JP2002172382A - Separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separator capable of discharging drain, flowing from suction piping, to the outside accompanied by the suction of a suction device, without stopping the operation of the suction device. SOLUTION: This separator is provided with a liquid storage chamber 22 for storing a prescribed drain, and a drain chamber 50 constituted in a manner that drain flowed from the liquid storage chamber 22 through a flowing-out passage 54 can be discharged from an outlet 74. The flowing-out passage 54 is provided with a first closing means 68 that releases the closing of the flowing-out passage 54 when the internal pressures of the liquid storage chamber 22 and the drain chamber 50 are adjusted to the same negative pressure by a first internal pressure control means 90, 92. The outlet 74 is provided with a second closing means 86 that releases the closing of the outlet 74 when the internal pressure of the drain chamber 50 is adjusted to the atmospheric pressure by a second internal pressure control means 94, 96. In such a constitution, when the storage amount of the drain in the drain storage chamber 22 reaches a prescribed amount, the first internal pressure control means 90, 92 regulates the internal pressures, and when the drain flows out from the liquid storage chamber 22, the second internal pressure control means 94, 96 regulates the internal pressures.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separator, and more particularly to a separator provided in the middle of a suction pipe connected to a suction device for separating air and liquid discharged through the suction pipe. It concerns an improved structure.

[0002]

2. Description of the Related Art Conventionally, among medical facilities such as operating rooms and medical offices of various hospitals, and various working facilities other than the medical field, many of the facilities that generate drainage due to work in the facilities are used. Is provided with a so-called drainage system for sucking the drainage through a predetermined pipe line and automatically discharging the drainage from the facility to the outside.

[0003] The discharge system generally includes a predetermined suction device, a suction pipe extending from the suction device, and a separator provided in the middle of the suction pipe. , The air and the waste liquid flowing through the pipe are separated by a separator, and the separated air is sent from the separator to the suction device while being separated. The discharged liquid is discharged to the outside through a discharge port provided in the separator.

[0004] As is well known, the separator provided in such a discharge system is provided with the discharge port, and the drain is allowed to flow through the suction pipe under the blockage of the discharge port. It has a storage tank for storing. In addition, in such a storage tank, a float that is floated in accordance with a rise in the liquid level due to an increase in the stored drainage is disposed inside the storage tank, and the storage amount of the drainage is set to a predetermined amount. When the float reaches the predetermined height, the float comes into contact with the float switch provided on the lid of the storage tank, and the float switch is turned on.
The operation of the suction device is stopped by the N operation. Then, under the state where the operation of the suction device is stopped, the discharge port is opened, and the drainage stored inside is configured to be discharged to the outside through the discharge port. is there.

[0005] That is, in the case of using the separator having the above-described structure, every time the discharged liquid stored in the storage tank reaches a predetermined amount, the discharged liquid is discharged to the outside.
The operation of the suction device had to be stopped one by one, and therefore, in such a conventional separator, it was not only inferior in usability but also made it impossible to continuously discharge the waste liquid. Therefore, there is a serious problem that the workability in the drainage work is remarkably reduced.

[0006]

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a suction pipe provided in the middle of a suction pipe extending from a predetermined suction device. In the separator for separating the air and the drainage that are circulated through the suction pipe, the drainage can be discharged to the outside without stopping the operation of the suction device, thereby improving the usability. It is another object of the present invention to provide a structure capable of effectively improving the workability in drainage discharging work.

[0007]

According to the present invention, in order to solve the above-described problem, the suction pipe is provided in the middle of a suction pipe extending from a predetermined suction apparatus, and is sucked by the suction apparatus to flow through the suction pipe. A separator that separates the separated air and drainage and sends out the separated air to the suction device, and discharges the separated drainage through an outlet to the outside. A communication port for communicating with the suction pipe, and a connection port to which the suction pipe is connected, and the internal pressure is made negative by the suction of the suction device through the communication port, thereby flowing through the suction pipe. A liquid storage chamber for allowing the air and the drainage to flow through the connection port, sending out the air from the communication port to the suction device, and storing the drainage;
(B) the drainage stored in the storage chamber is communicated with the storage chamber through an outflow passage through which the drainage flows out of the storage chamber, and the discharge port that discharges the drainage to the outside is provided. A drain chamber opened to the outside through the outlet, and (c) closing the outflow passage when the internal pressure of the liquid storage chamber is set to a negative pressure greater than the internal pressure of the drain chamber. First closing means, (d) second closing means for closing the discharge port when the internal pressure of the drain chamber is negative, and (e) the drain liquid in the liquid storage chamber. When the storage amount of the liquid storage chamber increases and reaches a predetermined amount, the internal pressures of the liquid storage chamber and the liquid drain chamber are adjusted so that the internal pressure of the liquid drain chamber becomes a negative pressure equal to the internal pressure of the liquid storage chamber. A first internal pressure adjusting means for adjusting; and (f) an inside of the drainage chamber which is set to the same negative pressure as the liquid storage chamber by the first internal pressure adjusting means. Includes a second internal pressure adjusting means for adjusting the internal pressure of the drainage chamber, so that the internal pressure of the drainage chamber is equal to the internal pressure of the liquid storage chamber by the first internal pressure adjusting means. By making the same negative pressure, the blockage of the outflow passage by the first blockage unit is released, while the internal pressure of the drainage chamber is set to the atmospheric pressure by the second internal pressure adjustment unit. The gist of the present invention is a separator characterized in that the blockage of the discharge port by the second blockage means is released.

That is, in the separator according to the present invention as described above, of the air and the waste liquid flowing into the liquid storage chamber, the air is sent out from the communication port to the suction device, while
The drainage is stored in the drainage chamber. When the amount of drainage stored in the liquid storage chamber reaches a predetermined amount, the internal pressure of the drainage chamber is set to a negative pressure equal to the internal pressure of the liquid storage chamber by the first internal pressure adjusting means. Accordingly, the blockage of the outflow path by the first closing means is released, and the drainage stored in the liquid storage chamber is caused to flow out to the drainage chamber independent of the liquid storage chamber through the outflow path. On the other hand, while the internal pressure of the drainage chamber into which the drainage has flowed from the storage chamber is kept at a negative pressure, the drainage port is closed by the second closing means, so that the drainage is discharged into the drainage chamber. The drained liquid is stored in the drain chamber. And
When the internal pressure of the drainage chamber is set to the atmospheric pressure by the second internal pressure adjusting means, the closing of the outlet by the second closing means is released, and the drainage stored in the drainage chamber is drained. It is designed to be discharged from the exit to the outside.

On the other hand, in the separator of the present invention, when the air and the drainage are caused to flow into the liquid storage chamber, the outflow passage is closed by the first closing means. When the drainage is allowed to flow from the chamber to the drainage chamber, the outflow passage is opened, but the discharge port of the drainage chamber is closed by the second closing means. The liquid storage chamber communicating with the suction device is not opened to the outside except for the suction pipe, and the negative pressure state in the liquid storage chamber is reliably maintained. Further, also when the drainage discharged from the storage chamber to the drainage chamber is discharged to the outside through the discharge port, the outflow path is closed by the first closing means, and the storage chamber becomes large. It is designed to be in a negative pressure state.

[0010] Therefore, in the separator according to the present invention, the discharged liquid flowing into the liquid storage chamber can be discharged into the liquid storage chamber without stopping the suction device communicating with the liquid storage chamber at all. Is discharged from the liquid storage chamber to the drainage chamber by an amount corresponding to the storage amount of the liquid, and further discharged to the outside through the discharge port of the drainage chamber.

Therefore, by using the separator according to the present invention as described above, excellent usability which cannot be obtained by the conventional separator which cannot discharge the waste liquid without stopping the suction device can be advantageously exhibited. Not only that, the drainage discharge operation can be performed continuously, so that the workability in the drainage discharge operation can be extremely effectively realized.

According to one preferred embodiment of the separator according to the present invention, the first internal pressure adjusting means includes a first communication passage for communicating the liquid storage chamber with the liquid discharge chamber. Opening the liquid when the amount of the drainage stored in the liquid storage chamber reaches the predetermined amount, and closing the liquid after a lapse of a predetermined time from the opening operation, whereby the first serial connection is performed. A first electromagnetic valve that opens and closes the passage, the second internal pressure adjusting means includes a second communication passage for communicating the drainage chamber with the outside, and the first internal pressure adjusting device. When the internal pressure of the drainage chamber is set to a negative pressure equal to that of the liquid storage chamber by the means, the second communication path is opened by opening the second communication path after a predetermined time has elapsed since the opening operation. And a second solenoid valve for opening and closing the valve. .

In the separator having such a structure, the first communication passage for connecting the liquid storage chamber and the drainage chamber is opened and closed by the first solenoid valve, and the suction device of the suction device is simply opened and closed. By suction, the internal pressure of the liquid storage chamber can be easily set to a negative pressure equal to the internal pressure of the drainage chamber, or can be easily set to a negative pressure larger than the internal pressure of the drainage chamber. Therefore, the internal pressure of the drainage chamber can be set to the atmospheric pressure simply by opening the second communication passage for connecting the drainage chamber to the outside with the second solenoid valve.

Therefore, in the separator of the present invention, the internal pressures of the liquid storage chamber and the drainage chamber can be adjusted with a simple structure that does not require any special pressure source other than the existing suction device. As a result, as a result, it is possible to improve the workability in the drainage discharge operation at the lowest possible cost.

Further, according to another advantageous aspect of the separator according to the present invention, the first closing means is provided so that the opening of the outflow passage on the side of the drainage chamber has the opening. When the internal pressure of the storage chamber is set to a negative pressure larger than the internal pressure of the drainage chamber, the first valve body is By being brought into close contact with the peripheral portion of the opening by the suction force of the suction device, the opening is closed. A second valve body having an outlet openably and closably attached thereto, and when the internal pressure of the drainage chamber is set to a negative pressure, the second valve body is discharged by the suction force of the suction device. The outlet is configured to be closed by being closely attached to a peripheral portion of the outlet. .

In the separator employing such a configuration, the first valve body and the second valve body attached to the opening and the discharge port of the outflow passage are simply connected to the outflow passage by suction of the suction device. The opening and the outlet of the outflow passage are closed by the close contact with the peripheral part of the opening and the outlet of the outlet. Blockage of the outflow channel and outlet can be achieved with a very simple structure. Therefore, even in the separator of the present invention, the improvement of the workability in the drainage discharge operation can be advantageously realized with the lowest possible cost and the simple structure.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, in order to clarify the present invention more specifically, the structure of a separator according to the present invention will be described.
This will be described in detail with reference to the drawings.

First, FIG. 1 shows, as an example of a separator having a structure according to the present invention, a drainage drainage system, that is, a drainage which is sucked together with air from a patient's mouth by a suction device in dental care. An automatic drain separator incorporated in a system for draining liquid to the outside is schematically illustrated in its longitudinal section. As is clear from FIG. 1, the automatic drain separator 10 is configured to include a liquid storage tank 12 and a drain tank 14 arranged vertically.

More specifically, the liquid storage tank 12 has a cylindrical body 16 having a bottom on one side and opening upward.
And a disk-shaped lid 18. The upper opening of the main body 16 is covered with the lid 18 so as to be openable and closable. Further, in the liquid storage tank 12, a ring-shaped seal rubber is interposed between the outer peripheral edges of the main body 16 and the lid 18, and the side surfaces of the main body 16 and the lid 18 are A plurality of known fixing members (not shown) for fixing the main body 16 and the lid body 18 in close contact with each other are provided at equal intervals in the circumferential direction. Thus, the inside of the main body 16 is fluid-tightly sealed with the upper end opening of the main body 16 covered with the lid 18, and the closed main body 16 is closed. The internal space is a liquid storage chamber 22.

The lower outer peripheral surface of the side wall of the main body 16 of the storage tank 12 in which the liquid storage chamber 22 is formed has a predetermined length below the bottom wall of the main body 16. A plurality of mounting stays 20 provided with extending legs 19 are fixedly provided at equal intervals in the circumferential direction. On the other hand, a connection port 24 penetrating through the side wall is formed in an upper portion of the side wall, and the connection port 24 is bent at an intermediate portion in the longitudinal direction, and one side is horizontally oriented. And a connection port connecting pipe 26 composed of an elbow pipe extending downward on the other side opens the opening on the one side to the outside, while opening the opening on the other side into the liquid storage chamber 22. , Is installed.

The connection port connecting pipe 26 is connected to a suction pipe 28 (shown by a two-dot chain line in FIG. 1) to an opening to the outside. Although not shown, the suction pipe 28 connected to the connection port connection pipe 26 has a distal opening inserted into the oral cavity of the patient to suck air and drainage from the oral cavity. It is a suction port. That is, here, the suction pipe 28 as a suction pipe is connected to the connection port 24 of the liquid storage chamber 22 via the connection port connecting pipe 26.

A communication port 30 penetrating through the cover 18 is provided at the center of the cover 18 which covers the upper end opening of the main body 16 of the liquid storage tank 12.
Has a communication port connecting pipe 32 composed of a short straight pipe.
Are mounted such that one opening is opened to the outside and the other opening is opened in the liquid storage chamber 22. In addition, even in this communication port connecting pipe 32, the suction pipe 34
(Indicated by the two-dot chain line in FIG. 1). Although not shown, the suction pipe 34 connected to the communication port connection pipe 32 is connected to a predetermined suction device such as a blower at a distal end portion. That is, here, the communication port connection pipe 3
2 through a suction pipe 34 serving as a suction pipe connected to the communication port 30 of the liquid storage chamber 22 through the communication port 30.
Is communicated to the suction device.

Thus, the internal pressure of the liquid storage chamber 22 of the liquid storage tank 12 is set to be negative with the suction of the suction device (not shown). The air and the drainage that are sucked and flowed through the suction pipe 28 flow into the liquid storage chamber 22 from the connection port connecting pipe 26 attached to the connection port 24, and are separated there. ing. Then, only the air separated from the drainage in the liquid storage chamber 22 is communicated with the communication port 30.
The distal end is sent out from the communication port connecting pipe 32 attached to the suction pipe 28 into the suction pipe 28 connected to the suction device.

On the other hand, the liquid storage tank 12 having such a structure
The drainage tank 14 positioned below the storage tank 12
The main body 16 has a substantially same volume as the main body 16, and has a cylindrical main body 46 with a bottom and open on one side, and a disc-shaped lid 48. Also in the drainage tank 14, the upper opening of the main body 46 is opened and closed by the lid 48 with the same structure as the cover structure of the lid 18 with respect to the main body 16 of the liquid storage tank 12, Further, under the cover state, the inside of the main body 46 is fluid-tightly sealed, so that the internal space of the sealed main body 46 is
The drain chamber 50 is provided.

The drainage tank 14 is placed on a stand 51 having a predetermined height, so that an appropriate space is provided below the bottom wall of the main body 46. It is supported in a state where it is arranged at a predetermined height position. Further, a plurality of mounting brackets 52 are fixed to the upper outer peripheral surface of the side wall of the main body 46 of the drainage tank 14 at equal intervals in the circumferential direction. Then, the main body 16 of the liquid storage tank 12 is attached to the mounting bracket 52.
Leg 19 of each mounting stay 20 fixedly mounted on the lower outer peripheral surface of
Is fitted in such a way that the liquid storage tank 12 is positioned above the drainage tank 14.
However, in a state where the bottom wall of the main body 16 is arranged at a predetermined distance from the lid 48 of the drainage tank 14,
It is supported by.

Further, between the liquid storage tank 12 and the drainage tank 14 arranged in such a state, the bottom wall of the main body 16 of the liquid storage tank 12 faces the lid 48 of the drainage tank 14. An extended outflow channel 54 is provided by connecting a plurality of pipes to each other.

That is, here, at the center of the bottom wall of the liquid storage tank 12, there is provided an outlet 56 penetrating the same in the thickness direction, and an outlet connecting pipe 58 is connected to the outlet 56. , So as to extend downward by a predetermined dimension. At the center of the lid 48 of the drainage tank 14, an inlet 60 penetrating the lid 48 is provided, and an inlet connection pipe 62 is connected to the inlet 60 with the lid 4.
8 are attached so as to be able to extend a predetermined dimension above and below, respectively. The outlet connection pipe 58 is connected at its lower end to a portion of the inlet connection pipe 62 extending upward from the lid 48, while the lid of the inlet connection pipe 62 is connected to the lower end of the inlet connection pipe 62. 4
A portion extending downward from 8, in other words, a portion extending into the drainage chamber 50 of the drainage tank 14 is bent at an intermediate portion in the longitudinal direction to extend in the horizontal direction from the vertical direction. An extension pipe 64 constituted by an elbow pipe is connected. As a result, the outlet connection pipe 58, the inlet connection pipe 62, and the extension pipe 64 are integrally connected to each other, and the outlet 56 and the inlet Through 60, continuous conduits are respectively opened in the liquid storage chamber 22 and the drainage chamber 50, and the outflow path 54 is formed in this conduit.

The outflow passage 54 having such a structure is also provided.
The extension pipe 64 is connected to an inflow end connecting pipe 62 attached to an inflow port 60 of the drainage tank 14, that is, the extension pipe 64 positioned in the drainage chamber 50. A mounting ring 66 having a thick annular plate shape is extrapolated and fixed to the horizontal extension side end of the mounting ring 66. Further, the mounting ring 66 is provided as a first closing means. The first valve body 68 is suspended so as to cover the opening of the extension pipe 64 so that the opening can be opened and closed. That is, the first valve body 68 has an outer diameter that is larger than the opening diameter of the opening of the extension pipe 64 into the drainage chamber 50 by a predetermined dimension, and is sufficient to close (cover) the opening. Size, and is formed of a flat disk-shaped rubber plate having appropriate elasticity, and only at the upper end portion of the outer periphery of such a disk shape,
It is bolted to the end surface of the mounting ring 66.

Thus, in the separator 10 of the present embodiment, the liquid storage tank 12
When the internal pressure of the liquid storage chamber 22 is set to a negative pressure larger than the internal pressure of the drainage chamber 50 of the drainage tank 14, the suction force of the suction device causes the first valve body 68 to move In the outer peripheral portion, the drainage chamber 50 is brought into close contact with the end face of the opening of the extension pipe 64 into the drainage chamber 50, so that even when the drainage is flowing into the storage chamber 22, the drainage of such drainage is The opening is closed by the first valve body 68 against the hydraulic pressure. When the internal pressures of the liquid storage chamber 22 and the drainage chamber 50 are set to be equal to each other, when the drainage is flowing into the liquid storage chamber 22, the liquid pressure of the drainage is used. The first valve body 68 is pressed and turned upward so as to be separated from the end face of the opening of the extension pipe 64 into the drainage chamber 50, so that the opening is opened. I have.

Therefore, in the separator 10, only when the internal pressure of the liquid storage chamber 22 is set to a negative pressure larger than the internal pressure of the liquid discharge chamber 50, the liquid is discharged into the liquid storage chamber 22. The liquid is gradually stored, and the storage chamber 22 and the drain chamber 5 are stored.
When the internal pressure of 0 is made equal, the drainage stored in the liquid storage chamber 22 can be made to flow out of the liquid storage chamber 22 into the drainage chamber 50 through the outflow passage 54. -ing

Further, as described above, the drainage tank 1 forming the drainage chamber 50 into which the drainage flows from the liquid storage chamber 22.
A through-hole 70 is formed in the center of the bottom wall of the fourth body 46 so as to penetrate the bottom wall. A discharge pipe 72 composed of an elbow pipe extending in the horizontal direction from the vertical direction by being bent at the intermediate portion in the length direction is attached to the through hole 70, whereby the drain chamber is formed. A discharge port 74 is formed at the end of the discharge pipe 72 at the end of the discharge pipe 72 extending in the horizontal direction.

At the end of the discharge pipe 72 on the side where the discharge port 74 is formed, a mounting ring 76 having the shape of a thick annular plate is extrapolated and fixed. On the other hand, a housing 78 having a bottomed cylindrical shape having an inner diameter larger than the outer diameter of the discharge pipe 72 is bolted at the bottom on one side.

In the housing 78, a central hole 80 having the same diameter as the discharge port 74 of the discharge pipe 72 penetrates through the bottom at the center of the bottom on the side fixed to the mounting ring 76. The central hole 80
And a cylindrical portion 82 extending in the axial direction with a diameter slightly smaller than the bottom is provided on the opposite bottom at the opposite end. And are formed integrally so as to communicate with each other. In addition, a flange-shaped annular portion 84 that protrudes a predetermined dimension in the radial direction and extends continuously in the circumferential direction is integrally provided on the inner surface of the cylindrical wall portion of the housing 78 at the intermediate portion in the longitudinal direction. On the side surface of the annular portion 84 opposite to the discharge port 74 side, a second valve body 86 covers the inner hole 88 of the annular portion 84 so as to be openable and closable. , Is suspended.

That is, the second valve body 86 has an outer diameter smaller than the inner diameter of the housing 78 and larger than the diameter of the inner hole 88 of the annular portion 84. Is formed of a flat disk-shaped rubber plate having a size sufficient to close (cover) the disk and an appropriate elasticity. 8
4 is bolted to the side surface opposite to the discharge port 74 side.

Thus, in the separator 10 of the present embodiment, the drainage chamber 50
When the internal pressure is negative, the suction force of the suction device causes the second valve body 86 to move
The side surface of the annular portion 84 of the housing 78 opposite to the discharge port 74 side is brought into close contact with the side surface, so that the drainage liquid flows into the drainage chamber 50 from the liquid storage chamber 22. However, the inner hole 88 of the annular portion 84 provided in the housing 78 communicating with the discharge port 74 is closed by the second valve body 86 against the hydraulic pressure of the drainage. I have. Further, when the internal pressure of the drainage chamber 50 is set to the atmospheric pressure, when the drainage is flowing into the drainage chamber 50, the second valve body 86 is driven by the hydraulic pressure of the drainage. Is pressed and turned upward so as to be separated from the side surface of the annular portion 84, so that the inner hole 88 of the housing 78 communicating with the discharge port 74 is opened to the outside. .

Therefore, in the separator 10, only when the internal pressure of the drain chamber 50 is set to a negative pressure, the drain liquid flowing out of the storage chamber 12 gradually enters the drain chamber 50. When the internal pressure of the drainage chamber 50 is set to the atmospheric pressure, the drainage stored in the drainage chamber 50 is discharged from the outlet 74 through the cylindrical portion 82 of the housing 78 to the outside. It is configured so that it can be discharged.

By the way, at the intermediate portion in the height direction in the liquid storage chamber 22 in which the drainage can be stored by the structure as described above, the main float 36 is provided with the liquid storage tank 1 constituting the liquid storage chamber 22.
The second main body 16 is vertically movably arranged along the side wall. The main float 36 is connected to the liquid storage chamber 22.
As the liquid level rises with an increase in the amount of waste liquid stored in the inside, the liquid can be raised to a predetermined upper limit position as shown by a two-dot chain line in FIG. A main float switch 38 that is turned ON when the main float 36 is lifted to the upper limit position is provided at an intermediate portion of the side wall portion of the main body 16 of the liquid storage tank 12 so as to be embedded. Have been.

Further, in the liquid storage chamber 22, just below the communication port connecting pipe 32 attached to the lid 18, similarly to the main float 36, the amount of the liquid stored in the liquid storage chamber 22 is stored. The sub-floats 40 that are raised as the number of the sub-floats are increased are arranged above the position where the main float 36 is provided. Further, the sub-float 40 has a bottomed cylindrical shape having an outer diameter larger than the opening diameter of the communication port connecting pipe 32 located immediately above to the liquid storage chamber 22, and has an outer peripheral edge at an upper bottom. An outer flange portion 42 protruding outward in the radial direction is integrally provided.

That is, in the sub-float 40, the liquid level of the drainage stored in the liquid storage chamber 22 is:
When the main float 36 is raised above the floating upper limit position, the main float 36 can be raised. Then, as shown by the two-dot chain line in FIG.
Due to the floating of the sub-float 40, the opening to the liquid storage chamber 22 of the communication port connecting pipe 32 for sending out the air into the suction pipe 28 whose tip is connected to the suction device is located above the sub-float 40. The outer surface of the bottom is closed. Further, here, on the outer flange portion 42 of the sub-float 40 and the lid 18,
Proximity switches 44a and 44b, which are turned on by being brought close to each other, are provided. As described above, the opening of the communication port connecting pipe 32 to the liquid storage chamber 22 is opened by the floating of the sub-float 40 as described above.
0, and at the same time, their proximity switches 44a, 44b are turned ON,
The operation of the suction device (not shown) is stopped.

The liquid storage tank 12 in which the main float 36 and the sub-float 40 having such a structure are disposed.
And the drainage tank 14 positioned below the drainage tank 14, in a path different from the outflow path 54,
A first communication path 90 is provided for communicating the second liquid storage chamber 22 and the drainage chamber 50 of the drainage tank 14.

That is, the first communication passage 90 is constituted by a small-diameter tube having a predetermined length. One end in the length direction is attached to the lid 18 of the liquid storage tank 12 so as to penetrate the lid 18, so that the liquid storage chamber 22 is opened at the opening on the one end side. The other end in the length direction is attached to the lid 48 of the drainage tank 14 through the lid 48 so that Are opened in the drainage chamber 50 so that the liquid storage chamber 22 and the drainage chamber 50 communicate with each other and extend between the liquid storage tank 12 and the drainage tank 14. Thus, they are arranged.

The first communication passage 90 having such an arrangement is provided at the intermediate portion in the longitudinal direction of the first communication passage 90 with the first communication passage 9.
A first solenoid valve 92 that opens and closes 0 is provided. The first solenoid valve 92 is connected to the main float switch 38 provided on the side wall of the main body 16 of the liquid storage tank 12.
Is electrically connected to a timer device (not shown), and is opened when the main float switch 38 is turned on. On the other hand, after a lapse of a predetermined time from the opening operation, The closing operation is performed by a timer device.

As a result, in the separator 10 of the present embodiment, the amount of the discharged waste liquid which has flowed into the liquid storage chamber 22 by the suction of the suction device and rises from the main float 36 to the upper limit position. When it is increased to the amount to be squeezed, the liquid storage chamber 22 and the drainage chamber 50 are made to communicate with each other through the first communication path 90, whereby the suction force is also exerted in the drainage chamber 50. The pressure inside the drainage chamber 50 is reduced, and as a result, the internal pressures of the liquid storage chamber 22 and the drainage chamber 50 are set so that the internal pressure of the liquid storage chamber 22 and the internal pressure of the drainage chamber 50 become equal to each other. Is to be adjusted. Further, after a lapse of a predetermined time from the state where the internal pressures of the liquid storage chamber 22 and the drainage chamber 50 are set to the same negative pressure, the communication between the liquid storage chamber 22 and the drainage chamber 50 is canceled. It is supposed to be. As is apparent from this, in the present embodiment, the first communication path 90 and the first solenoid valve 92 constitute a first internal pressure adjusting means.

The drainage tank 1 having such a drainage chamber 50
4 is provided with a drainage chamber 50 which is different from a path which is communicated to the outside through a discharge port 74 of the discharge pipe 72.
Is provided with a second communication passage 94 for communicating the outside with the outside.

The second communication passage 94, like the first communication passage 90, is formed of a small-diameter tube having a predetermined length. In the second communication path 94, one end in the length direction is connected to the lid 48 of the drainage tank 14.
By being attached through the lid 48, the opening at the one end is opened into the drainage chamber 50, while the opening at the other end in the longitudinal direction is opened. The part is opened to the outside, so that the part is extended from the drainage tank 14 to the outside so as to connect the drainage chamber 50 to the outside, and is disposed.

A second solenoid valve 96 for opening and closing the second communication passage 94 is provided at an intermediate portion in the longitudinal direction of the second communication passage 94. This second solenoid valve 96
It is electrically connected to a timer device (not shown) which is electrically connected to a first solenoid valve 92 provided in the first communication passage 90. The valve 92 is opened at the same time as the valve 92 is closed, and is closed by the timer device after a lapse of a predetermined time from the opening operation.

Thus, in the separator 10 according to the present embodiment, only the drain chamber 50 communicates with the outside under the condition that the internal pressure of the drain chamber 50 is set to a negative pressure equal to the internal pressure of the storage chamber 22. Thus, the pressure can be adjusted so that only the internal pressure of the drainage chamber 50 becomes the atmospheric pressure. As is apparent from this, in the present embodiment, the second communication path 94 and the second solenoid valve 96 constitute the second internal pressure adjusting means.

Thus, in the separator 10 of the present embodiment having such a structure, the liquid storage chamber 22 and the liquid discharge chamber 50
In a state where no drainage is stored in any of the above, the first communication passage 90 is closed, and the internal pressure of the liquid storage chamber 22 is reduced to a negative pressure by the suction of the suction device. Is set to the atmospheric pressure, whereby the opening on the drainage chamber 50 side of the outflow passage 54 communicating the liquid storage chamber 22 and the drainage chamber 50 is closed by the first valve body 68. . Therefore, in such a state, the drainage that flows into the liquid storage chamber 22 through the connection port connecting pipe 26 with the suction of the suction device is gradually stored in the liquid storage chamber 22.

When the main float 36 in the liquid storage chamber 22 is raised to a predetermined upper limit position due to an increase in the amount of drainage stored in the liquid storage chamber 22, the first communication path 90
Is opened, and the liquid storage chamber 22 and the drainage chamber 50 are communicated with each other through the first communication passage 90, whereby the internal pressure of the drainage chamber 50 is equal to the internal pressure of the liquid storage chamber 22. Negative pressure. Then, due to the liquid pressure (own weight) of the drainage in the liquid storage chamber 22, the opening of the outflow passage 54 on the side of the drainage chamber 50 by the first valve body 68 is eliminated, and the opening is opened. As a result, the entire amount of the drainage stored in the liquid storage chamber 22 flows out into the drainage chamber 50 through the outflow passage 54. At this time, the drainage chamber 5
0 is still a negative pressure, so that the inner hole 8 of the annular portion 84 in the housing 78 communicates with the discharge port 74.
The closed state of the second valve body 8 is maintained, and the drainage flowing into the drainage chamber 50 is stored in the drainage chamber 50.

Thereafter, when the first communication path 90 is closed after a lapse of a predetermined time and the second communication path 94 is opened at the same time, the inside of the liquid storage chamber 22 is maintained in a negative pressure state, The internal pressure of the drainage chamber 50 is set to the atmospheric pressure. At this time, the internal pressure of the liquid storage chamber 22 becomes a negative pressure larger than the internal pressure of the drainage chamber 50, so that the opening of the outflow passage 54 on the drainage chamber 50 side is again opened by the first valve body 68. Be blocked. On the other hand, in the drain chamber 50 where the internal pressure is set to the atmospheric pressure,
The closure of the inner hole 88 of the annular portion 84 in the housing 78 by the second valve body 86 is eliminated, and the discharge port 74 is opened to the outside through the inner hole 88 of the housing 78. As a result, the entire amount of the drainage stored in the drainage chamber 50 is discharged to the outside through the discharge port 74 and the opening of the housing 78 to the outside.

Then, after the elapse of a predetermined time, the second communication passage 94 is closed, so that the liquid storage chamber 22 is closed.
In a state where no drainage liquid is stored in any of the drainage chamber 50 and the drainage chamber 50, the internal pressure state in which the negative pressure in the liquid storage chamber 22 is maintained and the pressure in the drainage chamber 50 is set to the atmospheric pressure is maintained. Will be done.

As described above, in the separator 10 according to the present embodiment, the liquid discharged into the liquid storage chamber 22 due to the suction of the suction device is independent of the liquid storage chamber 22. The liquid is discharged into the drainage chamber 50, and
Through the discharge port 74 provided therethrough, and the negative pressure state in the liquid storage chamber 22 during such outflow or discharge of the drainage liquid. Can be maintained. Therefore, the drainage liquid flowing into the liquid storage chamber 22 can be reliably discharged to the outside without stopping the suction device communicating with the liquid storage chamber 22 at all. You get.

Therefore, the separator 1 of the present embodiment as described above.
If 0 is used, excellent usability that cannot be obtained with a conventional separator that cannot discharge drainage unless the suction device is stopped can be advantageously exerted. Therefore, the improvement of the workability in the drainage discharge operation can be realized extremely effectively.

In the separator 10 according to the present embodiment, the liquid storage chamber 22 and the drainage chamber 50 communicate with each other through the first communication path 90 having a simple structure composed of a tube having a predetermined length. The liquid storage chamber 22 is operated by simply opening and closing such a first communication path 90 with a first solenoid valve 92 provided in the middle thereof.
The inside is always maintained in a negative pressure state, and on the other hand, a second communication passage 94 having the same simple structure as the first communication passage 90 is connected to the drainage chamber 50.
By performing a simple operation of simply opening the second communication passage 90 by a second solenoid valve 96 provided in the middle of the second communication passage 90, the inside of the drainage chamber 50 is set to the atmospheric pressure. Then, the drainage stored in the drainage chamber 50 can be discharged to the outside.
And the internal pressure of the drainage chamber 50 can be adjusted with a simple structure that does not require any special pressure source other than the existing suction device, whereby the drainage can be reliably performed.

Moreover, in the separator 10 of the present embodiment, the first valve body 68 made of a disc-shaped rubber plate is provided at the opening at the tip end of the outflow passage 54 through which the waste liquid flows out from the liquid storage chamber 22.
Is mounted so as to cover the opening so as to be openable and closable, and has a disk-like shape in a housing 78 which is mounted under communication with a discharge port 74 of a discharge pipe 72 for discharging the drainage from the drainage chamber 50. Second valve body 86 made of a rubber plate
Is attached so as to open and close an inner hole 88 communicating with the discharge port 74, and the internal pressure of the liquid storage chamber 22 and the
Of the first valve body 68 and the second valve body 8
6, the opening of the outflow passage 54 and the discharge port 74 can be opened and closed, so that the discharge of the discharged liquid from the liquid storage chamber 22 and the discharge from the discharged liquid chamber 50 are extremely simple. It can be realized in.

Therefore, the separator 1 according to the present embodiment as described above.
In the case of 0, the effect of improving the workability in the drainage discharge operation as described above can be achieved extremely advantageously at the lowest possible cost.

Further, in the separator 10 of the present embodiment, a sub-float 40 is provided in the liquid storage chamber 22, and the liquid level of the discharged liquid stored in the liquid storage chamber 22 rises above the main float 36. When the sub-float 40 is raised above the limit position, the sub-float 40 is raised, whereby the opening of the communication port suction pipe 32 communicating with the suction device is closed and the operation of the suction device is stopped. Therefore, even if the stored amount of the drainage in the liquid storage chamber 22 exceeds the specified amount for some reason, the drainage of the drainage flows into the suction device. It can be more safely and reliably prevented.

Although the specific configuration of the present invention has been described in detail above, this is merely an example, and the present invention is not limited by the above description.

For example, in the above-described embodiment, the liquid storage chamber 22 and the liquid discharge chamber 50 are formed by the respective internal spaces of the liquid storage tank 12 and the liquid discharge tank 14 arranged vertically. The liquid storage tank 12 and the liquid discharge tank 14 that provide the liquid storage chamber 22 and the liquid discharge chamber 50 are provided inside the liquid storage chamber 22 and the liquid discharge chamber 5.
If the drainage is allowed to flow out into the chamber 0 and the drainage can be discharged from the drainage chamber 50 to the outside, the arrangement form is as follows.
It is not limited to this.

In the above embodiment, the combination of the main float 36 and the main float switch 38 provided in the liquid storage chamber 22 causes the first solenoid valve 92 provided in the first communication passage 90 to open. The storage amount of the drainage in the liquid storage chamber 22 is detected, but a known liquid amount detection device having a structure other than the combination of the main float 36 and the main float switch 38 is provided in the liquid storage chamber 22. The first solenoid valve 9 provided in the first communication path 90 is provided to detect the amount of drainage stored in the liquid storage chamber 22.
Of course, it is also possible to configure so that 2 is opened.

Even when such a combination of the main float 36 and the main float switch 38 is employed, the arrangement position of the main float 36 is not particularly limited to that shown in the above embodiment. Instead, depending on the limit amount of the amount of drainage stored in the liquid storage chamber 22,
It will be determined appropriately.

Further, in the above embodiment, when the amount of drainage stored in the liquid storage chamber 22 becomes equal to or more than the specified amount, the opening of the communication port connecting pipe 32 communicating with the suction device is closed, and the suction is performed. Although the sub-float 40 and the proximity switches 44a and 44b for stopping the operation of the apparatus are provided, they are not essential in the present invention.

Further, in the above embodiment, the outflow path 54
A first valve body 68 made of a disc-shaped rubber plate suspended so as to openably and closably cover the opening on the side of the drainage chamber 50 and the inner hole 88 of the housing 78 communicating with the discharge port 74. The first closing means and the second closing means are constituted by the second valve body 86 and the first closing means. Outflow channel 5 according to the internal pressure of
Needless to say, as long as the opening on the side of the liquid discharge chamber 50 and the discharge port 74 can be closed, the arrangement structure, material and the like are not limited to these.

Further, the first internal pressure adjusting means and the second internal pressure adjusting means also increase the internal pressure of the drainage chamber 50 when the amount of drainage stored in the liquid storage chamber 22 increases and reaches a predetermined amount. The drainage chamber is configured so that the internal pressure of the liquid storage chamber 22 and the drainage chamber 50 can be adjusted so as to be a negative pressure equal to the internal pressure of the liquid storage chamber 22, and the negative pressure is set to the same negative pressure as the liquid storage chamber 22 If it is configured so that the internal pressure of the drainage chamber 50 can be adjusted so that the internal pressure of 50 becomes the atmospheric pressure, it is not particularly limited to the structure as shown in the above embodiment. Of course.

In addition, in the above-described embodiment, a specific example in which the present invention is applied to a separator incorporated in a dental drainage discharging system is shown. It goes without saying that the present invention can be advantageously applied to any of the separators provided in the drainage system for various wastewaters generated in facilities in other fields.

In addition, although not enumerated one by one, the present invention
Based on the knowledge of those skilled in the art, various changes, modifications, improvements and the like can be performed in embodiments, and unless such embodiments depart from the spirit of the present invention.
Both are included in the scope of the present invention,
Needless to say.

[0067]

As is apparent from the above description, in the separator according to the present invention, an excellent separator cannot be obtained with a conventional separator which cannot discharge waste liquid unless the suction device is stopped. Usability can be exhibited in an advantageous manner, and it is possible to continuously perform the drainage discharge work, thereby realizing an extremely effective improvement in the workability in the drainage discharge work. It can be done.

[Brief description of the drawings]

FIG. 1 is an explanatory longitudinal sectional view showing an example of a separator having a structure according to the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 automatic drain separator 12 liquid storage tank 14 drain tank 22 liquid storage chamber 24 connection port 28, 34 suction pipe 30 communication port 36 main float 38 main float switch 50 drain chamber 54 outflow path 68 first valve body 74 Discharge port 86 Second valve element 90 First communication path 92 First electromagnetic valve 94 Second communication path 96 Second electromagnetic valve

Claims (3)

[Claims] An air supply device is provided in the middle of a suction pipe extending from a predetermined suction device, and separates air discharged from the air sucked by the suction device and flowing through the suction pipe, thereby separating the separated air. To a suction device while discharging the separated waste liquid through a discharge port to the outside, having a communication port communicating with the suction device and a connection port to which the suction pipe is connected. Then, the internal pressure is made negative by the suction of the suction device through the communication port, so that the air and the drainage flowing through the suction pipe flow from the connection port, while the air is discharged. The liquid is sent out from the communication port to the suction device, and is connected to the liquid storage chamber through a liquid storage chamber that stores the liquid drainage and an outflow passage that allows the liquid drain stored in the liquid storage chamber to flow out of the liquid storage chamber. And drain the liquid to the outside Came the discharge port is provided,
A drain chamber that is opened to the outside through the drain port, and a first blockage that closes the outflow passage when the internal pressure of the storage chamber is set to a negative pressure greater than the internal pressure of the drain chamber. Means, a second closing means for closing the discharge port when the internal pressure of the drainage chamber is a negative pressure, and a predetermined amount by which the amount of the drainage stored in the liquid storage chamber increases. When reaching, the first internal pressure adjusting means for adjusting the internal pressure of the liquid storage chamber and the drainage chamber, so that the internal pressure of the drainage chamber becomes a negative pressure equal to the internal pressure of the liquid storage chamber, Second internal pressure adjusting means for adjusting the internal pressure of the drainage chamber so that the internal pressure of the drainage chamber, which has been made equal to the negative pressure of the liquid storage chamber by the first internal pressure adjusting means, becomes the atmospheric pressure. The first internal pressure adjusting means sets the internal pressure of the drain chamber to a negative pressure equal to the internal pressure of the liquid storage chamber, whereby the first internal pressure is adjusted. While the closing of the outflow path by the closing means is released, the internal pressure of the drainage chamber is set to the atmospheric pressure by the second internal pressure adjusting means, so that the discharge port of the discharge port by the second closing means is closed. A separator configured to release a blockage. 2. The method according to claim 1, wherein the first internal pressure adjusting means includes a first communication passage for communicating the liquid storage chamber with the drainage chamber, and the storage amount of the drainage in the liquid storage chamber being the predetermined amount. And a first solenoid valve that opens and closes the first communication path by being opened when a predetermined time elapses from the opening operation and when the opening operation is performed. ,
The second internal pressure adjusting means has a second communication passage for communicating the drainage chamber to the outside, and the first internal pressure adjusting means has an internal pressure of the drainage chamber equal to the negative pressure of the liquid storage chamber. And a second solenoid valve that opens and closes the second communication path by being opened when a predetermined time has elapsed since the opening operation. The separator according to claim 1, characterized in that: 3. The storage device according to claim 1, wherein the first closing means includes a first valve body attached to the opening on the drainage chamber side of the outflow passage so as to open and close the opening. When the internal pressure of the chamber is a negative pressure greater than the internal pressure of the drainage chamber, the first valve body is brought into close contact with the peripheral portion of the opening by the suction force of the suction device. By
While the opening is configured to be closed, the second closing means includes a second valve body attached to the outlet so as to open and close the outlet, and the drain chamber When the internal pressure is negative, the second valve element is configured to close the discharge port by being brought into close contact with the peripheral portion of the discharge port by the suction force of the suction device. The separator according to claim 1 or 2, wherein: