CN219035106U - Centrifugal pump sealing device - Google Patents
Centrifugal pump sealing device Download PDFInfo
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- CN219035106U CN219035106U CN202223129087.1U CN202223129087U CN219035106U CN 219035106 U CN219035106 U CN 219035106U CN 202223129087 U CN202223129087 U CN 202223129087U CN 219035106 U CN219035106 U CN 219035106U
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- shaft sleeve
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- centrifugal pump
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Abstract
Centrifugal pump sealing device relates to sealing tool technical field, including the cover in epaxial axle sleeve, the hole of axle sleeve is equipped with two interior packing side by side, is equipped with interior sealing washer on the inner wall of interior packing, and the inner circle of interior sealing washer offsets with the pivot, is equipped with two outer packing side by side on the outer wall of changeing the cover, and the outer lane of outer packing offsets with the pump body, and the inner circle of outer packing offsets with the outer wall of axle sleeve, still is equipped with the adjusting part that carries out tensioning to outer packing on the outer wall of axle sleeve. The utility model solves the problems that a gap is easy to exist between the outer wall and the inner wall of the shaft sleeve in the operation process of the centrifugal pump of the papermaking equipment, the phenomenon of liquid leakage occurs, the occurrence of the problems of leakage, drop leakage and the like is avoided, and the clean production level is improved.
Description
Technical Field
The utility model relates to the technical field of sealing tools, in particular to a centrifugal pump sealing device.
Background
The water consumption of paper making enterprises in the production process is large, and the normal supply of water is particularly important. The double-suction centrifugal pump can be used for conveying clear water or other liquid with physical and chemical properties similar to water, has the advantages of high efficiency, large flow, higher lift and the like, is used for supplying and draining water in pulping and papermaking factories, runs stably and is convenient to install, and the leaked water medium flows out along the gap of the inner wall of the shaft sleeve or the outer wall of the shaft sleeve and is further leaked out of the pump.
The utility model discloses a patent of publication number CN206582166U in the prior art, this scheme includes the fixed surface, the constant head tank, first always sealing surface, first circular arc face that leads, first wedge-shaped sealing surface, lower fixed surface, the spacer bar, the second circular arc that leads, the second wedge-shaped sealing surface, the second is directly sealed, the sealing ring body, go up the fixed surface and be located the upper and lower both ends of sealing ring body respectively with lower fixed surface, the constant head tank is located the fixed surface, first always sealing surface is located between constant head tank and the first wedge-shaped sealing surface, first circular arc face that leads is located the side below of first wedge-shaped sealing surface, the spacer bar is located on the fixed surface down, the second is directly sealed and is located between fixed surface and the second wedge-shaped sealing surface down, the second circular arc that leads is located the side top of second wedge-shaped sealing surface.
The prior devices including the above patents, as they are used, gradually expose the disadvantages of the technology, mainly in the following aspects:
firstly, the water supply double-suction centrifugal pump is frequently in machine seal leakage, and after the machine seal leakage, the flow of the water supply pump is low, so that the use requirement cannot be met.
Secondly, when the mechanical seal is damaged, the maintenance and replacement time is longer, the maintenance difficulty is relatively higher, and the purchase cost of the mechanical seal and the shaft sleeve spare parts is increased.
Thirdly, equipment is frequently damaged, so that the maintenance labor intensity of factory staff is increased, and normal production and operation are not facilitated.
In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model solves the problems that gaps are easy to exist between the outer wall and the inner wall of the shaft sleeve in the prior art, and the phenomenon of liquid leakage occurs, so that the maintenance labor intensity of factory staff is increased.
In order to solve the problems, the utility model provides the following technical scheme:
the centrifugal pump sealing device comprises a shaft sleeve sleeved on a rotating shaft, wherein an inner hole of the shaft sleeve is provided with two inner packing in parallel, the inner wall of the inner packing is provided with an inner sealing ring, the inner ring of the inner sealing ring is propped against the rotating shaft,
two outer packing elements are arranged on the outer wall of the shaft sleeve in parallel, the outer ring of the outer packing elements is propped against the pump body, the inner ring of the outer packing elements is propped against the outer wall of the shaft sleeve,
and an adjusting assembly for tensioning the outer packing is further arranged on the outer wall of the shaft sleeve.
As an optimized scheme, the adjusting component comprises a propping ring corresponding to each outer packing, an inner ring of the propping ring is fixedly connected to the outer wall of the shaft sleeve, one side of the propping ring is further provided with a pressing ring sleeved on the shaft sleeve in a sliding manner, and the outer packing is arranged in an area between the pressing ring and the propping ring.
As an optimized scheme, a fixing ring is fixedly connected to the outer wall of the shaft sleeve, a plurality of adjusting bolts are connected to the fixing ring in a threaded mode, and the tail ends of the adjusting bolts are abutted to the back face of the pressing ring.
As an optimized scheme, the outer ring of the shaft sleeve is also sleeved with a tensioning spring, and the tensioning spring is positioned in the area between the compression ring and the outer packing.
As an optimized scheme, the inner ring of the shaft sleeve close to one end is further provided with a key groove, and the rotating shaft is provided with a key matched with the key groove.
As an optimized scheme, a sealing ring groove is formed in the inner wall of the inner packing, and the sealing ring is clamped in the sealing ring groove.
As an optimized scheme, a gland is fixedly arranged on the outer wall of the other end of the shaft sleeve, and the gland is fixed on the end wall of the shaft sleeve by bolts.
As an optimized scheme, a side sealing ring is arranged between the side wall of the gland and the end wall of the shaft sleeve.
As an optimized scheme, an internal sealing ring is arranged between the inner ring of the gland and the rotating shaft.
As an optimized scheme, side ring grooves for clamping the side sealing rings are respectively arranged between the side walls of the gland and the end walls of the shaft sleeve.
As an optimized scheme, an inner ring groove for clamping the inner sealing ring is formed in the inner ring of the gland.
Compared with the prior art, the utility model has the beneficial effects that:
the outer wall of the shaft sleeve is provided with the outer packing, so that the sealing of the area between the outer wall of the shaft sleeve and the pump body is realized, and because the leakage of the outer part of the shaft sleeve is frequent, the outer packing is provided with the adjusting component for tensioning, when the outer packing is worn, the outer wall of the outer packing and the pump body have a gap, the outer packing can be compressed by utilizing the elasticity of the tensioning spring and the feeding of the adjusting bolt, so that the outer packing expands along the radial direction, the worn gap is counteracted, the automatic compensation type sealing is realized, and the sealing efficiency is improved;
the double sealing is realized by arranging the inner packing and the sealing ring on the inner wall of the shaft sleeve, so that the sealing efficiency of the inner ring of the shaft sleeve is improved;
by arranging the gland, the end part of the shaft sleeve is sealed by utilizing the side sealing ring and the inner sealing ring, so that the sealing efficiency is further improved;
the equipment is convenient to maintain and replace, the leakage treatment mode is simple, the maintenance is very easy, and the labor intensity is reduced.
The normal operation of the equipment is ensured, and the production efficiency is improved; the equipment maintenance frequency is reduced, and the accessory cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1-a shaft sleeve; 2-rotating shaft; 3-inner packing; 4-an inner sealing ring; 5-an outer packing; 6-abutting the ring; 7-a compression ring; 8-a fixed ring; 9-adjusting bolts; 10-tensioning a spring; 11-capping; 12-an inner seal ring; 13-side seal ring; 14-a pump body; 15-bond.
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
As shown in fig. 1, the centrifugal pump sealing device comprises a shaft sleeve 1 sleeved on a rotating shaft 2, two inner packing 3 are arranged in parallel in the inner hole of the shaft sleeve 1, an inner sealing ring 4 is arranged on the inner wall of the inner packing 3, the inner ring of the inner sealing ring 4 is propped against the rotating shaft 2,
two outer packing 5 are arranged on the outer wall of the shaft sleeve in parallel, the outer ring of the outer packing 5 is propped against the pump body, the inner ring of the outer packing 5 is propped against the outer wall of the shaft sleeve 1,
the outer wall of the shaft sleeve 1 is also provided with an adjusting component for tensioning the outer packing 5.
The adjusting component comprises a propping ring 6 corresponding to each outer packing 5, an inner ring of the propping ring 6 is fixedly connected to the outer wall of the shaft sleeve 1, one side of the propping ring 6 is also provided with a pressing ring 7 sleeved on the shaft sleeve 1 in a sliding manner, and the outer packing 5 is arranged in an area between the pressing ring 7 and the propping ring 6.
The outer wall of the shaft sleeve 1 is fixedly connected with a fixing ring 8, a plurality of adjusting bolts 9 are connected to the fixing ring 8 in a threaded manner, and the tail ends of the adjusting bolts 9 are propped against the back surface of the pressing ring 7.
The outer ring of the shaft sleeve 1 is also sleeved with a tensioning spring 10, and the tensioning spring 10 is positioned in the area between the compression ring 7 and the outer packing 5.
The inner ring of the shaft sleeve 1 near one end is also provided with a key 15 groove, and the rotating shaft 2 is provided with a key 15 matched with the key 15 groove.
The inner wall of the inner packing 3 is provided with a sealing ring groove, and the sealing ring is clamped in the sealing ring groove.
A pressing cover 11 is fixedly arranged on the outer wall of the other end of the shaft sleeve 1, and the pressing cover 11 is fixed on the end wall of the shaft sleeve 1 by bolts.
A side seal 13 is provided between the side wall of the gland 11 and the end wall of the sleeve 1.
An inner sealing ring 12 is arranged between the inner ring of the pressing cover 11 and the rotating shaft 2.
Side ring grooves for clamping the side sealing rings 13 are respectively arranged between the side walls of the pressing cover 11 and the end walls of the shaft sleeve 1.
The inner ring of the pressing cover 11 is provided with an inner ring groove for clamping the inner sealing ring 12.
The working principle of the device is as follows:
by arranging the outer packing 5 on the outer wall of the shaft sleeve 1, the sealing of the area between the outer wall of the shaft sleeve 1 and the pump body 14 is realized, and because the leakage of the outer part of the shaft sleeve 1 is frequent, an adjusting component for tensioning the outer packing 5 is arranged, so that when the outer packing 5 is worn, the outer wall of the outer packing 5 and the pump body 14 have a gap, the outer packing 5 can be compressed by utilizing the elasticity of the tensioning spring 10 and the feeding of the adjusting bolt 9, so that the outer packing 5 expands along the radial direction, the worn gap is counteracted, the automatic compensation type sealing is realized, and the sealing efficiency is improved;
the double sealing is realized by arranging the inner packing 3 and the sealing ring on the inner wall of the shaft sleeve 1, so that the sealing efficiency of the inner ring of the shaft sleeve 1 is improved;
by arranging the gland 11, the end part of the shaft sleeve 1 is sealed by utilizing the side sealing ring 13 and the inner sealing ring 12, so that the sealing efficiency is further improved;
the equipment is convenient to maintain and replace, the leakage treatment mode is simple, the maintenance is very easy, and the labor intensity is reduced.
The normal operation of the equipment is ensured, and the production efficiency is improved; the equipment maintenance frequency is reduced, and the accessory cost is saved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.
Claims (8)
1. Centrifugal pump sealing device, its characterized in that: comprises a shaft sleeve (1) sleeved on a rotating shaft (2), two inner packing (3) are arranged in parallel in an inner hole of the shaft sleeve (1), an inner sealing ring (4) is arranged on the inner wall of the inner packing (3), the inner ring of the inner sealing ring (4) is propped against the rotating shaft (2),
two outer packing (5) are arranged on the outer wall of the shaft sleeve in parallel, the outer ring of the outer packing (5) is propped against the pump body (14), the inner ring of the outer packing (5) is propped against the outer wall of the shaft sleeve (1),
the outer wall of the shaft sleeve (1) is also provided with an adjusting component for tensioning the outer packing (5).
2. The centrifugal pump sealing device according to claim 1, wherein: the adjusting assembly comprises a supporting ring (6) corresponding to each outer packing (5), an inner ring of the supporting ring (6) is fixedly connected to the outer wall of the shaft sleeve (1), one side of the supporting ring (6) is further provided with a pressing ring (7) sleeved on the shaft sleeve (1) in a sliding mode, and the outer packing (5) is arranged in an area between the pressing ring (7) and the supporting ring (6).
3. The centrifugal pump sealing device according to claim 2, wherein: the outer wall of the shaft sleeve (1) is fixedly connected with a fixing ring (8), a plurality of adjusting bolts (9) are connected to the fixing ring (8) in a threaded mode, and the tail ends of the adjusting bolts (9) are abutted to the back face of the pressing ring (7).
4. A centrifugal pump sealing device according to claim 3, wherein: the outer ring of the shaft sleeve (1) is also sleeved with a tensioning spring (10), and the tensioning spring (10) is positioned in the area between the compression ring (7) and the outer packing (5).
5. The centrifugal pump sealing device according to claim 4, wherein: the inner ring of the shaft sleeve (1) close to one end is also provided with a key (15) groove, and the rotating shaft (2) is provided with a key (15) matched with the key (15) groove.
6. The centrifugal pump sealing device according to claim 5, wherein: the inner wall of the inner packing (3) is provided with a sealing ring groove, and the sealing ring is clamped in the sealing ring groove.
7. The centrifugal pump sealing device according to claim 6, wherein: the outer wall of the other end of the shaft sleeve (1) is fixedly provided with a pressing cover (11), and the pressing cover (11) is fixed on the end wall of the shaft sleeve (1) by bolts.
8. The centrifugal pump sealing device according to claim 7, wherein: a side sealing ring (13) is arranged between the side wall of the pressing cover (11) and the end wall of the shaft sleeve (1), and an inner sealing ring (12) is arranged between the inner ring of the pressing cover (11) and the rotating shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223129087.1U CN219035106U (en) | 2022-11-24 | 2022-11-24 | Centrifugal pump sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223129087.1U CN219035106U (en) | 2022-11-24 | 2022-11-24 | Centrifugal pump sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219035106U true CN219035106U (en) | 2023-05-16 |
Family
ID=86314683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223129087.1U Active CN219035106U (en) | 2022-11-24 | 2022-11-24 | Centrifugal pump sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219035106U (en) |
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2022
- 2022-11-24 CN CN202223129087.1U patent/CN219035106U/en active Active
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