CN218452020U - Tower and trough integrated efficient washing device - Google Patents
Tower and trough integrated efficient washing device Download PDFInfo
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- CN218452020U CN218452020U CN202123303991.5U CN202123303991U CN218452020U CN 218452020 U CN218452020 U CN 218452020U CN 202123303991 U CN202123303991 U CN 202123303991U CN 218452020 U CN218452020 U CN 218452020U
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Abstract
The utility model belongs to the technical field of chemical production flue gas is handled and is used, specifically disclose integrative high-efficient washing device in tower groove, including flue gas import, transition pipe, first contrary spray tube, the contrary spray tube of second, the contrary spray tube of third, jar body, exhanst gas outlet, first liquid inlet, second spray liquid import, first nozzle and second nozzle etc. spray. The utility model discloses a integrative high-efficient washing device of column chamber's beneficial effect lies in: the device consists of four basic parts, namely a furnace gas inlet, a transition pipe, an overflow weir, a reverse spraying washing cylinder, a nozzle and a circulating liquid separation storage tank, and has the advantages of reasonable design, high purification efficiency and stability.
Description
Technical Field
The utility model belongs to the technical field of chemical production flue gas is handled and is used, concretely relates to integrative high-efficient washing device of tower groove.
Background
The washing tower is a new type of gas purification treatment equipment, it is produced by improving on the basis of floatable packing layer gas purifier, and it is widely used in the pretreatment of industrial waste gas purification, dust removal, etc. and its purification effect is very good. For the coal gasification process, coal gas washing is inevitable, and whatever coal gasification technology is used for the unit operation, the coal gasification process is similar to a washing process in working principle, so the coal gasification process is named as a washing tower.
The existing washing tower has the defects of incomplete flue gas washing, low efficiency, easy blockage, complex equipment, inconvenient operation, use and maintenance and the like.
Therefore, based on the above problem, the utility model provides a integrative high-efficient washing device of tower groove.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a integrative high-efficient washing device of tower groove, its reasonable in design, purification efficiency is high, stable.
The technical scheme is as follows: the utility model provides a tower and trough integrated efficient washing device, which comprises a flue gas inlet, a transition pipe, a first reverse spray pipe, a second reverse spray pipe, a third reverse spray pipe, a tank body, a flue gas outlet, a first spray liquid inlet, a second spray liquid inlet, a first nozzle and a second nozzle; the flue gas import, transition pipe, the contrary spray tube of first contrary spray tube, second, the contrary spray tube of third connect gradually under to from last, the contrary spray tube of third is connected with jar body middle part outer wall, the exhanst gas outlet sets up at jar body upper portion terminal surface, first spray liquid inlet, second spray the liquid import and set up respectively at the contrary spray tube outer wall of first contrary spray tube, third, first nozzle, second nozzle set up respectively in the contrary spray tube of first contrary spray tube, third, and with first spray liquid inlet, second spray liquid access connection.
According to the technical scheme, the tower and tank integrated efficient washing device further comprises an overflow weir inner cylinder arranged on the inner wall of the end face of the upper part of the transition pipe and a plurality of overflow liquid inlets arranged on the outer wall of the overflow weir inner cylinder.
According to the technical scheme, the tower and trough integrated efficient washing device further comprises a corrugated compensator respectively connected with the first inverse spraying pipe and the second inverse spraying pipe.
This technical scheme, integrative high-efficient washing device of tower groove still includes first contrary spray tube manhole, the third contrary spray tube manhole that sets up respectively at first contrary spray tube, the third contrary spray tube outer wall, and sets up the supporting seat at the outer wall of third contrary spray tube lower part.
This technical scheme, integrative high-efficient washing device in tower groove still including setting up at a jar external wall, and be located the overflow mouth of third contrary spray tube, jar body coupling face lower part, and set up at liquid outlet, washing liquid export, the drain of jar body lower part outer wall, and set up at jar body lower part outer wall, and be located the jar body manhole on upper portion between washing liquid export, the drain.
This technical scheme, integrative high-efficient washing device in tower groove still including setting up at jar external wall of body lower part, and be located jar first jar body inlet, the first jar body fluid infusion mouth of body manhole top.
This technical scheme, integrative high-efficient washing device in tower groove still including set up a set of level gauge interface at jar external lower part outer wall, and respectively with a set of level gauge interface connection's anticorrosive type level gauge.
Compared with the prior art, the utility model discloses a integrative high-efficient washing device of column trough's beneficial effect lies in: (1) The purification efficiency is high, and because the relation between the trapping rate and the particle size of the particles is flatter than that of other washers, the classification washing can be effectively carried out, and higher efficiency can be obtained with lower energy; (2) The operation flexibility is large, the air quantity adaptability is wide, and the air quantity can adapt to 50% -100% air quantity change without reducing the washing efficiency, which is difficult to realize by many high-efficiency washers; (3) The gas is sprayed into the liquid by a large-hole non-throttling liquid nozzle, so that the circulating liquid can run at a higher solid content without being blocked, the discharge amount of the liquid can be reduced due to the higher solid content of the circulating liquid, the load and the scale of a liquid treatment device are reduced, generally, the traditional washing equipment is difficult to bear more than 3 percent of the solid content of the circulating liquid and can reach 20 percent of the solid content of the circulating liquid without being blocked, and the open-hole spraying has the other advantages that the liquid is not atomized, the amount of liquid mist in the exhaust gas is very small, and the liquid mist can be removed by using a conventional separator; (4) The equipment is small and exquisite, the manufacture is simple, the material is easy to solve, the investment is saved compared with the traditional purification process, the occupied area is small, the installation time is short, and the investment of one set of purification system is saved by more than 30 percent compared with the equivalent conventional purification system; (5) The device has the advantages of simple structure, convenient operation and maintenance, no movable part in the device, smooth gas channel, high operation feasibility, simple maintenance and long service cycle; (6) The gas purifier has the advantages that the configuration is convenient and flexible, the application range is wide, the gas purifier can be almost used for any gas purification process through proper design, the cooling effect is good, the gas purifier can be used for treating various high-temperature gases, the appearance is small and exquisite, the strength and sealing problems are easy to solve, and the working process is not influenced by pressure, so that the gas purifier can operate under any pressure and has wide adaptability; (7) The high-efficiency scrubber belongs to a class of high-efficiency purification equipment, but the resistance is not high, because the energy of both air flow and liquid flow is utilized skillfully in the operation process, and because the efficiency of a pump is generally higher than that of a fan, the resistance is small compared with other equipment with equal efficiency.
Drawings
FIG. 1 is a schematic front view of a tower-tank integrated high-efficiency washing apparatus of the present invention;
FIG. 2 is a schematic structural view of a top view of the tower-tank integrated high-efficiency washing apparatus of the present invention;
FIG. 3 is a schematic top view of the tower-tank integrated high-efficiency washing apparatus of the present invention;
FIG. 4 is an enlarged overhead structure diagram of the flue gas inlet, the transition pipe, the inner tube of the overflow weir, a plurality of overflow liquid inlets, etc. of the tower-tank integrated high-efficiency washing device of the present invention;
wherein, the sequence numbers in the figure are as follows: 1-a flue gas inlet, 2-an overflow weir inner cylinder, 3-a transition pipe, 4-a first reverse spray pipe, 5-a first spray liquid inlet, 6-a first nozzle, 7-a first reverse spray pipe manhole, 8-a ripple compensator, 9-a second reverse spray pipe, 10-a third reverse spray pipe, 11-a second spray liquid inlet, 12-a second nozzle, 13-a third reverse spray pipe manhole, 14-a supporting seat, 15-a tank body, 16-a flue gas outlet, 17-an overflow port, 18-a first tank body liquid inlet, 19-a first tank body liquid supplementing port, 20-a tank body manhole, 21-a sewage outlet, 22-a group of liquid level meter interfaces, 23-an anticorrosive liquid level meter, 24-a liquid outlet, 25-an overflow liquid inlet and 26-a cleaning liquid outlet.
Detailed Description
The invention will be further elucidated with reference to the drawings and the specific embodiments.
Example one
The tower-tank integrated efficient washing device shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a flue gas inlet 1, a transition pipe 3, a first reverse spray pipe 4, a second reverse spray pipe 9, a third reverse spray pipe 10, a tank body 15, a flue gas outlet 16, a first spray liquid inlet 5, a second spray liquid inlet 11, a first nozzle 6 and a second nozzle 12; flue gas inlet 1, transition pipe 3, first contrary spray tube 4, the contrary spray tube 9 of second, the contrary spray tube 10 of third is from last to connecting gradually down, the contrary spray tube 10 of third is connected with the 15 middle part outer wall of the jar body, exhanst gas outlet 16 sets up at the 15 upper portion terminal surfaces of the jar body, first spray liquid import 5, second spray liquid import 11 sets up respectively at first contrary spray tube 4, the 10 outer walls of the contrary spray tube of third, first nozzle 6, second nozzle 12 sets up respectively in first contrary spray tube 4, the contrary spray tube 10 of third, and with first spray liquid import 5, second spray liquid import 11 is connected.
Example two
The tower-tank integrated efficient washing device shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a flue gas inlet 1, a transition pipe 3, a first reverse spray pipe 4, a second reverse spray pipe 9, a third reverse spray pipe 10, a tank body 15, a flue gas outlet 16, a first spray liquid inlet 5, a second spray liquid inlet 11, a first nozzle 6 and a second nozzle 12; the flue gas inlet 1, the transition pipe 3, first contrary spray tube 4, the contrary spray tube 9 of second, the contrary spray tube 10 of third is from last to connecting gradually down, the contrary spray tube 10 of third is connected with the outer wall in the middle part of the jar body 15, the exhanst gas outlet 16 sets up at the 15 upper portion terminal surfaces of the jar body, first spray liquid import 5, the second spray liquid import 11 sets up respectively at first contrary spray tube 4, the contrary spray tube 10 outer wall of third, first nozzle 6, second nozzle 12 sets up respectively at first contrary spray tube 4, in the contrary spray tube 10 of third, and with first spray liquid import 5, the second sprays liquid import 11 and is connected, and set up the overflow weir inner tube 2 at the 3 upper portion terminal surfaces inner walls of transition pipe, and set up a plurality of overflow liquid inlet 25 at the overflow weir 2 outer walls of overflow weir.
EXAMPLE III
The tower-tank integrated efficient washing device shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a flue gas inlet 1, a transition pipe 3, a first reverse spray pipe 4, a second reverse spray pipe 9, a third reverse spray pipe 10, a tank body 15, a flue gas outlet 16, a first spray liquid inlet 5, a second spray liquid inlet 11, a first nozzle 6 and a second nozzle 12; the flue gas inlet 1, the transition pipe 3, first contrary spray tube 4, the contrary spray tube 9 of second, the contrary spray tube 10 of third connects gradually from top to bottom, the contrary spray tube 10 of third is connected with the outer wall in the middle part of the jar body 15, the exhanst gas outlet 16 sets up at the upper portion terminal surface of the jar body 15, first spray liquid import 5, the import 11 of second spray liquid sets up respectively at the first contrary spray tube 4, the outer wall of the contrary spray tube 10 of third, first nozzle 6, second nozzle 12 sets up respectively in the first contrary spray tube 4, the contrary spray tube 10 of third, and with first spray liquid import 5, the import 11 of second spray liquid is connected, and set up the overflow weir inner tube 2 at the inner wall of the upper portion terminal surface of transition pipe 3, and set up a plurality of overflow liquid inlet 25 at the outer wall of overflow weir inner tube 2, and ripple compensator 8 with first contrary spray tube 4, the contrary spray tube 9 is connected respectively.
Example four
The tower-tank integrated efficient washing device shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a flue gas inlet 1, a transition pipe 3, a first reverse spraying pipe 4, a second reverse spraying pipe 9, a third reverse spraying pipe 10, a tank body 15, a flue gas outlet 16, a first spray liquid inlet 5, a second spray liquid inlet 11, a first nozzle 6 and a second nozzle 12; the gas inlet 1, the transition pipe 3, the first inverse spray pipe 4, the second inverse spray pipe 9, the third inverse spray pipe 10 are connected from top to bottom in sequence, the third inverse spray pipe 10 is connected with the outer wall of the middle part of the tank body 15, the gas outlet 16 is arranged on the upper end face of the tank body 15, the first spray liquid inlet 5 and the second spray liquid inlet 11 are respectively arranged on the outer walls of the first inverse spray pipe 4 and the third inverse spray pipe 10, the first nozzle 6 and the second nozzle 12 are respectively arranged in the first inverse spray pipe 4 and the third inverse spray pipe 10 and are connected with the first spray liquid inlet 5 and the second spray liquid inlet 11, the overflow weir inner cylinder 2 is arranged on the inner wall of the upper end face of the transition pipe 3, the overflow weir inner cylinders 25 are arranged on the outer wall of the overflow weir inner cylinder 2, the corrugated compensators 8 are respectively connected with the first inverse spray pipe 4 and the second inverse spray pipe 9, and the first inverse spray pipe 7 and the third inverse manhole spray pipe 13 are respectively arranged on the outer walls of the first inverse spray pipe 4 and the third inverse spray pipe 10 and the supporting seat 14 is arranged on the lower part of the outer wall of the third inverse spray pipe 10.
EXAMPLE five
The tower-tank integrated efficient washing device shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a flue gas inlet 1, a transition pipe 3, a first reverse spraying pipe 4, a second reverse spraying pipe 9, a third reverse spraying pipe 10, a tank body 15, a flue gas outlet 16, a first spray liquid inlet 5, a second spray liquid inlet 11, a first nozzle 6 and a second nozzle 12; the cleaning solution tank comprises a flue gas inlet 1, a transition pipe 3, a first reverse spraying pipe 4, a second reverse spraying pipe 9 and a third reverse spraying pipe 10 which are sequentially connected from top to bottom, the third reverse spraying pipe 10 is connected with the outer wall of the middle part of a tank body 15, a flue gas outlet 16 is arranged on the upper end face of the tank body 15, a first spraying liquid inlet 5 and a second spraying liquid inlet 11 are respectively arranged on the outer walls of the first reverse spraying pipe 4 and the third reverse spraying pipe 10, a first nozzle 6 and a second nozzle 12 are respectively arranged in the first reverse spraying pipe 4 and the third reverse spraying pipe 10 and are connected with the first spraying liquid inlet 5 and the second spraying liquid inlet 11, an overflow weir inner cylinder 2 arranged on the inner wall of the upper end face of the transition pipe 3, a plurality of overflow liquid inlet ports 25 arranged on the outer wall of the overflow weir inner cylinder 2, corrugated compensators 8 respectively connected with the first reverse spraying pipe 4 and the second reverse spraying pipe 9, a first reverse spraying pipe 7 and a third reverse spraying pipe 13 and a cleaning solution outlet 26 respectively arranged on the outer wall of the first reverse spraying pipe 4 and the outer wall of the third reverse spraying pipe 10, a cleaning solution outlet 26 arranged on the outer wall of the tank body 15, a supporting seat 14 and a lower part of the outer wall of the tank body 15, a cleaning solution outlet 26 arranged between the tank body 15, a cleaning solution outlet 26 and a lower part of the tank body 15, a cleaning solution outlet 26 arranged on the outer wall of the lower part of the tank body 15, a cleaning solution outlet 20 and a lower part of the tank body 15, a cleaning solution outlet 26, a cleaning solution outlet 20 arranged on the outer wall of the tank body 15, a lower part of the tank body 15, a cleaning solution outlet 26.
Example six
The tower-tank integrated efficient washing device shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a flue gas inlet 1, a transition pipe 3, a first reverse spray pipe 4, a second reverse spray pipe 9, a third reverse spray pipe 10, a tank body 15, a flue gas outlet 16, a first spray liquid inlet 5, a second spray liquid inlet 11, a first nozzle 6 and a second nozzle 12; the cleaning solution tank comprises a flue gas inlet 1, a transition pipe 3, a first inverse spray pipe 4, a second inverse spray pipe 9 and a third inverse spray pipe 10 which are sequentially connected from top to bottom, the third inverse spray pipe 10 is connected with the outer wall of the middle part of a tank body 15, a flue gas outlet 16 is arranged on the upper end face of the tank body 15, a first spray liquid inlet 5 and a second spray liquid inlet 11 are respectively arranged on the outer walls of the first inverse spray pipe 4 and the third inverse spray pipe 10, a first nozzle 6 and a second nozzle 12 are respectively arranged in the first inverse spray pipe 4 and the third inverse spray pipe 10 and are connected with the first spray liquid inlet 5 and the second spray liquid inlet 11, an overflow weir inner cylinder 2 arranged on the inner wall of the upper end face of the transition pipe 3, a plurality of overflow liquid inlet ports 25 arranged on the outer wall of the overflow weir inner cylinder 2, a corrugated compensator 8 respectively connected with the first inverse spray pipe 4 and the second inverse spray pipe 9, a first inverse spray pipe 7 and a third inverse manhole spray pipe 13 and a cleaning solution outlet 26 arranged on the outer wall of the first inverse spray pipe 10, a tank body 10 and a supporting seat 20, a cleaning solution outlet 26 arranged on the outer wall of the tank body 15, a cleaning solution outlet 20 and a lower part of the tank body 15, a cleaning solution outlet 26 arranged on the outer wall of the tank body 15, a supporting seat 20 and a drain outlet 20 and a lower part of the tank body 15, a cleaning solution outlet 20 arranged on the outer wall of the tank body 15, a drain outlet 20 and a supporting seat 20.
EXAMPLE seven
The tower-tank integrated efficient washing device shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a flue gas inlet 1, a transition pipe 3, a first reverse spraying pipe 4, a second reverse spraying pipe 9, a third reverse spraying pipe 10, a tank body 15, a flue gas outlet 16, a first spray liquid inlet 5, a second spray liquid inlet 11, a first nozzle 6 and a second nozzle 12; the anti-corrosion cleaning tank comprises a flue gas inlet 1, a transition pipe 3, a first inverse spray pipe 4, a second inverse spray pipe 9 and a third inverse spray pipe 10 which are sequentially connected from top to bottom, the third inverse spray pipe 10 is connected with the outer wall of the middle part of a tank body 15, a flue gas outlet 16 is arranged on the upper end face of the tank body 15, a first spray liquid inlet 5 and a second spray liquid inlet 11 are respectively arranged on the outer wall of the first inverse spray pipe 4 and the outer wall of the third inverse spray pipe 10, a first nozzle 6 and a second nozzle 12 are respectively arranged in the first inverse spray pipe 4 and the third inverse spray pipe 10 and are connected with the first spray liquid inlet 5 and the second spray liquid inlet 11, an overflow weir inner cylinder 2 arranged on the inner wall of the upper end face of the transition pipe 3, a plurality of overflow liquid inlet ports 25 arranged on the outer wall of the overflow inner cylinder 2, a corrugated compensator 8 respectively connected with the first inverse spray pipe 4 and the second inverse spray pipe 9, a first inverse spray pipe 7 and a third inverse spray pipe 13 and a liquid level meter 26 arranged on the outer wall of the first inverse spray pipe 10, a group of a tank body 15, a liquid level meter 20 and a liquid level meter 20 are respectively arranged on the outer wall of the tank body, a group of a drain outlet port 20 and a liquid meter 20, a liquid level meter 20 is arranged on the outer wall of the tank body 15, a group of a drain port 15, a drain port of a drain port 20 and a group of a drain meter 20, a drain meter 20 arranged on the outer wall of the tank body 15, a drain port of a drain port 15, a drain port of a tank body 15.
The tower-tank integrated efficient washing device with the structure consists of four basic parts, namely a furnace gas inlet transition pipe, an overflow weir, a reverse spraying washing cylinder, a nozzle and a circulating liquid separation storage tank. The liquid is sprayed into the washing barrel through a large-aperture non-throttling nozzle against the airflow, the airflow collides with the liquid, so that the liquid is forced to be radially sprayed to the barrel wall from inside to outside, a strong turbulent region is formed in an air-liquid interface region, the momentum of the fluid is balanced, the air and the liquid are closely contacted to generate stable 'standing waves' (foam regions), and the 'standing waves' float in the airflow and rise and fall along with the momentum of the air and the liquid. Within the bubble zone, particle capture, gas absorption and gas quenching are effected by the gas contacting the extremely large and rapidly renewing liquid surface.
The tower and tank integrated efficient washing device with the structure has the characteristics of unique foam washing mode and equipment structure.
The tower-tank integrated efficient washing device with the structure has the advantages that the furnace gas inlet transition pipe and the overflow weir adopt a graphite sleeve and a lead lining assembly which are temperature-resistant, wear-resistant and corrosion-resistant. The reverse spray vertical pipes (the first reverse spray pipe, the second reverse spray pipe and the third reverse spray pipe) and the gas-liquid separation tower (the tank body) are made of a temperature-resistant and fluorine-resistant phenolic Fiberglass Reinforced Plastic (FRP) material, the thickness of the gas-liquid separation tower is 22mm, and the spray heads (the first spray nozzle and the second spray nozzle) are made of F46.
The main design parameters of the high-efficiency washing tower are shown in the following table:
name (R) | Parameter(s) |
Number of | 1 set of |
Material and thickness of reverse spray vertical pipe and gas-liquid separation tower | FRP、22mm |
Transition pipe and overflow weir material | Graphite sleeve and lead lined composite member |
Diameter of reverse spray pipe of high-efficiency washing tower | Φ1600mm |
Air velocity | 20m/s |
Inlet temperature | ~350℃ |
Outlet temperature | ≤70℃ |
Liquid to gas ratio | 9.26L/m3 |
Total column pressure drop | ≤1000Pa |
Nozzle material | F46 |
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (1)
1. Integrative high-efficient washing device in column chamber, its characterized in that: the device comprises a flue gas inlet (1), a transition pipe (3), a first reverse spray pipe (4), a second reverse spray pipe (9), a third reverse spray pipe (10), a tank body (15), a flue gas outlet (16), a first spray liquid inlet (5), a second spray liquid inlet (11), a first nozzle (6) and a second nozzle (12); the flue gas inlet (1), the transition pipe (3), the first reverse spraying pipe (4), the second reverse spraying pipe (9) and the third reverse spraying pipe (10) are sequentially connected from top to bottom, the third reverse spraying pipe (10) is connected with the outer wall of the middle part of the tank body (15), the flue gas outlet (16) is arranged on the upper end face of the tank body (15), the first spraying liquid inlet (5) and the second spraying liquid inlet (11) are respectively arranged on the outer walls of the first reverse spraying pipe (4) and the third reverse spraying pipe (10), and the first nozzle (6) and the second nozzle (12) are respectively arranged in the first reverse spraying pipe (4) and the third reverse spraying pipe (10) and are connected with the first spraying liquid inlet (5) and the second spraying liquid inlet (11); an overflow weir inner cylinder (2) arranged on the inner wall of the upper end face of the transition pipe (3), a plurality of overflow liquid inlets (25) arranged on the outer wall of the overflow weir inner cylinder (2), a corrugated compensator (8) respectively connected with the first reverse spraying pipe (4) and the second reverse spraying pipe (9), a first reverse spraying pipe manhole (7) and a third reverse spraying pipe manhole (13) respectively arranged on the outer walls of the first reverse spraying pipe (4) and the third reverse spraying pipe (10), a supporting seat (14) arranged on the outer wall of the lower part of the third reverse spraying pipe (10) and an outer wall of the tank body (15), an overflow port (17) positioned at the lower part of the connecting surface of the third reverse spray pipe (10) and the tank body (15), a liquid outlet (24), a cleaning liquid outlet (26) and a sewage outlet (21) which are arranged on the outer wall of the lower part of the tank body (15), and a sewage outlet which is arranged on the outer wall of the lower part of the tank body (15), a tank body manhole (20) which is arranged at the upper part between the cleaning liquid outlet (26) and the sewage discharge outlet (21) and is arranged on the outer wall of the lower part of the tank body (15), and the first tank body liquid inlet (18) and the first tank body liquid supplementing port (19) are positioned above the tank body manhole (20), the liquid level meter interfaces (22) are arranged on the outer wall of the lower part of the tank body (15), and the anti-corrosion liquid level meters (23) are respectively connected with the liquid level meter interfaces (22).
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CN202123303991.5U CN218452020U (en) | 2021-12-27 | 2021-12-27 | Tower and trough integrated efficient washing device |
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CN202123303991.5U CN218452020U (en) | 2021-12-27 | 2021-12-27 | Tower and trough integrated efficient washing device |
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CN218452020U true CN218452020U (en) | 2023-02-07 |
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