CN203022995U - Reciprocating pump shaft sealing device - Google Patents
Reciprocating pump shaft sealing device Download PDFInfo
- Publication number
- CN203022995U CN203022995U CN 201220634482 CN201220634482U CN203022995U CN 203022995 U CN203022995 U CN 203022995U CN 201220634482 CN201220634482 CN 201220634482 CN 201220634482 U CN201220634482 U CN 201220634482U CN 203022995 U CN203022995 U CN 203022995U
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- Prior art keywords
- ring
- pump shaft
- sealing
- seal
- pump
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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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- Details Of Reciprocating Pumps (AREA)
- Sealing Devices (AREA)
Abstract
The utility model relates to the field of sealing devices, in particular to a reciprocating pump shaft sealing device which is composed of a pump shaft, a pump case, a moving ring assembly, a stationary ring assembly, a moving ring sealing ring, a stationary ring sealing ring and a spring piece, wherein the moving ring assembly is installed on the pump shaft, the stationary ring assembly is installed on the pump case, the moving ring sealing ring is arranged on the moving ring assembly, the stationary ring sealing ring is arranged on the stationary ring assembly, the spring piece is arranged at the front end of the pump shaft, and the spring piece is connected with the pump case and the pump shaft. Due to pressure changes of the spring piece, a layer of thin liquid membrane is formed between a moving ring and a stationary ring so that the lubricating effect and the sealing effect are achieved. Due to a shaft sealing method, a pump is excellent in performance, long in service life and low in power consumption.
Description
Technical field
The utility model relates to the seal arrangement field, concretely, relates to a kind of reciprocating pump shaft sealer.
Background technique
Shaft seal is to prevent that pump shaft and housing place from leaking and the seal arrangement that arranges is a kind of friction sealed or stuffing box, in order to prevent the leak of liquid between compressor or other conveying equipment for fluid substances axles and bearing.Type of shaft sealing commonly used has packing seal, mechanical seal and power envelope.Stuffing seal claims again stuffing box.It is mainly by between stuffing box shell, shaft stuffing box shell and shaft seal, to reach the effect of sealing.Mechanical seal is mainly to be made of rotating ring and another stationary ring that is fixed on pump case that is contained in pump shaft.The end face mat spring forces of two rings abut against each other and play the effect of sealing.Rotating ring is generally made with hard metal material, and stationary ring is made with nonmetallic material such as phenolic plastic.When mechanical seal is installed, require the interannular rubbing surface to want good lapping-in, and by adjusting spring pressure, form the skim liquid film between two rubbing surfaces, reach the effect of lubricated and sealing preferably.The characteristics of mechanical seal are that function admirable, long service life, power consumpiton are less, but the processing of its parts, installation requirement are higher.Dynamic seal can be divided into the sealing of notopodium formula and sub-impeller seal two classes.During pump work, the centrifugal action of backrest blade (or sub-propeller) makes the pressure medium at shaft seal place drop to normal pressure or negative pressure state, and pump is not in use leaked.During parking, centrifugal force disappears, and the seal action of back blade (or sub-propeller) lost efficacy, and at this moment played seal action by parking sealing arrangement.The dynamic seal reliable performance, low price, easy to maintenance, be applicable to carry and contain the more medium of solid particle, as the ore slurry pump in phosphoric acid industry, shurry pump etc.Shortcoming is that power loss is large than mechanical seal, and the life-span of its parking sealing arrangement is shorter.
The shaft seal of reciprocating pump adopts packing seal usually.Gland sealed is simple in structure, low price, easy to maintenance.But leakage rate is large, power consumption penalty is large.Therefore packing seal is for delivery of general medium, as water etc.; Generally be not suitable for oil and chemical medium, particularly can not be used in valuable, explosive and poisonous medium.
The model utility content
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of reciprocating pump shaft sealer, and this seal arrangement adopts mechanical seal, and function admirable improves pump shaft working life, and consumed power is few.
Technological scheme to be solved in the utility model is as follows:
A kind of reciprocating pump shaft sealer is made of pump shaft, pump case, moving ring assembly, static components, seal ring of moving ring, stationary ring seal ring, spring part; Moving ring assembly is arranged on pump shaft, and static components is arranged on pump case, and seal ring of moving ring is arranged on moving ring assembly, and the stationary ring seal ring is arranged on static components, and spring part is at the pump shaft front end, and spring part connects pump case and pump shaft.
Described moving ring assembly is made of metallic material.
Described static components is made of nonmetallic material.
Described seal ring of moving ring is one.
Described stationary ring seal ring is two.
The end face mat spring force of moving ring assembly abuts against each other and plays the effect of sealing, by adjusting the spring pressure of spring part, forms one deck thin electrolyte film between moving ring assembly and static components, reaches lubricated and sealing effect.
The utility model has the advantage of: original reciprocating pump shaft end seal and sealing means are carried out combination, improve existing reciprocating pump shaft sealing mode, adopt mechanical seal to replace packing seal, the mechanical seal mode of using moving ring assembly and static components to combine, change by spring part pressure, make to form one deck thin electrolyte film between rotating ring and stationary ring, reach lubricated and sealing effect.This shaft seal mode makes that pump performance is good, long service life, power consumpiton are less.
Description of drawings
Fig. 1 is a kind of structural representation of reciprocating pump shaft sealer.
Reference character shown in Figure 1 is as follows: seal ring of moving ring 1, moving ring assembly 2, spring part 3, pump case 4, stationary ring seal ring 5, static components 6, pump shaft 7.
Embodiment
A kind of reciprocating pump shaft sealer is made of moving ring assembly 2, static components 6, seal ring of moving ring 1, stationary ring seal ring 5, pump shaft 7, pump case 4, spring part 3; Moving ring assembly 2 is arranged on pump shaft 7, and static components 6 is arranged on pump case 4, and seal ring of moving ring 1 is arranged on moving ring assembly 2, and stationary ring seal ring 5 is arranged on static components 6, and spring part 3 is at pump shaft 7 front ends, and spring part 3 connects pump case 4 and pump shaft 7.
Described moving ring assembly 2 is made of metallic material.
Described static components 6 is made of nonmetallic material.
Described seal ring of moving ring 1 is one.
Described stationary ring seal ring 6 is two.
The end face mat spring force of moving ring assembly 2 abuts against each other and plays the effect of sealing, by adjusting the spring pressure of spring part 3, forms one deck thin electrolyte film between moving ring assembly 2 and static components 6, reaches lubricated and sealing effect.
Claims (2)
1. a reciprocating pump shaft sealer, is characterized in that: be made of pump shaft, pump case, moving ring assembly, static components, seal ring of moving ring, stationary ring seal ring, spring part; Moving ring assembly is arranged on pump shaft, and static components is arranged on pump case, and seal ring of moving ring is arranged on moving ring assembly, and the stationary ring seal ring is arranged on static components, and spring part is at the pump shaft front end, and spring part connects pump case and pump shaft.
2. a kind of reciprocating pump shaft sealer according to claim 1, it is characterized in that: described seal ring of moving ring is one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634482 CN203022995U (en) | 2012-11-27 | 2012-11-27 | Reciprocating pump shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634482 CN203022995U (en) | 2012-11-27 | 2012-11-27 | Reciprocating pump shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022995U true CN203022995U (en) | 2013-06-26 |
Family
ID=48646984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220634482 Expired - Fee Related CN203022995U (en) | 2012-11-27 | 2012-11-27 | Reciprocating pump shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022995U (en) |
-
2012
- 2012-11-27 CN CN 201220634482 patent/CN203022995U/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: 20130626 Termination date: 20131127 |