CN201953640U - Double-water-seal sealing structure of plunger pump - Google Patents
Double-water-seal sealing structure of plunger pump Download PDFInfo
- Publication number
- CN201953640U CN201953640U CN2010206667980U CN201020666798U CN201953640U CN 201953640 U CN201953640 U CN 201953640U CN 2010206667980 U CN2010206667980 U CN 2010206667980U CN 201020666798 U CN201020666798 U CN 201020666798U CN 201953640 U CN201953640 U CN 201953640U
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- China
- Prior art keywords
- water seal
- plunger
- pump head
- pump
- seat
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- Expired - Lifetime
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Abstract
The utility model discloses a double-water-seal sealing structure of a plunger pump, which comprises a pump head, a plunger piston and a box body, wherein the pump head and the box body are respectively and internally provided with a working cavity, and the plunger piston can slide in the working cavities; the pump head is provided with a main water seal; and the plunger piston passes through the main water seal and extends into the working cavity of the pump head. The double-water-seal sealing structure of the plunger pump is characterized in that one side of the main water seal, close to the box body is sheathed with an auxiliary water seal seat; and the auxiliary water seal seat is internally provided with an auxiliary water seal sheathed at the periphery of the plunger piston. The double-water-seal sealing structure of the plunger pump is good in sealing performance and long in service life.
Description
Technical field
The utility model relates to a kind of plunger pump, relates in particular to the plunger pump of a kind of pair of water seal sealing.
Background technique
Along with the attention of people to environment and object housekeeping, the application of pressured fluid implement is more and more general.Wherein relatively typical application is a jetting machine, and jetting machine mainly is made of spray gun and high-pressure water pump two-part, and water seal is the important sealing configuration of high-pressure water pump.The water seal sealing configuration of tradition plunger pump adopts single water seal sealing configuration, as Fig. 1, comprise plunger 1, pump head 2 and casing 7, be provided with the active chamber 12 that slides for plunger 1 in pump head 2 and the casing 7, pump head 2 is provided with main water seal 3, plunger 1 passes main water seal 3 and stretches into active chamber 12, be provided with the packing ring 6 that is used for fastening main water seal between main water seal and the casing, main water seal 3 with the sliding process of plunger 1 in wearing and tearing easily, after main water seal is leaked, just no longer have sealing function so poor sealing performance, working life is short, the whole pump performance of influence.
Summary of the invention
The purpose of this utility model is the two water seal sealing configurations that propose a kind of plunger pump, can overcome the problem that single water seal poor sealing performance, working life are lacked.
The purpose of this utility model will be achieved by the following technical programs:
Two water seal sealing configurations of plunger pump, comprise pump head, plunger and casing, be provided with the active chamber that slides for plunger in described pump head and the casing, described pump head is provided with main water seal, described plunger passes in the active chamber that main water seal stretches into pump head, described main water seal is arranged with secondary water seal seat near a side of casing, is provided with the secondary water seal that is set in described plunger periphery in the described secondary water seal seat.
Further, two water seal sealing configurations of above-mentioned plunger pump, wherein: described pump head is provided with pump head return port and the low pressure water channel that is interconnected, and is provided with return port in the described secondary water seal seat, and described return port communicates with the pump head return port.
Further, two water seal sealing configurations of above-mentioned plunger pump, wherein: be provided with the gap between described secondary water seal seat and the plunger.
Further, two water seal sealing configurations of above-mentioned plunger pump, wherein: the surface of contact of described secondary water seal seat and pump head is provided with annular groove, is arranged with the O-ring seals that is used to seal pump head and secondary water seal seat on the described annular groove.
Further, two water seal sealing configurations of above-mentioned plunger pump, wherein: be provided with the packing ring that is used for the locating pair water seal between described secondary water seal seat and the casing.
Further, two water seal sealing configurations of above-mentioned plunger pump, wherein: be close-fitting between described main water seal, secondary water seal seat and the pump head and be connected.
Further, two water seal sealing configurations of above-mentioned plunger pump, wherein: be sliding connection between described plunger and main water seal, the secondary water seal seat.
Outstanding effect of the present utility model is: after main water seal is leaked, still have secondary water seal can play seal action, owing to be provided with the gap between secondary water seal seat and the plunger, the water that leaks is got back in the pump by return port, sealability is better, simultaneously, the water in the gap also can play lubrication to plunger, thereby has increased the working life of water seal.
Following constipation closes embodiment's accompanying drawing, embodiment of the present utility model is described in further detail, so that technical solutions of the utility model are easier to understand, grasp.
Description of drawings
Fig. 1 is the sectional view of the single water seal plunger pump of prior art;
Fig. 2 is the sectional view that the utlity model has the plunger pump of two water seal sealing configurations.
Embodiment
Two water seal sealing configurations of the utility model plunger pump, as Fig. 2, comprise plunger 1, pump head 2 and casing 7, be provided with the active chamber 12 that slides for plunger 1 in described pump head 2 and the casing 7, described pump head 2 is provided with main water seal 3, described plunger 1 passes in the active chamber that main water seal 3 stretches into pump head 2 12, and described main water seal 3 is arranged with secondary water seal seat 4 near a side of casings 7, is provided with the secondary water seal 5 that is set in plunger 1 periphery in the secondary water seal seat 4.Also be provided with the pump head return port 9 and the low pressure water channel 11 that are interconnected on the described pump head 2, be provided with return port 10 in the described secondary water seal seat 4, described return port 10 communicates with pump head return port 9.Be provided with gap 13 between described secondary water seal seat 4 and the plunger 1.Described secondary water seal seat 4 is provided with annular groove with the surface of contact of pump head 2, is arranged with the O-ring seals 8 that is used to seal pump head 2 and secondary water seal seat 4 on the described annular groove.Be provided with the packing ring 6 that is used for locating pair water seal 5 between described secondary water seal seat 4 and the casing 7.Being close-fitting between described main water seal 3, secondary water seal seat 4 and the pump head 2 is connected.Be sliding connection between described plunger 1 and main water seal 3, the secondary water seal seat 4.
When using the utility model, be connected owing to be close-fitting between main water seal 3, secondary water seal seat 4 and the pump head 2, and packing ring 6 is used for locating pair water seal 5, after main water seal 3 leakages, still have secondary water seal 5 can play seal action, therefore sealing structure performance of the present utility model is good.And in case leak, because the existence in the gap 13 between secondary water seal seat 4 and the plunger 1, the water of leakage is got back to low pressure water channel 11 in the pump by gap 13, return port 10, simultaneously, water in the gap 13 also can play lubrication to plunger 1, thereby has increased the working life of water seal.
The utility model still has numerous embodiments, and all employing equivalents or equivalent transformation and all technological schemes of forming all drop within the protection domain of the present utility model.
Claims (7)
1. two water seal sealing configurations of plunger pump, comprise pump head, plunger and casing, be provided with the active chamber that slides for plunger in described pump head and the casing, described pump head is provided with main water seal, described plunger passes in the active chamber that main water seal stretches into pump head, it is characterized in that: described main water seal is arranged with secondary water seal seat near a side of casing, is provided with the secondary water seal that is set in described plunger periphery in the described secondary water seal seat.
2. two water seal sealing configurations of plunger pump according to claim 1, it is characterized in that: described pump head is provided with pump head return port and the low pressure water channel that is interconnected, and is provided with return port in the described secondary water seal seat, and described return port communicates with the pump head return port.
3. two water seal sealing configurations of plunger pump according to claim 2 is characterized in that: be provided with the gap between described secondary water seal seat and the plunger.
4. two water seal sealing configurations of plunger pump according to claim 1, it is characterized in that: the surface of contact of described secondary water seal seat and pump head is provided with annular groove, is arranged with the O-ring seals that is used to seal pump head and secondary water seal seat on the described annular groove.
5. two water seal sealing configurations of plunger pump according to claim 1 is characterized in that: be provided with the packing ring that is used for the locating pair water seal between described secondary water seal seat and the casing.
6. two water seal sealing configurations of plunger pump according to claim 1 is characterized in that: be close-fitting between described main water seal, secondary water seal seat and the pump head and be connected.
7. two water seal sealing configurations of plunger pump according to claim 1 is characterized in that: be sliding connection between described plunger and main water seal, the secondary water seal seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206667980U CN201953640U (en) | 2010-12-17 | 2010-12-17 | Double-water-seal sealing structure of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206667980U CN201953640U (en) | 2010-12-17 | 2010-12-17 | Double-water-seal sealing structure of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201953640U true CN201953640U (en) | 2011-08-31 |
Family
ID=44497753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206667980U Expired - Lifetime CN201953640U (en) | 2010-12-17 | 2010-12-17 | Double-water-seal sealing structure of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201953640U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470464A (en) * | 2013-08-27 | 2013-12-25 | 深圳市百欧森环保科技开发有限公司 | High-pressure plunger pump |
| US20150093264A1 (en) * | 2013-09-30 | 2015-04-02 | Leuco S.P.A. | Pump |
-
2010
- 2010-12-17 CN CN2010206667980U patent/CN201953640U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470464A (en) * | 2013-08-27 | 2013-12-25 | 深圳市百欧森环保科技开发有限公司 | High-pressure plunger pump |
| CN103470464B (en) * | 2013-08-27 | 2016-12-28 | 深圳市百欧森环保科技开发有限公司 | A kind of high pressure plunger water pump |
| US20150093264A1 (en) * | 2013-09-30 | 2015-04-02 | Leuco S.P.A. | Pump |
| CN104612958A (en) * | 2013-09-30 | 2015-05-13 | 莱乌科股份公司 | A pump |
| US9677548B2 (en) * | 2013-09-30 | 2017-06-13 | Leuco S.P.A. | Pump |
| CN104612958B (en) * | 2013-09-30 | 2017-12-26 | 莱乌科股份公司 | Pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |
|
| CX01 | Expiry of patent term |