CN109185253B - Electromagnetic overflow valve - Google Patents
Electromagnetic overflow valve Download PDFInfo
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- CN109185253B CN109185253B CN201811231979.8A CN201811231979A CN109185253B CN 109185253 B CN109185253 B CN 109185253B CN 201811231979 A CN201811231979 A CN 201811231979A CN 109185253 B CN109185253 B CN 109185253B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Chemical & Material Sciences (AREA)
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides an electromagnetic overflow valve, comprising: the reversing valve comprises a valve body, a pilot valve seat, a main valve core, a main spring, a connecting body, a pilot valve core, a pilot spring, a reversing valve body, a magnetic conduction pipe, a push rod, a coil, a reversing valve core and a reversing spring. According to the electromagnetic overflow valve disclosed by the embodiment of the invention, the unloading function and the overflow function are integrated, the volume is compact, the structure is simple and reasonable, and the manufacturing cost is low.
Description
Technical Field
The invention relates to a valve, in particular to an electromagnetic overflow valve.
Background
The electromagnetic overflow valve is a hydraulic element widely applied to a hydraulic system and is used for unloading the system and limiting the pressure of the system. The existing electromagnetic overflow valve, such as a DBW type electromagnetic overflow valve produced by German Lishi le hydraulic company, is of a plate type structure, takes a six-path electromagnetic directional valve as an unloading guide valve, has the advantages of large volume, heavy weight, more parts and high production cost, and is not suitable for being applied to occasions with higher requirements on integration level, such as small-sized walking mechanical equipment and the like.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention aims to provide an electromagnetic overflow valve which is compact in size, simple to machine and low in manufacturing cost.
An electromagnetic spill valve according to an embodiment of the present invention includes:
the valve body is provided with a valve body through hole which is communicated up and down, the valve body through hole comprises a first valve body through hole section, a second valve body through hole section, a third valve body through hole section and a fourth valve body through hole section from top to bottom, the aperture of the first valve body through hole section is larger than that of the second valve body through hole section, the aperture of the third valve body through hole section is between the aperture of the first valve body through hole section and that of the second valve body through hole section, the aperture of the fourth valve body through hole section is smaller than that of the second valve body through hole section, a first oil port is formed in the lower opening of the valve body through hole, and the valve body is provided with a second oil port which is communicated with the side wall of the third valve body through hole section;
the lower end of the pilot valve seat is fixedly matched in the upper end of the first valve body through hole section, the pilot valve seat is provided with a pilot valve seat blind hole with an upward opening, the valve body is provided with a first through hole penetrating through the side wall of the first valve body through hole section, the pilot valve seat is provided with a second through hole penetrating through the side wall of the pilot valve seat blind hole and communicated with the first through hole, and the pilot valve seat is provided with a third through hole communicating the bottom surface of the pilot valve seat blind hole with the lower end surface of the pilot valve seat;
the main valve core is arranged in the through hole section of the second valve body in a vertically sliding manner, a damping hole which is communicated up and down is formed in the main valve core, and a first control cavity is defined between the upper end face of the main valve core and the lower end face of the pilot valve seat in the through hole of the valve body;
the main spring is arranged in the valve body through hole and located between the pilot valve seat and the main valve core, the upper end of the main spring abuts against the pilot valve seat, the lower end of the main spring abuts against the main valve core, and the main spring normally pushes the main valve core downwards so that the lower end face of the main valve core normally seals the upper step face of the fourth valve body through hole section;
the lower end of the connecting body is fixedly matched in the upper end of the pilot valve seat blind hole, the connecting body is provided with a connecting body through hole which is communicated up and down, the connecting body through hole comprises a first connecting body through hole section, a second connecting body through hole section, a third connecting body through hole section and a fourth connecting body through hole section from top to bottom, the aperture of the first connecting body through hole section is larger than that of the second connecting body through hole section, the aperture of the second connecting body through hole section is larger than that of the third connecting body through hole section, and the aperture of the fourth connecting body through hole section is between that of the second connecting body through hole section and that of the third connecting body through hole section;
the pilot valve core comprises a pilot valve core main body section with the outer diameter smaller than the aperture of the third connector through hole section and a pilot valve core diameter expansion section positioned below the pilot valve core main body section, the pilot valve core diameter expansion hole is formed in the pilot valve base blind hole, the upper end of the pilot valve core main body section penetrates through the third connector through hole section, the pilot valve core is provided with a first flow channel which is communicated up and down, the lower end of the first flow channel is constructed into a damping hole section with the aperture smaller than the aperture of the third through hole, and the pilot valve core is provided with a fourth through hole which is communicated with the side wall of the first flow channel and positioned above the upper step of the third connector through hole section;
the lower end of the pilot spring abuts against the upper end face of the pilot valve core diameter expansion section, the upper end of the pilot spring abuts against the upper step face of the fourth connector through hole section, the pilot spring normally pushes the pilot valve core downwards so that the lower end face of the pilot valve core normally seals the upper opening of the third through hole, and at the moment, the lower edge of the fourth through hole is adjacent to the upper step face of the third connector through hole section;
the reversing valve body comprises a reversing valve body upper section fixedly matched with the first connecting body through hole section and a reversing valve body lower section matched in the second connecting body through hole section, the lower end surface of the reversing valve body lower section is positioned above the fourth through hole, the reversing valve body is provided with a reversing valve body through hole which is through up and down, and the reversing valve body through hole comprises a first reversing valve body through hole section and a second reversing valve body through hole section, the hole diameters of which are sequentially reduced from top to bottom;
the lower end of the magnetic conduction pipe is fixedly matched in the first reversing valve body through hole section, and the magnetic conduction pipe is provided with a magnetic conduction pipe blind hole with a downward opening;
the push rod is arranged on the magnetic conduction pipe, and the push rod can be switched between a first position where the lower end of the push rod is flush with the bottom surface of the blind hole of the magnetic conduction pipe and a second position where the lower end of the push rod extends downwards into the blind hole of the magnetic conduction pipe;
the coil is arranged on the magnetic conduction pipe;
the reversing valve core is arranged in the second reversing valve body through hole section in a vertically sliding mode, a stop ring is arranged at the upper end of the reversing valve core, the reversing valve core is provided with a reversing valve core blind hole with a downward opening, the upper end of the pilot valve core is matched in the reversing valve core blind hole, and the reversing valve core is further provided with a second flow channel communicated with the reversing valve core blind hole and the magnetic conduction pipe blind hole;
the reversing spring is sleeved on the reversing valve core, the lower end of the reversing spring abuts against the upper step face of the second reversing valve body through hole section, the upper end of the reversing spring abuts against the stop ring, and the reversing spring normally pushes the reversing valve core upwards to enable the upper end of the reversing valve core to abut against the lower end of the push rod.
Advantageously, when the coil is de-energized, the push rod is in the first position, in which the lower end of the diverter valve cartridge is flush with the lower end of the diverter valve body.
Advantageously, when the coil is energized, the push rod is in the second position, at which time the diverter spool moves downward to close the fourth through-flow aperture.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of an electromagnetic spill valve according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An electromagnetic spill valve according to an embodiment of the present invention is described in detail below with reference to the drawings.
As shown in fig. 1, an electromagnetic spill valve according to an embodiment of the present invention includes: the valve comprises a valve body 1, a pilot valve seat 4, a main valve element 2, a main spring 3a, a connecting body 6, a pilot valve element 5, a pilot spring 3b, a reversing valve body 8, a magnetic conduction pipe 9, a push rod 91, a coil 10, a reversing valve element 7 and a reversing spring 3 c.
Specifically, the valve body 1 has a valve body through hole which is through from top to bottom, the valve body through hole includes a first valve body through hole section, a second valve body through hole section, a third valve body through hole section and a fourth valve body through hole section from top to bottom, the aperture of the first valve body through hole section is larger than that of the second valve body through hole section, the aperture of the third valve body through hole section is between the aperture of the first valve body through hole section and that of the second valve body through hole section, the aperture of the fourth valve body through hole section is smaller than that of the second valve body through hole section, a first oil port P is formed in a lower opening of the valve body through hole, and the valve body 1 has a second oil port T which penetrates through a side wall of the third valve body through hole section.
The lower extreme fixed fit of pilot valve seat 4 is in the upper end of first valve body through-hole section, pilot valve seat 4 has the ascending pilot valve seat blind hole of opening, and valve body 1 has and link up the first through-hole 101 of the lateral wall of first valve body through-hole section has the link up on pilot valve seat 4 the lateral wall of pilot valve seat blind hole and the second through-hole 41 with first through-hole 101 intercommunication have the intercommunication on pilot valve seat 4 the bottom surface of pilot valve seat blind hole and the third through-hole 42 of the lower terminal surface of pilot valve seat 4.
The main valve element 2 is arranged in the second valve body through hole section in a vertically sliding manner, a damping hole 21 which is communicated up and down is arranged on the main valve element 2, and a control cavity 1a is limited between the upper end surface of the main valve element 2 and the lower end surface of the pilot valve seat 4 in the valve body through hole.
The lower end of the connector 6 is fixedly matched in the upper end of the pilot valve seat blind hole, the connector 6 is provided with a connector through hole which is communicated up and down, the connector through hole comprises a first connector through hole section, a second connector through hole section, a third connector through hole section and a fourth connector through hole section from top to bottom, the aperture of the first connector through hole section is larger than that of the second connector through hole section, the aperture of the second connector through hole section is larger than that of the third connector through hole section, and the aperture of the fourth connector through hole section is between that of the second connector through hole section and that of the third connector through hole section.
The pilot valve core 5 comprises a pilot valve core main body section with the outer diameter smaller than the aperture of the third connector through hole section and a pilot valve core diameter expanding section positioned below the pilot valve core main body section, the pilot valve core diameter expanding hole is formed in the pilot valve seat blind hole, the upper end of the pilot valve core main body section penetrates through the third connector through hole section, the pilot valve core 5 is provided with a first flow passage 51 which is communicated up and down, the lower end of the first flow passage 51 is constructed into a damping hole section 511 with the aperture smaller than the aperture of the third through hole 42, and the pilot valve core 5 is provided with a fourth through hole 52 which is communicated with the side wall of the first flow passage 51 and positioned above the upper step surface of the third connector through hole section.
The pilot valve core main body section is sleeved with the pilot spring 3b, the lower end of the pilot spring 3b abuts against the upper end face of the pilot valve core diameter expansion section, the upper end of the pilot spring 3b abuts against the upper step face of the fourth connector through hole section, the pilot spring 3b normally pushes the pilot valve core 5 downwards so that the lower end face of the pilot valve core 5 normally seals the upper opening of the third through hole 42, and at the moment, the lower edge of the fourth through hole 52 is adjacent to the upper step face of the third connector through hole section.
The reversing valve body 8 comprises a reversing valve body upper section and an adaptive reversing valve body lower section which are fixedly matched with each other and are arranged on the first connecting body through hole section, the lower end face of the reversing valve body lower section is positioned on the fourth through hole 52, the reversing valve body 8 is provided with a reversing valve body through hole which is through from top to bottom, and the reversing valve body through hole comprises a first reversing valve body through hole section and a second reversing valve body through hole section, wherein the hole diameter of the first reversing valve body through hole section and the hole diameter of the second reversing valve body through hole section are sequentially reduced from top to.
The lower end of the magnetic conduction pipe 9 is fixedly matched in the first reversing valve body through hole section, and the magnetic conduction pipe 9 is provided with a magnetic conduction pipe blind hole with a downward opening.
The push rod 91 is arranged on the magnetic conduction pipe 9, and the push rod 91 is switchable between a first position where the lower end of the push rod 91 is flush with the bottom surface of the blind hole of the magnetic conduction pipe and a second position where the lower end of the push rod 91 extends downwards into the blind hole of the magnetic conduction pipe.
The coil 10 is arranged on the magnetic conduction pipe 9.
The reversing valve core 7 is arranged in the second reversing valve body through hole section in a vertically sliding mode, a stop ring 71 is arranged at the upper end of the reversing valve core 7, the reversing valve core 7 is provided with a reversing valve core blind hole with a downward opening, the upper end of the pilot valve core 5 is matched in the reversing valve core blind hole, and the reversing valve core 7 is further provided with a second flow passage 72 communicated with the reversing valve core blind hole and the magnetic conduction pipe blind hole.
The reversing spring 3c is sleeved on the reversing valve core 7, the lower end of the reversing spring 3c abuts against the upper step surface of the second reversing valve body through hole section, the upper end of the reversing spring 3c abuts against the retaining ring 71, and the reversing spring 3c normally pushes the reversing valve core 7 upwards to enable the upper end of the reversing valve core 7 to abut against the lower end of the push rod 91.
When the coil 10 is de-energized, the push rod 9 is in the first position, and at this time, the lower end of the reversing valve core 7 is flush with the lower end of the reversing valve body 8.
When the coil 10 is energized, the push rod 9 is in the second position, in which the diverter valve spool 7 moves downward to close the fourth through-flow aperture 52.
The working principle of the electromagnetic overflow valve according to the embodiment of the invention is as follows:
first, it should be noted that an electromagnetic spill valve according to an embodiment of the present invention is installed on a hydraulic oil circuit that needs to be spilled. Specifically, the first port P is connected to a hydraulic oil path, and the first through-flow hole 101 and the second port T are connected to a tank, as will be understood by those skilled in the art.
When the pressure of the first oil port P needs to be unloaded, and the coil 10 is not charged, under the action of the reversing spring 3c, the reversing valve core 7 moves upward to the position shown in fig. 1 (i.e. the lower end of the reversing valve core 7 is flush with the lower end of the reversing valve body 8, exposing the fourth through-flow hole 52), so that the first flow passage 51 communicates with the first through-flow hole 101 through the fourth through-flow hole 52 (the first through-flow hole 101 and the second oil port T are both connected with the oil tank), the oil of the first oil port P enters the control chamber 1a through the damping hole 21 and then returns to the oil tank through the third through-flow hole 42, the first flow passage 51, the fourth through-flow hole 52, the second through-flow hole 41 and the first through-flow hole 101, because the action of the damping hole 21 causes a pressure difference between the first oil port P and the control chamber 1a (i.e. the pressure at the first oil port P is greater than the pressure in the control chamber 1 a), the pressure difference acts on the core 2 to, and the unloading function is realized.
When the first oil port P is required to generate pressure and the coil 10 is electrified, under the action of a magnetic field, the push rod 91 in the magnetic conduction pipe 9 pushes the reversing valve core 7 to move downwards against the acting force of the reversing spring 3c, so that the fourth through hole 52 is covered by the reversing valve core 7, the communication between the control cavity 1a and the second oil port T is cut off, the oil liquid of the first oil port P enters the control cavity 1a through the damping hole 21 and then does not flow, the pressure of the first oil port P is equal to that of the control cavity 1a, under the acting force of the main spring 3a, the main valve core 2 moves downwards to cut off the communication between the first oil port P and the second oil port T, the pressure of the first oil port P can continuously rise, and when the pressure of the first oil port P rises to the pressure set by the pilot spring 3b, the pressure in the control cavity 1a pushes the pilot valve core 5 to move upwards, so that the oil liquid of the control cavity 1a flows through the, When the second through-flow hole 41 and the first through-flow hole 101 flow into the oil tank, a pressure difference is generated between the first port P and the control chamber 1a (i.e., the pressure at the first port P is greater than the pressure in the control chamber 1 a), the main valve element 2 is opened, and the highest pressure is limited by the overflow, so that the safety protection effect is achieved.
The electromagnetic overflow valve has the beneficial effects that: through the design of a plug-in mounting type structure, the unloading and overflow functions are integrated, the volume is compact, the structure is simple and reasonable, and the manufacturing cost is low.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the embodiments without departing from the scope of the present invention.
Claims (3)
1. An electromagnetic spill valve, comprising:
the valve body is provided with a valve body through hole which is communicated up and down, the valve body through hole comprises a first valve body through hole section, a second valve body through hole section, a third valve body through hole section and a fourth valve body through hole section from top to bottom, the aperture of the first valve body through hole section is larger than that of the second valve body through hole section, the aperture of the third valve body through hole section is between the aperture of the first valve body through hole section and that of the second valve body through hole section, the aperture of the fourth valve body through hole section is smaller than that of the second valve body through hole section, a first oil port is formed in the lower opening of the valve body through hole, and the valve body is provided with a second oil port which is communicated with the side wall of the third valve body through hole section;
the lower end of the pilot valve seat is fixedly matched in the upper end of the first valve body through hole section, the pilot valve seat is provided with a pilot valve seat blind hole with an upward opening, the valve body is provided with a first through hole penetrating through the side wall of the first valve body through hole section, the pilot valve seat is provided with a second through hole penetrating through the side wall of the pilot valve seat blind hole and communicated with the first through hole, and the pilot valve seat is provided with a third through hole communicating the bottom surface of the pilot valve seat blind hole with the lower end surface of the pilot valve seat;
the main valve core is arranged in the through hole section of the second valve body in a vertically sliding manner, a damping hole which is communicated up and down is formed in the main valve core, and a first control cavity is defined between the upper end face of the main valve core and the lower end face of the pilot valve seat in the through hole of the valve body;
the main spring is arranged in the valve body through hole and located between the pilot valve seat and the main valve core, the upper end of the main spring abuts against the pilot valve seat, the lower end of the main spring abuts against the main valve core, and the main spring normally pushes the main valve core downwards so that the lower end face of the main valve core normally seals the upper step face of the fourth valve body through hole section;
the lower end of the connecting body is fixedly matched in the upper end of the pilot valve seat blind hole, the connecting body is provided with a connecting body through hole which is communicated up and down, the connecting body through hole comprises a first connecting body through hole section, a second connecting body through hole section, a third connecting body through hole section and a fourth connecting body through hole section from top to bottom, the aperture of the first connecting body through hole section is larger than that of the second connecting body through hole section, the aperture of the second connecting body through hole section is larger than that of the third connecting body through hole section, and the aperture of the fourth connecting body through hole section is between that of the second connecting body through hole section and that of the third connecting body through hole section;
the pilot valve core comprises a pilot valve core main body section with the outer diameter smaller than the aperture of the third connector through hole section and a pilot valve core diameter expansion section positioned below the pilot valve core main body section, the pilot valve core diameter expansion hole is formed in the pilot valve base blind hole, the upper end of the pilot valve core main body section penetrates through the third connector through hole section, the pilot valve core is provided with a first flow channel which is communicated up and down, the lower end of the first flow channel is constructed into a damping hole section with the aperture smaller than the aperture of the third through hole, and the pilot valve core is provided with a fourth through hole which is communicated with the side wall of the first flow channel and positioned above the upper step of the third connector through hole section;
the lower end of the pilot spring abuts against the upper end face of the pilot valve core diameter expansion section, the upper end of the pilot spring abuts against the upper step face of the fourth connector through hole section, the pilot spring normally pushes the pilot valve core downwards so that the lower end face of the pilot valve core normally seals the upper opening of the third through hole, and at the moment, the lower edge of the fourth through hole is adjacent to the upper step face of the third connector through hole section;
the reversing valve body comprises a reversing valve body upper section fixedly matched with the first connecting body through hole section and a reversing valve body lower section matched in the second connecting body through hole section, the lower end surface of the reversing valve body lower section is positioned above the fourth through hole, the reversing valve body is provided with a reversing valve body through hole which is through up and down, and the reversing valve body through hole comprises a first reversing valve body through hole section and a second reversing valve body through hole section, the hole diameters of which are sequentially reduced from top to bottom;
the lower end of the magnetic conduction pipe is fixedly matched in the first reversing valve body through hole section, and the magnetic conduction pipe is provided with a magnetic conduction pipe blind hole with a downward opening;
the push rod is arranged on the magnetic conduction pipe, and the push rod can be switched between a first position where the lower end of the push rod is flush with the bottom surface of the blind hole of the magnetic conduction pipe and a second position where the lower end of the push rod extends downwards into the blind hole of the magnetic conduction pipe;
the coil is arranged on the magnetic conduction pipe;
the reversing valve core is arranged in the second reversing valve body through hole section in a vertically sliding mode, a stop ring is arranged at the upper end of the reversing valve core, the reversing valve core is provided with a reversing valve core blind hole with a downward opening, the upper end of the pilot valve core is matched in the reversing valve core blind hole, and the reversing valve core is further provided with a second flow channel communicated with the reversing valve core blind hole and the magnetic conduction pipe blind hole;
the reversing spring is sleeved on the reversing valve core, the lower end of the reversing spring abuts against the upper step face of the second reversing valve body through hole section, the upper end of the reversing spring abuts against the stop ring, and the reversing spring normally pushes the reversing valve core upwards to enable the upper end of the reversing valve core to abut against the lower end of the push rod.
2. The electromagnetic spill valve of claim 1 wherein said plunger is in said first position when said coil is de-energized, and wherein said lower end of said diverter valve spool is flush with said lower end of said diverter valve body.
3. The electromagnetic spill valve of claim 1 wherein when the coil is energized, the pushrod is in the second position and the diverter spool is moved downward to close the fourth flow port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811231979.8A CN109185253B (en) | 2018-10-22 | 2018-10-22 | Electromagnetic overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811231979.8A CN109185253B (en) | 2018-10-22 | 2018-10-22 | Electromagnetic overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109185253A CN109185253A (en) | 2019-01-11 |
| CN109185253B true CN109185253B (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811231979.8A Active CN109185253B (en) | 2018-10-22 | 2018-10-22 | Electromagnetic overflow valve |
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| Country | Link |
|---|---|
| CN (1) | CN109185253B (en) |
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| CN109185253A (en) | 2019-01-11 |
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