CN204877917U - Hollow plunger is used to plunger pump - Google Patents
Hollow plunger is used to plunger pump Download PDFInfo
- Publication number
- CN204877917U CN204877917U CN201520434361.7U CN201520434361U CN204877917U CN 204877917 U CN204877917 U CN 204877917U CN 201520434361 U CN201520434361 U CN 201520434361U CN 204877917 U CN204877917 U CN 204877917U
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- plunger
- hole
- blind hole
- piston body
- main part
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Abstract
The utility model discloses a hollow plunger is used to plunger pump. It includes the plunger main part, the plunger main part is followed its the central axis and is seted up a perforating hole that runs through tail end and bulb end, reaches two at least hole axis blind hole parallel with the the central axis of plunger main part is seted up to contained angles such as all sides of perforating hole, and the drill way of each blind hole is equipped with the shutoff piece. The utility model discloses not only alleviate the whole weight of plunger, still improved the intensity and the rigidity of plunger, and the perforating hole inner wall is difficult for receiving the compression swelling, makes the clearance between the plunger pair optional forer a short time, has improved pump volume efficiency greatly, in addition, because the inside high -pressure medium that does not get into of plunger is less to low -pressure area operation in -process hydraulic pressure switching noise from high nip when the plunger.
Description
Technical field
The utility model relates to a kind of plunger pump hollow plunger of modified node method.
Background technique
In existing plunger pump, in order to reduce the movement inertia of plunger to raise the efficiency and to reduce mechanical noise, can offer along the central axis of piston body the through hole that runs through tail end and bulb end, and column body segment aperture is larger with weight reduction, as shown in Figure 1.But when the plunger of this structure operates in zone of high pressure, high-pressure medium can act on plunger inwall and cause plunger to expand, and causes frictional force to strengthen, so in order to ensure that the expansion of plunger is in controlled range, in column body segment, sky can not be excessive, causes the weight loss effect of plunger not obvious.And, in order to eliminate the impact of swell increment, the gap between plunger motion pair need be strengthened, thus greatly reduce the volumetric efficiency of whole pump.In addition, the high-pressure medium in column body segment can not be discharged, and when plunger is in the running of low pressure area, high-pressure medium fault offset causes hydraulic noise comparatively large, and noise reduction is not obvious.
Model utility content
The purpose of this utility model is the plunger hollow plunger providing a kind of modified node method, to solve the deficiencies in the prior art part.
For achieving the above object, the utility model adopts following technological scheme:
Plunger pump hollow plunger, comprise piston body, described piston body offers along its central axis the through hole that runs through tail end and bulb end, and offer the blind hole of the centerline axis parallel of at least two axially bored lines and piston body at angles such as all sides of described through hole, and the aperture of each blind hole is provided with closeouts.
Further, the tail end of described piston body welds a stifle, the aperture of all blind holes of this stifle shutoff.
As preferably, the quantity of described blind hole is five.
The utility model, by adopting said structure, not only alleviates plunger overall weight, also improves the strength and stiffness of plunger; And, through hole inwall not easily by compression swelling, make the gap between plunger motion pair optional less, substantially increase pump volumetric efficiency; Further, because plunger body does not enter high-pressure medium, when plunger is less to hydraulic pressure switching noise the running of low pressure area from zone of high pressure.
Accompanying drawing explanation
Fig. 1 is the axial sectional structure schematic diagram of existing a kind of plunger.
Fig. 2 is axial sectional structure schematic diagram of the present utility model.
Fig. 3 is cross-sectional structure schematic diagram of the present utility model.
In figure:
1-piston body; 11-bulb end; 12-tail end; 2-through hole; 3-blind hole; 4-stifle.
Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail.
Embodiment
As shown in Figures 2 and 3, plunger pump hollow plunger described in the utility model, there is a piston body 1, central axis along piston body 1 offers the through hole 2 that runs through tail end 12 and bulb end 11, and offer the blind hole 3 of the centerline axis parallel of five axially bored lines and piston body at angles such as all sides of through hole 2, and the aperture of each blind hole 3 is provided with closeouts.
In the present embodiment, closeouts is the stifle 4 being welded on piston body 1 tail end, the aperture of all blind holes 3 of this stifle 4 shutoff.
Plunger described in the present embodiment is compared with the plunger of structure shown in Fig. 1, because through hole is cylindrical hole and aperture can be done less, can ensure that hydraulic medium water conservancy diversion is to bulb end, hydraulic medium can be avoided again in piston body inner accumulated, and blind hole the overall body weight that can reduce piston body is set, stifle can stop that hydraulic medium enters in blind hole.Therefore, the utility model can alleviate overall weight, can improve again the strength and stiffness of self; And enter in blind hole because blocking hydraulic medium, hole inwall is not stressed and expands, the gap between plunger motion pair is littlely optional, can significantly improve pump volumetric efficiency; In addition, because piston body inside does not enter high-pressure medium, plunger is less to hydraulic pressure switching noise the running of low pressure area from zone of high pressure.
Claims (3)
1. plunger pump hollow plunger, comprise piston body, it is characterized in that, described piston body offers along its central axis the through hole that runs through tail end and bulb end, and offer the blind hole of the centerline axis parallel of at least two axially bored lines and piston body at angles such as all sides of described through hole, and the aperture of each blind hole is provided with closeouts.
2. plunger pump hollow plunger according to claim 1, is characterized in that, the tail end of described piston body welds a stifle, the aperture of all blind holes of this stifle shutoff.
3. plunger pump hollow plunger according to claim 1, is characterized in that, the quantity of described blind hole is five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434361.7U CN204877917U (en) | 2015-06-19 | 2015-06-19 | Hollow plunger is used to plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434361.7U CN204877917U (en) | 2015-06-19 | 2015-06-19 | Hollow plunger is used to plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204877917U true CN204877917U (en) | 2015-12-16 |
Family
ID=54822298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520434361.7U Active CN204877917U (en) | 2015-06-19 | 2015-06-19 | Hollow plunger is used to plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204877917U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339230A (en) * | 2017-07-05 | 2017-11-10 | 哈尔滨理工大学 | A kind of positive displacement plunger with wave surface |
| US20210070003A1 (en) * | 2017-08-03 | 2021-03-11 | Nienstedt Gmbh | Machine tool |
| CN115076092A (en) * | 2022-06-21 | 2022-09-20 | 烟台杰瑞石油装备技术有限公司 | Plunger and fracturing pump |
-
2015
- 2015-06-19 CN CN201520434361.7U patent/CN204877917U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339230A (en) * | 2017-07-05 | 2017-11-10 | 哈尔滨理工大学 | A kind of positive displacement plunger with wave surface |
| US20210070003A1 (en) * | 2017-08-03 | 2021-03-11 | Nienstedt Gmbh | Machine tool |
| US11919209B2 (en) * | 2017-08-03 | 2024-03-05 | Nienstedt Gmbh | Machine tool |
| CN115076092A (en) * | 2022-06-21 | 2022-09-20 | 烟台杰瑞石油装备技术有限公司 | Plunger and fracturing pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |