KR20000050603A - Air ejector system for increasing vacuum degree - Google Patents

Abstract

PURPOSE: An air eject device for increasing the degree of vacuum is provided to maintain a sufficient degree of vacuum by installing a simple are eject device and reduce the noises which are generated by the cavitation. CONSTITUTION: An air eject device comprises a first control valve(20), first and second solenoid valves(32,34), a vacuuming pump(40), a check valve(50), a separation tank(90), a drain valve(92), a bypass valve(60), an overflower-conduit(70), and an air eject device. One end of the air eject device(80) is connected to the upper side of the check valve(50) and the other end of the air eject device(80) is connected to an input connecting member. The air eject device(80) maintains the degree of vacuum even when the pressure of the vacuum pump(40) is under the vapor pressure.

Description

Air ejector system for increasing vacuum degree

The present invention relates to an air ejector (AIR EJECTOR) device, and in particular to provide an air ejector device for increasing the degree of vacuum that can sufficiently maintain the degree of vacuum even below the vapor pressure.

In general, many researches have been conducted to maintain and manage higher vacuum levels in many factories, such as food processing, but it is difficult to improve the quality of the product because it does not maintain sufficient vacuum level under the vapor pressure in the case of substantially moisture products. There was this.

Therefore, while solving the above problems, a lot of additional equipment investment is required to maintain a high degree of vacuum, there are many problems in practical use in the field.

The present invention is to solve the conventional problems as described above, and to provide an air ejector device for increasing the degree of vacuum that can maintain a sufficient degree of vacuum even under the vapor pressure without a separate additional device.

Air ejector device for increasing the degree of vacuum of the present invention for achieving the above object, the first control valve is installed in the pipe connected to the bottom of the input connection member to control the gas flowing through the pipe, and First and second solenoid valve (solenoid valve) for controlling the input of, and the vacuum pump is connected to the first solenoid valve and the second solenoid valve and the gas input through the first control valve to make a vacuum and then output A check valve disposed between the first control valve and the vacuum pump to control the flow of gas, and a separation tank disposed above the vacuum pump to perform a separation operation. ), A drain valve disposed under the separation tank to discharge water stored in the separation tank to the outside, and when the water stored in the separation tank is above a certain level, Bypass valve to bypass and overflow to the outside when the water stored in the separation tank is above a certain level War pipe and one end is connected to the upper side of the check valve and the other end is connected to the input connecting member is characterized in that the air ejection device which can maintain the degree of vacuum even when the pressure of the vacuum pump is below the vapor pressure .

1 is a front view of an air ejector apparatus for increasing the degree of vacuum of the present invention,

2 is a side view of the air ejector apparatus for increasing the degree of vacuum of the present invention,

3 is a cross-sectional view of the air ejector apparatus.

<Explanation of the code | symbol about the main partial example of drawing>

10: input connection member 20: first control valve

22: second control valve 32: first solenoid valve

34: second solenoid valve 40: vacuum pump

42 pump connection member 44 support

50: check valve 60: bypass valve

70: overflow piping 80: air ejection device

82: bottom flange portion 84: nozzle portion

85: fastening means 86: upper air eject

87: air suction member 88: taper

89: upper flange portion 90: separation tank

Hereinafter, the above-described contents will be described in detail through the embodiments of the present invention.

1 is a front view of an air ejector apparatus for increasing the degree of vacuum of the present invention, the input control member 10 through which gas is input, and the first control valve for controlling the gas input through the input connection member 10 ( 20) with water A first solenoid valve 32 for controlling the amount of the inflow, a second solenoid valve 34 installed in parallel with the first solenoid valve 32 to control the flow of water, and the first A vacuum pump 40 connected to the solenoid valve 32 and the second solenoid valve 34 to receive water output from the first solenoid valve 32 and the second solenoid valve 34 to generate a vacuum; A check valve 50 disposed between the first control valve 20 and the vacuum pump 40 to control the flow of gas, and disposed above the vacuum pump 40 to separate the separator ( Separation tank 90 for separation operation and a drain valve 92 disposed below the separation tank 90 so as to discharge water stored in the separation tank 90 to the outside. ) And water stored in the separation tank 90 A bypass valve 60 for bypassing a predetermined water level or more, an overflow pipe 70 for flowing out to the outside when water stored in the separation tank 90 exceeds a predetermined water level, and once It is connected to the upper side of the check valve 50 and the other end is connected to the input connecting member 10 is composed of an air ejection device 80 that can maintain the degree of vacuum even when the pressure of the vacuum pump 40 is below the vapor pressure It is.

And the pump connection member 42 is connected to one side of the vacuum pump 40, as shown in Figure 2, a plurality of fastening not shown to connect the vacuum pump 40 and the separation tank 90 It is bound by a means.

In addition, a second control valve 22 disposed on the upper side of the air ejection device 80 and opened and closed so that air is input from the outside so as to maintain a sufficient degree of vacuum when it is below the vapor pressure is provided.

And the air ejection device 80 is installed in the suction line of the water-sealed vacuum pump, as shown in Figure 3 by suctioning the outside air in the air by the suction power of the vacuum pump, by lowering the sealing liquid below the steam pressure to improve the degree of vacuum As a device capable of being connected, the bottom flange portion 82 and the bottom flange portion 82 are formed in an annular flange shape so as to be connected to an upper side of the check valve 50, and a plurality of through holes are formed on the outer circumferential surface thereof. It is connected to the upper side of the nozzle portion 84 is formed to increase the inner diameter at a certain point as the inner diameter is narrowed to the upward and fastening by a plurality of fastening means 85 on the upper side of the nozzle portion 84 The upper air ejection 86 and the air suction formed to protrude in the upper air ejection 86 to coincide with the central portion of the nozzle portion 84 Upper flange portion formed in the upper portion of the member 87 and the air intake member 87, the plurality of through-holes are formed in the outer peripheral surface of the annular flange shape so as to engage with the second control valve 22 And (89).

The tapered portion is formed at the inner center of the air suction member 87 and is lowered below the vapor pressure to decrease the efficiency of the vacuum degree of the vacuum pump 40 so that the air input from the second control valve 22 penetrates. 88 is formed.

Reference numeral 44 is a support for supporting the air ejector device to increase the degree of vacuum of the present invention.

Referring to the accompanying drawings, the action and effect on the air ejector device for increasing the degree of vacuum of the present invention described above are as follows.

When steam is first introduced from the outside to the input connecting member 10 shown in FIG. 1 from the outside, the steam inputted to the input connecting member 10 passes through the open state of the first control valve 20. It is input to the check valve 50.

In this way, the steam input to the check valve 50 is input to the vacuum pump 40 driven by the application of external power.

Water from outside ) Is input to pass through the first solenoid valve 32 and the second solenoid valve 34 to the vacuum pump 40. Then, the vacuum pump 40 converts the steam input from the check valve 50 into a vacuum and discharges it to the outside through the separation tank 90 disposed on the upper side of the vacuum pump 40.

If there is a lot of water stored below the separation tank 90 so that the water level is higher than a predetermined level, the first solenoid valve may be provided through a bypass valve 60 installed outside the separation tank 90. 32 is connected to the rear end, and when the water level is higher than the water level is naturally discharged to the outside through the overflow pipe (70).

However, when the vacuum pump 40 operates to a certain degree to maintain the vapor pressure or less, the first control valve 20 is closed and the second control valve 22 located above the air ejection device 80 is closed. When opened, air is input to the air ejection apparatus 80 from the outside through the second control valve 22.

As such, when external air is input through the second control valve 22, steam input through the input connecting member 10 causes vortices in the input connecting member 10 to block input. do.

Then, the air passing through the second control valve 22 is input to the upper air eject 86 through the penetrated center portion of the tapered portion 88 formed to protrude from the air suction member 87, and then the Through the nozzle portion 84 disposed below the upper air eject 86, that is, the diameter of the nozzle portion 84 gradually decreases toward the lower side, and gradually increases at the center portion, thereby inputting to the vacuum pump 40. The air can maintain a high degree of vacuum.

As described above, the specifications of the air ejection apparatus 80 described above are variously classified according to the specifications of the product, for example, 17 of JHRP 2 stage (2.3 * 10 pa) When the air ejection device 80 is installed in a torr model, the vacuum can be reduced to 6 torr (0.8 * 10 pa) under the increased pressure, and our JDRP 1st stage (3 * 10pa) 22.5 torr model If it is attached to the vacuum pressure can be maintained below the vapor pressure (1.1 * 10pa).

The air ejector device for increasing the degree of vacuum of the present invention configured as described above, by installing a simple air ejection device without a separate device, maintains sufficient vacuum degree, the inlet pressure of the vacuum pump is lowered by installing the air ejection device, the cavitation It is an invention that can improve the product quality and productivity by providing a pleasant environment by reducing the noise caused by (cabitation).

Claims (2)

First control valve 20 for controlling the gas flowing into the input connecting member 10, and water First and second solenoid valves 32 and 34 to control the input of the first and second solenoid valves 32 and 34 and the first solenoid valve 34 and the first control valve 20 A check valve for controlling the flow of the gas is disposed between the vacuum pump 40 and the first control valve 20 and the vacuum pump 40 to make a gas input through the vacuum and output ( 50, a separation tank 90 disposed above the vacuum pump 40 to perform a separation operation, and disposed below the separation tank 90 to separate the separation. A drain valve 92 for discharging the water stored in the tank 90 to the outside, and a bypass valve 60 for bypassing the water stored in the separation tank 90 when the water is above a certain level. ) And water stored in the separation tank 90 In case of abnormality, the overflow pipe 70 flowing out to the outside and one end is connected to the upper side of the check valve 50 and the other end is connected to the input connection member 10 so that the pressure of the vacuum pump 40 is less than or equal to the vapor pressure. Air ejector device to increase the degree of vacuum, characterized in that it is composed of an air ejection device (80) that can maintain the degree of vacuum. According to claim 1, The air ejection device 80 has an annular flange shape and the bottom flange portion 82 is formed with a plurality of through holes in the outer peripheral surface, and the upper side of the bottom flange portion 82 Connected and the nozzle portion 84 is formed so that the inner diameter is narrowed to increase upward and the inner diameter is increased again, and the upper air ejection is fastened by a plurality of fastening means 85 on the upper side of the nozzle portion 84 ( 86, an air suction member 87 formed to protrude inside the upper air eject 86 so that the nozzle unit 84 and a center coincide with each other, and an upper side of the air suction member 87; In order to increase the degree of vacuum, characterized in that the upper flange portion 89 is formed in the annular flange shape so as to engage with the second control valve 22, a plurality of through holes are formed on the outer peripheral surface thereof. Air ejector device.