Pump with float

Abstract

To provide a pump with a float capable of smoothly performing water absorption when floating on water.SOLUTION: A pump with a float comprises: a pump unit 2 having a water absorption part 20, a pump 21, and a water discharge part 22; and a float 3 arranged in the pump part 2, and connected to the pump unit 2 in an inseparable manner in normal time. The connection of the float 3 to the pump unit 2 is such that, when floating on water, the pump unit 2 can be inclined away from the float 3 so that the water absorption part 20 is positioned below the water discharge part 22.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a pump with a float. [Background technology]

[0002] Conventionally, a pump with a float, as described in Patent Document 1, exists as a portable drainage pump used for draining water during disasters such as floods. This pump with a float comprises a submersible pump, a float, and a support arm that connects the submersible pump and the float (see Figure 1 of Patent Document 1). The submersible pump comprises an inner casing that internally supports an electric motor and other components, and an outer casing that supports the inner casing.

[0003] The support arm is made of a twisted plate made of metal or synthetic resin. The support arm is also attached using the same bolts that connect the submersible pump casing. This bolt fastening structure allows the float to be detachably attached to the submersible pump.

[0004] Although not mentioned in the literature, there are also conventional float-equipped pumps in which the pump unit is suspended by a float. This float-equipped pump includes a float and a pump unit that is suspended from the float and can float on water. The float and the pump unit are connected by, for example, a rope. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4892259 Summary of the Invention [Problem to be solved by the invention]

[0006] In the configuration described in Patent Document 1, the pump section (referred to as a "submersible pump" in Patent Document 1) and the float are rigidly connected, so the relative positions of the pump section and the float are constant, and if the center of gravity of the entire float-equipped pump is not centered between the front and rear, the entire float-equipped pump will tilt when floated on water. In this case, if the pump section tilts so that the suction side is on top, air will accumulate inside the pump section's suction pipe (particularly in the elbow), and the air present in the suction pipe may cause a so-called "air lock," making it impossible to suck in water.

[0007] Furthermore, in a configuration where the float and pump unit are connected by a rope or the like, the pump unit is suspended from the float, so it can tilt freely, but when it is floated on water, it will tilt so that its center of gravity is at the bottom. In this way, simply suspending the pump unit from the float makes it impossible to control the tilt of the pump unit, which can lead to an airlock.

[0008] Therefore, an object of the present invention is to provide a pump with a float that can smoothly absorb water when floated on water. [Means for solving the problem]

[0009] The float-equipped pump of the present invention comprises a pump section having a water intake section, a pump, and a discharge section, and a float that is disposed in the pump section and is normally inseparably connected to the pump section, and the connection of the float to the pump section is such that the pump section can be tilted away from the float so that the water intake section is positioned lower than the discharge section when the pump section is floating on water.

[0010] With this configuration, when the float-equipped pump is floated on water, the pump section automatically tilts relative to the float. This ensures that the water intake section is positioned downward, preventing air from accumulating in the water intake section and allowing for smooth water intake when the pump is floated on water without causing an airlock.

[0011] In the float-equipped pump, the float may be connected to the pump section by a long body that extends in the vertical direction and allows the pump section to move up and down relative to the float.

[0012] According to this configuration, the pump section can be automatically tilted relative to the float by the elongated body that connects the float to the pump section.

[0013] In addition, in the float-equipped pump, the float is connected to the pump section by a plurality of long bodies extending in the vertical direction, and at least those of the plurality of long bodies located close to the water intake section allow the pump section to move up and down relative to the float, and at each connection point of the float to the pump section, the range allowing the pump section to move up and down relative to the float may be set larger at the connection point on the water intake section side than at the other connection points.

[0014] According to this configuration, the range of vertical movement of the pump section can be easily set by adjusting the connection state of each elongated body to the float and the pump section.

[0015] The float-equipped pump may also be provided with a handle formed of a rib that extends along the outer periphery of at least one of the upper and lower surfaces of the float and protrudes from the float.

[0016] With this configuration, the float-equipped pump can be easily transported on land and easily transported manually between land and water.

[0017] In the float-equipped pump, the float may be hollow or may hold a substance with a lower specific gravity than water inside, and some parts of the float may be smaller in internal dimensions than other parts.

[0018] With this configuration, it is possible to design the buoyancy of the float in accordance with the center of gravity of the pump section. [Effects of the Invention]

[0019] As described above, according to the present invention, a pump with a float that can smoothly absorb water when floated on water can be provided. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a side view of a pump with a float according to this embodiment. [Figure 2] FIG. 2 is a bottom view of the float of the float-equipped pump. [Figure 3] FIG. 3 is a side view for explaining the posture of the float-equipped pump, where FIG. 3(a) shows the posture when placed on land, and FIG. 3(b) shows the posture when floating on water. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] A pump with a float according to one embodiment of the present invention will be described below with reference to Figures 1 to 4. As shown in Figure 1, the pump with a float 1 comprises a pump section 2 having a water intake section 20, a pump 21, and a discharge section 22, and a float 3 disposed in and connected to the pump section 2. The pump with a float 1 also comprises at least one elongated body 4. The pump with a float 1 further comprises a frame 5 that supports the pump section 2, and wheels 6 connected to the frame 5.

[0022] In this embodiment, the float pump 1 is a portable drainage pump used for draining water during disasters such as floods. The float pump 1 may also be a fire pump that is floated on a fire water tank or pond.

[0023] The float 3 is connected to the pump section 2 in an inseparable manner under normal circumstances. Normal circumstances refer to when the float-equipped pump 1 is being transported or used. In addition, the float 3 can be separated from the pump section 2 by removing the elongated body 4 during non-normal circumstances, such as when the float-equipped pump 1 is being maintained or stored. For example, when the float-equipped pump 1 is being stored, the disassembled pump section 2 and float 3 can be stored on a shelf or the like.

[0024] In this embodiment, the float 3 is disposed above the pump section 2. The float 3 may also be disposed to the side of the pump section 2.

[0025] The pump section 2 drains water sucked in from the water intake section 20 by the pump 21 through the drain section 22. The pump section 2 also has a connection section 23 to which the elongated body 4 is connected.

[0026] The water intake section 20 is an elbow pipe that extends at a 90-degree bend relative to the horizontal. The cross section of the water intake section 20 is circular. The water intake section 20 has a water intake port 200 and a connection port 201 that is connected to the pump 21. The water intake port 200 faces downward. The connection port 201 faces horizontally.

[0027] The water intake section 20 may be a straight pipe extending horizontally. When the water intake section 20 is a straight pipe, a separate elbow pipe may be attached to the water intake port 200 of the water intake section 20.

[0028] Pump 21 includes an electric motor as a power source, and an impeller that is rotated by the electric motor and moves water from the intake side to the discharge side. Pump 21 also includes an intake side part 211 connected to intake section 20, a discharge side part 212 connected to discharge section 22, and a connection part 213 that connects intake side part 211 and discharge side part 212.

[0029] The water intake side portion 211 is cylindrical in shape with a diameter that increases toward the water discharge side. The water discharge side portion 212 is cylindrical in shape with a diameter that decreases toward the water discharge side. The connection portion 213 is cylindrical in shape with a uniform diameter at every point in the axial direction.

[0030] A drain hose can be connected to the drain part 22. The drain part 22 is provided at the end of the pump 21 on the drain side.

[0031] The connecting portion 23 is a plate member that extends upward from the pump 21 and has a through-hole for attaching the elongated body 4. This plate member is, for example, an L-shaped plate member that extends upward a short distance and then bends 90 degrees horizontally. Furthermore, a through-hole for attaching the elongated body 4 is provided in the horizontally extending portion of this plate member.

[0032] In this embodiment, the connecting portion 23 is provided on the intake side and on the discharge side, respectively. The connecting portion 23 is separate from the pump 21 and is fixed to the pump 21, for example, by being fixed to a flange portion of the pump 21.

[0033] 3(a) shows the posture of the float-equipped pump 1 when placed on land. At this time, the central axis A1 of the pump 21 is parallel to the central axis A2 of the float 3 in the up-down direction. The central axis A1 of the pump 21 is also parallel to the surface S on which the float-equipped pump 1 is placed. In this way, the weight of the float-equipped pump 1 is well balanced on land, making the float-equipped pump 1 easy to transport.

[0034] FIG. 3(b) shows the posture of the float-equipped pump 1 when it is floating on water. The imaginary line A3 is parallel to the center axis A2 of the float 3 in the vertical direction. The connection of the float 3 to the pump section 2 allows the pump section 2 to tilt away from the float 3 so that the water intake section 20 is positioned below the discharge section 22 when the float-equipped pump 1 is floating on water, because gravity is greater than the buoyancy acting on the pump section 2. Therefore, when the float-equipped pump 1 is floating on water, the center axis A1 of the pump 21 automatically tilts with respect to the imaginary line A3, which is parallel to the center axis A2 of the float 3 in the vertical direction. Thus, when the float-equipped pump 1 is floating on water, the pump section 2 tilts relative to the float 3, ensuring that the water intake section 20 is positioned downward in the float-equipped pump 1. This prevents air from accumulating in the water intake section 20, preventing airlock and allowing smooth water intake.

[0035] The inclination of the pump section 2 relative to the float 3 when the float-equipped pump 1 is floated on water can be set appropriately as long as it is less than 90 degrees. From the viewpoint of preventing air from accumulating in the water intake section 20, the inclination of the pump section 2 relative to the float 3 is preferably 1 degree or more, and in this embodiment, the angle between the central axis A1 of the pump 21 and the imaginary line A3 is approximately 1 degree. Furthermore, considering the possibility that the attitude of the pump section 2 may change significantly and land on the bottom when the float-equipped pump 1 is floated on water, the inclination of the pump section 2 relative to the float 3 is preferably 2 degrees or less.

[0036] The float 3 is a float for floating the float-equipped pump 1 on water (see FIG. 1). In this embodiment, the float 3 is configured to hold a substance with a lower specific gravity than water inside, for example, filled with foamed resin. Specifically, the outer layer of the float 3 is made of FRP (fiber reinforced plastic), and the inside of the outer layer of the float 3 is filled with expanded polystyrene. The float 3 may be a hollow member, that is, it may be configured to hold air inside.

[0037] The float 3 is also provided with a through-hole 30 that penetrates in the vertical direction. When the float-equipped pump 1 is placed on land, the lower surface 340 of the float 3 faces the upper surface of the horizontally extending portion of the connecting portion 23 (curved plate member) of the pump section 2. The through-hole 30 is tubular and separated from the portion of the float 3 that generates buoyancy.

[0038] The cross-sectional shape of the through-hole portion 30 may be circular or elliptical. In this case, it is preferable that the major axis of the ellipse is aligned along the front-to-rear direction of the float-equipped pump 1, since this reduces contact between the elongated body 4 and the through-hole portion 30 due to tilting of the pump portion 2.

[0039] Furthermore, the float 3 has a portion with a smaller internal dimension (volume) related to buoyancy than the other portions. Specifically, the float 3 has a portion 31 located on the water intake side with respect to the internal dimension smaller than the other portions 32. By adjusting the internal dimension of the float 3 in this manner, it is possible to design the buoyancy in accordance with the center of gravity of the pump section 2. The portion of the float 3 with a smaller internal dimension is usually a portion in the front-to-rear direction (water intake direction), but it may also be a portion in the width direction.

[0040] When viewed from the side, the float 3 has a tapered shape in which the part 31 located on the water intake side is narrower than the other parts 32, and the vertical dimension of the float 3 is shorter in the part 31 located on the water intake side than in the other parts 32.

[0041] 2, when viewed from below, the float 3 has a tapered shape in which the portion 31 located on the water intake side is narrower than the other portions 32, and the width dimension of the float 3 is shorter in the portion 31 located on the water intake side than in the other portions 32. Similarly, when viewed from above, the float 3 has a tapered shape in which the portion on the water intake side is narrower than the other portions.

[0042] In this embodiment, the float 3 is made up of two connected parts, including an upper float part 33 and a lower float part 34 (see FIG. 1). The float 3 is made up of two parts of the same shape and size, and the upper float part 33 and the lower float part 34 are joined together to form the integrated float 3. The float 3 may also be made up of two parts of different shapes or sizes. The float 3 may also be made up of one part, or three or more parts.

[0043] In this float 3, through-holes that penetrate in the up-down direction are provided in the float upper part 33 and the float lower part 34. With the through-holes of the float upper part 33 and the float lower part 34 connected, the float upper part 33 and the float lower part 34 are joined together to form the through-hole part 30 that penetrates the float 3 in the up-down direction.

[0044] The float 3 has a pair of through-holes 30 arranged side by side in the front-rear direction. The number of through-holes 30 may be one, or three or more.

[0045] The float 3 is provided with a handle 35 for use during transportation (see Figures 1 and 2). With this configuration, by holding the handle 35 of the float 3, the float-equipped pump 1 can be easily transported on land and manually when moving between land and water.

[0046] In this embodiment, the handle 35 is made up of a downwardly convex rib 36 that is integral with the lower edge of the float 3, specifically, a rib 36 that is integral with the lower edge of the float's lower portion 34 (see FIG. 1). The handle 35 may be made up of a rib that extends along the outer peripheral edge of at least one of the upper and lower surfaces of the float 3 and protrudes from the float 3. In other words, the handle 35 may be provided on a part other than the lower edge of the float 3, or on the side or upper edge of the float 3 in addition to the lower edge of the float 3. The handle 35 may also be separate from the float 3; for example, a separate handle may be connected to the float 3 by screws or the like.

[0047] The rib 36 is provided along the outer peripheral edge of the lower surface 340 of the float lower portion 34. Specifically, the rib 36 includes a first rib 361 and a second rib 362 provided with a gap 360 from the first rib 361 in the direction along the outer peripheral edge.

[0048] In this embodiment, a rib similar to the rib 36 is also provided on the upper edge of the float upper part 33. This rib is also provided around the outer periphery of the upper surface 330 of the float upper part 33, and is composed of two ribs spaced apart by a gap 360. Therefore, even if water gets inside the ribs of the float upper part 33 when the float 3 is floating on water, the water will escape to the outside through the gap 360 between the two ribs, making it difficult for water to accumulate on the float upper part 33.

[0049] As mentioned above, ribs are provided on the upper surface, lower surface, and outer peripheral edge of the float 3 along almost the entire circumference, excluding gaps 360 between the ribs and a gap for passing a power cord (not shown), so the cross section of the float 3 is approximately H-shaped along almost the entire length (see Figure 4). Therefore, the float 3 has strength against bending.

[0050] The ribs on the top surface of the float 3 act as a fence to prevent a power cord from falling when it is rolled up and placed on the float 3 (see Figure 1). The ribs on the bottom surface of the float 3 can be used as a handle at any position on the periphery of the float 3. There is no limit to the number of people who can lift the float-equipped pump 1, so even elderly people or women with little physical strength can increase the number of people who can carry it.

[0051] The long body 4 is a member that connects the float 3 to the pump section 2. The long body 4 extends in the vertical direction. Specifically, the long body 4 is inserted into the through-hole 30 of the float 3 and extends in the vertical direction, penetrating the float 3. Note that the long body 4 may also extend in the vertical direction without penetrating the float 3.

[0052] The float 3 is connected to the pump section 2 by a plurality of elongated bodies 4 positioned from the float 3 to the pump section 2. Of the plurality of elongated bodies 4, at least those located closest to the water intake section 20 allow the pump section 2 to move up and down relative to the float 3. Furthermore, at each connection point of the float 3 to the pump section 2, the range of allowed up and down movement of the pump section 2 relative to the float 3 is set larger at the connection point on the water intake side than at the other connection points. In this way, by adjusting the connection status of each elongated body 40, 41 to the float 3 and the pump section 2, the range of up and down movement of the pump section 2 can be easily set, and therefore the inclination of the pump section 2 relative to the float 3 when the float-equipped pump 1 is floated on water can be easily set.

[0053] This float-equipped pump 1 is provided with two elongated bodies 4. Of the two elongated bodies 4, the water-suction-side elongated body 40 provided on the water-suction side allows the pump section 2 to move up and down relative to the float 3. On the other hand, of the two elongated bodies 4, the discharge-side elongated body 41 provided on the discharge side does not allow the pump section 2 to move up and down relative to the float 3.

[0054] In this embodiment, the elongated body 4 is a rod-shaped body, but it may be a member other than a rod-shaped body as long as it extends in the vertical direction, and may be, for example, a flexible elongated body such as a wire or chain. When these elongated bodies 4 are in a taut state, the distance between the pump section 2 and the float 3 can be regulated. Note that in this float-equipped pump 1, all of the elongated bodies 4 are rod-shaped bodies, but it is also possible that some of the multiple elongated bodies 4 are rod-shaped bodies and the rest are members other than rod-shaped bodies.

[0055] For example, when an L-shaped elongated body 4 is used, the connecting portion 23 may be omitted. The L-shaped elongated body 4 may be fixed to a flange portion of the pump 21.

[0056] Furthermore, a universal joint can be sandwiched between the elongated body 4 and the connecting portion 23. This configuration can reduce the tilt of the elongated body 4 due to the tilt of the pump portion 2, making it less likely that the elongated body 4 and the through-hole portion 30 will come into excessive contact with each other.

[0057] The elongated body 4 has a rod-shaped elongated body main body 43 that is inserted into the through-hole 30 of the float 3, and a hanging part 42 provided at the upper end of the elongated body main body 43. The elongated body 4 also has a connecting member 44 for connecting the elongated body 4 to the connecting part 23 of the pump part 2.

[0058] In this embodiment, the elongated body main body 43 is cylindrical, but may be another shape such as a rectangular tube. A female screw is provided on the inner peripheral surface of at least the upper end of the elongated body main body 43. A female screw is also provided on the inner peripheral surface of at least the lower end of the elongated body main body 43. The connecting member 44 is, for example, a bolt.

[0059] The elongated body main body 43 is a rod-shaped body for connecting the float 3 to the pump section 2. A bolt serving as a connecting member 44 is inserted into the through-hole of the connection section 23 and screwed into the lower end of the elongated body main body 43, thereby fixing the elongated body main body 43 to the pump section 2.

[0060] In this embodiment, the vertical dimension of the elongated body main body 43 of the suction-side elongated body 40 is longer than the vertical dimension of the elongated body main body 43 of the discharge-side elongated body 41. The vertical dimension of the elongated body main body 43 of the discharge-side elongated body 41 is also equal to the vertical dimension of the through-hole 30 of the float 3, and more specifically, is slightly longer than the vertical dimension of the through-hole 30 of the float 3. As a result, the suction-side elongated body 40 allows the pump section 2 to move up and down relative to the float 3, while the discharge-side elongated body 41 does not allow the pump section 2 to move up and down relative to the float 3. In other words, the float-equipped pump 1 is configured so that there is vertical "play" between the suction-side elongated body 40 and the float 3.

[0061] The suspending part 42 is detachably attached to the elongated body main body 43. The suspending part 42 is located above the upper surface 330 of the float 3. This makes it easy to suspend the float-equipped pump 1 by the suspending part 42.

[0062] The hanging part 42 is, for example, an eyebolt with a male thread on the outer peripheral surface of its lower end, and is attached to the elongated body main body 43 by being screwed into the upper end of the elongated body main body 43. The user can also remove the eyebolt from the top of the elongated body main body 43 by rotating the eyebolt attached to the elongated body main body 43 in the direction opposite to the screwing direction. In this way, the eyebolt can be attached to and removed from the elongated body main body 43 without using any additional tools.

[0063] This eyebolt extends radially outward from the through-hole portion 30 of the float 3 beyond the elongated body main body portion 43. Therefore, when the float-equipped pump 1 is floated on water, the float 3 is prevented from floating up relative to the pump portion 2 and coming out of the elongated body 4.

[0064] The suspending portion 42 does not have to have the function of preventing the float 3 from being pulled out from the elongated body 4. The elongated body 4 may also be composed of only the elongated body main body portion 43, without the suspending portion 42. In this case, instead of the suspending portion 42, a member may be provided on a part of the elongated body main body portion 43 that abuts against the float 3 to prevent the float 3 from being pulled out from the elongated body 4.

[0065] As an alternative to the eye bolt, a bolted hook (with a stopper attached is even better) can be used as the hanging part 42. By using a bolted hook, the float-equipped pump 1 can be hung even if only a sling belt with eyes on both ends is available.

[0066] As a modified example of the rod-shaped member connecting the eye bolt and the pump, for example, a cut bolt can be used. In this case, an eye nut can be used as the hanging part 42. Also, the rod-shaped member connecting the eye bolt and the pump can be used like a turnbuckle by changing the female thread on the inner peripheral surface of the end to a reverse thread on only one end.

[0067] The frame 5 is a base for supporting the pump section 2 to which the float 3 is attached. In this embodiment, the frame 5 is fixed to the pump 21 of the pump section 2.

[0068] Furthermore, the frame 5 is disposed only below the pump section 2. In this float-equipped pump 1, the float 3 is connected to the pump section 2 by connecting the elongated body 4 (the elongated body 4 provided inside the float 3) that passes through the float 3 to the connecting section 23 of the pump section 2. Therefore, compared to a configuration in which the float 3 is connected to the pump section 2 using a member provided on the outside of the float 3, the float 3 is more reliably connected to the pump section 2. As a result, in this float-equipped pump 1, there is no need to surround the pump section 2 or the float 3 with a frame that surrounds them from the width direction (side), which allows for lighter weight and smaller size.

[0069] The wheels 6 are used when moving the float-equipped pump 1 on land. In this embodiment, the wheels 6 are fixed to the frame 5. The wheels 6 are located below the pump 21 and support the pump 21 via the frame 5. The wheels 6 cause the pump 21 to float above the mounting surface S of the float-equipped pump 1, so even if the float-equipped pump 1 is placed in water with a low water level where the wheels 6 can reach the bottom, it is difficult for debris or foreign matter to get into the pump 21.

[0070] The wheels 6 are arranged in pairs at two locations on the intake side and discharge side of the frame 5, sandwiching the pump 21 in the width direction of the pump 21. The wheels 6 may be arranged in only one pair sandwiching the pump 21 in the width direction of the pump 21, or in multiple sets of three or more pairs. The float-equipped pump 1 may also be equipped with a row of wheels 6 aligned from the intake side to the discharge side. The float-equipped pump 1 may not also be equipped with wheels 6; for example, the wheels 6 may be detachably attached to the float-equipped pump 1. Sled-shaped leg members may also be attached to the float-equipped pump 1 instead of the wheels 6.

[0071] The float-equipped pump of the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit and scope of the present invention.

[0072] In the above embodiment, the float-equipped pump 1 is provided with two elongated bodies 4, but three or more elongated bodies may be provided. When the float-equipped pump 1 is provided with three or more elongated bodies 4, the vertical dimension of the elongated body main body portion 43 of the elongated bodies 4 may be longer as they are positioned closer to the water intake side, or only the elongated body positioned closest to the water intake side may be longer than the others.

[0073] Furthermore, when three or more elongated bodies 4 are provided in the float-equipped pump 1, the plurality of elongated bodies 4 may be arranged in a row from the water intake side to the water discharge side. Furthermore, a plurality of rows of elongated bodies 4 arranged in a row from the water intake side to the water discharge side may be arranged with gaps in between in the width direction of the pump section 2. In either configuration, the number and arrangement of the through-hole portions 30 of the float 3 correspond to the number and arrangement of the elongated bodies 4.

[0074] In the above embodiment, the float 3 is connected to the pump section 2 by a plurality of elongated bodies 4 positioned from the float 3 to the pump section 2, but it may also be connected by a single elongated body 4. In this case, the cross-sectional shape of the elongated body 4 is set to a shape that prevents the float 3 from rotating relative to the pump section 2. For example, the cross-sectional shape of the elongated body 4 may be a polygonal shape such as a rectangle, an oval shape, an H-shape, or a circle with one radially protruding or recessed portion.

[0075] The float 3 may be connected to the pump section 2 by a hinge. In this case, it is preferable to provide a part (metal fitting) that fixes and releases the float 3 to the pump section 2 in order to adjust the tilt angle of the pump section 2 relative to the float 3 when the float-equipped pump 1 is floating on water. In addition to hinges, various mechanisms that can tilt the float 3 relative to the pump section 2 can be used.

[0076] In the above embodiment, the float-equipped pump 1 is provided with one float 3, but multiple floats may be provided. For example, a pair (two) of floats 3 may be provided so as to sandwich the pump section 2 from both sides in the width direction. [Explanation of symbols]

[0077] 1...float-equipped pump, 2...pump section, 3...float, 4...long body, 5...frame, 6...wheel, 20...water intake section, 21...pump, 22...discharge section, 23...connection section, 30...through hole section, 31...section located on the water intake side, 32...other section, 33...upper part of float, 34...lower part of float, 35...handle, 36...rib, 40...water intake side long body, 41...discharge side long body, 42...hanging section, 43...long body main body, 44...connection member, 200...water intake port, 201...connection port, 211...water intake side section, 212...discharge side section, 213...connection section, 330...upper surface, 340...lower surface, 360...gap, 361...first rib, 362...second rib, A1, A2...central axis, A3...imaginary line, S...mounting surface

Claims

1. a pump unit including a water intake unit, a pump, and a drainage unit; a float disposed in the pump section and normally connected inseparably to the pump section, A pump with a float, wherein the connection of the float to the pump section is such that the pump section can tilt away from the float so that the water intake section is positioned lower than the water discharge section when the pump is floating on water.

2. 2. The float-equipped pump according to claim 1, wherein the float is connected to the pump section by a long body that extends in the vertical direction and allows the pump section to move up and down relative to the float.

3. The float is connected to the pump section by a plurality of elongated members extending in the vertical direction, Among the plurality of elongated bodies, at least one provided near the water intake section allows the pump section to move up and down relative to the float, 2. The float-equipped pump according to claim 1, wherein, at each connection point of the float to the pump section, the range of allowable vertical movement of the pump section relative to the float is set larger at the connection point on the water intake section side than at other connection points.

4. 2. The float-equipped pump according to claim 1, further comprising a handle formed of a rib extending along the outer periphery of at least one of the upper and lower surfaces of the float and protruding from the float.

5. 2. The float-equipped pump according to claim 1, wherein the float is hollow or contains a substance having a specific gravity lower than that of water, and the internal dimensions of the float are such that one portion is smaller than the other portion.

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