CN204692024U - Two-stage pressurizing device - Google Patents
Two-stage pressurizing device Download PDFInfo
- Publication number
- CN204692024U CN204692024U CN201520339467.9U CN201520339467U CN204692024U CN 204692024 U CN204692024 U CN 204692024U CN 201520339467 U CN201520339467 U CN 201520339467U CN 204692024 U CN204692024 U CN 204692024U
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- China
- Prior art keywords
- high pressure
- piston
- sealing seat
- pressure stem
- sealing
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- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000007769 metal material Substances 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Abstract
The utility model discloses a kind of two-stage pressurizing device, the second piston comprising outer tube, high pressure stem and be sealed between outer tube and high pressure stem, high-voltage tube is fixed with in described second piston lower end, it is characterized in that: be fixed with a sealing seat at described second piston threaded upper ends, sealing seat upper-end surface is provided with the detaching structure rotating in described outer tube and dismantled from described second piston by sealing seat, between described sealing seat and high pressure stem, be provided with the guide collar of non-metallic material, between described sealing seat and high pressure stem, be provided with the first Sealing.Compared with prior art, the utility model secures a sealing seat at second piston threaded upper ends, thus the sealing of second piston and high pressure stem has been transferred on sealing seat from second piston, like this when dismantling high pressure stem, only sealing seat need be dismantled, just achieve being separated of high pressure stem and second piston, easy to doly can realize the dismounting of high pressure stem, greatly improve efficiency.
Description
Technical field:
The utility model relates to a kind of pressurization device of high-pressure pump, specifically for the two-stage pressurizing device of this high-pressure pump.
Background technique:
The existing two-stage pressurizing device for high-pressure pump, as shown in Figure 2, generally comprises outer tube 11, second piston 12, high-voltage tube 13 and high pressure stem 14.Wherein second piston 12 is sealed in outer tube 11 by seal ring, and high-voltage tube 13 is fixed on the lower end of second piston 12 by screw thread, and the upper end of second piston 12 realizes axially locating by trim ring 15 and high pressure stem 14.High pressure stem, when mounting and dismounting, first must be dismantled outer tube and second piston, then high pressure stem could be taken down from from high-voltage tube, and the installation and removal of high pressure stem are complicated, time and effort consuming.
Summary of the invention:
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and provides a kind of and can be easy for installation and removal the two-stage pressurizing device of high pressure stem without the need to dismantling outer tube and second piston.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of two-stage pressurizing device, the second piston comprising outer tube, high pressure stem and be sealed between outer tube and high pressure stem, high-voltage tube is fixed with in described second piston lower end, it is characterized in that: be fixed with a sealing seat at described second piston threaded upper ends, sealing seat upper-end surface is provided with the detaching structure rotating in described outer tube and dismantled from described second piston by sealing seat, between described sealing seat and high pressure stem, be provided with the guide collar of non-metallic material, between described sealing seat and high pressure stem, be provided with the first Sealing.
Described guide collar is prolong axial arranged two of described high pressure stem, and described first Sealing is between two guide collar.
Described detaching structure is groove structure or the protruding structure with at least one axial locating surface.
Described groove structure is inner polygon groove; Described protruding structure is outer polygonal post.
Compared with prior art, the utility model secures a sealing seat at second piston threaded upper ends, thus the sealing of second piston and high pressure stem has been transferred on sealing seat from second piston, like this when dismantling high pressure stem, only sealing seat need be dismantled, just achieve being separated of high pressure stem and second piston, easy to doly can realize the dismounting of high pressure stem, greatly improve efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of prior art.
In Fig. 1: 1, outer tube, 2, second piston, 3, high-voltage tube, 4, high pressure stem, 5, sealing seat, 6, guide collar, the 7, first Sealing, the 8, second Sealing.
Embodiment
Below in conjunction with accompanying drawing, elaborate to the utility model: as shown in Figure 1, the utility model two-stage pressurizing device, comprises outer tube 1, second piston 2, high-voltage tube 3 and high pressure stem 4.Second piston 2 is sealed with outer tube 1 by the second Sealing 8, is connected with sealing seat 5, is provided with the first Sealing 7 in sealing seat 5 at second piston 2 threaded upper ends.The sealing of second piston 2 and high pressure stem 4 is achieved by the first Sealing 7.Meanwhile, in order to make high pressure stem 4 do not pulled on surface when moving, the guide collar 6 of nonmetallic material is also installed between sealing seat 5 and high pressure stem 4.Low and the plastics of lightweight of cost generally chosen by the material of guide collar 6.In order to improve the precision of axially locating, guide collar 6 can arrange two.The conveniently dismounting of sealing seat 5, sealing seat 5 upper-end surface is provided with the detaching structure rotating in outer tube and dismantled from second piston by sealing seat, in the present embodiment, detaching structure is spanner groove, certainly, detaching structure also can adopt conventional groove structure or protruding structure, as the polygonal post of interior hex slot or outer-hexagonal.
Claims (4)
1. a two-stage pressurizing device, the second piston comprising outer tube, high pressure stem and be sealed between outer tube and high pressure stem, high-voltage tube is fixed with in described second piston lower end, it is characterized in that: be fixed with a sealing seat at described second piston threaded upper ends, sealing seat upper-end surface is provided with the detaching structure rotating in described outer tube and dismantled from described second piston by sealing seat, between described sealing seat and high pressure stem, be provided with the guide collar of non-metallic material, between described sealing seat and high pressure stem, be provided with the first Sealing.
2. two-stage pressurizing device according to claim 1, is characterized in that: described guide collar is prolong axial arranged two of described high pressure stem, and described first Sealing is between two guide collar.
3. two-stage pressurizing device according to claim 1 and 2, is characterized in that: described detaching structure is groove structure or the protruding structure with at least one axial locating surface.
4. two-stage pressurizing device according to claim 3, is characterized in that: described groove structure is inner polygon groove; Described protruding structure is outer polygonal post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520339467.9U CN204692024U (en) | 2015-05-25 | 2015-05-25 | Two-stage pressurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520339467.9U CN204692024U (en) | 2015-05-25 | 2015-05-25 | Two-stage pressurizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204692024U true CN204692024U (en) | 2015-10-07 |
Family
ID=54232325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520339467.9U Active CN204692024U (en) | 2015-05-25 | 2015-05-25 | Two-stage pressurizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204692024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895760A (en) * | 2015-05-25 | 2015-09-09 | 南通广兴气动设备有限公司 | Second-stage pressure device |
-
2015
- 2015-05-25 CN CN201520339467.9U patent/CN204692024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895760A (en) * | 2015-05-25 | 2015-09-09 | 南通广兴气动设备有限公司 | Second-stage pressure device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |