CN203162295U - Proportional three-way reducing valve - Google Patents
Proportional three-way reducing valve Download PDFInfo
- Publication number
- CN203162295U CN203162295U CN 201320121175 CN201320121175U CN203162295U CN 203162295 U CN203162295 U CN 203162295U CN 201320121175 CN201320121175 CN 201320121175 CN 201320121175 U CN201320121175 U CN 201320121175U CN 203162295 U CN203162295 U CN 203162295U
- Authority
- CN
- China
- Prior art keywords
- bonnet
- valve
- spool
- hole
- reducing valve
- 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 - Lifetime
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- Magnetically Actuated Valves (AREA)
- Safety Valves (AREA)
Abstract
The utility model relates to a proportional three-way reducing valve. The proportional three-way reducing valve comprises a valve housing, as well as a bonnet, a return spring and a valve core which are all mounted inside the valve housing, wherein a proportional electromagnet is arranged above the valve housing, and is in contact with the bonnet through a pushing rod; the bonnet is pressed at the upper end of the valve core in an interference fit manner; the return spring is arranged at the lower part of the bonnet and is in contact with the valve housing; the valve core is of a trap cut structure; an axial central hole is formed in the center of the valve core; a ring-shaped groove is formed in the outer wall of the middle of valve core; two radial through holes, which are perpendicular to each other and are communicated with the axial central hole, are formed in the ring-shaped groove; and the first radial through hole is close to the upper end of the ring-shaped groove of the valve core, and the second radial through hole is close to the lower end of the ring-shaped groove of the valve core. According to the proportional three-way reducing valve, when the proportional electromagnet is powered off suddenly, pressure oil can return to an oil tank, and the pressure is reduced to protect the system; and meanwhile, the valve body has the characteristics of simple structure, low manufacture cost and light and convenient operation.
Description
Technical field
The utility model relates to a kind of ratio three-way pressure reducing valve, belongs to the electrofluidic control device technical field.
Background technique
The control of multiple directional control valve now more adopts electric liquid guide to control, existing guide's control unit adopts three-way pressure reducing valve more, when after oil supply pressure is set up, comprising other final controlling element operations, pilot pressure oil enters the control chamber that its pilot-actuated valve is not applied the multi-way valve of control signal, may cause misoperation, when unexpected dead electricity, owing to in time release control oil, also may cause damage to system, bring potential safety hazard to operation.
Summary of the invention
Technical problem to be solved in the utility model is: proposes a kind of ratio three-way pressure reducing valve, has compact structure, and simple efficient, effectively reduce proportion electro-magnet getting the impact that produces when changing between electric and the dead electricity, system is played the effect of protection.
The technological scheme that the utility model solves above technical problem is: a kind of ratio three-way pressure reducing valve is provided, comprise valve pocket and be installed in described valve pocket interior bonnet, Returnning spring and spool, being provided with proportion electro-magnet on described valve pocket top contacts with described bonnet through push rod, described bonnet adopts the mode of interference fit to be pressed into the upper end of described spool, and described Returnning spring is arranged on described bonnet bottom and contacts with described valve pocket; Described spool is ladder-type structure, the center of described spool has an axial center hole, and the outer wall in the middle of described spool arranges an annular groove, have two radial direction through hole orthogonal and that communicate with described axial center hole at described annular groove place, first radial direction through hole is near the annular groove upper end of described spool, and second radial direction through hole is near the lower end of described spool annular groove.
The technological scheme that the utility model further limits is: aforesaid ratio three-way pressure reducing valve, described Returnning spring is the awl spring, the big end of described awl spring contacts with described valve pocket, small end contacts with described bonnet lower end surface, and adopting the benefit of awl spring is to have better stability when spool is moved.
Aforesaid ratio three-way pressure reducing valve, the upper end of described spool have a cylinder with large diameter section, and when described proportion electro-magnet was not charged, the bottom of cylinder with large diameter section contacted with valve pocket, play a spacing effect.
Further, aforesaid ratio three-way pressure reducing valve, described bonnet is made by the resin material, can avoid proportion electro-magnet to get when changing between electric and the dead electricity and the rigid phenomenon that contacts occur, and reduces to impact.
The utility model has the advantages that: bonnet of the present utility model adopts resin material, can effectively reduce proportion electro-magnet and get the impact that produces when changing between electric and the dead electricity; Returnning spring adopts the awl spring, and the awl spring can make the movement of spool more stable; Incoming pressure can be reduced to needed delivery pressure, this delivery pressure only with being in proportion of the electric current of proportion electro-magnet, and it is irrelevant with the variation of incoming pressure, when making by the control chamber pressure rising of control element if be subjected to certain interference, can get rid of interference automatically, it is constant to keep delivery pressure; When proportion electro-magnet cut off the power supply suddenly, pressure oil can be let out oil sump tank, and pressure reduces, and system is played the effect of protection; This cover valve body of while also has simple in structure, and cost is low, operates light characteristics.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is principle schematic of the present utility model.
Embodiment
Embodiment one
Present embodiment is a kind of ratio three-way pressure reducing valve, structure as shown in Figure 1, comprise valve pocket 4 bonnet 2 interior with being installed in valve pocket, reset and bore spring 3 and spool 5, wherein bonnet 2 adopts resin material to make, this kind material can avoid proportion electro-magnet 1 the rigid phenomenon that contacts appears when changing between electric and the dead electricity, reduce to impact, being provided with proportion electro-magnet on valve pocket top contacts with bonnet through push rod, bonnet adopts the mode of interference fit to be pressed into the upper end of spool 5, the big end of boring spring 3 that resets contacts with valve pocket 4, and small end contacts with bonnet 2 lower end surfaces; Spool 5 is ladder-type structure, the center of spool has an axial center hole, and the outer wall in the middle of spool arranges an annular groove, have two radial direction through hole orthogonal and that communicate with axial center hole at the annular groove place, first radial direction through hole is near the annular groove upper end of spool, and second radial direction through hole is near the lower end of spool annular groove, and the upper end of spool has a cylinder with large diameter section, when proportion electro-magnet was not charged, the bottom of cylinder with large diameter section contacted with valve pocket.
The working principle of present embodiment as shown in Figure 2, when proportion electro-magnet 1 when electric, spool 5 is in position shown in Figure 1, P place pressure oil is earlier via radial direction through hole, be communicated with A through axial bore again, pressure oil flows out from the A mouth through spool 5 radial direction through hole decompression back from the P mouth, and the A mouth connects the control chamber of actuator; When proportion electro-magnet 1 is not charged, can make spool 5 fixing by Returnning spring 3, inflow entrance P complete closed, A place pressure oil is communicated with T through radial direction through hole more earlier via axial bore, realizes pressure release.This device can realize the unsettled system pressure that enters from the P mouth be reduced at spool 5 outlet A places one lower, constant compression force is poor, the proportional variation of electric current of this pressure reduction and proportion electro-magnet 1.
The utility model can also have other mode of execution, and the technological scheme that the equal replacement of all employings or equivalent transformation form all drops within the claimed scope of the utility model.
Claims (4)
1. ratio three-way pressure reducing valve, comprise valve pocket and be installed in described valve pocket interior bonnet, Returnning spring and spool, being provided with proportion electro-magnet on described valve pocket top contacts with described bonnet through push rod, it is characterized in that: described bonnet adopts the mode of interference fit to be pressed into the upper end of described spool, and described Returnning spring is arranged on described bonnet bottom and contacts with described valve pocket; Described spool is ladder-type structure, the center of described spool has an axial center hole, and the outer wall in the middle of described spool arranges an annular groove, have two radial direction through hole orthogonal and that communicate with described axial center hole at described annular groove place, first radial direction through hole is near the annular groove upper end of described spool, and second radial direction through hole is near the lower end of described spool annular groove.
2. ratio three-way pressure reducing valve as claimed in claim 1 is characterized in that: described Returnning spring is the awl spring, and the big end of described awl spring contacts with described valve pocket, and small end contacts with described bonnet lower end surface.
3. ratio three-way pressure reducing valve as claimed in claim 1, it is characterized in that: the upper end of described spool has a cylinder with large diameter section, and when described proportion electro-magnet was not charged, the bottom of cylinder with large diameter section contacted with valve pocket.
4. ratio three-way pressure reducing valve as claimed in claim 1, it is characterized in that: described bonnet is made by the resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121175 CN203162295U (en) | 2013-03-15 | 2013-03-15 | Proportional three-way reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121175 CN203162295U (en) | 2013-03-15 | 2013-03-15 | Proportional three-way reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203162295U true CN203162295U (en) | 2013-08-28 |
Family
ID=49023478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320121175 Expired - Lifetime CN203162295U (en) | 2013-03-15 | 2013-03-15 | Proportional three-way reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203162295U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373403A (en) * | 2014-11-19 | 2015-02-25 | 上海立新液压有限公司 | Plugging tee-type proportional pressure reducing valve |
| CN110388508A (en) * | 2015-12-24 | 2019-10-29 | 株式会社鹭宫制作所 | Motor-driven valve |
| CN111442007A (en) * | 2020-04-07 | 2020-07-24 | 上海诺玛液压***有限公司 | Large-traffic direct action type proportion relief pressure valve |
| CN114294435A (en) * | 2021-12-14 | 2022-04-08 | 北京天玛智控科技股份有限公司 | Integral proportional pressure reducing valve |
-
2013
- 2013-03-15 CN CN 201320121175 patent/CN203162295U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373403A (en) * | 2014-11-19 | 2015-02-25 | 上海立新液压有限公司 | Plugging tee-type proportional pressure reducing valve |
| CN110388508A (en) * | 2015-12-24 | 2019-10-29 | 株式会社鹭宫制作所 | Motor-driven valve |
| CN111442007A (en) * | 2020-04-07 | 2020-07-24 | 上海诺玛液压***有限公司 | Large-traffic direct action type proportion relief pressure valve |
| CN114294435A (en) * | 2021-12-14 | 2022-04-08 | 北京天玛智控科技股份有限公司 | Integral proportional pressure reducing valve |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |