CN219529432U - Pilot-controlled two-way thread plug-in electromagnetic valve - Google Patents
Pilot-controlled two-way thread plug-in electromagnetic valve Download PDFInfo
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- CN219529432U CN219529432U CN202320007298.3U CN202320007298U CN219529432U CN 219529432 U CN219529432 U CN 219529432U CN 202320007298 U CN202320007298 U CN 202320007298U CN 219529432 U CN219529432 U CN 219529432U
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Abstract
The utility model discloses a pilot-controlled two-way thread plug-in electromagnetic valve, which comprises a valve sleeve, a main valve core, a pilot valve core and an electromagnet, wherein the main valve core is arranged in a main valve hole of the valve sleeve, the electromagnet is arranged in the valve sleeve, and the pilot valve core is arranged in an inner hole of the electromagnet through the mutual matching of a spring seat and a spring; one end of the spring seat is propped against the inner hole step of the valve sleeve, and the other end of the spring seat is propped against the end face of the electromagnet; the spring is arranged between the spring seat and the shaft shoulder of the guide valve core, and the compression force of the spring enables the guide cone of the guide valve core to be separated from the valve seat when the electromagnet is not electrified. The pilot control two-way thread plug-in solenoid valve based on the scheme can realize two-stage control of the pilot valve and the main valve, is sealed by a cone, has large through flow and is free from leakage.
Description
Technical Field
The utility model relates to a hydraulic valve, in particular to a two-way thread plug-in electromagnetic valve technology.
Background
In a hydraulic system, an electromagnetic valve and an electromagnetic valve inserted by threads are frequently used, so that the structure is compact and the installation is convenient.
However, the existing electromagnetic valve is directly pushed by an electromagnet and limited by the thrust of the electromagnet, the through flow is small, and for a two-way valve, oil can only circulate and stop in one direction and the use of the two-way valve for requiring oil can be limited.
Disclosure of Invention
Aiming at the problems of the electromagnetic valve for the existing hydraulic system, the utility model aims to provide the pilot-controlled two-way thread plug-in electromagnetic valve which does not need to directly push a main valve core and has good energy-saving effect.
In order to achieve the purpose, the pilot-controlled two-way thread plug-in electromagnetic valve comprises a valve sleeve, a main valve core, a pilot valve core and an electromagnet, wherein the main valve core is arranged in a main valve hole of the valve sleeve, the electromagnet is arranged in the valve sleeve, and the pilot valve core is arranged in an inner hole of the electromagnet in a way that a spring seat is matched with a spring; one end of the spring seat is propped against the inner hole step of the valve sleeve, and the other end of the spring seat is propped against the end face of the electromagnet; the spring is arranged between the spring seat and the shaft shoulder of the guide valve core, and the compression force of the spring enables the guide cone of the guide valve core to be separated from the valve seat when the electromagnet is not electrified.
Further, the valve sleeve is provided with a first oil port, a main valve hole and internal threads along a central line, a plurality of second oil ports and a plurality of first radial holes which are radially distributed; a first through flow groove and a first sealing groove are formed in the outer part of one end of the valve sleeve, and a first sealing ring is arranged in the first sealing groove so as to form a seal between the first oil port and the second oil port; the first through flow groove forms a circular ring between the inside of the mounting hole of the whole valve and the hole wall, so that the main valve hole and the first radial hole can be communicated; the outer part of the other end of the valve sleeve is provided with a second sealing groove, a first external thread and an external hexagon; the second sealing groove is internally provided with a second sealing ring.
Further, the first sealing ring is composed of 1O-shaped ring and 1 check ring on two sides, and each check ring is used for preventing the O-shaped ring from being extruded to the low pressure side to be damaged after being subjected to high pressure.
Further, a first check ring groove, a first step hole, a central hole and a valve seat hole are distributed in the axial center of the main valve shaft; the main valve shaft is provided with a main cone, a through flow step, a second through flow groove, a second step hole, a second radial hole, a second damping hole, a third radial hole, a third sealing groove and an extension shaft at the outer part in the axial direction; the main valve shaft is provided with a third step hole, a first axial hole, a first damping hole, a second axial hole and a fourth step hole in the axial eccentric center;
the second radial hole is communicated with the central hole in an intersecting way, and the second damping hole is communicated with the second axial hole in an intersecting way; a first steel ball is arranged in the first step hole,
the first check ring groove is provided with a special-shaped steel wire check ring to prevent the first steel ball from falling off and falling off;
the valve seat hole is matched with the guide cone of the guide valve core to form a hard seal; a second steel ball is arranged in the second step hole; a third steel ball is arranged in the third step hole; a fourth steel ball is arranged in the fourth step hole;
the through-flow step ensures that a sufficient through-flow area can be formed between the first oil port and the second oil port when the main valve core is opened; the second through flow groove ensures that the second step hole and the third radial hole can be always communicated with the first radial hole;
and a sealing ring is arranged in the third sealing groove, an inner hole of the limiting retainer ring is arranged on the extension shaft to limit the positions of the third steel ball and the fourth steel ball, and a second retainer ring groove and a steel wire retainer ring are arranged on the extension shaft.
Further, the movable sealing ring consists of two O-shaped rings and an arc-shaped ring, the bottom surfaces of the O-shaped rings and the third sealing groove are static sealing and have no leakage, the inner rings of the O-shaped rings and the arc-shaped ring are static sealing and have no leakage, and the outer ring of the arc-shaped ring is arc-shaped.
Further, an intersection angle is formed between the first oil port of the valve sleeve and the bottom surface of the main valve hole, and when the intersection angle is contacted with the main cone body, a hard seal is formed, so that the first oil port and the second oil port are mutually isolated and have no leakage.
Compared with the prior art, the pilot-controlled two-way thread plug-in electromagnetic valve provided by the utility model has the following advantages:
(1) The scheme is divided into two stages of control of the pilot valve and the main valve, and the pilot valve and the main valve are both in cone sealing, so that the flow is large, and leakage does not exist.
(2) In the scheme, the electromagnet only needs to overcome the spring force without directly pushing the main valve core, so that the required thrust is smaller, namely the required power is smaller, and the energy-saving effect is obvious.
(3) In the scheme, oil can flow in two directions and is cut off in two directions.
Drawings
The utility model is further described below with reference to the drawings and the detailed description.
Fig. 1 is a diagram showing an example of the constitution of a pilot-controlled two-way thread cartridge solenoid valve given in this example;
FIG. 2 is a cross-sectional view taken along the direction A-A of FIG. 1;
fig. 3 is a structural example diagram of the wire-shaped retainer ring in this example.
Reference numerals in the drawings:
100. valve housing 101, first oil port 102, second oil port 103, main valve hole
104. First through-flow groove 105, first radial hole 106, first seal groove 107, second seal groove 108, internal thread 109, first external thread 110, outer hexagon 161, first seal ring 162, second seal ring
200. The main valve core 201, the first check ring groove 202, the first step hole 203, the second step hole 204, the third seal groove 205, the third step hole 206, the second check ring groove 207 and the main cone
208. Second radial bore 209, central bore 210, valve seat bore 211, first axial bore 212, first damping bore 213, second damping bore 214, third radial bore 215, second axial bore 216, fourth stepped bore 217, through-flow step 218, second through-flow slot 221, and extension shaft
231. Profiled steel wire retainer 232, steel wire retainer 241, first steel ball 242, second steel ball
243. Third steel ball 244, fourth steel ball 251, limit retainer ring 260 and movable sealing ring
300. Guide valve core 301, guide cone 410, spring seat 420, spring
500. Electromagnet 501, third seal groove 502, second external thread 510, push rod
561. And (3) third sealing.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
Referring to fig. 1 and 2, the pilot-controlled two-way threaded cartridge solenoid valve provided in this example is mainly composed of a valve housing 100, a main valve core 200, a pilot valve core 300, and an electromagnet 500, which are mutually matched.
Specifically, the valve sleeve 100 in this example has a first port 101, a main valve bore 103, and internal threads 108 distributed along the centerline, and has 5 radially distributed second ports 102 and 4 first radial bores 105.
The present example has a first flow channel 104 and a first seal channel 106 on the right exterior of the valve housing 100, where the right is defined in the illustrated orientation. The present example further houses a first seal ring 161 within the first seal groove 106 for sealing between the first port 101 and the second port 102. For oil can flow from the first oil port 101 and the second oil port 102 in two directions, the first sealing ring 161 in the embodiment is formed by matching 1O-shaped ring and 1 check ring on two sides, and each check ring is used for preventing the O-shaped ring from being extruded and damaged to the low pressure side after being subjected to high pressure.
The first through-flow groove 104 forms a circular ring between the inside of the installation hole of the whole valve and the hole wall, so that the main valve hole 103 and the first radial hole 105 can be communicated.
The present example has a second seal groove 107, a first external thread 109, and an external hex 110 on the left exterior of the valve sleeve 100, where the left is defined in the illustrated orientation.
The second sealing groove 107 is internally provided with a second sealing ring 162 for preventing the whole valve from leaking outwards after installation, the first external thread 109 is used for the threaded connection of the whole valve and the installation screw hole, and the outer hexagon 110 can be matched with a hexagonal wrench tool for the installation or the disassembly of the whole valve.
The main valve core 200 in this example is installed in the main valve bore 103 of the valve housing 100, and a first retainer groove 201, a first step hole 202, a center hole 209, and a valve seat hole 210 are axially distributed in the center.
The main valve element 200 is axially and externally provided with a main cone 207, a through-flow step 217, a second through-flow groove 218, a second step hole 203, a second radial hole 208, a second damping hole 213, a third radial hole 214, a third seal groove 204, and an extension shaft 221.
The main valve core 200 is axially offset and provided with a third stepped hole 205, a first axial hole 211, a first damping hole 212, a second axial hole 215 and a fourth stepped hole 216.
Further, the second radial hole 208 is in intersecting communication with the central hole 209, and the second damping hole 213 is in intersecting communication with the second axial hole 215. First steel ball 241 is installed in first stepped hole 202, when pressure oil exists on the right side of the main valve core, steel ball 241 can be pressed on the conical surface of the inner side of first stepped hole 202, and pressure oil is prevented from entering central hole 209.
The first retainer groove 201 accommodates the profiled wire retainer 231 to prevent the first steel ball 241 from falling out to the right. Referring to fig. 3, the wire-shaped retainer ring 231 used in the present example has an inverted "G" shape as a whole.
The valve seat bore 210 mates with the pilot cone 301 of the pilot valve core 300 to form a hard seal.
The second steel ball 242 is installed in the second step hole 203, when the pressure oil exists in the second through-flow groove 218 of the main valve core, the steel ball 242 can be pressed on the conical surface of the inner side of the second step hole 203, and the pressure oil is prevented from entering the central hole 209. The third stepped hole 205 is internally provided with a third steel ball 243, when pressure oil exists on the left side of the main valve core, the steel ball 243 is pressed on the conical surface on the inner side of the third stepped hole 205, and the pressure oil is prevented from entering the first damping hole 212 and the first axial hole 211.
Fourth stepped bore 216 houses fourth steel ball 244, which presses steel ball 244 against the tapered surface inside fourth stepped bore 216 when pressurized oil is present on the left side of the main spool, blocking pressurized oil from entering second axial bore 215.
The first port 101 of the valve housing forms an intersection with the bottom surface of the main valve bore 103, which forms a hard seal when in contact with the main cone 207, such that the first port 101 and the second port 102 are isolated from each other and are leak-free.
The through-flow step 217 is an annular gap between the large outer circle and the small outer circle of the main valve core, so that a sufficient through-flow area between the first oil port 101 and the second oil port 102 can be ensured when the main valve core is opened.
The second through-flow groove 218 is an annular groove on the outer circle of the main valve core, and ensures that the second step hole 203 and the third radial hole 214 can be always communicated with the first radial hole 105.
The sealing ring 260 is arranged in the third sealing groove 204, the sealing ring consists of two O-shaped rings and an arc-shaped ring, the O-shaped rings and the bottom surface of the third sealing groove 204 are static sealing and have no leakage, the O-shaped rings and the inner ring of the arc-shaped ring are static sealing and have no leakage, the outer ring of the arc-shaped ring is arc-shaped, the contact surface between the outer ring and the hole wall of the main valve hole of the valve sleeve is small, the material characteristic of the arc-shaped ring is small in friction force and good in wear resistance, and therefore the moving resistance of the main valve core in the main valve hole is small and the service life is long.
The inner holes of the limit retainer 251 are arranged on the extension shaft 221 and are used for limiting the positions of the third steel ball 243 and the fourth steel ball 244 so as to ensure that the third steel ball 243 and the fourth steel ball 244 cannot deviate from the step holes where the third steel ball 243 and the fourth steel ball 244 are arranged. The extension shaft 221 has a second retainer groove 206, and a wire retainer 232 is installed in the second retainer groove to prevent the limit retainer 251 from being separated from the extension shaft 221.
The pilot valve core 300 in this example is seated in the bore of the electromagnet 500 by a spring assembly of a spring seat 410 and a spring 420.
Wherein the spring seat 410 is right against the inner hole step of the valve sleeve 100 and left against the end face of the electromagnet 500. The spring 420 is installed between the spring seat 410 and the shoulder of the pilot valve core 300, when the electromagnet is not electrified, the compression force of the spring makes the guide cone 301 of the pilot valve core 300 separate from the valve seat hole 210, and when the electromagnet 500 is electrified, the push rod 510 inside the electromagnet pushes the pilot valve core to move against the spring force, so that the guide cone 301 is attached to the valve seat hole 210 to form a hard seal.
The electromagnet 500 in this example is mounted in the valve housing 100 by its second external threads 502 mating with the internal threads 108 of the valve housing.
The outer circle of the right end of the electromagnet 500 is provided with a third sealing groove 501, a third sealing ring 561 is arranged in the outer circle, hydraulic oil in a containing cavity formed by the valve sleeve and the electromagnet is prevented from leaking, the third sealing ring 561 is formed by 1O-shaped ring and 1 check ring, and the check ring is used for preventing the O-shaped ring from being pressed and extruded to be damaged.
The pilot control two-way thread plug-in solenoid valve based on the scheme can realize two-stage control of the pilot valve and the main valve, is sealed by a cone, has large through flow and is free from leakage.
Moreover, when the electromagnetic valve is applied, oil liquid can flow in two directions and can be cut off in two directions. And the electromagnet only needs to overcome the spring force and does not need to directly push the main valve core, so that the required thrust is smaller, namely the required power is smaller, and the energy-saving effect is obvious.
The functional characteristics of the pilot-controlled two-way thread cartridge solenoid valve are described below by specific application examples.
1. The electromagnet is in a power-off state, and hydraulic oil can bidirectionally circulate
In this state, the pilot valve body 300 in the pilot-controlled two-way thread cartridge solenoid valve is under the compression force of the spring 420, and the pilot cone 301 is separated from the valve seat hole 210.
1. The first oil port 101 is filled with oil, the pressure of hydraulic oil acts on the corresponding area of the first oil port at the right end of the main valve core 200, the first steel ball 241 is attached to the conical surface inside the first step hole 202 under the pressure, hydraulic oil cannot enter the central hole 209 from the first axial hole 211, the hydraulic oil passes through the first damping hole 212 to jack the third steel ball 243, the third steel ball enters the third step hole 205, and then enters the left side of the main valve core 200, and the third steel ball 243 is blocked by the limiting retainer ring 251 and cannot fall from the third step hole 205.
The hydraulic oil entering the left side of the main valve core 200 presses the fourth steel ball 244 on the conical surface in the fourth stepped hole 216, the hydraulic oil cannot enter the second axial hole 215, but passes through the valve seat hole 210 and the central hole 209, reaches the second radial hole 208, pushes away the second steel ball 242, reaches the second stepped hole 203, the second through-flow groove 218, the first radial hole 105 and the first through-flow groove 104, so that a flowing pilot control oil is formed, the flowing control oil forms a pressure difference at two ends of the first damping hole 212, that is, the pressure on the right side of the main valve core 200 is greater than the left side pressure, so that the main valve core 200 is pushed to move leftwards, the intersection angle of the main conical body 207 and the bottom surface of the main valve hole 103 is separated from contact, and the hydraulic oil of the first oil port 101 reaches the second oil port 102 through the through-flow step 217, that is, and the hydraulic oil flows from the first oil port to the second oil port. The wall of the main valve hole 103 below the second ball 242 is blocked, so that the second ball cannot fall off the second stepped hole 203.
2. The second oil port 102 is filled with oil, the pressure of the hydraulic oil acts on the annular area of the right end face of the main valve core 200, the area of the first oil port is removed, the second steel ball 242 is attached to the conical surface inside the second stepped hole 203 under the pressure, the hydraulic oil cannot enter the second radial hole 208 and the central hole 209 from the second radial hole 214, the hydraulic oil passes through the second damping hole 213 and the second axial hole 215 to jack the fourth steel ball 244 to the fourth stepped hole 216, and then the left side of the main valve core 200, and the fourth steel ball 244 is blocked by the limiting retainer ring 251 and cannot fall from the fourth stepped hole 216.
The hydraulic oil entering the left side of the main valve core 200 presses the third steel ball 243 on the conical surface in the third stepped hole 205, the hydraulic oil cannot enter the first axial hole 211, but pushes away the first steel ball 241 through the valve seat hole 210 and the central hole 209, and reaches the first stepped hole 202 and the first oil port 101, so that one-way flowing pilot control oil is formed, the flowing control oil forms a pressure difference at two ends of the second damping hole 213, namely the pressure of the right annular area of the main valve core 200 is larger than the left side pressure, so that the main valve core 200 is pushed to move leftwards, the main cone 207 is separated from contact with the intersection angle of the bottom surface of the main valve hole 103, and the hydraulic oil of the second oil port 102 reaches the first oil port 101 through the through-flow step 217, namely the hydraulic oil flows from the second oil port to the first oil port. The right side of the first steel ball 241 is blocked by the special-shaped steel wire retainer ring 231, so that the first steel ball cannot fall off the first step hole 202.
2. The electromagnet is in a power-on state, and hydraulic oil is blocked in two directions
In this state, the push rod 510 in the electromagnet 500 in the pilot-controlled two-way thread cartridge solenoid valve pushes the pilot valve body 300 to move rightward against the compression force of the spring 420, and the pilot cone 301 seals the seat hole 210. The electromagnet only needs to overcome the spring force and does not need to directly push the main valve core, so that the required thrust is smaller, namely the required power is smaller, and the energy-saving effect is obvious.
1. The first oil port 101 is used for oil feeding, the pressure of hydraulic oil acts on the corresponding area of the first oil port at the right end of the main valve core 200, the hydraulic oil enters from the first axial hole 211, passes through the first damping hole 212, pushes up the third steel ball 243, reaches the third step hole 205, and then reaches the left side of the main valve core 200, and the third steel ball 243 is blocked by the limiting retainer ring 251 and cannot fall from the third step hole 205.
The hydraulic oil entering the left side of the main valve 200, the pressure of which presses the fourth steel ball 244 against the conical surface inside the fourth stepped hole 216, cannot enter the second axial hole 215, and the seat hole 210 is closed by the guide cone 301, and the hydraulic oil cannot enter the central hole 209, so that the hydraulic oil does not flow, and therefore, there is no pressure difference at the two ends of the first damping hole 212, that is, the pressures at the two sides of the main valve 200 are the same, but the left area is larger than the corresponding area of the first oil port 101 at the right side, the left thrust is larger than the right thrust, the main cone 207 of the main valve 200 is tightly pressed against the intersection angle of the bottom surface of the main valve 103 to form a leak-free hard seal, and the hydraulic oil of the first oil port 101 cannot flow to the second oil port 102 from there. In addition, due to the action of the first seal ring 161 and the movable seal ring 260, the hydraulic oil of the first oil port 101 cannot flow from the outer circle of the valve housing, and the fit clearance between the main valve bore 103 and the main valve spool 200 flows to the second oil port 102, that is, the hydraulic oil of the first oil port 101 flowing to the second oil port 102 is blocked without leakage.
2. The second oil port 102 is filled with oil, the pressure of hydraulic oil acts on the annular area of the right end face of the main valve core 200 except for the area of the first oil port, and the hydraulic oil enters from the first through-flow groove 104, the first radial hole 105, the second through-flow groove 218, the third radial hole 214, the second damping hole 213 and the second axial hole 215, and pushes up the fourth steel ball 244, so that the hydraulic oil reaches the fourth stepped hole 216 and then reaches the left side of the main valve core 200, and the fourth steel ball 244 is blocked by the limiting retainer ring 251 and cannot fall from the fourth stepped hole 216.
The hydraulic oil entering the left side of the main valve 200, the pressure of which presses the third steel ball 243 against the conical surface inside the third stepped hole 205, cannot enter the first axial hole 211, and the seat hole 210 is closed by the guide cone 301, and the hydraulic oil cannot enter the central hole 209, so that the hydraulic oil does not flow, and therefore, there is no pressure difference at both ends of the second damping hole 213, that is, the pressures at both sides of the main valve 200 are the same, but the left area is larger than the right annular area, the left thrust is larger than the right thrust, the main cone 207 of the main valve 200 is tightly pressed against the intersection angle of the bottom surface of the main valve 103 to form a leak-free hard seal, and the hydraulic oil of the second oil port 102 cannot flow to the first oil port 101 from there. In addition, due to the action of the first seal ring 161 and the movable seal ring 260, the hydraulic oil of the second port 102 cannot flow from the outer circumference of the valve housing, and the fit clearance between the main valve bore 103 and the main valve spool 200 flows to the first port 101, i.e., the hydraulic oil of the second port 102 flowing to the first port 101 is blocked without leakage.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The pilot-controlled two-way thread plug-in electromagnetic valve is characterized by comprising a valve sleeve, a main valve core, a pilot valve core and an electromagnet, wherein the main valve core is arranged in a main valve hole of the valve sleeve, the electromagnet is arranged in the valve sleeve, and the pilot valve core is arranged in an inner hole of the electromagnet in a way of mutually matching a spring seat and a spring; one end of the spring seat is propped against the inner hole step of the valve sleeve, and the other end of the spring seat is propped against the end face of the electromagnet; the spring is arranged between the spring seat and the shaft shoulder of the guide valve core, and the compression force of the spring enables the guide cone of the guide valve core to be separated from the valve seat when the electromagnet is not electrified.
2. The pilot-controlled two-way threaded cartridge solenoid valve of claim 1 wherein the valve sleeve has a first port, a main valve bore, and internal threads distributed along a centerline, a plurality of radially-distributed second ports, and a plurality of first radial bores; a first through flow groove and a first sealing groove are formed in the outer part of one end of the valve sleeve, and a first sealing ring is arranged in the first sealing groove so as to form a seal between the first oil port and the second oil port; the first through flow groove forms a circular ring between the inside of the mounting hole of the whole valve and the hole wall, so that the main valve hole and the first radial hole can be communicated; the outer part of the other end of the valve sleeve is provided with a second sealing groove, a first external thread and an external hexagon; the second sealing groove is internally provided with a second sealing ring.
3. The pilot-controlled two-way thread cartridge solenoid valve of claim 2, wherein the first seal ring is composed of 1O-ring and 1 retainer ring on each side, each retainer ring being configured to prevent extrusion damage of the O-ring to the low pressure side after the O-ring is subjected to high pressure.
4. The pilot-controlled two-way threaded cartridge solenoid valve of claim 2, wherein the main valve shaft has a first retainer groove, a first stepped bore, a central bore, a valve seat bore distributed in a central axial direction; the main valve shaft is provided with a main cone, a through flow step, a second through flow groove, a second step hole, a second radial hole, a second damping hole, a third radial hole, a third sealing groove and an extension shaft at the outer part in the axial direction; the main valve shaft is provided with a third step hole, a first axial hole, a first damping hole, a second axial hole and a fourth step hole in the axial eccentric center;
the second radial hole is communicated with the central hole in an intersecting way, and the second damping hole is communicated with the second axial hole in an intersecting way; a first steel ball is arranged in the first step hole,
the first check ring groove is provided with a special-shaped steel wire check ring to prevent the first steel ball from falling off and falling off;
the valve seat hole is matched with the guide cone of the guide valve core to form a hard seal; a second steel ball is arranged in the second step hole; a third steel ball is arranged in the third step hole; a fourth steel ball is arranged in the fourth step hole;
the through-flow step ensures that a sufficient through-flow area can be formed between the first oil port and the second oil port when the main valve core is opened; the second through flow groove ensures that the second step hole and the third radial hole can be always communicated with the first radial hole;
the third sealing groove is internally provided with a sealing ring, the extension shaft is provided with a limiting check ring for limiting the positions of the third steel ball and the fourth steel ball, and the extension shaft is provided with a second check ring groove in which a steel wire check ring is arranged.
5. The pilot-controlled two-way threaded cartridge solenoid valve of claim 4 wherein the movable seal ring comprises two O-rings and an arcuate ring, the O-rings and the third seal groove bottom surfaces are static seals and no leakage, the O-rings and the inner ring of the arcuate ring are also static seals and no leakage, and the outer ring of the arcuate ring is circular arc.
6. The pilot-controlled two-way threaded solenoid valve of claim 4, wherein the first port of the valve sleeve forms an intersection with the bottom surface of the main valve bore that forms a hard seal when in contact with the main cone such that the first port and the second port are isolated from each other and do not leak.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320007298.3U CN219529432U (en) | 2023-01-03 | 2023-01-03 | Pilot-controlled two-way thread plug-in electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320007298.3U CN219529432U (en) | 2023-01-03 | 2023-01-03 | Pilot-controlled two-way thread plug-in electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219529432U true CN219529432U (en) | 2023-08-15 |
Family
ID=87628998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320007298.3U Active CN219529432U (en) | 2023-01-03 | 2023-01-03 | Pilot-controlled two-way thread plug-in electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219529432U (en) |
-
2023
- 2023-01-03 CN CN202320007298.3U patent/CN219529432U/en active Active
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