CN205315251U - High pressure plunger pump's seal structure - Google Patents
High pressure plunger pump's seal structure Download PDFInfo
- Publication number
- CN205315251U CN205315251U CN201521099638.1U CN201521099638U CN205315251U CN 205315251 U CN205315251 U CN 205315251U CN 201521099638 U CN201521099638 U CN 201521099638U CN 205315251 U CN205315251 U CN 205315251U
- Authority
- CN
- China
- Prior art keywords
- plunger
- sealed structure
- high pressure
- sealed
- tail
- 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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- Sealing Devices (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model provides a high pressure plunger pump's seal structure, establish the plunger bushing outside the plunger including plunger and cover, the plunger includes plunger prelude and plunger afterbody, the diameter of plunger prelude is greater than the diameter of plunger afterbody the cover is equipped with lead copper sheathing and last seal structure between plunger prelude and the plunger bushing, on lead copper sheathing and last seal structure and plunger prelude sliding fit the cover is equipped with down lead copper sheathing and lower seal structure between plunger afterbody and the plunger bushing, under lead copper sheathing and down seal structure and plunger afterbody sliding fit. The beneficial effects of the utility model are that sealing performance is good, the axiality is high, low in manufacturing cost, easy maintenance's characteristics.
Description
Technical field
The utility model belongs to plunger pump technique field, especially relates to the sealed structure of a kind of high pressure plunger pump.
Background technology
At present at hydraulic pressure or the air piston pump of a large amount of use, the sealed structure adopted between its plunger with plunges pump body is the sealed structure become by multiple V-shaped ring stack combinations, the sealed structure of this kind of form, when hydraulic pressure or air piston pump new product, seal ring structure on it is effective for Leakage prevention, but after hydraulic pressure or air piston pump use for some time, due to the distortion of wear ring, plunger in hydraulic pressure or air piston pump axial direct operationally is linearly changed, namely the operation right alignment of plunger changes, thus cause hydraulic pressure or pneumatic plunger pump operation noise bigger, and cause wear ring to leak, the work-ing life of hydraulic pressure or air piston pump is shortened dramatically, affect the normal use of hydraulic pressure or air piston pump, also make troubles to routine work.
Practical novel content
The purpose of this utility model is to overcome prior art deficiency, it is provided that the sealed structure of a kind of high pressure plunger pump, has good seal performance, right alignment height, low cost of manufacture, feature easy to maintenance.
The technical solution of the utility model is: the sealed structure of a kind of high pressure plunger pump, the plunger cover comprising plunger and be set in outside plunger, described plunger comprises plunger stem and plunger tail, the diameter of described plunger stem is greater than the diameter of plunger tail, it is arranged with guide copper sleeve and upper sealed structure between described plunger stem and plunger are overlapped, described upper guide copper sleeve and upper sealed structure and plunger stem are slidably matched, it is arranged with lower guide copper sleeve and lower sealed structure between described plunger tail and plunger are overlapped, described lower guide copper sleeve and lower sealed structure and plunger tail are slidably matched.
Further, described upper sealed structure comprises sealed letter, upper retaining ring and upper sealing-ring group, and described upper sealed letter, upper retaining ring and upper sealing-ring group are sleeved on plunger stem successively.
Further, described upper sealed letter adopts graphite-filled PTFE-based composites to make.
Further, described upper sealing-ring group is made up of polyvinyl chloride soft seal circle.
Further, described lower sealed structure comprises lower retaining ring, lower sealed letter and lower seal group, and described lower retaining ring, lower sealed letter and lower seal group are sleeved in plunger tail successively.
Further, described lower sealed letter adopts graphite-filled PTFE-based composites to make.
Further, described lower seal group is made up of polyvinyl chloride soft seal circle.
The advantage that the utility model has and positively effect be: owing to adopting technique scheme, between the plunger stem of plunger and plunger tail and plunger are overlapped, guide copper sleeve and lower guide copper sleeve are set respectively, ensure that the right alignment of plunger, the running precision of plunger is greatly improved, solves the problem that existing plunger runs right alignment and cannot ensure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure:
1, plunger 2, plunger cover 3, upper guide copper sleeve
4, lower guide copper sleeve 5, upper sealed letter 6, upper retaining ring
7, upper sealing-ring group 8, lower retaining ring 9, lower sealed letter
10, lower seal group 1-1, plunger stem 1-2, plunger tail
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
Shown in structural representation as of the present utility model in Fig. 1, the utility model provides the sealed structure of a kind of high pressure plunger pump, the plunger cover 2 comprising plunger 1 and be set in outside plunger 1, described plunger 1 comprises plunger stem 1-1 and plunger tail 1-2, the diameter of described plunger stem 1-1 is greater than the diameter of plunger tail 1-2, it is arranged with guide copper sleeve 3 and upper sealed structure between described plunger stem 1-1 and plunger cover 2, described upper guide copper sleeve 3 and upper sealed structure and plunger stem 1-1 are slidably matched, it is arranged with lower guide copper sleeve 4 and lower sealed structure between described plunger tail 1-2 and plunger cover 2, described lower guide copper sleeve 4 and lower sealed structure and plunger tail 1-2 are slidably matched.
Described upper sealed structure comprises sealed letter 5, upper retaining ring 6 and upper sealing-ring group 7, and described upper sealed letter 5, upper retaining ring 6 and upper sealing-ring group 7 are sleeved on plunger stem 1-1 successively. Described upper sealed letter 5 adopts graphite-filled PTFE-based composites to make. Described upper sealing-ring group 7 is made up of polyvinyl chloride soft seal circle.
Described lower sealed structure comprises lower retaining ring 8, lower sealed letter 9 and lower seal group 10, and described lower retaining ring 8, lower sealed letter 9 and lower seal group 10 are sleeved on plunger tail 1-2 successively. Described lower sealed letter 9 adopts graphite-filled PTFE-based composites to make described lower seal group 10 to be made up of polyvinyl chloride soft seal circle.
The working process of this example: the sealed structure of the high pressure plunger pump that the utility model provides is in use, upper guide copper sleeve 3 and upper sealed structure are arranged between plunger stem 1-1 and plunger cover 2, lower guide copper sleeve 4 and lower sealed structure are arranged between plunger tail 1-2 and plunger cover 2, then plunger 1 is installed, a sealing mechanism is formed like this between plunger 1 and plunger cover 2, owing to have employed, guide copper sleeve 3 and lower guide copper sleeve 4 are set respectively between the plunger stem 1-1 and plunger tail 1-2 and plunger cover 2 of plunger 1, so sealing mechanism defines upper and lower two guide copper sleeves, ensure that the right alignment of plunger, the running precision of plunger is greatly improved, solve the problem that existing plunger runs right alignment and cannot ensure.
Can also add in upper sealed structure load onto sealed letter 5, on retaining ring 6 and upper sealing-ring group 7, lower sealed structure installs additional lower retaining ring 8, lower sealed letter 9 and lower seal group 10, more packs tightly plunger 1 and realize excellent sealing.
Above an embodiment of the present utility model is described in detail, but described content is only better embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model. All equalizations done according to the utility model application range change and improvement etc., all should still belong within patent covering scope of the present utility model.
Claims (7)
1. the sealed structure of a high pressure plunger pump, it is characterized in that: comprise plunger (1) and be set in plunger (1) plunger cover (2) outward, described plunger (1) comprises plunger stem (1-1) and plunger tail (1-2), the diameter of described plunger stem (1-1) is greater than the diameter of plunger tail (1-2), it is arranged with upper guide copper sleeve (3) and upper sealed structure between described plunger stem (1-1) and plunger cover (2), described upper guide copper sleeve (3) and upper sealed structure and plunger stem (1-1) are slidably matched, lower guide copper sleeve (4) and lower sealed structure it is arranged with between described plunger tail (1-2) and plunger cover (2), described lower guide copper sleeve (4) and lower sealed structure and plunger tail (1-2) are slidably matched.
2. the sealed structure of high pressure plunger pump according to claim 1, it is characterized in that: described upper sealed structure comprises sealed letter (5), upper retaining ring (6) and upper sealing-ring group (7), described upper sealed letter (5), upper retaining ring (6) and upper sealing-ring group (7) are sleeved on plunger stem (1-1) successively.
3. the sealed structure of high pressure plunger pump according to claim 2, it is characterised in that: described upper sealed letter (5) adopts graphite-filled PTFE-based composites to make.
4. the sealed structure of high pressure plunger pump according to claim 2, it is characterised in that: described upper sealing-ring group (7) is made up of polyvinyl chloride soft seal circle.
5. the sealed structure of high pressure plunger pump according to claim 1, it is characterized in that: described lower sealed structure comprises lower retaining ring (8), lower sealed letter (9) and lower seal group (10), described lower retaining ring (8), lower sealed letter (9) and lower seal group (10) are sleeved in plunger tail (1-2) successively.
6. the sealed structure of high pressure plunger pump according to claim 5, it is characterised in that: described lower sealed letter (9) adopts graphite-filled PTFE-based composites to make.
7. the sealed structure of high pressure plunger pump according to claim 5, it is characterised in that: described lower seal group (10) is made up of polyvinyl chloride soft seal circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521099638.1U CN205315251U (en) | 2015-12-23 | 2015-12-23 | High pressure plunger pump's seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521099638.1U CN205315251U (en) | 2015-12-23 | 2015-12-23 | High pressure plunger pump's seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205315251U true CN205315251U (en) | 2016-06-15 |
Family
ID=56198244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521099638.1U Expired - Fee Related CN205315251U (en) | 2015-12-23 | 2015-12-23 | High pressure plunger pump's seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205315251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664121A (en) * | 2017-11-20 | 2018-02-06 | 中国石油化工股份有限公司 | A kind of oil field special vehicle high-pressure plunger pump |
-
2015
- 2015-12-23 CN CN201521099638.1U patent/CN205315251U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664121A (en) * | 2017-11-20 | 2018-02-06 | 中国石油化工股份有限公司 | A kind of oil field special vehicle high-pressure plunger pump |
| CN107664121B (en) * | 2017-11-20 | 2019-09-03 | 中国石油化工股份有限公司 | A kind of oil field special vehicle high-pressure plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20161223 |