CN205479343U - Reciprocating type carbon dioxide liquor pump shaft seal device - Google Patents
Reciprocating type carbon dioxide liquor pump shaft seal device Download PDFInfo
- Publication number
- CN205479343U CN205479343U CN201620252783.7U CN201620252783U CN205479343U CN 205479343 U CN205479343 U CN 205479343U CN 201620252783 U CN201620252783 U CN 201620252783U CN 205479343 U CN205479343 U CN 205479343U
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- carbon dioxide
- piston rod
- liquid pump
- liquor pump
- Prior art date
- 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)
Abstract
The utility model discloses a reciprocating type carbon dioxide liquor pump shaft seal device installs between the pump body rear end of liquor pump cavity inner wall and piston rod, and the cylinder liner of liquor pump is fixed at inner wall of the pump body and piston rod sliding fit, the shaft seal device carbon fiber that two sets of intervals set up around being located between cavity inner wall and the piston rod pack, be equipped with the spacer ring between two sets of carbon fibers pack, the cavity rear end is connected with the gland nut who gives the carbon fiber and pack and apply the axial packing force. The utility model discloses a set up two sets of carbon fibers and pack, utilize the carbon fiber characteristics such as the high strength that has, high -modulus, low -density, high temperature resistant, stand wear and tear, chemically -resistant property ability of packing, reduced sealing filler's wearing and tearing effectively, improved the leakproofness of carbon dioxide liquor pump better, simple structure, the maintenance cost is hanged down.
Description
Technical field
This utility model relates to a kind of reciprocating carbon dioxide liquid pump shaft sealing device.
Background technology
Reciprocating carbon dioxide liquid pump is the capital equipment for carbon dioxide charging system, its work purpose
It is to be filled with carbon dioxide steel cylinder after the liquid CO 2 pressurization in storage tank.This pump, due to simple in construction, holds
Easily operation, is widely used in gas filling station, but this Pump Shaft Seal position leakage problem usually perplexs much use
Family, causes substantial amounts of carbon dioxide to waste, and also have impact on surrounding devices and working environment simultaneously.
Analysis of The Leakage: sealing rapid failure is the main cause causing leakage.This pump seal filler is usual
Use V-type and J-type polytetrafluoroethylmaterial material to combine, belong to the lip type filler in shaped packing seal close
Envelope, operation principle is to block by producing elastic-plastic deformation under the self-tightening effect of mechanical compaction power and pressure medium
Fluid leak path.And owing to crosshead slideway and sealed letter axiality deviate permissible value, easily cause work
The circular runout of stopper rod is overproof so that teflon seal filler Fast Wearing, loses sealing function；Separately
Outward, cause the attachments such as small icing granule, dust due to low temperature on the piston rod, also exacerbate the mill of filler
Damage；Meanwhile, molded polytetrafluoroethylarticle filler, when running into the high-pressure medium that sealing easily penetrates, can be because of it
Compressibility and resilience are poor, and affect service life.
Utility model content
The technical problems to be solved in the utility model is: overcome the deficiency in prior art, it is provided that a kind of structure
Simpler, sealing effectiveness the most reciprocating carbon dioxide liquid pump shaft sealing device.
This utility model solves its technical problem and be the technical scheme is that a kind of reciprocating carbon dioxide liquid
Body pump shaft sealing device, is arranged between pump housing rear end cavity inner wall and the piston rod of liquid pump, the cylinder of liquid pump
Set is fixed on pump housing inwall and is slidably matched with piston rod, and described gland seal device includes wall within the cavity and work
The carbon fiber filler that before and after between stopper rod, two groups of spacing are arranged, is provided with spacer ring between two groups of carbon fiber fillers, institute
State the connection of cavity rear end and have the clamp nut giving carbon fiber filler applying axial pressing force.
For ensureing that thrust is uniform, between described clamp nut and front group of carbon fiber filler, it is provided with packing ring.
For preferably improving sealing effectiveness, described rear group is provided with band between carbon fiber filler and cavity wall
Two J-type sealing rings of support ring.
For preventing in use carbon fiber filler from producing infiltration leakage phenomenon, in described carbon fiber filler
It is impregnated with politef.
The beneficial effects of the utility model are: this utility model, by arranging two groups of carbon fiber fillers, utilizes carbon
High intensity that fiberfill has, high-modulus, low-density, high temperature resistant, wear-resistant, chemical resistance etc.
Feature, significantly reduces the abrasion of airtight and watertight padding, preferably improves the sealing of carbon dioxide liquid pump,
Simple in construction, maintenance cost is low.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
1. pump housing 2. piston rod 3. cylinder sleeve 4. carbon fiber filler 5. spacer ring 6. clamp nut in figure
7. packing ring 8.J RunddichtringO 9. bracing ring 10 cavity
Detailed description of the invention
Presently in connection with accompanying drawing, this utility model is further described.These accompanying drawings are the schematic diagram of simplification
Basic structure of the present utility model is described the most in a schematic way, and therefore it only shows relevant with this utility model
Constitute.
One reciprocating carbon dioxide liquid pump shaft sealing device as shown in Figure 1, is arranged on described liquid pump
Between the pump housing 1 rear end cavity 10 inwall and piston rod 2, the cylinder sleeve 3 of liquid pump be fixed on the pump housing 1 inwall with
Piston rod 2 is slidably matched.
Described gland seal device includes the carbon fiber filler 4 being arranged between cavity 10 inwall and piston rod 2,
Carbon fiber filler 4 is a kind of novel soft packing, and it is to form through high temperature cabonization with artificial silk or tacryl,
There are the features such as high intensity, high-modulus, low-density, high temperature resistant, wear-resistant, chemical resistance, Er Qiezuo
Elasticity and flexibility for compressible filler are the best, but its shortcoming is to have infiltration leakage, so-called infiltration
Leakage, is owing to the microscopic voids of encapsulant is more than medium molecule diameter, makes medium be passed through, therefore
Be impregnated with politef in described carbon fiber filler 4, utilize politef have resistant of high or low temperature,
The feature such as corrosion resistance and self lubricity, can effectively prevent in use carbon fiber filler 4 from producing infiltration and let out
Leakage phenomenon.
Before and after described carbon fiber filler 4 points, two groups are arranged around piston rod 2 spacing, at two groups of carbon fiber fillers
Being provided with spacer ring 5 between 4, the connection of described cavity 10 front end gives carbon fiber filler 4 and applies axial pressing force
Clamp nut 6, between clamp nut 6 and front group of carbon fiber filler 4, be provided with packing ring 7, compression can be made
Power is evenly.
Meanwhile, between rear group of carbon fiber filler 4 and cavity 10 sidewall, it is provided with two J of band bracing ring 9
RunddichtringO 8.
Above-mentioned gland seal device, by arranging two groups of carbon fiber fillers 4, utilize that carbon fiber filler 4 has is high-strength
The features such as degree, high-modulus, low-density, high temperature resistant, wear-resistant, chemical resistance, significantly reduce
The abrasion of airtight and watertight padding, preferably improves the sealing of carbon dioxide liquid pump, simple in construction, safeguards into
This is low.
Above-mentioned embodiment only for technology of the present utility model design and feature are described, its object is to allow familiar
The personage of technique will appreciate that content of the present utility model and is carried out, and can not limit this reality with this
With novel protection domain, all equivalence changes made according to this utility model spirit or modification, all answer
Contain in protection domain of the present utility model.
Claims (4)
1. a reciprocating carbon dioxide liquid pump shaft sealing device, is arranged on the pump housing (1) chamber, rear end of liquid pump
Between body (10) inwall and piston rod (2), the cylinder sleeve (3) of liquid pump be fixed on the pump housing (1) inwall with
Piston rod (2) is slidably matched, and it is characterized in that: described gland seal device include being positioned at cavity (10) inwall with
The carbon fiber filler (4) that before and after between piston rod (2), two groups of spacing are arranged, two groups of carbon fiber fillers (4)
Between be provided with spacer ring (5), described cavity (10) rear end connects and gives carbon fiber filler (4) and apply axially
The clamp nut (6) of thrust.
Reciprocating carbon dioxide liquid pump shaft sealing device the most according to claim 1, is characterized in that: institute
It is provided with packing ring (7) between clamp nut (6) and the front group of carbon fiber filler (4) stated.
Reciprocating carbon dioxide liquid pump shaft sealing device the most according to claim 2, is characterized in that: institute
Two J of band bracing ring (9) it are provided with between rear group of carbon fiber filler (4) and cavity (10) sidewall stated
RunddichtringO (8).
Reciprocating carbon dioxide liquid pump shaft sealing device the most according to claim 1, is characterized in that: institute
It is impregnated with politef in the carbon fiber filler (4) stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620252783.7U CN205479343U (en) | 2016-03-30 | 2016-03-30 | Reciprocating type carbon dioxide liquor pump shaft seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620252783.7U CN205479343U (en) | 2016-03-30 | 2016-03-30 | Reciprocating type carbon dioxide liquor pump shaft seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479343U true CN205479343U (en) | 2016-08-17 |
Family
ID=56648623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620252783.7U Expired - Fee Related CN205479343U (en) | 2016-03-30 | 2016-03-30 | Reciprocating type carbon dioxide liquor pump shaft seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205479343U (en) |
-
2016
- 2016-03-30 CN CN201620252783.7U patent/CN205479343U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190330 |