CN205677830U - A kind of automobile belt pulley vavuum pump - Google Patents

Abstract

The utility model discloses a kind of automobile belt pulley vavuum pump, including the pump housing, it is provided with rotor in the pump housing, four blade grooves are had on rotor, article four, blade groove is distributed in four limits of rotor, between relative two blade grooves parallel, between adjacent two blade grooves vertically, it is designed with blade in four blade grooves, it is provided with bleeding point on the pump housing, gas outlet and drive shaft, it is provided with oil groove in drive shaft, it is provided with bearing shell between drive shaft and the pump housing, bearing shell is provided with bearing shell hole, cross-drilled hole in the respective drive of bearing shell hole, bleeding point is provided with check valve, it is fixed with belt pulley in drive shaft, belt pulley is connected to engine by belt.Offering four blade grooves on vacuum pump rotor of the present utility model, four blade grooves are distributed in four limits of rotor, and it is a little bigger that the length of such blade groove can be tried one's best, and the volume that blade is inswept is bigger, in hgher efficiency；Simultaneously improve runner design, solved Leakage, and the oil sealing between drive shaft and belt pulley can be cancelled, cost-effective.

Description

A kind of belt pulley vacuum pump for automobile

technical field

The utility model relates to an automobile vacuum pump.

Background technique

Most of the vacuum pumps used in automobiles are the power source of the hydraulic brake booster of diesel vehicles. Because the vehicles equipped with gasoline engines use ignition type engines, they can generate higher vacuum pressure in the intake manifold, which can be used for vacuum booster braking systems. Provide sufficient vacuum source, and for vehicles driven by diesel engines, since the engine adopts compression ignition type CI, the same level of vacuum pressure cannot be provided at the intake manifold, so a vacuum pump that provides a vacuum source needs to be installed. Many of the current vacuum pumps are driven by pulleys, and the pulley-driven vacuum pumps have a potential risk of oil leakage in the oil inlet channel due to the high speed.

Utility model content

The purpose of the utility model is to provide an automobile vacuum pump with simple structure and high working efficiency.

The technical scheme of the utility model is as follows: a pulley vacuum pump for automobiles, including a pump body, a rotor is arranged in the pump body, four blade grooves are opened on the rotor, and the four blade grooves are distributed on the four sides of the rotor, parallel to each other between the two blade grooves. , two adjacent vane slots are vertical, four vane slots are equipped with vanes, the pump body is provided with air inlet, air outlet and drive shaft, the drive shaft is provided with an oil groove, and the drive shaft and the pump body are provided with There is a bearing bush, the bearing bush is provided with a bearing bush hole, the bearing bush hole corresponds to the horizontal hole on the drive shaft, the air inlet is provided with a check valve, the drive shaft is fixed with a pulley, the pulley is connected to the engine through a belt, and a cover plate is fixed on the pump body.

The one-way valve is provided with a dust cover.

The rotor of the automotive vacuum pump of the present utility model has four blade grooves, and the four blade grooves are distributed on the four sides of the rotor, relatively parallel between two blade grooves, and vertical between adjacent two blade grooves, so that the length of the blade grooves can be as far as possible When the rotor rotates, the volume swept by the blades is larger and the efficiency is higher; at the same time, the design of the flow channel is improved to solve the problem of oil leakage, and the oil seal between the drive shaft and the pulley can be eliminated, which can save costs .

Description of drawings

Fig. 1 is a structural schematic diagram one of the utility model.

Fig. 2 is the second structural diagram of the utility model.

Fig. 3 is a structural schematic diagram three of the utility model.

Fig. 4 is a structural schematic diagram four of the utility model.

Fig. 5 is a schematic diagram of the flow channel design of the present invention.

FIG. 6 is an enlarged view at point A in FIG. 5 .

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1-4, a pulley vacuum pump for automobiles includes a pump body 1, a rotor 2 is arranged inside the pump body 1, and four blade grooves 21 are opened on the rotor 2, and the four blade grooves 21 are distributed on the four sides of the rotor. The two vane slots are parallel, and the two adjacent vane slots are vertical. There are vanes 3 in the four vane slots. The pump body 1 is provided with an air inlet, an air outlet and a drive shaft 5. There is an oil tank, a bearing bush 9 is arranged between the drive shaft 5 and the pump body 1, the bearing bush 9 is provided with a bearing bush hole 91, and the bearing bush hole 91 corresponds to the horizontal hole 52 on the drive shaft, the air suction port is provided with a check valve 10, and the drive shaft 5 A pulley 6 is fixed, and the pulley 6 is connected to the engine by a belt, and a cover plate 4 is fixed on the pump body 1 . A dustproof cover 14 is arranged on the one-way valve 10 .

The four vane slots are distributed on the four sides of the rotor 2. Two vane slots are parallel to each other, and two adjacent vane slots are vertical. In this way, the length of the vane slots can be as large as possible. When the rotor rotates, the volume swept by the vanes Bigger and more efficient. The drive shaft 5 of the vacuum pump is provided with a pulley 6, the pulley 6 is connected to the engine through a belt, the engine drives the pulley 6, the pulley 6 drives the rotor 2, the rotor 2 drives the blade 3 to rotate in the inner cavity of the pump body 1, and the vacuum pump is driven by a belt transmission. The driving efficiency is high, the mechanical wear is small, and the service life and stability of the entire vacuum pump are improved. The cover plate 4 is provided with five pieces of reinforcing ribs 17, which are evenly distributed on the cover plate to reinforce the whole vacuum pump. A bearing bush 9 is arranged between the driving shaft 5 and the pump body 1 , and the bearing bush 9 effectively reduces wear between the driving shaft 5 and the pump body 1 . The one-way valve 10 is provided with a dust cover 14 to prevent dust from entering the pump body. As shown in Figure 5 and Figure 6, the oil inlet passage hole 11 is connected to the bearing bush hole 91 of the bearing bush 9, and the bearing bush hole 91 corresponds to the horizontal hole 52 of the drive shaft 5. The horizontal hole 52 enters the oil groove in the center of the drive shaft, then passes through the cover plate from the center of the drive shaft and enters the cavity, and finally enters the pump body 1. The entire vacuum pump has improved flow channel design, thereby solving the oil leakage problem, and the original oil seal between the drive shaft 5 and the belt pulley 6 can be canceled, which can save costs.

Claims (2)

1. an automobile belt pulley vavuum pump, it is characterised in that include the pump housing (1), be provided with rotor (2) in the pump housing (1), turns Having four blade grooves (21) on son (2), four blade grooves (21) are distributed in four limits of rotor, flat between relative two blade grooves OK, vertical between adjacent two blade grooves, it is designed with blade (3) in four blade grooves, the pump housing is provided with bleeding point on (1), goes out Gas port and drive shaft (5), be provided with oil groove, be provided with bearing shell (9) between drive shaft (5) and the pump housing (1) in drive shaft (5), Bearing shell (9) is provided with bearing shell hole (91), and the cross-drilled hole (52) in bearing shell hole (91) respective drive, bleeding point is provided with check valve (10), drive shaft (5) being fixed with belt pulley (6), belt pulley (6) is connected to engine by belt, and the pump housing is fixed with on (1) Cover plate (4).

2. a kind of automobile belt pulley vavuum pump according to claim 1, it is characterised in that on described check valve (10) It is provided with dirt-proof boot (14).