CN212899113U - Mechanical sealing structure of centrifugal pump - Google Patents
Mechanical sealing structure of centrifugal pump Download PDFInfo
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- CN212899113U CN212899113U CN202021712622.4U CN202021712622U CN212899113U CN 212899113 U CN212899113 U CN 212899113U CN 202021712622 U CN202021712622 U CN 202021712622U CN 212899113 U CN212899113 U CN 212899113U
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Abstract
The utility model relates to a mechanical sealing structure of a centrifugal pump, which comprises a flushing fluid pipeline and a cooling fluid pipeline, wherein a discharging port of the cooling fluid pipeline is communicated with an inlet of the flushing fluid pipeline; the mechanical sealing structure of the centrifugal pump comprises a movable ring seat, a second movable ring, a second stationary ring, a centrifugal pump shell, a bolt group, a pump shaft, a pump cover, a mechanical seal ring, a check valve, a circulating pipeline and a second discharge port, wherein a flushing liquid pipeline consists of a first inlet and a first pipeline, a cooling liquid pipeline consists of a second inlet and a second pipeline, the communicating paths of the circulating pipeline, the first inlet and the first pipeline are provided with check valves, and the first inlet and the second inlet are in a closed state.
Description
Technical Field
The utility model belongs to the technical field of centrifugal pump mechanical seal structure and specifically relates to a centrifugal pump mechanical seal structure.
Background
At present, a mechanical seal of a centrifugal pump comprises an inner flushing water channel and a cooling water channel, the cooling water is discharged in a grounding mode, and the defects of high-purity water waste, sewage treatment capacity increase and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to reform transform the internal and external parallel connection of mechanical seal into series connection all the way, reduce the use amount of washing high-purity water, reduce production cost, provide a water economy resource, running cost is low, simple structure, compact's centrifugal pump mechanical seal structure
In order to solve the problems, the utility model provides a mechanical seal structure of a centrifugal pump, which comprises a flushing liquid pipeline and a cooling liquid pipeline, wherein a cooling liquid discharge port of the cooling liquid pipeline is communicated with an inlet of the flushing liquid pipeline; the washing liquid pipeline and the inlet of the cooling liquid pipeline are both in a closed state, the washing liquid pipeline is composed of a first inlet and a first pipeline, the cooling liquid pipeline is composed of a second inlet and a second pipeline, the tail end of the second pipeline is communicated with the first pipeline through a circulating pipeline, and a check valve is arranged on a communicating path of the circulating pipeline, the first inlet and the first pipeline.
The utility model provides a pair of centrifugal pump mechanical seal structure still has following technical characteristic:
furthermore, a one-way valve is arranged at an inlet of the cooling liquid discharge port of the cooling liquid pipeline communicated with the flushing liquid pipeline.
Furthermore, the discharge port of the cooling liquid pipeline is communicated with the inlet of the flushing liquid pipeline, and the communicated pipeline is formed by independent communicating pipelines outside the centrifugal pump shell.
Furthermore, the discharge port of the cooling liquid pipeline is communicated with the inlet of the flushing liquid pipeline, and the communicated pipeline is composed of a communicating groove in the shell of the centrifugal pump.
Further, the mechanical sealing structure of the centrifugal pump comprises a movable ring seat, a second movable ring, a second stationary ring, a centrifugal pump shell, a bolt group, a pump shaft, a pump cover, a mechanical seal ring, a check valve, a circulating pipeline and a second discharge port, wherein a flushing liquid pipeline consists of a first inlet and a first pipeline, a cooling liquid pipeline consists of a second inlet and a second pipeline, the check valve is arranged on a communication path of the circulating pipeline, the first inlet and the first pipeline, the first inlet and the second inlet are in a closed state, and the discharge port is a cooling liquid inlet.
The utility model discloses following beneficial effect has: the utility model changes the two parallel-connection paths of the inner and the outer of the mechanical seal into one series-connection path, reduces the usage amount of the high-purity water, reduces the production cost, and has the characteristics of water resource saving, low operation cost, simple structure and compact volume; the following points are provided by combining specific technical means:
firstly, the mechanical sealing structure is simple in structure, can be applied and popularized by combining various scenes, reduces the use amount of high-purity water for washing by transforming the inner and outer parallel connection paths of the mechanical seal into a series connection path, is low in transformation cost, depends on the prior art and mature products and new products in the prior art, can be directly applied, does not damage the structure of the original product, and can be independently provided with a pipeline outside a pump body for auxiliary circulation besides being internally provided with a new communication pipeline; secondly, the difference between the invention and the prior art is mainly that before the technology of the invention is reformed and applied, the original machine seal is sealed at two end faces, cooling water enters a sealing cavity through a second inlet and a second pipeline to cool heat generated by friction of the movable ring and the static ring, namely, the friction heat of the second movable ring and the friction heat of the first stationary ring and the first movable ring, and the cooling water is discharged from a second discharge port to take away the heat generated by friction; flushing water enters the machine seal ring from the first inlet and the first pipeline to prevent material particles from gathering to the machine seal side; after the invention is reformed and applied, a cooling liquid water inlet and a flushing inlet are both closed, namely a first inlet and a second inlet are closed, so that cooling water enters a cavity cooling dynamic and static ring from a second discharge port, enters the first inlet and the first pipeline through an added external pipeline or an internal circulating pipeline, and is reused as flushing water to achieve the purpose of flushing, and a check valve is added to prevent system slurry from entering a sealing cavity to burn machine seals; the device has the advantages of simple structure, high utilization rate, good effect and water resource saving of more than 30%.
Drawings
FIG. 1 is a cross-sectional view of a prior art mechanical seal structure for a centrifugal pump;
fig. 2 is a sectional view of a mechanical seal structure of a centrifugal pump of the present invention;
in the figure: 1. The centrifugal pump comprises a moving ring seat 2, a second moving ring 3, a second stationary ring 4, a first inlet 5, a first pipeline 6, a centrifugal pump shell 7, a second inlet 8, a second pipeline 9, a bolt group 10, a pump shaft 11, a pump cover 12, a machine seal ring 13, a check valve 14, a circulating pipeline 15, a second discharge port 16, a first stationary ring 17 and a first moving ring.
Detailed Description
The invention will be described in detail below with reference to the accompanying drawings and with reference to embodiments, it being noted that the embodiments and features of the embodiments can be combined with each other without conflict.
FIG. 1 is a cross-sectional view of a prior art mechanical seal structure for a centrifugal pump;
the utility model provides a mechanical seal structure of a centrifugal pump, as shown in figure 2, which comprises a flushing liquid pipeline and a cooling liquid pipeline, wherein a cooling liquid discharge port of the cooling liquid pipeline is communicated with an inlet of the flushing liquid pipeline;
the inlets of the flushing liquid pipeline and the cooling liquid pipeline are both in a closed state, so that water is saved, the cooling liquid is recycled as flushing liquid, the water is saved, and the waste of water resources is reduced;
the flushing liquid pipeline consists of a first inlet 4 and a first pipeline 5, the cooling liquid pipeline consists of a second inlet 7 and a second pipeline 8, the tail end of the second pipeline 8 is communicated with the first pipeline 5 through a circulating pipeline 14, and a check valve 13 is arranged on a communication path of the circulating pipeline 14, the first inlet 4 and the first pipeline 5; through two the way transformation of connecting in parallel the inside and outside of mechanical seal for establishing ties one way, reduce the use amount that washes high-purity water, the check valve of increase prevents that system's thick liquids from getting into sealed chamber burning loss machine and sealing.
When the mechanical sealing structure is implemented, firstly, the structure is simple, the mechanical sealing structure can be applied and popularized by combining various scenes, the inner and outer parallel connection paths of the mechanical sealing structure are transformed into a series connection path, the use amount of high-purity water for washing is reduced, the transformation cost is low, the mechanical sealing structure can be directly applied by relying on the prior art and mature products and new products in the prior art, the structure is simple, the structure of the original product is not damaged, and besides a new communicating pipeline is arranged in the mechanical sealing structure, a pipeline can be independently arranged outside a pump body for auxiliary circulation; secondly, the difference between the invention and the prior art is mainly that, before the technology of the invention is reformed and applied, the original machine seal is sealed at two end faces, cooling water enters a sealing cavity from a second inlet 7 and a second pipeline 8 to cool heat generated by friction of the movable ring and the static ring, namely, the friction heat of the second fixed ring 3 and the second movable ring 2 and the friction heat of the first fixed ring 16 and the first movable ring 17, and the cooling water is discharged from a second discharge port 15 to take away the heat generated by friction; flushing water enters the machine seal ring 12 from the first inlet 4 and the first pipeline 5 to prevent material particles from gathering to the machine seal side; after the invention is reformed and applied, a cooling liquid water inlet and a flushing inlet are closed, namely a first inlet 4 and a second inlet 7 are closed, so that cooling water enters a cavity cooling static ring from a second discharge port 15, enters the first inlet 4 and a first pipeline 5 through an added external pipeline or an added internal circulating pipeline 14, and is reused as flushing water to achieve the purpose of flushing, and a check valve 13 is added to prevent system slurry from entering a sealed cavity and burning machine seals; the device has the advantages of simple structure, high utilization rate, good effect and water resource saving of more than 30%.
In an embodiment of the application, the entrance that the discharge port of coolant liquid pipeline communicate the flush fluid pipeline be provided with the check valve, the check valve that increases prevents that system's thick liquids from getting into the seal chamber and burning out the mechanical seal.
In one embodiment of the present application, the discharge port of the coolant in the coolant line is connected to the inlet of the flushing liquid line, and the connected line is an independent connected line outside the centrifugal pump casing; the mode of recycling is various, and independent pipeline is favorable to directly reforming transform current product, practices thrift the cost, and it is convenient to reform transform, need not to change the processing once more to the spare part of pump machine.
In one embodiment of the present application, the discharge port of the cooling liquid in the cooling liquid pipeline is communicated with the inlet of the flushing liquid pipeline, and the communicated pipeline is formed by a communicated groove in the centrifugal pump shell; the groove-free type steel pipe joint is suitable for new products, a channel is formed by direct grooving, the reconstruction application cost is high, but the volume is compact, no external pipeline is arranged, the maintenance is convenient, and the damage is not easy.
In an embodiment of the present application, the mechanical seal structure of the centrifugal pump includes a rotating ring seat 1, a second rotating ring 2, a second stationary ring 3, a centrifugal pump casing 6, a bolt set 9, a pump shaft 10, a pump cover 11, a mechanical seal ring 12, a check valve 13, a circulation pipe 14, and a second discharge port 15, the flushing liquid pipe is composed of a first inlet 4 and a first pipe 5, the cooling liquid pipe is composed of a second inlet 7 and a second pipe 8, the communication path of the circulation pipe 14, the first inlet 4, and the first pipe 5 is provided with the check valve 13, the first inlet 4 and the second inlet 7 are in a closed state, the discharge port 15 is a cooling liquid inlet, the first inlet and the second inlet are closed, so that cooling water enters the cavity cooling rotating ring from the second discharge port, and enters the first inlet and the first pipe through an additional external pipe or an internal circulation pipe, the purpose of flushing is achieved by using the flushing water again, and the added check valve prevents system slurry from entering the sealing cavity and burning the mechanical seal.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. The utility model provides a centrifugal pump mechanical seal structure, includes flush fluid pipeline and coolant liquid pipeline, its characterized in that: the discharge port of the cooling liquid pipeline is communicated with the inlet of the flushing liquid pipeline;
the washing liquid pipeline and the cooling liquid pipeline are both in a closed state, the washing liquid pipeline is composed of a first inlet (4) and a first pipeline (5), the cooling liquid pipeline is composed of a second inlet (7) and a second pipeline (8), the tail end of the second pipeline (8) is communicated with the first pipeline (5) through a circulating pipeline (14), and a check valve (13) is arranged on the communication path of the circulating pipeline (14), the first inlet (4) and the first pipeline (5).
2. A centrifugal pump mechanical seal structure according to claim 1, wherein: and a check valve is arranged at an inlet of the cooling liquid discharge port of the cooling liquid pipeline communicated with the flushing liquid pipeline.
3. A centrifugal pump mechanical seal structure according to claim 1, wherein: the discharge port of the cooling liquid pipeline is communicated with the inlet of the flushing liquid pipeline, and the communicated pipeline is an independent communicating pipeline outside the centrifugal pump shell.
4. A centrifugal pump mechanical seal structure according to claim 1, wherein: the discharge port of the cooling liquid pipeline is communicated with the inlet of the flushing liquid pipeline, and the communicated pipeline is composed of a communicating groove in the shell of the centrifugal pump.
5. A centrifugal pump mechanical seal structure according to claim 1, wherein: the mechanical sealing structure of the centrifugal pump comprises a moving ring seat (1), a second moving ring (2), a second static ring (3), a centrifugal pump shell (6), a bolt group (9), a pump shaft (10), a pump cover (11), a machine seal ring (12), a check valve (13), a circulating pipeline (14) and a second discharge port (15), wherein a flushing liquid pipeline consists of a first inlet (4) and a first pipeline (5), a cooling liquid pipeline consists of a second inlet (7) and a second pipeline (8), the check valve (13) is arranged on a communication path of the circulating pipeline (14), the first inlet (4) and the first pipeline (5), and the first inlet (4) and the second inlet (7) are in a closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021712622.4U CN212899113U (en) | 2020-08-17 | 2020-08-17 | Mechanical sealing structure of centrifugal pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021712622.4U CN212899113U (en) | 2020-08-17 | 2020-08-17 | Mechanical sealing structure of centrifugal pump |
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| Publication Number | Publication Date |
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| CN212899113U true CN212899113U (en) | 2021-04-06 |
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| CN202021712622.4U Active CN212899113U (en) | 2020-08-17 | 2020-08-17 | Mechanical sealing structure of centrifugal pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000477A1 (en) * | 2021-07-23 | 2023-01-26 | 华工(江门)机电有限公司 | Mounting seat, electric-motor mounting structure, and inline pump |
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2020
- 2020-08-17 CN CN202021712622.4U patent/CN212899113U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000477A1 (en) * | 2021-07-23 | 2023-01-26 | 华工(江门)机电有限公司 | Mounting seat, electric-motor mounting structure, and inline pump |
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