CN215370336U - Mechanical sealing device for multistage pump - Google Patents
Mechanical sealing device for multistage pump Download PDFInfo
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- CN215370336U CN215370336U CN202120387951.4U CN202120387951U CN215370336U CN 215370336 U CN215370336 U CN 215370336U CN 202120387951 U CN202120387951 U CN 202120387951U CN 215370336 U CN215370336 U CN 215370336U
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- pump
- transmission seat
- pump body
- ring
- pump shaft
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Abstract
The utility model discloses a mechanical sealing device of a multi-stage pump, which comprises a pump body and a pump shaft, wherein the pump body comprises a water inlet section, a middle section and a water outlet section, the left end and the right end of the pump body are respectively and fixedly connected with a first transmission seat and a second transmission seat, the pump shaft is rotationally connected with the pump body through the first transmission seat and the second transmission seat, the first transmission seat and the second transmission seat are connected with a movable ring through transmission pins, a first-stage impeller and uniformly-arranged secondary impellers are arranged on the outer side of the pump shaft and positioned in the pump body, a balance ring is arranged between the first-stage impeller and the adjacent secondary impellers, end faces of the balance ring and the movable ring are provided with end face seals, and seal rings are arranged between the secondary impellers; the end face seal is made of alumina ceramic, the alumina ceramic is good in corrosion resistance, high in hardness and good in wear resistance, mechanical sealing performance is guaranteed through the end face seal, sealing performance between secondary impellers is further guaranteed through a sealing ring, and the sealing effect of the multistage pump is improved through the heavy sealing effect.
Description
Technical Field
The utility model relates to the technical field of multistage pumps, in particular to a mechanical sealing device of a multistage pump.
Background
The multi-stage pump is a centrifugal pump combining a water inlet section and a water outlet section with a middle section through a pull rod, the output water pressure of the multi-stage pump can be very high, the centrifugal force is obtained by the rotation of an impeller, and when the gas density reaches the working range of the mechanical vacuum pump, the gas is pumped out, so that high vacuum is gradually obtained.
At present, mechanical sealing equipment of a multi-stage pump has certain defects, the structure of the device is complex, and the sealing effect is not good enough, so certain improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the existing defects and provide a mechanical sealing device of a multistage pump, wherein the end face seal is made of alumina ceramic, the alumina ceramic has good corrosion resistance, high hardness and good wear resistance, the mechanical sealing performance is ensured by the end face seal, the sealing performance between secondary impellers is further ensured by the sealing ring, the sealing effect of the multistage pump is improved by the heavy sealing effect, and the problems in the background art can be effectively solved.
In order to achieve the purpose, the utility model provides the following technical scheme: a mechanical sealing device of a multi-stage pump comprises a pump body and a pump shaft, wherein the pump body comprises a water inlet section, a middle section and a water outlet section, a packing cavity is arranged on the left side of the pump body, a packing gland is arranged at an opening of the packing cavity, a tail cap is arranged on the right side of the pump body, a first transmission seat and a second transmission seat are fixedly connected to the left end and the right end of the pump body respectively, the pump shaft is rotatably connected with the pump body through the first transmission seat and the second transmission seat, the first transmission seat and the second transmission seat are connected with a movable ring through transmission pins, a first-stage impeller and uniformly-arranged secondary impellers are arranged on the outer side of the pump shaft and positioned in the pump body, a balance ring is arranged between the first-stage impeller and the adjacent secondary impellers, end faces of the balance ring and the movable ring are provided with end face seals, sealing rings are arranged between the secondary impellers, and the mechanical sealing performance is ensured through the end face seals, the sealing performance between the secondary impellers is further ensured through the sealing rings, and the sealing effect of the multistage pump is improved through the heavy sealing effect.
Furthermore, the excircle of pump shaft is provided with the axle sleeve, the axle sleeve passes through screw fixed connection with first transmission seat and second transmission seat.
Furthermore, the end face seal is made of alumina ceramics, and the alumina ceramics has good corrosion resistance, high hardness and good wear resistance.
Compared with the prior art, the utility model has the beneficial effects that: simple structure, reasonable in design, the material that end face seal adopted is alumina ceramics, utilizes alumina ceramics corrosion resistance good, and the hardness is high, and the wearability is good, guarantees mechanical seal performance through end face seal, further guarantees the sealing performance between the secondary impeller through the sealing ring, through heavily sealed effect, improves the sealed effect of multistage pump.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the portion A of the present invention.
In the figure: the pump comprises a pump body 1, a water inlet section 101, a middle section 102, a water outlet section 103, a filler cavity 104, a filler gland 105, a tail cover 106, a pump shaft 2, a first transmission seat 3, a second transmission seat 4, a shaft sleeve 5, a first-stage impeller 6, a second-stage impeller 7, a 9 end face seal, a 10 balance ring, a 11 sealing ring and a 12 moving ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-2, the present invention provides a technical solution: a mechanical sealing device of a multi-stage pump comprises a pump body 1 and a pump shaft 2, wherein the pump body 1 comprises a water inlet section 101, a middle section 102 and a water outlet section 103, a packing cavity 104 is arranged on the left side of the pump body 1, a packing gland 105 is arranged at an opening of the packing cavity 104, a tail cap 106 is arranged on the right side of the pump body 1, a first transmission seat 3 and a second transmission seat 4 are fixedly connected to the left end and the right end of the pump body 1 respectively, the pump shaft 2 is rotatably connected with the pump body 1 through the first transmission seat 3 and the second transmission seat 4, the first transmission seat 3 and the second transmission seat 4 are connected with a movable ring 12 through transmission pins, a first-stage impeller 6 and secondary impellers 7 which are uniformly arranged are arranged on the outer side of the pump shaft 2 and positioned in the pump body 1, a balance ring 10 is arranged between the first-stage impeller 6 and the adjacent secondary impellers 7, and end faces of the balance ring 10 and the movable ring 12 are provided with end face seals 9, all be provided with sealing ring 11 between the secondary impeller 7, guarantee mechanical seal performance through end face seal 9, further guarantee the sealing performance between the secondary impeller 7 through sealing ring 11, through heavily sealing up the effect, improve the sealed effect of multistage pump.
Further, the excircle of pump shaft 2 is provided with axle sleeve 5, axle sleeve 5 passes through screw fixed connection with first transmission seat 3 and second transmission seat 4.
Furthermore, the end face seal 9 is made of alumina ceramic, and the alumina ceramic has good corrosion resistance, high hardness and good wear resistance.
When in use: the pump shaft 2 that is located into water section 101 can pass through the coupling joint external motor, drive liquid through the motor and flow into water section 101, from play water section 103 outflow again through middle section 102, in the use, the material that end face seal 9 adopted is alumina ceramics, it is good to utilize alumina ceramics corrosion resistance, hardness is high, the wearability is good, guarantee mechanical seal performance through end face seal 9, sealing performance between secondary impeller 7 is further guaranteed through sealing ring 11, through heavy sealing effect, improve the sealed effect of multistage pump, moreover, the steam generator is simple in structure, and reasonable design.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a multistage pump mechanical seal device, includes the pump body and pump shaft, the pump body is provided with the packing chamber including water inlet section, middle section and play water section, the left side of the pump body, the opening part in packing chamber is provided with gland, and the right side of the pump body is provided with tail-hood, its characterized in that: the utility model discloses a pump, including pump shaft, first transmission seat and second transmission seat, the pump shaft is connected with the pump body rotation through first transmission seat and second transmission seat, first transmission seat and second transmission seat have the rotating ring through the driving pin connection, and the outside of pump shaft just is located the inside secondary impeller that is provided with first impeller and evenly sets up of the pump body, be provided with the compensating ring between first impeller and the adjacent secondary impeller, the terminal surface of compensating ring and rotating ring is provided with end face seal, all be provided with the sealing ring between the secondary impeller.
2. A multi-stage mechanical pump seal according to claim 1, wherein: the excircle of pump shaft is provided with the axle sleeve, the axle sleeve passes through screw fixed connection with first transmission seat and second transmission seat.
3. A multi-stage mechanical pump seal according to claim 1, wherein: the end face seal is made of alumina ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120387951.4U CN215370336U (en) | 2021-02-22 | 2021-02-22 | Mechanical sealing device for multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120387951.4U CN215370336U (en) | 2021-02-22 | 2021-02-22 | Mechanical sealing device for multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370336U true CN215370336U (en) | 2021-12-31 |
Family
ID=79622938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120387951.4U Active CN215370336U (en) | 2021-02-22 | 2021-02-22 | Mechanical sealing device for multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370336U (en) |
-
2021
- 2021-02-22 CN CN202120387951.4U patent/CN215370336U/en active Active
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