RU1824250C - Side suction device for industrial baths - Google Patents

Abstract

Use: in bath processes of a product to reduce atmospheric emissions. SUMMARY OF THE INVENTION: In order to improve the quality of air purification, an on-board suction device comprises a slot receiver, a pipeline, a filter element mounted in a removable housing. The filter element is made in the form of an endless belt of porous elastomeric material provided with a fabric backing to prevent stretching of the belt. The tape is placed on perforated hollow drums. A pinch roller is fixed under the lower drum. Under the upper drum 7, a tray with a gable bottom is strengthened. After the tape is saturated with liquid, it is scrolled and squeezed from the liquid due to the deformation of the tape during bending on the drums, as well as by the pressure roller. 2 s of f-ly, 3 ill.

Description

The invention relates to ventilation and can be used in all sectors of the national economy, where the processes of bath processing of products are used for their oiling, pickling, plating.

The purpose of the invention is to improve the quality of air purification from liquid harmful substances.

This is achieved by the fact that in the enclosed on-board suction device for industrial baths, comprising a slotted receiver connected to a pipeline and arranged in front of the receiver, a filter element mounted in a removable housing and provided with means for removing the trapped liquid phase, according to the invention, the filter element is made in the form of a drive endless belt of porous elastic material mounted on perforated hollow drums, placed under the lower drum

a pressure roller and, fixed under the upper drum, between the branches of the tape, means for removing the trapped liquid, made in the form of a tray with a gable bottom, the lower part of which is located at the side walls of the housing. It is advisable that the endless tape be divided into separate sections by means of diaphragms made of elastic material, and the tape drive is equipped with a control unit connected to a hazard concentration sensor mounted in the cavity of the slot receiver.

The implementation of the filter element in the form of an endless belt equipped with a drive of porous elastic material, placing the tape on perforated hollow drums, supplying the belt with a pressure roller fixed under the lower drum allows for two-stage filtration and

(L

WITH

oe

Yu

yo o o

periodic extraction of the filter element, which significantly reduces kapleunos. The implementation of the means for draining the trapped liquid in the form of a tray placed under the upper drum between the branches of the tape, the implementation of a tray with a gable bottom, placement of the lower part of the bottom of the tray at the side walls of the housing will allow for the removal of the liquid phase squeezed by the upper drum without re-spraying on the surface of the tape.

The separation of the endless tape into a separate section by means of diaphragms made of elastic material eliminates the flow of the squeezed liquid phase to other sections of the tape and thereby prevents re-contamination especially of the second branch of the tape. Providing the drive of the tape with the control unit, connecting the control unit to the hazard concentration sensor, fixing the specified sensor in the cavity of the slot receiver allows automatic extraction of the liquid phase from the tape when the maximum permissible concentration of harmful substances is reached after filtration.

In FIG. 1 shows a diagram of the proposed device, a General view; figure 2 - section aa in fig. 1; on figs - node I in fig. 1.

The side suction for industrial baths contains a slotted receiver 1 connected to a pipe 2 and a filter element 3 located in front of the receiver, mounted in a removable housing 4.

The filter element 3 is made in the form of an endless belt 5 of a porous elastic material. The tape 5 is provided with a fabric backing 6, which prevents stretching of the tape 5.

The tape 5 with the substrate 6 is placed on the perforated hollow drums 7 and 8. Under the drum 8, the pressure roller 9 is fixed. The means for removing the trapped liquid is made in the form of a tray 10, located under the upper drum 7 between the branches of the tape 5. The tray 10 is made with a gable bottom , the lower part of which is located at the side walls 11 of the housing 4.

It is advisable that the endless belt 5 be divided into separate sections 12 by means of diaphragms 13 of elastic material. The rotation drive of the tape 5 can be made in the form of a handle fixed to the shaft of the upper drum 7 (the handle is not shown in the diagram}. It is advisable that the electric drive 14 with a gearbox equipped with a control unit 15 be installed as the drive of the tape 5, and specified control block

0

5

0

0

5

5

5

0

5

0

should be connected to the sensor 16 of the concentration of harmful substances fixed in the cavity of the slotted receiver 1. To prevent leakage of the untreated gas, the tape 5 is equipped with elastic-elastic seals 17 and seals 10, mounted on the ends of the tape on both sides.

Onboard suction works as follows. The contaminated air is sucked off from the surface of the industrial bath into the pipe 2. When air passes through the first branch of the belt 5, aerosol particles of the product in the air settle in the pores of the filter material and coagulate. Next, the air crosses the second branch of the tape 5, where it is finally cleaned of the liquid phase and removed through line 2.

As the filter material of the tape 5 is saturated, it is squeezed. To do this, rotate the upper drum 7 with a handle (not shown in the diagram), for example, clockwise. When bending on the drum 7, the filter material of the tape 5 is deformed, thinned, the liquid is squeezed out through the perforation of the drum 7 into its cavity and then flows through the tray 10 onto the walls 11 of the housing 4. On the walls 11, liquid in the form of a film flows between the branches of the tape 5 to the surface bath liquids. Such organization of the drainage of liquid prevents re-entrainment of it by air and transfer to the second branch of the tape 5.

In the lower part, the filter material of the tape 5 is squeezed due to its bending through the drum 8, as well as by the pressure roller 9.

The supply of the tape 5 with the diaphragms 13 allows, when the tape 5 is bent around the drum 7, it is possible to squeeze out the liquid only into the cavity of the drum 7, excluding partial extraction into the already squeezed right branch of the tape 5.

The execution of the tape drive 5 in the form of an electric motor 14 with a control unit 15 and a sensor 16 allows automatic extraction of the tape as follows.

As soon as the concentration of harmful substances in the slit receiver 1 reaches the limit values, which indicates the supersaturation of the tape 5 with the liquid phase, the sensor 16 sends a signal to the control unit 15, and the latter turns on the electric motor 14, which scrolls the tape 5 and squeezes the liquid. After reducing the concentration of harmful substances below permissible limits at the signal of the sensor 16, the control unit 14 turns off the motor 14.

Technical and economic efficiency of the proposed device in comparison with

Claims (3)

The prototype is to improve the quality of air purification from liquid harmful substances up to 15-20% due to two-stage cleaning through an endless strip of porous elastic material. In this case, the first branch of the tape is most submerged and captures the bulk of the liquid, and the second branch is much less saturated with liquid and at the same time squeezed simultaneously with the first branch of the tape, therefore, there are no conditions for repeated droplet drop into the suction pipe. SUMMARY OF THE INVENTION 1. On-board suction for industrial baths, comprising a slotted receiver connected to a discharge pipe and arranged in front of the receiver with a filter element mounted in a removable housing and provided with means for removing the trapped liquid phase, characterized in that the filter element is made in the form an endless drive belt made of porous elastic elastic material mounted on perforated hollow drums is equipped with a pressure roller located under the lower drum, and means for removing the liquid phase is placed between the branches of the tape under the lower drum and is made in the form of a tray with a gable bottom, the lower part of which located at the side walls of the housing. 2. A suction pump according to claim 1, characterized in that it is equipped with elastic diaphragms fixed in the tape with the possibility of forming separate sections in it. 3. A suction pump according to claim 1, characterized in that it is equipped with an interconnected hazard concentration sensor located in the cavity of the slotted receiver, and a control unit associated with the tape drive. Shchig1