CN110848169A

CN110848169A - High stability cooling water pump

Info

Publication number: CN110848169A
Application number: CN201911318046.7A
Authority: CN
Inventors: 王华生
Original assignee: Yancheng Haina Beijing Great Automotive Components Co Ltd
Current assignee: Yancheng Haina Beijing Great Automotive Components Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-02-28
Anticipated expiration: 2039-12-19

Abstract

The invention discloses a high-stability cooling water pump, which relates to the technical field of water pumps, when an impeller is installed, firstly, the whole impeller is sleeved at one end of a shaft connecting bearing, one side of the impeller, which is provided with a fixing ring, faces outwards, then, a fixing sleeve is sleeved at the end of the shaft connecting bearing, in the sleeving process, the screw thread part of the fixing sleeve is in threaded connection with the shaft connecting bearing, meanwhile, an accommodating cavity is gradually sleeved on the fixing ring until the fixing ring is completely inserted into the accommodating cavity, in the rotating process of the impeller, a fastening column in the fixing ring slides outwards under the action of centrifugal force, so that a rubber gasket of the fastening column is abutted and applies certain pressure to the rubber gasket, and the friction force of the rubber gasket is large, so that the relative displacement is not easy to generate between the fixing sleeve and the fixing ring, and the loosening phenomenon of the whole impeller is ensured, the whole water pump can be stably operated for a long time, and the safety is high.

Description

High stability cooling water pump

Technical Field

The invention relates to the technical field of water pumps, in particular to a high-stability cooling water pump.

Background

The cylinder body of the automobile engine is provided with a plurality of water channels for cooling water circulation, the water channels are connected with a water tank arranged in the front of the automobile through water pipes to form a large water circulation system, and a cooling water pump is positioned at an upper water outlet of the engine and is driven by the engine through a belt pulley to pump hot water out of the water channels of the engine cylinder body and pump cold water into the water channels. A thermostat is arranged beside the water pump, when the automobile is started (namely, the automobile is cooled), the thermostat is not opened, so that cooling water does not pass through the water tank and only circulates in the engine, when the temperature of the engine reaches over 95 ℃, the thermostat is opened, hot water in the engine is pumped into the water tank, and cold air in the process of advancing the automobile blows through the water tank to take away heat. The final purpose is to keep the temperature of the engine in an ideal state all the time and avoid damage caused by overheating.

The engine drives the water pump bearing and the impeller to rotate through the belt pulley, the cooling liquid in the water pump is driven by the impeller to rotate together, is thrown to the edge of the water pump shell under the action of centrifugal force, generates certain pressure at the same time, and then flows out of the water outlet channel or the water pipe. The center of the impeller is positioned at the position where the cooling liquid is thrown out, the pressure is reduced, 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.

In the water pump, the impeller and the driving shaft are generally only compressed and fixed through the double-head screw and the locking nut, and the impeller is easy to loosen in the working state that the impeller is told to rotate for a long time, so that long-term stable operation cannot be guaranteed, and the safety is poor.

Disclosure of Invention

The technical problem to be solved by the invention is that in a water pump, an impeller and a driving shaft are generally compressed and fixed only through a double-head screw and a locking nut, and the impeller is easy to loosen under the working state that the impeller rotates for a long time in a matching way, so that the long-term stable operation cannot be ensured, and the safety is poor.

In order to solve the technical problems, the invention provides a high-stability cooling water pump which comprises a pump body, wherein a shaft connecting bearing is in interference fit in the pump body, a flange and an impeller are respectively arranged at two ends of the shaft connecting bearing, the high-stability cooling water pump also comprises a mounting device for mounting the impeller on the shaft connecting bearing, the mounting device comprises a fixed sleeve which is in threaded connection with one end, close to the impeller, of the shaft connecting bearing, a fixed ring inserted into the fixed sleeve is coaxially arranged at one end, away from the flange, of the impeller, a threaded portion in threaded connection with the shaft connecting bearing is arranged on the inner wall, away from one end of the fixed sleeve, away from the fixed ring, a containing cavity for inserting the fixed ring is arranged at one end, away from the threaded portion, of the fixed sleeve, a rubber pad which is in contact with.

The technical effects are as follows: when the impeller is installed, firstly, the whole impeller is sleeved at one end of the shaft connecting bearing, the side of the impeller provided with the fixing ring faces outwards, then, the fixing sleeve is sleeved at the end of the shaft connecting bearing, in the process of sleeving, the threaded part of the fixed sleeve is in threaded connection with the shaft connecting bearing, the containing cavity is gradually sleeved on the fixed ring at the same time until the fixed ring is completely inserted into the containing cavity, the fastening column in the fixed ring slides outwards under the action of centrifugal force in the process of rotating the impeller, so the rubber pads of the fastening columns are abutted and exert certain pressure on the fastening columns, the friction force of the rubber pads is larger, therefore, relative displacement is not easy to generate between the fixed sleeve and the fixed ring, the phenomenon that the whole impeller is not easy to loosen is guaranteed, the whole water pump can stably operate for a long time, and the safety is high.

The technical scheme of the invention is further defined as follows: the fastening post includes that radial slip connects in the inside cylinder of solid fixed ring, and the cylinder leans on solid fixed ring outer one end to be fixed with the point portion inconsistent with the rubber pad, and sets up to elastic connection between cylinder and the solid fixed ring, and the point portion flushes with solid fixed ring's outer wall under normal condition.

Furthermore, an extension spring is connected between the column body and the fixing ring.

The high-stability cooling water pump is characterized in that the fastening columns are arranged at intervals along the circumferential direction of the fixing ring.

The high-stability cooling water pump is characterized in that the fastening columns are arranged at equal intervals along the circumferential direction of the fixing ring.

The high stability cooling water pump, the height that holds the chamber sets up to be greater than solid fixed ring's height.

The high-stability cooling water pump is characterized in that one end of the fixing sleeve, which is provided with the containing cavity, is provided with a rubber ring which is inconsistent with the impeller.

The invention has the beneficial effects that:

(1) according to the fixing sleeve, the fastening column is provided with the tip part, so that when the fastening column is abutted to the rubber pad, the fastening column can be partially embedded into the rubber pad through the elasticity of the rubber pad, the fastening column and the rubber pad can be connected more stably, relative displacement between the fixing sleeve and the fixing ring is less prone to generation, and the tip part is flush with the outside, so that the fixing sleeve is more convenient to install;

(2) according to the invention, the positions and the number of the fastening columns are set, so that all the fastening columns are uniformly arranged on the fixing ring, on one hand, different parts of the rubber pad can be simultaneously collided through the plurality of fastening columns, the connection tightness between the rubber pad and the fixing ring is further enhanced, on the other hand, the collision effect is ensured, and simultaneously, the structure of the whole fixing ring is more reasonable, so that the fixing ring is more practical when in use;

(3) according to the invention, the accommodating cavity and the fixing ring are arranged in height, so that the fixing ring can be completely embedded into the accommodating cavity, the end part of the fixing sleeve is also abutted against the impeller, the fixing effect of the fixing sleeve on the whole impeller is further enhanced, the fixing effect of the end part of the fixing sleeve on the impeller is further enhanced by the arrangement of the rubber ring, the impeller is not easy to loosen after being used for a long time, and the stability and the practicability of the whole water pump are improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the locking collar of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a schematic structural view of the retaining ring of the present invention.

Wherein: 1. a pump body; 2. a shaft coupling bearing; 3. a flange; 4. an impeller; 5. a mounting device; 51. fixing the sleeve; 511. a threaded portion; 512. an accommodating chamber; 513. a rubber pad; 52. a fixing ring; 53. fastening the column; 531. a cylinder; 532. a tip portion; 54. an extension spring; 55. a rubber ring.

Detailed Description

The cooling water pump with high stability provided by the embodiment has the structure as shown in fig. 1 to 4, and comprises a pump body 1, wherein a shaft connecting bearing 2 is arranged in the pump body 1 in an interference fit manner, flanges 3 and impellers 4 are respectively arranged at two ends of the shaft connecting bearing 2, a mounting device 5 is further arranged in the pump body 1, and the mounting device 5 is used for mounting the impellers 4 on the shaft connecting bearing 2.

Installation device 5 includes threaded connection in the fixed sleeve 51 of axle even bearing 2 one end, and fixed sleeve 51 overlaps and locates the one end that axle even bearing 2 was equipped with impeller 4, fixed sleeve 51 includes that the chamber 512 and the screw thread portion 511 that hold that set gradually along self length direction hold, hold the chamber 512 and locate the one end that fixed sleeve 51 leaned on impeller 4, the inner wall that holds chamber 512 coats and is stamped the rubber pad 513, screw thread portion 511 is located on the inner wall that fixed sleeve 51 deviates from impeller 4 one end, and fixed sleeve 51 is equipped with the one end that holds chamber 512 and is provided with the rubber circle 55 that offsets with impeller 4.

Impeller 4 deviates from the coaxial solid fixed ring 52 that is provided with of one end of flange 3, and solid fixed ring 52 is used for inserting to fixed sleeve 51 hold the chamber 512 in, gu fixed ring 52 highly sets up to be less than the height that holds chamber 512, gu fixed ring 52's outer wall also contradicts with rubber pad 513, gu fixed ring 52's inside is slided and is connected with a plurality of fastening posts 53, all fastening posts 53 set up along solid fixed ring 52's circumferencial direction equidistant interval, and fastening post 53 slides along solid fixed ring 52's diametral direction, be connected with extension spring 54 between fastening post 53 and the solid fixed ring 52.

The fastening post 53 includes cylinder 531 and point portion 532 that set gradually along self length direction, and cylinder 531 slides in the inside of solid fixed ring 52 radially, and point portion 532 is fixed in the main part towards the one end outside solid fixed ring 52, and the one end that the main part deviates from point portion 532 is used for connecting extension spring 54, and under normal condition point portion 532 flushes with the outer wall of solid fixed ring 52.

When the impeller 4 is installed, firstly, the whole impeller 4 is sleeved at one end of the shaft connecting bearing 2, one side of the impeller 4 provided with the fixing ring 52 faces outwards, then the fixing sleeve 51 is sleeved at the end of the shaft connecting bearing 2, in the sleeving process, the screw thread part 511 of the fixing sleeve 51 is in screw thread connection with the shaft connecting bearing 2, meanwhile, the accommodating cavity 512 is gradually sleeved on the fixing ring 52 until the fixing ring 52 is completely inserted into the accommodating cavity 512, in the rotating process of the impeller 4, due to the action of centrifugal force, the fastening column 53 in the fixing ring 52 slides outwards, so that the rubber pads 513 of the fastening column 53 are in contact with each other and exert certain pressure on the fastening column, and the friction force of the rubber pads 513 is larger, so that the relative displacement between the fixing sleeve 51 and the fixing ring 52 is not easy to generate, and the whole impeller 4 is not easy to generate the loosening phenomenon, the whole water pump can be stably operated for a long time, and the safety is high.

Fastening post 53 is provided with point portion 532 for fastening post 53 is when inconsistent with rubber pad 513, through the elasticity of rubber pad 513 self, fastening post 53 can be partly embedded into to rubber pad 513 in, thereby has guaranteed the connection that both can be more firm, makes difficult relative displacement that produces more between fixed sleeve 51 and the solid fixed ring 52, and point portion 532 sets up to flushing with the outside, makes fixed sleeve 51 more convenient at the in-process of installation.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a high stability cooling water pump, includes the pump body (1), and the inside interference fit of the pump body (1) has axle to connect bearing (2), and the both ends of axle to connect bearing (2) are equipped with flange (3) and impeller (4) respectively, its characterized in that: also comprises a mounting device (5) used for mounting the impeller (4) on the shaft connecting bearing (2), installing device (5) lean on fixed sleeve (51) of impeller (4) one end including threaded connection in hub bearing (2), the one end coaxial setting that impeller (4) deviates from flange (3) inserts fixed ring (52) to fixed sleeve (51) in, set up screw thread portion (511) with hub bearing (2) threaded connection on the inner wall that fixed sleeve (51) deviates from fixed ring (52) one end, the one end that fixed sleeve (51) deviates from screw thread portion (511) is equipped with and supplies fixed ring (52) male chamber (512) that holds, the inner wall that holds chamber (512) coats and is stamped rubber pad (513) inconsistent with fixed ring (52), the internal connection of fixed ring (52) has radial sliding and fastening post (53) inconsistent with rubber pad (513).

2. The high stability cooling water pump of claim 1, wherein: fastening post (53) are including radially sliding connection in solid fixed ring (52) inside cylinder (531), and cylinder (531) are fixed with the point portion (532) that offsets with rubber pad (513) by the outer one end of solid fixed ring (52), and set up to elastic connection between cylinder (531) and solid fixed ring (52), and point portion (532) flushes with the outer wall of solid fixed ring (52) under normal condition.

3. A high stability cooling water pump according to claim 2, wherein: an extension spring (54) is connected between the column body (531) and the fixed ring (52).

4. A high stability cooling water pump according to claim 2, wherein: the fastening columns (53) are arranged at intervals along the circumferential direction of the fixing ring (52).

5. The high stability cooling water pump of claim 4, wherein: the fastening columns (53) are arranged at equal intervals along the circumferential direction of the fixing ring (52).

6. The high stability cooling water pump of claim 1, wherein: the height of the accommodating chamber (512) is set to be greater than that of the fixing ring (52).

7. The high stability cooling water pump of claim 1, wherein: one end of the fixed sleeve (51) provided with the containing cavity (512) is provided with a rubber ring (55) which is abutted against the impeller (4).