CN205479343U - Reciprocating type carbon dioxide liquor pump shaft seal device - Google Patents

Reciprocating type carbon dioxide liquor pump shaft seal device Download PDF

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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
Application number
CN201620252783.7U
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Chinese (zh)
Inventor
黄先平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Vocational Institute of Engineering
Original Assignee
Changzhou Vocational Institute of Engineering
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou Vocational Institute of Engineering filed Critical Changzhou Vocational Institute of Engineering
Priority to CN201620252783.7U priority Critical patent/CN205479343U/en
Application granted granted Critical
Publication of CN205479343U publication Critical patent/CN205479343U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Reciprocating carbon dioxide liquid pump shaft sealing device
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.
CN201620252783.7U 2016-03-30 2016-03-30 Reciprocating type carbon dioxide liquor pump shaft seal device Expired - Fee Related CN205479343U (en)

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)

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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