CN205172926U - Sealed piston - Google Patents
Sealed piston Download PDFInfo
- Publication number
- CN205172926U CN205172926U CN201520950198.XU CN201520950198U CN205172926U CN 205172926 U CN205172926 U CN 205172926U CN 201520950198 U CN201520950198 U CN 201520950198U CN 205172926 U CN205172926 U CN 205172926U
- Authority
- CN
- China
- Prior art keywords
- piston
- valve body
- piston cap
- spool
- cap
- 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
Links
Abstract
The utility model relates to a piston discloses a sealed piston, and it includes piston rod (1), piston cap (2) and feed liquor valve (3), and the lower tip structure of piston cap (2) has the interior structure of sealed face (21) and piston cap (2) to have the cavity that open side down (22), and the upper end of piston cap (2) is equipped with feed liquor hole (23), be equipped with on valve body (31) of feed liquor valve (3) with liquid inlet flow channel (33) of feed liquor hole (23) intercommunication, case (32) one end is passed valve body (31) and can be reciprocating motion in valve body (31), be equipped with on case (32) to support spring (34) of pressing with case (32) towards sealed face (21) direction of piston cap (2), the utility model discloses a design the piston structure, make it when travelling forward, the case can be fast under inertial force and spring force and the valve body closed for the space phegmal reflux that liquid was followed between case and the piston reduces, thereby effectively reduces the interior liquid loss of pump.
Description
Technical field
The utility model relates to a kind of piston, particularly relates to a kind of for the sealed type piston in fluid filling pump.
Background technique
Piston is widely used in all kinds of pump housing, and it mainly plays the driving effect to pump in-vivo medium, to realize pump housing work.Generally be provided with the Sealing for seal fluid runner in the piston cap of existing piston, its to-and-fro motion under the effect of fluid pressure, but its sealing effect is poor, and in the course of the work can not quick-make, thus can make pump housing loss of liquid.
Summary of the invention
The utility model, for the problem that loss of liquid is larger in the course of the work of piston in prior art, provides a kind of sealed mode piston.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Sealed type piston, comprises piston rod and piston cap, also comprises liquid feed valve, and piston cap underpart is configured with sealing surface and is configured with the cavity that Open Side Down in piston cap, and liquid feed valve is positioned at described cavity, and piston cap upper end is provided with the inlet opening for liquid feed valve feed liquor; Liquid feed valve comprises valve body and spool, and valve body is provided with the feed liquor runner be communicated with inlet opening, and spool one end is through valve body and can moving reciprocatingly in valve body, and spool is provided with the spring compressed towards the sealing surface direction of piston cap by spool.
The utility model in use, when piston rod drives piston to move up, the pump chamber of piston lower portion is negative pressure, the elastic force that feed liquor spool overcomes the first spring is subjected to displacement downwards thus makes liquid feed valve conducting, liquid now in upper piston area pump chamber flows into the pump chamber of piston lower portion through liquid feed valve, when piston advances forward, the spool of liquid feed valve moves towards the sealing surface of piston under inertial force and spring force, the sealed department of spool is contacted with the sealing surface of piston cap, realize the rapid closing bottom piston cap, reduce loss of liquid in pump.
As preferably, spool is cone rod shape, and it comprises through valve body and the bar portion that can move reciprocatingly in valve body and can form with the sealing surface of piston cap the sealed department sealed.
As preferably, the sealing surface of piston cap and the sealed department of spool are equipped with the low temperature resistant wear-resistant alloy layer of one deck.Adopt this kind of design that piston cap and spool can be made not only to possess preferably sealability and can also possess the working life being better than existing valve body.
As preferably, described piston rod and piston cap one-body molded.Piston rod and piston cap are designed to one-body molded, can effectively simplify piston production technology, improve efficiency of assembling.
The utility model, owing to have employed above technological scheme, has significant technique effect:
The utility model is by designing piston structure, make it when travelling forward, spool under inertial force and spring force can fast and valve body close, liquid is reduced from the space capacity of reflux between spool and piston, thus effectively reduce loss of liquid in pump, also make the liquid supply pressure of whole liquor pump to reach 0.8 ~ 2.5MPa, feed flow distance can reach more than 500 meters simultaneously, and clean malleation header value requires lower.
Accompanying drawing explanation
Fig. 1 is the closed state structural representation of embodiment 1;
Fig. 2 is the opening state structural representation of embodiment 1.
The toponym that in accompanying drawing, each number designation refers to is as follows: 1-piston rod, 2-piston cap, 3-liquid feed valve, 21-sealing surface, 22-cavity, 23-inlet opening, 31-valve body, 32-spool, 33-feed liquor runner, 34-spring, 35-department of assembly, 321-bar portion, 322-sealed department.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment 1
Sealed type piston, as shown in Figure 1 and Figure 2, comprise integrated piston rod 1 and piston cap 2, also comprise liquid feed valve 3, the underpart of piston cap 2 is configured with sealing surface 21 and is configured with the cavity 22 that Open Side Down in piston cap 2, liquid feed valve 3 be positioned at described cavity 22 and with air inwall interference fit, to ensure the sealing in gap between the two, the upper end of piston cap 2 is provided with the inlet opening 23 for liquid feed valve 3 feed liquor, and the quantity of inlet opening 23 is decided according to the actual requirements, liquid feed valve 3 comprises valve body 31 and spool 32, valve body 31 is provided with the feed liquor runner 33 be communicated with inlet opening 23, the department of assembly 35 of assembling for spool 32 is provided with in the middle part of valve body 31, spool 32 is cone rod shape, it comprises the department of assembly through valve body 31 and the bar portion 321 that can move reciprocatingly in valve body 31 and can form with the sealing surface 21 of piston cap 2 sealed department 322 sealed, spool 32 is provided with the spring 34 compressed towards sealing surface 21 direction of piston cap 2 by spool 32, the end in the bar portion 321 of spool 32 is fixed with spring seat by nut, spring 34 one end is against in the department of assembly of valve body 31, the other end is against on spring seat.
The underpart of piston cap 2 is configured with sealing surface 21, the sealed department of spool 32 contacts with sealing face is corresponding, form sealing between the two, the face that the sealing surface 21 of piston cap 2 and sealed department 322 contact with sealing surface is equipped with the low temperature resistant wear-resistant alloy layer of one deck, to improve sealing effect between the two, improve the working life of piston simultaneously.
In the present embodiment, the working procedure of piston is as follows:
Piston cap 2 under the effect of piston rod 1 with valve body 31 relative movement, the elastic force that valve body 31 overcomes spring 34 moves towards sealing surface 21 direction away from piston cap 2 end, now namely liquid enter piston cap 2 internal cavities 22 from the inlet opening 23 of piston cap 2, then the feed liquor runner 33 on spool 32 is from the inflow pump of piston cap 2 underpart.Simultaneously, when the piston is moving down, move in sealing surface 21 direction of spool 32 towards piston cap 3 under inertial force and the effect of spring 34 elastic force, make the sealed department 322 of spool 32 and sealing surface 21 rapid closing of piston cap 2, reduce liquid to reflux from the space between spool 32 and piston cap 2, thus effectively reduce loss of liquid in pump.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (4)
1. sealed type piston, comprise piston rod (1) and piston cap (2), it is characterized in that: also comprise liquid feed valve (3), the underpart of piston cap (2) is configured with sealing surface (21) and is configured with the cavity (22) that Open Side Down in piston cap (2), liquid feed valve (3) is positioned at described cavity (22), and the upper end of piston cap (2) is provided with the inlet opening (23) for liquid feed valve (3) feed liquor; Liquid feed valve (3) comprises valve body (31) and spool (32), valve body (31) is provided with the feed liquor runner (33) be communicated with inlet opening (23), spool (32) one end is through valve body (31) and can moving reciprocatingly in valve body (31), and spool (32) is provided with the spring (34) compressed towards sealing surface (21) direction of piston cap (2) by spool (32).
2. sealed type piston according to claim 1, it is characterized in that: spool (32) is cone rod shape, it comprises through valve body (31) and the bar portion (321) that can move reciprocatingly in valve body (31) and can form with the sealing surface of piston cap (2) (21) sealed department (322) sealed.
3. sealed type piston according to claim 2, is characterized in that: the sealing surface (21) of piston cap (2) and the sealed department (322) of spool (32) are equipped with the low temperature resistant wear-resistant alloy layer of one deck.
4., according to the sealed type piston in claim 1-3 described in any one, it is characterized in that: piston rod (1) and piston cap (2) one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520950198.XU CN205172926U (en) | 2015-11-24 | 2015-11-24 | Sealed piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520950198.XU CN205172926U (en) | 2015-11-24 | 2015-11-24 | Sealed piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172926U true CN205172926U (en) | 2016-04-20 |
Family
ID=55736928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520950198.XU Expired - Fee Related CN205172926U (en) | 2015-11-24 | 2015-11-24 | Sealed piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446181A (en) * | 2021-08-31 | 2021-09-28 | 宁波合力机泵股份有限公司 | Horizontal double-acting reciprocating pump liquid end for feeding liquid in middle and reciprocating pump |
-
2015
- 2015-11-24 CN CN201520950198.XU patent/CN205172926U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446181A (en) * | 2021-08-31 | 2021-09-28 | 宁波合力机泵股份有限公司 | Horizontal double-acting reciprocating pump liquid end for feeding liquid in middle and reciprocating pump |
| CN113446181B (en) * | 2021-08-31 | 2021-11-05 | 宁波合力机泵股份有限公司 | Horizontal double-acting reciprocating pump liquid end for feeding liquid in middle and reciprocating pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210825 Address after: 313000 Chengnan Industrial Park, Heping Town, Changxing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang Tailian Low Temperature Technology Co.,Ltd. Address before: 310000 Cangqian Jie Dao Yong Le Cun, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU TAILIAN LOW-TEMPERATURE EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20211124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |