CN216111319U - Shaft head structure and pump - Google Patents
Shaft head structure and pump Download PDFInfo
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- CN216111319U CN216111319U CN202122406723.XU CN202122406723U CN216111319U CN 216111319 U CN216111319 U CN 216111319U CN 202122406723 U CN202122406723 U CN 202122406723U CN 216111319 U CN216111319 U CN 216111319U
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- step portion
- pump
- impeller
- shaft
- gudgeon
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Abstract
The utility model belongs to the technical field of pumps, and particularly relates to a shaft head structure and a pump. The shaft head structure comprises a shaft head and an impeller. The head of drive shaft is located to the spindle nose, and the spindle nose is equipped with a first step portion and a second step portion by supreme down in proper order. The middle part of impeller has a shaft hole, and spindle nose and shaft hole phase-match, the shaft hole is equipped with third step portion and fourth step portion by supreme third step portion and the cooperation of fourth step portion and second step portion in proper order down. This spindle nose structure passes through third step portion and the cooperation of first step portion, and fourth step portion and the cooperation of second step portion make the area of contact increase and the abundant laminating of spindle nose and impeller, have solved the easy beat of impeller, have avoided the impeller because of the problem that the beat damaged, have prolonged the life of impeller.
Description
Technical Field
The utility model belongs to the technical field of pumps, and particularly relates to a shaft head structure and a pump.
Background
Pumps are commonly used for liquid delivery and mainly comprise a motor, a pump shaft and an impeller. The motor is connected with the pump shaft in a driving mode, the impeller is arranged on a shaft head of the pump shaft, and when the pump works, the motor drives the pump shaft to rotate so as to drive the impeller to rotate and convey liquid.
The pump spindle nose and the impeller in the prior art only have one contact surface, and the spindle nose contact surface is small, so that the impeller is easy to deflect up and down.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a shaft head structure and a pump, and aims to solve the technical problem that in the prior art, a shaft head and an impeller of the pump only have one contact surface, and the contact surface of the shaft head is small, so that the impeller is easy to deflect up and down.
In order to achieve the above object, an embodiment of the present invention provides a shaft head structure for a driving shaft, where the shaft head structure includes:
the shaft head is arranged at the head of the driving shaft and is sequentially provided with a first step part and a second step part from bottom to top; and
the impeller, the middle part of impeller has a shaft hole, the spindle nose with the shaft hole phase-match, the shaft hole is by supreme third step portion and the fourth step portion of being equipped with in proper order down, third step portion with first step portion cooperation, fourth step portion with second step portion cooperation.
Optionally, the shaft head comprises a shaft head bottom end, a shaft head middle section and a shaft head top end which are coaxially arranged in sequence, the diameter of the shaft head bottom end is smaller than that of the shaft head middle section, the diameter of the shaft head top end is smaller than that of the shaft head middle section, and the diameter of the shaft head top end is smaller than that of the driving shaft; the first step portion is formed at the joint of the middle section of the shaft head and the top end of the shaft head, and the second step portion is formed at the joint of the top end of the shaft head and the driving shaft.
Optionally, the first step portion, the second step portion, the third step portion and the fourth step portion are all right-angled steps.
Optionally, an upper flat pad is arranged on the second step part; the impeller is provided with a lower flat pad, the lower flat pad is positioned below the upper flat pad, and the impeller is clamped between the upper flat pad and the lower flat pad.
One or more technical solutions in the spindle nose structure provided by the embodiment of the present invention have at least one of the following technical effects: this spindle nose structure passes through third step portion and the cooperation of first step portion, and fourth step portion and the cooperation of second step portion make the area of contact increase and the abundant laminating of spindle nose and impeller, have solved the easy beat of impeller, have avoided the impeller because of the problem that the beat damaged, have prolonged the life of impeller.
In order to achieve the purpose, the pump provided by the embodiment of the utility model is provided with the shaft head structure.
Optionally, the pump further comprises:
a motor drivingly connected to the drive shaft;
the motor is fixedly arranged at the top end of the supporting tube; the drive shaft is accommodated in the support tube;
the pump body is provided with a water inlet and a water outlet, the bottom end of the supporting tube is connected with the top of the pump body, the impeller is arranged in the pump body, and the driving shaft extends into the pump body and is connected with the shaft head; and
and the liquid outlet pipe is connected to the water outlet.
Optionally, the lower extreme of the pump body is equipped with a pump cover, the water inlet is located on the pump cover, be equipped with a first sealing washer between the lower terminal surface of the pump body and the up end of pump cover.
Optionally, the drain pipe is a right-angle elbow, and a threaded connection portion is arranged at an outlet of the drain pipe.
Optionally, an end cover is disposed at a lower end of the motor, the end cover has a protruding portion, the protruding portion is tightly fitted to the upper end of the supporting tube, and a second sealing ring is disposed between an outer circumferential surface of the protruding portion and an inner wall surface of the upper end of the supporting tube.
Optionally, an installation disc is sleeved on the upper end of the supporting tube, a third sealing ring is arranged between the installation disc and the lower end face of the end cover, and a fourth sealing ring is arranged on the lower end face of the installation disc.
One or more technical solutions in the pump provided by the embodiment of the present invention have at least one of the following technical effects: the shaft head structure of this pump passes through third step portion and the cooperation of first step portion, and fourth step portion and the cooperation of second step portion make the area of contact increase and the abundant laminating of shaft head and impeller, have solved the easy beat of impeller, have avoided the impeller because of the problem that the beat damaged, have prolonged the life of impeller, and then have prolonged the life of pump.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a pump according to an embodiment of the present invention.
Fig. 2 is a partially enlarged view of the area a shown in fig. 1.
Fig. 3 is a partially enlarged view of the region B shown in fig. 1.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.
In the description of the embodiments of the present invention, it should be understood that, if directional indications are provided in the embodiments of the present invention, such as directions of up, down, left, right, front, back, inner, outer, etc., the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "fixed" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In one embodiment of the present invention, as shown in FIGS. 1-2, a pump is provided having a head structure for use in a drive shaft 1. The shaft head structure comprises a shaft head 11 and an impeller 2. The spindle nose 11 is arranged at the head of the driving shaft 1, and the spindle nose 11 is sequentially provided with a first step part 12 and a second step part 13 from bottom to top. The middle part of the impeller 2 is provided with a shaft hole 21, the shaft head 11 is matched with the shaft hole 21, the shaft hole 21 is sequentially provided with a third step part 22 and a fourth step part 23 from bottom to top, the third step part 22 is matched with the first step part 12, and the fourth step part 23 is matched with the second step part 13.
This spindle nose 11 structure is through the cooperation of third step portion 22 with first step portion 12, and fourth step portion 23 and the cooperation of second step portion 13, makes the area of contact increase and the abundant laminating of spindle nose 11 and impeller 2, has solved impeller 2 and has deflected easily (upper and lower beat), has avoided impeller 2 to damage because of the beat problem, has prolonged impeller 2's life.
In another embodiment of the present invention, as shown in fig. 2, the head 11 of the pump includes a head bottom end 111, a head middle section 112, and a head top end 113 coaxially disposed in this order, wherein the diameter of the head bottom end 111 is smaller than that of the head middle section 112, the diameter of the head top end 113 is smaller than that of the head middle section 112, and the diameter of the head top end 113 is smaller than that of the driving shaft 1. The first step 12 is formed at the junction of the stub shaft mid-section 112 and the stub shaft top end 113, and the second step 13 is formed at the junction of the stub shaft top end 113 and the drive axle 1.
In another embodiment of the present invention, as shown in fig. 2, the first step portion 12, the second step portion 13, the third step portion 22 and the fourth step portion 23 of the pump are all right-angled steps. The right angle step laminating effect and spacing effect each other.
In another embodiment of the present invention, in order to make the impeller in a stable clamping state in the up and down directions, as shown in fig. 2, an upper flat pad 131 is provided on the second step portion 13 of the pump; the impeller 2 is provided with a lower flat cushion 24, the lower flat cushion 24 is positioned below the upper flat cushion 131, and the impeller 2 is clamped between the upper flat cushion 24 and the lower flat cushion 131.
In another embodiment of the utility model, as shown in FIG. 1, the pump further comprises a motor 3, a support tube 4, a pump body 5, and a discharge tube 9. The motor 3 is connected with the driving shaft 1 in a driving way. The motor 3 is fixedly arranged at the top end of the supporting tube 4. The drive shaft 1 is accommodated in the support tube 4. The pump body 5 is provided with a water inlet 51 and a water outlet 52, the bottom end of the support tube 4 is connected with the top of the pump body 5, the impeller 2 is arranged in the pump body 5, and the drive shaft 1 extends into the pump body 5 and is connected with the shaft head 11. Effluent pipe 9 is connected to water outlet 52. When the water pump works, the motor 3 drives the driving shaft 1 to rotate, the driving shaft 1 drives the impeller 2 to rotate, negative pressure is formed in the pump body 5, water is pumped from the water inlet 51, and then the water is output to the water outlet 52.
In another embodiment of the present invention, as shown in fig. 1, a pump cover 6 is provided at a lower end of a pump body 5 of the pump, a water inlet 51 is provided on the pump cover 6, and a first sealing ring 53 is provided between a lower end surface of the pump body 5 and an upper end surface of the pump cover 6. The first seal ring 53 improves the sealing effect between the pump body 5 and the pump cover 6.
In another embodiment of the utility model, as shown in fig. 1, the outlet pipe 9 of the pump is a right-angled elbow, and the outlet of the pump is provided with a threaded connection 91. The threaded connection portion 91 is used for connecting an interface of an external pipeline in a threaded manner.
In another embodiment of the present invention, as shown in fig. 3, the lower end of the motor 3 of the pump is provided with an end cap 7, the end cap 7 is provided with a protrusion 71, the protrusion 71 is tightly fitted to the upper end of the support tube 4, and a second sealing ring 72 is provided between the outer circumferential surface of the protrusion 71 and the inner wall surface of the upper end of the support tube 4. The second seal ring 72 seals the gap between the projection 71 and the support tube 4.
In another embodiment of the present invention, as shown in fig. 3, the upper end of the supporting tube 4 of the pump is sleeved with a mounting plate 8, a third sealing ring 73 is arranged between the mounting plate 8 and the lower end surface of the end cover 7, and a fourth sealing ring 81 is arranged on the lower end surface of the mounting plate 8. Third seal 73 seals the gap between mounting plate 8 and the mounting plane after mounting plate 8 is mounted on the mounting plane.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a spindle nose structure, is applied to in the drive shaft, its characterized in that, spindle nose structure includes:
the shaft head is arranged at the head of the driving shaft and is sequentially provided with a first step part and a second step part from bottom to top; and
the impeller, the middle part of impeller has a shaft hole, the spindle nose with the shaft hole phase-match, the shaft hole is by supreme third step portion and the fourth step portion of being equipped with in proper order down, third step portion with first step portion cooperation, fourth step portion with second step portion cooperation.
2. The gudgeon structure of claim 1, characterized in that the gudgeon comprises a gudgeon bottom end, a gudgeon middle section and a gudgeon top end coaxially arranged in this order, the diameter of the gudgeon bottom end being smaller than the diameter of the gudgeon middle section, the diameter of the gudgeon top end being smaller than the diameter of the drive shaft; the first step portion is formed at the joint of the middle section of the shaft head and the top end of the shaft head, and the second step portion is formed at the joint of the top end of the shaft head and the driving shaft.
3. The gudgeon structure of claim 1 or 2, characterized in that the first, second, third and fourth step are all right-angled steps.
4. The gudgeon structure of claim 1 or 2, characterized in that an upper flat pad is provided on the second step portion; the impeller is provided with a lower flat pad, the lower flat pad is positioned below the upper flat pad, and the impeller is clamped between the upper flat pad and the lower flat pad.
5. Pump, characterized in that it has a gudgeon construction according to any of claims 1-4.
6. The pump of claim 5, further comprising:
a motor drivingly connected to the drive shaft;
the motor is fixedly arranged at the top end of the supporting tube; the drive shaft is accommodated in the support tube;
the pump body is provided with a water inlet and a water outlet, the bottom end of the supporting tube is connected with the top of the pump body, the impeller is arranged in the pump body, and the driving shaft extends into the pump body and is connected with the shaft head; and
and the liquid outlet pipe is connected to the water outlet.
7. The pump of claim 6, wherein the pump body has a pump cover at a lower end thereof, the water inlet is provided in the pump cover, and a first seal ring is provided between a lower end surface of the pump body and an upper end surface of the pump cover.
8. The pump of claim 6, wherein the outlet pipe is a right angle elbow with a threaded connection at the outlet.
9. A pump according to any one of claims 6 to 8, wherein the lower end of the motor is provided with an end cap having a protrusion which fits closely over the upper end of the support tube, and a second seal is provided between the outer peripheral surface of the protrusion and the inner wall surface of the upper end of the support tube.
10. The pump of claim 9, wherein the upper end of the support tube is fitted with a mounting plate, a third seal ring is provided between the mounting plate and the lower end surface of the end cap, and a fourth seal ring is provided on the lower end surface of the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122406723.XU CN216111319U (en) | 2021-09-30 | 2021-09-30 | Shaft head structure and pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122406723.XU CN216111319U (en) | 2021-09-30 | 2021-09-30 | Shaft head structure and pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216111319U true CN216111319U (en) | 2022-03-22 |
Family
ID=80690769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122406723.XU Active CN216111319U (en) | 2021-09-30 | 2021-09-30 | Shaft head structure and pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216111319U (en) |
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2021
- 2021-09-30 CN CN202122406723.XU patent/CN216111319U/en active Active
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