JPH0338475Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for pumping or pumping water containing floating matter in a waterway without separating the floating matter.

[Conventional technology]

When pumping water containing suspended matter from a waterway, if you try to pump water with floating matter mixed in, the pump needs to be submerged to a certain depth, so only the water will be sucked in and the floating matter will not be sucked in. Instead, the floating matter remains near the pump suction port, and eventually the floating matter must be scooped up or removed separately.

Therefore, conventionally, in order to pump up water containing floating matter from a waterway, the floating matter was removed using a screen, etc., and then transported out, or the floating matter was scooped up into a discharge tank using an apron conveyor, etc., and the water was collected separately. It was common practice to pump water, but the use of screw pumps was also considered as a means of pumping water with suspended matter mixed in.

[Problem that the invention attempts to solve]

However, these conventional means are structurally complex and require a large installation area, and require a lot of consideration in order to evenly scrape up floating objects that are easily scattered.

The present invention eliminates the above-mentioned conventional drawbacks, has a simple structure, minimizes the installation area, prevents floating objects from dissipating without exposing them, and reliably pumps or pumps water with floating objects mixed in. The purpose of the present invention is to provide a pressurized water supply device for waterways that can be used in waterways.

[Means for solving problems]

In the present invention, the bottom of the waterway is communicated with the water conduit through a communication port, a pump blade for pressure feeding is exposed in the communication port, and the pump blade is surrounded on the outside in the upper direction of the rotating shaft to which the pump blade is attached to connect the waterway with the waterway through the communication port. A hollow shaft with rotating spiral blades attached to the outer periphery for pushing down floating matter so as to reach the vicinity of the mouth is rotatably provided, and the hollow shaft and the rotating shaft are connected to a prime mover so that the required output rotation speed can be obtained respectively. The present invention provides a pressurized water supply device for a waterway, characterized in that the device is connected to a waterway, and is configured to forcefully transport floating matter in the waterway together with water.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a waterway, and a communication port 2 is provided at the bottom of the waterway 1 to communicate with a discharge well 3.
The upper part is connected to a water conduit 4 that leads to a receiving facility (not shown). A pump blade 7 for pressure feeding is supported within the communication port 2 by a lower bearing 9.
A spiral vane 6 for pushing down floating matter is placed around the outside of the upper part of the rotating shaft 8 to which the pump blade 7 is attached, and extends to the vicinity of the communication port 2. A hollow shaft 5 attached to the outer periphery is rotatably provided. Furthermore, the hollow shaft 5 and the rotary shaft 8 are each connected to a prime mover 11 via a speed reducer 10 such as a gear speed reducer that can provide the required output rotation speed.

In the figure, 12 indicates floating matter.

Next, to explain its function, the prime mover 11
The power is transmitted by the reducer 10 to the hollow shaft 5 and the rotary shaft 8 at respective required output rotational speeds with two types of reduction ratios. Therefore, the spiral blade 6 on the outer periphery of the hollow shaft 5 for pushing down floating objects acts as a screw conveyor to successively push down the floating objects 12 below the water surface, and the pump blades 7 rotating below Move it to just above. The floating objects 12 pushed down in this way are pumped together with the water in the waterway 1 by the rotating pump blades 7, reach the waterway 4, and then are guided to a receiving facility.

Depending on the width of the waterway 1, if the diameter of the spiral blade 6 for pushing down floating objects on the outer periphery of the hollow shaft 5 is set to the full width of the waterway 1, the floating objects 12 can be almost evenly distributed. This results in extremely high unloading efficiency.

As described above, the present invention has a concentric double-shaft structure consisting of a rotating hollow shaft equipped with a spiral blade for pushing down floating objects and a pressure pump rotation shaft, and operates at different rotational speeds. The structure is such that the floating matter inside is pushed down below the water surface by a spiral blade and sent to the vicinity of the pump suction port, and is then pumped along with the water, so that the floating matter does not stay there and is exposed and dissipated. It is possible to reliably send out suspended matter mixed with the water without any problems, and by arranging a single drive system (prime mover, reducer, dual shaft), equipment can be simplified and processing can be done in a small space. This has extremely useful effects in practice.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a partially cutaway side view and FIG. 2 being a partially cutaway plan view. 1... Channel, 2... Communication port, 3... Discharge well, 4
...Hairrace, 5...Hollow shaft, 6...Spiral blade, 7
... Pump vane, 8 ... Rotating shaft, 9 ... Lower bearing, 10 ... Speed reducer, 11 ... Prime mover, 12 ...
floating objects.

Claims (1)

[Scope of utility model registration request] The bottom of the waterway is communicated with the water conduit through a communication port, a pump blade for pressure feeding is exposed in the communication port, and the pump blade is surrounded on the outside in the upper direction of the rotating shaft to which the pump blade is attached to reach the vicinity of the communication port. A hollow shaft having rotating spiral blades attached to the outer periphery for pushing down floating objects is rotatably provided, and the hollow shaft and the rotating shaft are each connected to a prime mover so as to obtain the required output rotation speed, A pressurized water supply device for a waterway, characterized in that floating matter in the waterway is pumped together with water.