JP2007170250A - Micro air bubble generating apparatus of liquid storage tank such as bathtub, and liquid circulation system having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized pump with reduced vibration noise, in which a relatively large discharge amount is secured without enlarging the diameter of a fluid introducing pipe in a reciprocating pump. <P>SOLUTION: An arbitrarily constituted piston member is installed in a cylinder sucking fluid so as to be free to reciprocate, and a drive means for making the piston member reciprocate is constituted of an eccentric cam installed on a rotational shaft of a drive motor or the like. The fluid introducing pipe is connected with the cylinder supplying the fluid through a suction valve, and a vibration insulating damper is disposed between the fluid introducing pipe and the suction valve so as to damp the vibration generated in the fluid. The vibration insulating damper may be constituted of a tank means, into which the fluid flowing from the fluid introducing pipe to the suction valve flows after branching and bypassing, and in which air or other expansive/contractive gas is stored. Or, the vibration insulating damper may be constituted of an elastically deformable bellows pipe pulsated according to fluid pressure in the fluid introducing pipe. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention provides two or more reciprocating pumps, for example, a reciprocating pump that includes a suction valve and a discharge valve that open and close by reciprocating movement of a plunger and discharges a fluid such as liquid or gas at a high pressure and two or more pump devices. The present invention relates to a fine bubble generating apparatus for cleaning or bathing that generates fine bubbles in a fluid to be used.

  In general, pump devices are roughly classified into reciprocating pumps and rotary pumps, and various types are known. The former reciprocating pump is equipped with a piston member that can reciprocate in a cylinder chamber, and the piston member is reciprocated by, for example, a drive cam so that fluid introduced into the cylinder chamber via a suction valve is discharged from the discharge port to a high pressure. The latter rotary pump is known as a structure in which a rotary blade, a screw blade and the like are rotatably mounted in a chamber and fluid from an inlet is discharged from an outlet by rotation of the blade member.

  On the other hand, the fine bubble generating device is used as a device for generating bubbles in various cleaning devices or a tank such as a bathtub, and in particular, at the same time as circulating cleaning fluid or hot water in the bath recently, For example, a device for mixing water has been used as a circulation system for bath water. Conventionally, as such a bubble generating device, as disclosed in Patent Document 1, air is mixed from an air pump when the fluid in the tank is pumped from the inlet by a pressure pump, and this is further pressurized by an accumulator. Then, a liquid flow containing bubbles is returned from the nozzle as a jet jet into the tank. As a pressurizing pump, a continuous liquid flow is formed mainly using a rotary pump. However, in order to quietly mix fine bubbles without forming jet jets in the bathtub and cleaning tank, a mixing tank is provided upstream of the bubble injection nozzle, and the fine bubbles are separated in this mixing tank. For example, Patent Document 2 proposes an apparatus for returning the tank.

The inventor of the present invention tried to configure the pump means for circulating the liquid with a primary side pump and a secondary side pump in order to reduce the size of such a fluid circulation device with low power consumption. In this case, in order to generate fine bubbles in a bathtub system or the like, it is necessary to mix high-pressure air in the circulating liquid and generate a fine bubble by vigorously diffusing the mixed fluid. Further, when the circulation pump is constituted by a reciprocating pump, it is possible to generate relatively small and fine bubbles. However, in the reciprocating pump, fluid is introduced from the circulation inflow pipe into the cylinder chamber via the suction valve. At that time, it was found that the opening and closing operation of the intake valve causes vibration and noise in the inflow pipe.
Japanese Patent No. 2663538 (FIG. 1) JP 2004-261314 A (FIG. 1) JP 2003-265938 A

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As described above, when liquid is supplied to a liquid storage tank such as a bathtub or a washing tank , or when the liquid in the tank is circulated, it is necessary to mix high-pressure air into the circulating flow path in order to generate fine bubbles. is there. In this case, conventionally, for example, as disclosed in Patent Document 3, a pump is disposed in the circulation path (pipe), an air compressor is disposed on the discharge side (downstream side) of the pump, and further on the downstream side. It is returned to a storage tank such as a bathtub through the gas-liquid mixing tank. For this reason, in order to mix sufficient air into the high-pressure liquid from the pump, a large compressor is required, and air cannot be evenly mixed into the entire liquid in the flow path. A mixing tank must be located downstream. Therefore, not only the whole system becomes large, but also the size of the air compressor (air pump) and the size of the gas-liquid mixing tank are particularly problematic.

Therefore, the present invention is capable of supplying high-pressure air from a relatively small capacity air pump when supplying or circulating a liquid to a liquid storage tank, and at the same time, a small size in which this high-pressure air and liquid are evenly mixed. The main issue is to provide a simple microbubble generator. Furthermore, this invention makes it the subject to provide the liquid circulation system which produces | generates a fine bubble when circulating the liquid in liquid storage tanks, such as a bathtub, and raises a warm bath effect.

To achieve the above object, the present invention employs the following configuration. A primary pump is connected to a liquid introduction pipe that supplies or circulates liquid to the liquid storage tank, a secondary pump connected in series to the primary pump is provided, and liquid is supplied from the discharge port of the secondary pump to the liquid storage tank. Supply with liquid feed pipe. Then, an air pump is connected so that high-pressure air is mixed into the suction port of the secondary pump. Thereby, the liquid from the liquid introduction pipe is sucked by the primary side pump and pressurized by the secondary side pump. At this time, high-pressure air is supplied from the air pump simultaneously to the liquid from the primary pump to the suction port of the secondary pump, and this liquid and high-pressure air are mixed in the chamber of the secondary pump and further increased in pressure. The

Therefore, the liquid and air are agitated almost uniformly and sent from the discharge port of the secondary pump to the feed pipe at a high pressure, so that sufficient air can be supplied from a relatively small capacity air pump, and at the same time the pump Gas-liquid stirring can be performed in the inside. The high-pressure air from the above-described air pump is connected so as to supply high-pressure air to a communication pipe that connects, for example, the discharge port of the primary pump and the suction port of the secondary pump.

The liquid circulation system according to the present invention constitutes a liquid storage tank such as a bathtub for storing liquid and a system for circulating high-pressure air in the liquid storage tank by liquid pump means. In this case, a liquid storage tank such as a bathtub for storing liquid, a liquid pump means having a liquid suction port and a discharge port, a liquid circulation pipe for circulating the liquid from the liquid storage tank to the suction port, A liquid feed pipe that feeds liquid from the discharge port to the liquid storage tank; and an air pump that mixes high-pressure air into the liquid from the suction port to the discharge port. The liquid pump means includes a primary side pump that sucks liquid from the liquid introduction pipe arranged in series and a secondary side pump that discharges liquid to the liquid supply pipe, and the air pump includes the secondary pump. Connect the high-pressure air to the inlet of the side pump. This makes it possible to fill the microbubbles in the tank while circulating the fluid in the liquid storage tank such as a bathtub.

In the present invention, the high pressure air from the air pump is mixed between the primary pump and the secondary pump as described above, so the high pressure air is discharged into the flow path of the liquid discharged from the conventional pump. Even if the capacity of the air pump is made smaller than the case where the air pump is injected, a sufficient amount of air can be mixed in the relatively low pressure flow path between the primary pump and the secondary pump. This makes it possible to fill the downstream storage tank with fine bubbles. At the same time, the mixed air is agitated while being compressed in the secondary pump, so that it is almost uniformly mixed and carried out from the feed pipe toward the liquid storage tank. The same effect can be obtained by using two separate pumps for the primary and secondary pumps. For this reason, in the past, a large mixing tank was provided on the downstream side of the feed pipe, and mixing was performed in this tank. It is possible to achieve a compact effect such as a compact configuration.

  The present invention will be described in detail below based on the preferred embodiments shown in the drawings. FIG. 1 is an overall layout diagram showing a fine bubble generating apparatus according to the present invention, and FIG. 2 is an explanatory view showing a fluid supply pump structure and a vibration damping damper structure built in the apparatus. FIG. 3 shows a mixing tank for mixing bubbles and circulating liquid and a discharge nozzle structure for fine bubbles. FIG. 4 shows the structure of a damper tank that constitutes a vibration damping damper.

First, the fine bubble generating apparatus according to the present invention will be described. As shown in FIG. 1, the fine bubble generating apparatus A is connected to a liquid storage tank (hereinafter referred to as a processing tank B) such as a cleaning tank or a bathtub. In the process of supplying a liquid L such as a cleaning liquid or warm bath water, a gas is injected and fine bubbles are mixed and filled in the processing tank B, and a system that obtains a cleaning effect and a warm bath effect by the fine bubbles is configured. This fine bubble generating apparatus A is configured as a circulation system that mixes bubbles in the process of circulating the liquid in the processing tank B, or supplies a new liquid that is not a circulating liquid into the processing tank B to supply the liquid in the processing tank B. It is configured as a gas-liquid supply system that mixes bubbles in the process of replacing the discharged processing liquid. The illustrated one shows the former circulation system. Hereinafter, the present invention will be described with respect to this circulation system, but the same applies to the latter gas-liquid supply system.

  Therefore, the fine bubble generating device A includes a liquid supply pump 25 for supplying the liquid L into the casing 20 subjected to soundproofing as shown in FIG. 1, an air pump 50 for supplying gas, and a mixing tank 9. Composed. The liquid supply pump 25 includes a suction port 26, a discharge port 27, a cylinder chamber S, and a piston member P, and the liquid introduction pipe 2 is connected to the suction port 26. The illustrated one forms a system in which the liquid introduction pipe 2 is connected to the processing tank B to circulate the liquid in the processing tank B. Although details of the liquid supply pump 25 will be described later, the liquid supply pump 25 is constituted by a reciprocating pump in which the piston member P reciprocates in the cylinder chamber S. The liquid supply pump 25 may be composed of a large-capacity single cylinder chamber S and a piston member P, but the illustrated one is a primary / secondary reciprocating pump for miniaturization, high pressure and low noise. It consists of.

  As shown in FIG. 1, it is composed of a primary pump head 25a and a secondary pump head 25b opposed in the horizontal direction, and the fluid flowing in and compressed by the primary pump head 25a is further compressed by the secondary pump head 25b to increase the pressure. The converted liquid is supplied to the mixing tank 9 through the gas-liquid supply pipe 31. For this reason, in the primary pump head 25a, the cylinder chamber S1, the suction valve 1a, the discharge valve 8a, and the joint valve 2a of the fluid introduction pipe 2 are respectively incorporated in the block member. Similarly, in the secondary pump head 25b, the cylinder chamber S2, the suction valve 29b, the discharge valve 8b, and the joint valve 31a of the gas-liquid supply pipe 31 connected to the discharge valve 8b are respectively incorporated in the block member. The primary pump head 25a and the secondary pump head 25b are fixed to the unit frame 21 with screws. The unit frame 21 is a bottom plate of the casing 20 through a wave absorber 22 such as rubber, felt, cotton, sponge, or the like. Is installed.

  The primary side discharge valve 8a and the secondary side suction valve 29b are connected by a communication pipe 70, and the fluid discharged from the primary side discharge port 27 flows into the secondary side suction valve 29b. An air pump 50 is connected to the communication pipe 70, compressed air is supplied from the air pump 50, and high pressure air is supplied into the secondary side cylinder chamber S2 simultaneously with the liquid to be compressed, and the secondary side discharge valve 8b. The gas-liquid fluid is supplied from the gas-liquid supply pipe 31 into the mixing tank 9 via the. In this case, the gas supply pipe 56 of the air pump 50 may be connected to the gas-liquid supply pipe 31, but the high-pressure air is introduced from the communication pipe 70 between the primary pump and the secondary pump where the fluid is relatively low in pressure. This is to increase the amount of air mixed in. The illustrated air pump 50 has the same structure as the previous liquid supply pump 25, and is composed of a primary side pump 50a and a secondary side pump 50b to reduce the size and pressure, and an inlet 51 of the primary side pump 50a. From the discharge port 55 of the secondary pump 50b, and high pressure air is supplied to the liquid supply pump 25.

  In the air pump 50, a primary pump 50a and a secondary pump 50b are arranged vertically in the vertical direction, and space saving is achieved in relation to the liquid supply pump 25 arranged in the horizontal direction. The structures of the liquid supply pump 25 and the air pump 50 will be described later, but both are constituted by a primary side pump and a secondary side pump. The cylinder chambers S1, S2 (S3, S4) and the piston member have substantially the same structure. P1 and P2 (P3, P4) are provided, and each piston member P1, P2 (P3, P4) is reciprocally operated by the driving means D.

  This drive means D has a cylinder chamber S1 (S3) and a cylinder chamber S2 (S4) arranged at positions opposed to each other by 180 degrees around a rotary cam member 65 supported by a rotary shaft 66 connected to a drive motor. Piston members P1 and P2 (P3 and P4) mounted in the chambers S1, S2 (S3, S4) are attached to the rotating cam member 65. When the piston member P1 (P3) is at the top dead center, the piston member P2 (P4) is connected to the rotating cam member 65 so as to be positioned at the bottom dead center, and performs a reciprocal supply / discharge operation.

  Therefore, as shown in FIGS. 2 and 4, the suction valve 1 a is arranged in a check valve structure at the suction port 26 of the primary pump head 25 a, and sucks liquid from the fluid introduction pipe 2 connected to the suction port 26. , Supplied to the cylinder chamber S1. Further, a discharge valve 8a is arranged in the normal check valve structure at the discharge port 27 of the cylinder chamber S1, and the liquid compressed in the cylinder chamber S1 is discharged from the discharge port 27. The discharge port 27 on the primary pump head 25a side is connected to the suction port 29 on the secondary pump head 25b side by a communication pipe 70, and supplies the fluid discharged from the cylinder chamber S1 to the cylinder chamber S2. Also in this cylinder chamber S2, a suction valve 29b is disposed at the suction port 29, and a discharge valve 8b is disposed at the discharge port 30 with a normal check valve structure. With such a configuration, the liquid sucked from the suction port 26 of the primary pump head 25a is discharged as a high-pressure fluid from the discharge port 30 of the secondary pump head 25b.

  The above-described air pump 50 is also composed of a primary side pump 50a and a secondary side pump 50b for miniaturization and high pressure. As shown in FIGS. 6 and 7, a check valve 51a is provided from the suction port 51 of the primary side pump 50a. Then, the air is sucked in through the air, compressed in the cylinder chamber S3, and supplied from the discharge port 52 to the cylinder chamber S4 of the secondary pump 50b through the communication pipe 53. The discharge valve 52a is disposed in the discharge port 52, and the suction valve 54a is disposed in the suction port 54 of the secondary pump 50b in a normal check valve structure. The discharge valve 55a is connected to the discharge port 55 of the secondary pump 50b. The high-pressure air is sent to the gas supply pipe 56 via the air supply pipe 56.

  The mixing tank 9 is composed of a tank chamber 9a for storing a liquid, and is configured to generate bubbles by mixing the liquid and gas supplied from the gas-liquid supply pipe 31 with each other. In the mixing tank 9, a bubble separating means 57 for separating generated bubbles into coarse bubbles and fine bubbles is constituted by any one of the following means.

  The first bubble separation means 57 is a partition wall 57a, which is composed of a partition wall that substantially divides the tank chamber 9a into two parts. The gas-liquid inlet 31a of the gas-liquid supply pipe 31 and the gas-liquid outlet of the gas-liquid carry-out pipe 59 59a is divided by a partition wall 57a. As a result, the coarse bubbles rise above the tank chamber, and the fine bubbles sink below, so that only the fine bubbles are guided to the gas-liquid outlet by the partition wall 57a.

  The second bubble sorting means 57 arranges the gas-liquid inlet 31a of the gas-liquid supply pipe 31 above the direction of the action of gravity, and arranges the gas-liquid outlet 59a of the gas-liquid carry-out pipe 59 below. A height difference H (57b in the drawing) is formed between the inlet 31a and the gas-liquid outlet 59a. As a result, the coarse bubbles rise upward and the fine bubbles sink downward, so that the fine bubbles are guided to the gas-liquid carry-out pipe 59.

  The third bubble sorting means 57 is a mesh filter 57c. A mesh filter 57c is provided around the gas-liquid outlet 59a of the gas-liquid carry-out pipe 59, and only a predetermined fine bubble passes through the mesh of the mesh filter 57c. To form. Such bubble separation means 57 may be arranged in the tank chamber 9a, or may be provided with the first, second and third configurations as shown. In addition, 58 shown in the figure is an excess bubble carry-out pipe, and the coarse bubbles remaining in the tank chamber 9a are carried out from the outlet 58a to the outside. In the figure, a drain tray 60 is provided at the bottom of the casing 20 described above. Coarse bubbles are dropped on the drain tray 60, and water droplets discharged to the drain tray 60 are discharged to the suction port 51 of the air pump 50 from the outside air. At the same time inhalation.

  As a result, surplus water generated in the fine bubble generator A is sucked together with the outside air from the air pump 50 and circulated to the mixing tank 9. Therefore, a porous member 61 such as a sponge is laid on the drain tray 60, and excess water is evaporated by the porous member 61. That is, in the fine bubble generating device A, liquid flows out from a damper tank that damps excess bubbles to remove coarse bubbles generated in the mixing tank 9 and attenuates vibration of a fluid introduction pipe, which will be described later. Is arranged in the drain tray 60 to promote vaporization without being provided with a special drain pipe and led to the suction port 51 of the air pump 50 from the drain tray 60 to be circulated to the mixing tank 9. It is like that.

  In the fine bubble generating apparatus A configured as described above, liquids such as washing water and bath water are supplied from the fluid introduction pipe 2 to the cylinder chamber S1 of the primary pump head 25a through the suction valve 1a by a pump operation described later. The At this time, if the reciprocating cycle of the piston member P is made fast as shown in FIG. However, pulsation occurs in the liquid flowing in the fluid introduction pipe 2 by the opening / closing operation of the suction valve 1a, and the fluid introduction pipe 2 vibrates. Since this vibration pulsates in a state where the fluid introduction pipe 2 is filled with liquid, the mass is large and the amplitude is also large. For example, when the number of opening / closing operations of the suction valve 1a is 10 Hz, the fluid introduction pipe 2 is shaken by a large vibration, and the joint portion (connecting valve, etc.) of the pipe is disconnected, causing a water leakage accident and generating a noise such as a loud driving sound. . The vibration due to the pulsation of the fluid introduction pipe 2 generates large vibrations and noise in proportion to the pipe diameter, and increasing the pipe diameter to suppress this causes an increase in the size of the apparatus in the case of a circulation system.

  In view of this, the present invention is provided with an anti-vibration damper 3 for attenuating vibration generated in the fluid between the suction port 26 of the liquid supply pump 25 and the fluid introduction pipe 2, and the structure thereof will be described in detail below. As shown in FIG. 4, a suction valve 1a is provided at the suction port 26 of the fluid supply pump 25. The illustrated suction valve 1a has a valve body 1a disposed in a flow path extending from the suction port 26 to the cylinder chamber S1. A structure is adopted in which the valve body 1a is pressed against a valve seat 1b formed of an elastic member by a spring 1c. Then, by reciprocating the piston member P1 in the cylinder chamber S1, the valve body 1a comes into pressure contact with and separates from the valve seat 1b, so that the fluid flows in from the fluid introduction pipe 2 during the intake of the piston member P1, and the piston member P1 During compression, the valve body 1a is closed to prevent backflow. In synchronism with the opening / closing operation of the valve body 1a, pulsation is generated in the fluid introduction pipe 2, and the pipe or a component in contact with the pipe vibrates.

  Therefore, a vibration damping damper 3 is provided on the fluid introduction pipe 2. 4 shows a case where the vibration damping damper shown in FIG. The tank means 4 is constituted by a tank into which the liquid in the fluid introduction pipe 2 flows, and is provided with an inlet / outlet path 4a branched from the fluid introduction pipe 2 and a liquid storage portion 4b for storing the liquid. When the suction valve 1a is closed and the liquid in the fluid introduction pipe 2 becomes high pressure, the liquid enters the liquid storage part 4b from the fluid introduction pipe 2, and when the suction valve 1a is opened, the liquid introduction pipe 2 side is opened. It is configured to flow out. The tank means 4 is arranged at a height position corresponding to the pressure of the liquid in the fluid introduction pipe 2. In other words, in the case of a circulation system, it is installed at the same level as the water level of the treatment layer, and in the case of a gas-liquid supply system for supplying new liquid to the treatment tank, it is at a height position corresponding to the water pressure of the liquid supplied to the fluid introduction pipe 2. Install.

  The tank means 4 configured to branch off from the fluid introduction pipe 2 so that the fluid in the pipe bypasses and circulates in the vicinity of the suction port 26 when the suction valve 1a is closed as shown in FIG. The water pressure in the pipe becomes dense and causes vibration, but the liquid in the pipe flows from the inlet / outlet path 4a into the liquid storage part 4b, and attenuates (reduces) the vibration generated in the pipe. When the intake valve 1a is opened, the liquid in the pipe is vigorously drawn into the cylinder chamber S1 and the water pressure becomes dense and causes vibrations in the pipe. At this time, the vicinity of the inlet becomes rough, but this is relieved by the liquid circulating from the tank means 4 into the pipe to reduce vibration.

  Next, FIG. 5 shows a case where the vibration damping damper 3 is constituted by a bellows tube 12 that can be expanded and contracted. An anti-vibration damper 3 shown in FIG. 5 includes a bellows pipe 12, and includes an inlet / outlet path 12a that branches from the fluid introduction pipe 2 and flows in and circulates a liquid, and an elastic liquid storage section 12b that includes the inlet / outlet path 12a. Constitute. When the suction valve 1a is closed and the liquid in the pipe becomes high pressure, the liquid enters the liquid storage part 12b from the pipe, and the bellows pipe 12 expands. On the contrary, when the suction valve 1a is opened and the water pressure of the fluid introduction pipe 2 decreases, the suction valve 1a flows out from the liquid storage part 12b to the fluid introduction pipe 2 side. The liquid storage part 4b is formed by an expandable / contractible bellows tube 12.

  Thus, when the suction valve 1a is closed, the vibration damping damper 3 constituted by the bellows pipe 12 branching from the fluid introduction pipe 2 and detouring the fluid in the pipe and flowing into the liquid storage part 4b is formed in the suction port. The water pressure in the pipe in the vicinity of the pipe 26 becomes dense and causes vibration. At this time, the liquid in the pipe that has become high pressure flows into the liquid storage part 12b from the inlet / outlet path 12a and attenuates the vibration generated in the pipe. (Reduce). When the intake valve 1a is opened, the liquid in the pipe is vigorously drawn into the cylinder chamber S1 and the water pressure becomes dense and causes vibrations in the pipe. At this time, the vicinity of the inlet becomes rough, but this is relieved by the liquid circulating from the bellows pipe 12 into the pipe, thereby reducing vibration. In this way, the bellows pipe 12 expands and contracts in accordance with the opening and closing of the suction valve 1a in the length Hb of the pipe in FIG. If the liquid storage part 12b is configured by the telescopic bellows tube 12 or the like in such a sealed state, the liquid inside does not leak and the installation position (installation height, etc.) of the vibration damper 3 is limited. System installation work becomes easier.

  Next, the configuration of the liquid supply pump 25 and the air pump 50 will be described in detail with reference to FIG. 5 and 6 show the structure of the air pump 50 that sends air to the discharge portion by the cylinder chamber S and the piston member P that reciprocally moves in the cylinder chamber S. FIG. In the illustrated example, a pair of pump heads 50a and 50b and a drive mechanism for driving a piston that sends fluid to the pump heads 50a and 50b are incorporated between a front frame 63 and a back frame 64. The pump heads P3 and P4 have the same structure and are provided with discharge chambers 62a and 62b, cylinder chambers S3 and S4 into which air flows into the discharge chambers 62a and 62b, and piston members P3 and P4, respectively. Since the structure is the same, one of them will be described below.

  The illustrated cylinder chambers S3 and S4 are configured by hollow cylindrical openings respectively drilled in an upper frame and a lower frame attached between the front frame 63 and the rear frame 64. Pump heads 50a and 50b having a vent hole 51c are connected to the cylinder chamber S3, and a suction port 51 and a vent hole 51c through which outside air flows are provided in the cylinder chamber S3. Gas is introduced from the air holes 51 c and sent from the discharge port 52 to the communication pipe 53.

  Therefore, piston members P3 and P4 are fitted in the cylinder chambers S3 and S4 so as to be able to reciprocate. The piston members P3 and P4 are driven by a rotating cam member 65. The rotating cam member 65 includes eccentric rotating bodies 67a and 67b fixed (for example, press-fitted) to a rotating shaft 66 supported by a bearing between the front frame 63 and the back frame 64. The eccentric rotating bodies 67a and 67b are As shown in FIG. 6, they are arranged so as to be symmetrical at positions separated by 180 degrees with respect to the axis, and are connected so that the eccentric rotating body 67a follows the piston member P3 and the eccentric rotating body 67b follows the piston member P4. ing.

BRIEF DESCRIPTION OF THE DRAWINGS The whole layout explanatory drawing of the microbubble generator concerning this invention. It is explanatory drawing which shows the structure of the reciprocating pump in the apparatus of FIG. 1, The figure (a) is a front view, The figure (b) is a side view. Explanatory drawing which shows the internal structure of the mixing tank in the apparatus of FIG. Explanatory drawing which shows the vibration isolator in the apparatus of FIG. Explanatory drawing which shows embodiment of the vibration isolator different from FIG. The front view of the detailed structure of the reciprocating pump in the apparatus of FIG. The side view of the detailed structure of the reciprocating pump in the apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a Suction valve 2 Fluid introduction pipe 3 Anti-vibration damper 4 Tank means 9 Mixing tank 12 Bellows pipe 25 Liquid supply pump 31 Gas-liquid supply pipe 50 Air pump 57 Bubble separation means A Fine bubble generator B Processing tank (liquid storage layer)

Claims (6)

A cylinder for sucking fluid;
A piston member reciprocally mounted on the cylinder;
A pump head comprising the cylinder and the piston member;
Drive means for reciprocating the piston member;
A suction valve disposed in the cylinder;
A fluid introduction pipe for supplying fluid to the cylinder via the suction valve;
A reciprocating pump comprising:
An anti-vibration damper is provided between the fluid introduction pipe and the suction valve to dampen vibration generated in the fluid,
The fluid introduction pipe is connected to the cylinder via a check valve;
The pump head includes the cylinder, the vibration damping damper, and the suction valve,
A reciprocating pump characterized in that a unit frame to which the pump head and the driving means are attached is installed on a case or other structure through a wave absorber such as rubber, felt, cotton, sponge or the like. The anti-vibration damper is disposed between the fluid introduction pipe and the cylinder, and is composed of tank means for diverting a fluid from the fluid introduction pipe to the intake valve and bypassing the air. The reciprocating pump according to claim 1, wherein the expansion / contraction gas is accommodated. The anti-vibration damper is disposed between the fluid introduction pipe and the cylinder, and is composed of an elastically deformable bellows pipe that pulsates according to a fluid pressure in the fluid introduction pipe. 2. A reciprocating pump according to 1. A cylinder for sucking fluid;
A piston member reciprocally mounted on the cylinder;
Drive means for reciprocating the piston member;
A suction valve coupled to the cylinder;
A fluid introduction pipe for supplying fluid to the cylinder via the suction valve;
A discharge valve provided in the cylinder;
A mixing tank containing fluid from the discharge valve;
Air blowing means for introducing high-pressure air into the mixing tank, and fine bubble sorting means for separating bubbles in the mixing tank;
A bubble jetting means for jetting out the bubbles sorted by the fine bubble sorting means,
An apparatus for generating fine bubbles, characterized in that an anti-vibration damper for attenuating vibration generated in a fluid is provided between the fluid introduction pipe and the suction valve. The anti-vibration damper is provided with the structure according to any one of claims 2 to 4, and a fine bubble generator. The cylinder is composed of first and second at least two cylinder chambers, and the piston member is provided in each of the first and second cylinder chambers,
The drive means comprises a drive rotary shaft and an eccentric cam means mounted on the drive rotary shaft,
The eccentric cam means is connected to the piston member of the first cylinder chamber and the piston member of the second cylinder chamber so that the fluid discharge timing is different,
6. The fine bubble generating device according to claim 4, wherein the discharge fluid from the first cylinder is pressurized by the second cylinder and flows into the mixing tank.

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