CN216518581U - Plunger assembly - Google Patents
Plunger assembly Download PDFInfo
- Publication number
- CN216518581U CN216518581U CN202123072648.4U CN202123072648U CN216518581U CN 216518581 U CN216518581 U CN 216518581U CN 202123072648 U CN202123072648 U CN 202123072648U CN 216518581 U CN216518581 U CN 216518581U
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- plunger
- hole
- spring
- seat
- steel ball
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Abstract
The utility model relates to a grease pump, in particular to a plunger assembly, which comprises a steel ball, a sealing spring and an end joint, and also comprises: the plunger seat is provided with a plunger hole, an oil inlet hole and an oil outlet hole which are communicated with the plunger hole, the end part joint is fixed on the plunger hole, the steel ball and the sealing spring are movably inserted into the plunger hole and are positioned on one side of the end part joint, and the sealing spring and the steel ball are used for sealing the plunger hole when lubricating grease is sucked; the plunger rod is inserted into the plunger hole in a sliding mode and is positioned on one side of the steel ball; and the reset spring is movably inserted on the plunger rod, and two ends of the reset spring are respectively connected with the plunger seat and the plunger rod. According to the plunger assembly provided by the utility model, the plunger seat and the plunger rod are integrated, so that the plunger assembly is convenient to disassemble and assemble, convenient to replace and convenient to maintain and clean.
Description
Technical Field
The utility model relates to a lubricating grease pump, in particular to a plunger assembly.
Background
The grease pump is also called a grease pump, and is used to inject solid grease into a portion to be lubricated through an oil hole. The existing lubricating grease pump mostly adopts a plunger type component, but because the lubricating grease contains more impurities and is easy to block and leak oil, the plunger component needs to be maintained frequently, the whole grease pump needs to be detached during maintenance, the maintenance workload is large, the maintenance time is long, and the maintenance is inconvenient.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a plunger assembly which is convenient to maintain, clean and replace, and the specific technical scheme is as follows:
a plunger assembly comprising a steel ball, a sealing spring and an end fitting, further comprising: the plunger seat is provided with a plunger hole, an oil inlet hole and an oil outlet hole which are communicated with the plunger hole, the end part joint is fixed on the plunger hole, the steel ball and the sealing spring are movably inserted into the plunger hole and are positioned on one side of the end part joint, and the sealing spring and the steel ball are used for sealing the plunger hole when lubricating grease is sucked; the plunger rod is inserted into the plunger hole in a sliding mode and is positioned on one side of the steel ball; and the reset spring is movably inserted on the plunger rod, and two ends of the reset spring are respectively connected with the plunger seat and the plunger rod.
Preferably, the end of the plunger rod is provided with a ball groove.
Preferably, an annular oil outlet groove is formed in the plunger seat, and the oil outlet groove is communicated with the oil outlet hole.
Preferably, an annular oil inlet groove is formed in the plunger seat, and the oil inlet groove is communicated with the oil inlet hole.
Preferably, the end connector is provided with a spring hole, and the sealing spring is movably inserted in the spring hole.
Preferably, the plunger rod further comprises a spring seat fixed at one end of the plunger rod, and the return spring is located between the spring seat and the plunger seat.
Wherein, the excircle face of plunger seat is equipped with the external screw thread.
Further, the end connector comprises an oil outlet connector or a sealing plug.
Compared with the prior art, the utility model has the following beneficial effects:
according to the plunger assembly provided by the utility model, the plunger seat and the plunger rod are integrated, so that the plunger assembly is convenient to disassemble and assemble, convenient to replace and convenient to maintain and clean.
Drawings
FIG. 1 is a schematic structural view of a plunger assembly;
FIG. 2 is a cross-sectional view of a plunger assembly;
FIG. 3 is an exploded view of a plunger assembly;
fig. 4 is a cross-sectional view of a plunger assembly with a sealing plug.
Detailed Description
The utility model will now be further described with reference to the accompanying drawings.
As shown in fig. 1 to 4, a plunger assembly comprises a steel ball 3, a sealing spring 4, an end joint, a plunger seat 1, a plunger rod 2 and a return spring 7.
Be equipped with plunger hole 11, valve opening 12, inlet port 13 and oil outlet 14 on the plunger seat 1, wherein, plunger hole 11 and valve opening 12 coaxial line and communicate with each other, the diameter of valve opening 12 is greater than the diameter of plunger hole 11, inlet port 13 communicates with each other with plunger hole 11, valve opening 12 communicates with each other with oil outlet 14, end joint installs on valve opening 12, steel ball 3 movable mounting is in valve opening 12, sealing spring 4 installs in spring hole 52, and be located one side of steel ball 3, sealing spring 4 is used for compressing tightly steel ball 3 at the top of plunger hole 11, sealed post 11 when the plunger rod 2 inhales lubricating grease.
The outer disc of plunger seat 1 is equipped with external screw thread, oil feed tank 15 and oil outlet tank 16, and the external screw thread is used for being connected with the grease pump, conveniently changes the plunger subassembly. The oil inlet groove 15 and the oil outlet groove 16 are used for forming an annular cavity for oil inlet or oil outlet, so that lubricating grease can enter and be extruded conveniently.
The top of plunger seat 1 is equipped with first outer hexagonal 53, and first outer hexagonal 53 is used for the dismouting of plunger seat 1.
The bottom of the plunger seat 1 is provided with an annular spring groove 19, and the return spring 7 is movably inserted on the spring groove 19.
The end connector is fixed on the valve hole 12 through threads and comprises an oil outlet connector 50 or a sealing plug 55, wherein the oil outlet connector 50 is provided with a connector oil hole 51 and a spring hole 52, the connector oil hole 51 is communicated with the spring hole 52 and is coaxially arranged, the spring hole 52 is communicated with the valve hole 12, and the sealing spring 4 is movably inserted in the spring hole 52. The spring hole 52 may shorten the length of the plunger holder 1. The oil outlet joint 50 can discharge oil from the end. When the end fitting is a sealed plug 55, grease can only be extruded from the oil outlet 14. The sealing plug 55 is also provided with a spring hole. A sealing ring is arranged between the end joint and the plunger seat 1. The oil outlet connector 50 is provided with a second outer hexagon 53, and the second outer hexagon 53 facilitates the disassembly and assembly of the oil outlet connector 50.
The plunger rod 2 is slidably inserted in the plunger hole 11 to form a piston structure. The top of the plunger rod 2 is provided with a ball groove 21 matched with the steel ball 3.
The ball groove 21 enables the plunger rod 2 to be attached to the steel ball 3 when being in contact with the steel ball 3, and a gap between the plunger rod 2 and the steel ball 3 is avoided, so that the plunger rod 2 can push the steel ball 3 with less labor.
The bottom of the plunger rod 2 is provided with a spring seat 6 and a clamp spring, and the clamp spring limits the spring seat 6 on the plunger rod 2. One end of return spring 7 presses against the bottom of spring groove 19 and the other end presses against spring seat 6.
When the plunger rod 2 is in work, under the action of the return spring 7, the plunger rod 2 is far away from the valve hole 12 and the steel ball 3, the steel ball 3 is pressed on the top of the plunger hole 11 under the action of the sealing spring 4, the top of the plunger hole 11 is sealed, when the plunger rod 2 is far away from the steel ball 3, vacuum is formed inside the plunger hole 11, when the end part of the plunger rod 2 moves to the oil inlet hole 13, the oil inlet hole 13 is communicated with the plunger hole 11, and lubricating grease is sucked into the plunger hole 11; when the plunger rod 2 presses the valve hole 12 under the action of external force, the plunger rod 2 presses lubricating grease in the plunger hole 11 to the valve hole 12, the steel ball 3 is pushed open under the pushing of the lubricating grease, the valve hole 12 is communicated with the plunger hole 11, the lubricating grease enters the valve hole 12, and the lubricating grease is extruded out through the oil outlet 14 or the oil outlet joint 50; a continuous output of grease is formed when the plunger rod 2 is reciprocated.
Because plunger seat 1, plunger rod 2, steel ball 3, sealing spring 4 and reset spring 7 form overall structure, consequently when the grease pump breaks down, easy dismounting to can maintain through the mode of direct change, very big improvement maintain speed. And the detached plunger assembly is convenient to disassemble and assemble and clean, so that blockage is eliminated.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, which shall fall within the scope of the appended claims.
Claims (8)
1. A plunger assembly comprising a steel ball (3), a seal spring (4) and an end fitting, further comprising:
the lubricating device comprises a plunger seat (1), wherein a plunger hole (11), an oil inlet hole (13) and an oil outlet hole (14) which are communicated with the plunger hole (11) are formed in the plunger seat (1), an end joint is fixed on the plunger hole (11), a steel ball (3) and a sealing spring (4) are movably inserted into the plunger hole (11) and are positioned on one side of the end joint, and the sealing spring (4) and the steel ball (3) are used for sealing the plunger hole (11) when lubricating grease is sucked;
the plunger rod (2) is inserted into the plunger hole (11) in a sliding mode and is positioned on one side of the steel ball (3); and
the reset spring (7) is movably inserted on the plunger rod (2), and two ends of the reset spring (7) are respectively connected with the plunger seat (1) and the plunger rod (2).
2. A plunger assembly according to claim 1, characterised in that the end of the plunger rod (2) is provided with a ball groove (21).
3. Plunger assembly according to claim 1, characterised in that the plunger seat (1) is provided with an annular oil outlet groove (16), which oil outlet groove (16) communicates with the oil outlet opening (14).
4. Plunger assembly according to claim 1, characterised in that the plunger seat (1) is provided with an annular oil inlet groove (15), the oil inlet groove (15) communicating with the oil inlet hole (13).
5. Plunger assembly according to claim 1, characterised in that the end fitting is provided with a spring bore (52), the sealing spring (4) being movably inserted in the spring bore (52).
6. A plunger assembly according to claim 1, further comprising a spring seat (6), the spring seat (6) being fixed at one end of the plunger rod (2), the return spring (7) being located between the spring seat (6) and the plunger seat (1).
7. A plunger assembly according to claim 1, characterised in that the outer circumferential surface of the plunger seat (1) is provided with an external thread.
8. A plunger assembly as claimed in any one of claims 1 to 7, characterised in that the end fitting comprises an oil outlet fitting (50) or a sealing plug (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123072648.4U CN216518581U (en) | 2021-12-08 | 2021-12-08 | Plunger assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123072648.4U CN216518581U (en) | 2021-12-08 | 2021-12-08 | Plunger assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216518581U true CN216518581U (en) | 2022-05-13 |
Family
ID=81467816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123072648.4U Active CN216518581U (en) | 2021-12-08 | 2021-12-08 | Plunger assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216518581U (en) |
-
2021
- 2021-12-08 CN CN202123072648.4U patent/CN216518581U/en active Active
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