CN203161521U - Plunger pump with shovel-shaped plunger - Google Patents
Plunger pump with shovel-shaped plunger Download PDFInfo
- Publication number
- CN203161521U CN203161521U CN 201220678640 CN201220678640U CN203161521U CN 203161521 U CN203161521 U CN 203161521U CN 201220678640 CN201220678640 CN 201220678640 CN 201220678640 U CN201220678640 U CN 201220678640U CN 203161521 U CN203161521 U CN 203161521U
- Authority
- CN
- China
- Prior art keywords
- plunger
- pump
- connecting rod
- groove
- pump block
- 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.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
Abstract
The utility model relates to a fluid device which takes a driving device of a workpiece as the characteristic, belongs to the field of pumps, and particularly discloses a plunger pump with a shovel-shaped plunger. The plunger pump with a shovel-shaped pump rod comprises a pump sleeve (1) and the plunger (2), wherein the inner end of the plunger (2) is sleeved with the pump sleeve (1) from an opening of the pump sleeve (1), and moves along an inner wall of the pump sleeve (1), and the pump sleeve (1) and the plunger (2) are sealed. The plunger pump is characterized by further comprising a connecting rod (3), wherein the connecting rod (3) penetrates into the bottom of the pump sleeve (1); a groove (21) is formed at the inner end of the plunger (2), and matched with the connecting rod (3); and when the inner end of the plunger (2) moves to the bottom of the pump sleeve (1) along the inner wall of the pump sleeve (1), the connecting rod (3) is sleeved with the groove (21) exactly. The plunger pump is simple in structure and accurate in positioning.
Description
Technical field
It is that the drive unit with workpiece of fluid is the pump field of feature that the utility model relates to device, is specially a kind of plunger pump that has the spade plunger.
Background technique
Plunger pump is an important device of hydraulic system, and plunger pump relies on plunger to-and-fro motion in pump block, makes the volume of seal operation cavity volume change to realize imbibition, hydraulic fluid.Plunger pump has advantages such as rated pressure height, compact structure, efficient height and Flow-rate adjustment convenience, is widely used in the occasion that high pressure, big flow and flow need be regulated, in hydraulic press, engineering machinery and boats and ships.Plunger is when moving to the pump block bottom, and having the location to locate need be to prevent rotation, the friction realizations that rely between plunger and the pump block at present more, and Location accuracy is poor, and is also unreliable.
The model utility content
In order to overcome the defective of prior art, a kind of fluid machinery of simple in structure, accurate positioning is provided, the utility model discloses a kind of plunger pump that has the spade plunger.
The utility model reaches goal of the invention by following technical solution:
A kind of plunger pump that has the spade pump rod, comprise pump block and plunger, the inner of plunger is inserted in pump block and is moved along the pump block inwall from the opening of pump block, seal between pump block and the plunger, it is characterized in that: comprise that also connecting rod, connecting rod are through the pump block bottom, the inner of plunger has groove, groove and connecting rod match, and when plunger the inner moved to the pump block bottom along the pump block inwall, groove just was enclosed within on the connecting rod.
The described plunger pump that has the spade pump rod is characterized in that: connecting rod is cylindrical body, and the cross section of groove is semicircle, and the radius of curvature in connecting rod cross section is not more than the radius of curvature in groove cross section.
When the utility model used, when plunger the inner moved to the pump block bottom along the pump block inwall, groove just was enclosed within on the connecting rod, because the two ends of connecting rod are enclosed within on the pump block, so connecting rod itself fixes, like this cooperation by connecting rod and groove, plunger is positioned, and has also prevented the plunger rotation.
The beneficial effects of the utility model are: simple in structure, and accurate positioning.
Description of drawings
Fig. 1 is generalized section of the present utility model.
Embodiment
Below further specify the utility model by specific embodiment.
Embodiment 1
A kind of plunger pump that has the spade pump rod, comprise pump block 1, plunger 2 and connecting rod 3, as shown in Figure 1, concrete structure is: the inner of plunger 2 is inserted in pump block 1 and is moved along pump block 1 inwall from the opening of pump block 1, sealing between pump block 1 and the plunger 2, and connecting rod 3 is through pump block 1 bottom, the inner of plunger 2 has groove 21, groove 21 and connecting rod 3 match, and when plunger 2 the inners moved to pump block 1 bottom along pump block 1 inwall, groove 21 just was enclosed within on the connecting rod 3.
In the present embodiment, connecting rod 3 is cylindrical body, and the cross section of groove 21 is semicircle, and the radius of curvature in connecting rod 3 cross sections is not more than the radius of curvature in groove 21 cross sections.
When present embodiment uses, when plunger 2 the inners move to pump block 1 bottom along pump block 1 inwall, groove 21 just is enclosed within on the connecting rod 3, because the two ends of connecting rod 3 are enclosed within on the pump block 1, therefore connecting rod 3 is fixed itself, by the cooperation of connecting rod 3 and groove 21, plunger 2 is positioned like this, has also prevented plunger 2 rotations.
Claims (2)
1. plunger pump that has the spade plunger, comprise pump block (1) and plunger (2), the inner of plunger (2) is inserted in pump block (1) and is moved along pump block (1) inwall from the opening of pump block (1), sealing between pump block (1) and the plunger (2), it is characterized in that: also comprise connecting rod (3), connecting rod (3) is through pump block (1) bottom, the inner of plunger (2) has groove (21), groove (21) and connecting rod (3) match, when plunger (2) the inner moved to pump block (1) bottom along pump block (1) inwall, groove (21) just was enclosed within on the connecting rod (3).
2. the plunger pump that has the spade plunger as claimed in claim 1, it is characterized in that: connecting rod (3) is cylindrical body, and the cross section of groove (21) is semicircle, and the radius of curvature in connecting rod (3) cross section is not more than the radius of curvature in groove (21) cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220678640 CN203161521U (en) | 2012-12-11 | 2012-12-11 | Plunger pump with shovel-shaped plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220678640 CN203161521U (en) | 2012-12-11 | 2012-12-11 | Plunger pump with shovel-shaped plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161521U true CN203161521U (en) | 2013-08-28 |
Family
ID=49022710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220678640 Expired - Fee Related CN203161521U (en) | 2012-12-11 | 2012-12-11 | Plunger pump with shovel-shaped plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161521U (en) |
-
2012
- 2012-12-11 CN CN 201220678640 patent/CN203161521U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20131211 |