JP2007051542A - Sewage stirring valve and pump unit using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sewage stirring valve avoiding environmental pollution caused by oil. <P>SOLUTION: The sewage stirring valve is formed with an inflow port into which sewage flows, an outlet port from which the sewage is discharged and a conduit guiding the sewage from the inlet port to the outlet port. The sewage stirring valve is formed with a first elastic film disposed on a position opposite to the inflow port, a hollow section disposed to the elastic film on the side opposite to the inlet port and a ball valve disposed downstream of the elastic film and upstream of the hollow section and capable of moving back and forth in the conduit. A damper capable of extending and shrinking according to the deformation of the film, a link mechanism disposed above the damper and vertically moving in conjunction with the extension and shrinkage of the damper and a second elastic film disposed to shut off the conduit and the hollow section from each other above the link mechanism and making displacement in conjunction with the vertical movement of the link mechanism are provided in the interior of the hollow section. The ball valve is moved vertically through the second elastic film. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a sewage stirring valve and a pump unit using the same, and more particularly to a sewage stirring valve installed in a sewage tank and a pump unit using the same.

In recent years, some sewage tanks such as manholes are provided with a pump unit for discharging sewage accumulated in the tank. The pump unit operates when a certain amount of sewage has accumulated and discharges the sewage, but the sewage corrodes and generates a strange odor and scum. Thus, corrosion of sewage, off-flavor, and scum are prevented (see, for example, Patent Document 1). In the sewage agitation valve (mixing valve) of Patent Document 1, the opening and closing operation is realized by a spherical movable valve element (valve ball). Here, diaphragms communicated with each other are provided below the upstream side and downstream side of the portion where the valve ball plugs, and the valve ball is disposed on the upstream diaphragm. A space made up of each diaphragm and valve is filled with a fluid such as oil. If no sewage is discharged, the upstream diaphragm is pushed down by the valve ball, and the downstream diaphragm is filled with oil. Thereafter, when the sewage is discharged, the downstream diaphragm is recessed due to the pressure difference caused by this flow, and the oil moves to the upstream diaphragm. As a result, the upstream diaphragm swells and the valve ball is raised. The valve ball then closes the valve along the flow of sewage.
Patent registration No. 2607839

  However, if the oil is directly filled into the valve like the sewage agitation valve described above and the valve is opened and closed by the oil, the oil will flow into the external circulation when the valve is damaged. As a result, there was a risk of inducing environmental pollution.

  An object of the present invention is to prevent environmental pollution caused by oil by allowing the valve to be opened and closed without filling the valve with oil.

The sewage agitation valve in the invention of claim 1 is:
An inlet through which sewage flows,
An outlet through which sewage is discharged;
A flow path for guiding sewage from the inlet to the outlet;
A first elastic membrane disposed at a position facing the inflow port to form the flow path;
A hollow portion disposed on the opposite side of the inlet to the first elastic membrane and below the flow path;
A spherical valve disposed downstream of the first elastic membrane and above the hollow portion, and capable of moving forward and backward in the flow path;
Inside the hollow part,
A damper that is arranged in contact with the first elastic membrane and expands and contracts in response to deformation of the first elastic membrane;
A link mechanism disposed above the damper and moving up and down in conjunction with expansion and contraction of the damper;
A second elastic film that is disposed so as to block the flow path and the hollow portion above the link mechanism, and is moved in conjunction with the vertical movement of the link mechanism; and
The spherical valve moves up and down through the second elastic film.

  According to the first aspect of the present invention, since the first elastic film is disposed at a position facing the inflow port, when the sewage is supplied by an external pump, the first elastic film flows from the inflow port. It will be pressed by the dirty water. The first elastic body film is recessed toward the inside of the hollow portion by the pressure at the time of pressing. Here, since the damper is disposed inside the hollow portion so as to be in contact with the first elastic film, when the first elastic film is recessed, the damper gradually contracts corresponding to the deformation. When the damper contracts, the link mechanism above the damper rises, so that the second elastic film that moves in conjunction with the link mechanism is pushed up. The spherical valve rises due to the transition of the second elastic membrane. As a result of this rise, the spherical valve is guided to the flow of sewage, and finally the spherical valve completely enters the flow path to close the flow path. Until the closed state, the sewage flowing in from the inflow port is discharged from the discharge port through the flow path and agitates the sewage outside the valve. Sewage is no longer discharged and stirring is stopped.

After that, when the external pump is stopped and the inflow of sewage from the inflow port is stopped, the first elastic membrane is not pressed against the sewage, so the damper is pushed back while pushing the first elastic membrane toward the inflow port. Elongate. When the damper is extended, the link mechanism above the damper is lowered, and the second elastic film is also lowered. When the inflow of sewage is stopped, the spherical valve falls on the second elastic film by its own weight, and further descends with the lowering of the second elastic film, and then retreats from the flow path. Open state.
As described above, since the sewage agitation valve is opened and closed by the expansion and contraction of the damper, it is not necessary to fill the valve with oil.

The sewage agitation valve in the invention of claim 2 is:
An inlet through which sewage flows,
An outlet through which sewage is discharged;
A flow path for guiding sewage from the inlet to the outlet;
A flow path valve for opening and closing the flow path;
A float unit that opens and closes the flow path valve by floating and sinking according to the amount of external sewage is provided.

According to the invention described in claim 2, since the flow path valve is opened and closed by the float part rising and falling,
When sewage accumulates in the sewage tank in which the sewage agitation valve is installed and the float part floats, the flow path valve is opened accordingly. Thereafter, when sewage is supplied to the inflow port by an external pump, the sewage is discharged from the discharge port through the flow path, and stirs the sewage outside the sewage stirring valve.

Here, while the external pump supplies sewage to the sewage agitation valve, the sewage in the sewage tank is also discharged out of the tank. Thereby, when the amount of sewage in the tank decreases and the float part sinks, the flow path valve is also closed. In the closed state, the flow of sewage stops and sewage is no longer discharged from the discharge port, and stirring is also stopped.
Thus, since the sewage agitation valve is opened and closed by the float and sink of the float part, it is not necessary to fill the valve with oil.

The invention according to claim 3 is the sewage agitation valve according to claim 2,
An auxiliary space extending upward from the flow path so as to be continuous with the flow path;
An air vent valve provided so as to be continuous with the auxiliary space, and for extracting air from the flow path and the auxiliary space;
A spherical valve holding portion disposed in the auxiliary space for contacting and holding the flow passage and the hollow spherical flow passage valve in the auxiliary space; and
A float part is provided that moves up and down the spherical valve holding part to move the flow path valve by floating and sinking corresponding to the amount of external sewage.

  According to the third aspect of the present invention, since the flow path valve is movable in the flow path and the auxiliary space, when the sewage is accumulated in the sewage agitation valve, the hollow sphere valve also rises and the auxiliary space extends from the flow path. Move to. At this time, the flow path valve is held in contact with the spherical valve holding portion. Thus, the flow path is opened, and the sewage can flow into the sewage agitation valve. Further, when sewage accumulates in the sewage tank in which the sewage agitation valve is installed and the float part is lifted, the spherical valve holding part is raised and the flow path valve is also raised. Thereafter, when sewage is supplied to the inflow port by an external pump, the sewage is discharged from the discharge port through the flow path, and stirs the sewage outside the sewage stirring valve.

Here, while the external pump supplies sewage to the sewage agitation valve, the sewage in the sewage tank is also discharged out of the tank. Thereby, when the amount of sewage in the tank decreases and the float part sinks, the spherical valve holding part also descends. When the flow path valve is also lowered in conjunction with this lowering, the flow path valve is guided by the flow of sewage and completely enters the flow path to close the flow path. In the closed state, the flow of sewage stops and sewage is no longer discharged from the discharge port, and stirring is also stopped.
Thus, since the sewage agitation valve is opened and closed by the float and sink of the float part, it is not necessary to fill the valve with oil.

The invention according to claim 4 is the sewage agitation valve according to claim 2,
The flow path valve and the float part are connected to each other.

  According to the fourth aspect of the present invention, since the flow path valve and the float part are connected, the float / sink operation of the float part can be directly transmitted to the flow path valve. For this reason, the flow path valve can be reliably opened and closed by the floating operation of the float part.

The pump unit in the invention according to claim 5 is:
The sewage agitation valve according to any one of claims 1 to 4,
A pressure feed pipe to which the sewage agitation valve is attached;
A pump for supplying sewage to the pressure feed pipe and the sewage agitation valve is provided.

  According to the invention described in claim 5, it is possible to obtain actions and effects equivalent to those of the invention described in any one of claims 1 to 4.

The sewage agitation valve in the invention of claim 6 is:
An inlet through which sewage flows,
An outlet through which sewage is discharged;
A flow path for guiding sewage from the inlet to the outlet;
An auxiliary space extending upward from the flow path so as to be continuous with the flow path;
A spherical valve that opens and closes the flow path by floating and sinking in the flow path and the auxiliary space;
A spherical valve holding portion for holding the spherical valve floating in the auxiliary space;
A check valve disposed above the spherical valve holding portion and capable of discharging air in the auxiliary space;
In the auxiliary space, the fluid valve is held when the spherical valve is open while the sewage in the auxiliary space is not discharged by the check valve by separating the spherical valve holding portion from the flow path. A separation region for generating a downward swirling flow from a part to the flow path is provided,
The spherical valve sinks due to the descending swirl flow and closes the flow path.

  According to the invention of claim 6, the flow path is opened and closed as the spherical valve floats and sinks in the flow path and the auxiliary space. Specifically, when the sewage accumulates in the sewage tank in which the sewage agitation valve is installed and the spherical valve rises in the flow path and the auxiliary space, the flow path is opened. Thereafter, when sewage is supplied to the inflow port by an external pump, the sewage is discharged from the discharge port through the flow path, and stirs the sewage outside the sewage stirring valve.

Here, when the sewage is supplied from the external pump to the sewage agitation valve, if the sewage water level in the tank is higher than the sphere valve holding position of the sphere holder, the sewage water level in the auxiliary space is also a sphere. Since it is higher than the valve holding position, the spherical valve is present in the sewage. When sewage is supplied from an external pump into the sewage agitation valve with the spherical valve open, a part of the sewage is discharged from the discharge port and the other part flows into the auxiliary space. At this time, if there is air in the auxiliary space, the air is discharged as the water level rises in the auxiliary space by the check valve. Even if the auxiliary space is filled with sewage, it is not discharged from the check valve. Thereafter, when sewage is supplied from an external pump, the sewage rises by forming an upward swirling flow along the wall surface forming the auxiliary space. At this time, since it is not discharged from the check valve, the sewage flows back into the flow path as a minute downward swirling flow descending at the center of the auxiliary space. The spherical valve held by the spherical valve holder is gradually lowered by the descending swirl flow, and then is guided by the flow of sewage in the flow path to close the flow path. In the closed state, the flow of sewage stops and sewage is no longer discharged from the discharge port, and stirring is also stopped.
Thus, since the sewage agitation valve is opened and closed by the rising and falling of the spherical valve, it is not necessary to fill the valve with oil.

By the way, in the sewage agitation valve that opens and closes the flow path valve by the above-described float part, the sewage water level in the tank directly affects the opening and closing of the float part, so it is difficult to sufficiently secure the agitation time. . However, in the case of the invention described in claim 6, since the spherical valve is gradually lowered by the downward swirling flow while being influenced by the upward swirling flow, it takes a considerable time until the flow path is closed. Can be secured. Thereby, it becomes possible to ensure sufficient stirring time.
Furthermore, since there are no movable parts other than the spherical valve and the check valve, the failure frequency can be suppressed.

The invention according to claim 7 is the sewage agitation valve according to claim 6,
The spherical valve holding portion is formed in a rod shape, and an upper end portion of the spherical valve holding portion is fixed to at least two points in the vertical direction with respect to the ceiling portion of the cylindrical body forming the auxiliary space, The spherical valve is held at the lower end portion of the spherical valve holding portion.

  According to the seventh aspect of the present invention, since the spherical valve holding part is formed in a rod shape, the unevenness of the spherical valve holding part itself can be reduced. Thereby, it is prevented that the residue etc. are entangled with the spherical valve holding part. Moreover, since the upper end part of the rod-shaped spherical valve holding part is fixed at least at two points, the spherical valve holding part can be prevented from shaking compared to the case where the spherical valve holding part is fixed at one point.

The invention according to claim 8 is the sewage agitation valve according to claim 7,
The surface of the spherical valve holder is provided with a scale that is visible from between the at least two points.

  According to the eighth aspect of the present invention, since the surface of the spherical valve holding portion is provided with a scale that can be visually recognized from between at least two fixed points, the spherical valve by the spherical valve holding portion can be easily provided from the outside. The holding position can be recognized.

The invention according to claim 9 is the sewage agitation valve according to claim 6,
The spherical valve holding part is a cylindrical ceiling part that forms the auxiliary space.

  According to the ninth aspect of the present invention, since the spherical valve holding portion is the ceiling portion of the cylindrical body, the spherical valve can be held without attaching a member dedicated to the spherical valve holding portion. As described above, when the member dedicated to the spherical valve holding portion can be omitted, it is possible to prevent foreign matters from being entangled with the member.

According to invention of Claim 10, in the sewage stirring valve as described in any one of Claims 6-9,
The discharge port is connected to a discharge pipe that is freely rotated by the discharge flow of the sewage.

  According to the invention described in claim 10, since the discharge pipe that freely rotates by the discharge flow of sewage is connected to the discharge port, it is possible to stir a wide range by this rotation, and enhance the stirring effect by the jet flow. be able to. If a wide range can be stirred in this way, the cleaning effect can be enhanced.

The pump unit according to the invention of claim 11 is
The sewage agitation valve according to any one of claims 6 to 10,
A pressure feed pipe to which the sewage agitation valve is attached;
A pump for supplying sewage to the pressure feed pipe and the sewage agitation valve is provided;
The check valve of the sewage agitation valve communicates with the pressure feed rod, and the check valve is closed by sewage flowing into the pressure feed pipe.

  According to invention of Claim 11, there can exist an effect equivalent to the invention as described in any one of Claims 6-10. In particular, since the check valve communicates with the pressure feeder, the check valve can be reliably closed even when sewage flows into the flow path or the pressure feeder, and the downward swirling flow is prevented. Can be secured.

  According to the present invention, since the valve can be opened and closed without filling the sewage agitation valve with oil, environmental pollution due to oil can be prevented.

[First Embodiment]
Hereinafter, a sewage agitation valve according to the present invention and a pump unit using the same will be described with reference to the drawings. FIG. 1 is a cross-sectional view illustrating a schematic configuration of the pump unit. As shown in FIG. 1, the pump unit 1 is installed in a sewage tank 2 in which sewage is collected, and discharges the sewage stored in the sewage tank 2. In the pump unit 1, a pair of pumping pipes 3 extending in the vertical direction for discharging the sewage accumulated in the sewage tank 2 and the upper ends of the pumping pipes 3 are connected in the horizontal direction, and each pumping pipe 3 A merging pipe 4 that collects sewage from the sewage tank 2 together, a pair of pumps 5 connected to the lower part of each pressure feed pipe 3 to supply sewage into the pressure feed pipe 3, and each pressure feed pipe 3 A pair of sewage agitation valves 100 for agitating the sewage in the sewage tank 2 are provided.

  FIG. 2 is a cross-sectional view illustrating a schematic configuration of the sewage agitation valve 100. As shown in FIG. 2, the sewage agitation valve 100 is formed with an inlet 101 through which sewage flows, a discharge port 102 through which sewage is discharged, and a flow path 103 that guides sewage from the inlet 101 to the discharge port 102. Has been. Further, a first elastic film 104 made of an elastic body is disposed at a position facing the inflow port 101, and a part of the flow path 103 is formed by the first elastic film 104. A hollow portion 105 is disposed on the opposite side of the inflow port 101 with respect to the first elastic film 104 and below the flow path 103.

  A damper 106 that expands and contracts in response to the deformation of the first elastic film 104 is installed in the hollow portion 105. The damper 106 is provided with a shaft 107 that expands and contracts in response to an external pressure, and a main body 108 that supports the shaft 107. The expansion direction of the shaft 107 and the expansion and contraction direction of the first elastic film 104 are Are arranged in parallel, and the damper 106 is arranged so that the tip surface of the shaft 107 is in contact with the first elastic film 104. As a result, when the first elastic membrane 104 is recessed toward the inside of the hollow portion 105, the shaft 107 is pressed by the first elastic membrane 104, and the shaft 107 of the damper 106 contracts. Further, when the first elastic film 104 returns to the original state, the shaft 107 is also extended by the urging force of the damper 106.

  In addition, a link mechanism 109 that is disposed above the damper 106 and moves up and down in conjunction with expansion and contraction of the damper 106 is provided inside the hollow portion 105. The link mechanism 109 includes a first link member 110 having a distal end portion rotatably connected to the upper surface of the distal end portion of the shaft 107, and a distal end portion rotatably connected to a proximal end portion of the first link member 110. The end portion is constituted by a second link member 111 rotatably connected to the upper surface of the substantially central portion of the main body portion 108 of the damper 106. Accordingly, the first link member 110 and the second link member 111 expand and contract in conjunction with the expansion and contraction operation of the shaft 107 of the damper 106. However, when the first link member 110 and the second link member 111 contract, 112 is raised, and the connecting portion 112 is lowered when extended.

  A second elastic film 113 is disposed above the link mechanism 109 so as to block the flow path 103 and the hollow portion 105. The second elastic film 113 is formed in a cup shape and supports a spherical valve 114 that opens and closes the flow path 103. That is, the spherical valve 114 is disposed on the downstream side of the first elastic membrane 104 and above the hollow portion 105. Further, the second elastic film 113 is disposed such that the lower surface thereof is in contact with the connecting portion 112 between the first link member 110 and the second link member 111. Thereby, when the connection part 112 of the link mechanism 109 rises and presses the second elastic body film 113, the second elastic body film 113 shifts, so that the spherical valve 114 rises. After that, when the connecting portion 112 of the link mechanism 109 is lowered and the pressure on the second elastic film 113 is released, the second elastic film 113 is restored, so that the spherical valve 114 is lowered by the restoration and its own weight. It is like that. The spherical valve 114 is movable back and forth in the flow path 103 via the second elastic film 113.

Next, the operation of this embodiment will be described.
The pump 5 operates immediately before the sewage tank 2 is filled with sewage, and sucks the sewage in the tub. Thereby, the sewage sucked from the pump 5 is supplied to the pressure feed pipe 3 and the sewage agitation valve 100. When the sewage is supplied to the pressure feed pipe 3, the sewage is directly discharged out of the tank through the junction pipe 4.

  On the other hand, when sewage is supplied to the sewage agitation valve 100, sewage flows from the inlet 101 as shown in FIG. 3, flows through the flow path 103, and is discharged from the outlet 102 (arrow A in the figure). reference). At this time, the first elastic body film 104 is pressed by the sewage flowing from the inlet 101, but since the biasing force is acting on the damper 106, the shaft 107 does not contract rapidly, and the first elastic body film 104 does not dent rapidly. Thereafter, as shown in FIG. 4, when the first elastic membrane 104 gradually dents toward the hollow portion 105 along with the flow of sewage, the shaft 107 of the damper 106 gradually contracts in response to the deformation. . When the shaft 107 contracts, the connecting portion 112 of the link mechanism 109 rises, and the bottom of the second elastic membrane 113 is pushed up to raise the spherical valve 114. This rise causes the spherical valve 114 to be guided by the flow of sewage, and finally the spherical valve 114 completely enters the flow path 103 as shown in FIG. 5 to close the flow path 103. . Until the closed state, the sewage flowing from the inflow port 101 is discharged from the discharge port 102 through the flow path 103 as shown by an arrow B in FIG. 4, and the sewage outside the sewage agitation valve 100 is agitated. In the closed state, the flow of sewage stops as indicated by arrow C in FIG. 5, and sewage is not discharged from the discharge port 102, and stirring is also stopped.

  After that, when the external pump 5 is stopped and the inflow of sewage from the inflow port 101 is stopped, the first elastic film 104 is also not pressed by the sewage, so the first elastic film 104 is directed toward the inflow port 101. The shaft 107 of the damper 106 extends while being pushed back. When the shaft 107 is extended, the connecting portion 112 of the link mechanism 109 is lowered, and the bottom portion of the second elastic film 113 is also lowered. Further, when the inflow of the sewage is stopped, the spherical valve 114 falls on the second elastic film 113 by its own weight, and further descends with the lowering of the second elastic film 113 and retreats from the flow path 103. Thus, the flow path 103 is opened.

  As described above, according to the first embodiment, since the sewage agitation valve 100 is opened and closed by the expansion and contraction of the damper 106, it is not necessary to fill the sewage agitation valve 100 with oil. Therefore, environmental pollution by oil can be prevented.

  When an oil damper is used as the damper 106, for example, oil exists in the sewage agitation valve 100. However, since the oil is filled in the damper 106, the oil is filled directly in the sewage agitation valve 100. It is hard to leak even if compared. In order to prevent environmental pollution more reliably, it is preferable to use a damper that does not use oil as the damper 106, such as a steel damper, a viscoelastic damper, a friction damper, an air damper, or the like.

  In this embodiment, the link mechanism 109 that moves up and down by extending and contracting in conjunction with the expansion and contraction of the damper 106 is described as an example of the link mechanism according to the present invention. Any device that moves up and down in conjunction with expansion and contraction may be used. For example, the link mechanism shown in FIG. 6 is configured by an arm 116 formed in a substantially square shape, and a base end portion thereof has a long hole 117 provided in a distal end portion of the shaft 107 and extending in the vertical direction. The tip part is in contact with the back surface of the second elastic film 113. As a result, the arm 116 is rotated in conjunction with the expansion and contraction of the shaft 107 to raise and lower the second elastic film 113 (FIG. 6 shows the lowered state of the second elastic film 113). FIG. 7 shows the raised state of the second elastic film 113.)

Here, if the relationship between the length a of the proximal end side straight portion 116a of the arm 116 and the length b of the distal end side straight portion 116b is set to “a> b”, the first elastic body film 114 has Even if the pressure is small, the second elastic membrane 113 can be displaced and the spherical valve 114 can be moved up and down. Furthermore, if the thrust of the damper 106 is adjusted to be weak, the spherical valve 114 can be raised and lowered even with a minute fluid pressure.
On the other hand, if the relationship between the length a of the base-side straight portion 116a and the length b of the distal-side straight portion 116b is set to “a <b”, the pressure applied to the first elastic film 114 is “ The second elastic film 113 cannot be changed unless it is at least larger than the case where a> b ”is set. It can also be insensitive to pressure fluctuations.
In this way, by adjusting the relationship between the length a of the base-side straight portion 116a and the length b of the tip-side straight portion 116b, or by adjusting the thrust of the damper 106, various purposes can be achieved. Can be manufactured.

  Moreover, in this embodiment, although the case where the sewage stirring valve 100 was arrange | positioned in the approximate center of the pumping pipe 3 was illustrated, in order to ensure higher stirring property, for example, as shown in FIG. You may arrange in. In this case, a discharge pipe 115 for discharging sewage from a position lower than the place where the sewage agitation valve 100 is installed can be connected to the discharge port 102 of the sewage agitation valve 100. Agitation from the position can be realized.

[Second Embodiment]
Hereinafter, a second embodiment will be described. Here, in the first embodiment, the configuration in which the sewage agitation valve 100 is opened and closed by using the expansion and contraction of the damper 106 is described as an example. However, in the second embodiment, the sewage tank 2 floats and sinks due to the sewage. A configuration in which the sewage agitation valve is opened and closed by using the float part will be described as an example. In the following description, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 9 is a side view illustrating a schematic configuration of the pump unit according to the second embodiment. As shown in FIG. 9, the pump unit 1 </ b> A is installed in the sewage tank 2 and discharges sewage accumulated in the sewage tank 2. The pump unit 1 </ b> A is provided with a pressure feed pipe 3, a junction pipe 4 (not shown in FIG. 9), a pump 5, and a sewage agitation valve 200.

  FIG. 10 is a cross-sectional view illustrating a schematic configuration of the sewage agitation valve 200. As shown in FIG. 10, the sewage agitation valve 200 is formed with an inlet 201 into which sewage flows, a discharge port 202 through which sewage is discharged, and a flow path 203 that guides sewage from the inlet 201 to the discharge port 202. Has been. In the middle of the flow path 203, an auxiliary space 204 extending upward from the flow path 203 is formed so as to be continuous with the flow path 203.

  In addition, a hollow sphere valve (flow path valve) 205 that opens and closes the flow path 203 is provided inside the sewage agitation valve 200 so as to be movable in the flow path 203 and the auxiliary space 204. Further, a substantially S-shaped air vent valve 206 is connected to the upper portion of the sewage agitation valve 200 so as to continue to the auxiliary space 204 and extract air from the flow path 203 and the auxiliary space 204. In addition, a spherical valve holding portion 210 that contacts and holds the hollow spherical valve 205 that has entered the auxiliary space 204 is disposed inside the auxiliary space 204.

  The spherical valve holding part 210 is provided with a spherical part 207 that can be moved up and down and overlaps the upper surface of the hollow spherical valve 205 in order to hold the hollow spherical valve 205.

In addition, a float unit 209 that raises and lowers the spherical surface unit 207 is provided on the upper part of the sewage agitation valve 200. The float portion 209 is provided with a spherical float 210 that floats and sinks depending on the amount of sewage in the sewage tank 2 and a connecting portion 211 that connects the spherical float 210 and the spherical portion 207 of the spherical valve holding portion 210. That is, when the spherical float 210 is in a floating state, the spherical portion 207 and the hollow sphere valve 205 held by the spherical portion 207 are disposed at the uppermost position, but when the spherical float 210 starts to sink, The part 207 and the hollow sphere valve 205 are also lowered.
A first bellows 208 and a second bellows portion 212 that extend and contract in conjunction with the up and down movement of the spherical float 210 are provided around the connecting portion 211.

Next, the operation of this embodiment will be described.
When sewage does not enter the sewage agitation valve 200, the hollow sphere valve 205 is disposed in the flow path 203 and closes the flow path 203 (see the solid line portion L1 in FIG. 10). Thereafter, when sewage accumulates in the sewage tank 2 and sewage accumulates in the sewage agitation valve 200, the hollow spherical valve 205 also rises and moves from the flow path 203 to the auxiliary space 204 (two points in FIG. 10). (See chain line portion L2). At this time, the hollow sphere valve 205 is held in contact with the spherical surface portion 207 of the sphere valve holding portion 210. Thus, the flow path 203 is opened, and the sewage can flow into the sewage agitation valve 200. Furthermore, when sewage accumulates in the sewage tank 2 and the spherical float 210 of the float part 209 rises, the spherical part 207 rises accordingly, and the hollow spherical valve 205 also rises (see the two-dot chain line part L3 in FIG. 10). ). Here, since the air in the flow path 203 and the auxiliary space 204 is discharged from the air vent valve 206 as the amount of dirty water increases, each ascending operation is performed smoothly.

  The pump 5 operates immediately before the sewage tank 2 is filled with sewage, and sucks the sewage in the tub. Thereby, the sewage sucked from the pump 5 is supplied to the pressure feed pipe 3 and the sewage agitation valve 200. When the sewage is supplied to the pressure feed pipe 3, the sewage is directly discharged out of the tank through the junction pipe 4.

  On the other hand, when sewage is supplied to the inflow port 201, the sewage is discharged from the discharge pipe 115 through the flow path 203 and the discharge port 202, and the sewage in the sewage tank 2 is stirred. Here, while the pump 5 supplies the sewage to the sewage agitation valve 200, the sewage in the sewage tank 2 is also discharged out of the tank. As a result, when the amount of sewage in the sewage tank 2 decreases and the spherical float 210 of the float part 209 sinks, the spherical part 207 of the spherical valve holding part 210 also descends. When the hollow sphere valve 205 is also lowered in conjunction with this lowering, the hollow sphere valve 205 is guided by the flow of sewage and enters completely into the flow path 203 to close the flow path 203 (FIG. 10 solid line portion L1). In the closed state, the flow of sewage stops, sewage is no longer discharged from the discharge port 202, and stirring is also stopped.

  As described above, according to the second embodiment, since the sewage agitation valve 200 is opened and closed by the rising and sinking of the spherical float 210 of the float unit 209, it is necessary to fill the sewage agitation valve 200 with oil. Disappear. Therefore, environmental pollution by oil can be prevented.

[Third Embodiment]
The third embodiment will be described below. Here, in the second embodiment, the configuration in which the float unit 209 indirectly opens and closes the hollow sphere valve 205 to open and close the sewage agitation valve 200 has been described. However, in the third embodiment, The configuration in which the float unit directly opens and closes the flow path valve will be described as an example. In the following description, the same parts as those of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The sewage agitation valve 300 of the third embodiment is installed in the pump unit 1A shown in FIG. 3 in the same manner as the sewage agitation valve 200 of the second embodiment. FIG. 11 is a cross-sectional view showing a schematic configuration of a sewage agitation valve 300 according to the third embodiment. As shown in FIG. 11, the sewage agitation valve 300 includes an inlet 301 into which sewage flows, a discharge port 302 through which sewage is discharged, and a flow path 303 that guides sewage from the inlet 301 to the discharge port 302. Is formed. The flow path 303 is formed along the horizontal direction as a whole, but only the central portion is formed along the vertical direction. The central portion 304 is provided with a pedestal 305 for closing the flow path 303.

  In addition, a flow path opening / closing portion 306 for closing the flow path 303 together with the pedestal 305 is provided above the pedestal 305 inside the sewage agitation valve 300. The flow path opening / closing section 306 is provided with an up and down flowable flow path valve 307 that closes the flow path 303 by plugging the pedestal 305 and opens the flow path 303 by separating from the pedestal 305. Yes.

In addition, a float unit 309 for raising and lowering the flow path valve 307 is provided on the upper part of the sewage agitation valve 300. The float 309 is provided with a spherical float 310 that floats and sinks depending on the amount of sewage in the sewage tank 2 and a connecting portion 311 that connects the spherical float 310 and the flow path valve 307. A first bellows portion 308 and a second bellows portion 312 that extend and contract in conjunction with the lifting and lowering operation of the flow path valve 307 are provided around the connecting portion 311.
When the spherical float 310 is in a floating state, the flow path valve 307 is separated from the pedestal 305, and when the spherical float 310 starts to sink, the flow path valve 307 is lowered and comes into close contact with the pedestal 305. That is, the float unit 309 is connected to the flow path valve 307 and floats and sinks corresponding to the amount of external sewage, thereby opening and closing the flow path valve 307.

Next, the operation of this embodiment will be described.
When the spherical float 310 of the float part 309 is in a sinked state, the flow path valve 307 is in close contact with the pedestal 305 and closes the flow path 303 (see the two-dot chain line part L4 in FIG. 11). Thereafter, when sewage accumulates in the sewage tank 2 and sewage also accumulates in the sewage agitation valve 300, the spherical float 310 rises, so that the flow path valve 307 is also lifted away from the pedestal 305 and separated from the flow path 303. Is in an open state (see the solid line portion L5 in FIG. 11). Thereby, sewage can be poured in the sewage agitation valve 300. The sewage that has passed through the sewage agitation valve 300 is discharged from the discharge pipe 115 to agitate the sewage in the sewage tank 2.

  While the pump 5 supplies sewage to the sewage agitation valve 300, the sewage in the sewage tank 2 is also discharged out of the sewage tank 2. As a result, when the amount of sewage in the sewage tank 2 decreases and the spherical float 310 of the float unit 309 sinks, the flow path valve 307 comes into close contact with the base 305 and closes the flow path 303 (see the two-dot chain line portion L4 in FIG. 11). ). In the closed state, the flow of sewage stops and sewage is not discharged from the discharge port 302, and stirring is also stopped.

  As described above, according to the third embodiment, since the sewage agitation valve 300 is opened and closed by the float and sink of the float unit 309, it is not necessary to fill the sewage agitation valve 300 with oil. Therefore, environmental pollution by oil can be prevented.

[Fourth Embodiment]
Hereinafter, a fourth embodiment will be described. Here, in the third embodiment, the configuration of opening and closing the flow path 303 by raising and lowering the flow path valve 307 has been described as an example. However, in this fourth embodiment, the flow path valve 307 is rotated. A configuration for opening and closing the flow path 303 by doing so will be described as an example. In the following description, the same parts as those of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The sewage agitation valve 400 of the fourth embodiment is installed in the pump unit 1A shown in FIG. 3 similarly to the sewage agitation valve 200 of the second embodiment. FIG. 12 is a cross-sectional view showing a schematic configuration of the sewage agitation valve 400 of the fourth embodiment. As shown in FIG. 12, the sewage agitation valve 400 includes an inlet 401 through which sewage flows, a discharge port 402 through which sewage is discharged, and a flow path 403 that guides sewage from the inlet 401 to the discharge port 402. Is formed. The channel 403 is formed along the horizontal direction as a whole. A pedestal 405 for closing the flow path 403 is provided at the center of the flow path 403.

  In addition, a flow path valve 406 for closing the flow path 403 together with the base 405 is provided above the base 405 inside the sewage agitation valve 400. The flow path valve 406 is pivotally supported on the downstream side, and rotates in the vertical direction around the shaft 407.

In addition, a float unit 409 for raising and lowering the flow path valve 406 is provided on the upper part of the sewage agitation valve 400. The float portion 409 is provided with a spherical float 410 that floats and sinks depending on the amount of sewage in the sewage tank 2 and a connecting portion 411 that connects the spherical float 410 and the flow path valve 406. Around the connecting portion 411, a first bellows 408 and a second bellows portion 412 are provided that expand and contract in conjunction with the up and down movement of the spherical float 410.
When the spherical float 410 is in a floating state, the flow path valve 406 is separated from the pedestal 405, and when the spherical float 410 starts to sink, the flow path valve 406 is rotated so as to be in close contact with the pedestal 405. . That is, the float part 409 opens and closes the flow path valve 406 by being connected to the flow path valve 406 and rising and falling according to the amount of external sewage. Here, since the flow path valve 406 rotates, the trajectory of the connection position between the connection portion 411 and the flow path valve 406 becomes an arc shape. That is, the connecting portion 411 slightly vibrates with the rotation of the flow path valve 406 (swaying in the left-right direction in FIG. 12). The hole 413 through which the connecting portion 411 passes is a long hole corresponding to the amplitude so that the connecting portion 411 moves up and down smoothly even if there is such vibration.

Next, the operation of this embodiment will be described.
When the spherical float 410 of the float part 409 is in a sinked state, the flow path valve 406 is in close contact with the pedestal 405 and closes the flow path 403 (see the two-dot chain line part L6 in FIG. 12). Thereafter, when sewage accumulates in the sewage tank 2 and sewage accumulates in the sewage agitation valve 400, the spherical float 410 rises, so that the flow path valve 406 also rotates upward and moves away from the base 405. The flow path 403 is opened (see the solid line portion L7 in FIG. 12). Thereby, sewage can be poured into the sewage agitation valve 400. The sewage that has passed through the sewage agitation valve 400 is discharged from the discharge pipe 115 and agitates the sewage in the sewage tank 2.

  While the pump 5 supplies sewage to the sewage agitation valve 400, the sewage in the sewage tank 2 is also discharged out of the sewage tank 2. As a result, when the amount of sewage in the sewage tank 2 decreases and the spherical float 410 of the float unit 409 sinks, the flow path valve 406 rotates downward to closely contact the pedestal 405 and close the flow path 403 (see 2 in FIG. 12). Dotted line part L6 reference). In the closed state, the flow of sewage stops and sewage is not discharged from the discharge port 402, and stirring is also stopped.

  As described above, according to the fourth embodiment, since the sewage agitation valve 400 is opened and closed by the float and sink of the float unit 409, it is not necessary to fill the sewage agitation valve 400 with oil. Therefore, environmental pollution by oil can be prevented.

  Here, in the case of a sewage agitation valve that operates the movable valve element by directly using the force of the fluid flowing inside, if the force of the fluid is different, each structural part is designed and set according to the force. There is a need. That is, in consideration of various conditions such as the output of the pump 5 and the total head, design and setting suitable for those conditions must be performed. However, if the sewage agitation valves 200, 300, and 400 are opened and closed using the floating and sinking operations of the float portions 209, 309, and 409 as in the second to fourth embodiments, the sewage flowing inside Because it does not directly use the power, it is not necessary to change the design and settings even if various conditions are different. Therefore, the efficiency at the time of design and installation can be increased.

[Fifth Embodiment]
The fifth embodiment will be described below. Here, in the second to fourth embodiments, the configuration in which the sewage agitation valves 200, 300, and 400 are opened and closed as the floats 209, 309, and 409 rise and fall has been described, but this fifth embodiment is described. In the embodiment, a configuration in which the sewage stirring valve is opened and closed by raising and lowering the spherical valve in the sewage stirring valve will be described as an example. In the following description, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 13 is a side view illustrating a schematic configuration of a pump unit according to the fifth embodiment. As shown in FIG. 13, the pump unit 1 </ b> B is installed in the sewage tank 2 and discharges sewage accumulated in the sewage tank 2. The pump unit 1B is provided with a pressure feeding pipe 3, a merging pipe 4 (not shown in FIG. 13), a pump 5, and a sewage agitation valve 500.

  Between the pressure feeding rod 3 and the junction rod 4, a pressure feeding ball check valve 6 and a partition ball valve 7 are provided. Inside the ball check valve 6 for pressure feeding rod, a hollow spherical ball valve is provided so that it can float and sink. Normally, the ball valve is seated inside the pressure check tube ball check valve 6 and closed, but when sewage flows from the pressure feed rod 3, the ball valve rises and opens. When it is in the open state, the sewage from the pressure feeder 3 flows out to the junction 4. An air vent rod 8 is disposed below the pressure feeding ball check valve 6 so as to communicate with the pressure feeding ball check valve 6.

  FIG. 14 is a cross-sectional view illustrating a schematic configuration of the sewage agitation valve 500. As shown in FIG. 14, the sewage agitation valve 500 is formed with an inlet 501 into which sewage flows, a discharge port 502 through which sewage is discharged, and a flow path 503 for guiding sewage from the inlet 501 to the discharge port 502. Has been. An auxiliary space 504 extending upward from the flow path 503 is formed in the middle of the flow path 503 so as to be continuous with the flow path 503.

  Further, inside the sewage agitation valve 500, a hollow spherical valve 505 that opens and closes the flow path 503 by being raised and lowered in the flow path 503 and the auxiliary space 504 is disposed. In addition, a spherical valve holding portion 506 that holds the floating spherical valve 505 is provided in the auxiliary space 504. The spherical valve holding portion 506 is formed in an inverted T shape in cross section, and its upper end is screwed to the ceiling portion 507 of the sewage agitation valve 500. Note that, by loosening the screw 508, the sphere holding portion 506 can be raised and lowered to adjust the sphere holding position.

  In addition, a check valve 509 communicating with the auxiliary space 504 is provided above the sewage agitation valve 500 so as to communicate with the pressure feeder 3. A hollow second spherical valve 510 is provided inside the check valve 509. When the sewage enters the auxiliary space 504, the second spherical valve 510 is separated from the inflow port 511 of the check valve 509 and is in an open state, so that air and sewage in the auxiliary space 504 are discharged. In addition, when water pressure is received from the pressure feeder 3, the second spherical valve 510 is brought into close contact with the inflow port 511, so that the sewage in the auxiliary space 504 is not discharged.

  The auxiliary space 504 is a fluid valve when the spherical valve 505 is open with the check valve 509 separating the sewage in the auxiliary space 504 from the spherical valve holding portion 504 to the flow path 503. A separation region 512 for generating a downward swirling flow from the holding unit 506 to the flow path 503 is provided. Specifically, a region from the lower end portion of the auxiliary space 504 to the spherical valve holding position of the spherical valve holding portion 506 is the separation region B. Since the separation region B is provided, a downward swirling flow is generated in the auxiliary space 504, and the spherical valve 505 is gradually settled by the downward swirling flow. The generation mechanism of the downward swirling flow will be described later.

Next, the operation of this embodiment will be described.
When sewage does not enter the sewage agitation valve 500, the spherical valve 505 is disposed in the flow path 503 and closes the flow path 503 (see the solid line portion L8 in FIG. 14). At this time, the second spherical valve 510 of the check valve 509 is separated from the inlet 511 and is in an open state (solid line portion L9 in FIG. 14).

  Thereafter, when sewage accumulates in the sewage tank 2 and sewage accumulates in the sewage agitation valve 500, the spherical valve 505 also rises and moves from the flow path 503 to the auxiliary space 504, and is moved by the spherical valve holding unit 506. It is held and further rising is restricted (see the two-dot chain line portion L10 in FIG. 14). As a result, the flow path 503 is opened, and the sewage can flow into the sewage agitation valve 500. At this time, the air in the auxiliary space 504 is discharged into the pressure feed rod 3 through the check valve 509 and discharged into the sewage tank 2 through the pressure feed ball check valve 6 and the air vent rod 8.

  The pump 5 operates immediately before the sewage tank 2 is filled with sewage, and sucks the sewage in the tub. Thereby, the sewage sucked from the pump 5 is supplied to the pressure feed pipe 3 and the sewage agitation valve 500. When the sewage is supplied to the pressure feeding pipe 3, the sewage is discharged as it is through the junction pipe 4, the pressure feeding ball 6 and the partition ball valve 7. At this time, the second spherical valve 510 of the check valve 509 is in close contact with the inlet 511 due to the water pressure in the pressure feeder 3 (see the solid line portion L11 in FIG. 14). Thereby, it is prevented that sewage flows backward from the pressure feeder 3 into the sewage agitation valve 500.

  On the other hand, when the sewage is supplied to the inlet 501 of the sewage agitation valve 500, the sphere valve 505 is in the sphere valve holding position and the sewage agitation valve 500 is open. For this reason, the sewage is discharged from the discharge pipe 115 through the flow path 503 and the discharge port 502 to stir the sewage in the sewage tank 2. At this time, part of the sewage enters the auxiliary space 504. During this approach, the sewage enters the auxiliary space 504 while forming an upward swirling flow α along the wall surface of the auxiliary space 504. The upward swirling flow α of the sewage descends while forming a small downward swirling flow β near the center of the auxiliary space 504 because the second spherical valve 510 of the check valve 509 is closed. Reflux in 503.

  The spherical valve 505 held by the spherical valve holding portion 506 is drawn toward the flow path 503 side while repeatedly moving up and down by the downward swirling flow β. Thereafter, when the spherical valve 505 is positioned at the lower end portion of the auxiliary space 504, the spherical valve 505 is guided by the flow of sewage in the flow path 503 and completely enters the flow path 503, thereby closing the flow path 503. (See the solid line L8 in FIG. 14). In the closed state, the flow of sewage in the sewage agitation valve 500 stops, so that the sewage is not discharged from the discharge port 502, and the agitation is also stopped. Thereby, sewage will flow only through the pressure feeder 3 and will be discharged out of the tank.

As described above, according to the fifth embodiment, since the sewage agitation valve 500 is opened and closed by the rising and falling of the spherical valve 505, there is no need to fill the valve with oil.
Since the spherical valve 505 is gradually lowered by the descending swirl flow β while being influenced by the ascending swirl flow α, a considerable time can be secured until the flow path 502 is closed. Thereby, it becomes possible to ensure sufficient stirring time.
Furthermore, since there are no movable parts other than the spherical valve 505 and the check valve 509, the failure frequency can be suppressed. Further, by changing the position of the spherical valve holder 506, it is possible to cope with a change in the output of the pump.

  By the way, in 5th Embodiment, the case where the pump 5 moved when the sewage tank 2 became full was illustrated and demonstrated, However, as for the movable timing of the pump 5, the water level in the auxiliary space 504 is a spherical body at least. It must be at a higher position than the spherical valve holding position of the valve holding portion 506. FIG. 15 is an explanatory diagram illustrating a case where the level of sewage is lower than the spherical valve holding position. As shown in FIG. 15, when the pump 5 is operated in a state where the sewage water level is lower than the spherical valve holding position, the sewage is supplied to the pressure feed pipe 3 and the check valve 509 is closed, and the auxiliary Sewage also flows into the space 504 to form an upward swirling flow α and a downward swirling flow β. At this time, since the spherical valve 504 is on the water surface, a surface tension F is applied to the spherical valve 504. Since the surface tension F is higher than the force acting on the spherical valve 504 than the downward swirling flow β, the spherical valve 504 is not lowered by the downward swirling flow β, and the sewage agitation is continued until the sewage supply by the pump 5 is stopped. The valve 500 is not closed. In order to prevent such a situation, at least when the water level in the auxiliary space 504 is higher than the spherical valve holding position of the spherical valve holding portion 506, the movable timing of the pump 5 must be set.

  Since the downward swirling flow β has different water flow depending on the output of the pump 5, the spherical valve 504 is made to flow by adjusting the spherical valve holding position by the spherical valve holding portion 506 according to the type of the pump 5 installed. Time to reach 503 is secured.

  Further, in the fifth embodiment, the case where the check valve 509 is communicated with the pressure feeder 3 has been described as an example, but the check valve is disposed higher than the spherical valve holding portion 506, and the auxiliary space As long as the air in 504 is discharged but the sewage in the auxiliary space 504 is not discharged, it may be anything. For example, as shown in FIG. 16, the cylinder 513 that forms the auxiliary space 504 is extended to a position higher than the full water position, and a check valve 514 is attached to the end thereof. The check valve 514 in this embodiment can be brought into a state in which the sewage in the auxiliary space 504 is not discharged by being closed by the pressure in the auxiliary space 504 when the pump is operated. It is not necessary to use the water pressure of 3 to be in the closed state.

  Further, in the fifth embodiment, the case where the spherical valve holding portion 506 is formed in a reverse T-shape in cross section is described as an example, but the shape of the spherical valve holding portion is not limited to this. For example, as shown in FIG. 17, the spherical valve holding part 515 may be formed in a rod shape. When the rod-like shape is used, the unevenness of the spherical valve holding portion 515 itself can be reduced, and residues and the like are prevented from being entangled with the spherical valve holding portion 515.

  As shown in FIG. 17, the upper end portion of the spherical valve holding portion 515 is fixed to the ceiling portion 517 of the cylindrical body 516 forming the auxiliary space 504 so that the position can be adjusted at least at two points in the vertical direction. Specifically, the ceiling portion 517 is provided with a through hole 518 through which the spherical valve holding portion 515 passes. In addition, a fixing portion 519 for fixing the spherical valve holding portion 515 penetrating the through hole 518 at two points in the vertical direction is provided on the upper portion of the ceiling portion 517. In this way, if the upper end portion of the spherical valve holding portion 515 is fixed at two points, the spherical valve holding portion 515 can be prevented from shaking compared to the case where the spherical valve holding portion 515 is fixed at one point. it can.

  The spherical valve holding portion 515 is fixed to the fixing portion 519 by a screw 520, but the position can be adjusted in the vertical direction by loosening the screw 520. Here, the surface of the spherical valve holding portion 515 is provided with a scale M that is visible from between two fixed points by the fixing portion 519, and the spherical valve holding position by the spherical valve holding portion 515 can be easily provided from the outside. Can be recognized.

  Further, as shown in FIG. 18, the ceiling portion 522 of the cylindrical body 521 forming the auxiliary space 504 may be used as a spherical valve holding portion. In such a case, the spherical valve 505 can be held without attaching a member dedicated to the spherical valve holding part. As described above, when the member dedicated to the spherical valve holding portion can be omitted, it is possible to prevent foreign matters from being entangled with the member. Since the height of the auxiliary space 504 is determined according to the flow rate of the pump 5, it is necessary to select the cylindrical body 521 according to the flow rate of the pump 5 when the pump 5 and the sewage stirring valve 500 are installed. For example, in the case of the pump 5 whose flow rate is larger than a predetermined amount, the cylinder 521a is selected so that the height of the auxiliary space 504 is high, and in the case of the pump 5 whose flow rate is smaller than the predetermined amount, the height of the auxiliary space 504 is high. The cylinder 521b to be lowered is selected.

Moreover, it is preferable to connect the discharge port 502 with a discharge pipe 523 that is freely rotated by the discharge flow of sewage as shown in FIG. The discharge pipe 523 is provided with a rotary flange 524 and a jet pipe 526 having a jet port 525 at a position shifted from the axial center of the rotary flange 524 on the downstream side of the rotary flange 524 (FIG. 19). (See (b)). When sewage flows into the discharge pipe 523, the sewage is ejected while the ejection pipe 525 is rotated by the discharge flow and the rotary flange 524. This rotation makes it possible to stir a wide range and enhance the stirring effect by the jet flow. If a wide range can be stirred in this way, the cleaning effect can be enhanced.
It is needless to say that the present invention is not limited to the above embodiment and can be modified as appropriate.

It is a side view showing the schematic structure of the pump unit which concerns on 1st Embodiment. It is sectional drawing showing schematic structure of the sewage stirring valve with which the pump unit of FIG. 1 is equipped. It is explanatory drawing showing the state which the sewage flowed in the sewage stirring valve of FIG. It is explanatory drawing showing the state which the sewage flowed in the sewage stirring valve of FIG. It is explanatory drawing showing the state which the sewage flowed in the sewage stirring valve of FIG. FIG. 6 is a diagram illustrating a modification of the link mechanism provided in the sewage agitation valve in FIG. 2, and is an explanatory diagram illustrating a lowered state of the second elastic film 113. It is explanatory drawing showing the raising state of the 2nd elastic body film | membrane 113 in the link mechanism of FIG. It is a side view showing the modification of the pump unit of FIG. It is a side view showing schematic structure of the pump unit which concerns on 2nd Embodiment. It is sectional drawing showing schematic structure of the sewage stirring valve with which the pump unit of FIG. 9 is equipped. It is sectional drawing showing schematic structure of the sewage stirring valve which concerns on 3rd Embodiment. It is sectional drawing showing schematic structure of the sewage stirring valve which concerns on 4th Embodiment. It is a side view showing schematic structure of the pump unit which concerns on 5th Embodiment. It is sectional drawing showing schematic structure of the sewage stirring valve with which the pump unit of FIG. 13 is equipped. It is sectional drawing showing schematic structure of the sewage stirring valve with which the pump unit of FIG. 13 is equipped. It is a side view showing the modification of the pump unit of FIG. It is explanatory drawing showing the modification of the sewage stirring valve of FIG. It is explanatory drawing showing the modification of the sewage stirring valve of FIG. It is explanatory drawing showing the modification of the sewage stirring valve of FIG. 14, (a) is a side view, (b) is a top view.

Explanation of symbols

1, 1A, 1B Pump unit 2 Sewage tank 3 Pressure feed pipe 4 Merge pipe 5 Pump 100, 200, 300, 400, 500 Sewage agitation valve 101, 201, 301, 401, 501 Inlet 102, 202, 302, 402, 502 Discharge port 103, 203, 303, 403, 503 Flow path 104 First elastic membrane 105 Hollow portion 106 Damper 107 Shaft 108 Body portion 109 Link mechanism 110 First link member 111 Second link member 112 Connection portion 113 Second elastic body Membrane 114 Spherical valve 115 Drain pipe 204 Auxiliary space 205 Hollow spherical valve (flow path valve)
206 Air vent valve 207 Spherical part 208, 308, 408 First bellows part 209, 309, 409 Float part 210 Spherical valve holding part 211, 311, 411 Connection part 212, 312, 412 Second bellows part 304 Central part 305, 405 Base 306 Flow path opening / closing section 307 Flow path valve 406 Flow path valve 407 Shaft 413 Hole section 504 Auxiliary space 505 Spherical valve holding section 509 Spherical valve holding section 509 Check valve 513, 516, 522 Cylindrical body B Spacing area M Scale α Ascending swivel Flow β descending swirl flow

Claims (11)

An inlet through which sewage flows,
An outlet through which sewage is discharged;
A flow path for guiding sewage from the inlet to the outlet;
A first elastic membrane disposed at a position facing the inflow port to form the flow path;
A hollow portion disposed on the opposite side of the inlet to the first elastic membrane and below the flow path;
A spherical valve disposed downstream of the first elastic membrane and above the hollow portion, and capable of moving forward and backward in the flow path;
Inside the hollow part,
A damper that is arranged in contact with the first elastic membrane and expands and contracts in response to deformation of the first elastic membrane;
A link mechanism disposed above the damper and moving up and down in conjunction with expansion and contraction of the damper;
A second elastic film that is disposed so as to block the flow path and the hollow portion above the link mechanism, and is moved in conjunction with the vertical movement of the link mechanism; and
The sewage agitation valve, wherein the spherical valve moves up and down through the second elastic membrane. An inlet through which sewage flows,
An outlet through which sewage is discharged;
A flow path for guiding sewage from the inlet to the outlet;
A flow path valve for opening and closing the flow path;
A sewage agitation valve, comprising: a float portion that opens and closes the flow path valve by floating and sinking corresponding to the amount of sewage outside. In the sewage agitation valve according to claim 2,
An auxiliary space extending upward from the flow path so as to be continuous with the flow path;
An air vent valve provided so as to be continuous with the auxiliary space, and for extracting air in the flow path and the auxiliary space;
A spherical valve holding portion disposed in the auxiliary space in order to contact and hold the flow path valve and the hollow sphere-shaped flow path valve that is movable in the auxiliary space;
A sewage agitation valve, comprising: a float part that moves up and down the spherical valve holding part to move the flow path valve by floating and sinking corresponding to the amount of sewage outside. In the sewage agitation valve according to claim 2,
The sewage agitation valve, wherein the flow path valve and the float part are connected. The sewage agitation valve according to any one of claims 1 to 4,
A pressure feed pipe to which the sewage agitation valve is attached;
A pump unit comprising a pump for supplying sewage to the pressure feed pipe and the sewage agitation valve. An inlet through which sewage flows,
An outlet through which sewage is discharged;
A flow path for guiding sewage from the inlet to the outlet;
An auxiliary space extending upward from the flow path so as to be continuous with the flow path;
A spherical valve that opens and closes the flow path by floating and sinking in the flow path and the auxiliary space;
A spherical valve holding portion for holding the spherical valve floating in the auxiliary space;
A check valve disposed above the spherical valve holding portion and capable of discharging air in the auxiliary space;
In the auxiliary space, the fluid valve is held when the spherical valve is in an open state in a state where the spherical valve holding portion is separated from the flow path and the sewage in the auxiliary space is not discharged by the check valve. A separation region for generating a downward swirling flow from a part to the flow path is provided,
The sewage agitation valve, wherein the spherical valve sinks due to the descending swirl flow and closes the flow path. The sewage agitation valve according to claim 6,
The spherical valve holding portion is formed in a rod shape, and an upper end portion of the spherical valve holding portion is fixed to at least two points in the vertical direction with respect to the ceiling portion of the cylindrical body forming the auxiliary space, A sewage agitation valve, wherein the spherical valve is held at the lower end of the spherical valve holding part. The sewage agitation valve according to claim 7,
A sewage agitation valve, wherein the surface of the spherical valve holding portion is provided with a scale that is visible from between the at least two points. The sewage agitation valve according to claim 6,
The sewage agitation valve according to claim 1, wherein the spherical valve holding portion is a cylindrical ceiling portion that forms the auxiliary space. In the sewage agitation valve according to any one of claims 6 to 9,
A waste water agitation valve, wherein a discharge pipe that is freely rotated by the discharge flow of the waste water is connected to the discharge port. The sewage agitation valve according to any one of claims 6 to 10,
A pressure feed pipe to which the sewage agitation valve is attached;
A pump for supplying sewage to the pressure feed pipe and the sewage agitation valve is provided;
The pump unit, wherein the check valve of the sewage agitation valve communicates with the pressure feed rod, and the check valve is closed by sewage flowing into the pressure feed pipe.

Images