CN219282060U

CN219282060U - Cooling water pump for engine

Info

Publication number: CN219282060U
Application number: CN202320752084.9U
Authority: CN
Inventors: 郁明胜; 陈贵兵; 陈勇
Original assignee: Dongchai Jiangsu Power Technology Co ltd
Current assignee: Dongchai Jiangsu Power Technology Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-06-30
Anticipated expiration: 2033-04-07

Abstract

The utility model discloses a cooling water pump for an engine, which comprises a pump shell, a rotating shaft and an impeller, wherein the rotating shaft and the impeller are arranged in the pump shell in a penetrating manner, the middle part in the pump shell is a shaft cavity, and two sides of the shaft cavity are respectively provided with a gear cavity and an impeller cavity; the part of the rotating shaft, which is positioned in the shaft cavity, is connected with a bearing, and the outside of the bearing is wrapped with a spiral cooling pipe; an impeller is sleeved at the end part of the rotating shaft, which is positioned in the impeller cavity; the impeller comprises a wheel disc, a wheel hub with a key slot is arranged in the center of the wheel disc, the key slot is matched with the connecting key, primary blades are uniformly arranged on the wheel disc in the circumferential direction by taking the wheel hub as the center, and a plurality of secondary blades are uniformly arranged between two adjacent primary blades and close to the edge of the wheel disc; the end part of the impeller cavity is also provided with an end cover with a water outlet pipe, and the end cover is detachably connected with the end part of the impeller cavity; the bearing is provided with the cooling pipe, so that the continuous working time and the service life of the water pump can be effectively prolonged.

Description

Cooling water pump for engine

Technical Field

The utility model relates to the field of automobile accessories, in particular to a cooling water pump for an engine.

Background

The engine cooling water pump drives the water pump bearing and the impeller to rotate through the belt pulley or the gear, the cooling liquid in the water pump is driven by the impeller to rotate together, and is thrown to the edge of the water pump shell under the action of centrifugal force, and meanwhile, certain pressure is generated, and then the cooling liquid flows out of the water outlet channel or the water pipe. The center of the impeller is thrown out to reduce the pressure, and the cooling liquid in the water tank is sucked into the impeller through the water pipe under the action of the pressure difference between the inlet of the water pump and the center of the impeller, so that the reciprocating circulation of the cooling liquid is realized.

CN209414199U discloses an engine cooling water pump, this patent can effectually control the flow size of coolant liquid in getting into the pump body through setting up flow control subassembly at the water inlet, but this patent has following problem with most current water pumps:

first: the impeller in the water pump is difficult to clean and replace;

second,: because the blades are large, the blades are easy to damage when the impeller rotates at a high speed, and the centrifugal efficiency of the impeller is low;

third,: the bearing can generate heat after long-time work, and heat can not be emitted outside the pump shell again, can influence the continuous operation time of the water pump, can also influence the life of water pump simultaneously.

Disclosure of Invention

The utility model aims to provide a cooling water pump for an engine.

The innovation point of the utility model is that: the disassembly and the cleaning are convenient, and the centrifugal efficiency of the impeller is high; the bearing is provided with the cooling pipe, so that the continuous working time and the service life of the water pump can be effectively prolonged.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the cooling water pump for the engine comprises a pump shell, a rotating shaft and an impeller, wherein the rotating shaft and the impeller are arranged in the pump shell in a penetrating manner, a shaft cavity is formed in the middle of the pump shell, and a gear cavity and an impeller cavity are respectively formed in two sides of the shaft cavity; the part of the rotating shaft, which is positioned in the shaft cavity, is connected with a bearing, and the outside of the bearing is wrapped with a spiral cooling pipe; an impeller is sleeved at the end part of the rotating shaft, which is positioned in the impeller cavity; a connecting key is axially arranged on the part, close to the outer wall of the end part, of the rotating shaft, which is positioned in the impeller cavity; the impeller comprises a wheel disc, a wheel hub with a key slot is arranged in the center of the wheel disc, the key slot is matched with the connecting key, primary blades are uniformly arranged on the wheel disc in the circumferential direction by taking the wheel hub as the center, and a plurality of secondary blades are uniformly arranged between two adjacent primary blades and close to the edge of the wheel disc; the impeller is arranged at the end part of the rotating shaft in a penetrating way and is fixedly connected with the fastening screw through the threaded sleeve; the end part of the impeller cavity is also provided with an end cover with a water outlet pipe, and the end cover is detachably connected with the end part of the impeller cavity.

Further, an outward plug-in ring is arranged on one side, close to the shaft cavity, of the connecting key along the circumferential direction of the rotating shaft, and a plurality of plug-in blind holes are uniformly formed in the plug-in ring along the circumferential direction; the end face of one side of the hub is provided with a plug-in post matched with the plug-in blind hole along the circumferential direction, and the plug-in post is inserted into the plug-in blind hole.

Further, the part of the rotating shaft positioned in the gear cavity is connected with the bevel gear.

Further, a water inlet pipe is further arranged on the impeller cavity, and a liquid inlet end of the cooling pipe is communicated with the impeller cavity.

Further, the end cover is detachably connected with the end part of the impeller cavity through bolts.

Further, the primary blade and the secondary blade are arc-shaped, and the curvature of the secondary blade is larger than that of the primary blade; the number of the first-stage blades is 4-6; one side between the first-stage blades, which is close to the hub, is provided with annular reinforcing ribs, the number of the second-stage blades between two adjacent first-stage blades is 4-6, and the arc length of the second-stage blades is 1/5-1/4 of the arc length of the first-stage blades.

The beneficial effects of the utility model are as follows:

first: the end cover is connected with the impeller cavity through bolts, the impeller is connected with the rotating shaft through the connecting key in a matched mode with the key groove, and the disassembly, cleaning and maintenance are convenient.

Second,: annular reinforcing ribs are arranged between the first-stage blades, so that the strength of the blades can be effectively improved.

Third,: the arc-shaped primary blades and the secondary blades are arranged, the number of the primary blades is small, the blades are large, when the impeller rotates, the primary blades apply force to the water body to drive the water body to rotate at an initial speed, the secondary blades are arranged at the edge of the wheel disc, the number of the secondary blades is large, the blades are small, and after the secondary blades are contacted with the water body with a certain initial speed, the radial speed of the water body along the wheel disc is improved, the water outlet pressure is improved, and the centrifugal pump efficiency is improved.

Fourth,: the threaded cooling pipe is arranged outside the bearing, the bearing is cooled by using the cooling liquid in the impeller cavity, the continuous working time of the water pump is effectively prolonged, and the service life of the water pump is prolonged.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a top view of the impeller.

Fig. 3 is an enlarged view of a portion a in fig. 1.

In the figure: 10 is pump housing, 11 is axle cavity, 12 is gear cavity, 13 is impeller cavity, 13.1 is inlet tube, 20 is pivot, 21 is connecting key, 22 is insert ring, 23 is insert blind hole, 30 is impeller, 31 is rim plate, 32 is hub, 33 is insert column, 34 is primary blade, 35 is secondary blade, 36 is reinforcing rib, 40 is bearing, 41 is cooling tube, 41.1 is liquid inlet end, 41.2 is liquid outlet end, 43 is thread bush, 44 is fastening screw, 50 is end cover, 51 is bolt, 60 is helical gear.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

the cooling water pump for the engine comprises a pump shell 10, a rotating shaft 20 and an impeller 30, wherein the rotating shaft 20 and the impeller 30 are arranged in the pump shell 10 in a penetrating manner, a shaft cavity 11 is formed in the middle of the pump shell 10, and a gear cavity 12 and an impeller cavity 13 are respectively formed in two sides of the shaft cavity 11; the part of the rotating shaft 20, which is positioned in the shaft cavity 11, is connected with a bearing 40, and a spiral cooling pipe 41 is wrapped outside the bearing 40; an impeller 30 is sleeved at the end part of the rotating shaft 20, which is positioned in the impeller cavity 13; the part of the rotating shaft 20, which is positioned in the impeller cavity 13, is close to the outer wall of the end part, and a connecting key 21 is axially arranged; the impeller 30 comprises a wheel disc 31, a hub 32 with a key groove is arranged in the center of the wheel disc 31, the key groove is matched with the connecting key 21, primary blades 34 are uniformly arranged on one side surface of the wheel disc 31 in the circumferential direction by taking the hub 32 as the center, and a plurality of secondary blades 35 are also uniformly arranged between two adjacent primary blades 34 and close to the edge of the wheel disc 31; the impeller 30 is arranged at the end part of the rotating shaft 20 in a penetrating way and is fixedly connected with the fastening screw 4 through the thread bush 43; the end part of the impeller cavity 13 is also provided with an end cover 50 with a water outlet pipe, and the end cover 50 is detachably connected with the end part of the impeller cavity 13.

Further, the wheel disc 31, the hub 32, the plug-in post 33, the primary blade 34 and the secondary blade 35 are integrally formed.

Further, an outward plug ring 22 is further arranged on one side of the connecting key 21, which is close to the shaft cavity 11, along the circumferential direction of the rotating shaft 20, and a plurality of plug blind holes 23 are uniformly formed in the plug ring 22 along the circumferential direction; the end face of one side of the hub 32 is provided with a plug-in post 33 matched with the plug-in blind hole 23 along the circumferential direction, and the plug-in post 33 is inserted into the plug-in blind hole 23.

Further, when the impeller 30 is installed, the key groove is aligned with the connecting key 21, the plug-in post 33 is aligned with the plug-in blind hole 23 for insertion, and then the plug-in post is fixed by the threaded sleeve 43 and the fastening screw 44, so that the impeller 30 can be conveniently pulled out for cleaning, maintenance and replacement by detaching the fastening screw 44 and the threaded sleeve 43.

Further, a part of the end of the rotating shaft 20 located in the gear cavity 13 is connected with the bevel gear 60.

Further, the impeller cavity 13 is further provided with a water inlet pipe 13.1, the liquid inlet end 41.1 of the cooling pipe 41 is communicated with the impeller cavity 13, the liquid outlet end 41.2 of the cooling pipe 41 can be connected with a water tank, and then cooling liquid flows in the spiral cooling pipe 41 to take away heat on the bearing 40.

Further, the end cap 50 is detachably connected to the end of the impeller chamber 13 by bolts 51.

Further, the primary blade 34 and the secondary blade 35 are both arc-shaped, and the curvature of the secondary blade 35 is greater than that of the primary blade 34; the number of the primary blades 34 is 4-6; annular reinforcing ribs 36 are arranged on one side, close to the hub 32, between the primary blades 34, the number of the secondary blades 35 between two adjacent primary blades 34 is 4-6, and the arc length of each secondary blade 35 is 1/5-1/4 of the arc length of each primary blade 34.

Further, provision of the reinforcing ribs 36 can enhance the strength of the primary blade 34.

Further, the number of the primary blades 34 is small, the blades are large, when the impeller rotates, the primary blades 34 apply force to the water body to drive the water body to rotate at an initial speed, the secondary blades 35 are arranged at the edge of the wheel disc 31, the number of the secondary blades is large, the blades are small, the curvature is large, after the secondary blades 35 are contacted with the water body with a certain initial speed, the radial speed of the water body along the wheel disc 31 is increased, the water outlet pressure is increased, and the centrifugal efficiency is improved.

The described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims

1. The cooling water pump for the engine comprises a pump shell (10), a rotating shaft (20) and an impeller (30), wherein the rotating shaft (20) and the impeller (30) are arranged in the pump shell (10) in a penetrating mode, a shaft cavity (11) is formed in the middle of the pump shell (10), and a gear cavity (12) and an impeller cavity (13) are respectively formed in two sides of the shaft cavity (11); the method is characterized in that: the part of the rotating shaft (20) positioned in the shaft cavity (11) is connected with a bearing (40), and a spiral cooling pipe (41) is wrapped outside the bearing (40); an impeller (30) is sleeved at the end part of the rotating shaft (20) positioned in the impeller cavity (13); a connecting key (21) is axially arranged on the part, close to the outer wall of the end part, of the rotating shaft (20) positioned in the impeller cavity (13); the impeller (30) comprises a wheel disc (31), a hub (32) with a key groove is arranged at the center of the wheel disc (31), the key groove is matched with the connecting key (21), primary blades (34) are uniformly arranged on one side surface of the wheel disc (31) in the circumferential direction by taking the hub (32) as the center, and a plurality of secondary blades (35) are also uniformly arranged between two adjacent primary blades (34) and close to the edge of the wheel disc (31); the impeller (30) is penetrated through the end part of the rotating shaft (20) and is fixedly connected with the fastening screw (4) through the thread sleeve (43); the end part of the impeller cavity (13) is also provided with an end cover (50) with a water outlet pipe, and the end cover (50) is detachably connected with the end part of the impeller cavity (13).

2. The cooling water pump for an engine according to claim 1, wherein: one side of the connecting key (21) close to the shaft cavity (11) is provided with an outward inserting ring (22) along the circumferential direction of the rotating shaft (20), and a plurality of inserting blind holes (23) are uniformly formed in the inserting ring (22) along the circumferential direction; the hub is characterized in that a plug-in post (33) matched with the plug-in blind hole (23) is arranged on one side end surface of the hub (32) along the circumferential direction, and the plug-in post (33) is inserted into the plug-in blind hole (23).

3. The cooling water pump for an engine according to claim 1, wherein: the part of the end part of the rotating shaft (20) positioned in the gear cavity (12) is connected with the bevel gear (60).

4. The cooling water pump for an engine according to claim 1, wherein: the impeller cavity (13) is further provided with a water inlet pipe (13.1), and a liquid inlet end (41.1) of the cooling pipe (41) is communicated with the impeller cavity (13).

5. The cooling water pump for an engine according to claim 1, wherein: the end cover (50) is detachably connected with the end part of the impeller cavity (13) through bolts (51).

6. The cooling water pump for an engine according to claim 1, wherein: the primary blade (34) and the secondary blade (35) are arc-shaped, and the curvature of the secondary blade (35) is larger than that of the primary blade (34); the number of the primary blades (34) is 4-6; annular reinforcing ribs (36) are arranged on one side, close to the hub (32), between the first-stage blades (34), the number of the second-stage blades (35) between two adjacent first-stage blades (34) is 4-6, and the arc length of each second-stage blade (35) is 1/5-1/4 of the arc length of each first-stage blade (34).