JPH08551Y2 - Portable liquid suction and discharge device - Google Patents

Description

[Technical Field of the Invention] [Technical Field of the Invention] The present invention relates to a liquid suction / exhaust device using a centrifugal pump, and in particular, it absorbs and collects accumulated water that easily sucks air and wastewater that contains a lot of mud and the like. The present invention relates to a device for discharging sewage collected from an arbitrary liquid supply source to a predetermined disposal site for treatment.

[Conventional technology and its problems] Conventionally, for drainage treatment of spilled water and accumulated water at construction sites, etc., a pump installed in the air is used to collect water, a trolley is used to collect water, and then a trolley is used to collect water. I used it to carry it to the designated disposal site.

However, since submersible pumps installed in the air do not like to suck in air, the liquid suction port must always be inserted securely into the liquid of the liquid supply source. The drawback is that the pump will not work.

Especially when using a positive displacement rotary pump that eliminates the frictional heat between the rotor and the casing by the sucked liquid and performs a lubricating action, the frictional heat is removed and the lubricating action is taken during a so-called dry operation in which air is sucked. Since it becomes impossible to carry out the work, the rotor and the casing will be worn.

Further, if a method of directly immersing the pump body in the liquid supply source is adopted in order to avoid the dry operation, it cannot be used at any work site because it is restricted by the size of the liquid supply source and the shape of the bottom surface.

[Objectives of the Invention] The object of the present invention is to eliminate the above-mentioned conventional drawbacks and to prevent the size and bottom shape of the liquid supply source from being restricted.
An object of the present invention is to provide a device capable of reliably sucking liquid from a liquid suction port, capable of withstanding even during a dry operation in which air is sucked, and having an effective suction / discharge action until the liquid supply source becomes a drought state.

[Configuration of the Invention] In the portable liquid suction / discharge device according to the present invention, a motor chamber is erected above the pump swirl chamber, and a cooling water passage communicating with the pump swirl chamber and the pump discharge port is provided on the outer periphery of the motor chamber. The pump suction port is led out from the center of the lower wall of the pump casing, and its tip is formed at the connection part of the suction hose, and a mud hole is opened in the peripheral part of the lower wall of the pump casing, and the opening position is outside the outer peripheral edge of the impeller. Is located in the pump casing, and a storage chamber communicating with the pump swirl chamber via the mud hole is formed below the pump swirl chamber. It is configured to be detachably coupled to the lower edge of the peripheral wall portion.

[Embodiment] Referring to the drawings of the embodiment, 1 is an impeller 2.
, 3 is an upper casing that constitutes the upper wall portion and the peripheral wall portion of the pump vortex chamber 1, and 3h is a pumping hole that connects the inside of the pump vortex chamber 1 to a cooling water passage 26 described later. Is drilled around the upper wall.
Reference numeral 4 denotes a pump casing which constitutes a lower wall portion of the pump swirl chamber 1 and a peripheral wall portion of a storage chamber 5 described later, and an upper edge of the peripheral wall portion is detachably fitted to a lower edge of the peripheral wall portion of the upper casing 3. Reference numeral 6 denotes a drain cover formed in a tray shape so as to form a lower wall portion of the storage chamber 5 described later, and an upper edge of a peripheral side portion thereof is detachably fitted to a lower edge of the peripheral wall portion of the pump casing 4. Reference numeral 7 denotes a pump suction port led out from the suction hole 8 of the pump casing 4, the tip of which is formed at the connecting portion 10 of the suction hose 9. The leading end of the suction hose 9 is
It is formed in the liquid suction port 12 suitable for the situation of the liquid supply source 11. As in the patent No. 1143367 previously developed by the applicant, for example, a mouthpiece suitable for sucking liquid when the liquid depth is extremely shallow,
Alternatively, various types of suction ports with a strainer for sewage are prepared, and the structure is such that these can be arbitrarily attached and detached and replaced. 13 is a check valve attached to the pump suction port 7,
Reference numeral 14 is a water intake hole opened above the outlet of the pump suction port 7, and it is desirable to open it at a position higher than the opening position of the pump discharge port 15 described later. 16 is a plug for closing the priming hole 14. Reference numeral 17 is a self-priming hole formed in the lower wall portion of the pump casing 4, and the position of the hole is preferably located near the lower edge of the blade plate of the impeller 2.
Reference numeral 18 denotes a mud dropping hole formed in the peripheral portion of the lower wall of the pump casing 4, and its opening position is provided outside the outer peripheral edge of the impeller 2, and the guide vanes 19 are provided on the outer circumference of the impeller 2. When provided, the guide vanes 19 are drilled outside the outer edge. Reference numeral 20 denotes an agitating blade attached to the lower side of the impeller 2 for preventing air lock, which is guided into the suction hole 8 at the center of the lower wall of the pump casing. Reference numeral 21 is a bolt hole provided at an outer peripheral portion of the upper casing 3, 22 is a bolt hole provided at an outer peripheral portion of the drain cover 6, and 23 is a tightening bolt inserted into both bolt holes 20 and 21. is there. Then, the upper edge of the peripheral side portion of the pump casing 4 is fitted to the lower edge of the peripheral wall portion of the upper casing 3, and the upper edge of the peripheral side portion of the drain cover 6 is fitted to the lower edge of the peripheral wall portion of the pump casing 4, thereby tightening bolts. By tightening at 23, the pump swirl chamber 1 and the storage chamber 5 are formed at the same time, and the storage chamber 5 communicates with the pump swirl chamber 1 through the self-priming hole 17 and the mud-falling hole 18. Also, tightening bolts
By removing 23, the drain cover 6 and the pump casing 4 can be removed all at once. A seat leg 24 is provided around the lower surface of the drain cover 6, and is used for mounting wheels for movement, a bottom plate for mounting, and the like. Reference numeral 25 is a motor chamber that is erected above the pump swirl chamber 1, and 26 is a cooling water channel that is provided around the outer periphery of the motor chamber 25. The lower portion of the cooling water channel is inside the pump swirl chamber 1 through the pumping hole 3h. It is electrically connected, and the upper part is electrically connected to the pump discharge port 15. The tip of the discharge port 15 is formed in the connecting portion 28 of the discharging hose 27, and the leading end of the discharging hose extends to a predetermined disposal site.

[Operation] At the time of use, liquid is supplied from the priming hole 14 so that the pump swirl chamber 1 is filled with water, and the suction hose 9 is arbitrarily moved so that its tip liquid suction port 12 is the desired liquid supply source 11 , And the motor is driven with the priming hole 14 being closed by the plug 16.

The gas-liquid sucked into the pump swirl chamber 1 is sent out from the pump discharge port 15 while cooling the motor chamber 25 while passing through the cooling water passage 26, and is carried to a predetermined disposal site by the discharge hose 27. The stirring blade 20 attached below the impeller 2 functions to prevent air lock.

On the other hand, the mud contained in the sucked liquid flows down from the mud dropping hole 18 into the storage chamber 5. The mud accumulated in the storage chamber 5 can be discharged by removing the drain cover 6. When repairing or replacing the impeller 2, the pump casing 4 may be removed together with the drain cover 6.

[Effects] (1) According to the device of the present invention, the suction hose 9 connected to the pump suction port 7 is freely moved so that the tip liquid suction port 12 is inserted into any desired liquid supply source 11. Yes, and since the liquid suction port 12 adapted to the situation of the liquid supply source 11 can be used, it is possible to reliably absorb liquid regardless of the width and depth of the liquid supply source 11, the bottom surface shape, etc. It can withstand even the dry operation in which the liquid is sucked, and the effective suction and discharge action is performed until the liquid supply source 11 is in a dry state, and it has a feature of excellent maneuverability in combination with being portable.

(2) In the device of the present invention having the storage chamber 5 communicating with the pump swirl chamber 1, mud clogging or the like does not occur in the cooling water passage 26, and drainage is smoothly performed. Moreover, since the mud flows down into the storage chamber 5, the impeller 2 and the pump casing 4 are less likely to be damaged by the mud, and the storage chamber 5
The mud accumulated inside can be discharged by removing the drain cover 6, which is convenient.

(3) The device using the centrifugal pump of the present invention is simpler in structure than the one using the conventional positive displacement rotary pump, and therefore has excellent maintainability. Therefore, no sliding friction is generated, and therefore the impeller 2 and the pump casing 4 are not worn.

[Brief description of drawings]

1 is a vertical side view of a main part of the device of the present invention, FIG. 2 is a vertical side view of a pump casing in the device of the present invention, FIG. 3 is a bottom view of the same, and FIG. 4 is a vertical side view of a drain cover in the device of the present invention. FIGS. 5 and 5 are bottom views of the same, and FIG. 6 is an explanatory view showing an example of use of the device of the present invention. [A] is a mode of use when the liquid source has a shallow liquid depth, and [B] is The usage mode when the liquid depth of the liquid supply source is deep is shown. 1 ... Pump vortex chamber, 2 ... Impeller, 3 ... Upper casing, 3h ... Pumping hole, 4 ... Pump casing, 5
…… Storing chamber, 6 …… Drain cover, 7 …… Pump suction port, 8 …… Suction hole, 9 …… Suction hose, 10 …… Connection part,
11 …… Supply source, 12 …… Suction inlet, 13 …… Check valve, 14 …… Water inlet, 15 …… Pump outlet, 16 …… Plug, 17 …… Self-suction hole, 18 …… Mud drop hole, 19 …… Guide vane, 20 …… Stirring blade for air lock prevention, 21,22 …… Bolt hole, 23 …… Tightening bolt, 24 …… Seat leg, 25 …… Motor chamber, 26 …… Cooling water channel, 27 ... Ejection hose, 28 ... Connection part.

Claims (1)

[Scope of utility model registration request] 1. A motor chamber (25) is erected above the pump swirl chamber (1), and a cooling water passage (26) communicating with the pump swirl chamber (1) and the pump discharge port (15) is provided on the outer periphery of the motor chamber (25). , The pump suction port (7) is led out from the center of the lower wall of the pump casing (4), and its tip is formed in the connection part (10) of the suction hose (9), and is formed in the peripheral part of the lower wall of the pump casing (4). The mud hole (18) is opened and the opening position is located outside the outer peripheral edge of the impeller (2), and the reservoir communicates with the pump swirl chamber (1) through the mud hole (18). A peripheral side upper edge of the drain cover (6) formed in a tray shape is detachably attached to a lower peripheral edge of the peripheral wall portion of the pump casing (4) so that the chamber (5) is formed below the pump swirl chamber (1). A portable liquid suction and discharge device characterized by being combined.