CN202954960U - Liquid-sealed plunger pump - Google Patents
Liquid-sealed plunger pump Download PDFInfo
- Publication number
- CN202954960U CN202954960U CN 201220678621 CN201220678621U CN202954960U CN 202954960 U CN202954960 U CN 202954960U CN 201220678621 CN201220678621 CN 201220678621 CN 201220678621 U CN201220678621 U CN 201220678621U CN 202954960 U CN202954960 U CN 202954960U
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- CN
- China
- Prior art keywords
- pump
- plunger
- pump block
- liquid
- pump sleeve
- 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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Abstract
The utility model relates to the field of liquid pumps which are characterized by driving devices of working pieces and specifically relates to a liquid-sealed plunger pump. The liquid-sealed plunger pump comprises a pump sleeve (1) and a plunger (2), wherein the inner end of the plunger (2) is sheathed into the pump sleeve (1) from an opening of the pump sleeve (1) and can move along the inner wall of the pump sleeve (1), the part between the pump sleeve (1) and the plunger (2) is sealed, and the liquid-sealed plunger pump is characterized by further comprising a connecting rod (3), the connecting rod (3) penetrates through the bottom of the pump sleeve (1), an annular groove (11) is formed on the inner wall at the opening of the pump sleeve (1), and the diameter of the annular groove (11) is 150%-170% of the inner diameter of the pump sleeve (1) at the annular groove (11) and 70%-90% of the outer diameter of the pump sleeve (1) at the annular groove (11); and the height of the annular groove (11) is 3%-10% of that of the pump sleeve (1). The liquid-sealed plunger pump disclosed by the utility model has the advantages of convenience in processing, tight sealing, low cost and long service life.
Description
Technical field
The utility model relates to the pump field that the drive unit of workpiece is feature of take that device is fluid, is specially a kind of hydraulic seal plunger pump.
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.The advantages such as plunger pump has that rated pressure is high, compact structure, efficiency is high and Flow-rate adjustment is convenient, be widely used in the occasion that high pressure, large flow and flow need to be regulated, in hydraulic press, engineering machinery and boats and ships.During plunger pump work, need the sealing that keeps strict between plunger and pump block, suction and discharge in order to fluid, at present rely on the tight laminating between plungers and pump block to realize more, the surface finishment of plunger and pump block is had to very high requirement, difficulty of processing is large, cost of production is high, easy to wear, the life-span is short, and sealing effect is also undesirable.
The model utility content
In order to overcome the defect of prior art, a kind of easy to process, sealing is tight, cost is low, the life-span is long fluid machinery is provided, the utility model discloses a kind of hydraulic seal plunger pump.
The utility model reaches goal of the invention by following technical solution:
A kind of hydraulic seal plunger pump, comprise pump block and plunger, the inner of plunger is inserted in pump block and moves along the pump block inwall from the opening of pump block, between pump block and plunger, seal, it is characterized in that: also comprise connecting rod, connecting rod is through pump block bottom, on the inwall of pump block opening, has ring shaped slot, the diameter of ring shaped slot be pump block ring shaped slot place internal diameter 150%～170% and be that pump block is at 70%～90% of ring shaped slot place external diameter; The height of ring shaped slot is 3%～10% of pump block height.
Described hydraulic seal plunger pump is characterized in that: the external diameter of pump block at the ring shaped slot place is 2 times of this place's internal diameter.
When the utility model is used, in the ring shaped slot of pump block, inject lubricant oil, subsequently plunger is inserted in to pump block from the opening of pump block, lubricant oil seal between plunger outer wall and pump block inwall, greatly strengthened the sealing between pump block and plunger.Adopt the utility model, applicable pressure is increased to 3400kPa from original 1000kPa, and sealability has improved more than 3 times.
The beneficial effects of the utility model are: easy to process, sealing is tight, and cost is low, and the life-span is long.
The accompanying drawing explanation
Fig. 1 is generalized section of the present utility model.
Embodiment
Below further illustrate the utility model by specific embodiment.
Embodiment 1
A kind of hydraulic seal plunger pump, 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 moves along pump block 1 inwall from the opening of pump block 1, sealing between pump block 1 and plunger 2, have ring shaped slot 11 on the inwall of pump block 1 opening, the diameter of ring shaped slot 11 are pump blocks 1 ring shaped slot 11 place's internal diameters 150%～170% and be that pump block 1 is at 70%～90% of ring shaped slot 11 place's external diameters; The height of ring shaped slot 11 is 3%～10% of pump block 1 height, and connecting rod 3 is through pump block 1 bottom,
In the present embodiment, the height of pump block 1 is 29.25mm, at ring shaped slot 11 places, the external diameter of pump block 1 be respectively 18mm and 9mm with internal diameter, the diameter of ring shaped slot 11 and highly be respectively 14.53mm and 2.75mm.
When the present embodiment is used, at the interior injection lubricant oil of the ring shaped slot 11 of pump block 1, subsequently plunger 2 is inserted in to pump block 1 from the opening of pump block 1, lubricant oil seal between plunger 2 outer walls and pump block 1 inwall, greatly strengthened the sealing between pump block 1 and plunger 2.
Claims (2)
1. a hydraulic seal plunger pump, comprise pump block (1) and plunger (2), the inner of plunger (2) is inserted in pump block (1) and moves along pump block (1) inwall from the opening of pump block (1), sealing between pump block (1) and plunger (2), it is characterized in that: also comprise connecting rod (3), connecting rod (3) is through pump block (1) bottom, have ring shaped slot (11) on the inwall of pump block (1) opening, the diameter of ring shaped slot (11) be pump block (1) ring shaped slot (11) locate internal diameter 150%～170% and be that pump block (1) is located 70%～90% of external diameter at ring shaped slot (11), the height of ring shaped slot (11) is 3%～10% of pump block (1) height.
2. hydraulic seal plunger pump as claimed in claim 1, it is characterized in that: the external diameter that pump block (1) is located at ring shaped slot (11) is 2 times of this place's internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220678621 CN202954960U (en) | 2012-12-11 | 2012-12-11 | Liquid-sealed plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220678621 CN202954960U (en) | 2012-12-11 | 2012-12-11 | Liquid-sealed plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954960U true CN202954960U (en) | 2013-05-29 |
Family
ID=48460536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220678621 Expired - Fee Related CN202954960U (en) | 2012-12-11 | 2012-12-11 | Liquid-sealed plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761990A (en) * | 2019-12-02 | 2020-02-07 | 南京纳摩尔仪器有限公司 | Sealing mode of precise column injection pump |
-
2012
- 2012-12-11 CN CN 201220678621 patent/CN202954960U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761990A (en) * | 2019-12-02 | 2020-02-07 | 南京纳摩尔仪器有限公司 | Sealing mode of precise column injection pump |
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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: 20130529 Termination date: 20131211 |