CN216241025U - Novel round hole fuel cut-off plunger device - Google Patents
Novel round hole fuel cut-off plunger device Download PDFInfo
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- CN216241025U CN216241025U CN202123010339.4U CN202123010339U CN216241025U CN 216241025 U CN216241025 U CN 216241025U CN 202123010339 U CN202123010339 U CN 202123010339U CN 216241025 U CN216241025 U CN 216241025U
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Abstract
The utility model relates to a novel round hole fuel cut-off plunger device in the technical field of fuel injection, which comprises a device body, wherein the upper end and the lower end of the device body are provided with an inlet and an outlet in a matching way, the outer side of the device body is arranged in a step shape, a through hole is preset in the center of the device body, a round hole plunger penetrates through the through hole, the inner wall of the through hole is provided with an oil-proof tangent plane, and the device body is provided with a mechanical sealing assembly and an oil seal assembly in a matching way with the through hole.
Description
Technical Field
The utility model relates to the technical field of fuel injection, in particular to a plunger.
Background
The existing Chinese patent database discloses a plunger, and the patent application numbers thereof are as follows: CN201810785043.3, filed as follows: 2018.07.17, publication No. CN108953135A, publication date: 2018.12.07, this utility model application discloses a plunger, including plunger main part and piston shoe main part, the one end and the piston shoe main part of plunger main part pass through bulb, ball socket structural connection, and the other end that the plunger was noticed sets up piston ring plunger ring bush and piston ring cutting ferrule, and the device oil feed is not good with the speed of producing oil in work engineering, and the internal seal effect is poor after long-term the use, leads to the emergence of oil leak incident easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel circular hole oil-cut plunger device aiming at the defects in the prior art; the device long service life can carry the fuel effectively at the during operation simultaneously, and when the stop work, the inside oil of through-hole also can be smooth flow, can not cause the too much condition of inside long-pending oil, has improved sealed effect simultaneously, prevents and treats inside gas leakage or the possibility that the fuel leaked, compact structure is reasonable, and appearance design is pleasing to the eye.
The purpose of the utility model is realized as follows: the utility model provides a novel round hole fuel cut-off plunger device, includes device body (1), the upper end and the lower extreme cooperation of device body (1) are provided with import and export, the outside of device body (1) is the echelonment setting, through-hole (2) have been preset in the center department of device body (1), run through being provided with round hole plunger (3) in through-hole (2), the inner wall of through-hole (2) is provided with grease proofing tangent plane (4), device body (1) cooperation through-hole (2) are provided with mechanical seal subassembly and oil blanket subassembly (5).
When the device works, when the device is installed, the circular hole plunger (3) penetrates through the through hole (2) in the device body (1), the sealing shock absorption assembly (6) above the circular hole plunger (3) is connected with the inlet above the device body (1), the mechanical sealing assemblies are correspondingly arranged on the left side and the right side of the outer side of the through hole (2), and the oil sealing assemblies (5) are arranged on the upper side and the lower side of the mechanical sealing assemblies and are fixed, so that the installation is completed; when the device works, fuel enters the through hole (2) through the inlet of the device body (1) while the round hole plunger (3) moves up and down, the sealing damping assembly (6) is connected with the inlet of the device body (1), the pressurizing piece (7) pushes the fuel to move down and is sprayed out from the outlet, the pressurizing piece (7) is connected with the oil-proof tangent plane (4) inside the through hole (2), so the fuel moves down under the influence of air pressure and can be smoothly pushed into the outlet, meanwhile, the sealing damping assembly (6) is larger than the inlet so far, so that the external fuel is prevented from entering the through hole (2), the inlet is in a closed state at the moment, the fuel is sprayed out through the outlet, the situation that the fuel flows backwards or is not supplied timely is avoided, and the mechanical sealing assembly and the oil sealing assembly (5) exist, therefore, the situation that oil leaks inside the device body (1) is not needed to be worried about, and the work is finished.
The utility model has the advantages that: providing a novel round hole oil-cut plunger device; the device long service life can carry the fuel effectively at the during operation simultaneously, and when the stop work, the inside oil of through-hole also can be smooth flow, can not cause the too much condition of inside long-pending oil, has improved sealed effect simultaneously, prevents and treats inside gas leakage or the possibility that the fuel leaked, compact structure is reasonable, and appearance design is pleasing to the eye.
As a further improvement of the present invention, in order to increase the sealing effect inside the through-hole (2) and at the same time increase the shock absorbing effect of the apparatus body (1); the round hole plunger (3) is integrally cylindrical, the upper end of the round hole plunger (3) is in a circular ring shape, a sealing damping assembly (6) is arranged at the joint of the inlet of the device body (1), and the diameter of the sealing damping assembly (6) is larger than that of the inlet of the device body (1).
As a further improvement of the utility model, in order to further improve the oil supply efficiency of the device body (1) during working; the sealing damping assembly is characterized in that a pressurizing piece (7) is arranged below the sealing damping assembly (6) in a matched mode, the diameter of the pressurizing piece (7) is equal to the diameter of an inlet of the device body (1), the outer side face of the pressurizing piece (7) is connected with an oil-proof tangent plane (4) of the through hole (2), and a connecting column (8) is arranged below the pressurizing piece (7) in a matched mode.
As a further improvement of the utility model, the fuel in the through hole (2) is convenient to be pushed out from the outlet; even post (8) are cylindrical setting and the diameter is far less than the diameter of through-hole (2) inner wall, the below of even post (8) is provided with column cap (9), the outstanding of column cap (9) and the export of through-hole (2) and diameter are greater than even post (8) and are less than the diameter of through-hole (2).
As a further improvement of the utility model, in order to improve the sealing effect inside the device body (1), the service life of the device body (1) is prolonged; the mechanical seal assembly comprises a left mechanical seal (10) and a right mechanical seal (11), and the mechanical seal assembly is arranged on two sides of the outer wall of the through hole (2) in a matched mode.
As a further improvement of the utility model, in order to prevent the fuel crab in the device body (1) from flowing to the outside of the device body (1) and causing the reduction of the working efficiency; the oil seal assembly (5) is arranged on the upper side and the lower side of the mechanical seal assembly and is provided with four groups, an oil ring (12) is arranged inside the oil seal assembly (5) in a matched mode, and the oil ring (12) is used for sealing oil for the oil-proof tangent plane (4).
As a further improvement of the utility model, in order to prevent the mechanical seal assembly from displacing during the working process, which causes the seal to fail; the oil seal assembly (5) is fixedly arranged on the upper side and the lower side of the mechanical seal assembly and is fixed, and the oil seal assembly (5), the mechanical seal assembly and the device body (1) are connected in an interference fit mode and can be detached.
As a further improvement of the utility model, in order to prevent the sealing shock-absorbing component (6) from being seriously worn and deformed during the reciprocating motion, thereby causing the reduction of the sealing effect; the two sides of the sealing shock absorption assembly (6) are arranged in a step shape, the upper side of the oil seal assembly (5) is provided with a step (13) in a matching mode, and the step (13) is used for limiting the sealing shock absorption assembly (6).
Drawings
Fig. 1 is a perspective view of the present invention.
FIG. 2 is a schematic view of a round hole plunger of the present invention.
The device comprises a device body 1, a through hole 2, a circular hole plunger 3, an oil-proof section 4, an oil seal assembly 5, a sealing damping assembly 6, a pressurizing piece 7, a connecting column 8, a column cap 9, a left mechanical seal 10, a right mechanical seal 11, an oil ring 12 and a step 13.
Detailed Description
As shown in fig. 1-2, a novel round hole oil-cut plunger device comprises a device body 1, wherein an inlet and an outlet are arranged at the upper end and the lower end of the device body 1 in a matching manner, the outer side of the device body 1 is in a step-shaped arrangement, a through hole 2 is preset at the center of the device body 1, a round hole plunger 3 is arranged in the through hole 2 in a penetrating manner, an oil-proof tangent plane 4 is arranged on the inner wall of the through hole 2, the device body 1 is provided with a mechanical seal assembly and an oil seal assembly 5 in a matching manner with the through hole 2, the round hole plunger 3 is wholly cylindrical, the upper end of the round hole plunger 3 is arranged in a circular ring shape, a seal shock-absorbing assembly 6 is arranged at the inlet connection part of the device body 1 in a matching manner, the diameter of the seal shock-absorbing assembly 6 is larger than that of the inlet of the device body 1, a pressurizing piece 7 is arranged below the seal shock-absorbing assembly 6 in a matching manner, and the diameter of the pressurizing piece 7 is equal to that of the inlet of the device body 1, the outer side surface of the pressure piece 7 is connected with the oil-proof tangent plane 4 of the through hole 2, a connecting column 8 is arranged below the pressure piece 7 in a matching way, the connecting column 8 is cylindrical and has a diameter far smaller than that of the inner wall of the through hole 2, a column head 9 is arranged below the connecting column 8, the protrusion of the column head 9 and the outlet of the through hole 2 have a diameter larger than that of the connecting column 8 and smaller than that of the through hole 2, the mechanical seal assembly comprises a left mechanical seal 10 and a right mechanical seal 11, the mechanical seal assembly is arranged at two sides of the outer wall of the through hole 2 in a matching way, the oil seal assemblies 5 are arranged at the upper side and the lower side of the mechanical seal assembly and are provided with four groups in total, oil rings 12 are arranged in the oil seal assembly 5 in a matching way and are used for sealing the oil against the oil tangent plane 4, the oil seal assemblies 5 are fixedly arranged at the upper side and the lower side of the mechanical seal assembly and are fixedly arranged at the upper side and the lower side of the mechanical seal assembly in an interference way, the oil seal assembly 5 and the mechanical seal assembly and the device body 1 are connected in a matching way and can be disassembled, the two sides of the sealing shock absorption assembly 6 are arranged in a step shape, the upper side of the oil seal assembly 5 is provided with a step 13 in a matching mode, and the step 13 is used for limiting the sealing shock absorption assembly 6.
When the device works, when the device is installed, the circular hole plunger 3 penetrates through the through hole 2 in the device body 1, the sealing shock absorption assembly 6 above the circular hole plunger 3 is connected with the inlet above the device body 1, the mechanical sealing assemblies are correspondingly arranged on the left side and the right side of the outer side of the through hole 2, and the oil sealing assemblies 5 are arranged on the upper side and the lower side of the mechanical sealing assemblies and are fixed, so that the installation is completed; when the device works, fuel enters the through hole 2 through the inlet of the device body 1 while the round hole plunger 3 moves up and down, the round hole plunger 3 moves downwards at the moment, the sealing damping assembly 6 is connected with the inlet of the device body 1, the pressurizing piece 7 pushes the fuel downwards to be sprayed out from the outlet, the pressurizing piece 7 is connected with the oil-proof tangent plane 4 inside the through hole 2, so the fuel moves downwards under the influence of air pressure, the fuel can be smoothly pushed into the outlet, and the sealing damping assembly 6 is larger than the inlet so far, so that the external fuel is prevented from entering the through hole 2, at the moment, the inlet is in a closed state, so the fuel is sprayed out through the outlet, the situation that the fuel flows backwards or is not supplied in time is avoided, and the situation that the oil leakage can occur inside the device body 1 is avoided due to the existence of the mechanical sealing assembly and the oil sealing assembly 5, this completes the job.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope.
Claims (8)
1. The utility model provides a novel round hole fuel cut-off plunger device, includes device body (1), the upper end and the lower extreme cooperation of device body (1) are provided with import and export, its characterized in that: the oil seal device is characterized in that the outer side of the device body (1) is arranged in a stepped manner, a through hole (2) is preset in the center of the device body (1), a round hole plunger (3) penetrates through the through hole (2), an oil-proof tangent plane (4) is arranged on the inner wall of the through hole (2), and the device body (1) is matched with the through hole (2) and is provided with a mechanical seal assembly and an oil seal assembly (5).
2. The novel round hole oil-break plunger device as claimed in claim 1, wherein: the round hole plunger (3) is integrally cylindrical, the upper end of the round hole plunger (3) is in a circular ring shape, a sealing damping assembly (6) is arranged at the joint of the inlet of the device body (1), and the diameter of the sealing damping assembly (6) is larger than that of the inlet of the device body (1).
3. The novel round hole oil-break plunger device as claimed in claim 2, wherein: the sealing damping assembly is characterized in that a pressurizing piece (7) is arranged below the sealing damping assembly (6) in a matched mode, the diameter of the pressurizing piece (7) is equal to the diameter of an inlet of the device body (1), the outer side face of the pressurizing piece (7) is connected with an oil-proof tangent plane (4) of the through hole (2), and a connecting column (8) is arranged below the pressurizing piece (7) in a matched mode.
4. The novel round hole oil-break plunger device as claimed in claim 3, wherein: even post (8) are cylindrical setting and the diameter is far less than the diameter of through-hole (2) inner wall, the below of even post (8) is provided with column cap (9), the outstanding of column cap (9) and the export of through-hole (2) and diameter are greater than even post (8) and are less than the diameter of through-hole (2).
5. The novel round hole oil-break plunger device as claimed in claim 1, wherein: the mechanical seal assembly comprises a left mechanical seal (10) and a right mechanical seal (11), and the mechanical seal assembly is arranged on two sides of the outer wall of the through hole (2) in a matched mode.
6. The novel round hole oil-break plunger device as claimed in claim 1, wherein: the oil seal assembly (5) is arranged on the upper side and the lower side of the mechanical seal assembly and is provided with four groups, an oil ring (12) is arranged inside the oil seal assembly (5) in a matched mode, and the oil ring (12) is used for sealing oil for the oil-proof tangent plane (4).
7. The novel round hole oil-break plunger device as claimed in claim 1, wherein: the oil seal assembly (5) is fixedly arranged on the upper side and the lower side of the mechanical seal assembly and is fixed, and the oil seal assembly (5), the mechanical seal assembly and the device body (1) are connected in an interference fit mode and can be detached.
8. The novel round hole oil-break plunger device as claimed in claim 2, wherein: the two sides of the sealing shock absorption assembly (6) are arranged in a step shape, the upper side of the oil seal assembly (5) is provided with a step (13) in a matching mode, and the step (13) is used for limiting the sealing shock absorption assembly (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123010339.4U CN216241025U (en) | 2021-12-02 | 2021-12-02 | Novel round hole fuel cut-off plunger device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123010339.4U CN216241025U (en) | 2021-12-02 | 2021-12-02 | Novel round hole fuel cut-off plunger device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216241025U true CN216241025U (en) | 2022-04-08 |
Family
ID=80960671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123010339.4U Active CN216241025U (en) | 2021-12-02 | 2021-12-02 | Novel round hole fuel cut-off plunger device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216241025U (en) |
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2021
- 2021-12-02 CN CN202123010339.4U patent/CN216241025U/en active Active
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