CN202017793U - Thread plug-in type two-position two-way normally-closed double check electromagnetic valve - Google Patents
Thread plug-in type two-position two-way normally-closed double check electromagnetic valve Download PDFInfo
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- CN202017793U CN202017793U CN2011201446952U CN201120144695U CN202017793U CN 202017793 U CN202017793 U CN 202017793U CN 2011201446952 U CN2011201446952 U CN 2011201446952U CN 201120144695 U CN201120144695 U CN 201120144695U CN 202017793 U CN202017793 U CN 202017793U
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- solenoid valve
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Abstract
The utility model discloses a thread plug-in type two-position two-way normally-closed double check electromagnetic valve, which comprises a valve sleeve, a magnetic shield tube, a fixed core, a moving core, a coil, a rear cover, a spool, a resetting mechanism and a front push rod, wherein the valve sleeve is provided with a first oil port which is axially formed on the front end part, and a second oil port which is radially formed in the middle; an inner cavity of the magnetic shield tube is provided with the fixed core; the front end of the fixed core is connected with the rear end of the valve sleeve, and the rear end of the fixed core is connected with the rear end part of the magnetic shield tube; the coil wraps the magnetic shield tube and the fixed core; the rear cover is arranged on the rear end part of the magnetic shield tube; the spool is movably arranged in the valve sleeve in an axial direction; and the front push rod movably penetrates the fixed core in the axial direction. Compared with the prior art, the thread plug-in type two-position two-way normally-closed double check electromagnetic valve has the advantages of simple entire structure, simple assembly, high accuracy, high reliability, long service life and small internal leakage under the rated operating pressure, so the valve is applicable to high operating pressure.
Description
Technical field
The utility model relates to a kind of pair of non-return solenoid valve, relates in particular to normally closed pair of non-return solenoid valve of a kind of thread cartridge formula bi-bit bi-pass.
Background technique
In the machinery in modern times, hydraulic system, widely applied the dual check oil hydraulic circuit, wherein dual way check valve is the crucial hydraulic element of this type systematic, the quality of dual check valve performance directly affects the performance of main frame.Existing double check valve is divided into two kinds of board-like double check valve and plug-in type dual way check valves by Placement, in order to reduce installing space, improves system reliability in system, generally adopts the plug-in type dual way check valve.Existing plug-in type safety check has the following disadvantages: at first, the electromagnet argon arc welding technique is subjected to narrow limitation, welds quality problems such as pore, weldering partially, welding stress in welding, thereby reduces working life and reliability; Secondly, structure is thin, and technology difficulty is big, and jack decentraction or mounting torque are crossed conference spool is blocked during the actual use of product, cause to the main frame reliability to have a strong impact on.In sum, the two non-return electromagnetic valve structures of existing plug-in type also can be further improved
The model utility content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, cheap normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass at the above-mentioned state of the art.
Another technical problem to be solved in the utility model provides a kind of zero leakage, long normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass of life-span.
Another technical problem to be solved in the utility model provides the fast normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass of a kind of speed of response.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass is characterized in that comprising
Valve pocket has and is positioned at second hydraulic fluid port that first hydraulic fluid port that front end axially is provided with and middle part radially are provided with;
Plunger tube, inner chamber are provided with a moving iron;
Decide iron, the rear end of front end and aforementioned valve pocket is linked and packed, the rearward end of rear end and aforementioned plunger tube is linked and packed, should decide iron hollow and have first cavity of front end and second cavity of rear end, and, the radial length of aforementioned first cavity is greater than second cavity, and aforesaid first cavity and second hydraulic fluid port keep sealing;
Coil is coated on aforementioned plunger tube and decides the iron outside;
Bonnet is located at aforementioned plunger tube rearward end;
Spool axially can be provided with in the aforesaid valve pocket movably and rearward end stretches into aforementioned first cavity of deciding iron;
Resetting-mechanism forces aforementioned spool to keep the trend that moves backward all the time; And
Before push rod, axially can run through to be located at also the active force of aforementioned moving iron can be transferred in aforementioned second cavity of decide iron on the spool and spool is moved forward movably,
Aforesaid spool is in the primary importance state, aforesaid first hydraulic fluid port and the blocking-up of second hydraulic fluid port; Aforesaid spool is in second place state, and aforesaid first hydraulic fluid port and second hydraulic fluid port communicate.
Further, described spool front end has inverted cone surface, and accordingly, the inwall of described valve pocket forms with aforementioned inverted cone surface and cooperates to block the bulge loop of first hydraulic fluid port and second hydraulic fluid port.
Described resetting-mechanism can comprise
Spring seat is located at the rearward end of described spool by a jump ring; And
Returnning spring be sheathed on the rearward end of described spool, and the ear end face of front end and aforementioned valve pocket offsets, and rear end and aforesaid spring seat offset.
Describedly decide the iron ear end face and form groove, accordingly, the front end of described moving iron has the boss that cooperates with aforementioned grooves.Design can increase the adhesive area like this, improves suction, shortens the opening time of solenoid valve; Simultaneously can design the adhesive gap again for concavo-convex, play separated magnetic effect, reduce moving iron release time, shorten the shut-in time of solenoid valve, improve the solenoid valve speed of response.
For being decides iron and valve pocket accurate positioning, described rearward end of deciding iron has internal thread, accordingly, the rearward end of described valve pocket has the spacing outer shoulder that ends of deciding iron that is used for that reaches and be positioned at outside thread front end projection with the outside thread of aforementioned internal thread threaded, and described valve pocket outside thread and outer ending have the seal groove that is provided with for seal ring between the shoulder.
Described moving iron forms axial groove milling from front to back.Reduce moving Railway transportation dynamic resistance, shorten the opening and closing time of solenoid valve, improve the solenoid valve speed of response.
Described bonnet hollow and the manual push rod that moving iron can be met an urgent need and be commutated when being provided with a coil losing electricity.The moving iron commutation of meeting an urgent need during coil losing electricity, the built-in manual push rod of bonnet hollow design drives manual push rod with suitable Allen wrench and reaches the manual reverse of direction purpose.
As preferably, described plunger tube with decide iron and bonnet all adopts argon arc welding to be welded as a whole.
Push rod is that radial cross section is a regular hexagon before described.Reducing resistance to motion, serves as preferred to adopt stainless steel material, reduces starting remanent magnetism suction.
Described poppet shaft is formed with the mesopore that can lead to oil to hollow, and tail end forms radially straight groove.Straight groove guarantees the logical oil of spool hollow, makes the suffered fluid pressure balance of spool.
Compared with prior art, advantage of the present utility model is: compared with prior art, advantage of the present utility model is: overall structure is simple, and assembling is easy to guarantee validity easily, the reliability height, and under rated working pressure, the long lifetime, internal leakage is little.Be applicable to high workload pressure, little, long lifetime of internal leakage.In integrated demanding various systems, engineering machinery and the equipment.
Description of drawings
Fig. 1 is the example structure schematic representation.
Fig. 2 is a moving iron construction schematic representation among Fig. 1.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the amplification constitutional diagram of spool and resetting-mechanism among Fig. 1.
Fig. 5 is an enlarged view of deciding iron among Fig. 1.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass comprises valve pocket 1, plunger tube 3, decides iron 2, coil (do not have among the figure and show), bonnet 4, spool 7, resetting-mechanism 8 and before push rod 6, valve pocket 1 has and is positioned at the second hydraulic fluid port 1b that the first hydraulic fluid port 1a that front end axially is provided with and middle part radially are provided with, plunger tube 3 inner chambers are provided with a moving iron 5, in conjunction with shown in Figure 3, moving iron 5 forms axial groove milling 52 from front to back, reduce moving Railway transportation dynamic resistance, shorten the opening and closing time of solenoid valve, improve the solenoid valve speed of response.Plunger tube in the present embodiment is welded as a whole by 3 first pipe fittings 31 and 32 argon arc weldings of second pipe fitting.
In conjunction with shown in Figure 5, decide the assembling that is threaded with the rear end of valve pocket 1 of iron 2 front ends, the rearward end of rear end and plunger tube 3 is linked and packed, should decide iron 2 hollows and have first cavity 21 of front end and second cavity 22 of rear end, and, the radial length of first cavity 21 keeps sealing greater than second cavity, 22, the first cavitys 21 and the second hydraulic fluid port 1b.Coil is coated on plunger tube 3 and decides iron 2 outsides, behind the coil electricity, decides iron 2 and produces magnetic field, attracts moving iron 5 to move.Bonnet 4 is located at plunger tube 3 rearward end, bonnet 4 hollows and the manual push rod 4 that moving iron 5 can be met an urgent need and be commutated when being provided with a coil losing electricity, and spacing with stop collar 41.The moving iron commutation of meeting an urgent need during coil losing electricity, the built-in manual push rod of bonnet hollow design drives manual push rod with suitable Allen wrench and reaches the manual reverse of direction purpose.
In conjunction with shown in Figure 4, spool 7 axially can be provided with in the valve pocket 1 movably and rearward end stretches into first cavity 21 of deciding iron, and spool 7 axial hollows are formed with the mesopore 72 that can lead to oil, and tail end forms radially straight groove 73.Straight groove guarantees the logical oil of spool hollow, makes the suffered fluid pressure balance of spool.
In conjunction with shown in Figure 4, resetting-mechanism 8 forces spool 7 to keep the trend that moves backward all the time, resetting-mechanism 8 comprises spring seat 82 and Returnning spring 81, spring seat 82 is located at the rearward end of spool 7 by a jump ring 83, Returnning spring 81 is sheathed on the rearward end of spool 7, and the ear end face of front end and valve pocket 1 offsets, and rear end and spring seat 82 offset.
Before push rod 6 axially can run through the active forces of being located in second cavity 22 of deciding iron and will moving iron 5 movably and be transferred on the spool 7 and spool is moved forward, preceding push rod 6 is a regular hexagon for radial cross section, reduce resistance to motion, adopt stainless steel material, reduce starting remanent magnetism suction.
Further, plunger tube 3 with decide iron 2 and bonnet 4 all adopts argon arc welding to be welded as a whole.Spool 7 front ends have inverted cone surface 71 (seeing shown in Figure 4), and the inwall of valve pocket 1 forms with inverted cone surface 71 and cooperates to block the bulge loop 12 of the first hydraulic fluid port 1a and the second hydraulic fluid port 1b.
Decide iron 2 ear end faces and form groove 23 (seeing shown in Figure 5), accordingly, the front end of moving iron 5 has the boss 51 (seeing Fig. 2 and shown in Figure 3) that cooperates with groove 23.Design can increase the adhesive area like this, improves suction, shortens the opening time of solenoid valve; Simultaneously can design the adhesive gap again for concavo-convex, play separated magnetic effect, reduce moving iron release time, shorten the shut-in time of solenoid valve, improve the solenoid valve speed of response.
The rearward end of deciding iron 2 has internal thread, accordingly, the rearward end of valve pocket 1 has the spacing outer shoulder 11 that ends of deciding iron that is used for that reaches and be positioned at outside thread front end projection with the outside thread of internal thread threaded, and valve pocket 1 outside thread and outer ending have the seal groove that is provided with for seal ring 1c between the shoulder 11.
Coil losing electricity, spool 7 are mobile backward under the effect of Returnning spring 81, contact and the first hydraulic fluid port 1a and the second hydraulic fluid port 1b are blocked until the inverted cone surface 71 of spool and bulge loop 12 sealings of valve pocket; Coil get electric after, moving iron 5 moves forward under the action of a magnetic field, and push rod 6 moves forward before driving, and then push rod 6 promotion spools 7 move forward and compression reseting spring 81 before making, bulge loop 12, the first hydraulic fluid port 1a and the second hydraulic fluid port 1b that the inverted cone surface 71 of spool breaks away from valve pocket communicate; Behind the coil losing electricity, spool 7 restores to the original state.
Claims (10)
1. normally closed pair of non-return solenoid valve of a thread cartridge formula bi-bit bi-pass is characterized in that comprising
Valve pocket has and is positioned at second hydraulic fluid port that first hydraulic fluid port that front end axially is provided with and middle part radially are provided with;
Plunger tube, inner chamber are provided with a moving iron;
Decide iron, the rear end of front end and aforementioned valve pocket is linked and packed, the rearward end of rear end and aforementioned plunger tube is linked and packed, should decide iron hollow and have first cavity of front end and second cavity of rear end, and, the radial length of aforementioned first cavity is greater than second cavity, and aforesaid first cavity and second hydraulic fluid port keep sealing;
Coil is coated on aforementioned plunger tube and decides the iron outside;
Bonnet is located at aforementioned plunger tube rearward end;
Spool axially can be provided with in the aforesaid valve pocket movably and rearward end stretches into aforementioned first cavity of deciding iron;
Resetting-mechanism forces aforementioned spool to keep the trend that moves backward all the time; And
Before push rod, axially can run through to be located at also the active force of aforementioned moving iron can be transferred in aforementioned second cavity of decide iron on the spool and spool is moved forward movably,
Aforesaid spool is in the primary importance state, aforesaid first hydraulic fluid port and the blocking-up of second hydraulic fluid port; Aforesaid spool is in second place state, and aforesaid first hydraulic fluid port and second hydraulic fluid port communicate.
2. according to normally closed pair of non-return solenoid valve of the described thread cartridge formula of claim 1 bi-bit bi-pass, it is characterized in that described spool front end has inverted cone surface, accordingly, the inwall of described valve pocket forms with aforementioned inverted cone surface and cooperates to block the bulge loop of first hydraulic fluid port and second hydraulic fluid port.
3. according to normally closed pair of non-return solenoid valve of the described thread cartridge formula of claim 1 bi-bit bi-pass, it is characterized in that described resetting-mechanism comprises
Spring seat is located at the rearward end of described spool by a jump ring; And
Returnning spring be sheathed on the rearward end of described spool, and the ear end face of front end and aforementioned valve pocket offsets, and rear end and aforesaid spring seat offset.
4. according to normally closed pair of non-return solenoid valve of the described thread cartridge formula of claim 1 bi-bit bi-pass, it is characterized in that describedly deciding the iron ear end face and forming groove, accordingly, the front end of described moving iron has the boss that cooperates with aforementioned grooves.
5. according to normally closed pair of non-return solenoid valve of the described thread cartridge formula of claim 1 bi-bit bi-pass, it is characterized in that described rearward end of deciding iron has internal thread, accordingly, the rearward end of described valve pocket has the spacing outer shoulder that ends of deciding iron that is used for that reaches and be positioned at outside thread front end projection with the outside thread of aforementioned internal thread threaded, and described valve pocket outside thread and outer ending have the seal groove that is provided with for seal ring between the shoulder.
6. according to normally closed pair of non-return solenoid valve of the described thread cartridge formula of claim 1 bi-bit bi-pass, it is characterized in that described moving iron forms axial groove milling from front to back.
7. normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass according to claim 1, the manual push rod that moving iron can be met an urgent need and be commutated when it is characterized in that described bonnet hollow and being provided with a coil losing electricity.
8. normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass according to claim 1 is characterized in that described plunger tube and decides iron and bonnet all adopts argon arc welding to be welded as a whole.
9. normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass according to claim 1 is characterized in that described preceding push rod is that radial cross section is a regular hexagon.
10. normally closed pair of non-return solenoid valve of thread cartridge formula bi-bit bi-pass according to claim 1 it is characterized in that described poppet shaft is formed with the mesopore that can lead to oil to hollow, and tail end forms radially straight groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201446952U CN202017793U (en) | 2011-05-03 | 2011-05-03 | Thread plug-in type two-position two-way normally-closed double check electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201446952U CN202017793U (en) | 2011-05-03 | 2011-05-03 | Thread plug-in type two-position two-way normally-closed double check electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202017793U true CN202017793U (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201446952U Expired - Lifetime CN202017793U (en) | 2011-05-03 | 2011-05-03 | Thread plug-in type two-position two-way normally-closed double check electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202017793U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115031A (en) * | 2013-02-26 | 2013-05-22 | 宁波海宏液压有限公司 | Two-way ball check valve |
| CN103256267A (en) * | 2013-04-28 | 2013-08-21 | 潍坊威度电子科技有限公司 | Hydraulic high-flow and high-speed digital valve |
| CN105298965A (en) * | 2015-11-16 | 2016-02-03 | 宁波克泰液压有限公司 | Gear shifting electromagnetic valve of automatic transmission |
| CN105757299A (en) * | 2016-04-29 | 2016-07-13 | 绵阳富临精工机械股份有限公司 | One-way-valve-structure-integrated electromagnetic valve |
| CN109253269A (en) * | 2018-10-24 | 2019-01-22 | 湖南凯恩利液压机械制造有限公司 | A kind of solenoid valve for water and mechanical equipment |
-
2011
- 2011-05-03 CN CN2011201446952U patent/CN202017793U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115031A (en) * | 2013-02-26 | 2013-05-22 | 宁波海宏液压有限公司 | Two-way ball check valve |
| CN103256267A (en) * | 2013-04-28 | 2013-08-21 | 潍坊威度电子科技有限公司 | Hydraulic high-flow and high-speed digital valve |
| CN105298965A (en) * | 2015-11-16 | 2016-02-03 | 宁波克泰液压有限公司 | Gear shifting electromagnetic valve of automatic transmission |
| CN105298965B (en) * | 2015-11-16 | 2017-07-25 | 宁波克泰液压有限公司 | Automatic transmission gear shift magnetic valve |
| CN105757299A (en) * | 2016-04-29 | 2016-07-13 | 绵阳富临精工机械股份有限公司 | One-way-valve-structure-integrated electromagnetic valve |
| CN105757299B (en) * | 2016-04-29 | 2018-04-03 | 绵阳富临精工机械股份有限公司 | A kind of magnetic valve of integrated check valve structure |
| CN109253269A (en) * | 2018-10-24 | 2019-01-22 | 湖南凯恩利液压机械制造有限公司 | A kind of solenoid valve for water and mechanical equipment |
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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: 20111026 |