CN2818849Y - Spacing valve - Google Patents
Spacing valve Download PDFInfo
- Publication number
- CN2818849Y CN2818849Y CN 200520015178 CN200520015178U CN2818849Y CN 2818849 Y CN2818849 Y CN 2818849Y CN 200520015178 CN200520015178 CN 200520015178 CN 200520015178 U CN200520015178 U CN 200520015178U CN 2818849 Y CN2818849 Y CN 2818849Y
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- CN
- China
- Prior art keywords
- valve
- spool
- valve pocket
- radial direction
- hole
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- Expired - Fee Related
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- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses limited valve, belong to Hydraulic Diaphragm Metering Pump component technology field.Described limited valve comprises the valve pocket and the spool that cooperatively interact, and the spool right-hand member is provided with limit body, cooperate between limit body and the valve pocket and be provided with limit spring, spool left end position is provided with spacing back-up ring, and the spool middle part is provided with tool withdrawal groove, and the corresponding radial direction through hole that cooperates with this tool withdrawal groove is set on the valve pocket.Described limited valve, rational in infrastructure ingenious, by being equipped with radial direction through hole, tool withdrawal groove and spring, effectively controlled the diaphragm deflection distortion at back dead point, realize the size of control repairing amount automatically; Also improved the measuring accuracy of pump and the working life of barrier film simultaneously.
Description
Technical field
The utility model relates to the Hydraulic Diaphragm Metering Pump parts, is specifically related to limited valve.
Background technique
In traditional Hydraulic Diaphragm Metering Pump, mainly be to control barrier film front and back deflection deformation by limiting board, very few when oil mass, barrier film forms the vacuum repairing near the back confinement plate, the size of repairing amount is difficult to control, directly influence the measuring accuracy of pump and the flex life of barrier film,, promptly control the size of repairing amount automatically for the effectively diaphragm deflection distortion at dead point, control back, improve measuring accuracy and barrier film working life of pump, be badly in need of a kind of new recharging oil device of research.
The model utility content
For overcoming problems of the prior art, the utility model aims to provide a kind of limited valve that can control the size of repairing amount, the measuring accuracy that improves pump and barrier film working life automatically.
Described limited valve comprises the valve pocket and the spool that cooperatively interact, and the spool right-hand member is provided with limit body, cooperate between limit body and the valve pocket and be provided with limit spring, spool left end position is provided with spacing back-up ring, and the spool middle part is provided with tool withdrawal groove, and the corresponding radial direction through hole that cooperates with this tool withdrawal groove is set on the valve pocket.
Described limited valve, its inside and outside wall relevant position, valve pocket middle part is respectively equipped with annular groove, and radial direction through hole is arranged on this annular groove.
Described limited valve, its valve pocket is provided with fixedly back-up ring.
Described limited valve, the radial direction through hole left and right sides of its valve pocket is respectively equipped with seal ring.
Described limited valve, rational in infrastructure ingenious, by being equipped with radial direction through hole, tool withdrawal groove and spring, effectively controlled the diaphragm deflection distortion at back dead point, realize the size of control repairing amount automatically; Also improved the measuring accuracy of pump and the working life of barrier film simultaneously.
Description of drawings
Fig. 1 is vertical sectional structure schematic representation of the utility model one preferred embodiment.
Fig. 2 is vertical sectional structure schematic representation of the applied Hydraulic Diaphragm Metering Pump of the utility model.
Embodiment
Now, describe a preferred embodiment of the present utility model in detail in conjunction with Figure of description.
Limited valve shown in Figure 1, comprise the valve pocket 5 and the spool 7 that cooperatively interact, spool 7 right-hand members are provided with limit body 8, cooperate between limit body 8 and the valve pocket 5 and be provided with limit spring 6, spool 7 left end positions are provided with spacing back-up ring 1, and this spacing back-up ring 1 plays the effect that connects valve pocket 5 and limit the axial displacement of spool 7.Spool 7 middle parts are provided with tool withdrawal groove 8, and valve pocket 5 middle part inside and outside wall same positions are respectively equipped with annular groove, and this annular groove is provided with the radial direction through hole 9 with this tool withdrawal groove 8 corresponding four symmetries that cooperate, thereby constitute the repairing passage.Valve pocket 5 is provided with fixedly back-up ring 2, when limited valve is installed on the cylinder body 30 of diaphragm metering pump, this fixedly back-up ring 2 be used for fixing limited valve.Valve pocket 5 is respectively equipped with seal ring 3,4 in the above-mentioned annular groove left and right sides, guarantees the sealing that is connected of limited valve and cylinder body 30.
Hydraulic Diaphragm Metering Pump shown in Figure 2, comprise Fill valve, Gassy Relief Valve and above-mentioned limited valve, limited valve is installed in the central authorities of pump cylinder 30, Fill valve is installed in the following position of the vertical position of cylinder body 30, limited valve and Fill valve have a repairing passage 44 that communicates to be communicated with respectively that the Fill valve top exports and limited valve valve pocket 5 on annular groove.Described Fill valve comprises the pressure valve nut 40 of repairing valve seat 41 and corresponding cooperation, and this pressure valve nut 40 is used for Fill valve is fixed on the cylinder body 30 of Hydraulic Diaphragm Metering Pump.Repairing radial direction through hole 33 is set on the repairing valve seat 41, repairing valve seat 41 arranged outside and the repairing radial direction through hole 33 corresponding filter screens that cooperate 32, this filter screen 32 is used to clean the fluid of institute's supply, cooperate in the repairing valve seat 41 and be equipped with connecting rod ball 42, this connecting rod ball 42 can move axially, the aperture of the spheroid of connecting rod ball 42 and repairing valve seat 41 constitutes a pair of sealing pair, guarantee institute's supply fluid one-way flow, the body of rod bottom of connecting rod ball 42 is provided with the repairing spring 35 of repairing spring seat 37 and corresponding cooperation, and the bottom of repairing spring seat 37 cooperates with the body of rod of connecting rod ball 42 and is provided with locking nut 38.Press the bottom cooperation of valve nut 40 to be provided with sealing nut 39, sealing nut 39 guarantees the sealing of whole Fill valve.Press between valve nut 40 and the sealing nut 39 and be provided with sealing gasket 37.Repairing valve seat 41 upper ends are provided with seal ring 43, press the upper outside of valve nut 40 to be provided with lower seal 34, guarantee the sealing that is connected of Fill valve and cylinder body 30.Described Gassy Relief Valve, comprise Safety valve body 15, Safety valve body 15 outsides are equipped with O RunddichtringO 22, the cooperation of Safety valve body 15 bottoms is provided with emergency valve seat 11, emergency valve seat 11 bottoms are provided with down O RunddichtringO 29, emergency valve seat 11 is provided with safe axial hole 28 respectively, safe radial direction through hole 25, be provided with safe spool 12 in Safety valve body 15 chambeies, be arranged with guide rod 14 on the safe spool 12, be provided with ball pad 13 between guide rod 14 and the safe spool 12, this guide rod 14 is provided with spring seat 19 and corresponding safety spring 21, the upper-end surface of Safety valve body 15 is provided with locking nut 16, Safety valve body 15 tops are provided with adjusting nut 17, are used to regulate the compression strength of safety spring 21, and adjusting nut 17 tops are provided with and show window 18, be used to check the inner case of Gassy Relief Valve, be equipped with venting spool 24 in safe spool 12 chambeies, venting valve spring 23 and valve ball 20, venting spool 24 belows are provided with gap spacer 26 and back-up ring 27, and the Lift of venting spool 24 can be regulated by gap spacer 26 and back-up ring 27.
Above-mentioned three valve working procedure are as follows.When the hydraulic-oil quantity in the hydraulic pressure cavity 45 between plunger in the Hydraulic Diaphragm Metering Pump 46 and the barrier film 31 reduces to a certain amount of owing to leakage, in the plunger 46 imbibition processes, drive moving barrier film 31 deflection left, spool 7 in the drive limited valve is moved to tool withdrawal groove 9 left and communicates with hydraulic pressure cavity 45, at this moment, the fluid of supply is through the filter screen 32 in the Fill valve, repairing radial direction through hole 33, with connecting rod ball 42 jack-up, fluid enters feed channel from the outlet of backing down, radial direction through hole on the annular groove 10 and tool withdrawal groove 9 mend hydraulic pressure cavity 45 in limited valve again, hydraulic pressure oil subsidies in the hydraulic pressure cavity 45 are when a certain amount of, because pressure increases in the hydraulic pressure cavity 45, promote spool 7 and move right, close the passage between tool withdrawal groove 9 and the hydraulic pressure cavity 45, thereby realize the size of control repairing amount automatically.The working procedure of described Gassy Relief Valve: when the Hydraulic Diaphragm Metering Pump system oil pressure surpasses the impacting force of the safety spring 21 on the safe spool 12, fluid passes through safe axial hole 28 with safe spool 12 jack-up, thereby, fluid can flow out through safety radial direction through hole 25, the Load Relief System oil pressure plays the effect of protection whole system; Because the oil pressure of Hydraulic Diaphragm Metering Pump produces pulsation with plunger 46 to-and-fro motion, in plunger 46 imbibition processes, venting spool 24 is deflated valve spring 23 and pushes open, at this moment, exist the gas in the oil pocket to discharge, and back down outside valve ball 20 excavationg pumps along the clearance gap that the venting spool is pushed; And when plunger 46 discharge opeings, because of oil pocket pressure increases gradually, venting spool 24 compresses venting valve spring 23, closes exhaust.
Claims (4)
1. limited valve, comprise the valve pocket (5) and the spool (7) that cooperatively interact, it is characterized in that: spool (7) right-hand member is provided with limit body (8), cooperate between limit body (8) and the valve pocket (5) and be provided with limit spring (6), spool (7) left end position is provided with spacing back-up ring (1), spool (7) middle part is provided with tool withdrawal groove (8), and valve pocket (5) is gone up the corresponding radial direction through hole that cooperates with this tool withdrawal groove (8) (9) is set.
2. limited valve as claimed in claim 1 is characterized in that: inside and outside wall relevant position, valve pocket (5) middle part is respectively equipped with annular groove, and radial direction through hole (9) is arranged on this annular groove.
3. limited valve as claimed in claim 1 is characterized in that: valve pocket (5) is provided with fixedly back-up ring (2).
4. limited valve as claimed in claim 1 is characterized in that: radial direction through hole (9) left and right sides of valve pocket (5) is respectively equipped with seal ring (3,4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015178 CN2818849Y (en) | 2005-09-27 | 2005-09-27 | Spacing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015178 CN2818849Y (en) | 2005-09-27 | 2005-09-27 | Spacing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2818849Y true CN2818849Y (en) | 2006-09-20 |
Family
ID=37004904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520015178 Expired - Fee Related CN2818849Y (en) | 2005-09-27 | 2005-09-27 | Spacing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2818849Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628227A (en) * | 2020-11-19 | 2021-04-09 | 上海顺子机械制造有限公司 | Limiting valve |
-
2005
- 2005-09-27 CN CN 200520015178 patent/CN2818849Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628227A (en) * | 2020-11-19 | 2021-04-09 | 上海顺子机械制造有限公司 | Limiting valve |
| CN112628227B (en) * | 2020-11-19 | 2022-11-18 | 上海威弗德机械(集团)有限公司 | Limiting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Ailipu Pump Co., Ltd. Assignor: Luo Xianyao Contract fulfillment period: 2008.8.11 to 2015.9.26 Contract record no.: 2008330001448 Denomination of utility model: Stroke limiting valve for hydraulic lifting equipment Granted publication date: 20060920 License type: Exclusive license Record date: 20081029 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.11 TO 2015.9.26; CHANGE OF CONTRACT Name of requester: ZHEJIANG PROVINCE AIRYOKPO PUMP CO., LTD. Effective date: 20081029 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060920 Termination date: 20140927 |
|
| EXPY | Termination of patent right or utility model |