KR200294252Y1 - vacuum pump structure for a fire engine - Google Patents

Abstract

The present invention relates to a vacuum pump structure for a fire truck, the impeller housing 21 is installed bearing 23 to support the rotating shaft 22 in the lower portion; An elbow 25 having one end connected to one side of the impeller housing 21 and the other end connected to a connection pipe 14 connected to a fire pump 11; An impeller 27 coupled to the rotary shaft 22 inside the impeller housing 21; A cover 28 coupled to an upper portion of the impeller housing 21; A cover plate 29 fixedly installed on an upper surface of the cover 28; The cover 28 was provided with a vacuum pump structure for a fire truck made of a body 30 is provided with a coupling.

Therefore, the impeller 27 is installed to maintain the air gap inside the impeller housing 21 to suck the grease in the fire pump 11 by the rotational force of the impeller 27, the impeller 27 and the impeller housing 21. The vacuum oil is not used in between to prevent environmental pollution, and the vacuum oil can reduce the economic burden of the non-use.

Description

Vacuum pump structure for fire trucks {vacuum pump structure for a fire engine}

The present invention relates to a vacuum pump for a fire truck, and more particularly to a vacuum pump structure for a fire truck without oil.

In general, fire trucks that extinguish fire by waterproofing fire extinguishing water use a pump having a strong discharge pressure to waterproof fire extinguishing water. The pump used in such a fire truck has a very large capacity, and therefore requires a pick-up to inhale extinguishing water when the pump is initially driven.

A vacuum pump is used to suck such a dead object, and when the vibration pump is driven, vacuum oil is supplied for airtightness inside the vacuum pump and lubrication of the rotating part.

1 and 2 are schematic cross-sectional views showing such a conventional fire engine vacuum pump structure and a cross-sectional view taken along line A-A ', wherein such a vacuum pump has four bronze blades 4 being subjected to centrifugal force when the rotor 3 is rotated. Since the wing 4 is drawn outward, air between the case 1 and the rotor 3 is discharged to the outlet 2 in the state in which the blade 4 is in contact with the inner surface of the case 1.

At this time, since the blade 4 is rotated in contact with the inner circumferential surface of the case 1, friction heat is generated between them, and thus cooling and lubrication of the blade 4 and the case 1 are required, and thus, It will supply oil.

The oil supplied into the vacuum pump is discharged to the outside after performing cooling and lubrication, and maintaining the vacuum in the vacuum pump. When the waste oil is discharged, the environment is polluted and the fire pump is operated. There has been a problem that the economic loss is aggravated by the consumption of vacuum oil.

An object of the present invention for solving the above problems is to provide an oil-free vacuum pump structure for a fire pump.

In order to achieve the above object, the present invention fire pump vacuum pump structure, the fire pump vacuum pump structure is connected to the fire pump for suctioning the pick-up, the impeller housing is installed to support the rotating shaft in the lower portion; An elbow having one end connected to one side of the impeller housing and the other end coupled to a connection pipe connected to a fire pump; An impeller coupled to the rotating shaft inside the impeller housing; A cover coupled to the upper part of the impeller housing; A cover plate fixed to the cover upper surface; Characterized in that it consists of a body coupled to the upper cover.

Therefore, the impeller is installed to maintain the air gap inside the impeller housing to suck the grease in the fire pump by the rotational force of the impeller, so that no vacuum oil is used between the impeller and the impeller housing to prevent environmental pollution, vacuum oil is There is an effect that can reduce the economic burden of unused.

1 and 2 is a schematic cross-sectional view showing a conventional fire pump vacuum pump structure and its A-A 'cross-sectional view

Figure 3 is a schematic cross-sectional view showing a state in which the vacuum pump structure for the fire engine of the present invention is installed

Figure 4 is a schematic exploded perspective view showing a vacuum pump structure for the fire truck of the present invention

* Description of the symbols for the main parts of the drawings *

11; Fire pump 20; Vacuum pump

21; Impeller housing 22; Axis of rotation

27; Impeller 28; cover

29; Cover plate 30; body

Specific features and advantages of the present invention will become more apparent from the following description with reference to the accompanying drawings.

Figure 2 is a schematic cross-sectional view showing a state of the vacuum pump structure for fire truck of the present invention, Figure 3 is a schematic exploded perspective view of the vacuum pump structure for fire truck of the present invention, this vacuum pump 20 is connected to the connecting pipe (14) It is connected to the fire pump 11 by the suction pump in the fire pump (11).

Here, the driving wheel 13 of the vacuum pump 20 is engaged with the driving wheel 13 coupled to the driving shaft 12 of the fire pump 11, and the rotating shaft of the vacuum pump 20 is fitted to the driving wheel 24. The 22 is coupled, and the rotary shaft 22 of the vacuum pump 20 is rotated by the driving wheel 13 and the electric wheel 24 when the driving shaft 12 of the fire pump 11 is rotated.

On the other hand, the vacuum pump 20, the impeller housing 21 is provided with a bearing 23 is installed to support the rotating shaft 22 at the lower side, the elbow 25 is coupled to one side of the impeller housing 21, A valve 26 is installed inside the elbow 25, and a connection pipe 14 is connected to an end portion of the elbow 25 and a fire pump 11 so that the inside of the fire pump 11 is opened by the vacuum pump 20. Inhaled.

The rotary shaft 22 is installed inside the impeller housing 21, and the rotary shaft 22 is supported by the bearing 23, and the electric wheel 24 is coupled to the lower portion of the rotary shaft 22. The drive wheel 13 is engaged, and the drive wheel 13 has a fire pump 11 coupled to the drive shaft 12.

The impeller 27 is installed on the rotating shaft 22 inside the impeller housing 21, and the impeller is coupled to the rotating shaft 22 to be rotated together with the rotating shaft 22. (27) A minute gap is maintained between the circumference and the inner circumferential surface of the impeller housing 21.

The cover 28 is coupled to the upper part of the impeller housing 21, and the cover plate 29 is coupled to the cover 28, and the body 30 is disposed on the cover 28 to cover the cover plate 29. Combined.

In the vacuum pump structure for the fire truck of the present invention having such a configuration, when the driving wheel 13 of the fire fighting pump 11 is rotated, the electric wheel 24 and the rotating shaft 22 are rotated, and the impeller 27 is rotated, so that the high speed The inside of the fire pump 11 is vacuumed through the connecting pipe 14 by the impeller 27 which is rotated to suck the pick-up material for initial operation of the fire pump 11.

Here, the impeller 27 installed inside the impeller housing 21 to vacuum the inside of the fire pump 11 is not installed in contact with the impeller housing 21 but is formed to form an air gap with the inner circumferential surface of the impeller housing 21. have.

(As the characteristic of the impeller 27, if the circumference of the impeller 27 is installed in close contact with the inner circumferential surface of the impeller housing 21, the operation thereof is impossible.

Therefore, no frictional heat is generated between the circumference of the impeller 27 and the inner circumferential surface of the impeller housing 21, thus eliminating the need to supply oil therebetween. Therefore, the oil supplied in the vacuum pump is cooled and lubricated, and the vacuum in the vacuum pump is The conventional problem that is discharged to the outside after performing the role of maintenance and the like is solved.

Therefore, the vacuum pump structure of the fire truck of the present invention does not require oil, and thus, waste oil is not generated, and thus, conventional problems such as environmental pollution and weight loss due to purchase of oil are solved.

According to the vacuum pump structure for a fire truck according to the present invention as described above, the impeller 27 is installed so as to maintain a void in the impeller housing 21 to meet the grease in the fire pump 11 by the rotational force of the impeller 27 Since the suction, the vacuum oil is not used between the impeller 27 and the impeller housing 21 to prevent environmental pollution, it is possible to reduce the economic burden of the vacuum oil is not used.

Claims (1)

In the vacuum pump structure for the fire truck is connected to the fire pump to suck the cargo, An impeller housing 21 in which a bearing 23 is installed to support the rotating shaft 22 at a lower portion thereof; An elbow 25 having one end connected to one side of the impeller housing 21 and the other end connected to a connection pipe 14 connected to a fire pump 11; An impeller 27 coupled to the rotary shaft 22 inside the impeller housing 21; A cover 28 coupled to an upper portion of the impeller housing 21; A cover plate 29 fixedly installed on an upper surface of the cover 28; Fire pump vacuum pump structure, characterized in that made of a body 30 is coupled to the upper cover 28.