JPH09196000A - Earthquake-proof and sound-proof negative pressure generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small and quiet negative pressure generating device capable of being installed in a room in a hospital. SOLUTION: A jet pump M.J.P is formed of a pressuring means for sucking and pressurizing liquid in a container 9, a liquid injection nozzle 12 for injecting liquid pressurized by the pressurizing means, a negative pressure forming pipe 12 for forming negative pressure by fluid injected from the liquid injection nozzle 12, and a suction port communicated with a suction pipe 7 at a negative pressure forming part of a negative pressure forming pipe 13, the jet pump M.J.P is housed in the container in which liquid is stored, at least one part of the jet pump M.J.P is submerged in liquid stored in the container 9, and vibration and noise generated on the jet pump M.J.P are sucked to the liquid in the container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a negative pressure forming device which is a drive source for sucking and transporting human waste, and more particularly to a sound pressure and vibration isolating negative pressure forming device.

[0002]

2. Description of the Related Art For example, a negative pressure generating device as a driving source for treating human waste of a bedridden patient in a hospital or the like, sucking cleaning water for indoor cleaning or collecting dust is a plunger pump, a blower, etc. A vacuum device is used, and when such a vacuum device sucks liquid such as water or human waste or solids, it becomes inoperable.Therefore, the negative pressure generated by the vacuum device is stored in a reservoir tank or receiver tank. The pulsation is eliminated to stably supply the negative pressure, and the solid / gas / liquid contained in the sucked fluid is separated by the reservoir tank.

However, the principle of forming a negative pressure or forming a pressure fluid in a device such as a plunger pump or a blower for supplying a negative pressure to the suction device as described above is based on a volume change. Therefore, for example, when the volume changes, large vibrations and noises are generated from the plunger pump, the blower, and other devices.

Further, the negative pressure generated by the vacuum device causes the solid
When aspirated substances such as human waste containing water and gas, covered water, and dust are sucked into the reservoir tank, the negative pressure in the reservoir tank is higher than the flow force of the aspirated substances and the negative pressure in the suction pipeline.
The volume suddenly expands in the reservoir tank from the suction pipe line to generate large vibration and noise.

There is a problem in that the noise generated when the vacuum device is driven and the large vibrations and noise generated during the work are dissipated to the surroundings, which causes the deterioration of the working environment and the surrounding environment. Therefore, in hospitals that require quietness,
A vacuum device and a reservoir tank that cause vibration and noise are installed outside the room and covered with a soundproof case wall so that the suction pipe is connected to a desired suction place.

[0006]

A vacuum device, a reservoir tank, etc., which are installed outdoors as described above, are covered with a soundproof case wall, and a suction pipe is connected to a desired suction place from here. Since the installed vacuum device, the reservoir tank, etc. are covered with the soundproof case wall, the size becomes large and there is a problem that a large installation place is required.

Further, there has been a problem that piping must be provided from a vacuum device and a reservoir tank installed outdoors to a suction site, and the initial cost is increased due to the piping and the like.

[0008] In addition, not only does the running cost increase due to the increased loss due to flow resistance when the length of the piping is increased,
There is also a problem that even if a high output vacuum device is used, suction cannot be performed sufficiently.

The present invention has been proposed in view of the above problems, and it is an object of the present invention to provide a quiet negative pressure generator which is small and can be installed in a room such as a hospital. is there.

[0010]

In order to achieve the above object, an earthquake-proof and sound-proof negative pressure generating device according to the present invention comprises a pressurizing means for sucking and pressurizing a liquid in a container and a pressurizing means. With a liquid injection nozzle that ejects the ejected liquid, a negative pressure forming pipe that forms a negative pressure with the fluid that is ejected from the liquid ejection nozzle, and a suction port that communicates with the suction pipe in the negative pressure forming portion of the negative pressure forming pipe. A jet pump is formed, and the jet pump is housed in a container in which a liquid is stored, and at least a part of the jet pump is buried in the liquid stored in the container,
It is characterized in that vibration and noise generated in the jet pump portion are absorbed by the liquid in the container.

Another feature is that the suction opening of the suction tube is opened toward the excretion part or the human waste.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. <Embodiment 1> FIG. 1 is a perspective view of an excrement processing system for treating human waste of a sick person, which is an example of an aspirate, and reference numeral 1 in the figure generally indicates the excrement processing and excretion system.

This excrement disposal system 1 is for treating human waste and the like of a bedridden patient 3 lying on a bed 2 in a hospital room, and it is an earthquake-proof and sound-proof type negative pressure generator 4 and an earthquake-proof and sound-proof type negative pressure generator. 4 and a suction tube 5 at the end of the suction tube 7 that opens toward the buttocks (excretion part) 6 of the patient 3.

As shown in FIG. 2, the seismic-proof and sound-proof negative pressure generator 4 includes a watertight container 9 in which water 8 is stored, and a jet pump MJP installed in the container 9 in a state of being buried in the water 8. And are equipped with.

The jet pump MJP comprises a submersible pump (pressurizing means) 11 of a commercial power source for sucking and pressurizing the water 8 in the container 9 from the water inlet 10, and pressure water pressurized by the submersible pump 11. An injection nozzle 12 for injecting a negative pressure forming pipe 13, a large diameter negative pressure forming pipe 13 having the injection nozzle 12 concentrically attached to the lower portion, and a negative pressure forming pipe 13 formed on the outer peripheral portion of the negative pressure forming pipe 13 on the injection nozzle 12 side The inside and outside of the forming tube 13 are large and small suction ports 14.
A human waste supply chamber 15 communicating with 14 and a buttocks 6 of the patient 3 having one end connected to the human waste supply chamber 15 and the other end serving as a suction opening 5.
And a suction tube 7 opening toward.

The container 9 has the top plate 16 and the suction pipe 7
Is exhausted to the outside, and an exhaust port 17 for exhausting air sucked mainly through the suction pipe 7 is continuously provided from the side surface portion. At the end of the exhaust port 17, as shown in FIG. 1, activated carbon or the like is discharged. A deodorizer 18 is attached.

The small-diameter suction port 14 formed in the vicinity of the injection nozzle 12 of the negative pressure forming tube 13 acts as an intake hole for preventing cavitation, and is sucked into the human waste supply chamber 15. The air is mixed with the jet flow injected from the injection nozzle 12, the jet flow in the negative pressure forming tube 13 is changed to a mixed air jet flow, and the mixed air jet is provided near the large diameter portion of the negative pressure forming tube 13 on the discharge port 19 side. Flow is negative pressure forming tube 1
It is intended to spread a large amount of the negative pressure in 3 to form a large amount of negative pressure.

Reference numeral 20 in FIG. 1 denotes a negative pressure adjusting suction hole formed in the suction opening 5 of the suction pipe 7, and a strong negative pressure generated by the jet pump MJP is applied to the buttocks 6 of the patient 3. It is intended to prevent the relaxation of direct action. Reference numeral 21 in FIGS. 2 and 3 denotes a protector attached to the discharge port 19 portion of the negative pressure forming pipe 13, and the mixed air jet flow discharged from the discharge port 19 of the negative pressure forming pipe 13 is a container. The purpose is to prevent the portion directly hitting the top plate 16 of 9 from being worn away at an early stage, or generating noise or vibration.

The operation of the seismic-proof and sound-proof type negative pressure forming device 4 of the present invention will be described below through the excrement disposal system as constructed above. First, the container 4 in which the jet pump MJP is incorporated is carried near the patient 3 who treats human waste. Next, the submersible pump 11 is operated by a commercial power source to suck and pressurize the water 8 in the container 4, and the pressurized water is jetted from the jet nozzle 12 toward the negative pressure forming pipe 13, As will be described later, the jet flow from the nozzle 12 becomes a mixed air jet flow, and fully spreads into the large diameter portion of the negative pressure forming pipe 13 on the discharge port 19 side, and this widened portion discharges the negative pressure forming pipe 13. The continuous working toward the outlet 19 also acts like a piston, and negative pressure is formed in the negative pressure forming tube 13 by so-called "cavitation" (see FIG. 3).

When a negative pressure is formed in the portion of the negative pressure forming tube 13 on the injection nozzle 12 side, this negative pressure is discharged from the human waste supply chamber 15
After acting on the suction opening 5 through the suction pipe 7 and sucking the excreted excreted sewage into the sewage supply chamber 15, it is sucked from the suction port 14 to the negative pressure forming pipe 13. At this time, the negative pressure acting on the suction opening 5 is adjusted by the air sucked from the negative pressure adjusting intake hole 20 and acts gently on the buttocks 6 of the patient 3 as well as the negative pressure adjusting intake hole. The air sucked from 20 enters the human waste supply chamber 15 through the suction pipe 7, and is sucked into the negative pressure forming pipe 13 from the small-diameter suction port 14.

The air sucked into the negative pressure forming tube 13 is taken into the jet stream jetted from the jet nozzle 12 to form a mixed jet stream, and the mixed jet stream is discharged from the discharge port 1.
A large amount of negative pressure is formed by expanding the negative pressure forming tube 13 on the larger diameter side than 9.

When the mixed air jet flow thus formed is sent while spreading through the negative pressure forming pipe 13, the bubbles in the mixed air jet flow act as a cushion with the inner peripheral surface of the negative pressure forming pipe 13, This prevents the flow force of the mixed air jet flowing in the negative pressure forming tube 13 from decreasing and a strong and large amount of negative pressure is formed in the negative pressure forming tube 13. Negative pressure forming tube 13
The raw sewage containing the solidified substance sucked inside is finely crushed when it is taken in while colliding with the mixed air jet stream having a strong flow force flowing here, and it is aerated and fluidized, and the discharge port 19 is promoted. The water is sent to the container, is inverted by the protector 21, and is discharged into the water 8 in the container 9.

The mixed jet stream containing fluidized human waste discharged into the water 8 in the container 9 is separated into gas and liquid here, and the gas component is deodorized by the deodorant tool 18 attached to the exhaust port 17. After being smelled, it is released to the outside.

Then, the vibration and noise of the submersible pump 11 for sucking and pressurizing the water 8 in the container 9 during driving, the submersible pump 1
The sound and vibration generated when the water pressurized at 1 is jetted from the jet nozzle 12 to the negative pressure forming pipe 13, and suddenly when the human waste sucked from the suction pipe 7 is sucked into the negative pressure forming pipe 13. The volume expansion sound and vibration that cause the volume expansion, and the shock sound and vibration that are taken in contact with the mixed air jet flow are absorbed by the water 8 in the container 9.

Therefore, these vibrations and noises cause the container 9
It is prevented from leaking or dissipating to the outside of the.
Further, for example, noise leaked to the surface of the water in the container 9 through the suction pipe 7 is trapped in the container 9 so that it is prevented from being diffused to the surroundings.

By the way, if the container 9 is made of a bond steel plate having a sandwich structure in which an anti-vibration resin is sandwiched, that is, a so-called "vibration suppressing steel plate", the quietness of the device can be further enhanced.

<Embodiment 2> In this embodiment, as shown in FIG. 4, an upper end portion (top plate portion) 16 of a container 9 that can store water 8 in the above embodiment can be opened and closed. Submersible pump 11 A jet pump MJP is formed so as to inject the pressurized water downward, and the other configurations are the same as those in the first embodiment, and the operation is the same as that in the first embodiment. is there.

In each of the above embodiments, the jet pump MJ
Although P is a mixed air jet pump, instead of the mixed air jet flow, the pressure in the submersible pump 11 is increased, the diameter of the injection nozzle 12 is reduced, and a strong jet flow is generated in the negative pressure forming pipe 13. Needless to say, a large amount of negative pressure may be formed by causing the mixed-air jet flow to spread in the negative pressure forming pipe 13 on the large diameter side of the discharge port 19 while being fed while being expanded. .

In each of the above embodiments, the human waste treatment of bedridden patients in the hospital room is described as an example, but the present invention is not limited to such treatment, and the washing water used when the room is washed with water, and the powder and particles spilled into the room. It goes without saying that it can also be used when sucking the body.

Further, instead of the water 8, a chemical solution for disinfection, sterilization or the like is stored in the container 9 of each of the above-mentioned embodiments, and this is sucked and pressurized by the submersible pump 11, and this is negatively pressured from the injection nozzle 12. It is needless to say that a negative pressure may be formed by injecting into the forming pipe 13, and further, not only water or a chemical liquid but also a liquid such as oil, and this liquid can be used as a pressurizing fluid. Of course.

In addition, when the seismic and soundproof type negative pressure forming apparatus 4 of the present invention is used to suck and convey aspirated substances such as human waste, the conventional attachment of a reservoir tank or a receiver tank is not excluded but is provided. Of course, it is also good. In particular, when a solid substance that can not be sucked with a submersible pump is contained in the aspirated substance such as human waste, a reservoir tank or a receiver tank is used to separate the solid and the liquid in the reservoir tank or the receiver tank to obtain only the liquid. It is convenient to use as a pressure fluid.

In each of the above embodiments, the exhaust port 17 is opened to the room through the deodorant tool 18. The exhaust port 17 is connected to one end of the duct, though not shown. It is also possible to open the other end opening of the duct to the outside of the room, or to open it toward the drainage groove for drainage for direct discharge of human waste.

[0033]

As described above, the seismic and soundproof type negative pressure forming apparatus according to the present invention sucks and pressurizes the liquid in the container by the pressurizing means, and pressurizes the pressurized liquid from the liquid jet nozzle. Since the jet pump that forms a negative pressure in the injected negative pressure forming pipe is housed in the container and at least a part of the jet pump is submerged in the liquid in the container, the pressurizing means, particularly the jet pump The noise and vibration such as the sound of injection from the liquid injection nozzle into the negative pressure forming tube and the sound of suction when the volume of the suctioned material sucked into the negative pressure forming tube explosively expands due to the negative pressure generated here Absorbed by the liquid inside. Further, vibration and noise leaking from the liquid in the container into the container are trapped in the container and prevented from being diffused to the surroundings.

As a result, the negative pressure forming device can be made quiet with very little vibration and noise so that it can be installed in a room such as a hospital. There is an advantage that the device and the like are covered with a soundproof case wall, and it is not necessary to pipe from here to a desired suction place with a suction pipe, and the device can be made extremely compact.

Further, since the negative pressure forming device can be freely installed in a room such as a hospital, the negative pressure forming device can be conveniently carried in and carried together with the downsizing of the negative pressure forming device. There is also an advantage that the range of use can be greatly expanded.

Further, since it can be brought in or carried in a room such as a hospital, it is not necessary to provide a pipe from a vacuum device or the like installed outdoors to a suction place as in the conventional case, and the initial cost is correspondingly increased. Also has the advantage that it can be significantly reduced.

In addition, in the seismic and soundproof type negative pressure forming apparatus according to the present invention, since the negative pressure forming apparatus can be brought in or carried near the suction object, the suction path from the negative pressure forming apparatus to the suction object can be shortened. Therefore, there is an advantage that the negative pressure loss in the suction passage can be reduced as much as possible, and the energy consumption and the compactness can be further improved by making the pressurizing means small and having a small capacity.

In the seismic and soundproof type negative pressure forming apparatus according to the present invention, the suctioned substance is sucked by the negative pressure generated by the jet pump, and the sucked suctioned substance is discharged as it is from the discharge port of the jet pump. Therefore, there is also an advantage that the conventional receiver tank can be omitted, and that the receiver tank can be omitted to further reduce the size of the entire apparatus.

In addition, the suctioned material is sucked by the negative pressure generated by the jet pump, and the suctioned material is agitated by the jet stream during a series of suction / sending to be discharged from the discharge port, and the solid material is crushed and fluidized. Aeration is performed at the same time because it is promoted and comes into contact with a large amount of air, which is optimal when the aspirant is human waste.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a human waste treatment system using an earthquake-proof and sound-proof type negative pressure forming device according to a first embodiment.

FIG. 2 is a vertical cross-sectional view of the seismic isolation and soundproof type negative pressure forming device according to the first embodiment.

FIG. 3 is an enlarged view of a jet pump MJP portion of the seismic isolation and soundproof type negative pressure forming device according to the first embodiment.

FIG. 4 is a vertical cross-sectional view of an earthquake-proof and sound-proof negative pressure forming device according to a second embodiment.

[Explanation of symbols]

 4 ... Seismic and soundproof negative pressure forming device 5 ... Suction opening 6 ... Excretion part 7 ... Suction tube 8 ... Liquid (water) 9 ... Container 11 ... Pressurizing means ( Submersible pump) 12 ... Injection nozzle 13 ... Negative pressure forming tube 14 ... Suction port MJP ... Jet pump

Continuation of the front page (51) Int.Cl. ⁶ Identification code Reference number within the agency FI Technical display location // F04D 13/08 F04D 29/60 E 29/60 9052-4C A61G 9/00 Z

Claims (2)

[Claims] 1. A negative pressure is formed by a pressurizing means for sucking and pressurizing a liquid in a container, a liquid ejecting nozzle for ejecting the liquid pressurized by the pressurizing means, and a fluid ejected from the liquid ejecting nozzle. Forming a jet pump with a negative pressure forming pipe and a suction port communicating with the suction pipe in the negative pressure forming portion of the negative pressure forming pipe, and storing the jet pump in a container in which liquid is stored, and At least a part of the above is buried in the liquid stored in the container, and vibration and noise generated in the jet pump portion are absorbed by the liquid in the container. 2. The seismic-proof and sound-proof negative pressure generating device according to claim 1, wherein the suction opening of the suction pipe is opened toward the excretion part or the human waste.