CN109432959B - Counter-flow type multistage spraying device - Google Patents
Counter-flow type multistage spraying device Download PDFInfo
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- CN109432959B CN109432959B CN201811464144.7A CN201811464144A CN109432959B CN 109432959 B CN109432959 B CN 109432959B CN 201811464144 A CN201811464144 A CN 201811464144A CN 109432959 B CN109432959 B CN 109432959B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
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Abstract
The invention discloses a counter-flow multistage spraying device, wherein at least N purification devices which are sequentially arranged up and down are arranged in a spraying tower, each purification device comprises a spraying assembly, a packing layer and a liquid collecting tank for collecting absorption liquid are sequentially fixed below each spraying assembly, a vent pipe waste gas inlet for passing lower gas is formed in each liquid collecting tank, the upper port of each vent pipe is higher than the bottom of each liquid collecting tank, and the bottom of each liquid collecting tank is respectively connected with a liquid storage tank through a liquid discharge pipe; the number of the liquid storage boxes is n, each stage of liquid storage box is provided with a liquid inlet and a liquid outlet, the liquid inlets of the adjacent two layers of liquid storage boxes are respectively communicated with liquid discharge pipes at the bottoms of the liquid collecting grooves of the adjacent two layers of purifying equipment, and the liquid outlets of the adjacent two layers of liquid storage boxes are respectively communicated with the spraying assemblies of the adjacent two layers of purifying equipment. The spraying device can obviously improve the waste gas purification efficiency on the premise of reducing the cost; in addition, the spraying device adopts a modular design and can be automatically equipped according to requirements.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment equipment, and particularly relates to a counter-flow type multistage spraying device.
Background
At present, a spray tower is generally adopted for purifying waste gas. The existing spray tower has some defects: the absorption liquid of the same liquid storage tank is adopted for multi-stage spraying of the same spray tower, and after the multi-stage spraying of the same spray tower works for a period of time, the content of solute in the absorption liquid is increased, so that the absorption rate of waste gas is low, and the preset treatment effect cannot be achieved; in addition, if the absorption liquid containing a medium amount of solute needs to be discharged in order to ensure high absorption efficiency, and then new absorption liquid is added, which causes waste of the absorption liquid and increases the treatment cost of the subsequent absorption liquid.
Therefore, it is necessary to design a counter-flow type multi-stage spraying device to ensure the improvement of the exhaust gas purification efficiency while reducing the cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a counter-flow type multi-stage spraying device to ensure that the waste gas purification efficiency is improved on the premise of reducing the cost; in addition, the spraying device adopts a modular design and can be automatically equipped according to requirements.
In order to achieve the purpose, the invention adopts the technical scheme that: a counter-flow type multistage spraying device comprises a spraying tower, wherein at least N purifying devices which are sequentially arranged up and down are arranged in the spraying tower, N is more than or equal to 2, a second-stage purifying device is arranged below a first-stage purifying device, an Nth-stage purifying device is arranged at the lowest part, the first-stage purifying device is arranged at the highest part, the purifying devices comprise spraying components, a packing layer and a liquid collecting tank for collecting absorption liquid are sequentially fixed below the spraying components, a vent pipe waste gas inlet for passing lower gas is formed in the liquid collecting tank, the upper port of each vent pipe is higher than the bottom of the liquid collecting tank, and the bottom of each liquid collecting tank is respectively connected with a liquid storage box through a liquid discharge pipe;
the number of the liquid storage tanks is n, n is more than or equal to 2, the n liquid storage tanks are sequentially overlapped from top to bottom, the second liquid storage tank is positioned below the first liquid storage tank, the nth liquid storage tank is positioned at the bottom, a water replenishing port is arranged on the first liquid storage tank, a water discharging port is arranged on the nth liquid storage tank, and the water replenishing port is communicated with each stage of liquid storage tank through a water replenishing ball float valve; the upper layer of liquid storage tank and the lower layer of liquid storage tank are communicated through a siphon pipe, a water inlet is arranged on the upper end siphon pipe in the upper layer of liquid storage tank, a water outlet is arranged on the lower end siphon pipe wall in the lower layer of liquid storage tank, siphon float valves are arranged in other liquid storage tanks except the nth stage of liquid storage tank, the siphon float valves control the opening and closing of the water outlet on the lower end siphon pipe wall, when the water level is lowered to the lowest set position, the siphon float valves control the opening of the water outlet, and when the water level is raised to the highest set position, the siphon float valves control the closing of the water outlet;
each stage of liquid storage box is provided with a liquid inlet and a liquid outlet, the liquid inlets on two adjacent layers of liquid storage boxes are respectively communicated with a liquid discharge pipe at the bottom of a liquid collecting tank on two adjacent layers of purification equipment, and the liquid outlets on two adjacent layers of liquid storage boxes are respectively communicated with spraying assemblies on two adjacent layers of purification equipment; the liquid discharging end of the liquid storage box positioned on the upper layer is connected with the spraying component positioned on the upper layer purifying equipment through a liquid inlet pipe, a valve and a liquid inlet pump, and the liquid discharging end of the liquid storage box positioned on the lower layer is connected with the spraying component positioned on the lower layer purifying equipment through a liquid inlet pipe, a valve and a liquid inlet pump.
After entering a spray tower, the waste gas is purified by multi-stage purification equipment and then is discharged from the top; each level of purification equipment adopts a module design, and modules of the purification equipment can be added or reduced so as to achieve different purification effects; and the waste gas in the lower layer enters the purifying equipment from the vent pipe for purification treatment.
The absorption liquid which absorbs the waste gas is stored in the liquid collecting tank, and the absorption liquid in the liquid collecting tank flows into the liquid storage tank through the liquid discharge pipe; the absorption liquid in the liquid storage tank flows into the spraying assembly through the liquid inlet pump and the liquid inlet pipe. When the situation that the top discharged gas does not reach the standard or the preset time is reached is monitored, a drain valve of a bottom liquid storage tank (nth-stage liquid storage tank) is opened to discharge saturated absorption liquid; the drainage process of the liquid storage tank specifically comprises the following steps: when the top discharge gas is detected to be not up to standard or the preset time is reached, a drain valve of the nth-stage liquid storage tank is opened to drain saturated absorption liquid, when the water level is lowered to a lowest set position (which can be a position where the absorption liquid is drained completely), a siphon floating ball valve controls a water outlet on a siphon pipe in the nth-stage liquid storage tank to be opened, water in the nth-1-stage liquid storage tank flows out from the water outlet in the nth-stage liquid storage tank through the siphon pipe, the water level in the nth-stage liquid storage tank rises, the water level in the nth-1-stage liquid storage tank falls at the same time, and when the water level in the nth-stage liquid storage tank rises to a highest set position, the floating ball valve controls the water outlet to be closed, the water in the nth-1-stage liquid storage tank stops flowing in, and the displacement of the water from the nth-1-stage liquid storage tank to the nth-stage liquid storage tank is completed. Similarly, when the water level in the liquid storage tank of the (n-1) th level is lowered to the lowest set position, the displacement from the liquid storage tank of the (n-2) th level to the liquid storage tank of the (n-1) th level is realized by water through a siphon pipe and a siphon ball float valve, and when the water level in the liquid storage tank of the first level is lower than the set position, a water supplementing ball float valve is opened to supplement new absorption liquid for the liquid storage tank of the first level, so that the displacement progressive water change of the whole liquid storage tank is realized. The automatic replacement of water between the liquid storage tanks is realized by adopting universal accessories such as the ball float valve and the siphon, the automatic replacement is simple and practical, and compared with an electric valve, a pneumatic valve, a water pump and the like which have high failure rate and short service life when corrosive liquid is treated, the automatic replacement has lower failure rate.
Therefore, the absorption liquid with high solute content is used for treating the waste gas with higher concentration, the absorption liquid with low solute content is used for treating the waste gas with lower concentration, the discharged waste gas is ensured to be better purified, and the waste of the absorption liquid and the subsequent treatment cost can be avoided by discharging the absorption liquid with high solute content.
The specific number of stages of the liquid storage tank and the purification device can be set according to specific conditions according to factors such as the concentration of the exhaust gas and the treatment efficiency of the spray liquid.
As an improvement of the technical scheme, the top of the liquid collecting tank is provided with an opening, the side wall of the liquid collecting tank is tightly attached to the inner wall of the spray tower, and a water retaining cap is arranged above the upper port of the vent pipe and used for preventing liquid from flowing into the vent pipe. Each level of purification equipment is provided with a packing layer, a water retaining cap, a liquid collecting tank and a vent pipe, so that the independence of each level of purification equipment is ensured.
As an improvement of the technical scheme, three first-stage purification equipment, second-stage purification equipment and third-stage purification equipment which are sequentially arranged from top to bottom are arranged in the spray tower, the first-stage purification equipment comprises a first-stage liquid collecting tank, the bottom of the first-stage liquid collecting tank is connected with a first-stage liquid storage tank through a liquid discharge pipe, and the liquid discharge end of the first-stage liquid storage tank is connected with a spray assembly of the first-stage purification equipment through a liquid inlet pipe; the second-stage purification equipment comprises a second-stage liquid collecting tank, the bottom of the second-stage liquid collecting tank is connected with a second-stage liquid storage box through a liquid discharge pipe, and the liquid discharge end of the second-stage liquid storage box is connected with a spraying assembly of the second-stage purification equipment through a liquid inlet pipe; the third-stage purifying equipment comprises a third-stage liquid collecting tank, the bottom of the third-stage liquid collecting tank is connected with a third-stage liquid storage tank through a liquid discharge pipe, and the liquid discharge end of the third-stage liquid storage tank is connected with the spraying assembly of the third-stage purifying equipment through a liquid inlet pipe.
As a further improvement of the technical scheme, a packing layer is arranged between the purification equipment at the top and the exhaust port of the spray tower, and the spray tower is provided with an observation port corresponding to each purification equipment.
As a further improvement of the above technical solution, in the same purification apparatus, an upper port of the vent pipe is higher than a sidewall of the liquid collection tank, and a lower port of the vent pipe is fixedly connected with a bottom of the liquid collection tank.
As a further improvement of the technical scheme, the siphon float valve is sleeved on the lower end siphon pipe, the siphon float valve can move up and down along the lower end siphon pipe relatively, the water outlet is formed in the pipe wall of the lower end siphon pipe, and the relative movement of the siphon float valve and the siphon pipe is used for controlling the opening and closing of the water outlet.
As a further improvement of the above technical solution, the siphon float valve is connected to the control float through a float connecting rod, the other end of the control float is fixedly disposed on the top wall, a vertical chute is disposed on the siphon float valve, the float connecting rod can move up and down relatively along the chute, the siphon float valve can descend along with the descending of the water level, the control float controls the siphon float valve not to move relative to the siphon through the float connecting rod before the water level rises to the highest setting position, and when the water level rises to the highest setting position, the control float drives the siphon float valve to move upward through the float connecting rod to control the closing of the water outlet.
When the water level descends, the siphon ball float valve descends along with the descending of the water level along the siphon pipe at the lower end, the floating ball connecting rod moves downwards along the vertical sliding groove, when the water level descends to the lowest set position, the siphon ball float valve controls the water outlet on the siphon pipe at the lower end to be opened, the water level ascends, and before the water level ascends to the highest set position, the control floating ball controls the siphon ball float valve not to move relative to the siphon pipe through the floating ball connecting rod, so that the water outlet is in an open state before the water level ascends to the highest set position, and when the water level ascends to the highest set position, the control floating ball drives the siphon ball float valve to move upwards through the floating ball connecting rod to control the water outlet to be closed.
As a further improvement of the technical scheme, a floating part is fixedly arranged at the bottom of the siphon float valve. The floating piece has the function of making the siphon ball float valve have certain buoyancy and descend along with the descending of the water level.
The invention has the beneficial effects that: the invention provides a counter-flow multistage spraying device, which has the following advantages:
1) the purification equipment in the spray tower adopts a modular design, so that the production of the multistage spray tower is easily realized;
2) the treatment effect of a plurality of spray towers can be achieved by using one modular multistage spray tower, and the floor area and connecting fittings of equipment are greatly reduced;
3) the spray tower adopts multistage clarification plant, holds the liquid case and adopts three-dimensional stacking, guarantees like this that waste gas from up the purifying process down, handles the waste gas of higher concentration with the absorption liquid of high solute content, handles the waste gas of lower concentration with the absorption liquid of low solute content, ensures that exhaust waste gas obtains purification treatment better, and the waste and subsequent treatment cost of absorption liquid can be avoided in the discharge of the absorption liquid of high solute content.
Drawings
FIG. 1 is a schematic structural view of a spraying device according to the present invention;
FIG. 2 is an enlarged isometric view of the sump;
FIG. 3 is a schematic view of the structure of the liquid storage tank;
in FIGS. 1 to 3, 1, an absorption column; 2. a first stage of purification equipment; 21. a second stage of purification equipment; 22. a third stage of purification equipment; 3. a liquid storage tank; 301. a first-stage liquid storage tank; 302. a second-stage liquid storage tank; 303. a third-stage liquid storage tank; 304. a water replenishing valve; 305. a drain valve; 306. a water replenishing ball float valve; 307. a siphon tube; 308. a siphon float valve; 3071. a water outlet; 3081. controlling the floating ball; 3082. a float member; 309. a first liquid inlet; 3010. a first drain port; 3011 a second liquid inlet; 3012. a second liquid discharge port; 3013. a third liquid inlet; 3014. a third liquid discharge port; 4. a first drain pipe; 41. a second drain pipe; 42. a third drain pipe; 5. a first liquid inlet pump; 51. a second liquid inlet pump; 52. a third liquid feed pump; 6. a first liquid inlet pipe; 61. a second liquid inlet pipe; 62. a third liquid inlet pipe; 7. a first stage sump; 71. a second stage sump; 72. a third stage liquid collecting tank; 8. a gas permeable pipe; 81. a water retaining cap.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the following detailed description and accompanying drawings.
Example 1
An embodiment of the spray device disclosed by the invention is shown in figures 1-3 and comprises a spray tower 1, wherein three first-stage purification devices 2, second-stage purification devices 21 and third-stage purification devices 22 which are sequentially arranged up and down are arranged in the spray tower 1, each purification device comprises a spray component, a packing layer and a liquid collecting tank for collecting absorption liquid are sequentially fixed below the spray component, the top of the liquid collecting tank is provided with an opening, the side wall of the liquid collecting tank is tightly attached to the inner wall of the spray tower 1, a vent pipe 10 which is used for allowing waste gas below to pass through and is vertically arranged is arranged in the liquid collecting tank, a water retaining cap 101 is arranged above the upper port of the vent pipe 10, the water retaining cap 101 prevents liquid from flowing into the vent pipe 10, and the bottom of each liquid collecting tank is connected with a liquid storage tank 3 through a liquid discharge pipe;
the structural schematic diagram of the liquid storage tank 3 is shown in fig. 3, the liquid storage tank 3 is a three-stage liquid storage tank, the three-stage liquid storage tanks are sequentially stacked from bottom to top, a first-stage liquid storage tank 301 is positioned at the top, a second-stage liquid storage tank 302 is positioned below the first-stage liquid storage tank 301, a third-stage liquid storage tank 303 is positioned at the bottom, a water replenishing port is arranged on the first-stage liquid storage tank 301, a water replenishing valve 304 is arranged on the water replenishing port, a water discharging port is arranged on the third-stage liquid storage tank 303, a water discharging valve 305 is arranged on the water discharging port, and the water replenishing port is communicated with each stage liquid storage tank through a water replenishing ball float valve 306; the upper and lower adjacent two layers of liquid storage tanks are communicated through a siphon pipe 307, the siphon pipe 307 in the upper liquid storage tank is called an upper end siphon pipe, the siphon pipe in the lower liquid storage tank is called a lower end siphon pipe, the upper end siphon pipe in the upper liquid storage tank is provided with a water inlet, the lower end siphon pipe wall in the lower liquid storage tank is provided with a water outlet 3071, the other liquid storage tanks except the third liquid storage tank are provided with siphon float valves 308, the siphon float valves 308 control the opening and closing of the water outlet 3071 on the siphon pipe wall of the lower end siphon pipe, when the water level falls to the lowest set position, the siphon float valves 308 control the water outlet 3071 to be opened, and when the water level rises to the highest set position, the siphon float valves 308 control the water outlet 3071 to be closed.
The siphon float valve 308 is sleeved on the lower end siphon pipe, the siphon float valve 308 can move up and down along the lower end siphon pipe relatively, and the relative movement of the siphon float valve 308 and the lower end siphon pipe is used for controlling the opening and closing of the water outlet 3071.
The siphon float valve 308 is connected with the control float 3081 through a float connecting rod (not shown in the figure), the other end of the control float 3081 is fixedly arranged on the top wall, a vertical chute (not shown in the figure) is arranged on the siphon float valve 308, the float connecting rod can move up and down along the chute relatively, in the water level descending process, the siphon float valve 308 can descend along with the descending of the water level, in the water level ascending process, before the water level ascends to the highest set position, the control float 3081 controls the siphon float valve 308 not to move relative to a siphon at the lower end through the float connecting rod, and when the water level ascends to the highest set position, the control float 3081 drives the siphon float valve 308 to move upwards through the float connecting rod to control the water outlet 3071 to be closed. A floating member 3082 is fixedly arranged at the bottom of the siphon ball valve 308, and the floating member 3082 can make the siphon ball valve 308 have certain buoyancy and descend along with the descending of the water level.
The first-stage purifying equipment 2 comprises a first-stage liquid collecting tank 7, the bottom of the first-stage liquid collecting tank 7 is communicated with a first liquid inlet 309 of a first-stage liquid storage tank 301 through a first liquid discharge pipe 4, and a first liquid discharge port 3010 of the first-stage liquid storage tank 301 is connected with a spraying assembly of the first-stage purifying equipment 2 through a first liquid inlet pipe 6 and a first liquid inlet pump 5; the second-stage purification equipment 21 comprises a second-stage liquid collecting tank 71, the bottom of the second-stage liquid collecting tank 71 is communicated with a second liquid inlet 3011 of the second-stage liquid storage tank 302 through a second liquid discharge pipe 41, and a second liquid discharge port 3012 of the second-stage liquid storage tank 302 is connected with a spraying assembly of the second-stage purification equipment 21 through a second liquid inlet pipe 61 and a second liquid inlet pump 51; the third-stage purification device 22 comprises a third-stage liquid collecting tank 72, the bottom of the third-stage liquid collecting tank 72 is communicated with a third liquid inlet 3013 of the third-stage liquid storage tank 303 through a third liquid discharge pipe 42, and a third liquid discharge port 3014 of the third-stage liquid storage tank 303 is connected with the spray assembly of the third-stage purification device 22 through a third liquid inlet pipe 62 and a third liquid inlet pump 52.
A packing layer is arranged between the first-stage purifying equipment 2 and the exhaust port of the spray tower 1, and an observation port is arranged at the position of the spray tower 1 corresponding to each purifying equipment; in the first-stage purification equipment 2, the upper port of the vent pipe 8 is higher than the bottom of the first-stage liquid collecting tank 7, and the lower port of the vent pipe 8 is fixedly connected with the bottom of the first-stage liquid collecting tank 7; in the second-stage purification equipment 21, the upper port of the vent pipe 8 is higher than the bottom of the second-stage liquid collecting tank 71, and the lower port of the vent pipe 8 is fixedly connected with the bottom of the second-stage liquid collecting tank 71; in the third-stage purification device 22, the upper port of the vent pipe 8 is higher than the bottom of the third-stage liquid collecting tank 72, and the lower port of the vent pipe 8 is fixedly connected with the bottom of the third-stage liquid collecting tank 72.
After entering the spray tower 1, the waste gas is purified by multi-stage purification equipment and then discharged from the top; each level of purification equipment adopts a module design, and modules of the purification equipment can be added or reduced so as to achieve different purification effects; each stage of purification equipment is provided with a packing layer, a water retaining cap 81, a liquid collecting tank and a vent pipe 8, so that the independence of each stage of purification equipment is ensured; the waste gas below enters the purifying device from the vent pipe 8 for purifying treatment. The absorption liquid which has absorbed the waste gas is stored in the liquid collecting tank, and the absorption liquid in the liquid collecting tank flows into the liquid storage tank 3 through the liquid discharge pipe; the absorption liquid in the liquid storage tank 3 flows into the spraying assembly through the liquid inlet pump and the liquid inlet pipe. When the top discharge gas is detected to be not up to the standard or the preset time is reached, the saturated absorption liquid is discharged through a drain valve 305; the drainage process of the liquid storage tank specifically comprises the following steps: when the top discharge gas is detected to be not up to the standard or the preset time is reached, a drain valve 305 on a drain port of the third-stage liquid storage tank 303 is opened, the water level is lowered, a siphon ball float valve 308 descends along a lower-end siphon pipe along with the lowering of the water level, a float rod moves downwards along a vertical chute, when the water level is lowered to a lowest set position, the siphon ball float valve 308 controls a water outlet 3071 on the lower-end siphon pipe to be opened, water in the second-stage liquid storage tank 302 flows out from the water outlet in the third-stage liquid storage tank 303 through a siphon pipe, the water level in the third-stage liquid storage tank 303 rises, meanwhile, the water level in the second-stage liquid storage tank 302 descends, the water level in the third-stage liquid storage tank 303 rises to the highest set position, a float ball 3081 is controlled to control the siphon ball float valve 308 not to move relative to the siphon pipe 307, and therefore, the water outlet 3071 is ensured to be in an open state before the water level rises to the highest set position, when the water level rises to the highest set position, the control float 3081 drives the siphon float valve 308 to move upwards through the float rod to control the water outlet 3071 to be closed, the water in the second-stage liquid storage tank 302 stops flowing in, and the displacement of the water from the second-stage liquid storage tank 302 to the third-stage liquid storage tank 303 is completed. Similarly, when the water level in the second-stage liquid storage tank 302 drops to the lowest set position, the water realizes the displacement from the first-stage liquid storage tank 301 to the second-stage liquid storage tank 302 through a siphon pipe and a siphon ball float valve, and when the water level in the first-stage liquid storage tank 301 is lower than the set position, the water replenishing ball float valve 306 is triggered to open the water replenishing to the first-stage liquid storage tank 301, so that the displacement progressive water exchange of the whole liquid storage tank is realized. Therefore, the absorption liquid with high solute content is used for treating the waste gas with higher concentration, the absorption liquid with low solute content is used for treating the waste gas with lower concentration, the discharged waste gas is ensured to be better purified, and the waste of the absorption liquid and the subsequent treatment cost can be avoided by discharging the absorption liquid with high solute content.
Finally, it should be noted that the above embodiments are intended to illustrate the technical solutions of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A counter-flow type multistage spraying device is characterized by comprising a spraying tower, wherein at least N purifying devices which are sequentially arranged up and down are arranged in the spraying tower, N is more than or equal to 2, a second-stage purifying device is positioned below a first-stage purifying device, an Nth-stage purifying device is positioned at the bottommost, the first-stage purifying device is positioned at the topmost, the purifying device comprises a spraying assembly, a packing layer and a liquid collecting tank for collecting absorption liquid are sequentially fixed below the spraying assembly, a vent pipe waste gas inlet for passing lower gas is formed in the liquid collecting tank, the upper port of each vent pipe is higher than the bottom of the liquid collecting tank, and the bottom of each liquid collecting tank is respectively connected with a liquid storage box through a liquid discharge pipe;
the number of the liquid storage tanks is n, n is more than or equal to 2, the n liquid storage tanks are sequentially overlapped from top to bottom, the second liquid storage tank is positioned below the first liquid storage tank, the nth liquid storage tank is positioned at the bottom, a water replenishing port is arranged on the first liquid storage tank, a water discharging port is arranged on the nth liquid storage tank, and the water replenishing port is communicated with each stage of liquid storage tank through a water replenishing ball float valve; the upper layer of liquid storage tank and the lower layer of liquid storage tank are communicated through a siphon pipe, a water inlet is arranged on the upper end siphon pipe in the upper layer of liquid storage tank, a water outlet is arranged on the lower end siphon pipe wall in the lower layer of liquid storage tank, siphon float valves are arranged in other liquid storage tanks except the nth stage of liquid storage tank, the siphon float valves control the opening and closing of the water outlet on the lower end siphon pipe wall, when the water level is lowered to the lowest set position, the siphon float valves control the opening of the water outlet, and when the water level is raised to the highest set position, the siphon float valves control the closing of the water outlet; the siphon float valve is sleeved on the lower end siphon pipe, the siphon float valve can move up and down along the lower end siphon pipe relatively, the water outlet is arranged on the pipe wall of the lower end siphon pipe, and the relative movement of the siphon float valve and the siphon pipe is used for controlling the opening and closing of the water outlet; the siphon float valve is connected with the control float ball through a float ball connecting rod, the other end of the control float ball is fixedly arranged on the top wall, a vertical chute is arranged on the siphon float valve, the float ball connecting rod can move up and down relatively along the chute, the siphon float valve can descend along with the descending of the water level, the control float ball controls the siphon float valve not to move relative to the siphon pipe through the float ball connecting rod before the water level rises to the highest set position, and when the water level rises to the highest set position, the control float ball drives the siphon float valve to move upwards through the float ball connecting rod to control the closing of the water outlet; a floating part is fixedly arranged at the bottom of the siphon float valve;
each stage of liquid storage box is provided with a liquid inlet and a liquid outlet, the liquid inlets on two adjacent layers of liquid storage boxes are respectively communicated with a liquid discharge pipe at the bottom of a liquid collecting tank on two adjacent layers of purification equipment, and the liquid outlets on two adjacent layers of liquid storage boxes are respectively communicated with spraying assemblies on two adjacent layers of purification equipment; the liquid discharging end of the liquid storage box positioned on the upper layer is connected with the spraying component positioned on the upper layer purifying equipment through a liquid inlet pipe, a valve and a liquid inlet pump, and the liquid discharging end of the liquid storage box positioned on the lower layer is connected with the spraying component positioned on the lower layer purifying equipment through a liquid inlet pipe, a valve and a liquid inlet pump.
2. The counter-flow multi-stage spraying device according to claim 1, wherein an opening is formed in the top of the liquid collecting tank, the side wall of the liquid collecting tank is tightly attached to the inner wall of the spraying tower, and a water retaining cap is arranged above the upper port of the vent pipe and used for blocking liquid from flowing into the vent pipe.
3. A counter-flow multistage spray device according to claim 1, wherein three first-stage purification equipment, second-stage purification equipment and third-stage purification equipment are arranged in the spray tower in an up-down sequence, the first-stage purification equipment comprises a first-stage liquid collecting tank, the bottom of the first-stage liquid collecting tank is connected with a first-stage liquid storage tank through a liquid discharge pipe, and the liquid discharge end of the first-stage liquid storage tank is connected with the spray component of the first-stage purification equipment through a liquid inlet pipe; the second-stage purification equipment comprises a second-stage liquid collecting tank, the bottom of the second-stage liquid collecting tank is connected with a second-stage liquid storage box through a liquid discharge pipe, and the liquid discharge end of the second-stage liquid storage box is connected with a spraying assembly of the second-stage purification equipment through a liquid inlet pipe; the third-stage purifying equipment comprises a third-stage liquid collecting tank, the bottom of the third-stage liquid collecting tank is connected with a third-stage liquid storage tank through a liquid discharge pipe, and the liquid discharge end of the third-stage liquid storage tank is connected with the spraying assembly of the third-stage purifying equipment through a liquid inlet pipe.
4. The counterflow multistage spray apparatus of claim 1 or 3 wherein a packing layer is provided between the uppermost of said clarification devices and the exhaust port of said spray tower, and said spray tower is provided with a viewing port at a position corresponding to each of said clarification devices.
5. The counter-flow multistage spraying device according to claim 1 or 3, wherein in the same purification equipment, the upper port of the vent pipe is higher than the side wall of the liquid collecting tank, and the lower port of the vent pipe is fixedly connected with the bottom of the liquid collecting tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811464144.7A CN109432959B (en) | 2018-11-30 | 2018-11-30 | Counter-flow type multistage spraying device |
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|---|---|---|---|
| CN201811464144.7A CN109432959B (en) | 2018-11-30 | 2018-11-30 | Counter-flow type multistage spraying device |
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| CN109432959A CN109432959A (en) | 2019-03-08 |
| CN109432959B true CN109432959B (en) | 2021-07-27 |
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| CN114288826B (en) * | 2021-12-30 | 2024-03-19 | 苏州赢众环保有限公司 | Height difference overflow water supplementing method of multi-stage waste gas spray tower |
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| CN109432959A (en) | 2019-03-08 |
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