CN201925220U - Labyrinth auxiliary sealing device of multi-stage pump - Google Patents
Labyrinth auxiliary sealing device of multi-stage pump Download PDFInfo
- Publication number
- CN201925220U CN201925220U CN2010206700743U CN201020670074U CN201925220U CN 201925220 U CN201925220 U CN 201925220U CN 2010206700743 U CN2010206700743 U CN 2010206700743U CN 201020670074 U CN201020670074 U CN 201020670074U CN 201925220 U CN201925220 U CN 201925220U
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- Prior art keywords
- labyrinth
- water inlet
- water
- outlet
- section
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a labyrinth auxiliary sealing device of a multi-stage pump, which comprises a shaft, a shaft sleeve, a labyrinth base, a labyrinth bush, a water inlet(outlet) section, locking screws, a tail cover, packing, a packing gland, a balance pipe and the like. The labyrinth base is connected with the water inlet (outlet) section, the labyrinth bush is fixed on the shaft sleeve via three positioning bolts, threads are formed on the outside of the labyrinth base, the tail cover is arranged at the rail of the water inlet (outlet) section additionally, and the balance pipe is mounted in a hole arranged below the water inlet (outlet) section and then communicated with a water inlet pipe. The labyrinth auxiliary sealing device is arranged in a sealing cavity so that operation pressure in the sealing cavity of the tail cover can be reduced, particles in a mechanical seal or packing medium can be filtered, and meanwhile cost of products can be reduced (a low-grade mechanical seal even the packing or oil seal can be sealed since pressure in the sealing cavity is reduced).
Description
Technical field
The utility model relates to the auxiliary labyrinth-type excluder of a kind of multistage pump.
Background technique
See Fig. 1, when axle seals employing machine envelope or filler, when sealing, other auxiliary seal setting is not set all generally in Seal cage.When this was lower than 2.5Mpa at working pressure of pipeline, the machine envelope can be moved; But when the pressure in the Seal cage surpassed 2.5Mpa, the machine envelope may produce leakage, and machine end-blocking face friction pressure is increased, and caused machine seal heat, simultaneously because there is serial problems such as also can making machine envelope or filler wearing and tearing too early in the particle in the medium.
Summary of the invention
The purpose of this utility model is a kind of auxiliary labyrinth-type excluder of multistage pump that strengthens sealability of design.
The novel technological scheme of this reality is achieved in that the auxiliary labyrinth-type excluder of a kind of multistage pump comprises: axle and on axle sleeve labyrinth seat, labyrinth bush, advance (going out) water section, lock screw, tail-hood, filler, Gland, balance tube; The labyrinth seat with advance (going out) water section and link to each other, labyrinth bush is fixed on the axle sleeve with 3 positioning screwns, labyrinth bush external diameter car has screw thread, entering (going out) water section back increases the tail-hood device, has a hole and be used for installing the logical intake pipe of balance tube below water inlet-outlet segment.
The utility model has the advantages that: can reduce the working pressure in the Seal cage, the medium that enters in machine envelope or the filler is filtered, can also reduce simultaneously product cost (interior pressure has reduced because of Seal cage, just can select a little bit poorer machine envelope for use, or even filler or oil plant).
Description of drawings
Fig. 1 is the assembly structure schematic representation of background technique;
Fig. 2 is an assembly structure schematic representation of the present utility model.
Embodiment
Embodiment 1, as shown in Figure 2, comprise the axle 1 and on axle sleeve 2, labyrinth seat 3, labyrinth bush 4, advance (going out) water section 5, lock screw 6, tail-hood 7, filler 8, Gland 9, balance tube 10; Labyrinth seat 3 with advance (going out) water section 5 and link to each other, 3 positioning screwns 9 of labyrinth bush 4 usefulness are fixed on the axle sleeve 2, labyrinth bush 4 external diameter cars have screw thread, entering (going out) water section 5 back increases tail-hood, is used for fitting machine envelope or filler.Have a hole and be used for installing the logical intake pipes of balance tube 10 entering (going out) water section 5 belows, be used for reducing the pressure in the Seal cage.
Claims (1)
1. the auxiliary labyrinth-type excluder of a multistage pump comprises: axle (1) and on axle sleeve (2), labyrinth seat (3), labyrinth bush (4), water-in and water-out section (5), lock screw (6), tail-hood (7), filler (8), Gland (9), balance tube (10); It is characterized in that: labyrinth seat (3) links to each other with water-in and water-out section (5), labyrinth bush (4) is fixed on the axle sleeve (2) with 3 positioning screwns (9), labyrinth bush (4) external diameter car has screw thread, water-in and water-out section (5) back increases tail-hood (7) device, has a hole in water-in and water-out section (5) below and is used for installing the logical intake pipe of balance tube (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206700743U CN201925220U (en) | 2010-12-15 | 2010-12-15 | Labyrinth auxiliary sealing device of multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206700743U CN201925220U (en) | 2010-12-15 | 2010-12-15 | Labyrinth auxiliary sealing device of multi-stage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925220U true CN201925220U (en) | 2011-08-10 |
Family
ID=44429071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206700743U Expired - Fee Related CN201925220U (en) | 2010-12-15 | 2010-12-15 | Labyrinth auxiliary sealing device of multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925220U (en) |
-
2010
- 2010-12-15 CN CN2010206700743U patent/CN201925220U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20121215 |