KR200191668Y1 - Solenoid valve having manual-switching and on-take keeping functions - Google Patents

Abstract

Even if the power is cut off while the valve is open, the return prevention lever prevents the plunger from returning and maintains the valve open, and prevents the return from power failure, which can easily open and close the valve in the event of a malfunction or failure of the solenoid valve. It is to provide a solenoid valve with a function and a manual opening and closing operation.

Such a solenoid valve includes a valve body having an inlet and an outlet, a diaphragm installed inside the valve body to open and close between the inlet and the outlet, a return preventing lever installed at an upper side of the valve body, A manual operation lever provided in a direction orthogonal to the return preventing lever, a plunger linearly moved by the electromagnetic force generated in the coil, and an elastic member that resists the movement of the plunger.

The return preventing lever keeps the diaphragm open even when the power is cut off when the valve is used. The manual control lever simply rotates the lever in the event of a failure or emergency of the solenoid valve to raise the plunger by a predetermined distance. It is characterized by being configured to allow the fluid to continue to rise.

Description

Solenoid valve with return prevention function in case of power failure and manual open / close operation

The present invention relates to a solenoid valve having a return prevention function and a manual opening / closing operation in case of a power failure, and more particularly, the manual return lever maintains the plunger even when the power is cut off while the valve is open. And a solenoid valve for manual operation in the event of a failure or emergency of the solenoid valve drive unit, so that the valve can be easily opened and closed by manual operation. will be.

In general, as shown in FIG. 7, the solenoid valve has a valve body 84 having an inlet 80 and an outlet 82 formed therein, and is installed inside the valve body 84 and has the inlet 80 and the outlet. Diaphragm 86 for opening and closing the 82, the plunger housing 96 is fixed to the upper surface of the cap 90 by the rod 88, the plunger housing 96 is built-in, the plunger 94, It has a structure having a coil 98 and the elastic member 100 wound on the outer peripheral surface of the lower housing (96).

In the solenoid valve having such a structure, when the power is supplied to the coil 98, the coil 98 is magnetized, and the magnetic force causes the plunger 94 to overcome the elastic force of the elastic member 100 and rise a predetermined distance. The inlet port 80 and the outlet port 82 communicate with each other to move the fluid.

However, the solenoid valve of such a structure, when the power is cut off in the open state, the diaphragm is lowered by the restoring force of the plunger spring to block the inlet and outlet, so that the water supply when used in the water supply line that needs to be kept open Is stopped.

Therefore, conventionally, the line which can supply water in case of emergency is provided separately.

The present invention is devised to solve the conventional problems as described above, the object of the present invention is that the diaphragm is kept open because the manual return lever maintains the plunger even when the power supply is cut off when the water supply line is used. Water supply is not interrupted, and in case of solenoid valve drive failure or emergency, the valve can be easily opened and closed to provide water supply to the normal water supply line. have.

In order to realize the object of the present invention as described above, the valve body is formed in the inlet and outlet, the diaphragm is installed in the valve body to open and close between the inlet and outlet, and installed on the upper side of the valve body A return prevention lever, a manual operation lever provided in a direction orthogonal to the return prevention lever, a plunger linearly moved by the electromagnetic force generated in the coil, and an elastic member that resists the movement of the plunger Provides solenoid valve with function and manual opening and closing operation.

The above-mentioned return prevention lever keeps the diaphragm open even when the power is cut off when the valve is used, and when it is desired to shut off the flow of the fluid, when the pullback prevention lever is pulled out, the plunger is returned by the force of the elastic member elastically installed on the plunger. This closes the flow of fluid.

The manual control lever is used in case of failure or emergency of the driving part of the solenoid valve and rotates at an angle to make the diaphragm open by raising the plunger so that the diaphragm can be opened, and the manual control lever is made. When the return to the original position is characterized in that the plunger is returned by the force of the elastic member elastically installed in the plunger is configured to close the diaphragm to stop the flow of fluid.

1 is a longitudinal cross-sectional view of the initial state of the solenoid valve according to the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

Figure 3a, Figure 3b is a cross-sectional view showing a return preventing lever of the solenoid valve according to the present invention.

Figure 4 is a front view and a side view showing a manual operation lever of the solenoid valve according to the present invention.

Figure 5 is a longitudinal cross-sectional view of the operation of the return prevention lever of the solenoid valve according to the present invention.

Figure 6 is a sectional view showing that the solenoid valve according to the present invention to operate using a manual operation lever.

7 is a longitudinal sectional view of a conventional solenoid valve.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

1 is a longitudinal cross-sectional view of the initial state of the solenoid valve according to the present invention, Figure 2 is a cross-sectional view taken along the line AA of Figure 1, Figure 5 is a longitudinal cross-sectional view of the operation of the return prevention lever of the solenoid valve according to the present invention, 6 is a cross-sectional view showing that the solenoid valve according to the present invention is operated by using a manual control lever, and the valve body 6 having the inlet port 2 and the outlet port 4 is formed between the inlet port 2 and the outlet port 4. The diaphragm 8 which opens and closes is provided.

Between the inlet port 2 and the outlet port 4, the partition wall 10 on which the diaphragm 8 is seated is formed integrally with the valve body 6, and a passage through which fluid flows above the partition wall 10 ( 12) is provided.

In order to allow the diaphragm 8 to substantially open and close the passage 12 to move up and down, a space portion 14 is formed in the upper portion where the diaphragm 10 is installed, and a pilot flow path 16 is formed in the space portion 14. It is connected to the inlet (2).

The space portion 14 to which the pilot flow passage 16 is connected is connected to a passage 12 through which one side of the fluid flows, and the other side of the passage 12 is formed in an upper space 18 in which the diaphragm 8 is installed. Connected.

The bottom center of the space 18 has a structure having a protrusion 20 protruding upward.

The protrusion 20 is provided with a hole 22 for discharging the fluid introduced into the space 18, the hole 22 is kept airtight with the plug 26 is fixed to the cover 24 It is connected to the connected drainage path 28, the drainage path 28 is connected to the outlet 30 is in communication with the outlet (4).

In addition, an opening and closing member 32 capable of discharging or blocking a fluid in a form of surface contact with an upper end of the hole 22 is coupled to the lower end of the plunger 34.

The opening and closing member 32 is more preferably provided with a material that can adequately block the entrance of the hole 22 to have a suitable elasticity.

The plunger 34 has a fixed iron core 38 positioned above the inner central portion via the elastic member 36, and the coil 40 is wound around the outer circumferential surface of the fixed iron core 38.

Substantially capable of opening and closing the valve, the plunger 34 is operated by the operation, this operation is applied to the coil 40, the plunger 34 is driven by the electromagnetic force generated in the coil 40 The guide 44 is linearly moved, and at this time, the opening and closing member 32 coupled with the plunger 34 moves together to open or block the hole 22 connected to the drainage path 28.

The plunger 34 is accommodated in the plunger housing 42, the fixed iron core 38 is connected to the rod 46 continuous in the longitudinal direction to the upper surface of the cap 50 by the fixing member 48 It is fixed.

The return preventing lever 52 for maintaining the plunger 34 is fixed to the cover 24 by the fixing member 54 even when the power is cut off when the valve is used under the plunger 34.

As shown in FIGS. 3A and 3B, the return preventing lever 52 is inserted into the fixing member 54 to move in the horizontal direction as seen in the drawing, and the operating rod 56 56 is integrally formed with a holding part 58 to prevent the return of the plunger in case of power failure, and has a protruding protrusion 60 and a handle 62 formed outside of the fixing member 54. do.

The protrusion 60 is formed integrally with the operation rod 56, and the elastic member 64 is elastically installed between the protrusion 60 and the fixing member 54.

In the present invention, the protrusion 60 and the handle 62 are formed integrally with the operation rod 56, but are not limited thereto, and may be manufactured and attached separately.

As shown in FIG. 3A, the return preventing lever 52 of the structure has an end portion of the retaining portion 58 formed on the operating rod 56 at the beginning of the state where the power is not applied to the elastic member 64. (34) It is in surface contact with the lower side surface.

When power is applied to the coil 40 in this state, as shown in FIG. 3B, the plunger 34 is lifted by the magnetic force and the holding part is supported by the force of the elastic member 64 elastically installed on the return preventing lever 52. 58 is kept under the plunger 34 to maintain the open state of the valve even if the power is cut off.

In order to block the flow of the fluid, when the handle 62 formed on the return preventing lever 52 is pulled out, the plunger 34 is returned by the elasticity of the elastic member 36 installed in the plunger 34, and the diaphragm 8 This closes the flow of fluid.

In addition, the manual control lever 66 is formed in the orthogonal direction in which the return preventing lever 52 is installed so that the valve can be easily opened and closed in case of failure or emergency of the solenoid valve. Is installed.

As shown in FIG. 4, the manual control lever 66 forms a part in contact with the bottom of the plunger 34 with a semicircular curved surface 70, and the opposite surface has a structure composed of a plane 72. Have

The manual control lever 66 having such a structure is normally located while the plane 72 keeps airtight with the space 18 formed at the bottom of the plunger 34, and when the solenoid valve drive failure or emergency is shown in FIG. Similarly, when rotated 180 ° using a rotatable tool such as a screwdriver, the curved surface 70 raises the plunger 34 to open the hole 22 connected to the space 18 to the outlet 4 side. Allow fluid to flow.

In order to block the flow of fluid, when the manual control lever 66 is rotated to its original position, the plunger 34 is returned by the force of the elastic member 36 elastically installed on the plunger 34, and the diaphragm is operated by the fluid pressure. (8) is closed to stop the flow of the fluid.

The solenoid valve having a manual opening and closing function of the present invention configured as described above is a state in which power is not normally applied to the coil 40, and the plunger 34 is lowered by the elastic member 36 as shown in FIG. In the state of blocking the hole 22, the fluid flowing into the inlet (2) is introduced into the space 14 to press the diaphragm (8) downward with the fluid pressure inlet (2) and outlet (4) It is kept in a blocked state by the diaphragm 8 therebetween.

At this time, the fluid introduced into the space 14 is introduced into the space 18 formed at the lower end of the plunger 34 through the passage 12, and the fluid introduced into the space 18 is formed in the plunger 34. Since the opening / closing member 32 blocks the hole 22, the opening / closing member 32 does not come out to the outlet 4 side and is in a state of being equipped.

When power is applied to the coil 40 in such a state, as shown in FIG. 5, the plunger 34 is raised by the magnetic force, thereby opening the blocked hole 22 to open the bottom surface of the plunger 34. The fluid contained in the space 18 formed at the side is discharged to the outlet port 4 side through the outlet port 30 through the drain passage 28.

Accordingly, the space portion 14 has a space 18 and a hole 22 formed at the lower end of the passage 12 and the plunger 34 and connected to the outlet port 30 through the drainage path 28 to connect the outlet port 4 with the outlet port 4. Since the pressure of the space portion 14 decreases, the diaphragm 8 rises due to the fluid pressure supplied to the inlet port 2 so that the inlet port 2 and the outlet port 4 communicate with each other so that the fluid flows into the inlet port 2. ) To the outlet 4 side.

At this time, the holding part 58 formed in the return preventing lever 52 enters under the plunger 34 to maintain the open state even when the power supplied to the coil 40 is cut off.

In addition, in order to block the flow of the fluid, when the handle 62 formed on the return preventing lever 52 is pulled out, the plunger 34 is returned to the elasticity of the elastic member 36 installed in the plunger 34 so that the diaphragm 8 This closes the flow of fluid.

Therefore, as opposed to moving the diaphragm 8 to the open position, the plunger 34 is moved downwards as seen in the drawing while the repulsive force is generated.

When the solenoid valve drive part breaks down or in an emergency, as shown in FIG. 6, when the manual override lever 66 is rotated 180 °, the semicircular curved surface 70 formed on one side of the manual override lever 66 is plunger 34. ) And vertically move the opening and closing member 32 coupled to each other to open the hole 22 connected to the space 18 at the bottom of the plunger 34.

When the fluid contained in the space 18 exits through the hole 22 to the outlet 30 connected to the drainage passage 28, a difference in the fluid pressure occurs between the space portion 14 and the outlet port 4. (8) rises and the fluid can flow.

In order to block the flow of the fluid, when the manual operation lever 66 is rotated and returned to its original position, the plunger 34 is returned by the force of the elastic member 36 resiliently installed on the plunger 34. The same opposite fluid pressure is generated and the diaphragm 8 is closed to stop the flow of the fluid.

As described above, the solenoid valve provided with the return prevention function and the manual opening / closing function according to the present invention can maintain the return preventing lever even when the power is cut off while the valve is open, There is a manual operation lever for manual operation to open and close the valve simply by manual operation, it is possible to reduce the installation cost because there is no need to provide a separate line for flowing fluid when the solenoid valve failure.

Claims (3)

A valve body having an inlet and an outlet formed therein, a diaphragm installed inside the valve body to open and close between the inlet and the outlet, a manual operation lever installed at an upper side of the valve body, and an electromagnetic force generated by the coil. A solenoid valve having a reversal prevention function and a manual opening / closing function including a linearly moving plunger, an elastic member that resists movement of the plunger, and a holding means for holding the plunger. The solenoid valve according to claim 1, wherein the holding means comprises a return preventing lever. The method of claim 1, wherein the manual opening and closing function is a sphere having one side has a large diameter from the center Solenoid valve with a return prevention function and a manual opening and closing function characterized in that formed in the jaw and the opposite side is made of a flat.