CN217712965U - Sealing structure of centrifugal pump - Google Patents
Sealing structure of centrifugal pump Download PDFInfo
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- CN217712965U CN217712965U CN202220843196.0U CN202220843196U CN217712965U CN 217712965 U CN217712965 U CN 217712965U CN 202220843196 U CN202220843196 U CN 202220843196U CN 217712965 U CN217712965 U CN 217712965U
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- sealing ring
- ring
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- impeller
- pump
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Abstract
The utility model discloses a centrifugal pump seal structure relates to water pump seal technical field, which comprises a pump body, impeller cavity and cavity have been seted up respectively at both ends about the pump body is inside, the inside rotation of cavity is connected with the pump shaft, the left end of pump shaft runs through into the impeller cavity and installs the impeller, the outer periphery welding of pump shaft has the fender ring, there is annular seat in the inside left side of cavity through the mounting screw, the interior circumference sliding connection of annular seat has the sealing ring, the inside left side of sealing ring is interior conical surface and has seted up the helicla flute, the ring channel has been seted up to the inside right flank of impeller cavity, the right flank of impeller has the change through the mounting screw, the right-hand member of change extends into the inside of ring channel, the oil box that is used for storing lubricating oil is installed to the right-hand member at pump body top. When the clearance between fender ring and the sealing ring grow, the sealing ring can be pushed by the spring and slide left to this makes the inside left side of sealing ring can continue to keep off the right flank laminating of ring, thereby eliminates and keeps off the clearance between ring and the sealing ring.
Description
Technical Field
The utility model relates to a water pump seal technical field especially relates to a centrifugal pump seal structure.
Background
Centrifugal pumps are water pumps that transport liquids by centrifugal force generated when an impeller rotates, and are generally most common in industrial production.
Usually, a sealing ring is used for sealing between a pump shaft and a pump body, but after the centrifugal pump is used for a long time, abrasion can be generated between the sealing ring and the pump shaft, so that a gap between the pump shaft and the sealing ring is enlarged, and the sealing effect is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a centrifugal pump seal structure to solve the clearance between pump shaft that above-mentioned background art provided and the sealing member and use the back grow for a long time, influence the problem of sealed effect.
In order to realize the purpose, the utility model adopts the following technical scheme:
a centrifugal pump sealing structure comprises a pump body, wherein an impeller cavity and a cavity are respectively formed in the left end and the right end of the interior of the pump body, a pump shaft is rotatably connected to the interior of the cavity, and the left end of the pump shaft penetrates through the impeller cavity and is provided with an impeller;
the pump comprises a pump shaft, a cavity, a baffle ring, a sealing ring and a spiral groove, wherein the baffle ring is welded on the outer circumference of the pump shaft, an annular seat is installed on the left side inside the cavity through a screw, the inner circumference of the annular seat is connected with the sealing ring in a sliding manner, and the left side inside the sealing ring is an inner conical surface and is provided with the spiral groove;
the right flank of impeller cavity inside has seted up the ring channel, the right flank of impeller has the change through the bolt mounting, the right-hand member of change extends into the inside of ring channel, the right-hand member at pump body top is installed the oil box that is used for storing lubricating oil.
Furthermore, the annular seat is positioned on the periphery of the pump shaft, and the sealing ring is sleeved outside the pump shaft.
Furthermore, the baffle ring is positioned on the inner side of the annular seat, the baffle ring is positioned on the left side of the sealing ring, and the right side surface of the baffle ring is an external conical surface and is attached to an internal conical surface on the left side inside the sealing ring.
Furthermore, a plurality of sliding grooves are uniformly formed in the inner circumferential surface of the annular seat, and a plurality of sliding blocks are uniformly welded on the outer circumferential surface of the sealing ring.
Furthermore, a plurality of sliding blocks are respectively arranged in the plurality of sliding grooves and are in sliding connection with the sliding grooves, and springs are fixedly connected between the right side surfaces of the sliding blocks and the right side surfaces of the insides of the sliding grooves on the same side.
Furthermore, an oil duct is formed in the upper end of the inner portion of the sealing ring, the left end of the oil duct is communicated with the spiral groove, a first oil pipe is inserted into the right end of the oil duct in an inserted mode, and the top of the first oil pipe penetrates through the pump body and is inserted into the bottom of the oil box.
Further, rolling bearings are installed between the inner surface and the outer surface of the rotating ring and the annular groove, a second oil pipe is inserted into the upper end of the right side surface of the annular groove, and the right end of the second oil pipe penetrates through the pump body and is inserted into the left side of the oil box.
Compared with the prior art, the utility model discloses the beneficial effect who realizes:
the annular seat is arranged outside the pump shaft, the sealing ring is sleeved outside the pump shaft, the left side inside the sealing ring is in sliding connection with the right side face of the retaining ring on the pump shaft, so that the sealing ring can be sealed between the impeller cavity and the cavity, and when the contact surface between the retaining ring and the sealing ring is worn, and the gap between the retaining ring and the sealing ring is increased, the sealing ring can be pushed by the spring to slide leftwards, so that the left side inside the sealing ring can be continuously attached to the right side face of the retaining ring, the gap between the retaining ring and the sealing ring is eliminated, and the sealing effect is prevented from being influenced by the gap;
through installing the change on the impeller, the right-hand member of change is located the ring channel of the pump body again, and when the impeller rotated, the change was followed and is rotated to this can improve impeller pivoted stability, prevents that the impeller from taking place to rock, and the change can separate the water in impeller cavity and pump shaft, thereby can avoid the junction of the water flow direction pump shaft in impeller cavity and sealing ring, with this sealed effect that can further improve the centrifugal pump.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1 according to the present invention.
Fig. 3 is a partially enlarged schematic view of the point B of fig. 1 according to the present invention.
In FIGS. 1-3: 1-pump body, 101-impeller cavity, 102-cavity, 103-annular groove, 2-pump shaft, 201-baffle ring, 3-impeller, 4-annular seat, 401-chute, 5-sealing ring, 501-spiral groove, 502-oil channel, 6-slide block, 7-spring, 8-first oil pipe, 9-swivel, 10-rolling bearing, 11-second oil pipe and 12-oil box.
Detailed Description
Please refer to fig. 1 to 3:
the utility model provides a centrifugal pump sealing structure, which comprises a pump body 1, wherein the left end and the right end inside the pump body 1 are respectively provided with an impeller cavity 101 and a cavity 102, the inside of the cavity 102 is rotatably connected with a pump shaft 2, and the left end of the pump shaft 2 penetrates through the impeller cavity 101 and is provided with an impeller 3;
the pump comprises a pump body 1, a pump shaft 2, a baffle ring 201, a sealing ring 5, a spiral groove 501 and an oil box 12, wherein the baffle ring 201 is welded on the outer circumferential surface of the pump shaft 2, the annular seat 4 is installed on the left side inside a cavity 102 through a screw, the sealing ring 5 is connected on the inner circumferential surface of the annular seat 4 in a sliding mode, the left side inside the sealing ring 5 is an inner conical surface and is provided with the spiral groove, and the right end of the top of the pump body 1 is provided with the oil box 12 for storing lubricating oil;
specifically, the annular seat 4 is located at the periphery of the pump shaft 2, the sealing ring 5 is sleeved outside the pump shaft 2, the baffle ring 201 is located inside the annular seat 4, the baffle ring 201 is located on the left side of the sealing ring 5, the right side face of the baffle ring 201 is an outer conical surface and is attached to an inner conical surface on the left side inside the sealing ring 5, the inner circumferential face of the annular seat 4 is uniformly provided with a plurality of sliding grooves 401, the outer circumferential face of the sealing ring 5 is uniformly welded with a plurality of sliding blocks 6, the plurality of sliding blocks 6 are respectively located in the plurality of sliding grooves 401 and are in sliding connection with the sliding grooves 401, a spring 7 is fixedly connected between the right side face of each sliding block 6 and the right side face inside the sliding groove 401 on the same side, the upper end inside the sealing ring 5 is provided with an oil duct 502, the left end of the oil duct 502 is communicated with the spiral groove 501, the right end of the oil duct 502 is inserted with a first oil duct 8, and the top of the first oil duct 8 penetrates through the pump body 1 and is inserted into the bottom of the oil box 12;
the right side surface of the baffle ring 201 is set to be an outer conical surface, and the left side inside the sealing ring 5 is set to be an inner conical surface, so that after the outer conical surface of the baffle ring 201 is attached to the inner conical surface of the sealing ring 5, a sealing structure can be formed between the baffle ring 201 and the sealing ring 5 by using the principle of taper fit, and meanwhile, the baffle ring 201 can rotate on the left side inside the sealing ring 5;
lubricating oil is filled in the oil box 12, the lubricating oil can flow into the oil channel 502 through the first oil pipe 8, and the lubricating oil in the oil channel 502 can flow into the spiral groove 501, so that the lubricating oil on the spiral groove 501 can lubricate the space between the retainer ring 201 and the sealing ring 5, and the abrasion is reduced;
the sliding block 6 can slide left and right in the sliding groove 401, so that the sealing ring 5 can also slide left and right on the annular seat 4, the spring 7 is in a compressed state, the spring 7 can apply a leftward thrust to the sliding block 6 by using the elastic force, so that the sealing ring 5 has a leftward movement tendency, and the sealing ring 5 can be tightly attached to the baffle ring 201;
if the contact surface between the baffle ring 201 and the sealing ring 5 is worn and the gap between the baffle ring 201 and the sealing ring 5 is enlarged, the sealing ring 5 is pushed by the spring 7 to slide leftwards, so that the left side inside the sealing ring 5 can be continuously attached to the right side surface of the baffle ring 201, the gap between the baffle ring 201 and the sealing ring 5 is eliminated, and the sealing effect is prevented from being influenced by the gap;
specifically, an annular groove 103 is formed in the right side surface inside the impeller cavity 101, a rotating ring 9 located on the periphery of the pump shaft 2 is mounted on the right side surface of the impeller 3 through screws, the right end of the rotating ring 9 extends into the annular groove 103, rolling bearings 10 are mounted between the inner surface and the outer surface of the rotating ring 9 and the annular groove 103, a second oil pipe 11 is inserted into the upper end of the right side surface of the annular groove 103, and the right end of the second oil pipe 11 penetrates out of the pump body 1 and is inserted into the left side of the oil box 12;
the rolling bearing 10 is arranged between the rotating ring 9 and the annular groove 103, so that the rotating ring 9 can rotate in the annular groove 103, the left side of the rolling bearing 10 is provided with a sealing ring, water in the impeller cavity 101 can be prevented from entering the annular groove 103, lubricating oil in the oil box 12 can flow into the annular groove 103 through the second oil pipe 11, and the lubricating oil in the annular groove 103 can lubricate the rolling bearing 10;
therefore, the rotating ring 9 is arranged on the impeller 3, the right end of the rotating ring 9 is located on the annular groove 103 of the pump body 1, when the impeller 3 rotates, the rotating ring 9 rotates along with the impeller 3, so that the rotating stability of the impeller 3 can be improved, the impeller 3 is prevented from shaking, the rotating ring 9 can separate water in the impeller cavity 101 from the pump shaft 2, the water in the impeller cavity 101 can be prevented from flowing to the joint of the pump shaft 2 and the sealing ring 5, and the sealing effect of the centrifugal pump can be further improved.
In summary, the following steps:
the annular seat 4 is arranged outside the pump shaft 2, the sealing ring 5 is also sleeved outside the pump shaft 2, and the left side inside the sealing ring 5 is in sliding connection with the right side surface of the baffle ring 201, so that the impeller cavity 101 and the cavity 102 can be sealed, and when the contact surface between the baffle ring 201 and the sealing ring 5 is worn and the gap between the baffle ring 201 and the sealing ring 5 is increased, the sealing ring 5 is pushed by the spring 7 to slide leftwards, so that the left side inside the sealing ring 5 can be continuously attached to the right side surface of the baffle ring 201, the gap between the baffle ring 201 and the sealing ring 5 is eliminated, and the sealing effect is prevented from being influenced by the gap;
through installing change 9 on impeller 3, the right-hand member of change 9 is located the ring channel 103 of the pump body 1 again, when impeller 3 rotated, change 9 followed and rotated to this can improve impeller 3 pivoted stability, prevent that impeller 3 from taking place to rock, and change 9 can separate the water of impeller cavity 101 with pump shaft 2, thereby can avoid the junction of the water flow direction pump shaft 2 of impeller cavity 101 and sealing ring 5, with this sealed effect that can further improve the centrifugal pump.
Claims (7)
1. The utility model provides a centrifugal pump seal structure, includes the pump body (1), impeller cavity (101) and cavity (102) have been seted up respectively to both ends about the pump body (1) is inside, the internal rotation of cavity (102) is connected with pump shaft (2), the left end of pump shaft (2) runs through into impeller cavity (101) and installs impeller (3), its characterized in that:
a baffle ring (201) is welded on the outer circumferential surface of the pump shaft (2), an annular seat (4) is installed on the left side inside the cavity (102) through a screw, a sealing ring (5) is connected to the inner circumferential surface of the annular seat (4) in a sliding mode, and an inner conical surface and a spiral groove (501) are formed in the left side inside the sealing ring (5);
annular groove (103) have been seted up to the inside right flank of impeller cavity (101), there is swivel (9) that is located pump shaft (2) periphery right flank of impeller (3) through the mounting screw, the right-hand member of swivel (9) extends into the inside of annular groove (103), oil box (12) that are used for storing lubricating oil are installed to the right-hand member at pump body (1) top.
2. A centrifugal pump seal structure according to claim 1, wherein: the annular seat (4) is located on the periphery of the pump shaft (2), and the sealing ring (5) is sleeved outside the pump shaft (2).
3. A centrifugal pump seal structure according to claim 2, wherein: the baffle ring (201) is located on the inner side of the annular seat (4), the baffle ring (201) is located on the left side of the sealing ring (5), and the right side surface of the baffle ring (201) is an outer conical surface and is attached to an inner conical surface on the left side inside the sealing ring (5).
4. A centrifugal pump seal structure according to claim 1, wherein: the inner circumferential surface of the annular seat (4) is uniformly provided with a plurality of sliding grooves (401), and the outer circumferential surface of the sealing ring (5) is uniformly welded with a plurality of sliding blocks (6).
5. A centrifugal pump seal structure according to claim 4, wherein: the sliding blocks (6) are respectively positioned in the sliding grooves (401) and are in sliding connection with the sliding grooves (401), and springs (7) are fixedly connected between the right side faces of the sliding blocks (6) and the right side faces of the inner portions of the sliding grooves (401) on the same side.
6. A centrifugal pump seal structure according to claim 1, wherein: the upper end of the inside of the sealing ring (5) is provided with an oil duct (502), the left end of the oil duct (502) is communicated with the spiral groove (501), the right end of the oil duct (502) is inserted with a first oil pipe (8), and the top of the first oil pipe (8) penetrates through the pump body (1) and is inserted with the bottom of the oil box (12).
7. A centrifugal pump seal structure according to claim 1, wherein: and rolling bearings (10) are respectively arranged between the inner surface and the outer surface of the rotating ring (9) and the annular groove (103), a second oil pipe (11) is inserted into the upper end of the right side surface of the annular groove (103), and the right end of the second oil pipe (11) penetrates through the pump body (1) and is inserted into the left side of the oil box (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220843196.0U CN217712965U (en) | 2022-04-11 | 2022-04-11 | Sealing structure of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220843196.0U CN217712965U (en) | 2022-04-11 | 2022-04-11 | Sealing structure of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217712965U true CN217712965U (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220843196.0U Active CN217712965U (en) | 2022-04-11 | 2022-04-11 | Sealing structure of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217712965U (en) |
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2022
- 2022-04-11 CN CN202220843196.0U patent/CN217712965U/en active Active
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