JPS5851984Y2 - Pre-treatment equipment for painting - Google Patents

Description

[Detailed explanation of the invention] The pretreatment process for conventional painting consists of degreasing and film formation, etc.
There is a water washing step after each step, and it is required to completely wash away the chemical solution.

To explain the degreasing process of each process, the treated product after the degreasing process is coated with degreasing liquid and then enters the water washing process, where the concentration of the degreasing liquid in the washing water is to wash off the adhering degreasing liquid. As the amount of water rises and complete washing becomes impossible, it is necessary to constantly replenish the washing tank with a large amount of fresh water to renew the washing water, and the amount of replenishment water and wastewater treatment cause pollution. This was very inconvenient in terms of work and use, such as increasing running costs.

The present invention is directed to a coating pretreatment device that eliminates these inconveniences, saves water resources, prevents pollution, and enables reliable pretreatment.

An embodiment of the configuration of the present invention will be described below with reference to the drawings.

In the figure, 1 shows the whole degreasing device, and 2 is a degreasing tank with an entrance for carrying in the object to be coated 3 on the side, and the bottom is inclined in the shape of a boat bottom and connected to a liquid tank 5 having a valve 4. are doing.

Reference numeral 6 denotes degreasing piping, and several pipes are provided at appropriate intervals along the inner surface of the wall of the degreasing tank 2, and the lower parts of the pipes are connected to form a single body. one end is connected to the pump 8 connected to the liquid tank 5,
The other end is inserted into the liquid tank 5.

Reference numeral 9 denotes a pre-washing pipe, which is installed along the inner surface of the wall of the degreasing tank 2, with the nozzle 7 facing inward, several pieces are installed at appropriate positions, and one end is connected to a water tap. It is provided adjacent to the degreasing tank 2 on the opposite side from the inlet.

Reference numeral 10 indicates the entire washing device, and 11 is a washing tank, the bottom of which is inclined and a water tank 13 having a valve 12 is installed below.

Reference numeral 14 designates water washing pipes, which are provided in several pipes at appropriate intervals along the inner surface of the wall of the water washing tank 11, and their lower parts are connected to form a single body. One end is connected to a pump 15 connected to the water tank 13 and provided with a valve, and the other end is inserted into the water tank 13.

A connecting pipe 16 connects the pipe 14 and a water faucet.

Reference numeral 17 denotes a rail, which is installed above the degreasing device 1 and the water washing device 9 to facilitate guiding of the object 3 to be coated.

Note that a rotating chain or the like is separately provided for feeding the object 3 to be coated.

Next, the functions and effects of the present invention will be explained.

A feeding device (not shown) is activated to guide the object 3 to be coated from the inlet into the degreasing tank 2, and at the same time, the pump 8 is activated to send the degreasing liquid from the liquid tank 5 through the pump 8 to the piping 6.
The nozzles 7, 7'... start spraying in the degreasing tank 2.

Then, while the object to be painted 3 passes through the pipe 6, the object to be painted 3 is degreased with a degreasing liquid.
．． 7'... Preliminary washing by spraying water.

In this case, for degreasing, approximately 50 cc of degreasing liquid is taken out per 1 m2 of the object to be treated, so by spraying water commensurate with the amount taken out, the degreasing liquid adhering to the object to be painted 3 can be washed away. The washed liquid mixes with the degreasing liquid from the pipe 6, enters the liquid tank 5 from the bottom of the degreasing tank 2, and accumulates therein, which prevents the base liquid from decreasing and also prevents chemicals from flowing out. can be prevented.

Since this degreasing liquid has a temperature of about 50 to 60 DEG C., water from the preliminary washing, which increases in concentration as water evaporates, is mixed in with the degreasing liquid, resulting in a degreasing liquid with an appropriate concentration, which can be sent again from the pump 8 and used.

The object to be coated 3 that has been preliminarily washed in this way moves further and is sprayed with water spouting from the nozzles 7, 7' of the manned piping 14 into the washing tank 11 of the washing device 10. Water washing is started, and once the water washing is completely completed, the product is sent to the next process.

In that case, the water after washing collects in the water tank 13 from the bottom of the washing tank 11, and is sent to the pipe 14 by either the water from the connecting pipe 16 or the water supplied by the pump 15. If the water in the water tank 13 becomes dirty, the water is removed by the valve 12. Discharge.

As mentioned above, in the present invention, a plurality of nozzles 7, 7', etc. are provided at appropriate positions, and the object to be coated 3 can freely pass through the interior of several pipes 6 that are connected to and run along the inner surface of the wall. Degreasing device 1 that enables circulation of degreaser and nozzle 7゜7'...
A water washing device 10 in which the object to be painted 3 can freely pass through the inside of the pipe 14 in which a plurality of ... are installed at appropriate positions, and water can be circulated.
In the treatment equipment which is connected to the degreaser 1 and has a rail at the top, a pre-rinsing pipe 14 is provided in parallel with the pipe 6 on the opposite side of the degreasing equipment 1, thereby saving water and preventing pollution. It also has the advantage of being able to perform pretreatment reliably.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a cross-sectional view of the present invention, FIG. 2 is a side view of the present invention, and FIG. 3 is a cross-sectional view taken along line AA in FIG. 1. 1...Degreasing device, 3...Object to be painted, 6
...Piping, 7...Nozzle, 7...
... Nozzle, 9 ... Piping, 10 ... Water washing device, 14 ... Piping, 17 ... Rail.

Claims (1)

[Scope of utility model registration request] A plurality of nozzles 7, 7', etc. are installed at appropriate positions so that the object to be coated 3 can freely pass through several pipes 6 and 14 that are connected along the inner surface of the wall to remove degreasing and coating liquid. In a processing device in which a degreasing device 1 and a water washing device 10 are connected in series, which enable circulation and water circulation separately, a preliminary water washing pipe 9 is provided between the degreasing device 1 and the water washing device 10, closer to the degreasing device 1. A pre-treatment device for painting, characterized in that a pre-washing liquid is mixed with a degreasing liquid.