CN216812130U - Plunger pump - Google Patents
Plunger pump Download PDFInfo
- Publication number
- CN216812130U CN216812130U CN202220291079.8U CN202220291079U CN216812130U CN 216812130 U CN216812130 U CN 216812130U CN 202220291079 U CN202220291079 U CN 202220291079U CN 216812130 U CN216812130 U CN 216812130U
- Authority
- CN
- China
- Prior art keywords
- pump
- plunger
- plunger rod
- oil outlet
- cavity
- 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.)
- Active
Links
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The utility model relates to a plunger pump, which comprises a pump sleeve, a plunger rod, a star-shaped sealing ring and a sealing gasket; the pump sleeve is internally provided with a pump cavity, the pump cavity is columnar, one end of the pump cavity is opened, the plunger rod is a polished rod, the polished rod is inserted into the pump sleeve and extends into the pump cavity from the opening, the outer peripheral surface of the polished rod is in clearance fit with the inner peripheral surface of the pump cavity, the plunger rod extends and contracts in the pump cavity, the star-shaped sealing ring and the sealing gasket are both arranged on the pump sleeve and sleeved on the plunger rod, and the pump sleeve and the plunger rod are connected in a sliding and sealing manner; the pump sleeve is provided with an oil inlet and an oil outlet, the oil inlet is located on the side wall of the pump cavity, and the oil outlet is located at the other end of the pump cavity and opposite to the plunger rod. The plunger pump has the advantages that the design is reasonable, the structure is simple, and the structure of the plunger pump is simplified, so that when the plunger pump is installed, the plunger return spring and the plunger rod are sequentially inserted into the pump sleeve, the assembly of the plunger pump can be easily realized, and the assembly is convenient; and the cost is lower.
Description
Technical Field
The utility model relates to the field of automobile hydraulic braking, in particular to a plunger pump.
Background
The original plunger pump has more structural parts, higher cost and more complex assembly.
Disclosure of Invention
In order to solve the problems, the utility model provides a plunger pump.
The technical scheme of the utility model is as follows:
a plunger pump comprises a pump sleeve, a plunger rod, a star-shaped sealing ring and a sealing gasket; the pump sleeve is internally provided with a pump cavity, the pump cavity is columnar, one end of the pump cavity is opened, the plunger rod is a polished rod, the polished rod is inserted into the pump sleeve and extends into the pump cavity from the opening, the outer peripheral surface of the polished rod is in clearance fit with the inner peripheral surface of the pump cavity, the plunger rod extends and contracts in the pump cavity, the star-shaped sealing ring and the sealing gasket are both arranged on the pump sleeve and sleeved on the plunger rod, and the pump sleeve and the plunger rod are connected in a sliding and sealing manner; the pump sleeve is provided with an oil inlet and an oil outlet, the oil inlet is located on the side wall of the pump cavity, and the oil outlet is located at the other end of the pump cavity and opposite to the plunger rod.
The plunger pump also comprises a driving mechanism, and the driving mechanism is connected with the plunger rod and drives the plunger rod to stretch and retract;
the driving mechanism comprises a cam structure and a plunger return spring, the cam structure is arranged outside the pump sleeve and abuts against the tail end of the plunger rod, and the plunger return spring is arranged in the pump cavity and abuts against the front end of the plunger rod; the two are matched to drive the plunger rod to extend and retract.
And the oil inlet and the oil outlet are respectively provided with a one-way valve.
The plunger pump further comprises a pump cover, the pump cover is sleeved on the pump sleeve and is opposite to the oil outlet, a valve cavity is formed between the pump cover and the pump sleeve, a spring and a steel ball are installed in the valve cavity, the steel ball is arranged at the oil outlet and is tightly pressed by the spring to seal the oil outlet, an outlet oil groove is formed in the periphery of the pump cover, and a check valve installed at the oil outlet is jointly formed.
One end of the oil outlet is large, the other end of the oil outlet is small, the oil outlet is in transition through a conical surface, the diameter of the large end of the oil outlet is larger than that of the steel ball, the diameter of the small end of the oil outlet is smaller than that of the steel ball, the steel ball is in contact with the conical surface, and the oil outlet is sealed.
The valve cavity is columnar and forms radial limit of the steel ball.
The front end of the plunger rod is raised to be tapered, and the tapered part of the plunger rod extends into the plunger return spring.
The plunger pump has the advantages that the design is reasonable, the structure is simple, and the structure of the plunger pump is simplified, so that when the plunger pump is installed, the plunger return spring and the plunger rod are sequentially inserted into the pump sleeve, the assembly of the plunger pump can be easily realized, and the assembly is convenient; and the cost is lower.
Drawings
Fig. 1 is a schematic diagram of a plunger pump structure.
In the figure, a pump sleeve 1, a plunger rod 2, a star-shaped sealing ring 3, a sealing gasket 4, a pump cavity 5, an oil inlet 6, an oil outlet 7, a plunger return spring 8, a pump cover 9, a valve cavity 10, a spring 11 and a steel ball 12.
Detailed Description
As shown in the figure, the plunger pump comprises a pump sleeve 1, a plunger rod 2, a star-shaped sealing ring 3 and a sealing gasket 4; the pump sleeve 1 is internally provided with a pump cavity 5, the pump cavity 5 is columnar, one end of the pump cavity is opened, the plunger rod 2 is a polished rod, the polished rod is inserted into the pump sleeve 1 and extends into the pump cavity 5 from the opening, the outer peripheral surface of the polished rod is in clearance fit with the inner peripheral surface of the pump cavity 5, the plunger rod 2 stretches and retracts in the pump cavity 5, the star-shaped sealing ring 3 and the sealing gasket 4 are both arranged on the pump sleeve 1 and sleeved on the plunger rod 2, and the pump sleeve 1 and the plunger rod 2 are connected in a sliding and sealing manner; the pump sleeve 1 is provided with an oil inlet 6 and an oil outlet 7, the oil inlet 6 is positioned on the side wall of the pump cavity 5, and the oil outlet 7 is positioned at the other end of the pump cavity 5 and is opposite to the plunger rod 2; the plunger pump also comprises a driving mechanism, the driving mechanism is connected with the plunger rod 2 and drives the plunger rod 2 to stretch and retract; the driving mechanism comprises a cam structure and a plunger return spring 8, the cam structure is arranged outside the pump sleeve 1 and abuts against the tail end of the plunger rod 2, and the plunger return spring 8 is arranged in the pump cavity 5 and abuts against the front end of the plunger rod 2; the two are matched to drive the plunger rod 2 to extend and retract; the oil inlet 6 and the oil outlet 7 are respectively provided with a one-way valve; the plunger pump also comprises a pump cover 9, the pump cover 9 is sleeved on the pump sleeve 1 and is opposite to the oil outlet 7, a valve cavity 10 is formed between the pump cover 9 and the pump sleeve 1, a spring 11 and a steel ball 12 are installed in the valve cavity 10, the steel ball 11 is arranged at the oil outlet 7 and is pressed by the spring 11 to seal the oil outlet 7, and an outlet oil groove is formed in the peripheral side of the pump cover 9 to jointly form a one-way valve installed at the oil outlet 7; one end of the oil outlet 7 is large, the other end of the oil outlet 7 is small, the oil outlet is in transition through a conical surface, the diameter of the large end of the oil outlet is larger than that of the steel ball 12, the diameter of the small end of the oil outlet is smaller than that of the steel ball 12, the steel ball 12 is in contact with the conical surface, and the oil outlet 7 is sealed; the valve cavity 10 is columnar and forms radial limit of the steel ball 12; the front end of the plunger rod 2 is raised and tapered, and the tapered part of the plunger rod extends into the plunger return spring 8.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. A plunger pump comprises a pump sleeve, a plunger rod, a star-shaped sealing ring and a sealing gasket; the plunger rod is telescopic in the pump cavity, the star-shaped sealing ring and the sealing gasket are both arranged on the pump sleeve and sleeved on the plunger rod, and the pump sleeve and the plunger rod are connected in a sliding and sealing manner; the pump sleeve is provided with an oil inlet and an oil outlet, the oil inlet is located on the side wall of the pump cavity, and the oil outlet is located at the other end of the pump cavity and opposite to the plunger rod.
2. The plunger pump of claim 1, further comprising a driving mechanism, wherein the driving mechanism is connected with the plunger rod and drives the plunger rod to extend and retract;
the driving mechanism comprises a cam structure and a plunger return spring, the cam structure is arranged outside the pump sleeve and abuts against the tail end of the plunger rod, and the plunger return spring is arranged in the pump cavity and abuts against the front end of the plunger rod; the two are matched to drive the plunger rod to extend and retract.
3. The plunger pump of claim 1, wherein a check valve is installed at each of the oil inlet and the oil outlet.
4. The plunger pump according to claim 3, further comprising a pump cover, wherein the pump cover is sleeved on the pump cover and opposite to the oil outlet, a valve cavity is formed between the pump cover and the pump cover, a spring and a steel ball are mounted in the valve cavity, the steel ball is arranged at the oil outlet and is compressed by the spring to seal the oil outlet, and an outlet oil groove is formed in the periphery of the pump cover to jointly form a check valve mounted at the oil outlet.
5. The plunger pump of claim 4, wherein the oil outlet has a large end and a small end, and the diameter of the large end is larger than that of the steel ball, the diameter of the small end is smaller than that of the steel ball, and the steel ball contacts with the conical surface to seal the oil outlet.
6. The plunger pump of claim 4, wherein the valve cavity is cylindrical and forms a radial stop for the steel ball.
7. The plunger pump of claim 2, wherein said plunger rod front end projection is tapered, with the tapered portion extending into the plunger return spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220291079.8U CN216812130U (en) | 2022-02-14 | 2022-02-14 | Plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220291079.8U CN216812130U (en) | 2022-02-14 | 2022-02-14 | Plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216812130U true CN216812130U (en) | 2022-06-24 |
Family
ID=82040887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220291079.8U Active CN216812130U (en) | 2022-02-14 | 2022-02-14 | Plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216812130U (en) |
-
2022
- 2022-02-14 CN CN202220291079.8U patent/CN216812130U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216812130U (en) | Plunger pump | |
| CN201015990Y (en) | Novel plunger type main leather cup for the brake master cylinder | |
| CN220483956U (en) | Liquid alcohol packaging barrel with high safety | |
| CN103410721B (en) | Fluid end device of plunger pump | |
| CN202251956U (en) | Floating gap seal with high speed, high frequency and high abrasion resistance | |
| CN200940616Y (en) | Plunger hydraulic oil cylinder of braker | |
| CN209067881U (en) | A kind of completely new low-pressure opening check valve | |
| CN209959617U (en) | Constant-speed equal-thrust two-stage hydraulic cylinder | |
| CN201170174Y (en) | Air stress application pump with new structure | |
| CN208534874U (en) | A kind of rapid-pressurizing hydraulic cylinder | |
| CN208203849U (en) | A kind of clutch power-assisted master cylinder | |
| CN219242508U (en) | Simplified pressurizing cylinder body structure with rotation prevention and pressurizing functions | |
| CN2536826Y (en) | Gasoline transition booster cylinder | |
| CN219237002U (en) | Boost cylinder structure with anti-rotation and boost functions | |
| CN213176574U (en) | High-wear-resistance cylinder sleeve type brake caliper | |
| CN206513547U (en) | High-efficiency and energy-saving type plunger pump | |
| CN213541126U (en) | Optimized clutch power assisting device | |
| CN202625730U (en) | Oil jack with pneumatic pump | |
| CN210454782U (en) | Elastic retainer ring end cover mounting structure of brake master cylinder | |
| CN205383072U (en) | Plunger pump packing device | |
| CN209972425U (en) | Novel central valve structure for brake master cylinder | |
| CN212003800U (en) | Adjustable check valve | |
| CN214929672U (en) | Lever boosting type brake cylinder | |
| CN220248533U (en) | Novel three-stage lifting oil cylinder for car | |
| CN117345730B (en) | Double self-locking hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |