JPH05277395A - Explosion-proof type crushing device - Google Patents

Abstract

PURPOSE:To save manpower and to efficiently use energy without waste in equipment in a explosion-proof type crushing device made by connecting an air intake fan to a crusher executing crushing action in a steam atmosphere and connecting an air exhaust fan with a dust collector to the discharge port of the crusher. CONSTITUTION:A heater 16 is interposed and provided between the dust collectors 13, 14 and the air outlet fan 15 and a branched discharge passage 24 of the air exhaust fan 15 from the heater 16 is connected to the air intake fan 12. As the exhaust air heated by the heater 16 is returned to the air intake fan 12, it is unnecessary to heat the intake air to the crusher 11 or the heater is made small sized. And the quantity of the exhaust air discharged from the air exhaust fan is reduces in proportion to the quantity of the returned exhaust air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to oversized garbage (TV,
This is a device for crushing washing machines, refrigerators, furniture, bottles, empty cans, etc. in an explosion-proof state.

[0002]

2. Description of the Related Art As shown in FIG. 2, this type of crushing apparatus has a supply fan 2 connected to a crusher 1 and a cyclone 3 and a wet dust collector 4 at the exhaust port of the crusher 1. The exhaust fan 5 is connected through the exhaust fan 5, and the crushed object a is crushed in a steam atmosphere in which steam is sent into the crusher 1.

At this time, heated air is introduced from the air supply fan 2 through the heater 7 for the purpose of preventing the temperature drop in the crusher 1 and / or preventing the discharge of water vapor from the inlet / outlet.
Further, the exhaust gas is collected by the cyclone 3 and the wet dust collector 4 and then discharged from the exhaust fan 5 to the outside air.

Since a large amount of water vapor is contained in the exhaust gas at the time of its discharge, the water vapor turns into white smoke due to the temperature drop after the gas is discharged from the exhaust fan 5. The amount of white smoke is large, and white smoke near the exhaust fan 5 is aesthetically unfavorable because it is easily mistaken for discharge of dust.

Therefore, conventionally, as shown in FIG. 2, the temperature of the exhaust gas is raised by the heater 6 or is diluted by introducing air to be discharged from the chimney. If the temperature rises during exhaust, the saturated water vapor pressure increases and reaches a high place away from the exhaust fan 5 (chimney) without becoming white smoke and diffuses. Therefore, white smoke is thin and has a wide range, which is aesthetically preferable. Further, when diluted, the amount of water vapor with respect to the amount of exhaust gas is reduced and the whitening temperature is raised, and the same effect is obtained.

However, it is a waste of equipment to heat the supply and exhaust with separate heaters 7 and 6, and it is a waste of energy to heat the exhaust only by preventing white smoke. Further, it is preferable that the introduction of dilution air is small.

Conventionally, in this type of crushing device,
As a technique aiming at effective use of energy, Japanese Patent Laid-Open No.
As described in Japanese Unexamined Patent Publication No. 108062, there is one that returns a part of the exhaust gas to the air supply side.

In view of the above situation, it is an object of the present invention to save the labor of facilities and to effectively use energy.

[0009]

In order to solve the above-mentioned problems, according to the present invention, the exhaust passage from the exhaust heater is branched in the conventionally known crushing device which performs the crushing action in the above-mentioned steam atmosphere. That is, the technology disclosed in the above-mentioned publication is adopted in the configuration in which the air supply fan is connected to the air supply fan, that is, in the exhaust passage.

[0010]

The explosion-proof type crushing device according to the present invention having the above-described structure performs the crushing action in the same manner as the conventional one, and the exhaust gas is heated and discharged.

During this operation, the exhaust gas after heating is returned to the air supply fan, so that it is not necessary to heat the air supply to the crusher, or a small one is sufficient as compared with the conventional air supply heater. . Further, the amount of exhaust gas released from the exhaust fan is reduced by the amount of the exhaust gas returned.

[0012]

EXAMPLE As shown in FIG. 1, an air supply fan 12 is connected to a crusher 11, and air supply 17 forms air curtains 17 and 18 at the entrance and exit of the crusher 11. In the crusher 11, steam b is ejected from three outlets 19a, 19b, 19c, and the ejected steam envelops the crushing portion 11a composed of a rotary blade or the like to form a steam atmosphere, which prevents explosion during the crushing action. Done. Leakage of water vapor is prevented by the air curtains 17 and 18 and the rubber goodwill 20. These also have the function of blocking the temperature.

An object to be crushed a is put into the crusher 11 by an apron conveyor 21, and the object to be crushed a is crushed in the above-mentioned steam atmosphere, and then the discharge chute 22.
It is discharged onto the belt conveyor 23 via the and is sent to the next process.

A cyclone 13 is provided at the exhaust port of the crusher 11,
The wet dust collector 14, the heater 16 and the exhaust fan 15 are connected, and the exhaust fan 15 collects the exhaust gas from the crusher 11 by the cyclone 13 and the wet dust collector 14 and then heats it by the heater 16 to the outside air. Is released. The exhaust passage from the heater 16 to the exhaust fan 15 is branched, and the branch passage 24 is connected to the air supply fan 12. Therefore, the air supply fan 12 sucks in high-temperature air and sends it into the crusher 11. When the temperature of the branch exhaust gas is not sufficient, the heater 7 is provided between the air supply fan 12 and the crusher 11 as in FIG.

The branch amount of the exhaust gas may be controlled by a valve such as a three-way valve, but it may also be controlled by adjusting the capacity of the supply / exhaust fans 12, 15.

[0016]

Since the present invention is constructed as described above and the exhaust gas after heating is returned to the air supply fan, it is not necessary to heat the air supply to the crusher, or the conventional air supply is performed. A small one is sufficient compared to a heater. Therefore, labor saving of equipment can be achieved.

Further, since the amount of exhaust gas is reduced, the energy for raising the temperature and the amount of air for dilution are also reduced, and it becomes easy to take measures against such white smoke.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an embodiment.

FIG. 2 is a schematic view of a conventional example.

[Explanation of symbols]

 1, 11 Crusher 2, 12 Air supply fan 3, 13 Cyclone 4, 14 Wet dust collector 5, 15 Exhaust fan 6, 16 Exhaust heater 7 Air supply heater 17, 18 Air curtain 20 Rubber goodwill 21, 23 Conveyor 24 Branch path

Claims (1)

[Claims] 1. An explosion-proof crusher, comprising a crusher that performs a crushing action in a steam atmosphere, an air supply fan connected to the crusher, and an exhaust fan connected to the exhaust port of the crusher via a dust collector. An explosion-proof crushing device, characterized in that a heater is provided between the fans, and an exhaust passage from the heater to the exhaust fan is branched and connected to the air supply fan.