Film production solvent recovery unitTechnical field
The present invention relates to a kind of solvent recovery unit, be specifically related to a kind of film production solvent recovery unit.
Background technology
In film production process, especially salivating and be coated with and producing on membrane process is to produce a large amount of steam, these steam are with a large amount of production solvents, if directly discharge, not only easily to environment, and easily causes solvent waste, existing retracting device complex structure, and the volatile difficult recovery of solvent, the rate of recovery is low, and impact is recycled.
Summary of the invention
Object of the present invention is exactly the defect existing for prior art, provides a kind of simple in structure, utilizes the water-soluble feature of solvent can improve organic efficiency, reduces environmental pollution, and recovering effect is good, the film production solvent recovery unit that can reduce production costs.
Its technical scheme is: film production solvent recovery unit, comprise blower fan, the outlet of described blower fan is connected with sprayed tank, the bottom of described sprayed tank is provided with water storage cavity, the outlet of described blower fan is connected with the bottom of sprayed tank by pipeline, the connector of described sprayed tank and blower fan is positioned at the top of water storage cavity, one side of described sprayed tank is provided with the spray pump being communicated with water storage cavity, described spray pump is connected with the shower tray that is positioned at sprayed tank by pipeline, described shower tray is provided with multiple shower nozzles, described shower tray is positioned at sprayed tank inner chamber top, the top of described sprayed tank is provided with waste gas outlet, described water storage cavity is also connected with solvent recovery pump.
Described shower tray is two rows, is set in parallel in respectively in sprayed tank.
In described water storage cavity, be provided with level display device.
The shape of every row's shower tray is consistent with the shape of cross section of sprayed tank.
The present invention compared with prior art, has the following advantages: simple in structure, can improve organic efficiency, and reduce environmental pollution, recovering effect is good, can reduce production costs.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Detailed description of the invention
With reference to Fig. 1, film production solvent recovery unit, comprise blower fan 1, the outlet of described blower fan 1 is connected with sprayed tank 2, the bottom of described sprayed tank 2 is provided with water storage cavity 3, the outlet of described blower fan 1 is connected with the bottom of sprayed tank 2 by pipeline, the connector of described sprayed tank 2 and blower fan 1 is positioned at the top of water storage cavity 3, one side of described sprayed tank 2 is provided with the spray pump 4 being communicated with water storage cavity 3, described spray pump 4 is connected with the shower tray 5 that is positioned at sprayed tank 2 by pipeline, described shower tray 5 is provided with multiple shower nozzles 6, described shower tray 5 is positioned at sprayed tank 2 inner chamber tops, the top of described sprayed tank 2 is provided with waste gas outlet 7, described water storage cavity 3 is also connected with solvent recovery pump 8.
Described shower tray 5 is two rows, is set in parallel in respectively in sprayed tank 2.Can increase the rate that crosses of steam and water, thereby prevent that solvent vapo(u)r from discharging from waste gas outlet 7, ensure collection rate and environmental pollution.
In described water storage cavity 3, be provided with solvent strength detector 9.
The shape of every row's shower tray 5 is consistent with the shape of cross section of sprayed tank 2.Can make like this solvent vapo(u)r fully be integrated with water and cross, make solvent become water droplet and fall in water storage cavity 3.
When concrete use, on salivation and painting membrane process, blower fan 1 is set, by blower fan 1 by produce time produce steam suction sprayed tank 2 in, in sprayed tank 2, be provided with two row's shower trays 5, steam with solvent enters by the bottom of sprayed tank 2, solvent vapo(u)r is risen by the bottom of sprayed tank 2, spray pump 4 is extracted the water in water storage cavity 3 to send into shower tray 5 by shower 10 out, and unrestrained downwards by the shower nozzle 6 arranging in shower tray 5, solvent vapo(u)r crosses with water droplet in uphill process like this, solvent vapo(u)r incorporates in water droplet, fall in the water storage cavity 3 of sprayed tank 2 bottoms, the moisture with solvent in water storage cavity 3 repeats to pump by spray pump 4, work capable of circulation, after solvent strength in solvent strength detector 9 detects water storage cavity 3 is too high, by solvent recovery pump 8, the liquid in water storage cavity 3 is extracted out and sent into subsequent processing separation, and fresh moisture will be sent in water storage cavity 3, easy to use, water-fast waste gas is discharged and is entered subsequent processing by waste gas outlet 7, can reduce environmental pollution.
The present invention is simple in structure, can improve organic efficiency, reduces environmental pollution, and recovering effect is good, can reduce production costs.