JP2005111384A - Drainage apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress suction of air bubbles to the pump of a drainage apparatus and thereby to stabilize performance of the drainage apparatus and to prevent occurrence of noise. <P>SOLUTION: This drainage apparatus is constituted of a tank which temporarily receives waste water containing dirt, a crushing section which is located in the tank and crushes the dirt in the waste water, and a pump for discharging the waste water. A water suction port of the pump is provided at the bottom face of the pump and the crushing section is provided above the pump. Further, the drainage apparatus is provided with a flow straightening plate which is formed between the inner wall of the tank and the pump in nearly horizontal direction so as to be in contact with the pump and to surround the flank of the pump. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drainage device that discharges wastewater containing filth.

Conventionally, a tank provided with a manure inlet and a miscellaneous wastewater inlet, a pump connected to a pressure drainage pipe provided in the tank, a cutter installed above the submersible pump, and surrounding the cutter There has been proposed a drainage device configured with a screen for filtering inflowing sewage. (For example, refer to Patent Document 1.)
JP-A-4-290559 (page 4, FIG. 4)

Such a drainage device has the merit that the drainage pipe to be connected can be reduced to a diameter of about 20 to 30 mm by utilizing its characteristic pressure drainage capability, and a pipe material excellent in flexibility can be used. Therefore, by connecting the drainage device and equipment such as a toilet and a kitchen sink, it is possible to realize a movable drainage device that is excellent in workability at the time of installation and removal, and does not choose an installation location.
In addition, a series of operations of these drainage devices is such that the waste in the drainage that has flowed from the urine inlet flows into the screen and is crushed by the cutter, flows out of the screen together with the drainage, and falls below the tank. It is sucked and discharged out of the tank through the pressure feed drain pipe.

Here, in the drainage device disclosed in Patent Document 1, the drainage containing inflowing waste falls downward together with the waste crushed by the rotating cutter, and is sucked from the water inlet of the pump. When the said inflow waste_water | drain flows into the crushing part which has a cutter, it collides with the wall surface of the said tank, a screen, or a cutter, and winds up air. Furthermore, the inflow wastewater is stirred when the filth is pulverized by the cutter, entrains air, and diffuses around the filth and air bubbles that are pulverized as a jet from a small hole in the screen. Furthermore, when the inflow wastewater is accumulated and the water level rises to the cutter position, the inflow wastewater is agitated by the rotational movement of the cutter, and a vortex involving air bubbles is generated in the surroundings. Such a bubble flow swirls up and down, right and left in the vicinity of the cutter, and becomes a large bubble flow that reaches the suction port of the pump, particularly in a place near the wall of the tank.
Once the flow of bubbles is sucked into the pump, the drainage performance may be abruptly reduced or a loud noise may be generated due to bubble growth or rupture. In particular, bubbles generated in the vicinity of the boundary surface between the waste water and the air layer accumulated in the tank have a large particle size, and the above-described adverse effects are large.
Accordingly, when the equipment and the drainage device are connected and used, the performance of the drainage device as described above may affect the function of the equipment and cause malfunction.

  The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a tank that temporarily receives wastewater containing filth, and a pulverizer that pulverizes filth in the wastewater in the tank. A pump that discharges the crushed filth together with drainage, wherein the pump is provided with a water suction port on the bottom surface of the pump, and the pulverization unit is provided above the pump. It is to suppress and stabilize the performance of the drainage device.

  The invention according to claim 1 comprises a tank that temporarily receives wastewater containing waste, a pulverization unit that pulverizes waste in the wastewater in the tank, and a pump that discharges the crushed waste together with wastewater. In the drainage device in which the water inlet of the pump is provided on the bottom surface of the pump and the pulverizing part is provided above the pump, the pump is in a substantially horizontal direction so as to contact the pump and surround the side surface of the pump. A rectifying plate formed between the inner wall of the tank and the pump is provided.

  The invention according to claim 2 is characterized in that a part of the outer peripheral end of the current plate is provided in contact with the side wall of the tank.

  The invention according to claim 3 is characterized in that the rectifying plate has a side wall bent toward the bottom surface of the tank, and sucks waste water into the pump through a gap between the side wall of the rectifying plate and the tank bottom surface. To do.

  The invention according to claim 4 is characterized in that the pulverizing unit pulverizes filth using a rotational motion and is provided on the same rotating shaft as the pump.

The drainage device of the present invention discharges the wastewater flowing in from the equipment with pressure by a pump provided in the tank. Specifically, wastewater that flows in from a drainage inlet on the wall of the tank is introduced into the pulverization unit. Further, the solid waste contained in the waste water is pulverized by the pulverizing means provided in the pulverizing section and diffused to the surroundings together with the waste water.
The sewage containing the crushed filth is scattered in the circumferential direction of the pulverization unit, or sucked by a pump action into a water suction port provided on the bottom of the pump below the water. The flow of drainage from the pulverization section to the suction port of the pump mainly consists of a flow from the upper side to the lower side along the side wall of the pump and a vertical vortex generated by colliding with the side wall of the tank in the lateral direction. is there.
The direct flow from the top to the bottom along the side wall of the pump is blocked by the rectifying plate provided on the side wall of the pump, and a part of the flow is rectified from the upper surface side of the rectifying plate via the outer peripheral edge. Take a route that goes to the bottom side of the plate and goes to the water inlet.
At this time, the flow of the wastewater includes bubbles generated when the wastewater flows into the tank, when the filth is crushed by the pulverization unit, or when it collides with the wall of the tank. Most of the downward flow including the large-sized bubbles bounces upward on the upper surface of the current plate, and the bubbles disappear. Moreover, when the flow containing relatively small bubbles reaches the outer peripheral end along the upper surface of the rectifying plate, a part of the flow is divided and rides on the flow toward the water inlet.

  The invention according to claim 1 is provided with a current plate formed between the inner wall of the tank and the pump in a substantially horizontal direction so as to contact the pump and surround the side surface of the pump. It is possible to prevent the flow of bubbles generated as described above from being directly sucked from the water suction port. That is, by blocking the flow of bubbles up to the water intake port with the baffle plate, relatively large bubbles are lost during the flow, and some of the relatively small bubbles are sucked from the water intake port. Therefore, it is possible to effectively suppress the mixing of bubbles that significantly reduce the performance of the pump, and greatly contribute to the stabilization of the performance as equipment.

  As for the invention which concerns on Claim 2, a rectifying plate is installed in the side surface of a pump similarly to the drainage device of the said Claim 1, and a part of outer peripheral edge part of the rectifying plate was made to contact the side wall of the said tank. is there. Thus, in addition to the same effect as that of the first aspect, the bubble suction can be more effectively suppressed. That is, the flow of bubbles is a vertical vortex on the wall of the tank and is sucked into the pump suction port, so that the rectifying plate and the tank wall can be placed in contact with each other where the vortex is likely to occur. The downward flow of the vortex can be reliably blocked by the current plate.

For example, when a contact portion between the rectifying plate and the tank wall surface is provided at a particularly short position between the pulverization unit and the wall surface of the tank, the collision of the drainage from the pulverization unit to the tank wall surface in the above-described location Although the speed is high and the eddy current entrained by the bubbles generated by the collision is large, the flow of bubbles to the pump can be surely cut off by providing a rectifying plate in contact with the tank side wall immediately below.
In addition, when the contact portion is provided at a location where the distance between the pump and the tank wall is short, the flow rate of suction into the pump is high at the location as described above, and the flow of bubbles is also easily absorbed. By providing the flow straightening plate in contact with the tank side wall, the flow of bubbles to the pump can be reliably blocked.

  According to a third aspect of the present invention, the rectifying plate forms a suction space partitioned by a horizontal plane and the vertically-opened vertical wall around the water inlet of the pump, as in the first or second aspect. It also exhibits a shielding effect against the downward flow of bubbles and a shielding effect against the flow of bubbles in the horizontal direction. That is, the flow of air bubbles that travels around the outer peripheral edge of the current plate can further separate the air bubbles by the hanging wall and block most of the air bubbles.

  According to a fourth aspect of the present invention, the pulverizing unit and the pump are provided on the same rotating shaft, and the area of the rectifying plate can be kept small. According to the present invention, the pump is positioned directly below the pulverization unit by making the motor that is the power source of the pump and the pulverization unit the same as the rotation shaft. Therefore, the necessary effective current plate area can be minimized.

  Further, since the pulverizing section and the pump can be installed adjacent to each other in the vertical direction, the installation position of the drainage inlet of the tank can be lowered. That is, even if the height of the drainage port of the equipment is low, it can be connected to the drainage device, and the use range and versatility of the drainage device are enhanced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a first embodiment of a drainage device according to the present invention, and is an elevation view showing an internal structure. The drainage device 1 according to the present embodiment includes a drainage inlet 101 on the upper surface of the tank 100, the pulverization unit 200 and the pump 302 are arranged in parallel inside the tank 100, and the pressure drainage pipe 503 connected to the pump 302 includes the tank side wall 103. It is taken out from the outside.

  The pulverizing unit 200 includes a filter 201 having a plurality of small holes on a cylindrical wall surface, and pulverizing means 202 including a cutter and a mixer that rotate. The crushing unit 200 is provided with a driving motor 203 at the lower portion and is placed immediately below the drainage inlet 101, and a water conduit 502 is provided so as to communicate from the drainage inlet 101 to the opening above the filter 201.

The pump 302 is below the crushing unit 200, includes a leg 305, a driving motor 301 at the top, and a rectifying plate 400 installed on the pump side wall 303.
The rectifying plate 400 is located below the air vent hole 307 opened in the pump side wall 303 and is installed substantially horizontally so as to surround the pump 302 and the driving motor 203.

  An operation control unit 504 that electrically controls the driving of the crushing means 202 and the pump 302, and a water level sensor 501 that transmits drive and stop trigger signals to the operation control unit 504 are provided.

  An outline of the operation of the drainage device 1 will be described. Wastewater containing solid filth flows into the tank 100 from equipment (not shown) connected to the drainage inlet 101. When this drainage flows into the filter 201 through the water conduit 502, it goes out of the filter 201 through a plurality of holes in the wall surface of the filter 201, and the volume of water in the tank 100 gradually increases.

Solid waste in the wastewater that has flowed into the filter 201 is pulverized and subdivided by the rotational movement of the pulverizing means 202, and is scraped out of the filter 201 together with the drainage through a plurality of holes in the wall surface of the filter 201.
The drainage discharged to the outside of the filter 202 is sucked from a water suction port 304 provided on the bottom surface by driving the pump 302, and is drained and conveyed through a pressure feed drain pipe 503 to a sewer pipe connected further downstream.

  The driving of the crushing means 202 and the pump 302 is set so that the water level sensor 501 detects when the water level in the tank 100 rises and reaches a predetermined water level, and the driving motors 203 and 301 are turned on. Further, the driving of the pulverizing means 202 and the pump 302 is not limited to the above-described form. For example, the driving motors 203 and 301 are turned on in conjunction with the cleaning switch operation of the equipment not shown. Alternatively, for example, it may be set such that the driving motors 203 and 301 are turned on by detecting the flow of drainage into the tank 100.

  As a preferable aspect of the present invention, the installation height of the current plate is made lower than the position of the air vent hole provided in the spiral chamber of the pump. Thus, the pump suction flow on the lower surface side of the rectifying plate is not affected by the waste water ejected from the air vent hole when the pump is driven.

Moreover, as a preferable aspect of the present invention, the mounting portion of the rectifying plate on the side surface of the pump is flush with the bottom surface of the pump. This eliminates the step between the current plate and the bottom of the pump and reduces the loss of the suction flow of the pump.
As the pulverizing means of the pulverizing section of the present invention, any structure having a structure utilizing shearing force, sliding force, centrifugal force, striking force, and pressing force can be used as appropriate. For example, a cutter, a hammer, a mixer, a mill, etc. are used. There is a rotating body.

  FIG. 2 is an elevational view showing a state inside the tank 100 including drainage during operation of the first embodiment. The influence which the flow of the waste_water | drain in this drainage apparatus 1 has on a pump is demonstrated compared with embodiment of the conventional drainage apparatus shown in FIG.

  The conventional drainage device 1 shown in FIG. 8 has the same member structure as that obtained by removing the current plate 400 from the drainage device 1 of FIG. The drainage flow a flowing in from the drainage inflow port 101 falls downward as a dispersed flow c4 through the filter 201 in the initial stage of inflow. The falling wastewater collides with internal components such as the tank side wall 103, the tank bottom surface 102, the pump 302, the drive motors 203 and 301, and entrains the air.

  Further, when the water level in the tank 100 rises and the pulverizing means 202 and the pump 302 are driven and reach the water surface d, the waste water containing the solid waste pulverized by the rotational movement of the pulverizing means 202 is dispersed above the water surface d. Converted into a flow e and a flow c4 dispersed below the water surface d.

  The flow c4 dispersed below the water surface d collides with the tank side wall 103, the tank bottom surface 102, or internal components such as the pump 302 and the driving motors 203 and 301 in the same manner as described above, and vortexes. In particular, as shown in FIG. 8, when the water surface d is at the same level as the pulverizing means 202, the water surface is stirred most vigorously by the rotational movement of the pulverizing means 202, and air is entrained in the waste water, resulting in a flow of relatively large bubbles. . Further, the flow of bubbles partially forms a vertical vortex c1 between the tank bottom surface 102 and the water surface d, and the periphery of the pulverizing unit 200 becomes a particularly intense flow.

  Further, when the pump 302 is driven in the presence of the drainage flows c1 and c4 in the tank 100 as the bubble flow, a suction flow c2 to the water inlet 304 is formed, and the gap between the bottom surface of the pump 302 and the tank bottom surface 102 is formed. Then, the flow becomes higher and the pump 302 sucks a large amount of bubbles. As a result of sucking the bubbles, the drainage performance of the pump 302 is reduced if an air pocket is formed inside. Therefore, in order to avoid such a situation as much as possible, an air vent hole 307 is provided in the upper part of the pump 302. However, since the air vent hole 307 is a small hole provided to the minimum necessary, if a large amount of air bubbles are suddenly introduced into the pump 302, it cannot be immediately and completely eliminated. In the worst case, it falls into an airlock state and cannot be drained.

In addition, noise and vibration are generated due to the formation and destruction of the air pocket. When such an abnormality occurs, the user of the equipment does not obtain a satisfactory function, and feels uncomfortable due to noise and vibration. In the worst case, there is a risk of damage to the installation space due to the backflow of drainage water or water leakage.

  In the drainage device 1 of the present invention shown in FIG. 2, the state of drainage in the tank 100 is the same as that of the conventional drainage device. As shown in FIG. 2, in a state where the water level in the tank 100 rises and the pulverization unit and the pump unit are driven and reach the water surface d, the wastewater containing solid waste pulverized by the rotational movement of the pulverization means 202 is discharged to the water surface. It is converted into a flow e dispersed above d and a flow c4 dispersed below the water surface d.

  The drainage flow c4, which is a flow of relatively large bubbles by entraining air into the drainage by the stirring action of the crushing means 202, is an internal component such as the tank side wall 103, the rectifying plate 400, the pump 302, the driving motors 203, 301, and the like. Collide with and whirl. Further, the flow of bubbles partially forms a vertical vortex c1 between the current plate 400 and the water surface d, and the flow around the crushing part 200 becomes a particularly intense flow. Hardly reach.

  Further, when the pump 302 is driven in the presence of the drainage flows c1 and c4 in the tank 100 as the bubble flow, the suction flow c2 to the water inlet 304 becomes a substantially horizontal high-speed flow and the rectifying plate 400 and the tank. It is formed in a wide area between the bottom surface 102. The drainage sucked into the pump 302 includes a part of the drainage flows c1 and c4 that flows along the upper surface of the rectifying plate 400, and then divides and flows around the rectifying plate outer peripheral end 402. It is drainage with a low mixing rate mixed with relatively small bubbles. In this case, the amount of bubbles sucked into the pump 302 is small, and a fatal abnormal state as in the conventional example can be avoided.

  3 and 4 are a second embodiment of the drainage device of the present invention, and are an elevation view and a plan view showing the state inside the drainage device. The drainage device 1 shown in FIG. 3 includes a rectifying plate 400 on the pump side wall 303 as in the above embodiment. As shown in FIG. 4, three side contact portions 401 near the tank side wall 103 of the rectangular rectifying plate 400 are provided in contact with the tank side wall 103.

  The pulverizing unit 200 was provided with pulverizing means 202 composed of a cutter and a mixer for pulverizing solid filth by rotational movement, and a pump 302 was provided adjacent to the lower part. The crushing means 202 and the pump 302 are provided on the same rotating shaft 204 and are driven by the same driving motor 306.

  As in the previous embodiment, the inflow wastewater a forms drainage flows c1 and c4 through the water conduit 502 and the filter. Further, when the crushing means 202 and the pump 302 are driven, the influence of the collision with the tank side wall 103 is increased, and the vertical bubble mixed vortex c1 in FIG. 3 and the horizontal bubble mixed vortex c3 in FIG. 4 are formed. The vortex flows c1 and c3 are generated close to the water inlet 304 of the pump 302. However, the vortex flow is partitioned by the rectifying plate 400 so that the vortex flow does not reach the pump 302 directly. Further, in addition to the above-described aspect, the flow of the suction flow c2 of the pump 302 is not impaired without completely blocking the flow to the water suction port 304 at a part of the rectifying plate outer peripheral end 402 where the flow of bubbles does not reach. did. The suction flow c2 to the pump 302 that circulates from the rectifying plate outer peripheral end 402 does not include bubbles from the vortex flows c1 and c3.

As described above, the rectifying plate 400 is installed on the pump side wall 303, and further, a part of the rectifying plate 400 and the tank side wall 103 are provided in contact with each other. Even in the vicinity, the flow from the upper side of the rectifying plate 400 is completely blocked and does not reach the lower side, that is, the performance of the pump 302 can be maintained well and stably.
In addition, as described above, the necessary effective current plate area can be minimized by providing the crushing means 202 and the pump 302 adjacent to the same rotating shaft 204 in the vertical direction.

  5 and 6 are a third embodiment of the drainage device of the present invention, and are an elevation view and a plan view showing the state inside the drainage device. The drainage device 1 shown in FIG. 5 is provided with a rectifying plate 400 on the pump side wall 303 as in the above embodiment, and has a horizontal portion of the rectifying plate 400 at the same level as the pump bottom 307. Further, the rectifying plate 400 includes a hanging wall 404 that hangs from the outer peripheral end portion, and contacts the tank bottom surface 102 to support the pump 302. A suction space 308 is formed by the horizontal portion of the current plate 400, the vertical wall 404, and the tank bottom surface 102.

  The pulverizing unit 200 was provided with pulverizing means 202 composed of a cutter and a mixer for pulverizing solid filth by rotational movement, and a pump 302 was provided adjacent to the lower part. The crushing means 202 and the pump 302 are provided on the same rotating shaft 204 and are driven by the same driving motor 306.

  As shown in FIG. 6, drainage f flows into the suction space 308 from the suction water inlet 403. At this time, the rectifying plate 400 was formed such that the drainage f was allowed to flow from the suction water inlet 403 along the hanging wall 404 and the suction flow c <b> 2 swirled in the same direction as the rotation direction of the drive motor 306 was generated in the suction space 308.

  As in the previous embodiment, the inflow wastewater a forms drainage flows c1 and c4 through the water conduit 502 and the filter. Further, when the crushing means 202 and the pump 302 are driven, the influence of the collision with the tank side wall 103 is increased, and the vertical bubble mixed vortex c1 in FIG. 5 and the horizontal bubble mixed vortex c3 in FIG. 6 are formed. The vortex flows c1 and c3 are generated in the vicinity of the water inlet 304 of the pump 302, but the vortex flows into the pump 302 by partitioning the horizontal portion of the rectifying plate 400 and the vertical wall 404 except for the suction water inlet 403. Not directly. The suction flow c2 from the suction water inlet 403 to the pump 302 hardly sucks the vortex bubbles.

  In the embodiment of the present invention, the waste water flowing into the suction space 308 is formed so as to turn in the same direction as the rotation of the pump 302. The hanging wall 404 is erected in a substantially circular shape so as to follow the swirling of the drainage. The suction water inlet 403 is provided in a water conduit that extends the hanging wall 404 in the tangential direction. As a result, the flow of the inflowing drainage from the suction water introduction port 403 is joined along the vertical wall 404 in the same direction as the swirling flow.

Conventionally, in a state where the periphery of the pump water inlet 304 is almost closed, the suction flow c2 into the pump 302 is in the shape of the suction space 308, the shape of the suction water inlet 403, the state of the inner wall of the suction space 308, and the like. In some cases, local eddy currents and loss due to stagnation may occur.
As in the embodiment of the present invention, the suction space 308 is formed so that the suction flow c2 turns in the same direction as the rotation of the pump 302, so that the drainage flow at the suction water inlet 403 is smoothed and the suction space 308 is placed inside the suction space 308. Generation of local vortex and stagnation is suppressed, and the suction performance of the pump 302 is not lowered.

  Further, the horizontal component of the suction flow c2 in FIG. 6 travels from the suction water inlet 403 along the hanging wall 404 toward the water inlet 304 while turning clockwise in the same direction as the drive motor 306 toward FIG. Therefore, since the horizontal component of the suction flow c2 is not dispersed in multiple directions in the suction space 308, the suction efficiency of the pump is maintained well, and the discharge performance is not deteriorated.

  As described above, the flow straightening plate 400 having the vertical wall 404 is installed on the pump side wall 303 and the suction space 308 is formed. It is possible not to reach the suction space 308 from above the plate 400, that is, it is possible to keep the performance of the pump 302 well and stably.

  FIG. 7 is a fourth embodiment of the drainage device of the present invention, and shows a drainage pressure toilet 7 equipped with a drainage device 1 on the rear and a toilet 6 on the front. The drainage pumping toilet 7 of the present embodiment connects the toilet 6 and the drainage device 1 to enable reverse gradient drainage that is impossible with a conventional toilet. Further, a thin pipe of about 25 mm can be used as the drain pipe, and a flexible material can be adopted. As a result, it can be installed anywhere, and construction can be simplified.

  The drainage device 1 includes a current plate in the same manner as in the above embodiment. The toilet 6 includes two front legs 605, a toilet seat 604, a toilet bowl 601, an armrest 602, a decorative cover 606, and a backrest 603.

  The drainage pump 7 installed on the floor is connected to a joint (not shown) provided at the lower part of the drainage pump 7 with one end of a flexible drainage pipe 701 and a water supply pipe 702. A drainage pipe 701 and a water supply pipe 702 extending from the lower side of the drainage toilet 7 are laid on the floor along the same path, and communicate with a sewage main pipe and a water supply main pipe (not shown). Further, the drain pipe 701 and the water supply pipe 702 may be bundled with portions laid on the floor, and may further be provided with a heat insulating and protective cover.

  The drainage toilet 7 of this aspect can suppress the entrainment of bubbles in the pump in the drainage device 1. Therefore, the pump drainage performance rises quickly, and the wastewater treatment can be promptly performed with respect to the inflow of toilet drainage having a large instantaneous flow rate, and the toilet function is not affected.

  Moreover, even when the drainage pumping toilet 7 of the present invention is used in a residential room, it is possible to suppress the generation of noise due to air bubbles mixing into the pump provided in the drainage device 1. Therefore, for example, even when the drainage toilet 7 is used at night, it is not necessary to care for the residents in the next room or downstairs, and the drainage performance can be stably obtained, so that it can be used comfortably.

The elevation view which shows the internal structure of 1st embodiment of the drainage device of this invention. The elevation view which shows the internal structure of 1st embodiment of the drainage device of this invention. The elevation view which shows the internal structure of 2nd embodiment of the drainage device of this invention. The top view which shows the internal structure of 2nd embodiment of the drainage device of this invention. The elevation view which shows the internal structure of 3rd embodiment of the drainage device of this invention. The top view which shows the internal structure of 3rd embodiment of the drainage device of this invention. The perspective view which shows 4th embodiment of the drainage device of this invention. The elevation view which shows the internal structure of the conventional drainage device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drainage device 6 Toilet bowl 7 Drainage pressure toilet 100 Tank 101 Drainage inlet 102 Tank bottom face 103 Tank side wall 200 Grinding part 201 Filter 202 Grinding means 203, 301, 306 Driving motor 204 Rotating shaft 302 Pump 303 Pump side wall 304 Water inlet 305 Leg Portion 307 Air vent hole 308 Suction space 400 Rectifying plate 401 Contact portion 402 Outer peripheral edge 403 Suction water inlet 404 Drooping wall 501 Water level sensor 502 Water conduit 503 Pumping pipe 504 Operation control unit 601 Toilet bowl 602 Armrest 603 Backrest 604 Toilet seat 605 Front leg 606 Decorative cover 701 Drain pipe 702 Water supply pipe a Inflow drainage b Pressure drainage c1, c3, c4 Drain flow c2, f Suction flow d Water surface e Dispersed flow

Claims (4)

  A tank that temporarily receives wastewater containing waste, a pulverization unit that crushes the waste in the wastewater in the tank, and a pump that discharges the crushed waste together with the wastewater, and the water inlet of the pump is a pump In the drainage device provided on the bottom surface of the tank and the pulverization part is provided above the pump, the inner wall of the tank and the pump are arranged in a substantially horizontal direction so as to contact the pump and surround the side surface of the pump. A drainage device comprising a rectifying plate formed therebetween.   The drainage device according to claim 1, wherein a part of an outer peripheral end portion of the current plate is provided in contact with a side wall of the tank.   The said baffle plate has a side wall bent in the bottom face direction of the said tank, and a waste_water | drain is attracted | sucked to a pump through the clearance gap between the side wall of the said baffle plate and the said tank bottom face. Drainage equipment. The drainage device according to any one of claims 1 to 3, wherein the pulverization unit pulverizes filth using a rotational motion and is provided on the same rotation shaft as the pump.

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