JPS61229005A - Snow discharge method utilizing water - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a snow removal method using water, which is particularly suitable for implementation in areas with heavy snowfall.

[Conventional technology]

In addition to using hand tools such as shovels and mobile forces such as shovels, snow removal methods are generally carried out by forming snow drifting grooves with slopes suitable for snow transport, and dumping large amounts of snow into these grooves. This is a method in which snow is thrown in and transported while water is flowing.
Furthermore, snow melting methods are being implemented, such as truck transportation from specific urban areas to snow storage areas, and the use of hot water, snow melting agents, and the like.

Hydraulic transport, which involves mixing snow and water and transporting the mixture using pumps, has been proposed and researched, but it is still at an unfinished stage.

[Problem that the invention seeks to solve]

With means such as shovels and shovels, the amount of snow removed is extremely small and can only secure a small living area, while means of transportation such as trucks cannot remove snow continuously, so the amount of snow removed is larger than the former method. However, it is difficult to say that it is an effective means of snow removal in terms of economic efficiency. In addition, the method of using snow-drifting ditches requires a large amount of water and requires a large slope for the snow-drifting, making it impossible to use existing equipment such as sewer pipes. The transport distance must be ensured by repeatedly lowering objects that have been raised to a high place, and the equipment costs are enormous.
The drawback is that this method of snow drifting cannot be used everywhere. Furthermore, the unfinished method of mixing snow and water and distributing it with a pump has problems such as snow particles adhering to the pump blades, dirt and stones contained in the snow, plastic bags, strings, etc. getting caught, and discharging the mixture. There are many problems such as not only lowering the pump transport efficiency due to mutual bonding and solidification of snow masses in the pipeline, but also clogging due to the above substances and making the operation impossible. The current situation is that it does not appear.

Although the present invention uses water in common with the proposed mixed flow of snow and water, it does not directly use a secondary pump, and thus eliminates snow adhesion to the blades and debris. It is an object of the present invention to provide a method for extremely economical and efficient snow removal without tangles and without causing snow masses to bond with each other in a flow pipe.

[Measures to solve problems]

A high-pressure water jet is injected toward the discharge port of the snow suction pipe passage into the snow suction pipe passage, which is continuously connected to the snow suction pipe passage. Snow or accumulated snow that has been crushed to a size smaller than the diameter of the suction pipe passage is sucked into the suction pipe passage, and the sucked snow is continuously crushed and stirred by the water jet while being forced into the direction of the outlet of the distribution pipe. The main point is a method of snow removal using water, which is characterized by the ability to

〔Example〕

The snow removal route formed by the snow suction pipe passage and the snow removal pipe passage piped to the snow removal river or other snow removal location is bent at the joint of the snow suction pipe passage and the distribution pipe passage,
At the bent part, an injection nozzle is installed that allows high-pressure water from a high-pressure water supply source, such as a plunger pump, to flow into the snow removal path in a liquid-tight manner and with the injection direction directed toward the central axis of the flow pipe passage. While injecting into the flow pipe passage through the snow suction pipe passage, the snowpack or accumulated snow that has been crushed to a size smaller than the diameter of the snow suction pipe passage is conveyed by a conveyor or the like, or the suction port is moved. supply. In this case, if appropriate air is not suctioned from the snow suction pipe passage, an air introduction part is installed in the snow suction pipe passage or near the water jet injection part via a valve that adjusts the amount of inflow, and the negative impact caused by the water jet is Pressure may be used to force air into the snow removal path, or pressurized air may be provided if necessary.

As for the injection position of the high-pressure water jet, it is simplest to make a single jet directed toward the center of the flow pipe passage at the bend, but it is also possible to use a plurality of concentric jets. (Also, it may be configured to have a plurality of concentric jets when viewed from the front and to be stepped in the axial direction.

Furthermore, in addition to the central jet, water jet supply sections may be provided at several locations on the peripheral wall along the flow pipe passage.

Furthermore, the means for crushing snow in advance is not particularly limited, and for example, floating snow can be crushed by a power-driven crusher, and the snow and water can be supplied to the entrance of the snow suction pipe passage. It is optional whether to directly supply the crushed product using a crusher or the like, and if there is no need to crush it, for example,
In some cases, the entrance portion of the snow suction pipe passage may be moved to directly suction snow.

[Operation and effect of the invention]

In the method of the present invention, when a high-pressure water jet is injected into the flow pipe passage, a vacuum pressure is created in the jet injection part and the snow suction pipe passage leading to the part, so that the water is supplied to the entrance of the snow suction pipe passage. The snow is sucked together with air and water and reaches the jet injection section, where it is destroyed and disturbed by the high-pressure water jet and is forced into the flow pipe passage in the discharge direction. In this case, the snow in the flow pipe is prevented from bonding together due to the compressibility of the air that enters with the water jet and the destruction of bubbles, and the movement of the fluid and the movement of the fluid, albeit a slight one, are prevented. Since fluidity is ensured by the frictional heat generated between the fluids, extremely smooth snow removal can be achieved.

In particular, in the method of the present invention, high-pressure water supplied from a high-pressure water supply source using a plunger pump or the like is plunged into the flow pipe passage as a jet, so the snow is sucked in without passing through the pump. It comes to be suctioned and pressure-fed from the pipe passage to the flow pipe passage. Therefore, even if the snow to be sucked contains debris such as rocks, plastic bags, ropes, strings, etc., as long as the size is less than the diameter of the snow suction passage, it can be pumped without any problem. This eliminates the problem of snow adhering to and hardening on the movable parts of the pump body or getting tangled with the dirt, which reduces operating efficiency or makes operation impossible, and continuously clears a large amount of snow. Furthermore, when flexible pipes are used for the flow pipe passageway, extremely inexpensive snow removal equipment can be constructed, making it possible to install snow removal equipment in each region, thereby reducing snow pollution in regions that experience heavy snowfall every year. It has the effect of greatly contributing to eliminating the problem.

Claims (9)

[Claims] (1) A high-pressure water jet is injected into the flow pipe passage connected to the snow suction pipe passage in the direction of the discharge port of the snow suction pipe passage, while making the inside of the snow suction passage a negative pressure. At the same time, snow or accumulated snow that has been crushed in advance to a size smaller than the diameter of the snow suction passage is sucked into the snow suction pipe passage, and the sucked snow is continuously crushed and agitated by the water jet, and the discharge port of the distribution passage. A method of snow removal using water, which is characterized by forcing the snow in a direction. (2) The snow removal method using water according to claim 1, wherein the high-pressure water jet is injected into the flow pipe passageway at a plurality of locations along the flow pipe passageway. (3) The water according to claim 1 is used, in which the passage area of each part from the starting end of the snow suction pipe passage to the terminal end of the distribution pipe passage maintains the minimum opening area of the snow suction pipe passage. Snow removal method. (4) The snow removal method using water according to claim 1, wherein the material passing through the flow pipe passage is snow and water containing air sucked in the snow suction passage pipe or near the water jet injection part. . (5) The snow removal method using water according to claim 3, wherein the air to be sucked is controlled suction from the vicinity of the water jet injection part. (6) The snow removal method using water according to claim 1, wherein the direction of the high-pressure water jet corresponds to the pipe center discharge direction of the flow pipe passage. (7) The snow removal method using water according to claim 1, wherein the high-pressure water jets are ejected in a plurality of concentric circles. (8) The snow removal method using water according to claim 1, wherein the snow is crushed in advance by using a power-driven crusher to float the snow at the entrance of the snow suction passage pipe. . (9) The snow removal method using water according to claim 1, wherein the high-pressure water jet contains a snow melting agent.