CN2628756Y - Wearproof, long service life, high corrosion resistant, and low cost plunger piston - Google Patents
Wearproof, long service life, high corrosion resistant, and low cost plunger piston Download PDFInfo
- Publication number
- CN2628756Y CN2628756Y CN 02200626 CN02200626U CN2628756Y CN 2628756 Y CN2628756 Y CN 2628756Y CN 02200626 CN02200626 CN 02200626 CN 02200626 U CN02200626 U CN 02200626U CN 2628756 Y CN2628756 Y CN 2628756Y
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- plunger
- tube
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- service life
- compound
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A plunger structure of a plunger pump includes a metallic plunger (5), a plunger tube and a nut (1), the plunger tube is sleeved and penetrated on a shaft neck of a metallic plunger, and fastened from the front end through the nut (1), thereby forming a fission plunger structure, the structure is characterized in that the plunger tube consists of a tubular base metal (7) and a ceramic layer (6) smeared on the base metal column surface, thereby forming the structure of a compound plunger tube (3). The utility model is characterized in that: firstly, compared with the existing plunger plated hard alloy, the service life of the plunger is over 10 times of the existing plunger service life; Secondly, compared with a whole ceramic tube plunger, the cost can be reduced to 30 percent; thirdly, the service life of the seal part can be extended, and the technical requirement of the seal part is reduced; fourthly, the power consumption of the implements can be decreased.
Description
Technical field
The utility model relates to the axial or radial plunger pump in the mechanical engineering, a kind of piston structure in the particularly this plunger pump.
Background technique
Plunger is the core component of plunger pump, and its structure and performance directly influence the quality of plunger pump.At present, the plunger of domestic plunger pump mostly is the bulk metal structure or is coated with hard alloy layer on the working surface of bulk metal structure.Although the plunger of this class form is simple in structure, easily manufactured, cost is low, but have following shortcoming: 1, plunger wears no resistance, easily by the impurity plucking in the working medium, thereby wearing and tearing Sealing, destroy the sealability of sealing pair, will cause degradation problem under working medium leakage and the unit working pressure in a short time.2, metal surface and Sealing coefficient of contact friction are bigger, cause the premature wear of Sealing easily, and the result has higher requirement to Sealing on the one hand, has increased the power consumption of facility on the other hand.3, be difficult to resolve the anterior working medium of plunger certainly and climb the problem of scurrying to the drive cassette of plunger rear portion, therefore cause actuator to damage easily because of lubricating condition worsens.4, because coating and plunger parent are the metallic material of unlike material, there is the problem of electrode corrosion in the work, so some corrosivity working medium of incompatibility.
Mostly for dividing body structure, the anterior part that contacts with working medium and Sealing of plunger all adopts integrated type (full medium) stoneware pipe structure to the plunger of external high-grade plunger pump, and metal plunger is then adopted at the rear portion of working in drive cassette.Although this structural type can solve above-mentioned four technical problems preferably, the deficiency that exists is: 1, because ceramic material properties is more crisp, if correlated parts design and assemble improperly causes that easily stoneware pipe is broken or cracks, thereby causes the facility fault.2, because stupalith and processing cost far above common metal, cause the plunger of this form to cost an arm and a leg, the domestic user is beyond affordability.For this reason, the utility model absorbs the advantage of above-mentioned two kinds of plungers, and from improving the angle of structure, it is good to have proposed a kind of wear resistance and corrosion resistance, and the plunger design that the life-span is long and cost is low is to overcome above-mentioned deficiency.
Summary of the invention
For achieving the above object, the technical solution adopted in the utility model is: a kind of high abrasion, long lifetime, high anti-corrosion, plunger cheaply, comprise metal plunger, plunger tube and nut, plunger tube is set on the axle journal of metal plunger front portion, and fastening by nut from front end, constitute split type piston structure with this.Described plunger tube is formed by tubular metal parent and the ceramic layer that is sprayed on the parent external cylindrical surface, constitutes compound plunger tubular construction with this.
Related content and change interpretation in the technique scheme are as follows:
1, in the such scheme, come off when being hit for fear of the sprayfused coating end, can be respectively equipped with the bulge loop structure in tubular metal parent two ends outer rim, form one section continuous annular groove between two bulge loops, ceramic layer is sprayed in the annular groove, and combines the whole cylndrical surface of formation with two bulge loop end faces.
2, in the such scheme, in order to guarantee sealing effect, between the axle journal of the inner edge of compound plunger tube and metal plunger front portion, be provided with " O " shape seal ring.
3, in the such scheme, to climb the working medium of scurrying out in order effectively intercepting, can be provided with a rank at the axle journal root of metal plunger front portion, an end of compound plunger tube leans against on the end face on a rank by pad.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, because compound plunger tube of the utility model and working medium and Sealing contact segment are pottery, its hardness height, wear resistance is good, so increased substantially the working life of plunger.General its operating life is more than 10 times of plating cemented carbide plunger.
2, because pottery is little with the friction factor of Sealing, thus the working life of Sealing can be prolonged, and can reduce the technical requirements of Sealing, reduce the facility power consumption.
3, because ceramic corrosion resisting property own is good, belong to simultaneously nonmetallic material again, therefore do not have the electrode corrosion problem, and the parent of compound plunger tube can be selected the suitable metal of corrosion resistance for use according to different working mediums, thereby make the utility model plunger can adapt to various corrosivity working mediums.
4, because the ceramic consumption of the compound plunger tube of the utility model and ceramic amount of finish only are respectively about 10% and 40% of whole (full medium) stoneware pipe, so the former cost can be reduced to below 30% of the latter.
5, because the utility model intercepts and climbs the working medium of scurrying out by setting up pad, climb the problem of scurrying to the drive cassette of plunger rear portion so can effectively solve the anterior working medium of plunger.
6, because the tubulose parent of compound plunger is that metallic material is made, so there is not the brittle failure problem.
Description of drawings
Accompanying drawing 1 cuts open figure for the utility model structure;
Accompanying drawing 2 is the utility model plan view.
In the above accompanying drawing: 1, nut; 2, " O " shape seal ring; 3, compound plunger tube; 4, pad; 5, metal plunger; 6, ceramic layer; 7, tubular metal parent; 8, bulge loop.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: referring to attached illustrated in figures 1 and 2, a kind of high abrasion, long lifetime, high anti-corrosion, plunger cheaply are made up of metal plunger 5, compound plunger tube 3, nut 1, pad 4 and " O " shape seal ring 2.Metal plunger 5 front portions are provided with axle journal, and compound plunger tube 3 is set on the axle journal, and an end of compound plunger tube 3 leans against by pad 4 on the end face on 5 rank of metal plunger, and the other end is fastening from front end by nut 1, constitutes split type piston structure with this.Described compound plunger tube 3 is formed by tubular metal parent 7 and the ceramic layer 6 that is sprayed on the parent external cylindrical surface, constitutes composite structure with this.Come off when being hit for fear of ceramic coated layer 6 end, be respectively equipped with bulge loop 8 structures in tubular metal parent 7 two ends outer rims, form one section continuous annular groove between two bulge loops 8, ceramic layer 6 is sprayed in the annular groove, and combines the whole cylndrical surface of formation with two bulge loops, 8 end faces.In order to guarantee the sealing effect of compound plunger tube 3 and metal plunger 5 sockets, between the axle journal of the inner edge of compound plunger tube 3 and metal plunger 5 front portions, be provided with " O " shape seal ring 2.
Compound plunger tube processing method in the present embodiment has two kinds: first kind is to process compound plunger tube parent blank (leaving allowance for finish) earlier, ceramic coated again, at last each one of compound plunger tube is machined to the size of requirement.Second kind is the size that earlier compound plunger tube parent (except that ceramic coated) is machined to requirement, ceramic coated then, at last ceramic coated part is machined to the size of requirement.
Claims (4)
1, a kind of high abrasion, long lifetime, high anti-corrosion, plunger cheaply, comprise metal plunger [5], plunger tube and nut [1], plunger tube is set on the anterior axle journal of metal plunger [5], and it is fastening from front end by nut [1], constitute split type piston structure with this, it is characterized in that: plunger tube is formed by tubular metal parent [7] and the ceramic layer [6] that is sprayed on the parent external cylindrical surface, constitutes compound plunger tube [3] structure with this.
2, plunger according to claim 1, it is characterized in that: described tubular metal parent [7] two ends outer rim is respectively equipped with bulge loop [8] structure, form one section continuous annular groove between two bulge loops [8], ceramic layer [6] is sprayed in the annular groove, and combines the whole cylndrical surface of formation with two bulge loops [8] end face.
3, plunger according to claim 1 is characterized in that: be provided with " O " shape seal ring [2] between the axle journal of the inner edge of described compound plunger tube [3] and metal plunger [5] front portion.
4, plunger according to claim 1 is characterized in that: the anterior axle journal root of described metal plunger [5] is provided with a rank, and an end of compound plunger tube [3] leans against on the end face on a rank by pad [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02200626 CN2628756Y (en) | 2002-01-11 | 2002-01-11 | Wearproof, long service life, high corrosion resistant, and low cost plunger piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02200626 CN2628756Y (en) | 2002-01-11 | 2002-01-11 | Wearproof, long service life, high corrosion resistant, and low cost plunger piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2628756Y true CN2628756Y (en) | 2004-07-28 |
Family
ID=34238039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02200626 Expired - Fee Related CN2628756Y (en) | 2002-01-11 | 2002-01-11 | Wearproof, long service life, high corrosion resistant, and low cost plunger piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2628756Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344083B (en) * | 2008-03-10 | 2010-06-16 | 熊颖申 | Novel piston used in plunger type water pump |
| CN115319627A (en) * | 2022-09-06 | 2022-11-11 | 德清创智科技股份有限公司 | High-pressure pump plunger with composite coating and friction stress resistant structure and manufacturing method thereof |
-
2002
- 2002-01-11 CN CN 02200626 patent/CN2628756Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344083B (en) * | 2008-03-10 | 2010-06-16 | 熊颖申 | Novel piston used in plunger type water pump |
| CN115319627A (en) * | 2022-09-06 | 2022-11-11 | 德清创智科技股份有限公司 | High-pressure pump plunger with composite coating and friction stress resistant structure and manufacturing method thereof |
| CN115319627B (en) * | 2022-09-06 | 2024-03-22 | 德清创智科技股份有限公司 | High-pressure pump plunger with composite coating and friction stress resistant structure and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |