KR101993689B1 - Blow off valve - Google Patents

Abstract

The present invention provides a blow-off valve which does not generate opening and closing errors even though the valve is frequently opened and closed. According to an embodiment of the present invention, the blow-off valve comprises an outer body and an inner body. The inner body is formed in the outer body, and a space unit (V) is formed between the outer body and the inner body. A void unit (VV) is formed in the inner body, and a discharge port is formed on one side of the outer body. A connection port is formed on the lower side and/or the other side of the outer body. The discharge port (111) is connected to the space unit (V). The connection port (121, 122) includes: a body (100) connected to the void unit (VV) of the inner body; a cover (200) sealing the upper part of the body; a diaphragm (300) interposed between the body and the cover; an upper washer (310) and a bottom washer (320), connected to the upper side and the lower side of the diaphragm; a guide bolt (330) and a guide nut (340), connecting the upper washer and the bottom washer to the diaphragm; and a spring (400) installed between the cover and the upper washer. A through hole (333) is formed in the longitudinal direction in the guide bolt, and a fluid of the void unit (VV) flows to the space formed between the diaphragm (300) and the cover (200) through the through hole (333) of the guide bolt.

Description

Blow off valve {BLOW OFF VALVE}

The present invention relates to a blow off valve for controlling the flow of a fluid.

Blow-off valves are used for venting, shutting off and regulating pressure in the compressor. The blue rain off valve may be installed to release air to the outside when the air pressure in the conduit increases, and may be installed to release the air to the outside until a certain level is reached when the air pressure in the conduit is below a certain level. have.

No. 10-1295734 of the wind blower discharges the air having a strong pressure. Specifically, the three-way valve of the wind valve shuts off the pressure air from the pressure inflow space, and makes the pressure counter space at atmospheric pressure. At this time, the pressure air in the pressure inlet space pushes the diaphragm down and releases it to the windbreak space and discharges it through the windbreak hole.

The blower valve for turbo blower of Korean Patent Publication No. 10-0861248 discharges the air in the discharge pipe to the outside when the operation of the turbo blower does not reach the normal state at the beginning or the stop of operation. In the wind valve of the prior art document, a rubber diaphragm is installed on the upper portion of the shaft, and the process of repeating the diaphragm contracting or restoring to the valve cover side during the windbreak operation is repeated.

Korean Patent Application Laid-Open No. 10-2013-0024342, A turbo exhaust apparatus for rapid exhaust Patent No. 10-1651589, Non-Oval Valve Using Differential Pressure of Air Japanese Laid-Open Patent Publication No. 2012-073767, Valve device Japanese Laid-Open Patent Publication No. 2007-519873, Fluid Control Device Insect valve of Patent No. 10-1295734

It is an object of the present invention to provide a blowoff valve which does not open or close even in frequent opening and closing operation of the valve.

In addition, an object of the present invention is to provide a blow-off valve that can ensure a long life even in frequent opening and closing of the valve.

The problem to be solved of the present invention is not limited to the aforementioned problem. Other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Blow-off valve according to an embodiment of the present invention is composed of the outer body and the inner body, the inner body is formed inside the outer body, the space portion (V) is formed between the outer body and the inner body, A cavity VV is formed in the inner body, a discharge hole is formed at one side of the outer body, and a communication hole is formed at the lower side and / or the other side of the outer body, and the discharge hole 111 is a space part ( V) and the communication port (121, 122) is a body 100 configured to communicate with the cavity (VV) of the inner body, a cover 200 for sealing the upper portion of the body, and the body and A diaphragm 300 interposed between the cover, an upper washer 310 and a bottom washer 320 coupled to the upper and lower sides of the diaphragm, a guide bolt 330 that couples the upper washer and the bottom washer to the diaphragm, and Guide nut 340 and the beaker And a spring 400 provided between the upper washer.

According to an embodiment, the diaphragm 300 according to the present invention comprises a central portion 301, an edge portion 303, and an inclined portion 302 formed between the central portion and the edge portion, and the inclined portion 302 ) Is formed to be inclined downward from the edge portion to the center portion, and the center portion, the slope portion, and the edge portion are integrally made of a flexible material.

The guide bolt 330 according to the present invention is formed with a through hole 333 in the longitudinal direction, the fluid of the cavity (VV) between the diaphragm 300 and the cover 200 through the through hole 333 of the guide bolt. Move to the space formed in.

According to the present invention, a through hole is formed in the guide bolt. Although the through hole may be installed on the inclined portion of the diaphragm, when the through hole is installed on the inclined portion, the through hole may be eventually damaged due to repeated air flow, and the diaphragm having the through hole may be damaged. Furthermore, when the diaphragm is small in diameter, physical fatigue may be low. However, when the diaphragm is in large diameter, the elastic force may be significantly lower than the region where the through hole is installed, compared to the region where the through hole is not installed. In the present invention, the through-hole is formed in the longitudinal center of the guide bolt, so that the diaphragm having a large diameter can maintain the elastic force of the diaphragm for a long time.

1 is a perspective view of a blow off valve according to the present invention.
2 is a perspective view of a body of a blow off valve according to the present invention.
3 is an exploded perspective view of the blow-off valve according to the present invention.
4 is a perspective view of an upper washer according to the present invention;
5 is a perspective view of a guide bolt according to the present invention.
6 is a perspective view of a bottom washer according to the present invention.
Figure 7 is a side view showing the diaphragm and the inner body to which the upper washer and bottom washer according to the present invention.
8 is a view for explaining the flow of fluid in the blow-off valve according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, a fluid may be a gas or a liquid having a predetermined pressure.

1 is a perspective view of a blow off valve according to the present invention, FIG. 2 is a perspective view of a body of a blow off valve according to the present invention, and FIG. 3 is an exploded perspective view of the blow off valve according to the present invention.

Blow off valve according to the invention is coupled to the body 100, the cover 200 for sealing the upper portion of the body, the diaphragm 300 is coupled between the body and the cover, and the upper and lower sides of the diaphragm Upper washer 310 and bottom washer 320, guide bolt 330 and guide nut 340 for coupling the upper washer and bottom washer to the diaphragm, and a spring 400 provided between the cover and the upper washer. It includes.

The body 100 of the blow-off valve according to an embodiment of the present invention consists of an outer body 110 and an inner body 120, the inner body is provided inside the outer body. Discharge port 111 is provided on one side of the outer body, the communication hole is formed on the lower side and the other side of the outer body. More specifically, the first communication port 121 is formed below the outer body, and the second communication port 122 is provided on the other side of the outer body. In the present invention, the first communication port and the second communication port is formed as an embodiment, but only one of the first communication port and the second communication port can be formed. In this case, the diaphragm can be used as a valve for opening and closing the fluid.

Referring to the drawings, a space V is formed between the outer body and the inner body, and the cavity VV is formed in the inner body. The discharge port 111 communicates with the space portion V, and the first and second communication ports 121 and 122 communicate with the cavity VV of the inner body.

Meanwhile, an outer body flange 110-FG is formed on the outer body. The flange of the outer body is formed with a plurality of screw holes at regular intervals along the circumference. And the flange (110-FG) of the outer body and the upper end (120-T) of the inner body are all circular, the upper end of the inner body is formed lower than the flange of the outer body.

The cover 200 is coupled to the flange 110 -FG of the outer body. A cover flange 200 -FG is formed at an edge of the cover, and a protrusion hole 201 is formed at the center of the cover. The cover flange has a through hole corresponding to a screw hole formed in the flange of the outer body, and a diaphragm to be described later is disposed between the body and the cover, the cover is positioned corresponding to the outer body, and then firmly coupled using a screw. Can be.

The diaphragm 300 is interposed between the body 100 and the cover 200. The diaphragm 300 includes a central portion 301, an edge portion 303, and an inclined portion 302 formed between the central portion and the edge portion. The inclined portion of the diaphragm is formed to be inclined downward from the edge portion toward the center portion. The central portion, the inclined portion, and the edge portion are all circular and made integral.

The diaphragm is formed of a flexible material such as rubber or the like. Accordingly, the diaphragm may be pushed upward by the pressure of the fluid applied from the lower side and restored when the pressure of the fluid is not applied. When no pressure of the fluid from the lower side is applied, the inclined portion of the diaphragm is located between the flange 110-FG of the outer body and the upper end 120-T of the inner body, and the center portion 301 of the diaphragm is Closing the upper end 120-T of the inner body.

Referring to FIG. 3, an upper washer 310 is coupled to an upper side of the diaphragm 300, and a bottom washer 320 is coupled to a lower side of the diaphragm. Holes are formed in the centers of the upper washer 310, the diaphragm 300, and the bottom washer 320, respectively. The guide bolt 330 is inserted into the hole from the lower side to the upper side, and the upper washer 310, the diaphragm 300, and the bottom washer 320 are integrally coupled by the fastening of the guide bolt 330 and the nut 340. do.

The opening and closing of the flexible diaphragm can be achieved by fastening the upper and lower diaphragms between the upper washer and the bottom washer.

Figure 4 is a perspective view of the upper washer according to the present invention, Figure 5 is a perspective view of the guide bolt according to the present invention, Figure 6 is a perspective view of the bottom washer according to the present invention.

As shown in FIG. 4, the center of the upper washer 310 has a hole 310 -H (hole) through which the guide bolt 330 is fitted, and the protrusion 311 is formed at the edge of the upper washer 310. have. The protrusion 311 is formed to have the same slope as that of the inclined portion at the boundary between the central portion 301 and the inclined portion 302 of the diaphragm, and the inclined portion of the diaphragm prevents bending at the boundary portion.

Figure 5 shows a guide bolt according to the present invention, a flat portion 331 is formed on the side of the head of the guide bolt 330. The flat part 331 is inserted into the flow preventing groove 321 of the bottom washer 320 to be described later to prevent the guide bolt from flowing from the bottom washer.

In addition, the through hole 333 is formed in the guide bolt 330 in the longitudinal direction. The through hole 333 serves as a passage through which the fluid in the cavity VV and the fluid in the space formed between the diaphragm and the cover can move.

On the other hand, the through hole may be installed on the inclined portion of the diaphragm, but when the through hole is installed on the inclined portion, physical fatigue accumulates in the place where the through hole is formed by the fluid moving through the through hole, and eventually the through hole may be damaged. Can be. Such physical fatigue may occur due to the diaphragm being made of a flexible material such as rubber or the like, and the through hole may be deteriorated or the elastic force of the inclined portion may be reduced. In addition, when the diaphragm is small in diameter, physical fatigue may be small. However, when the diaphragm is in large diameter, the elastic force may be significantly lower than the region where the through hole is installed, compared to the region without the through hole.

In the present invention, the through-hole is formed in the center of the guide bolt in the longitudinal direction, so that the through-hole 333 can be a passage of air to improve the durability of such a diaphragm, even if the diaphragm having a large diameter, the elastic force of the diaphragm for a long time Can be maintained.

6 shows a bottom washer, the center of the bottom washer 320 is formed with a hole 320-H (hole) through which the guide bolt 330 is inserted, and the flow preventing groove 321 is formed in the peripheral region of the hole. Formed. As described above, the flow preventing groove 321 is fitted with the head of the guide bolt 310 to prevent the guide bolt from flowing from the bottom washer.

Referring to FIG. 7, the upper washer 310 according to the present invention is coupled to the upper side of the center portion 301 of the diaphragm, and the bottom washer 320 is coupled to the lower side of the center portion of the diaphragm. The bottom washer 320 is smaller than the diameter of the upper washer 310. The diameter of the bottom washer 320 is equal to or smaller than the inner diameter of the upper end 120 -T of the inner body 120, and the diameter of the upper washer 310 is equal to the outer diameter of the upper end 120 -T of the inner body 120. It may be the same or larger.

According to an embodiment, the bottom washer 320 is fitted to the upper end 120 -T of the inner body, and the upper washer 310 to close the diaphragm to the end of the inner body. Accordingly, the upper end of the inner body can be closed by an integrated upper washer, diaphragm, bottom washer.

The spring 400 is fitted between the cover 200 and the diaphragm 300. The spring 400 has a diaphragm to seal the upper end 120 -T of the inner body with the elastic force of the spring.

8 is a view for explaining the flow of fluid in the blow-off valve according to the present invention.

When a fluid having a predetermined pressure is formed in the cavity VV of the inner body, the fluid in the cavity VV may move to the space V according to the opening and closing of the diaphragm. Meanwhile, some fluid of the cavity VV moves to the solenoid valve through a space formed between the diaphragm 300 and the cover 200 through the through hole 333 of the guide bolt. The flow of the fluid flowing into the cavity VV may be controlled by the solenoid valve.

As mentioned above, although this invention was demonstrated in detail through the specific Example, this invention is not limited to the said Example, A various deformation | transformation is possible for a person with ordinary knowledge within the scope of the technical idea of this invention.

100: body
110: outer body
111: discharge port
110-FG: Flange of Outer Body
120: inner body
120-T: upper end of the inner body
121: first communication port
122: second communication port
200: cover
300: diaphragm
310: upper washer
320: bottom washer
330 guide bolt
340: Guide Nut
400: spring
V: space
VV: Joint

Claims (3)

An outer body and an inner body, the inner body is formed inside the outer body, a space V is formed between the outer body and the inner body, and a cavity VV is formed in the inner body. A discharge port is formed at one side of the outer body, and a communication hole is formed at a lower side and / or the other side of the outer body, and the discharge hole 111 is in communication with the space portion V. 122 is a body 100 is configured to communicate with the cavity (VV) of the inner body,
A cover 200 for sealing an upper portion of the body,
A diaphragm 300 interposed between the body and the cover;
An upper washer 310 and a bottom washer 320 coupled to an upper side and a lower side of the diaphragm,
A guide bolt 330 and a guide nut 340 for coupling the upper washer and the bottom washer to a diaphragm,
It comprises a spring 400 provided between the cover and the upper washer,
The diaphragm 300 includes a central portion 301, an edge portion 303, and an inclined portion 302 formed between the central portion and the edge portion, and the inclined portion 302 is downward from the edge portion to the center portion. Is formed to be inclined, the central portion, the inclined portion, the edge portion is made of a flexible material integrally,
The inclined portion of the diaphragm is located between the flange 110-FG of the outer body and the upper end 120-T of the inner body, and the central portion 301 of the diaphragm blocks the upper end 120-T of the inner body. Is configured to
A planar portion 331 is formed on the side of the head of the guide bolt 330, the through hole 333 is formed in the longitudinal direction,
The upper washer 310 is coupled to the upper side of the center portion 301 of the diaphragm, the bottom washer 320 is coupled to the lower side of the center portion of the diaphragm,
In the center of the upper washer 310, a hole 310-H (hole) through which the guide bolt 330 is fitted is formed, and a protrusion 311 is formed at an edge thereof, and the protrusion 311 has an inclined portion of the diaphragm. In order to prevent bending at the portion, it is formed to have the same slope as the slope of the inclined portion at the boundary between the central portion 301 and the inclined portion 302 of the diaphragm,
In the center of the bottom washer 320, a hole 320-H (hole) through which the guide bolt 330 is inserted is formed, and a flow preventing groove 321 is formed in the peripheral area of the hole, and the flow preventing groove 321 In order to prevent the guide bolt from flowing from the bottom washer, the flat portion 331 formed in the head of the guide bolt 310 is fitted,
The bottom washer is fitted to the upper end 120-T of the inner body, the upper washer closes the diaphragm to the end face of the inner body,
The bottom washer 320 is formed smaller than the diameter of the upper washer 310, the diameter of the bottom washer 320 is the same as the inner diameter of the upper end (120-T) of the inner body 120, the upper washer The diameter of the 310 is formed equal to or larger than the outer diameter of the upper end portion 120-T of the inner body,
The fluid of the cavity (VV) is blown through the through-hole 333 of the guide bolt to the space formed between the diaphragm (300) and the cover 200, characterized in that the blow-off valve.




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