JP5105924B2 - underwater pump - Google Patents

Description

  The present invention relates to a submersible pump.

2. Description of the Related Art Conventionally, for example, a submersible pump temporarily installed in a building hole is known in order to discharge water accumulated in a building hole in a construction site or the like (see, for example, Patent Document 1). This submersible pump includes a pump body in which a motor and an impeller are accommodated. A power supply cable for supplying power to the motor is connected to the pump body, and a carrying handle is attached to the upper surface of the pump body.
JP 2002-70789 A

  By the way, when using such a submersible pump, usually, a rope or the like is tied to the carrying handle, and the pump body is sent into a building hole or pulled out from a building hole while being suspended by the rope. To do.

  However, for reasons such as the pump body being relatively lightweight, the pump body can be fed into the building hole or pulled out of the building hole with the pump body suspended by the power supply cable without using a rope. There are cases where it is used. In that case, when the pump body is suspended, a large impact load is applied to the connection position between the power supply cable and the cable boot, which may cause, for example, disconnection of the power supply cable.

  Therefore, for example, in the submersible pump described in Patent Document 1, a groove in which the power supply cable can be inserted is formed on the lower surface of the leg portion of the carrying handle, and a middle portion of the power supply cable is inserted into the groove. By fixing the carrying handle to the pump body, the middle part of the power supply cable is fixed to the pump body. By doing so, even if the pump body is suspended by the power supply cable, it is possible to prevent the load from acting on the connection position between the power supply cable and the cable boot, and to prevent disconnection of the power supply cable. I have to.

  However, in the structure of Patent Document 1, since the middle part of the power supply cable is pressed and fixed by the carrying handle, when it is suspended by the power supply cable, it is fixed to the fixed part in the middle of the power supply cable. An impact load acts on the boundary with the unexposed portion, and the power feeding cable is bent sharply at the boundary and the stress is concentrated. Therefore, there is a possibility that disconnection may occur at that portion.

  The present invention has been made in view of the above points, and the object of the present invention is to prevent occurrence of disconnection of the power supply cable even if the pump body is suspended by the power supply cable. is there.

  The present invention relates to a submersible pump that is temporarily installed in a water reservoir in which water is stored and discharges the water from the water reservoir to the outside.

  According to one aspect of the present invention, a submersible pump has a pump body having a suction port formed at a lower end portion thereof and a discharge port formed at an upper end portion thereof, and is arranged extending in a predetermined direction on the upper surface of the pump body. A carrying handle comprising: a gripping portion that is provided and gripped by a hand; and two legs that extend downward from both ends of the gripping portion and are fixed to the upper surface of the pump body; and the pump body A cable boot disposed on one side of both sides sandwiching the grip portion of the carrying handle, and a power supply cable connected to the cable boot and for supplying power to the pump body. Prepare.

At least a lower surface of the grip portion of the carrying handle is provided with a guide portion that guides the power supply cable by engaging the power supply cable in an unfixed state, and the power supply cable sandwiches the grip portion. On the other side, a first bending portion that curves from the cable boot to the guide portion of the gripping portion, and continuous with the first bending portion and facing away from the first bending portion by the gripping portion. And a second bending portion that is curved to the other side of the grip portion, and the pump body includes the first and second bending portions. While being suspended by the power supply cable, the water is fed into the water reservoir and drawn out from the water reservoir.

  According to this configuration, the guide portion for guiding the power feeding cable is provided on at least the lower surface of the grip portion of the carrying handle, and the power feeding cable is bent on one side across the grip portion using the guide portion. The first bending portion and the second bending portion that bends in the direction opposite to the first bending portion are formed by the gripping portion, and are arranged so as to reach the other side with the gripping portion interposed therebetween. As a result, when the pump main body is suspended by the power supply cable, the power supply cable is deformed so as to be in close contact with the gripping portion at the second curved portion, so that friction is generated between the power supply cable and the gripping portion. Force will be generated. Due to the frictional force, the impact load acting on the connection portion between the power supply cable and the cable boot is alleviated.

  In addition, when the pump main body is suspended by the power supply cable, the weight of the pump main body is distributed even at the second curved portion without receiving the total weight of the pump main body at the connection portion between the power supply cable and the cable boot. Therefore, the stress concentration at the connecting portion is eliminated.

  That is, the first and second curved portions are formed using the elasticity against the bending of the power supply cable without fixing the power supply cable, and the power supply cable is disposed so that the pump main body is provided by the power supply cable. Even if the pump body is put into a suspended state and the pump main body is fed into the water storage section or pulled out of the water storage section, disconnection of the power supply cable is suppressed.

  In addition, since the power feeding cable is guided by the carrying handle, there is no need to separately provide parts and there is an advantage that the number of parts does not increase.

  The cable boot is disposed in the vicinity of one of the two leg portions of the carrying handle, and the guide portion includes a leg portion closer to the cable boot and the grip portion. It is good also as being provided in the joint part.

  By doing so, since the power feeding cable guided in the grip portion of the carrying handle is disposed at the end position instead of the center in the longitudinal direction of the grip portion, when gripping the grip portion, The power cable does not get in the way.

  The guide portion may be a recess formed in a concave shape from a side surface on one side of the grip portion to be inserted into the power supply cable.

  The guide portion that guides the power feeding cable may be a projection that protrudes from the gripping portion so as to engage with the power feeding cable, for example. There is an advantage that the carrying handle is easy to grip.

  On the upper surface of the pump body, on the other side of the both sides sandwiching the grip portion, a hose coupling that protrudes upward and constitutes the discharge port is disposed, and the height of the carrying handle is The pump body is set substantially the same as the height of the hose coupling. When the pump body is turned upside down, the upper end of the hose coupling and the upper surface of the carrying handle are in contact with the ground, and are substantially upright. It is good also as supported by the attitude | position of.

  Thus, when maintenance is performed by inverting the pump body, the pump body is stably supported in an upright posture by the hose coupling and the carrying handle.

  As described above, since the power supply cable is not fixed, even if the power supply cable hits the ground when the pump body is inverted, the power supply cable will be deformed relatively freely, and the hose coupling The pump body is supported only by the carrying handle.

  In other words, when the middle part of the power supply cable is fixed, the power supply cable is bent in advance and has a predetermined rigidity or more, and when the pump body is inverted, that part hits the ground and the pump body is turned upside down. Can become unstable. On the other hand, by allowing the power supply cable to be deformed relatively freely without being fixed, the pump body is stably supported in an upright posture, and the maintainability is improved.

  The submersible pump includes a water level detection sensor that detects a water level in the water reservoir for operating / stopping the pump body, a sensor cable connected to the water level detection sensor, and an upper surface of the pump body. And a cable connector to which the sensor cable is connected, the cable connector being provided on one side of both sides of the grip portion of the handle for handling, wherein the cable connector includes two leg portions of the carrying handle. In the inside, it is disposed in the vicinity of the other leg part away from the cable boot, and the other leg part in the carrying handle has the water level detection sensor disposed at a predetermined position, A locking groove for locking the middle portion of the sensor cable may be formed.

  By locking the middle portion of the sensor cable with the locking groove, for example, the middle portion of the sensor cable is prevented from being caught and broken or the like.

  As described above, according to the present invention, the guide portion is provided in the grip portion of the carrying handle, and the first and second bending portions are utilized by utilizing elasticity against bending of the power supply cable without fixing the power supply cable. By arranging the power feeding cable while being formed, even if the pump main body is suspended by the power feeding cable and the pump main body is sent into the water reservoir or pulled out from the water reservoir The power supply cable can be prevented from being disconnected.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
FIG. 1 shows a cross-sectional view of a submersible pump 1 according to an embodiment of the present invention. The submersible pump 1 is a temporary pump used for wastewater treatment and the like, and includes a pump unit 2 having an impeller 21 and a motor unit 3 having a motor 4 that drives the impeller 21. 10 is provided. The pump body 10 has the pump part 2 and the motor part 3 arranged in the vertical direction by disposing the pump part 2 on the lower side of the oil casing 6 and the motor part 3 on the upper side.

  The motor unit 3 includes the motor 4 including a stator 41 and a rotor 42, a stator casing (motor casing) 31 that covers the stator 41 of the motor 4, and a motor cover 32 that is attached to the upper end of the stator casing 31. ing.

  The motor 4 is a single-phase motor, and a drive shaft 43 extending in the vertical direction is disposed at the approximate center of the rotor 42. An impeller 21 is attached to the lower end portion of the drive shaft 43, whereby the rotation of the motor 4 is transmitted to the impeller 21.

  The stator casing 31 has a bottomed cylindrical shape with an upper end opening. A through hole through which the drive shaft 43 passes is formed at a substantially central position of the bottom portion, and a substantially intermediate portion of the drive shaft 43 is formed. A bearing 33 that is rotatably supported is attached.

  The motor cover 32 has a substantially inverted U-shaped cross section, and is attached to the upper end of the stator casing 31 so as to close the upper end opening of the stator casing 31.

  Although not shown, various electrical components for driving the motor 4 are accommodated in the stator casing 31 and the motor cover 32. Here, as one of the electrical components, at least a capacitor used for starting the motor 4 is generally arranged at a position above the motor 4. On the other hand, in this submersible pump 1, although not shown, a capacitor is disposed in a side position of the motor 4 in the stator casing 31 so that the total height of the submersible pump 1 is reduced. ing. As the capacitor is disposed at the side position of the motor 4, the bracket 32 a for attaching the bearing 35 that supports the drive shaft 43 can be directly provided on the motor cover 32.

  The oil casing 6 has a substantially cylindrical shape, and a partition wall 61 that partitions the pump unit 2 and the motor unit 3 is formed at a central position in the cylinder axis direction. Thus, on the upper surface side of the partition wall 61, an annular upright wall 62 protruding upward is formed integrally with the partition wall 61. The partition wall 61 is formed with a through-hole penetrating vertically at a position corresponding to the center of the space surrounded by the standing wall 62, and the drive shaft 43 of the motor 4 passes through the through-hole. Are arranged.

  In the oil casing 6, the upper end of the standing wall 62 is fixed to the lower surface of the stator casing 31, thereby forming a sealed space surrounded by the partition wall 61, the standing wall 62, and the lower surface of the stator casing 31. To do. A mechanical seal 64 is disposed in the sealed space, whereas an oil seal 65 is attached to the lower surface side of the partition wall.

  A plurality of through-holes 66 (only one is shown in FIG. 1) are formed intermittently along the outer periphery of the oil casing 6 at a portion radially outward from the annular standing wall 62. The through holes 66 allow the lower surface side (the pump part 2 side) of the oil casing 6 to communicate with the outer casing 5.

  The outer casing 5 has a covered cylindrical shape with a substantially inverted U-shaped cross section, and a lower end of the outer casing 5 is attached to the upper end of the oil casing 6, thereby forming a motor accommodating portion that accommodates the motor 4 together with the oil casing 6. To do. Thus, an annular flow path 51 that circulates around the motor 4 is formed between the outer casing 5 and the stator casing 31.

  As described above, the pump unit 2 includes the impeller 21 attached to the lower end of the drive shaft 43 of the motor 4 and the pump casing 22.

  The pump casing 22 is formed in a substantially bottomed cylindrical shape having a substantially U-shaped cross section, and is attached to the lower side of the oil casing 6 so as to cover the impeller 21 from the lower side. .

  A suction port 22 a is formed at the bottom of the pump casing 22 at a position corresponding to the center position of the impeller 21.

  Reference numeral 23 denotes a rear liner disposed on the back side of the impeller 21 and sandwiched between the pump casing 22 and the oil casing 6.

  A strainer 7 is also disposed below the oil casing 6 so as to cover the pump casing 22. The strainer 7 is formed in a substantially bottomed cylindrical shape having a substantially U-shaped longitudinal section, and a plurality of suction holes are formed in the outer peripheral wall portion (not shown). Then, the upper end of the strainer 7 is attached to the lower end of the oil casing 6, and the bolt 71 is screwed upward so that the pump portion 2 is accommodated by the strainer 7 and the oil casing 6. Is formed.

  As shown in FIGS. 1 and 2, on the upper surface of the outer casing 5, a hose coupling 53 to which a drainage hose (not shown) is connected, a carrying handle 8, and a power supply cable (captyre cable) for supplying power to the motor 4 are provided. And cable boots 72 through which 73 are inserted.

  The upper surface of the outer casing 5 has a circular shape in plan view, and a rear portion in the front-rear direction (left side in FIG. 2) is an inclined portion that is inclined downward toward the rear.

  Although not shown, the hose coupling 53 is a cylindrical member with a lower end communicating with the annular flow path 51 and with both ends open upward at the upper end and a flange, The flange portion is fixed to the upper portion of the outer casing 5 by fixing the flange portion with a bolt. The hose coupling 53 is disposed at a substantially central position with respect to the left-right direction (vertical direction in FIG. 2). Further, the hose coupling 53 attached to the inclined portion is disposed so as to extend vertically upward, and its upper end is located at a predetermined height with respect to the upper surface (horizontal surface) of the pump body 10. Is set to

  The carrying handle 8 extends in the left-right direction at a central portion in the front-rear direction on the upper surface of the outer casing 5. Details of the configuration of the carrying handle 8 will be described later.

  The cable boot 72 is fixed to the front portion in the front-rear direction (on the right side in FIG. 2) on the upper surface of the outer casing 5 by a bolt, whereby the hose coupling 53 and the cable boot 72 are carried by the carrying handle. 8 are disposed on both sides of the front and rear sides. Unlike the hose coupling 53, the cable boot 72 is disposed at a position shifted to the left side from the center position in the left-right direction, whereby the cable boot 72 is placed on the left side ( It is located in the vicinity of the leg portion 82a on the lower side in FIG.

  As shown in FIGS. 3 to 6, the carrying handle 8 includes a gripping portion 81 that extends in the left-right direction at a position above the upper surface of the outer casing 5 and is gripped by human hands, and the gripping portion 81. Two leg portions 82 (82a, 82b) that extend downward from the left and right ends of the outer casing 5 and are fixed to the upper surface of the outer casing 5. The carrying handle 8 may be a resin molded product in which the grip portion 81 and the two leg portions 82 are integrally molded.

  The gripping portion 81 is a rod-shaped portion whose cross section is formed in a substantially rectangular shape, and has a length that can be gripped by a human hand in the left-right direction.

  Each of the leg portions 82 is in contact with the upper surface of the outer casing 5 and fixed to the outer casing 5, and a connecting portion 84 that connects the fixing portion 83 and the gripping portion 81 together. It is configured with.

  The fixing portion 83 is formed with a bolt hole 83a that penetrates in the vertical direction and into which a bolt for fixing the carrying handle 8 to the outer casing 5 is inserted. The connecting portion 84 is formed in a substantially U shape in plan view so as to surround the bolt hole 83a, and protrudes slightly upward at the front portion at the upper end thereof, and the upper end surface thereof is flattened. 84a is formed. The front portion at the upper end of the connecting portion 84 is made higher than the rear portion by the amount of the protrusion 84a (see FIG. 6). The height of the carrying handle 8 at the projection 84 a is set to be the same as the height of the hose coupling 53.

  In the carrying handle 8 described above, the connecting portion between the grip portion 81 and the left leg portion 82a has a shape inclined as shown in FIG. 6 by being recessed from the front side surface of the grip portion 81 to the lower surface. A recess 85 having the shape is formed. The recess 85 has a width that allows the feeding cable 73 to be inserted therein, and functions as a guide portion that guides the arrangement of the feeding cable 73.

  That is, the feeding cable 73 connected to the cable boot 72 forms a first curved portion that curves upward between the cable boot 72 and the grip portion 81 as shown in FIGS. A second bending portion that is bent downward by the grip portion 81 including 85 is disposed so as to reach the rear side of the carrying handle 8 so as to be formed continuously with the first bending portion. In other words, the position of the cable boot 72 and the position of the carrying handle 8 are separated from each other to the extent that the first bending portion can be formed in accordance with the allowable bending radius of the power supply cable 73 and for carrying. The height of the handle 8 is also set so that the first curved portion can be formed.

  In this submersible pump 1, for example, when draining the accumulated water in the building hole at the construction site, first, one end of a drainage hose (not shown) is connected to the hose coupling 53 to collect the submersible pump 1. Place in the architectural hole so that it is immersed in water.

  At this time, when the pump body 10 is suspended by the power supply cable 73, the power supply cable 73 forms the first and second curved portions as described above. Since the power feeding cable 73 comes into close contact with the gripping portion 81 at the second bending portion due to its elasticity, a frictional force is generated between the power feeding cable 73 and the gripping portion 81. Due to the frictional force, the impact load acting on the connecting portion between the feeding cable 73 and the cable boot 72 is reduced. In addition, the connection portion between the power supply cable 73 and the cable boot 72 does not receive the total weight of the pump body 10, but also receives the weight of the pump body 10 in the second curved portion. For this reason, the stress concentration in the connecting portion is eliminated. Thus, even if the pump body 10 is suspended by the power supply cable 73, disconnection of the power supply cable 73 and the like are prevented.

  If the pump body 10 is fed into the building hole by the power supply cable 73 and the submersible pump 1 is accumulated and immersed in water, the motor 4 is supplied with power through the power supply cable 73 and the motor of the submersible pump 1 is supplied. 4 is driven. As a result, the impeller 21 rotates and the centrifugal force pushes the water around the impeller 21 to the side, and the area corresponding to the lower center of the impeller 21 is decompressed. By this decompression, water is sucked into the pump casing 22 from the side of the strainer 7 through the suction hole and the suction port 22a. Further, the water is pushed out to the side of the impeller 21 by the centrifugal force and is guided to the annular flow path 51 in the outer casing 5 through the through-hole 66 of the oil casing 6. Thus, when a predetermined amount or more of water is accumulated in the annular channel 51, the water is discharged to the outside through the hose coupling 52 and the drainage hose, and the accumulated water in the building hole is drained.

  Then, when the submersible pump 1 is pulled out of the building hole after the drainage of the accumulated water in the building hole is completed, the pump body 10 is suspended by the power supply cable 73. As in the case where the submersible pump 1 is fed into the building hole, the impact load does not act on the connecting portion between the feeding cable 73 and the cable boot 72, and the stress concentration in the portion is alleviated. Occurrence of disconnection or the like is suppressed.

  The cable boot 72 is arranged to be shifted to the left in the left-right direction in the outer casing 5, and the recess 85 is positioned at the left end of the grip portion 81, which is a position close to the installation position of the cable boot 72. The power feeding cable 73 does not move to the center side of the gripping portion 81, and the power feeding cable 73 does not get in the way when the gripping portion 81 is gripped manually. In addition, by configuring the guide portion of the power feeding cable 73 with the recess 85, the gripping portion 81 can be easily gripped without being touched when the gripping portion 81 is gripped.

  During maintenance of the submersible pump 1, as shown in FIG. 8, the pump body 10 is inverted. At this time, the heights of the hose coupling 53 and the carrying handle 8 are the same. Since it is set, the pump body 10 can be stably inverted. In particular, the projection 84a formed on the front portion at the upper end of the connecting portion 84, which is the side away from the hose coupling 53, comes into contact with the ground (floor surface), so that it can be seen in the direction shown in FIG. The pump main body 10 is supported at two points (the upper end of the hose coupling 53 and the protrusion 84a of the carrying handle 8) that are separated from each other, and the pump main body 10 can be stably supported.

  At this time, since the feeding cable 73 is not fixed, it can be moved and deformed relatively freely. That is, when the middle part of the power supply cable 73 is fixed, the power supply cable 73 may be bent in advance and may have a predetermined rigidity or more. In this case, the pump body 10 is inverted. Sometimes, the portion of the power supply cable 73 hits the ground and the inverted posture of the pump body 10 may become unstable. On the other hand, when the power supply cable 73 is not fixed, even when the power supply cable 73 hits the ground when the pump body 10 is inverted, the power supply cable 73 is deformed relatively freely (the power supply in FIG. 8). The pump main body 10 is supported only by the hose coupling 53 and the carrying handle 8) (see the gap between the cable 73 and the gripping portion 81). As a result, the pump main body 10 can be stably held in the inverted posture, and the maintainability can be improved.

(Embodiment 2)
The submersible pump 1 according to the second embodiment includes a water level detection sensor 91, and is configured to automatically operate and stop based on a detection signal of the water level detection sensor 91. In addition, the same code | symbol is attached | subjected about the same structure as the submersible pump which concerns on Embodiment 1, and the description is abbreviate | omitted suitably.

  As shown in FIGS. 11 and 12, the submersible pump 1 further includes a water level detection sensor 91, a cable connector 92, and a sensor cable 93 that connects the water level detection sensor 91 and the cable connector 92 to each other. The cable connector 92 is disposed on the upper surface of the outer casing 5 together with the cable boot 72, the hose coupling 53, and the carrying handle 8.

  Similar to the cable boot 72, the cable connector 92 is fixed to the front portion in the front-rear direction (the right side in FIG. 2) on the upper surface of the outer casing 5 with bolts. The cable connector 92 is also disposed at a position shifted to the right side from the center position in the left-right direction, whereby the cable connector 92 and the cable boot 72 are disposed side by side in the left-right direction.

  The submersible pump 1 is also provided with a sensor holding band 94 for holding the water level detection sensor 91 at a predetermined position. The sensor holding band 94 includes a ring portion 95 and a mounting portion 96 in which a press-fitting hole 96a is formed.

  The ring portion 95 is made of a rubber material having a diameter smaller than the outer diameter of the outer casing 5 of the pump main body 10, and when inserted into the outer casing 5, the outer casing is caused by an elastic restoring force in a reduced diameter direction. The outer periphery of 5 is held and fixed to the outer casing 5 at a predetermined height position.

  The mounting portion 96 is integrally formed with the ring portion 95 so as to bulge outward from the ring portion 95 in the radial direction. The press-fitting hole 96 a is formed so as to penetrate vertically at the center position of the attachment portion 96, and the diameter thereof is set to be slightly smaller than the outer diameter of the cylindrical water level detection sensor 91. Thereby, when the water level detection sensor 91 is inserted into the press-fitting hole 96a, the attachment portion 96 can hold the water level detection sensor 91 by the elastic restoring force of rubber. Then, as shown in FIGS. 11 (b) and 12 (b), the attachment portion 96 holds an arbitrary position of a cylindrical water level detection sensor 91 having a predetermined length. It is possible to change the height position, in other words, the detected water level.

  As shown in FIGS. 9 and 10, the carrying handle 8 in the submersible pump 1 has a locking groove 86 formed in the fixing portion 83 of the right leg portion 82 b. The locking groove 86 is a groove in which the sensor cable 93 is inserted to lock the sensor cable 93. The locking groove 86 opens at the rear end in the rear end portion of the fixing portion 83 of the right leg portion 82b. It is formed extending in the left-right direction.

  Next, in this submersible pump 1, the case where the starting water level is changed is demonstrated. First, when the tip position of the water level detection sensor 91 is lowered and thereby the starting water level is set to a relatively low position, the upper end portion of the water level detection sensor 91 is placed on the sensor holding band 94 as shown in FIG. While being held by the mounting portion 96, the mounting portion 96 is positioned at a position closer to the cable connector 92 on the front side than the carrying handle 8 (FIG. 11A). In this case, since the water level detection sensor 91 is located at a relatively low position, the sensor cable 93 is disposed without loosening.

  On the other hand, when the starting water level is set at a relatively high position, as shown in FIG. 12, the lower end portion of the water level detection sensor 91 is held by the mounting portion 96 of the sensor holding band 94, and the mounting portion 96 is The rear end of the carrying handle 8 is positioned away from the cable connector 92 (FIG. 12A). In this case, the sensor cable 93 is disposed so as to cross from the carrying handle 8 so as to pass under the gripping portion 81 from the front side to the rear side. At this time, the midway portion of the sensor cable 93 is disposed without being loosened by locking the midway portion of the sensor cable 93 in the locking groove 86 of the carrying handle 8. By doing so, the pump body 10 is fed into a building hole or the like, pulled out from the building hole, or the like, and the sensor cable 93 is caught in the middle of the sensor hole during use in the building hole or the like. Is prevented.

  In the submersible pump 1 according to the second embodiment, when the pump main body 10 is suspended by the power feeding cable 73, the disconnection of the power feeding cable 73 can be prevented in the same manner as in the first embodiment. is there.

  In the first and second embodiments, the guide portion that guides the power feeding cable 73 is not limited to the recess 85, but a projection that protrudes from the side surface of the gripping portion, and is configured to be engaged with the power feeding cable 73. May be.

  As described above, according to the present invention, the power supply cable is disconnected even when the pump body is suspended by the power supply cable and the pump main body is sent into the water reservoir or pulled out of the water reservoir. Therefore, it is useful as a submersible pump.

It is sectional drawing of the submersible pump which concerns on embodiment. It is a top view of a submersible pump. It is a perspective view of the handle for carrying. It is a top view of the handle for carrying. It is a front view of the handle for carrying. It is VI-VI sectional drawing of FIG. It is an enlarged side view of the partial cross section which shows the suspended state of a pump main body. It is an expanded side view of the partial cross section which shows the state which made the pump main body inverted. It is a rear view of the carrying handle according to the second embodiment. FIG. 6 is a right side view of the carrying handle according to the second embodiment. It is the top view (a) and side view (b) of a submersible pump in the case of making a water level detection position relatively low. It is the top view (a) and side view (b) of a submersible pump when a water level detection position is made relatively high.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Submersible pump 10 Pump main body 53 Hose coupling 72 Cable boot 73 Feeding cable 8 Carrying handle 81 Grip part 82 Leg part 85 Dimple (guide part)
86 Locking groove 91 Water level detection sensor 92 Cable connector 93 Sensor cable

Claims (5)

It is a submersible pump that is temporarily installed in a water storage part in which water is stored and discharges the water from the water storage part to the outside.
A pump body with a suction port formed at its lower end and a discharge port formed at its upper end,
A gripping part that extends in a predetermined direction on the top surface of the pump body and is gripped by a hand, and two legs that extend downward from both ends of the gripping part and are fixed to the top surface of the pump body. And a carrying handle having,
On the upper surface of the pump body, a cable boot disposed on one side of both sides sandwiching the grip portion of the carrying handle;
A power supply cable connected to the cable boot and for supplying power to the pump body,
At least a lower surface of the grip portion of the carrying handle is provided with a guide portion that guides the power supply cable by engaging the power supply cable in an unfixed state.
The power supply cable includes a first bending portion that is curved from the cable boot to the guide portion of the gripping portion on one side across the gripping portion, the first bending portion that is continuous with the first bending portion, and the gripping portion And a second bending portion that is bent in a direction opposite to the first bending portion is formed, and is disposed so as to reach the other side across the grip portion,
The pump main body is fed into the water reservoir while being suspended by the power supply cable in which the first and second curved portions are formed, and is a submersible pump drawn out from the water reservoir. .
The submersible pump according to claim 1,
The cable boot is disposed in the vicinity of one of the two legs of the carrying handle,
The guide part is a submersible pump provided at a joint part between a leg part closer to the cable boot and the grip part. The submersible pump according to claim 1 or 2,
The guide unit is a submersible pump that is a recess formed in a concave shape from one side surface of the gripping unit to a lower surface thereof and into which the power feeding cable is inserted. The submersible pump according to claim 1,
On the upper surface of the pump body, on the other side of the both sides sandwiching the grip portion, a hose coupling that protrudes upward and constitutes the discharge port is disposed,
The height of the carrying handle is set to be substantially the same as the height of the hose coupling,
The pump body is a submersible pump that is supported in a substantially upright posture with the upper end of the hose coupling and the upper surface of the carrying handle abutting against the ground when the pump body is inverted. The submersible pump according to claim 2,
A water level detection sensor for detecting the water level in the reservoir for the operation and stop of the pump body;
A sensor cable connected to the water level detection sensor;
On the upper surface of the pump body, the cable connector is further disposed on one side of both sides sandwiching the grip portion of the carrying handle, and further includes a cable connector to which the sensor cable is connected,
The cable connector is disposed in the vicinity of the other leg part away from the cable boot among the two leg parts in the carrying handle,
The submerged pump in which the other leg part in the carrying handle is formed with a locking groove for locking the middle part of the sensor cable in a state where the water level detection sensor is disposed at a predetermined position.

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