CN213540814U - Shaft sleeve - Google Patents
Shaft sleeve Download PDFInfo
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- CN213540814U CN213540814U CN202022274773.2U CN202022274773U CN213540814U CN 213540814 U CN213540814 U CN 213540814U CN 202022274773 U CN202022274773 U CN 202022274773U CN 213540814 U CN213540814 U CN 213540814U
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- sleeve
- copper
- copper inner
- steel outer
- inner sleeve
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Abstract
The application discloses axle sleeve relates to the water pump field, and it includes the steel overcoat, and the coaxial copper endotheca that is fixed with of steel overcoat inner wall. This application adopts the structure that steel overcoat and copper endotheca combine, when guaranteeing axle sleeve wear resistance, greatly reduces the use of copper product to greatly reduced makes the material cost of axle sleeve.
Description
Technical Field
The application relates to the field of water pumps, in particular to a shaft sleeve.
Background
At present, a common water pump structure on the market comprises a pump shell and an impeller rotatably arranged in the pump shell, and copper shaft sleeves are additionally arranged on shafts on two sides of the impeller, so that the impeller can rotate in the pump shell conveniently. Although the wear-resisting property of the shaft sleeve is strong, after the shaft sleeve is used for a long time, the condition that the inner wall of the shaft sleeve is abraded is still unavoidable, in order to avoid the influence of abrasion on the performance of the water pump, the shaft sleeve needs to be replaced in time, and in addition, the shaft sleeve on the market is basically made of copper alloy completely, so that the price is high, and the daily use and maintenance cost of the water pump is high.
SUMMERY OF THE UTILITY MODEL
In order to reduce the cost of the shaft sleeve, the application provides a shaft sleeve.
The application provides a shaft sleeve adopts following technical scheme:
a shaft sleeve comprises a steel outer sleeve, wherein a copper inner sleeve is coaxially fixed on the inner wall of the steel outer sleeve.
Through adopting above-mentioned technical scheme, the price ratio steel of copper product is more expensive, utilizes the structure that steel overcoat and copper endotheca combine, when guaranteeing that the axle sleeve possesses good wear resistance, reduces the cost of axle sleeve, is favorable to reducing the required expenditure of daily maintenance water pump change axle sleeve.
Preferably, the copper inner sleeve is welded into the steel outer sleeve.
By adopting the technical scheme, the connection strength between the copper inner sleeve and the steel outer sleeve is enhanced, and the phenomenon of layering or falling off of the copper inner sleeve is avoided.
Preferably, the inner wall of the copper inner sleeve is at least provided with two liquid-passing straight grooves in a penetrating manner along the length direction of the inner wall.
Through adopting above-mentioned technical scheme, the water of being convenient for in the water pump flows into to logical liquid straight flute, gives the axle sleeve cooling.
Preferably, the depth of the liquid through straight groove is smaller than the thickness of the copper inner sleeve, and the bottom surface of the liquid through straight groove is an arc surface.
By adopting the technical scheme, the liquid-through straight groove is formed in the inner wall of the copper inner sleeve, so that the contact area of water and the inner wall of the copper inner sleeve is increased, and the cooling effect is further improved.
Preferably, the length of the steel outer sleeve is the same as that of the copper inner sleeve, and the thickness of the copper inner sleeve is 1/3-1/4 of that of the steel outer sleeve.
By adopting the technical scheme, the balance between cost control and guarantee of sufficient wear resistance of the copper inner sleeve is achieved.
Preferably, the copper inner sleeve is a tin-phosphor bronze sleeve.
By adopting the technical scheme, the tin-phosphor bronze has good wear resistance and corrosion resistance.
Preferably, the steel jacket is a stainless steel jacket.
By adopting the technical scheme, the stainless steel has good rigidity and hardness and is corrosion-resistant, and the price of the stainless steel material is lower than that of a tin-phosphor bronze material, so that the cost of the shaft sleeve is reduced.
Preferably, the lengths of the steel outer sleeve and the copper inner sleeve are both 28mm, the outer diameter of the steel outer sleeve is 21.04 mm-21.06 mm, and the inner diameter of the copper inner sleeve is 17.12 mm-17.15 mm.
By adopting the technical scheme, the shaft sleeve is convenient to be matched with a shaft and a pump shell with standard sizes.
In summary, the present application includes at least one of the following beneficial technical effects:
the structure that the copper inner sleeve is welded in the steel outer sleeve is adopted, so that the shaft sleeve has good wear resistance, the manufacturing cost of the shaft sleeve is reduced, and the expenditure for replacing the shaft sleeve of the water pump in daily maintenance is reduced;
through setting up logical liquid straight flute, in the use, the in-process that water pressure changes in the water pump, water can reciprocating flow to logical liquid straight flute in to reach the function of giving the axle sleeve cooling.
Drawings
Fig. 1 is a schematic structural diagram of a shaft sleeve according to an embodiment of the present application.
Description of reference numerals: 1. a steel jacket; 2. a copper inner sleeve; 3. and (5) introducing liquid into the straight tank.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
The embodiment of the application discloses a shaft sleeve.
Referring to fig. 1, a shaft sleeve includes steel overcoat 1, steel overcoat 1 is the stainless steel cover, 1 inner wall coaxial fixity of steel overcoat has copper endotheca 2, copper endotheca 2 is the tin phosphor bronze cover, tin phosphor bronze has good wear resistance and corrosion resisting property, stainless steel has good rigidity and hardness, and the price of stainless steel material is cheaper than the price of tin phosphor bronze material, thereby reduce the cost of shaft sleeve, because the shaft sleeve is a consumptive material in the daily use, reduce the cost of shaft sleeve, be favorable to reducing the required expenditure of daily maintenance water pump change shaft sleeve. The copper inner sleeve 2 is welded in the steel outer sleeve 1 in an argon arc welding mode so as to enhance the connection strength between the copper inner sleeve 2 and the steel outer sleeve 1 and avoid the phenomenon of layering or falling off of the copper inner sleeve 2.
Four liquid-passing straight grooves 3 are formed in the inner wall of the copper inner sleeve 2 in a penetrating mode along the length direction of the copper inner sleeve, the four liquid-passing straight grooves 3 are arranged in a circumferential array mode and are uniformly distributed in the stroke of one circle of rotation of the impeller, the water pressure at different positions is different, water at the position with high water pressure in the water pump flows into one end, far away from the impeller, of the shaft sleeve through the two liquid-passing straight grooves 3, the flowing water flows out of the two liquid-passing straight grooves 3 with small relative water pressure values, and therefore the function of cooling the shaft sleeve is achieved; the degree of depth of leading to liquid straight flute 3 is less than the thickness of copper endotheca 2, and the bottom surface that leads to liquid straight flute 3 is the cambered surface, and the degree of depth that leads to liquid straight flute 3 lowest is 0.3mm, and the heat conductivility of copper product is better than the steel, through leading to liquid straight flute 3 in 2 inner walls of copper endotheca, is favorable to increasing the area of contact of water with 2 inner walls of copper endotheca to further improve the cooling effect.
The length of the steel outer sleeve 1 is the same as that of the copper inner sleeve 2, the length of the steel outer sleeve 1 is 28mm, the thickness of the copper inner sleeve 2 is 1/3-1/4 of the thickness of the steel outer sleeve 1, the thickness of the copper inner sleeve 2 is controlled, balance between cost control and guarantee of sufficient wear resistance of the copper inner sleeve 2 is achieved, the outer diameter of the steel outer sleeve 1 is 21.04-21.06 mm, the inner diameter of the copper inner sleeve 2 is 17.12-17.15 mm, and matching of a shaft sleeve with a shaft and a pump shell of a standard size is facilitated.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (2)
1. A shaft sleeve is characterized in that: the novel stainless steel sleeve is characterized by comprising a steel outer sleeve (1), a copper inner sleeve (2) is coaxially fixed on the inner wall of the steel outer sleeve (1), the copper inner sleeve (2) is welded in the steel outer sleeve (1), two liquid through straight grooves (3) are formed in the inner wall of the copper inner sleeve (2) in a penetrating mode along the length direction of the inner wall of the copper inner sleeve (2), the depth of each liquid through straight groove (3) is smaller than the thickness of the copper inner sleeve (2), the bottom surface of each liquid through straight groove (3) is an arc surface, the steel outer sleeve (1) is as long as the copper inner sleeve (2), the thickness of the copper inner sleeve (2) is 1/3-1/4 of the thickness of the steel outer sleeve (1), the copper inner sleeve (2) is a tin-phosphor bronze sleeve, and the steel outer sleeve (1.
2. A sleeve according to claim 1, wherein: the length of the steel outer sleeve (1) and the length of the copper inner sleeve (2) are both 28mm, the outer diameter of the steel outer sleeve (1) is 21.04 mm-21.06 mm, and the inner diameter of the copper inner sleeve (2) is 17.12 mm-17.15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022274773.2U CN213540814U (en) | 2020-10-13 | 2020-10-13 | Shaft sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022274773.2U CN213540814U (en) | 2020-10-13 | 2020-10-13 | Shaft sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213540814U true CN213540814U (en) | 2021-06-25 |
Family
ID=76497186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022274773.2U Active CN213540814U (en) | 2020-10-13 | 2020-10-13 | Shaft sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213540814U (en) |
-
2020
- 2020-10-13 CN CN202022274773.2U patent/CN213540814U/en active Active
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