CN218094382U

CN218094382U - Two-position three-way electromagnetic valve structure

Info

Publication number: CN218094382U
Application number: CN202221614966.0U
Authority: CN
Inventors: 尹宏柏; 夏家永
Original assignee: NINGBO LIDA PNEUMATIC COMPLETE SETS CO Ltd
Current assignee: NINGBO LIDA PNEUMATIC COMPLETE SETS CO Ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-12-20
Anticipated expiration: 2032-06-24

Abstract

The utility model discloses a two three-way solenoid valve structure, include casing, magnetic conduction frame, line frame, quiet iron core, coil, move iron core, sealing plug, valve core case, the intracavity of casing sets up magnetic conduction frame, valve core case, sealing plug, the intracavity of magnetic conduction frame sets up line frame, coil, the middle intracavity of line frame sets up quiet iron core, it is connected with the sealing plug with quiet iron core cooperation and tail end to move the valve core case that the below passed, set up inlet port, venthole on the chamber wall of the cavity that the sealing plug was located, valve core case top, move and set up the exhaust hole on the chamber wall of the cavity that the iron core was located, the sealing plug follows up and down the iron core and makes inlet port and venthole intercommunication or venthole and exhaust hole intercommunication, it passes the valve core case and is connected with the sealing plug for the tip of frustum form and this frustum somatic part to move the iron core tail end in this scheme improvement, has guaranteed the exhaust flow promptly, has guaranteed the area of contact with the sealing plug again, has prolonged the life of sealing plug.

Description

Two-position three-way electromagnetic valve structure

Technical Field

The utility model relates to a solenoid valve device technical field, concretely relates to two three-way solenoid valve structures.

Background

The two-position three-way electromagnetic valve is quite common in practical application, is usually matched with a pneumatic actuating mechanism for use, and can be used for switching on or switching off an air source in production. Generally speaking, a magnetic conduction frame is installed in a shell, a wire frame, a valve core seat, a sealing plug, a formed air inlet hole, an air outlet hole, an exhaust hole and the like are installed in the magnetic conduction frame and a cavity of the shell, and the sealing plug follows up the lifting of an iron core to enable the air inlet hole to be communicated with the air outlet hole or the air outlet hole to be communicated with the exhaust hole.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one technical defect, the utility model provides a following technical scheme:

the application document discloses two three-way solenoid valve structure, include casing, magnetic conduction frame, line frame, coil, quiet iron core, move iron core, sealing plug, valve core case, the intracavity of casing sets up magnetic conduction frame, valve core case, sealing plug, the intracavity of magnetic conduction frame sets up line frame, coil, the middle intracavity of line frame sets up quiet iron core, it is connected with the sealing plug with elastic component one to move iron core head end and quiet iron core and the tail end passes the valve core case and the sealing plug of below and is connected, set up elastic component two between sealing plug bottom and the conch wall, set up inlet port, venthole on the chamber wall of the cavity that the sealing plug was located, set up the exhaust hole on valve core case top, the cavity wall of the cavity that the movable iron core was located, the sealing plug makes inlet port and venthole intercommunication or venthole and exhaust hole intercommunication under elastic component two effects along with the movable iron core lift, the movable iron core tail end passes the valve core case and is connected with the sealing plug for the tip of frustum form and this frustum portion.

In the scheme, the shape of the tail end of the movable iron core is improved, so that the exhaust flow is ensured, the contact area with the sealing plug is ensured, and the service life of the sealing plug is prolonged.

Further, the peripheral wall of the frustum body is arc-shaped, and the diameter of the top end of the frustum body is larger than that of the middle part and smaller than that of the bottom end of the frustum body. In the scheme, the frustum body is approximately in a bottleneck shape, the area of the exhaust runner is increased, and the exhaust flow is increased.

Preferably, a tapered groove is formed in the middle of the head end of the valve core seat, the valve port is located at the bottom of the groove, and the structure that the head end valve port is located at the bottom of the tapered groove is beneficial to increasing the drainage flow channel area.

Furthermore, the first convex blocks are arranged on the peripheral end face of the head end valve port of the valve core seat at intervals, the second convex blocks are arranged on the periphery of the tail end valve port at intervals, the sealing plug is positioned in a hole formed by the second convex blocks in a surrounding mode, the sealing plug is in clearance fit with the second convex blocks, the end hole opening of the air inlet hole is positioned on the wall of the shell cavity below the sealing plug, the end hole opening of the air outlet hole is positioned on the wall of the periphery of the end hole opening of the air inlet hole, and the end hole opening of the air outlet hole is positioned on the wall of the cavity corresponding to the periphery of the head end of the valve core seat; preferably, the first elastic element and the second elastic element are both springs, and the elastic element is positioned between the bottom of the sealing plug and the shell wall below the sealing plug. When the valve core seat sealing plug is used, gas flowing out of the valve core seat valve port can flow out from between the two first convex blocks, the two pairs of convex blocks guide the movement of the sealing plug so as to improve the stability, and meanwhile, gas flowing out of the gas inlet hole can flow into the gas outlet hole from between the two convex blocks to play a role of a circulation channel. The number of the first bumps and the second bumps can be freely selected according to requirements, and the head end and the tail end of the valve core seat can be conveniently distinguished when the number of the first bumps and the number of the second bumps are different, so that the valve core seat is convenient to assemble.

Further, another tip drill way of inlet port is located the lateral wall of casing, another tip drill way of venthole extends to the casing diapire, another tip drill way of exhaust hole is located the lateral wall of casing.

Furthermore, the first projection is abutted against the bottom wall of the magnetic conduction frame, and an end opening of the exhaust hole is formed in the wall of the shell cavity at the periphery of the first projection.

Furthermore, the corresponding valve port above the sealing plug protrudes outwards to form a frustum shape, and the angle of the valve port is 135 degrees. The valve port at the tail end is integrally in a frustum shape, the valve port angle refers to the angle of the intersection of two sides of the right section of the frustum body, the preferred angle is 135 degrees, and if the angle is too small, the sealing surface is sharper, and the sealing plug is easy to damage; the angle is too large to facilitate sealing and this angle helps to prolong the life of the sealing plug.

Furthermore, the head end of the static iron core extends out of the wire frame and is riveted and fixed with the magnetic conduction frame, so that the magnetic conduction frame cannot shift in the injection molding process, and the coaxiality of three parts of the static iron core, the wire frame and the magnetic conduction frame is guaranteed.

Further, set up the holding tank on the line frame chamber wall that movable iron core head end perisporium corresponds, can produce spot or other impurity sneaks into of action in-process after movable iron core and line frame are used for a long time, the holding tank can play the effect of a temporary storage impurity, and movable iron core can not lead to the motion not smooth because of a small amount of impurity simultaneously. To the shaping of holding tank, if direct in the shaping recess of corresponding position chamber wall cigarette, perhaps line frame intracavity shaping shoulder hole, the downthehole static iron core of head end internal fixation, the quiet iron core diameter of axle is greater than the diameter of axle that moves the iron core, moves the head end of iron core and stretches into the vestibule that quiet iron core is located, then moves the peripheral vestibule of iron core head end and is the holding tank.

Furthermore, a guide ring is sleeved on the movable iron core and fixed on the wire frame so as to enhance the electromagnetic attraction.

Furthermore, the wall of the tail end cavity of the wire frame cavity is provided with exhaust grooves which are formed in a protruding mode at intervals in the radial direction, the exhaust grooves extend in the axial direction, guiding of the movable iron core can be guaranteed, and exhaust during movement of the movable iron core can be met.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses move iron core tail end shape in order to improve the cooperation relation with valve core case, sealing plug in improving two three-way solenoid valve, guarantee exhaust flow and area of contact to improve in order to improve stability, facilitate the use according to mounting structure, exhaust passage etc. on this basis.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

Fig. 1 is a schematic cross-sectional structural view of the structure of the two-position three-way electromagnetic valve in embodiment 1;

FIG. 2 is a schematic sectional view of a bobbin;

FIG. 3 is a schematic view of the valve cartridge seat;

FIG. 4 is a schematic view of the valve cartridge seat;

FIG. 5 is a schematic overall view of the two-position three-way solenoid valve structure;

FIG. 6 is a schematic diagram of a pin construction;

FIG. 7 is a schematic view of a screw and end plate connection;

wherein the reference numerals are:

1. a body; 2. an end plate; 3. a magnetic conduction frame; 4. a wire frame; 5. a coil; 6. a stationary iron core; 7. a movable iron core; 8. a valve core seat; 9. a sealing plug; 10. an air inlet; 11. an air outlet; 12. an exhaust hole; 13. inserting a pin; 14. a guide ring; 15. a screw; 16. a first elastic part; 17. a second elastic part; 41. an exhaust groove; 61. riveting the groove; 81. a first bump; 82. a second bump; 83. a valve port; 131. a barb; 710. a top end; 711. an intermediate portion; 712. and a bottom end.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1 and 5, in this embodiment, a two-position three-way electromagnetic valve structure includes a housing, a magnetic conduction frame 3, a coil frame 4, a stationary core 6, a coil 5, a movable core 7, a sealing plug 9, and a valve core seat 8, the C-shaped magnetic conduction frame 3 is fixed in a cavity of the housing, an i-shaped coil frame 4 is fixed in the cavity of the magnetic conduction frame 3, the coil 5 is wound on the coil frame 4, a through hole is axially formed at a longitudinal end of the coil frame 4, the stationary core 6 is installed in the cavity of the through hole, the movable core 7 is installed in the cavity below the stationary core 6, an elastic member 16, i.e., a spring, is installed between a head end of the movable core 7 and a tail end of the stationary core 6, and installation of the coil on the coil frame and installation and cooperation of the movable core and the stationary core are conventional technologies, which are not described again.

In this embodiment, the valve core seat 8 is installed in the cavity of the housing below the wire holder 4, the sealing plug 9 is installed in the cavity of the housing below the valve core seat 8, the air inlet hole 10 is formed in the cavity wall right below the sealing plug 9, and a spring is installed between the bottom of the sealing plug and the wall of the opening of the air inlet hole below, that is, the elastic element two 17, the air inlet hole 10 is communicated with the outside of the housing, the air outlet hole 11 is formed in the cavity wall on one side of the sealing plug 9, the air outlet hole is communicated with the outside of the housing, and the air outlet hole 12 is formed in the cavity wall of the housing above the valve core seat 8 and communicated with the outside of the housing. As shown in fig. 1, 3 and 4, a valve port is formed in the center of the valve core seat 8, the tail end of the movable iron core 7 is frustum-shaped, the end part of the frustum-shaped body penetrates through the valve core seat 8 and is abutted to the sealing plug 9, when the valve is used, the coil is electrified to generate electromagnetic force, the movable iron core is attracted to overcome the elastic force of the elastic element I, the movable iron core rises to be attracted to the static iron core, and meanwhile, the sealing plug is separated from the air inlet hole under the action of air pressure and the elastic element II to enable the air inlet hole to be communicated with the air outlet hole; and when the coil is powered off, the electromagnetic force disappears, the movable iron core is separated from the static iron core, and the movable iron core resets under the action of the first elastic element and promotes the sealing plug to reset and block the air inlet.

The movable iron core 7 has large end area of the frustum body, is convenient to abut against the sealing plug, has large contact area and stable connection, increases the sectional area of a flow passage formed between the peripheral wall and the valve core seat, and has large exhaust flow. In this embodiment, the peripheral wall of the frustum portion is arc-shaped, and the diameter of the top end 710 of the frustum portion is larger than the diameter of the middle portion 711 and smaller than the diameter of the bottom end 712 of the frustum portion, so as to form a bottle neck-like structure, thereby ensuring the contact mounting area with the sealing plug, and simultaneously increasing the sectional area of the exhaust flow channel between the peripheral wall and the valve core seat valve port again, and increasing the exhaust flow. Of course, as shown in fig. 1, 3 and 4, a tapered groove is formed in the middle of the head end of the valve core seat 8, and the valve port is located at the bottom of the tapered groove. The structure of the head end valve port at the bottom of the conical groove is matched with the arc-shaped peripheral wall of the movable iron core frustum body, so that the area of an exhaust flow channel is increased. In this embodiment, it is preferable to use the valve port structure shown in fig. 1, in which the valve port protrudes from the bottom surface of the valve core seat and is in the shape of a frustum, and the angle at the intersection of two sides of the right cross section of the frustum is 135 °, which helps to prolong the life of the sealing plug.

In this embodiment, as shown in fig. 3, 4, and 1, a plurality of first protrusions 81 are formed at intervals on the peripheral end surface of the head end valve port of the valve core seat 8, the vent hole 12 is formed on the cavity wall of the housing, which is toward the first protrusions 81, and the opening at the other end of the vent hole 12 is located on the side wall of the housing. The first projection 81 is L-shaped, a flow channel is formed between the longitudinal end of the first projection 81 and the cavity wall, and gas flowing out of the gas outlet directly enters the exhaust hole or enters the exhaust hole after passing through the flow channel. A plurality of second bumps 82 are formed on the peripheral end face of the valve port at the tail end of the valve core seat 8 at intervals and are rectangular, an air outlet hole 11 is formed on the cavity wall towards which the second bumps 82 face, and an opening at the other end of the air outlet hole 11 is positioned on the bottom wall of the shell. The sealing plug 9 is positioned in a hole surrounded by the second bump 82, the sealing plug 9 is in clearance fit with the second bump 82, and the second bump 82 is used for guiding the sealing plug in a sliding manner, so that the stability is improved. An air inlet hole 10 orifice formed in a protruding mode is formed right below the sealing plug 9, the spring is selected for the elastic piece II, the tail end of the spring is sleeved at the air inlet hole, the head end of the spring abuts against the bottom of the sealing plug, and the other end orifice of the air inlet hole 10 is located on the side wall of the shell. The gas flowing in from the gas inlet hole flows out to the gas outlet hole. The number of the first bump and the second bump can be freely selected according to requirements, for example, the first bump is six, the second bump is four, and the like, wherein the first bump 81 can be in an L shape according to requirements, and the assembly and disassembly are convenient.

In this embodiment, as shown in fig. 1 and 2, the accommodating groove is formed in the cavity wall of the wire frame 4 corresponding to the circumferential wall of the head end of the movable iron core 7, specifically, the lower portion of the cavity of the axial through hole at the longitudinal end of the wire frame 4 is provided with convex ridges which are formed to protrude radially and outwards at intervals, the convex ridges extend axially, the axial through hole at the longitudinal end of the whole wire frame forms a step shape, the exhaust grooves 41 are formed between the convex ridges to guide the movable iron core, and the exhaust grooves assist in exhausting when the movable iron core moves. Quiet iron core 6 is located the vestibule of protruding stupefied top, moves iron core 7 head end simultaneously and stretches into the cavity that quiet iron core 6 was located, moves the peripheral cavity space formation holding tank of iron core 7 head end, holds temporarily and moves iron core and line frame and can produce the impurity etc. that spot or sneak into after using for a long time, helps keeping the stability of moving the iron core operation.

In this embodiment, as shown in fig. 1 and 5, the housing is composed of two parts, including an upper body 1 and a lower end plate 2, both of which are rectangular, a magnetic conduction frame 3, a bobbin 4, etc. are installed in an axial cavity of the body 1, and a pin 13 is installed on the body 1 for electrical connection, as shown in fig. 6, the L-shaped pin 13 is statically welded to the coil enameled wire, and a barb 131 is formed on the peripheral wall of the end portion of the pin 13 to improve the stability of connection with the wall of the body cavity. The peripheral wall of the cavity opening on the bottom surface of the body 1 is provided with an exhaust hole. The valve core seat 8, the sealing plug 9 and the like are arranged in the axial cavity of the end plate 2, wherein the valve core seat 8 is positioned at the cavity opening of the top end face of the end plate 2, the first bump on the valve core seat 8 is abutted against the bottom wall of the magnetic conduction frame 3, and an air inlet hole, an air outlet hole and the like are formed on the cavity wall of the end plate 2. The end plate 2 and the body 1 are fixed by screws 15, as shown in fig. 5 and 7, mounting holes for screws are formed at opposite corners of the body and the end plate, ends of the screws penetrate through the body and are screwed into the end plate, the structure of the opposite-corner mounting screws is also beneficial to clamping and fixing the magnetic conduction frame, the stability is good, and the deformation of the shell caused by the fact that the screws are locked on the plastic shell can be avoided.

In addition, as shown in fig. 1, the head end of the static iron core 6 extends out from the coil holder 4, and extends out from the hole punched on the top surface of the magnetic conducting frame 3 for riveting fixation, and the head end surface of the static iron core 6 is formed with a riveting groove 61, so that the coil holder, the magnetic conducting frame and the static iron core are fixed into a whole by riveting fixation, and the fixed coaxiality of the coil holder, the magnetic conducting frame and the static iron core is ensured. As shown in figure 1, the movable iron core 7 is sleeved with a guide ring 14, and the guide ring 14 is fixed at the orifice of the bottom surface of the wire frame 4 so as to enhance the electromagnetic attraction force.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.

Claims

1. The utility model provides a two three-way solenoid valve structure, includes casing, magnetic conduction frame, line frame, coil, quiet iron core, moves iron core, sealing plug, valve core case, the intracavity of casing sets up magnetic conduction frame, valve core case, sealing plug, the intracavity of magnetic conduction frame sets up line frame, coil, the middle intracavity of line frame sets up quiet iron core, it is connected with the sealing plug with elastic component one to move iron core head end and quiet iron core and the tail end passes the valve core case and the sealing plug of below and be connected, set up elastic component two between sealing plug bottom and the conch wall, set up inlet port, venthole on the chamber wall of the cavity that the sealing plug was located, set up the exhaust hole on valve core case top, the chamber wall of the cavity that the moving iron core was located, the sealing plug makes inlet port and venthole intercommunication or venthole and exhaust hole intercommunication under the effect of elastic component two, its characterized in that it passes the valve core case and is connected with the sealing plug for the tip of frustum form and this frustum body portion to move the iron core tail end.

2. The structure of a two-position three-way solenoid valve as claimed in claim 1, wherein: the peripheral wall of the frustum body is arc-shaped, and the diameter of the top end of the frustum body is larger than that of the middle part and smaller than that of the bottom end of the frustum body.

3. The structure of a two-position three-way solenoid valve as claimed in claim 2, wherein: a conical groove is formed in the middle of the head end of the valve core seat, and the valve port is located at the bottom of the groove.

4. The structure of a two-position three-way solenoid valve according to claim 1, characterized in that: the end face of the periphery of the head end valve port of the valve core seat is provided with a first bump at intervals, the periphery of the tail end valve port is provided with a plurality of second bumps at intervals, the sealing plug is positioned in a hole formed by the second bumps in a surrounding mode, the sealing plug is in clearance fit with the second bumps, the end hole opening of the air inlet hole is positioned on the wall of the shell cavity below the sealing plug, the end hole opening of the air outlet hole is positioned on the wall of the periphery of the end hole opening of the air inlet hole, and the end hole opening of the air outlet hole is positioned on the wall of the cavity corresponding to the periphery of the head end of the valve core seat.

5. The structure of a two-position three-way solenoid valve according to claim 4, wherein: the first elastic part and the second elastic part are both springs, and the second elastic part is located between the bottom of the sealing plug and the shell wall below the sealing plug.

6. The structure of a two-position three-way solenoid valve according to claim 4, wherein: another tip drill way of inlet port is located the lateral wall of casing, another tip drill way of venthole extends to the casing diapire, another tip drill way of exhaust hole is located the lateral wall of casing.

7. The structure of a two-position three-way solenoid valve according to claim 4, wherein: the first convex block is abutted against the bottom wall of the magnetic conduction frame, and an end opening of the exhaust hole is formed in the wall of the shell cavity on the periphery of the first convex block.

8. The structure of a two-position three-way solenoid valve according to claim 4, wherein: the corresponding valve port above the sealing plug protrudes outwards to form a frustum shape, and the angle of the valve port is 135 degrees.

9. The structure of a two-position three-way solenoid valve as claimed in claim 1, wherein: the head end of the static iron core extends out of the wire frame and is riveted and fixed with the magnetic conduction frame.

10. The structure of a two-position three-way solenoid valve according to claim 1, characterized in that: and the wall of the wire frame cavity corresponding to the peripheral wall of the head end of the movable iron core is provided with an accommodating groove.

11. The structure of a two-position three-way solenoid valve as claimed in claim 1, wherein: the movable iron core is sleeved with a guide ring, and the guide ring is fixed on the wire frame.

12. The structure of a two-position three-way solenoid valve according to claim 1, characterized in that: and the wall of the tail end cavity of the coil holder cavity is provided with exhaust grooves which are formed in a protruding mode at intervals in the radial direction and extend in the axial direction.