CN111322186A - Wear-resisting type plunger matching parts - Google Patents
Wear-resisting type plunger matching parts Download PDFInfo
- Publication number
- CN111322186A CN111322186A CN202010224377.0A CN202010224377A CN111322186A CN 111322186 A CN111322186 A CN 111322186A CN 202010224377 A CN202010224377 A CN 202010224377A CN 111322186 A CN111322186 A CN 111322186A
- Authority
- CN
- China
- Prior art keywords
- plunger
- hole
- oil
- wear
- sleeve
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A wear-resistant plunger and barrel assembly comprises a plunger, a gear ring and a plunger sleeve, wherein a first through hole is formed in the plunger sleeve; a second through hole is formed in the lower part of the gear ring, and a third through hole is formed in the upper part of the gear ring; the lower end of the plunger sleeve is sleeved in the third through hole; the plunger is arranged in the first through hole and the second through hole in a sliding mode; a circle of annular indent is processed in the middle of the plunger, and C-shaped chamfers are processed at the upper end and the lower end of the annular indent; an oil storage cavity is arranged below the plunger sleeve, and lubricating oil is filled in the oil storage cavity; and a vertical oil duct and a transverse oil duct are sequentially communicated below the oil storage cavity, and an outlet of the transverse oil duct is communicated with the annular indent. Compared with the prior art, the wear-resistant plunger and barrel assembly has the advantages that the plunger is used for conveying lubricating oil through the oil storage cavity during reciprocating motion, so that the inside of the plunger sleeve and the outer ring of the plunger are lubricated, and the wear caused by the motion friction of the plunger piston is reduced.
Description
Technical Field
The invention relates to the field of fuel injection pump equipment, in particular to a wear-resistant plunger and barrel assembly.
Background
The fuel injection pump supplies fuel through the reciprocating motion of a plunger in a pump body, and because the plunger moves for a long time, abrasion is easily caused after the friction of the outer circular surface of the plunger, and a gap is formed, so that fuel supply leakage is caused, the fuel supply oil pressure is insufficient, and the power output of a diesel engine is insufficient.
Disclosure of Invention
The present invention aims at solving the problem of providing a wear-resistant plunger and barrel assembly. In order to solve the technical problems, the invention adopts the technical scheme that:
a wear-resistant plunger and barrel assembly comprises a plunger, a gear ring and a plunger sleeve, wherein a first through hole is formed in the plunger sleeve; a second through hole is formed in the lower part of the gear ring, and a third through hole is formed in the upper part of the gear ring; the lower end of the plunger sleeve is sleeved in the third through hole; the plunger is arranged in the first through hole and the second through hole in a sliding mode; a circle of annular indent is processed in the middle of the plunger, and C-shaped chamfers are processed at the upper end and the lower end of the annular indent; an oil storage cavity is arranged below the plunger sleeve, and lubricating oil is filled in the oil storage cavity; and a vertical oil duct and a transverse oil duct are sequentially communicated below the oil storage cavity, and an outlet of the transverse oil duct is communicated with the annular indent.
Furthermore, an oil inlet is formed in one side of the upper end of the plunger sleeve, and an oil outlet is formed in the other end of the plunger sleeve.
Furthermore, a gasket is arranged at the bottom of the plunger sleeve and is embedded in the gear ring.
Further, a plunger head is processed at the upper part of the plunger, and a flange is processed at the lower part of the plunger; and wear-resistant layers are arranged outside the plunger head and the flange.
Furthermore, the corners of the vertical oil passage and the corners of the transverse oil passage are transited through arc angles.
Compared with the prior art, the wear-resistant plunger and barrel assembly has the advantages that the plunger is used for conveying lubricating oil through the oil storage cavity during reciprocating motion, so that the inside of the plunger sleeve and the outer ring of the plunger are lubricated, and the wear caused by the motion friction of the plunger piston is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of FIG. 1A;
the oil pump comprises a plunger 1, a plunger 2, a gear ring 3, a plunger sleeve 4, a gasket 5, an oil inlet 6, an oil outlet 7, an annular concave part 8, a C-shaped chamfer 9, an oil storage cavity 10, a vertical oil duct 11, a transverse oil duct 12, a plunger head 13 and a flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below.
As shown in fig. 1 and 2, the wear-resistant plunger and barrel assembly comprises a plunger 1, a gear ring 2 and a plunger sleeve 3, wherein a first through hole is formed in the plunger sleeve 3; a second through hole is formed in the lower portion of the gear ring 2, and a third through hole is formed in the upper portion of the gear ring 2; the lower end of the plunger sleeve 3 is sleeved in the third through hole; the plunger 1 is arranged in the first through hole and the second through hole in a sliding mode; the bottom of the plunger sleeve 3 is provided with a gasket 4, and the gasket 4 is embedded and connected into the gear ring 2; an oil inlet 5 is formed in one side of the upper end of the plunger sleeve 3, and an oil outlet 6 is formed in the other end of the plunger sleeve.
A circle of annular indent 7 is processed in the middle of the plunger 1, and C-shaped chamfers 8 are processed at the upper end and the lower end of the annular indent 7; four oil storage cavities 9 are arranged below the plunger sleeve 3, and the oil storage cavities 9 are uniformly distributed around the central shaft of the plunger 1; lubricating oil is injected into the oil storage tank 9; a vertical oil duct 10 and a transverse oil duct 11 are sequentially communicated below the oil storage cavity 9; the corners of the vertical oil passage 10 and the transverse oil passage 11 are transited through arc angles, wherein the outlet of the transverse oil passage 11 is communicated with the annular indent 7; in the embodiment, the annular indent 7 is arranged, so that the oil storage tank 9 can be conveniently filled with oil, and the friction between the plunger 1 and the plunger sleeve 3 is reduced; by providing the "C" chamfer 8, a large portion of the lubricating oil can be pressed back when the plunger 1 moves downward.
A plunger head 12 is processed at the upper part of the plunger 1, and a flange 13 is processed at the lower part of the plunger 1; and wear-resistant layers are arranged outside the plunger head 12 and the flange 13 and are subjected to nitriding and chromium plating treatment.
The working principle is as follows: the plunger 1 reciprocates in the plunger sleeve 3, when the plunger 1 moves upwards, the pressure at the outer side of the outlet of the transverse oil duct 11 is higher, and the lubricating oil in the oil storage tank 9 is pressed out to lubricate the inside of the plunger sleeve 3; when the plunger 1 moves downward, a higher pressure is formed at the outlet of the lateral oil passage 11 toward the inside, and the lubricating oil is pressed back in preparation for the next lubrication.
The present invention is not limited to the embodiments described above, and those skilled in the art may make modifications or changes within the scope of the disclosure without departing from the spirit of the present invention, so that the scope of the present invention is defined by the appended claims.
Claims (5)
1. A wear-resistant plunger and barrel assembly comprises a plunger, a gear ring and a plunger sleeve, wherein a first through hole is formed in the plunger sleeve; a second through hole is formed in the lower part of the gear ring, and a third through hole is formed in the upper part of the gear ring; the lower end of the plunger sleeve is sleeved in the third through hole; the plunger slides and sets up in through-hole one and through-hole two, its characterized in that: a circle of annular indent is processed in the middle of the plunger, and C-shaped chamfers are processed at the upper end and the lower end of the annular indent; an oil storage cavity is arranged below the plunger sleeve, and lubricating oil is filled in the oil storage cavity; and a vertical oil duct and a transverse oil duct are sequentially communicated below the oil storage cavity, and an outlet of the transverse oil duct is communicated with the annular indent.
2. A wear-resistant plunger and barrel assembly as defined in claim 1, wherein: an oil inlet is formed in one side of the upper end of the plunger sleeve, and an oil outlet is formed in the other end of the plunger sleeve.
3. A wear-resistant plunger and barrel assembly as defined in claim 1, wherein: and a gasket is arranged at the bottom of the plunger sleeve and is embedded and connected in the gear ring.
4. A wear-resistant plunger and barrel assembly as defined in claim 1, wherein: the upper part of the plunger is provided with a plunger head, and the lower part of the plunger is provided with a flange; and wear-resistant layers are arranged outside the plunger head and the flange.
5. A wear-resistant plunger and barrel assembly as defined in claim 1, wherein: the corners of the vertical oil passage and the corners of the transverse oil passage are transited through arc angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010224377.0A CN111322186A (en) | 2020-03-26 | 2020-03-26 | Wear-resisting type plunger matching parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010224377.0A CN111322186A (en) | 2020-03-26 | 2020-03-26 | Wear-resisting type plunger matching parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111322186A true CN111322186A (en) | 2020-06-23 |
Family
ID=71167845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010224377.0A Pending CN111322186A (en) | 2020-03-26 | 2020-03-26 | Wear-resisting type plunger matching parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111322186A (en) |
-
2020
- 2020-03-26 CN CN202010224377.0A patent/CN111322186A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |