RU2275249C1 - Recuperator of chamber for applying polymeric powder coatings - Google Patents

Abstract

FIELD: apparatus using free vortex flow.

SUBSTANCE: recuperator comprises housing made of cylindrical and conical members, fan motor, fan, air duct, and hopper. The motor of the fan is mounted in the top part of the housing above the fan, and output shaft of the fan faces the motor to define the connection with the fan. The inlet branch pipe of the fan faces the air duct to define connection. The air duct has inlet port which is the outlet port of the chamber. The housing of the fan motor and hopper are detachable and can be made of aluminum.

EFFECT: simplified cleaning.

1 cl, 2 dwg

Description

The technical solution proposed for protection by the patent of the Russian Federation for the invention relates to devices designed for the recovery of the exhausted air masses of the chamber for applying polymer powder coatings and their cleaning. The invention can be used in any field of technology in which the process of applying polymer powder coatings to products is carried out.

Devices of a similar purpose are well known in the art. So, for example, a cyclone is known (Uzhov V.N., Waldberg A.Yu., Myagkov B.M., Reshidov I.K. Purification of industrial gases from dust: M .: Chemistry, 1981, p. 87, Fig. 2.13 b) (1) comprising a housing, an inlet, a discharge opening, a hopper, and an exhaust pipe.

The disadvantage of the cyclone is the significant entrainment of the powder from the hopper by an internal spiral flow into the exhaust pipe.

Also known from the prior art is a cyclone from the description of the USSR copyright certificate 1673220, class. B 04 C 5/14, 1991 (2), comprising a housing with a perforated lower part located in the hopper, an inlet pipe, a discharge opening, an exhaust pipe and a cowl installed in the discharge opening coaxially with it.

The disadvantage of the cyclone is that part of the powder is picked up by an internal spiral flow at the discharge opening. During the recovery of the powder, a significant amount of air enters the cyclone hopper (both a prototype and an analog), which swells the powder, while the entrainment of the powder from the hopper increases.

Devices of a similar purpose are also known from foreign patent documentation. For example, a recuperator of a polymer powder coating chamber is disclosed in the patent specification DE 4232382, B 04 C 5/103; B 04 C 5/14, 1994-03-24 (3).

The closest analogue to the claimed technical solution is the recuperator of the chamber for applying polymer powder coatings, disclosed in the description and graphic materials of patent RU 2115484 C1, B 04 C 5/185, 1998.07.20 (4). The recuperator comprises a housing, a fan motor, a fan, an air duct, and a hopper.

Common disadvantages for all of the analogues mentioned above are the technologically complex, bulky design, characterized by the presence of additional air ducts, leading to unnecessary losses in the aerodynamics of the recuperator, subsequently affecting its operational characteristics.

The problem to which the claimed invention is directed is to eliminate the disadvantages of the above-mentioned analogues while reducing the cost of manufacturing a heat exchanger.

The technical result of the claimed invention is to improve the aerodynamic properties of the recuperator by improving its design and making it even more compact, as well as simplifying the process of cleaning it.

This problem is solved in that the recuperator of the polymer powder coating chamber, comprising a housing made of two parts - cylindrical and cone-shaped, fan motor, fan, duct and hopper, according to the claimed technical solution, the fan motor is located in the upper part of the housing above the fan and facing output shaft with the formation of a fanless joint with the fan, the fan faces the duct with an inlet pipe also with the formation of a kneeless joint, at In the duct located between the fan and the cylindrical part, an inlet is made, which at the same time is the outlet of the said chamber.

In addition, the fan motor housing and the hopper, which is removable, can be made of aluminum.

Below on the graphic materials one of the embodiments of the claimed invention is schematically presented, in no way limiting all possible ways of its execution.

In Fig.1 - the main view of the recuperator.

Figure 2 is a rear view of the recuperator.

In figures 1 and 2:

1 - housing

2 - cylindrical part,

3 - conical part,

4 - fan motor,

5 - fan

6 - duct

7 - hopper

8 - inlet,

9 - filter recuperator.

As can be seen from the graphic materials, the recuperator of the polymer powder coating chamber contains a housing (1), cylindrical (2) and conical (3) parts, as well as a fan motor (4), a fan (5), an air duct (6), a hopper (7 )

The motor (4) of the fan (5) is located in the upper part of the housing above the fan (5) and faces the output shaft (not shown) with the formation of a knee-free joint with the fan (5). The fan (5) faces the duct (6) with an inlet pipe (not shown) also with the formation of a knee-free joint, while an inlet (8) is made in the duct (6), which is also the outlet of the said chamber.

In addition, the housing (1) of the engine (4) of the fan (5) and the hopper (7), which is removable, can be made of aluminum.

The following is one example of the implementation of the claimed invention, in no way limiting all possible options for its implementation.

The exhaust air masses from the polymer powder coating chamber through the inlet (8), which is also the outlet of the chamber, located in the duct (6), due to the vacuum generated by the fan (5), enter the duct (6) located in the heat exchanger housing between the fan (5) and the cylindrical part (2) of the housing (1). The process of separation of air masses with the content of paint particles begins to occur already in the duct (6). Heavier fractions of ink particles are transferred from the cylindrical part (2) to the conical (3) by streams of air masses.

The cleaned air masses from the air duct (6), again due to the vacuum created by the fan (5), enter the filter (9) of the recuperator for further more thorough cleaning, and the heavy fractions of paint particles deposited in the conical (3) part then fall into the hopper (7 )

In view of the implementation of the hopper (7) of the recuperator with the possibility of disconnecting it from the housing (1), i.e. conical part (3), it is removed and cleaned of the particles of paint settled in it.

As can be seen from the presented graphic materials and the given example of the operation of the recuperator, due to the improvement of its design and making it particularly compact, it becomes possible to exclude from its structure air ducts and additional devices that only complicate the operation of the recuperator and worsen its aerodynamic properties, while at the same time reducing the cost of its manufacture and simplify the process of cleaning it.

The tests and the further introduction of these devices into production confirmed the above results, as well as the recuperator's compliance with the most stringent consumer requirements.

Claims (2)

1. The recuperator of the chamber for applying polymer powder coatings, comprising a housing made of two parts - cylindrical and cone-shaped, a fan motor, a fan, an air duct and a hopper, characterized in that the fan motor is located in the upper part of the housing above the fan and faces the output shaft with the formation of a knee-free joint with the fan, the fan is facing the duct inlet also with the formation of a knee-free joint, while in the duct located between the fan and of cylindrical portion, an inlet formed at the same time being the outlet of said chamber. 2. The recuperator according to claim 1, characterized in that the fan motor housing and the hopper, which is removable, are made of aluminum.

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