually, atmospheric pressure makes liquid flow in the fixed cylinder to the piston in the fixed cylinder is pushed down by liquid, and liquid is finally discharged from row material pipe, treats gaseous space increase back in the box, and atmospheric pressure in the box resumes to the ordinary pressure, and under reset spring's effect, row material pipe is plugged up again to the piston, avoids liquid to flow out, plays the effect of closing the bin outlet.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of an installation structure of a pressure relief pipeline and a fixed cylinder according to the present invention;

FIG. 4 is a schematic side view of a second case according to the present invention;

FIG. 5 is a schematic view of the external structure of the present invention;

in the figure: 1. a first case; 2. a feed inlet; 3. a fixed shaft; 4. a rotating shaft; 5. a carrier tray; 6. a turbine blade; 7. an air inlet pipe; 8. an electromagnetic valve; 9. a gas pipeline; 10. a two-way joint; 11. a nozzle; 12. a stirring blade; 13. a pressure relief duct; 14. a fixed cylinder; 15. a drainage wall; 16. a discharge pipe; 17. a return spring; 18. a piston; 19. a metering drum; 20. a second case; 21. a stirring blade; .

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an acid-base dosing device for wastewater treatment of a thermal power plant comprises a first box body 1, a feeding hole 2, a fixed shaft 3, a rotating shaft 4, a bearing disc 5, a turbine blade 6, an air inlet pipe 7, an electromagnetic valve 8, an air conveying pipeline 9, a two-way joint 10, a nozzle 11, stirring blades 12, a pressure relief pipeline 13, a fixed cylinder 14, a drainage wall 15, a discharge pipe 16, a reset spring 17, a piston 18, a measuring cylinder 19 and a second box body 20, wherein the right side of the first box body 1 is connected with the second box body 20, the feeding hole 2 is arranged at the upper ends of the first box body and the second box body, the upper surfaces of the first box body 1 and the second box body 20 are penetrated through by the fixed shaft 3, the rotating shaft 4 is connected below the fixed shaft 3, the stirring blades 12 are arranged on the outer side of the rotating shaft 4, the lower end of the rotating shaft 4 is connected with the center of the

bearing disc

5, 2 groups of the stirring blades 12 are symmetrically arranged on the outer side of, the rotating shaft 4 drives the stirring blades 12 to rotate, so that the stirring blades 12 rotate in the first box body 1 and the second box body 20 to stir the liquid in the box bodies;

the upper surface of the bearing disc 5 is fixed with a turbine blade 6, the lower end of the bearing disc 5 is mutually connected with the bottom surface of the inner wall of the first box body 1, the fixed shaft 3 and the rotating shaft 4 form a rotating structure, the rotating shaft 4 is fixedly connected with the

bearing disc

5, and 2 bearing discs 5 respectively form a rotating structure with the first box body 1 and the second box body 20, so that when the bearing disc 5 is driven by the turbine blade 6 to rotate, the bearing disc 5 rotates in the box body, the bearing disc 5 drives the stirring blades 12 to rotate through the rotating shaft 4, and the stirring blades 12 mix and stir the liquid in the box body, so that the medicines are fully mixed;

2 air inlet pipes 7 are installed at the lower end of the double-way connector 10, the 2 air inlet pipes 7 penetrate through the upper surfaces of the first box body 1 and the second box body 20 respectively, the air inlet pipes 7 are arranged to be of an inclined structure, 2 nozzles 11 are symmetrically arranged below the air inlet pipes 7, and the heights of the nozzles 11 above the air inlet pipes are the same as those of the turbine blades 6, so that air is sprayed out in an inclined direction, the height of the air which is blown up at an initial speed is increased, and the rolling speed of liquid is increased;

an electromagnetic valve 8 is installed on the outer side of the air inlet pipe 7, a nozzle 11 is arranged at the lower end of the air inlet pipe 7, a gas transmission pipeline 9 is installed at the upper end of the two-way connector 10, and the gas transmission pipeline 9 is respectively communicated with the 2 air inlet pipes 7 through the two-way connector 10, so that gas in the gas transmission pipeline 9 respectively enters the 2 air inlet pipes 7, and air is respectively injected into the two box bodies;

pressure relief pipeline 13 is all installed to the below of first box 1 and second box 20, and pressure relief pipeline 13's below is connected with solid fixed cylinder 14, the inside of solid fixed cylinder 14 is provided with drainage wall 15, and solid fixed cylinder 14's surface mounting has row material pipe 16, return spring 17's lower extreme and the lower surface interconnect of solid fixed cylinder 14 inner wall, and return spring 17's upper end is fixed with piston 18, drainage wall 15 constitutes friction sliding structure with piston 18, and the vertical altitude difference of terminal surface is greater than piston 18 under terminal surface and row material pipe 16 under drainage wall 15, piston 18 seals in drainage wall 15, and piston 18 can move to row material pipe 16's lower extreme

The surface of first box 1 and second box 20 all embeds installs a measuring section of thick bamboo 19, and first box 1 and second box 20 are the same, the same structure of shape of volume equals, and both are sealed setting each other to be convenient for store alkaline medicine and acid medicine respectively in two boxes, two boxes set up together simultaneously, convenient management.

The working principle is as follows: when the acid-base dosing device for wastewater treatment of the thermal power plant is used, as shown in fig. 1 and 5, firstly, a gas transmission pipeline 9 and an external air pump are installed and fixed, an acid solution is injected into the first box body 1 through a feed port 2, the liquid level inside the first box body is observed through a metering cylinder 19, the solution is stopped being injected until the liquid level is positioned at the maximum scale of the metering cylinder 19, an alkaline solution is injected into the second box body 20 through a feed port 2 of the second box body until the liquid level is flush with the liquid level of the first box body 1, and then the feed ports 2 on the first box body 1 and the second box body 20 are closed;

when acid medicine needs to be added into the boiler, as shown in fig. 1, fig. 2 and fig. 4, the electromagnetic valve 8 of the air inlet pipe 7 in the first box 1 is opened, so that the air inlet pipe 7 in the first box 1 is in an open state, so that the gas is input from the gas transmission pipeline 9, the air enters the air inlet pipe 7 in the first box 1 through the two-way joint 10, then the air is sprayed to the turbine blade 6 in the first box 1, the turbine blade 6 rotates in the liquid, so that the turbine blade 6 simultaneously drives the bearing disc 5 and the rotating shaft 4 to rotate, the rotating shaft 4 drives the stirring blade 12 to rotate, the stirring blade 12 and the turbine blade 6 both stir and mix the acid liquid, and the gas floats from the lower part of the liquid, finally the gas is collected above the liquid, the gas sprayed from the air inlet pipe 7 gradually increases in the first box 1, and the air pressure in the first box 1 gradually increases, the liquid in the first box body 1 enters the fixed cylinder 14 through the connected pressure relief pipeline 13, as shown in fig. 3, the liquid causes the piston 18 to move downwards in the drainage wall 15, and the piston 18 compresses the return spring 17 until the height of the piston 18 is lower than that of the discharge pipe 16, the acidic liquid in the first box body 1 flows out from the discharge pipe 16, after the acidic liquid is discharged for a period of time, the volume of the liquid in the first box body 1 is gradually reduced, the volume of the gas is gradually increased until the pressure in the first box body 1 returns to the normal pressure, the pressure under the piston 18 disappears, the return spring 17 returns to the original shape, the piston 18 is driven to continue to move upwards until the piston 18 blocks the discharge pipe 16, and the first box body 1 is sealed again;

when alkaline medicine is added to the boiler, firstly, the electromagnetic valve 8 on the air inlet pipe 7 in the first box body 1 is closed, the air inlet pipe 7 in the first box body 1 is in a sealing state, then the electromagnetic valve 8 on the air inlet pipe 7 in the second box body 20 is opened, the air inlet pipe 7 in the second box body 20 is in an opening state, so that gas enters the second box body 20, the gas drives the turbine blade 6 in the second box body 20 to rotate, as in the same manner, the piston 18 in the fixed cylinder 14 below the second box body 20 is also extruded by liquid, so that the liquid is discharged from the discharge pipe 16, and the timed outflow of the liquid is realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an acid-base charge device of waste water treatment for steam power plant, includes first box (1), bi-pass joint (10) and reset spring (17), its characterized in that: the right side of first box (1) is connected with second box (20), and feed inlet (2) are all installed to the upper ends of both, the upper surface of first box (1) and second box (20) is all run through by fixed axle (3), and the below of fixed axle (3) is connected with axis of rotation (4), stirring vane (12) are installed in the outside of axis of rotation (4), and the lower extreme of axis of rotation (4) and the center interconnect of bearing dish (5), the last fixed surface of bearing dish (5) has turbine piece (6), and the lower extreme of bearing dish (5) and the basal surface interconnect of first box (1) inner wall, 2 intake pipe (7) are installed to the lower extreme of bi-pass joint (10), and 2 intake pipe (7) run through from the upper surface of first box (1) and second box (20) respectively, and solenoid valve (8) are installed in the intake pipe (7) outside, and the lower extreme of intake pipe (7) is provided with nozzle (11), gas transmission pipeline (9) are installed to the upper end that the bi-pass connects (10), pressure release pipeline (13) are all installed to the below of first box (1) and second box (20), and the below of pressure release pipeline (13) is connected with solid fixed cylinder (14), the inside of solid fixed cylinder (14) is provided with drainage wall (15), and the surface mounting of solid fixed cylinder (14) has row material pipe (16), the lower extreme of reset spring (17) and the lower surface interconnect of solid fixed cylinder (14) inner wall, and the upper end of reset spring (17) is fixed with piston (18), the equal embedded measuring cylinder (19) of installing in surface of first box (1) and second box (20), first box (1) and second box (20) are the volume equal, the structure that the shape is the same, and both are sealed setting each other, fixed axle (3) constitute revolution mechanic with axis of rotation (4), and axis of rotation (4) and bear set (5) fixed connection to 2 bear set (5) and constitute revolution mechanic with first box (1) and second box (20) respectively, gas transmission pipeline (9) connect (10) through the bi-pass respectively with 2 intake pipe (7) through-connected, intake pipe (7) set up to slope column structure, and nozzle (11) are provided with 2 in the below symmetry of intake pipe (7) to nozzle (11) that are located the top are the same with turbine piece (6) height, stirring vane (12) are provided with 2 groups in the outside symmetry of axis of rotation (4), and axis of rotation (4) are the symmetry setting in first box (1) and second box (20), drainage wall (15) and piston (18) constitute friction sliding structure, and drainage wall (15) down the perpendicular difference in height of terminal surface and row material pipe (16) terminal surface be greater than the piston (18) under terminal surface vertical difference in height Height.