CN211649234U

CN211649234U - Miniaturized water inlet electromagnetic valve with anti-blocking function

Info

Publication number: CN211649234U
Application number: CN201922245535.6U
Authority: CN
Inventors: 张晶源; 陈鹏华; 胡登; 金泽轩; 汤诗槐
Original assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Current assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-10-09
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a miniaturized water inlet solenoid valve of stifled function is prevented in area, including valve body subassembly, seal assembly, iron core subassembly and coil pack, the coil pack includes coil former, coil winding and plastic envelope casing, the coil former outside is seted up and is supplied the coil winding to twine the wire casing on the coil former, iron core subassembly includes iron core and elastic component, gliding cavity about having in the coil former supplies the iron core, the iron core supports seal assembly under the effect of elastic component, still be equipped with on the valve body subassembly and prevent stifled structure. The utility model has the advantages of reduce the assembly cost when the solenoid valve is assembled, reduce the enameled wire quantity.

Description

Miniaturized water inlet electromagnetic valve with anti-blocking function

Technical Field

The utility model relates to a solenoid valve technical field especially relates to a miniaturized solenoid valve of intaking of stifled function is prevented in area.

Background

The magnetic circuit of the prior pilot-operated water inlet solenoid valve consists of an upper yoke iron, a lower yoke iron, an iron core and an air gap, wherein the upper yoke iron and the lower yoke iron are arranged on a coil plastic-coated component and need to be riveted and fixed. The upper and lower yokes are provided with circular cylindrical magnetic sleeves which are arranged in the coil rack, and the inner layer of the magnetic sleeves is an inner sleeve component containing an iron core. Because there are multilayer spare parts to the iron core inside the coil winding, can't be with the design of wire winding internal diameter littleer. The pilot-operated solenoid valve is easy to block side holes, and if the side holes are blocked, the solenoid valve cannot close water, so that the solenoid valve fails.

The upper yoke and the lower yoke of the existing electromagnetic valve are provided with circular ring cylindrical magnetic sleeve parts, the production cost is higher, certain assembly cost is also needed when the electromagnetic valve is assembled by riveting and fixing, and a certain ampere-turn number can be reached by thick and long enameled wires to ensure electromagnetic force due to the larger outer diameter of the coil frame, so that the product has higher copper consumption.

Disclosure of Invention

The utility model aims at providing a reduce miniaturized solenoid valve of intaking of stifled function in area of enameled wire quantity to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a miniaturized water inlet solenoid valve of stifled function is prevented in area, includes valve body subassembly, seal assembly, iron core subassembly and coil pack, coil pack includes coil former, coil winding and plastic envelope casing, the coil former outside is seted up and is supplied the coil winding to twine the wire casing on the coil former, iron core subassembly includes iron core and elastic component, gliding cavity about having in the coil former supplies the iron core, the iron core supports seal assembly under the effect of elastic component, still be equipped with on the valve body subassembly and prevent stifled structure.

The utility model simplifies the magnetic circuit structure, cancels the use of the magnetic sleeve and the upper and lower yokes, can cancel the riveting process and reduce the assembly cost when the electromagnetic valve is assembled; the inner sleeve and the coil rack are combined into a whole, only one part is blocked between the iron core and the coil, so that the inner diameter of the winding can be further reduced, and the required ampere-turn number can be achieved by using thinner and shorter enameled wires to obtain the required electromagnetic force, thereby reducing the using amount of the enameled wires and greatly reducing the production cost of the electromagnetic valve; the distance between the iron core and the coil is short, the coil controls the iron core to move up and down more sensitively, and the iron core moves up and down more accurately; the anti-blocking structure is used for realizing the anti-blocking function of the electromagnetic valve and preventing the electromagnetic valve from losing effectiveness due to the blockage of foreign matters.

The sealing assembly comprises a sealing ring and a sealing ring frame which are clamped with each other, a through hole is formed in the middle of the sealing ring frame, and an edge hole is formed in the position, deviating from the axis, of the sealing ring; when the electromagnetic valve is not electrified, the iron core blocks the through hole of the sealing ring frame, water flows in from the water inlet and flows into the back pressure cavity from the side hole to form back pressure, and the sealing ring seals the water sealing surface to close the valve; when the electromagnetic valve is electrified, the iron core leaves the through hole of the seal ring frame, so that the back pressure cavity is decompressed, the water inlet pressure upwards backs up the seal ring, and the electromagnetic valve discharges water.

The anti-blocking structure selects a poking needle matched with the side hole, and when the electromagnetic valve is switched on or switched off, the sealing ring side hole moves relative to the poking needle on the valve body, so that foreign matters can be removed.

The sealing ring and the valve body assembly are mutually matched through the fool-proof structure, so that the poking needle of the valve body assembly is smoothly inserted into the edge hole of the sealing ring.

Prevent slow-witted structure including locate on the sealing washer prevent slow-witted convex part with locate the valve body subassembly on prevent slow-witted recess, simple structure, the production degree of difficulty is low, prevent slow-witted effectual.

At least two water passing grooves are formed in the sealing ring frame, so that water flowing into the back pressure cavity from the side hole can quickly fill the whole back pressure cavity, the acting force of the water pressure in the back pressure cavity on the sealing ring is uniform, the effect of sealing the water sealing surface by the sealing ring is guaranteed, and the phenomenon that the sealing ring is unevenly stressed and inclines to generate a gap is avoided.

The water pressure can smoothly enter the backpressure cavity through the water passing channel between the step surface and the sealing ring under the condition that the grooving positions at two positions of the sealing ring frame are not aligned to the edge hole of the sealing ring, so that backpressure is formed in the backpressure cavity to enable the sealing ring to seal the water sealing surface.

The bottom of the iron core is provided with a rubber core, so that the sealing effect is better when the iron core blocks the through hole, and water in the back pressure cavity cannot flow out from the through hole.

The iron core and the rubber core are connected in a riveting mode, the rubber core is prevented from being inclined during installation, and the installation effect is good.

The upper end of the cavity is provided with a magnetic conduction core, and the magnetic conduction core is connected with the coil rack in a sealing way through an O-shaped ring.

Compared with the prior art, the utility model has the advantages of assembly cost when reducing the solenoid valve equipment, reduce the enameled wire quantity.

Drawings

Fig. 1 is an exploded schematic view of the present invention;

fig. 2 is a first schematic cross-sectional view of the present invention;

FIG. 3 is a partial schematic view at C of FIG. 2;

fig. 4 is a schematic cross-sectional view of the present invention;

FIG. 5 is a schematic illustration of a core assembly staking;

FIG. 6 is a mating schematic view of the valve body assembly and the seal assembly;

in the figure, A is a water inlet; B. a water outlet; 1. a valve body assembly; 2. a seal assembly; 3. an iron core assembly; 4. a coil assembly; 5. a bobbin; 6. a coil winding; 7. plastic packaging the shell; 8. a wire slot; 9. an iron core; 10. an elastic member; 11. a cavity; 12. a seal ring; 13. a seal ring frame; 131. a through hole; 14. a side hole; 15. poking a needle; 16. a fool-proof convex part; 17. a fool-proof groove; 18. a water trough; 19. a step surface; 20. a water passage; 21. a rubber core; 22. a magnetically conductive core; 23. an "O" ring; 24. a back pressure chamber; 25. an iron plate; 26. a self-tapping screw.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-6, a miniaturized water inlet solenoid valve with anti-blocking function comprises a valve body assembly 1, a sealing assembly 2, an iron core assembly 3 and a coil assembly 4, wherein the valve body assembly 1 comprises a water inlet a and a water outlet B, the coil assembly 4 comprises a coil frame 5, a coil winding 6 and a plastic package casing 7, a wire slot 8 for winding the coil winding 6 on the coil frame 5 is arranged at the outer side of the coil frame 5, the plastic package casing 7 is used for plastic packaging the coil winding 6 in the wire slot 8, so as to prolong the service life of the coil winding 6, the iron core assembly 3 comprises an iron core 9 and an elastic part 10, a cavity 11 for the iron core 3 to slide up and down is arranged in the coil frame 5, the cavity 11 penetrates through the upper end and the lower end of the coil frame 5, a magnetic core 22 partially inserted into the top of the cavity 11 is arranged at the upper end of the coil frame 5, the magnetic core 22 is hermetically, spring is selected for use to elastic component 10, and elastic component 10 one end is connected under magnetic core 22 on the terminal surface, and the other end inserts in iron core 9 and rather than fixed connection, and stability when elastic component 10 drive iron core 9 moves from top to bottom improves, and iron core 3 supports seal assembly 2 under elastic component 10's effect, still is equipped with on the valve body subassembly 1 and prevents stifled structure, backpressure chamber 24 has in the valve body subassembly 1.

In further detail, the sealing assembly 2 comprises a sealing ring 12 and a sealing ring frame 13 which are clamped with each other, the sealing ring 12 is sleeved at the lower end of the sealing ring frame 13, a through hole 131 is formed in the middle of the sealing ring frame 13, the sealing ring 12 deviates from the axis of the sealing ring and is provided with an edge hole 14, and the edge hole 14 is located at one end far away from the water inlet A after the sealing assembly 2 is installed.

Further saying in a detailed way, stifled structure chooses for use and disclose needle 15 with side hole 14 matched with, disclose needle 15 integrated into one piece on valve body assembly 1, and when sealing washer 12 sealed the water face, disclose needle 15 and insert in order to release the foreign matter of jam in side hole 14, compare traditional spring and add a pin as disclosing the needle, can reach the side hole of more ideal and prevent stifled effect.

Further saying, sealing washer 12 and valve body subassembly 1 mutually support through preventing slow-witted structure, and the equipment has conveniently improved the manufacturability of installation, guarantees that sealing washer 12 installation back, and its limit hole 14 is in same axle center department with disclosing needle 15, disclose needle 15 and must insert to the limit hole 14 in when sealing washer 12 up-and-down motion and clear up the foreign matter.

Further saying in detail, prevent slow-witted structure including locate on the sealing washer 12 prevent slow-witted convex part 16 with locate on the valve body subassembly 1 prevent slow-witted recess 17, prevent slow-witted convex part 16 and prevent slow-witted recess 17 and all set up along the solenoid valve direction of height, when the relative valve body subassembly 1 up-and-down motion of sealing washer 12, thereby prevent that slow-witted convex part 16 also can provide the guide effect along preventing slow-witted recess 17 up-and-down motion for sealing washer 12, take place the deflection when preventing the sealing washer 12 up-and-down motion.

Preferably, prevent that slow-witted convex part 16 and prevent slow-witted recess 17 all set up to arc, compare other structures that have a right angle, the laminating of arc structure is inseparabler.

In a detailed description, at least two water passing grooves 18 are formed in the seal ring frame 13, in the embodiment, two water passing grooves 18 are symmetrically arranged, after the seal ring frame 13 is installed, one water passing groove 18 is located close to the water inlet a side, the other water passing groove 18 is located close to the upper side of the side hole 14, when water flows into the back pressure cavity 24 from the side hole 14, the water flowing out from the side hole 14 can rapidly flow to the side, away from the side hole 14, of the back pressure cavity 24 through the two water passing grooves 18, so that the acting force of the water pressure in the back pressure cavity on the seal ring is uniform, the effect of the seal ring on the water sealing surface is guaranteed, and the phenomenon that the seal ring is unevenly stressed to incline to generate.

In other embodiments, the water passage grooves 18 may be provided in plural numbers along the circumferential direction of the seal ring carrier 13 to improve the flow efficiency of water in the back pressure chamber 24.

In more detail, the edge of the seal ring frame 13 is provided with a step surface 19 along the circumferential direction, the step surface 19 and the seal ring 12 form a water passing channel 20 at intervals, the water passing channel 20 is communicated with the side hole 14, the outer side of the water passing channel 20 is communicated with a backpressure cavity 24, so that under the condition that the water passing grooves 18 at two positions of the seal ring frame are not aligned with the side hole of the seal ring, water pressure can smoothly enter the backpressure cavity through the water passing channel 20, and when the electromagnetic valve is closed, backpressure can be formed in the backpressure cavity 24, so that the seal ring 12 seals the water sealing surface.

Further saying in detail, 3 bottoms of iron core are equipped with rubber core 21, thereby rubber core 21 can take place deformation when contradicting in seal ring frame 13 and make and block up through-hole 131, compare iron core 9 and direct and the contact of seal ring frame 13, rubber core 21's sealed effect is better, takes place to leak when effectively preventing that the solenoid valve from closing.

Preferably, the iron core 3 and the rubber core 21 are riveted, the rubber core 21 is partially embedded into the bottom of the iron core 3, and the lower end face of the rubber core 21 is flush with the iron core 3 to block the through hole 131.

In a further detail, the coil assembly 4 is tightly fitted and fastened with an iron plate 25 and fixed on the valve body assembly 1 by a tapping screw 26, so that the connection strength between the coil assembly 4 and the valve body assembly 1 is ensured.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a miniaturized water inlet solenoid valve of stifled function is prevented in area, includes valve body subassembly (1), seal assembly (2), iron core subassembly (3) and coil pack (4), valve body subassembly (1) includes water inlet (A) and delivery port (B), its characterized in that: coil pack (4) include coil former (5), coil winding (6) and plastic envelope casing (7), coil former (5) outside is seted up and is supplied coil winding (6) winding to wire casing (8) on coil former (5), iron core subassembly (3) are including iron core (9) and elastic component (10), gliding cavity (11) about supplying iron core (9) have in coil former (5), iron core (9) support seal assembly (2) under the effect of elastic component (10), still be equipped with on valve body subassembly (1) and prevent stifled structure.

2. The miniaturized water inlet electromagnetic valve with the anti-blocking function according to claim 1, characterized in that: seal assembly (2) including sealing washer (12) and the seal ring frame (13) of mutual joint, through-hole (131) have been seted up in seal ring frame (13) middle part, limit hole (14) have been seted up to sealing washer (12) skew its axle center department.

3. The miniaturized water inlet electromagnetic valve with the anti-blocking function according to claim 2, characterized in that: the anti-blocking structure adopts a poking needle (15) matched with the side hole (14).

4. The miniaturized water inlet electromagnetic valve with the anti-blocking function according to claim 2, characterized in that: the sealing ring (12) and the valve body assembly (1) are matched with each other through a fool-proof structure.

5. The miniaturized water inlet electromagnetic valve with the anti-blocking function according to claim 4, characterized in that: the fool-proof structure comprises a fool-proof convex part (16) arranged on the sealing ring (12) and a fool-proof groove (17) arranged on the valve body assembly (1).

6. The miniaturized water inlet electromagnetic valve with the anti-blocking function according to claim 2, characterized in that: the sealing ring frame (13) is provided with at least two water passing grooves (18).

7. The miniaturized water inlet electromagnetic valve with the anti-blocking function according to claim 2, characterized in that: the sealing ring frame is characterized in that a step surface (19) is arranged at the edge of the sealing ring frame (13) along the circumferential direction of the sealing ring frame, a water passing channel (20) is formed between the step surface (19) and the sealing ring (12) at intervals, and the water passing channel (20) is communicated with the side hole (14).

8. The miniaturized water inlet electromagnetic valve with the anti-blocking function according to claim 1, characterized in that: the bottom of the iron core (9) is provided with a rubber core (21).

9. The miniaturized water inlet electromagnetic valve with the anti-blocking function of claim 8, characterized in that: the iron core (9) is connected with the rubber core (21) in a riveting mode.

10. The miniaturized water inlet electromagnetic valve with the anti-blocking function according to claim 1, characterized in that: the magnetic conduction coil is characterized in that a magnetic conduction core (22) is arranged at the upper end of the cavity (11), and the magnetic conduction core (22) is connected with the coil rack (5) in a sealing mode through an O-shaped ring (23).