CN101954330A - Powder recovery device - Google Patents

Abstract

The invention discloses a powder recovery device, which comprises a powder recovery pipe arranged at the bottom of a powder spraying chamber, wherein the powder recovery pipe is connected with an exhaust pipe, the exhaust pipe is connected with a centrifugal fan, and the exhaust pipe is connected with a cyclone powder recoverer respectively communicated with the powder recovery pipe and the centrifugal fan, and is characterized in that: the powder recycling port is internally provided with a turnover plate mechanism which can be turned over and opened, an air draft slit is formed between the turnover plate mechanism and the powder recycling port, and air nozzles which can blow powder on the bottom plate of the powder spraying chamber to the powder recycling port are arranged on two sides of the bottom of the powder spraying chamber. The invention aims to overcome the defects in the prior art, and provides the powder recovery device for the powder spraying chamber, which is simple in structure, convenient to operate and simple, can quickly and effectively recover redundant powder in spraying, and effectively reduces manual intervention in powder cleaning.

Description

A powder recovery device

technical field

The invention relates to a powder recovery device.

Background technique

In the existing electrostatic spraying booth, during the spraying process, most of the powder is adsorbed on the surface of the workpiece after being charged, and some powder falls to the bottom of the spraying booth due to gravity. If the excess powder cannot be recovered efficiently, then it will increase the cost of production. After the spraying is completed or when the spraying color is changed, the powder in the spraying room and the powder recovery room must be cleaned up. At present, the cleaning and recovery of the powder is generally done manually, and the staff must use a special gas mask to carry out related operations. . Manual operation is not only time-consuming and cumbersome, but also causes certain harm to the health of the staff.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a simple structure, which can quickly and effectively recover the redundant powder in spraying, effectively reduce manual intervention when cleaning the powder, easy to operate, and simple for powder spraying. Chamber powder recovery device.

In order to achieve the above object, the present invention adopts the following scheme:

A powder recovery device, comprising a powder recovery pipe arranged at the bottom of the powder spraying chamber, the powder recovery pipe is connected to a suction pipe, the suction pipe is connected to a centrifugal fan, and the suction pipe is connected to a centrifugal fan. The tube is connected with a cyclone powder recoverer which is respectively connected with the powder recovery pipe and the centrifugal fan, and the feature is that: the powder recovery port is provided with a turning mechanism which can be flipped and opened, and the turning mechanism is connected with the Air suction slits are formed between the powder recovery ports of the powder spray chamber, and air nozzles that can blow the powder on the bottom plate of the powder spray chamber to the powder recovery port are arranged on both sides of the bottom of the powder spray chamber.

A powder recovery device as described above is characterized in that the turnover mechanism includes a turnover panel, the turnover panel is hinged to the bottom plate of the powder spraying chamber through a hinge shaft, and the two sides of the turnover panel are connected to the powder recovery pipe. A draft slit is formed between them, a rocker is connected to one end of the hinged shaft, a connecting rod is hinged to one end of the rocking rod, and the other end of the connecting rod is connected to the cylinder shaft of a cylinder.

A powder recovery device as described above is characterized in that a filter is connected below the centrifugal fan, and a powder recovery container is arranged below the filter.

A powder recovery device as described above is characterized in that a recovery powder pipe connected to the powder supply bucket is provided on the bottom of the cyclone powder recovery device, and a powder recovery pipe is connected between the cyclone powder recovery device and the powder supply bucket. There is a powder sieve.

In summary, the present invention has the beneficial effects relative to the prior art as follows:

In the present invention, a powder recovery tube is provided on the bottom of the powder spraying chamber, and an automatic opening flap mechanism is arranged on the powder recovery tube. A draft slit is formed between the flap mechanism and the powder recovery tube, and the powder is charged. Finally, under the electric field and aerodynamic force, most of them are adsorbed on the surface of the workpiece; the excess unabsorbed charged powder falls down under the action of the centrifugal fan and gravity, and most of the powder enters the powder recovery room along the draft slit. Part of the powder falls on the turnover plate and the bottom plate of the powder spraying room. The cyclone powder recycler can be cleaned up and recycled quickly and efficiently.

The flap mechanism is automatically opened at the set time, and the cylinder is controlled so that the connecting rod connected to the cylinder shaft drives the rocker so that the flap rotates from the horizontal direction to the vertical direction. After the flap is opened, the powder slides down from the flap and is sucked away by the centrifugal fan at the same time, and is recycled by the cyclone powder recovery device.

The invention has a simple mechanism, can effectively and rapidly recover redundant spraying powder, and can effectively reduce manual intervention for cleaning the powder spraying chamber and the powder recovery chamber after the spraying is completed or when the powder spraying color is changed. Greatly reduce the hazards of powder spraying to the staff.

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is a schematic diagram of the flip mechanism of the present invention when it is opened.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing description and specific embodiment:

A kind of powder recovery device as shown in Figure 1 and 3, comprises the powder recovery pipe 2 that is arranged on the bottom of powder spraying chamber 1, and described powder recovery pipe 2 is connected with a suction pipe 3, and described suction pipe 3 is connected to the centrifugal fan 4, and a cyclone powder recoverer 5 connected to the powder recovery tube 2 and the centrifugal fan 4 is connected to the exhaust pipe 3, and the powder recovery tube 2 is provided with The flap mechanism 6 that can be flipped and opened, the draft slit 7 is formed between the flip mechanism 6 and the powder recovery pipe 2, and there are two sides on the bottom of the powder spray chamber 1 that can be placed on the bottom plate of the powder spray chamber 1. The powder is blown to the air nozzle 8 of the powder recovery pipe 2.

The turnover mechanism 6 described in the present invention includes a turnover panel 61, and the turnover panel 61 is hinged to the bottom plate of the powder spraying chamber 1 through a hinge shaft. The slit 7 is connected with a rocking bar 9 on one end of the hinge shaft, and a connecting rod 10 is hinged on one end of the rocking rod 9, and the other end of the connecting rod 10 is connected with the cylinder shaft of a cylinder 11.

In the present invention, a filter 12 is connected below the centrifugal fan 4 , and a powder recovery container 13 is arranged below the filter 12 . A powder recovery pipe 15 connected to the powder supply bucket 14 is provided on the bottom of the cyclone powder recovery device 5 , and a powder sieve 16 is connected between the cyclone powder recovery device 5 and the powder supply bucket 14 .

Working principle of the present invention:

During the normal use of the powder spraying chamber 1, the flap 61 of the flap mechanism 6 is in a closed state for a long time, and a draft slit 7 is formed between the flap 61 and the powder recovery port 2. Most of the powder is adsorbed on the surface of the workpiece under the aerodynamic force; the excess unabsorbed charged powder falls downwards under the action of the centrifugal fan 4 and gravity, most of the powder enters the powder recovery port 2 along the draft slit 7, and a small part of the powder Fall on the bottom plate of the turning plate 61 and the powder spraying room, the powder on the bottom plate of the powder spraying room is blown into the air-drawing slit 7 by the air nozzles 8 on both sides of the bottom of the powder spraying room 1, and the powder on the bottom plate of the powder spraying room The powder can be quickly and effectively cleaned and recovered for recycling through the cyclone powder recoverer 5.

The flip mechanism 6 is automatically opened at the set time, and the cylinder 11 is controlled so that the connecting rod 10 connected to the cylinder shaft drives the rocker 9 so that the flip 61 rotates from the horizontal direction to the vertical direction. After the flap 61 is opened, the powder slides off the flap and is sucked away by the centrifugal fan 4 at the same time, and is recycled by the cyclone powder recoverer 5 .

Claims (4)

1. powder recovering device, comprise the Powder Recovery pipe (2) that is arranged on powder spraying chamber (1) bottom, described Powder Recovery pipe (2) is connected with an exhaust column (3), described exhaust column (3) is connected with centrifugal fan (4), on described exhaust column (3), be connected with a whirlwind Powder Recovery device (5) that is communicated with Powder Recovery pipe (2) and centrifugal fan (4) respectively, it is characterized in that: in described Powder Recovery mouth (2), be provided with the turning panel turnover mechanism of opening (6), form exhausting slit (7) between described panel turnover mechanism (6) and the described Powder Recovery mouth (2), on both sides, powder spraying chamber (1) bottom, be provided with the air blast beak (8) that the powder on powder spraying chamber (1) base plate can be blowed to described Powder Recovery mouth (2).

2. a kind of powder recovering device according to claim 1, it is characterized in that described panel turnover mechanism (6) comprises turnover panel (61), described turnover panel (61) is hinged on powder spraying chamber (1) base plate by a jointed shaft, form exhausting slit (7) between described turnover panel (61) both sides and the Powder Recovery pipe (2), on described jointed shaft one end, be connected with a rocking bar (9), be hinged with a connecting rod (10) on described rocking bar (9) one ends, described connecting rod (10) other end is connected with the cylinder axis of a cylinder (11).

3. a kind of powder recovering device according to claim 1 is characterized in that being connected with filter (12) in the below of described centrifugal fan (4), is provided with Powder Recovery container (13) in described filter (12) below.

4. a kind of powder recovering device according to claim 1, it is characterized in that on described whirlwind Powder Recovery device (5) bottom, being provided with the recovery tube cell (15) that is connected with powder barrel (14), between described whirlwind Powder Recovery device (5) and powder barrel (14), be connected with dressing sieve (16).

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