CN215927750U - Flow controllable plunger - Google Patents
Flow controllable plunger Download PDFInfo
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- CN215927750U CN215927750U CN202122438816.0U CN202122438816U CN215927750U CN 215927750 U CN215927750 U CN 215927750U CN 202122438816 U CN202122438816 U CN 202122438816U CN 215927750 U CN215927750 U CN 215927750U
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- plunger
- plunger body
- cylindrical cavity
- hole
- spring
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Abstract
The utility model discloses a flow-controllable plunger which comprises an outer plunger body and an inner plunger body, wherein a cylindrical cavity is formed in the middle of the outer plunger body, the cylindrical cavity penetrates through one end of the outer plunger body, a through hole is formed in one end, far away from the cylindrical cavity, of the outer plunger body, the through hole is communicated with the cylindrical cavity, threads are arranged on the inner wall of the through hole, the inner plunger body penetrates through the outer plunger body through the through hole, threads are arranged on the outer wall of the inner plunger body, the inner plunger body is in threaded connection with the outer plunger body, and a spring is sleeved on the outer ring of the inner plunger body. Through the position of the interior plunger body of adjusting wearing to locate on the outer plunger body for the flow of plunger pump can be controlled, and the precision is high. The spring is arranged between the inner plunger piston body and the outer plunger piston body, the elastic force of the spring acts between the inner plunger piston body and the outer plunger piston body, the pre-tightening effect is achieved, the connection between the inner plunger piston body and the outer plunger piston body is more reliable, and the stability of the whole structure is strong.
Description
Technical Field
The utility model relates to the technical field of plungers, in particular to a flow-controllable plunger.
Background
At present, in a hydraulic device, a plunger pump generally includes a cylinder body and a plunger, one end of the plunger extends into the cylinder body, the other end of the plunger is connected with a driving structure, the oil quantity of an oil inlet of an oil delivery valve of a hydraulic oil pump is adjusted, and the size of the oil inlet determines the quantity of oil supplied. As a power transmission device, the power transmission device can provide high-power to control the operation of lifting equipment; the existing plunger is various in types, however, the traditional plunger is simple in structure and single in function, and when the flow of the plunger pump needs to be controlled, the traditional plunger cannot meet the requirements, the application range is small, and the use limitation is large.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: overcomes the defects in the prior art and provides a flow-controllable plunger.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a controllable formula plunger of flow, includes the outer plunger body and the inner plunger body, cylindrical cavity has been seted up at the outer plunger body middle part, cylindrical cavity runs through the one end of the outer plunger body, the one end that the cylindrical cavity was kept away from to the outer plunger body has seted up the through-hole, the through-hole link up with cylindrical cavity, the inner wall of through-hole is provided with the screw thread, the inner plunger body passes through the through-hole is worn to establish on the outer plunger body, the outer wall of the inner plunger body is provided with the screw thread, the inner plunger body with outer plunger body threaded connection.
Furthermore, an annular gap is formed between the inner plunger body and the inner wall of the cylindrical cavity, a boss is arranged at the lower end of the inner plunger body and attached to the inner wall of the cylindrical cavity, a spring is sleeved on the outer ring of the inner plunger body, one end of the spring is abutted against the boss, and the other end of the spring is abutted against the upper end face of the cylindrical cavity.
Further, the annular groove has been seted up to the bottom outward flange of boss, the bottom of cylindrical cavity be provided with annular complex bulge loop, the annular groove with the bulge loop can be closed to each other.
Further, the top end of the inner plunger body is provided with a connector.
The utility model has the beneficial effects that: the plunger pump has the advantages of simple structure, reasonable design and simple and convenient operation, and the flow of the plunger pump can be controlled by adjusting the position of the inner plunger body penetrating through the outer plunger body, and the accuracy is high. The spring is arranged between the inner plunger piston body and the outer plunger piston body, the elastic force of the spring acts between the inner plunger piston body and the outer plunger piston body, the pre-tightening effect is achieved, the connection between the inner plunger piston body and the outer plunger piston body is more reliable, and the stability of the whole structure is strong.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
In the figure: 1. the plunger comprises an outer plunger body, 2 inner plunger bodies, 3 cylindrical cavities, 4 through holes, 5 bosses, 6 annular grooves, 7 convex rings, 8 connectors and 9 springs.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1 and 2, the flow-controllable plunger comprises an outer plunger body 1 and an inner plunger body 2, a cylindrical cavity 3 is formed in the middle of the outer plunger body 1, the cylindrical cavity 3 penetrates through one end of the outer plunger body 1, a through hole 4 is formed in one end, far away from the cylindrical cavity 3, of the outer plunger body 1, the through hole 4 is communicated with the cylindrical cavity 3, threads are formed in the inner wall of the through hole 4, the inner plunger body 2 passes through the through hole 4 and is arranged on the outer plunger body 1 in a penetrating mode, threads are formed in the outer wall of the inner plunger body 2 and are matched with the threads on the inner wall of the through hole 4, the inner plunger body 2 is in threaded connection with the outer plunger body 1, and the inner plunger rod 2 can rotate up or down along the through hole 4.
An annular gap is formed between the inner plunger body 2 and the inner wall of the cylindrical cavity 3, a boss 5 is arranged at the lower end of the inner plunger body 2, the boss 5 is attached to the inner wall of the cylindrical cavity 3, a spring 9 is sleeved on the outer ring of the inner plunger body 2, meanwhile, the spring is also arranged in an annular gap formed between the inner plunger body 2 and the inner wall of the cylindrical cavity 3, one end of the spring 9 is abutted against the boss 5, the other end of the spring is abutted against the upper end surface of the cylindrical cavity 3, the abutting force of the spring plays a good pre-tightening role, so that the connection between the inner plunger body and the outer plunger body is firmer and more stable, when the inner plunger rod is adjusted to rise, the situation that the upper surface of the boss is abutted against the upper end surface of the cylindrical cavity and the thread is screwed dead is avoided, this condition can damage the precision and life of the cavity, the lugs and the thread fit, thereby affecting the service life of the entire plunger.
Annular 6 has been seted up to the bottom outward flange of boss 5, the bottom of cylindrical cavity 3 be provided with annular 6 complex bulge loop 7, when interior plunger body down-regulates, annular 6 with bulge loop 7 can be supported each other and close, prevents that the interior plunger body from screwing out the outer plunger body. The top of the inner plunger body 2 is provided with a connector 8 for being connected with a driving structure.
When the inner plunger body 2 is adjusted upwards, the whole length of the plunger is lengthened, and because the position of the driving device and the plunger pump is fixed, the stroke of the plunger moving in the plunger pump is reduced, so that the flow of the plunger pump is controlled to be reduced; when the inner plunger body 2 is adjusted downwards, the whole length of the plunger is shortened, the position of the driving device and the plunger pump is fixed, the stroke of the plunger moving in the plunger pump is increased, and the flow rate of the control plunger pump is increased.
While particular embodiments of the present invention have been described in the foregoing specification, the present invention is not limited to the specific embodiments, and modifications and variations of the foregoing detailed description can be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (4)
1. A flow controllable plunger, its characterized in that: including the outer plunger body (1) and the inner plunger body (2), cylindrical cavity (3) have been seted up at the outer plunger body (1) middle part, cylindrical cavity (3) run through the one end of the outer plunger body (1), through-hole (4) have been seted up to the one end that cylindrical cavity (3) were kept away from to the outer plunger body (1), through-hole (4) link up with cylindrical cavity (3), the inner wall of through-hole (4) is provided with the screw thread, the inner plunger body (2) pass through-hole (4), wear to establish on the outer plunger body (1), the outer wall of the inner plunger body (2) is provided with the screw thread, the inner plunger body (2) with the outer plunger body (1) threaded connection.
2. A flow-controllable plunger as claimed in claim 1, wherein: the inner plunger body (2) and an annular gap is formed between the inner walls of the cylindrical cavity (3), a boss (5) is arranged at the lower end of the inner plunger body (2), the boss (5) is attached to the inner wall of the cylindrical cavity (3), a spring (9) is sleeved on the outer ring of the inner plunger body (2), one end of the spring (9) is abutted to the boss (5), and the other end of the spring is abutted to the upper end face of the cylindrical cavity (3).
3. A flow-controllable plunger as claimed in claim 2, wherein: annular groove (6) have been seted up to the bottom outward flange of boss (5), the bottom of cylindrical cavity (3) be provided with annular groove (6) complex bulge loop (7), annular groove (6) with bulge loop (7) can be closed each other to the butt.
4. A flow-controllable plunger as claimed in claim 1, wherein: the top end of the inner plunger body (2) is provided with a connector (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122438816.0U CN215927750U (en) | 2021-10-09 | 2021-10-09 | Flow controllable plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122438816.0U CN215927750U (en) | 2021-10-09 | 2021-10-09 | Flow controllable plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215927750U true CN215927750U (en) | 2022-03-01 |
Family
ID=80408215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122438816.0U Active CN215927750U (en) | 2021-10-09 | 2021-10-09 | Flow controllable plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215927750U (en) |
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2021
- 2021-10-09 CN CN202122438816.0U patent/CN215927750U/en active Active
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