The valve valve type


F16K11/24 - with an electromagnetically-operated valve, e.g. for washing machines

 

The valve is designed for changing the direction of gas flow in two or more pneumatic lines. The way valve 4-way 2-position with four locking elements type valve-seat is made in the form of two parallel spring-loaded valves that are connected through a system of pneumatic lines with oral feeding, the atmosphere and the cavity of the actuator and controlled by electric signals to the electromagnet through the rocker, potatoe two springs to any of the valves, it used an electromagnet with locking elements in the core management due to reallocation of pneumopathy used in the valve of the second cascade control, made in the form of a spring-loaded pneumatic piston mounted therein a plunger acting on the rocker. The technical result - the reduction of energy consumption. 1 Il.

The present invention relates to pneumatic devices, which are designed to change the direction of the gas streams in two or more pneumatic lines, depending on the external control.

Known pneumatic with different types of UE is nick, with a flat slide valve, crane, and others (see the book E. C. Herz "Pneumatic devices and systems in mechanical engineering", Moscow, Mashinostroyeniye, 1981, page 79, page 82, Fig.4.3).

The closest in technical essence is the valve valve type device "rocker" (U.S. Pat. 32417, "Yugoslavia"), consisting of an electromagnet, the core of which is mounted the plunger alternately pressing when applying electrical signals to the electromagnet on one, then on the other shoulder of the rocker arm, thereby activating the clamping action of the spring beam and engaged in total control of two valves that distribute the flow of gas through the pneumatic lines.

One of the main advantages of this valve is the absence of significant mechanical friction in the valve, which is especially important in low temperature environments that require a high reliability of operation of the valve.

The disadvantage of this valve is the large volume and the consumed electric power of the power of an electromagnet, through which the plunger built into the core, rocker switches from one position to the cost of the valve as a whole.

The technical object of the present invention is to remedy these disadvantages.

The problem is solved in that 4-way, 2-position with four locking elements type valve-seat is made in the form of two parallel spring-loaded valves that are connected through a system of pneumatic lines with oral feeding, the atmosphere and the cavity of the actuator and controlled by an electric signal applied to the electromagnet through the rocker, potatoe two springs to any one valve includes a solenoid with locking elements in the core management due to reallocation of pneumopathy used in the second cascade control, made in the form of a spring-loaded pneumatic piston with fixed therein by the plunger, acting on the rocker.

The essence of the invention is illustrated in the drawing, which shows a General diagram of the valve.

The valve includes a housing 1, in the bores which are the valves 2, centered by springs 3 relative to the seat 4 and 5, the overlapping channels 6 or 7 seats 4 and 5, respectively. Through the cavity 8 in the cover 9 to the channels 7 is fed to the gas pressure, and I with the atmosphere. The valves 2 are controlled by the rocker 14, preloaded springs 15, which is provided from one fixed position to another by means of the pusher 16, associated with the piston 17 through the axis 18 of rotation of the pusher and retainer spring 19. The piston 17 is located in the housing 20 has a bottom (in the figure) from the side of the cavity 21, is constantly connected with the atmosphere, a return spring 22, the top (in the figure) - the cavity 23 that is connected through the channels 24 with the control cavity 25, which is screwed into the electromagnet 26 core 27 that contains two spring-loaded locking element 28 and 29, are able to block the channels 30 and 31, respectively, to the latter of which is preloaded locking element 29 of the core 27 (according to the drawing) by a spring 32. In addition, the control cavity 25 is communicated through the channels 33 in the core 27, overlapping the channel 30 in the electromagnet 26 with the atmosphere and through the overlapping channel 31 and pneumonia 34 in the housing 20 with the gas pressure.

The operation of the valve is as follows.

When applying an electric signal to the electromagnet 26, the core 27 is moved upward (in the figure), overlapping the locking element 28 and channel 30 and opening the channel 31. Gas pressure from the pneumatic line 34 through the open channel 31, Aprilia spring 22. The plunger 16, moving together with the piston 17, reaches up to touch the middle of the shoulder arm 14 and, turning about the axis 18 in the piston 17 slides on the surface of the rocker arm 14 to its depression, after which it starts to move the arm 14 against the force of springs 15. Then the spring 15 after passing through the vertical (figure) position change the sign of the moment acting on the arm 14, which ultimately relates to the sphere of the left (in the figure) of the valve 2 and by means of the spring 15 presses the valve 2 to the saddle 5, way pneumonia 12 to the actuator through the valve 6, pneumonia 10 and silencers 11 is connected with the atmosphere and clipped through the overlapped channel 7 from the gas pressure in the cavity 8 of the cover 9. Right (in the figure) channel 2 by means of a spring 3 and the gas pressure is pressed against the valve seat 4 by cutting band pneumonia 13 to the actuator through the overlapped channel 6 from the atmosphere and connecting it through the channel 7 with the gas pressure in the cavity 8 of the cover 9. After removing the electrical signal from the electromagnet 26 core 27 under the action of the spring 32 moves downward (in the figure), overlapping the locking element 29 channel 31 and opening the channel 30. The cavity 23 through the channels 24, the control cavity 25, the channels 33 in the core 27 and the channel top (in the figure) position. When you re applying an electric signal to the electromagnet 26, the arm 14 is moved in the other extreme position, acting to the right (in the figure) of the valve 2, the connecting band pneumonia 13 through the channel 6, pneumonia 10 and silencers 11 with the atmosphere and pulling her through the overlapped channel 7 from the gas pressure in the cavity 8 of the cover 9. Left (in the figure) of the valve 2 connects deep pneumonia 12 through the channel 7 with the gas pressure in the cavity 8 of the cover 9 and detaches it through the overlapped channel 6 from the atmosphere.

Claims

The valve valve type 4-way, 2-position with four locking elements type valve-seat is made in the form of two parallel spring-loaded valves that are connected through a system of pneumatic lines with oral feeding, the atmosphere and the cavity of the actuator, and managed electrical signals to the electromagnet through the rocker, potatoe two springs to any of the valves, characterized in that it uses an electromagnet with locking elements in the core management due to reallocation of pneumopathy used in the valve of the second cascade control, vaparaiso.

 

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FIELD: mechanics.

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EFFECT: simplification of design, higher reliability.

4 dwg

FIELD: machine building.

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EFFECT: higher reliability.

2 dwg

FIELD: instrument engineering.

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EFFECT: high leak tightness, handling ease and ease of fabrication; high reliability and maintainability.

9 dwg

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10 cl, 16 dwg

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EFFECT: higher reliability.

4 cl, 10 dwg

FIELD: machine building.

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EFFECT: higher reliability.

7 cl, 9 dwg

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