CN214063368U - Multistage submerged pump sealing device - Google Patents
Multistage submerged pump sealing device Download PDFInfo
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- CN214063368U CN214063368U CN202022451639.5U CN202022451639U CN214063368U CN 214063368 U CN214063368 U CN 214063368U CN 202022451639 U CN202022451639 U CN 202022451639U CN 214063368 U CN214063368 U CN 214063368U
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Abstract
The utility model discloses a multistage submerged pump sealing device, including the pump body, impeller, dismantlement structure, pipeline and bearing, the top of the pump body is provided with the pipeline, be provided with the dismantlement structure between the pump body and the pipeline, air-tight bag is fixed in the lateral wall of bearing, one side of air-tight bag is fixed with the intake pipe, and one side of intake pipe all extends to one side of pipeline. The utility model discloses a be provided with seal structure in sealing device's inside, the second sealing washer sets up the lateral wall in the axle sleeve bottom, can prevent that liquid from entering into the inside in sealed chamber from the gap of axle sleeve and pump body inside wall, the compaction layer can make the hole between the lateral wall of axle sleeve and the sealed chamber can be filled up, prevent liquid infiltration, air bag can further avoid liquid to get into the inside in sealed chamber from the hole of axle sleeve bottom and bearing, the setting of this structure has improved holistic leakproofness, the infiltration of liquid has effectively been avoided and has been revealed.
Description
Technical Field
The utility model relates to a sealing device technical field specifically is multistage submerged pump sealing device.
Background
The submerged pump is used for pumping and conveying liquid media by penetrating part of a pump body into liquid, can convey strong acid, strong base and various flammable and explosive media, can be widely used for conveying media in the fields of chemical industry, pharmacy, smelting, chemical fertilizers and the like, and needs to use a sealing device in order to ensure that the media cannot leak out in the process of conveying the liquid media by the submerged pump;
however, the conventional sealing device has a single sealing mode and a poor sealing effect, so a multi-stage submerged pump sealing device is developed to solve the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multistage submerged pump sealing device to the sealing device sealing means who provides in solving above-mentioned background art is single, sealed effect unsatisfactory problem.
In order to achieve the above object, the utility model provides a following technical scheme: the multistage submerged pump sealing device comprises a pump body, an impeller, a dismounting structure, a pipeline and a bearing, wherein the pipeline is arranged at the top end of the pump body, the dismounting structure is arranged between the pump body and the pipeline, the impeller is arranged at the bottom end inside the pump body, the bearing is fixed at the top end of the impeller, the top end of the bearing extends to the top end inside the pipeline, a sealing cavity is arranged inside the joint of the pump body and the pipeline, a shaft sleeve is arranged on the outer side wall of the bottom end of the bearing, the top end of the shaft sleeve extends to the inside of the sealing cavity, a first sealing ring is arranged between the impeller and the shaft sleeve, a protective structure is arranged inside the first sealing ring, a sealing structure is arranged between the outer side wall of the bottom end of the shaft sleeve and the inner side wall of the pump body, the sealing structure comprises a second sealing ring, a sealing air bag, an air inlet pipe, a compaction layer and a packing layer, the second sealing ring is fixed on the outer side wall of the bottom end of the shaft sleeve, the packing layer is fixed in the lateral wall on axle sleeve top, and the bottom of packing layer is fixed with the top of sealed intracavity portion, the top of packing layer is fixed with the compaction layer, sealed gasbag is fixed in the lateral wall of bearing, and sealed gasbag's bottom extends to the top of axle sleeve, one side of sealed gasbag is fixed with the intake pipe, and one side of intake pipe all extends to one side of pipeline.
Preferably, dismantle the structure and include fixing bolt, preformed hole, solid fixed ring, fixture block and draw-in groove, the draw-in groove all sets up in the inside on dismantling structure both sides top, the inside of draw-in groove is provided with the fixture block, and the top of fixture block and the bottom mounting of pipeline both sides, the inside of fixture block runs through there is the preformed hole, and the top of preformed hole extends to the top of pipeline both sides to the bottom of preformed hole all extends to the bottom of pump body both sides, the inside of preformed hole is provided with fixing bolt, and fixing bolt's bottom is provided with solid fixed ring.
Preferably, the outer side wall of the fixing bolt is uniformly provided with external threads, the inner part of the preformed hole is uniformly provided with internal threads, and the fixing bolt is in threaded connection with the preformed hole.
Preferably, the fixing bolts are arranged in a plurality of numbers, and the fixing bolts are distributed on the top ends of the two sides of the pipeline in an annular shape.
Preferably, the width of the cross section of the clamping block is smaller than that of the cross section of the clamping groove, and a clamping structure is formed between the clamping block and the clamping groove.
Preferably, protective structure includes first lag, second lag and third lag, the lateral wall that first sealing washer is fixed in to the third lag, the lateral wall of third lag is provided with the second lag, the lateral wall of second lag is provided with first lag.
Compared with the prior art, the beneficial effects of the utility model are that: the multistage submerged pump sealing device not only realizes multistage sealing, but also realizes flexible disassembly for overhauling the inside and enhances the corrosion resistance of the inside of the first sealing ring;
(1) the sealing structure is arranged in the sealing device, the second sealing ring is arranged on the outer side wall of the bottom end of the shaft sleeve, liquid can be prevented from entering the sealing cavity from a gap between the shaft sleeve and the inner side wall of the pump body, a compaction layer can enable a hole between the outer side wall of the shaft sleeve and the sealing cavity to be filled, liquid permeation is prevented, the sealing air bag can further prevent the liquid from entering the sealing cavity from the bottom end of the shaft sleeve and the hole of the bearing, the overall sealing performance is improved through the arrangement of the structure, and liquid permeation and leakage are effectively avoided;
(2) the disassembly structure is arranged between the pipeline and the pump body of the sealing device, the fixing bolt is rotated, so that the bottom end of the fixing bolt is withdrawn from the inside of the reserved hole, the pipeline can be disassembled from the top end of the pump body, the sealing part in the sealing cavity can be overhauled, the whole sealing performance can be ensured to be in a normal state all the time, and the whole practicability is improved;
(3) through the inside at the first sealing washer of sealing device being provided with protective structure, when the inside liquid that has strong corrosivity of the pump body passed through, the setting of this structure can avoid direct and the first sealing washer contact of corrosive fluids, fine protection first sealing washer not corroded the damage by the corrosive fluid, first lag has high wear resistance in addition, can reduce the bearing and rotate the wearing and tearing of in-process to first sealing washer, has prolonged the life of first sealing washer.
Drawings
Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;
fig. 2 is a schematic top view of the present invention;
fig. 3 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention;
fig. 4 is a schematic view of the front view structure of the corrosion-resistant structure of the present invention.
In the figure: 1. a pump body; 2. a first seal ring; 3. an impeller; 4. a sealing structure; 401. a second seal ring; 402. sealing the air bag; 403. an air inlet pipe; 404. compacting the layer; 405. a filler layer; 5. a shaft sleeve; 6. disassembling the structure; 601. fixing the bolt; 602. reserving a hole; 603. a fixing ring; 604. a clamping block; 605. a card slot; 7. a pipeline; 8. a bearing; 9. sealing the cavity; 10. a protective structure; 1001. a first protective cover; 1002. a second protective cover; 1003. and a third protective sheath.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides an embodiment: the multistage submerged pump sealing device comprises a pump body 1, an impeller 3, a dismounting structure 6, a pipeline 7 and a bearing 8, wherein the pipeline 7 is arranged at the top end of the pump body 1, the dismounting structure 6 is arranged between the pump body 1 and the pipeline 7, the impeller 3 is arranged at the bottom end inside the pump body 1, the bearing 8 is fixed at the top end of the impeller 3, the top end of the bearing 8 extends to the top end inside the pipeline 7, a sealing cavity 9 is arranged inside the joint of the pump body 1 and the pipeline 7, a shaft sleeve 5 is arranged on the outer side wall of the bottom end of the bearing 8, the top end of the shaft sleeve 5 extends to the inside of the sealing cavity 9, a first sealing ring 2 is arranged between the impeller 3 and the shaft sleeve 5, a protective structure 10 is arranged inside the first sealing ring 2, and a sealing structure 4 is arranged between the outer side wall of the bottom end of the shaft sleeve 5 and the inner side wall of the pump body 1;
the sealing structure 4 comprises a second sealing ring 401, a sealing air bag 402, an air inlet pipe 403, a compaction layer 404 and a packing layer 405, the second sealing ring 401 is fixed on the outer side wall of the bottom end of the shaft sleeve 5, the packing layer 405 is fixed on the outer side wall of the top end of the shaft sleeve 5, the bottom end of the packing layer 405 is fixed with the top end inside the sealing cavity 9, the compaction layer 404 is fixed on the top end of the packing layer 405, the sealing air bag 402 is fixed on the outer side wall of the bearing 8, the bottom end of the sealing air bag 402 extends to the top end of the shaft sleeve 5, the air inlet pipe 403 is fixed on one side of the sealing;
specifically, as shown in fig. 1 and fig. 2, when the structure is used, firstly, the second sealing ring 401 is arranged on the outer side wall of the bottom end of the shaft sleeve 5, so that liquid can be prevented from entering the inside of the sealing cavity 9 from a gap between the shaft sleeve 5 and the inner side wall of the pump body 1, the compacting layer 404 can enable a gap between the outer side wall of the shaft sleeve 5 and the sealing cavity 9 to be filled, so that liquid permeation is prevented, the compacting layer 404 can further compact the packing layer 405, so that the possibility of liquid permeation is reduced, the sealing air bag 402 is blocked at the joint between the top end of the shaft sleeve 5 and the bearing 8, so that liquid can be further prevented from entering the inside of the sealing cavity 9 from the gap between the bottom end of the shaft sleeve 5 and the bearing 8, and the arrangement of the structure improves the overall sealing performance;
the disassembly structure 6 comprises a fixing bolt 601, a preformed hole 602, a fixing ring 603, a fixture block 604 and a clamping groove 605, wherein the clamping groove 605 is arranged inside the top ends of two sides of the disassembly structure 6, the fixture block 604 is arranged inside the clamping groove 605, the top end of the fixture block 604 is fixed with the bottom ends of two sides of the pipeline 7, the preformed hole 602 penetrates through the inside of the fixture block 604, the top end of the preformed hole 602 extends to the top ends of two sides of the pipeline 7, the bottom end of the preformed hole 602 extends to the bottom ends of two sides of the pump body 1, the fixing bolt 601 is arranged inside the preformed hole 602, the fixing ring 603 is arranged at the bottom end of the fixing bolt 601, the outer side wall of the fixing bolt 601 is uniformly provided with external threads, the inside of the preformed hole 602 is uniformly provided with internal threads, the fixing bolt 601 is in threaded connection with the preformed hole 602, the fixing bolt 601 is provided with a plurality of bolts, the plurality of fixing bolts 601 are annularly distributed at the top ends of two sides of the pipeline 7, the width of the cross section of the fixture block 604 is smaller than that of the cross section of the clamping groove 605, and a clamping structure is formed between the fixture block 604 and the clamping groove 605;
specifically, as shown in fig. 1 and 3, when the structure is used, firstly, the fixing ring 603 is rotated, the fixing ring 603 is detached from the bottom end of the fixing bolt 601, the fixing bolt 601 is rotated, the bottom end of the fixing bolt 601 exits the inside of the preformed hole 602, the pipeline 7 is pulled, the fixture block 604 exits the inside of the clamping groove 605, and the pipeline 7 is detached from the top end of the pump body 1, so that the sealing part inside the sealing cavity 9 can be overhauled, the whole sealing performance can be ensured to be always in a normal state, and the whole practicability is improved;
the protective structure 10 comprises a first protective sleeve 1001, a second protective sleeve 1002 and a third protective sleeve 1003, the third protective sleeve 1003 is fixed on the outer side wall of the first sealing ring 2, the second protective sleeve 1002 is arranged on the outer side wall of the third protective sleeve 1003, and the first protective sleeve 1001 is arranged on the outer side wall of the second protective sleeve 1002;
specifically, as shown in fig. 1 and 4, when the structure is used, firstly, the first protective sleeve 1001 contains silicon carbide and has the characteristics of high hardness, high wear resistance, high corrosion resistance and the like, the second protective sleeve 1002 contains polyurethane and has excellent chemical corrosion resistance and wear resistance, the third protective sleeve 1003 contains glass flakes and has high cohesive force, corrosion resistance and ageing resistance, and under the interaction of the first protective sleeve 1001, the second protective sleeve 1002 and the third protective sleeve 1003, the corrosion resistance and the wear resistance of the first sealing ring 2 can be greatly improved, and the service life of the first sealing ring 2 is prolonged.
The working principle is as follows: firstly, when the impeller 3 starts to rotate to pump liquid, the second sealing ring 401 is arranged on the outer side wall of the bottom end of the shaft sleeve 5, so that the liquid can be prevented from entering the inside of the sealing cavity 9 from a gap between the shaft sleeve 5 and the inner side wall of the pump body 1, the compacting layer 404 can enable a gap between the outer side wall of the shaft sleeve 5 and the sealing cavity 9 to be filled, so that the liquid is prevented from permeating, the compacting layer 404 can further compact the packing layer 405, so that the possibility of the liquid permeating is reduced, the sealing air bag 402 is blocked at the connecting position of the top end of the shaft sleeve 5 and the bearing 8, so that the liquid can be further prevented from entering the inside of the sealing cavity 9 from the gap between the bottom end of the shaft sleeve 5 and the bearing 8;
secondly, in the process, the first protective sleeve 1001 contains silicon carbide and has the characteristics of high hardness, high wear resistance, high corrosion resistance and the like, the second protective sleeve 1002 contains polyurethane and has excellent chemical corrosion resistance and wear resistance, and the third protective sleeve 1003 contains glass flakes and has high cohesive force, corrosion resistance and ageing resistance;
finally, when the interior of the sealed cavity 9 needs to be overhauled, the fixing ring 603 is rotated, the fixing ring 603 is detached from the bottom end of the fixing bolt 601, the fixing bolt 601 is rotated, the bottom end of the fixing bolt 601 is led out of the inside of the preformed hole 602, the pipeline 7 is pulled, the fixture block 604 is led out of the inside of the clamping groove 605, the pipeline 7 is detached from the top end of the pump body 1, and the use work of the multistage submerged pump sealing device is finally completed.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. Multistage submerged pump sealing device, including the pump body (1), impeller (3), dismantlement structure (6), pipeline (7) and bearing (8), its characterized in that: the pump is characterized in that a pipeline (7) is arranged at the top end of the pump body (1), a dismounting structure (6) is arranged between the pump body (1) and the pipeline (7), an impeller (3) is arranged at the bottom end inside the pump body (1), a bearing (8) is fixed at the top end of the impeller (3), the top end of the bearing (8) extends to the top end inside the pipeline (7), a sealing cavity (9) is arranged inside the joint of the pump body (1) and the pipeline (7), a shaft sleeve (5) is arranged on the outer side wall of the bottom end of the bearing (8), the top end of the shaft sleeve (5) extends to the inside of the sealing cavity (9), a first sealing ring (2) is arranged between the impeller (3) and the shaft sleeve (5), a protective structure (10) is arranged inside the first sealing ring (2), and a sealing structure (4) is arranged between the outer side wall of the bottom end of the shaft sleeve (5) and the inner side wall of the pump body (1), seal structure (4) include second sealing washer (401), sealed gasbag (402), intake pipe (403), compaction layer (404) and packing layer (405), second sealing washer (401) are fixed in the lateral wall of axle sleeve (5) bottom, the lateral wall on axle sleeve (5) top is fixed in packing layer (405), and the bottom of packing layer (405) is fixed with the inside top in sealed chamber (9), the top of packing layer (405) is fixed with compaction layer (404), sealed gasbag (402) are fixed in the lateral wall of bearing (8), and the bottom of sealed gasbag (402) extends to the top of axle sleeve (5), one side of sealed gasbag (402) is fixed with intake pipe (403), and one side of intake pipe (403) all extends to one side of pipeline (7).
2. The multi-stage submersible pump sealing arrangement of claim 1, wherein: dismantle structure (6) including fixing bolt (601), preformed hole (602), solid fixed ring (603), fixture block (604) and draw-in groove (605), draw-in groove (605) all sets up in the inside of dismantling structure (6) both sides top, the inside of draw-in groove (605) is provided with fixture block (604), and the top of fixture block (604) and the bottom mounting of pipeline (7) both sides, preformed hole (602) has been run through to the inside of fixture block (604), and the top of preformed hole (602) extends to the top of pipeline (7) both sides to the bottom of preformed hole (602) all extends to the bottom of the pump body (1) both sides, the inside of preformed hole (602) is provided with fixing bolt (601), and the bottom of fixing bolt (601) is provided with solid fixed ring (603).
3. The multi-stage submersible pump sealing arrangement of claim 2, wherein: the outer side wall of the fixing bolt (601) is uniformly provided with external threads, the inner part of the fixing bolt (601) is uniformly provided with internal threads, and the fixing bolt (601) is in threaded connection with the preformed hole (602).
4. The multi-stage submersible pump sealing arrangement of claim 2, wherein: the fixed bolts (601) are provided with a plurality of fixed bolts (601), and the fixed bolts (601) are distributed annularly on the top ends of the two sides of the pipeline (7).
5. The multi-stage submersible pump sealing arrangement of claim 2, wherein: the width of the cross section of the clamping block (604) is smaller than that of the cross section of the clamping groove (605), and a clamping structure is formed between the clamping block (604) and the clamping groove (605).
6. The multi-stage submersible pump sealing arrangement of claim 1, wherein: protective structure (10) include first lag (1001), second lag (1002) and third lag (1003), the lateral wall of first sealing washer (2) is fixed in third lag (1003), the lateral wall of third lag (1003) is provided with second lag (1002), the lateral wall of second lag (1002) is provided with first lag (1001).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022451639.5U CN214063368U (en) | 2020-10-29 | 2020-10-29 | Multistage submerged pump sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022451639.5U CN214063368U (en) | 2020-10-29 | 2020-10-29 | Multistage submerged pump sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN214063368U true CN214063368U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022451639.5U Active CN214063368U (en) | 2020-10-29 | 2020-10-29 | Multistage submerged pump sealing device |
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| CN (1) | CN214063368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329159A (en) * | 2023-10-13 | 2024-01-02 | 哈尔滨东轻金属材料加工有限公司 | External single mechanical sealing device of mechanical sealing pump |
-
2020
- 2020-10-29 CN CN202022451639.5U patent/CN214063368U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329159A (en) * | 2023-10-13 | 2024-01-02 | 哈尔滨东轻金属材料加工有限公司 | External single mechanical sealing device of mechanical sealing pump |
| CN117329159B (en) * | 2023-10-13 | 2024-04-26 | 丹东盛欣石化设备制造有限公司 | External single mechanical sealing device of mechanical sealing pump |
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