CN106438454A - Energy-saving automobile engine cooling water pump - Google Patents

Abstract

The invention relates to the technical field of automobile engine cooling water pumps, in particular to an energy-saving automobile engine cooling water pump. The energy-saving automobile engine cooling water pump comprises a pump case, and the pump case is provided with a bearing seat, a water seal seat, a spiral flow channel, a water leakage hole, an installation hole and a sealing groove; and a shaft connection bearing is installed on the bearing seat of the pump case, a transmission flange plate is installed on a journal at the left end of the shaft connection bearing, a water seal is installed in the middle of a journal at the right end of the shaft connection bearing and on the water seal seat of the pump case, a screw hole is formed in the end face of the journal at the right end of the shaft connection bearing, an impeller is installed on the journal at the right end, and blades of the impeller are located on one side of a water inlet of the impeller. According to the energy-saving automobile engine cooling water pump, the problems that existing automobile engine cooling water pumps are high in noise, low in work efficiency and large in power loss are solved.

Description

Energy-saving automobile engine cooling water pump

technical field

The invention relates to the technical field of automobile engine cooling water pumps, in particular to an energy-saving automobile engine cooling water pump.

Background technique

In the prior art, there are mainly two ways of water intake to the automobile engine cooling water pump: one is that the water inlet pipe is provided on the side of the pump body, and the water enters the annular water suction chamber from the side, and then enters the impeller. The other is that the water enters the impeller directly from the body. At this time, the water seal is set in the high pressure area on the other side of the impeller water inlet. At present, the cooling water pumps of automobile engines, especially the engine cooling water pumps of passenger cars, are mostly used. One method, and most of the impellers are open impellers that are stamped and processed by steel plates; the problems in the prior art automotive engine cooling water pumps are: 1. The water that directly enters the impeller from the body directly impacts the joint between the shaft-connected bearing and the impeller. The end face produces vortex belts and cavitation phenomena, the noise of the cooling water pump is large, the flow velocity resistance is large, and the hydraulic loss is large; 2. Due to the inherent characteristics of the steel plate stamping process, the gap at the turning point of the blade makes the water inlet low pressure The high-pressure zone of the water seal chamber on the other side communicates with the high-pressure zone of the water seal chamber on the other side, causing part of the water to flow back and generate vortex phenomena. The noise of the cooling water pump is large, the power loss is large, and the work efficiency is low.

Contents of the invention

The object of the present invention is to solve the problems of high noise, low working efficiency and large power loss in the existing automobile engine cooling water pump, so as to provide an energy-saving automobile engine cooling water pump.

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

An energy-saving automobile engine cooling water pump, which includes a pump casing, and the pump casing is respectively provided with a bearing position, a water seal position, a spiral flow channel, a water leakage hole, an installation hole and a sealing groove;

A shaft-connected bearing is installed at the bearing position of the pump casing. A transmission flange is installed on the left end journal of the shaft-connected bearing. A water seal is installed at the middle of the right-end journal of the shaft-connected bearing and the water seal position of the pump casing. The end face of the right end journal of the bearing is provided with a screw hole, and the right end journal is equipped with an impeller, and the blade on the impeller is on the side of the water inlet of the impeller.

Further, a diversion cone is installed at the water inlet of the impeller, and the large end of the diversion cone is provided with a stud, which is installed in the screw hole on the end face of the shaft journal at the right end of the shaft-connected bearing, and the small end of the diversion cone It is extended and installed to the water inlet of the impeller. There is no gap on the connecting plate of the blade to install a circular back plate. The outer diameter of the circular back plate is equal to the outer diameter of the impeller. The diameter of the hole is equal to the diameter of the impeller inlet.

Further, the impeller is an open impeller formed by stamping a steel plate.

Further, the diversion cone is composed of a stud and a cone, the stud of the diversion cone is installed in the end face screw hole of the right end journal of the shaft-connected bearing, and the small end of the diversion cone is extended to the impeller water intake.

Further, the outer diameter of the annular back plate is equal to the outer diameter of the impeller, the diameter of the inner hole is the same as the diameter of the water inlet of the impeller, and the annular back plate is installed on the connecting web of the blade without gaps.

Beneficial effects of the present invention:

Compared with the existing automobile engine cooling water pump, the present invention installs a ring-shaped back plate without gaps on the connecting web of the impeller to block the water in the high-pressure area of the water outlet from returning to the low-pressure area of the water inlet, so that the open impeller becomes A semi-open impeller reduces water flow loss and improves hydraulic efficiency; the present invention installs a diversion cone on the end surface where the impeller is connected to the shaft journal at the right end of the shaft-connected bearing at the water inlet of the impeller, which can eliminate the impact loss of water inflow and reduce the Water flow noise reduces water flow power loss; after testing, the invention improves the efficiency of the water pump by 25%; the invention has compact structure, remarkable effect, low cost and wide application range; the invention better solves the problem of existing automobile engine cooling The water pump has the problems of high noise, low efficiency and high consumption.

Description of drawings

Fig. 1 is a structural front view of the present invention;

Fig. 2 is the front view of the impeller structure of the present invention;

Fig. 3 is a sectional view of the impeller structure of the present invention;

Fig. 4 is the front view of the annular backboard of the present invention;

Fig. 5 is the front view of the guide cone of the present invention;

In the figure: 1-transmission flange, 2-pump casing, 3-shaft connecting bearing, 4-bearing position, 5-water seal, 6-circular back plate, 7-connecting web, 8-spiral flow channel , 9-installation hole, 10-seal groove, 11-blade, 12-impeller, 13-guiding cone, 14-impeller water inlet, 15-screw hole, 16-inner hole, 17-leakage hole, 18-water Seal, 19-right end journal. 20—left end journal, 21—screw, 22—cone.

detailed description

Embodiment: (see Fig. 1 for details) An energy-saving automobile engine cooling water pump has a pump casing 2, and the pump casing 2 is respectively provided with a bearing position 4, a water seal position 18, a spiral flow channel 8, a water leakage hole 17 and a mounting hole 9. Sealing groove 10; the shaft-connected bearing 3 is installed at the bearing position 4 of the pump casing 2, the left end journal 20 of the shaft-connected bearing 3 is installed with a transmission flange 1, the middle part of the right-end journal 19 of the shaft-connected bearing 3 and A water seal 5 is installed at the water seal position 18 of the pump casing 2, and a screw hole 15 is provided on the end face of the right end journal 19 of the shaft-connected bearing 3, and the right end journal 19 is equipped with an impeller 12, which is formed by stamping a steel plate The open impeller, the blade 11 on the impeller 12 is on the side of the water inlet 14 of the impeller, and it is characterized in that: the water inlet of the impeller is equipped with a diversion cone 13, and the large end of the diversion cone 13 is provided with a stud 21. Installed in the right end journal 19 of the shaft-connected bearing 3 in the end face screw hole 15, the small end of the diversion cone 13 is extended and installed to the water inlet 14 of the impeller 12, and protrudes 10 mm, and the connecting web 7 of the blade 11 Install an annular back plate 6 with a thickness of 1 mm on the top without clearance, the outer diameter of the annular back plate 6 is equal to the outer diameter of the impeller 12, and an inner hole 16 is arranged in the middle of the annular back plate 6, and the diameter of the inner hole 16 is Equal with impeller 12 inlet diameters.

The diversion cone 13 of the present invention is composed of a stud 21 and a cone 22 (see Figure 5 for details). In the hole 15, the small end of the diversion cone 13 is extended and installed to the water inlet 14 of the impeller, and protrudes 10 mm.

The outer diameter of the annular back plate 6 of the present invention is equal to the outer diameter of the impeller 12, the diameter of the inner hole 16 is the same as the diameter of the impeller water inlet 14, and the thickness of the annular back plate 6 is 1 mm (see Figure 2 and Figure 3 for details , Figure 4), the annular back plate 6 is installed on the connecting web 7 of the blade 11 without gaps.

Claims (5)

1. An energy-saving automobile engine cooling water pump, which includes a pump casing (2), and the pump casing (2) is respectively equipped with a bearing position (4), a water seal position (18), a spiral flow channel (8), a water leakage hole (17), mounting hole (9) and sealing groove (10); It is characterized in that a shaft-connected bearing (3) is installed at the bearing position (4) of the pump casing (2), and a drive flange (1) is installed on the left end journal (20) of the shaft-connected bearing (3). A water seal (5) is installed in the middle of the right end journal (19) of the bearing (3) and at the water seal position (18) of the pump casing (2), and the end face of the right end journal (19) of the shaft connection bearing (3) Screw holes (15) are provided, and the right end journal (19) is equipped with an impeller (12), and the blade (11) on the impeller (12) is on the side of the impeller water inlet (14). 2. The energy-saving automobile engine cooling water pump according to claim 1, characterized in that: a guide cone (13) is installed at the water inlet of the impeller, and the large end of the guide cone (13) is provided with a screw The column (21) is installed in the screw hole (15) on the right end of the journal (19) of the shaft-connected bearing (3), and the small end of the diversion cone (13) is extended and installed to the water inlet (14) of the impeller (12) ), the connecting web (7) of the blade (11) is installed with an annular back plate (6) without clearance, the outer diameter of the annular back plate (6) is equal to the outer diameter of the impeller (12), and the annular An inner hole (16) is arranged in the middle of the back plate (6), and the diameter of the inner hole (16) is equal to the diameter of the water inlet of the impeller (12). 3. The energy-saving automobile engine cooling water pump according to claim 1, characterized in that: the impeller (12) is an open impeller formed by stamping a steel plate. 4. The energy-saving automobile engine cooling water pump according to claim 1, characterized in that: the diversion cone (13) is composed of a stud (21) and a cone (22), and the diversion cone (13) The stud (21) is installed in the end face screw hole (15) of the right end journal (19) of the shaft-connected bearing (3), and the small end of the diversion cone (13) is extended and installed to the impeller water inlet (14). 5. The energy-saving automobile engine cooling water pump according to claim 1, characterized in that: the outer diameter of the annular back plate (6) is equal to the outer diameter of the impeller (12), and the diameter of the inner hole (16) is the same as that of the impeller The water inlets (14) have the same diameter, and the annular back plate (6) is installed on the connecting web (7) of the blade (11) without gaps.