CN212338345U

CN212338345U - Electromagnetic switching valve

Info

Publication number: CN212338345U
Application number: CN202020252671.8U
Authority: CN
Inventors: 朱景锋; 金鸥翔; 孙俊锋; 徐明诰
Original assignee: Kohler China Investment Co Ltd; Hangzhou Kambayashi Electronics Co Ltd
Current assignee: Kohler China Investment Co Ltd; Hangzhou Kambayashi Electronics Co Ltd
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2021-01-12
Anticipated expiration: 2030-03-04

Abstract

An electromagnetic switching valve, a valve body is provided with a water inlet, a water outlet A and a water outlet B, an electromagnetic coil is arranged on the valve body, an inner cavity of the electromagnetic coil is internally provided with only a fixed iron core, a moving iron core is arranged between an inlet A which is correspondingly communicated with the water outlet A and an inlet B which is correspondingly communicated with the water outlet B in the valve body, the moving iron core is arranged outside the inner cavity of the electromagnetic coil, a permanent magnet corresponding to the fixed iron core is arranged in the moving iron core, one surface of the chassis of the moving iron core faces the inlet A, and after the moving iron core moves towards the fixed iron core, one surface of the chassis is abutted against the inlet A, the other surface of the chassis of the moving iron core faces the inlet B, and when the moving iron core moves back to the fixed iron core, the other surface of the chassis leans against the inlet B. The utility model discloses simple structure can be used for large-traffic flow path to switch.

Description

Electromagnetic switching valve

Technical Field

The utility model relates to an open and close the valve that control liquid carried, especially open and close the electromagnetism diverter valve who switches between two runners.

Background

A prior art switching valve that opens-closes between two flow passages is an electromagnetic switching valve as shown in fig. 1. The valve body is provided with an electromagnetic valve assembly comprising an electromagnetic coil, a fixed iron core and a movable iron core b, the electromagnetic coil is electrified in a forward direction or a reverse direction to electrically drive the movable iron core b to move forwards or backwards, a spring is also arranged between the fixed iron core and the movable iron core, the electromagnetic coil is electrified to attract the movable iron core to retract, the valve is opened, the electromagnetic coil is powered off, the movable iron core moves forwards under the action of the spring, and the valve is closed. In fig. 1, the front part of the movable iron core b is thin and the front end of the movable iron core b is connected with a sealing cover e, the movable iron core b moves forwards and backwards to enable the sealing cover e to move between a first inlet f corresponding to a first water outlet d and a second inlet g corresponding to a second water outlet c, the opening and closing of the two inlets are switched, and water input from the water inlet a is switched and output between the first water outlet d and the second water outlet c. The electromagnetic switching valve is limited by electromagnetic force, the moving distance of the movable iron core is limited, so that the distance between the first inlet f and the second inlet g is limited, the thickness of the sealing cover e is deducted, the water flow channel is narrow, the electromagnetic switching valve is only suitable for switching water flows with medium and small flow, the switching of water flows with large flow and large flow cannot be realized, and even if the water inlet is used for conveying water with large flow, the switching of large flow cannot be realized due to large pressure loss.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve prior art electromagnetism diverter valve and can not realize the problem of large-traffic switching, provide for this the utility model discloses an electromagnetism diverter valve, this kind of electromagnetism diverter valve can realize the switching of relative large-traffic.

In order to solve the above problems, the technical scheme adopted by the utility model is that the valve body is provided with a water inlet, a water outlet A and a water outlet B, the valve body is provided with an electromagnetic coil, the special part is that the inner cavity of the electromagnetic coil is internally provided with only a fixed iron core, a moving iron core is arranged between the inlet A which is correspondingly communicated with the water outlet A and the inlet B which is correspondingly communicated with the water outlet B in the valve body, the moving iron core is arranged outside the inner cavity of the electromagnetic coil, the moving iron core is internally provided with a permanent magnet which is corresponding to the fixed iron core, one surface of the chassis of the moving iron core faces to the inlet A, when the moving iron core moves towards the fixed iron core, one surface of the chassis leans to the inlet A, the other surface of the chassis of the moving iron core faces to the inlet B, and when the moving iron core moves towards the fixed, the other surface of the chassis is abutted against the inlet B, and the movement of the moving iron core is caused by the forward electricity or the reverse electricity of the electromagnetic coil.

One surface and the other surface of the moving iron core are respectively provided with a movable sealing element A and a movable sealing element B, and correspondingly, a static valve seat A and a static valve seat B are respectively arranged at the inlet A and the inlet B.

Or a movable valve seat A and a movable valve seat B are respectively arranged on one surface and the other surface of the movable iron core, and a static sealing element A and a static sealing element B are respectively arranged at the corresponding inlet A and the inlet B.

Furthermore, the valve body is provided with a ventilation port, and a negative pressure eliminating valve core is arranged at the corresponding position of the ventilation port.

Preferably the motion iron core corresponds the valve body inner wall is equipped with the slide, and the slide plays the guide effect, and the slide is for bellied direction arris to sunken guide way is preferred.

The utility model discloses owing to be equipped with the permanent magnet in the motion iron core, at coil circular telegram after fixed iron core and under the permanent magnet interact, the motion iron core is in opposite directions big with the portable distance of fixed iron core dorsad, this is because the existence of permanent magnet, appeal between motion iron core and fixed iron core, repulsion is big, this kind of attraction and repulsion force are far greater than appeal and repulsion force between the fixed iron core of prior art solenoid valve and movable iron core, motion iron core portable distance is big, when it moves to one end, the other end corresponds cavity in the valve body big, liquid overflow passageway is wide promptly, so can realize large-traffic passageway and switch. Be equipped with ventilative mouthful and negative pressure and eliminate case the utility model discloses have the negative pressure elimination function, when reasons such as water inlet direction outage arouse this direction to produce the negative pressure condition, the negative pressure is eliminated the case and is opened ventilative mouthful, and the atmosphere gets into, eliminates the negative pressure, avoids appearing the refluence and arouses the pollution.

The invention is further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic diagram of a prior art electromagnetic switching valve;

FIG. 2 is an external view of the present invention;

FIG. 3 is an M-directional view of FIG. 2;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is an N-directional view of FIG. 2;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

fig. 7 is a schematic view of the switching valve of fig. 6 after a partial configuration change.

The figures are labeled with the corresponding parts: 1 water outlet A, 2 water outlet B, 3 ventilation port, 4 water inlet, 5 electromagnetic coil, 6 fixed iron core, 7 permanent magnet, 8 moving iron core, 81 chassis, 9 inlet B, 10 static sealing element B, 11 static sealing element A, 12 inlet A, 13 slideway, 14 moving valve seat A, 15 moving valve seat B, 16 static valve seat A, 17 static valve seat B, 18 moving sealing element A, 19 moving sealing element B, 20 negative pressure eliminating valve core, a water inlet, B movable iron core, c second water outlet, d first water outlet, e sealing cover, f first inlet, g second inlet.

Detailed Description

The utility model provides an electromagnetic switching valve, the valve body has water inlet 4, delivery port A1 and delivery port B2, is equipped with solenoid 5 on the valve body, and solenoid 5's inner enclosure intracavity sets up and only is provided with fixed iron core 6, and its axial dimension of fixed iron core 6 is greater than solenoid 5's axial dimension. A moving iron core 8 is arranged between an inlet A12 which is correspondingly communicated with the water outlet A1 and an inlet B9 which is correspondingly communicated with the water outlet B2 in the valve body, and a permanent magnet 7 which is corresponding to the fixed iron core 6 is arranged in the moving iron core 8. The edges of two sides of the bottom plate 81 of the moving iron core 8 are convex, the edge of the inlet A12 is provided with a rubber ring A11, and the edge of the inlet B9 is provided with a rubber ring B10. One side of the chassis 81 faces the inlet a12, and when the moving iron core 6 moves towards the fixed iron core 6, the protrusion of one side edge of the chassis 81 abuts against the rubber ring a 11; the other side of the chassis 81 faces the entrance B9, and when the moving core 8 moves away from the stationary core 6, the protrusion of the other side edge of the chassis 81 abuts against the rubber ring B10. The movement of the moving core 8 is caused by energizing the solenoid coil 5 in a forward direction or in a reverse direction. The inner wall of the valve body corresponding to the moving iron core 8 is provided with a slideway 13, the slideway 13 is preferably a sunken guide groove, and correspondingly, the periphery of the moving iron core 8 is provided with a protrusion extending along the circumferential direction to be matched with the guide groove. The valve body is provided with a ventilation opening 3, and a negative pressure eliminating valve core 14 is arranged at the corresponding position of the ventilation opening.

The electromagnetic coil 5 is electrified in the positive direction, referring to fig. 4, the fixed iron core 6 and the permanent magnet 7 are attracted, the moving iron core 8 moves towards the fixed iron core 6, the bulge on the edge of the right side of the chassis 81 abuts against the rubber ring A11, the inlet A12 is closed, and water input from the water inlet 4 is output from the water outlet B2; when the electromagnetic coil 5 is electrified in the reverse direction, the fixed iron core 6 and the permanent magnet 7 repel each other, and the water input from the water inlet 4 is output from the water outlet A1. The existence of the permanent magnet 7 generates relatively strong magnetic attraction-repulsion force, so that the moving iron core 8 moves relatively in a large distance, and the switching of relatively large flow is realized. The utility model discloses still have simple structure, it is easy to make and assemble, characteristics such as with low costs.

Claims

1. An electromagnetic switching valve is characterized in that a fixed iron core (6) is arranged in an inner cavity of the electromagnetic coil, a moving iron core (8) is arranged between an inlet A (12) which is correspondingly communicated with the water outlet A and an inlet B (9) which is correspondingly communicated with the water outlet B in the valve body, the moving iron core is arranged outside the inner cavity of the electromagnetic coil, a permanent magnet (7) which is corresponding to the fixed iron core is arranged in the moving iron core, one surface of a chassis (81) of the moving iron core faces the inlet A, when the moving iron core moves towards the fixed iron core, one surface of the chassis is close to the inlet A, and the other surface of the chassis (81) of the moving iron core faces the inlet B, and when the moving iron core moves back to the fixed iron core, the other surface of the chassis is abutted to the inlet B, and the movement of the moving iron core is caused by the forward electricity or the reverse electricity of the electromagnetic coil.

2. The electromagnetic switching valve according to claim 1, wherein the moving core is provided with a dynamic seal a (18) and a dynamic seal B (19) on one side and the other side, respectively, and a static valve seat a (16) and a static valve seat B (17) are provided at the inlet a and the inlet B, respectively.

3. The electromagnetic switching valve according to claim 1, wherein the moving core is provided with a moving valve seat a (14) and a moving valve seat B (15) on one side and the other side, respectively, and a static seal a (11) and a static seal B (10) are provided at the inlet a and the inlet B, respectively.

4. The electromagnetic switching valve according to claim 1, 2 or 3, characterized in that the valve body has a ventilation opening (3), and a negative pressure eliminating valve core (20) is arranged at the corresponding position of the ventilation opening.

5. The electromagnetic switching valve according to claim 1, 2 or 3, wherein the inner wall of the valve body corresponding to the moving iron core is provided with a slide way (13).

6. The electromagnetic switching valve according to claim 4, wherein the movable core has a slide (13) on an inner wall of the valve body.