JPH0252045B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a snow removal method using water, which is particularly suitable for implementation in areas with heavy snowfall.

[Conventional technology]

Common snow removal methods include hand tools such as shovels, mobile forces such as shovels, and the formation of snow drifting grooves with slopes suitable for snow removal, in which a large amount of snow is removed. In addition, snow melting methods using trucks, transporting snow from specific urban areas to snow storage areas, hot water, snow melting agents, etc. are being implemented. Additionally, 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 to be solved by the invention]

Means such as shovels and shovels remove very little snow and are only able to secure a small living area, while means of transportation such as trucks cannot remove snow continuously, so the amount of snow removed is greater than the former method. However, it is difficult to say that it is an effective means of snow removal in terms of economic efficiency. Furthermore, the means 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 sewage pipes. Therefore, it is necessary to ensure the distance of snow by repeatedly lifting snow from a high place using a pump and lowering it down, and the equipment costs are enormous, making it impossible to use this snow-drifting method everywhere. It has the disadvantage of being short-lived. In addition, the unfinished method of mixing snow and water and pumping it through a pump can cause problems such as snow particles adhering to the pump blades, dirt and stones contained in the snow, plastic bags, strings, etc. getting caught. There are many problems such as not only lowering the pumping efficiency due to mutual bonding and solidification of snow masses in the flow pipe, but also clogging due to the above substances and making it impossible to operate. The current situation is that it is no more than a proposal. In addition, as a means for sucking snow and accumulated snow into the flow pipe, a ventilate section is formed by narrowly squeezing the front of the jet water flow passage, as described in JP-A-52-70981, for example. It is also possible to use the negative pressure caused by the ejector effect that occurs in the ventilate part, but in this case, since the ventilary part is narrowly squeezed, snow or snow accumulation may stick to it and freeze, or snow or snow accumulation may There is a problem in that it cannot be used as a means of suctioning into the flow pipe because the solids contained in the pipe may clog the squeezed passage. Therefore, although the present invention uses water in common with the proposed mixed flow system of snow and water described above, it does not directly use a primary pump and therefore eliminates the problem of snow adhesion to the blades. The purpose of the present invention is to provide an extremely economical and efficient method for snow removal without the entanglement of snow and garbage, and without causing the snow masses to bond and solidify within the flow pipe. It is something.

[Means to solve the problem]

In order to achieve the above object, the snow removal method using water according to the present invention connects a flow pipe passage continuously to the snow suction pipe passage, and applies high pressure toward the discharge port of the snow suction pipe passage. A water jet is injected to form a negative pressure in the flow pipe passage, and the negative pressure creates a negative pressure in the snow suction passage, and a power-driven pulverizer installed at the entrance of the snow suction pipe Snow or accumulated snow that has been crushed to a size smaller than the diameter of the suction passage is sucked into the snow 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. It is characterized by allowing

[Effect]

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.
Snow or accumulated snow that is crushed to a size smaller than the diameter of the snow suction passage by a power-driven crusher installed at the entrance of the snow suction pipe passage is sucked together with air and water and reaches the jet injection section. The snow sucked into the jet injection portion is further destroyed and disturbed by the high-pressure water jet injected there, and is forced into the flow pipe passageway in the discharge direction. In this case, the snow in the flow pipe is prevented from bonding and freezing together due to the compressibility of the air that enters with the water jet and the effects of bubble destruction, etc., and the movement of the fluid is prevented. Fluidity is ensured by the frictional heat generated between the fluids, albeit a small amount, which allows extremely smooth snow removal by force. In particular, in the method of the present invention, high-pressure water supplied from a high-pressure water source using a plunger pump or the like is used as a jet to rush into the flow pipe passage, so the snow that is sucked in does not pass through the pump. It comes to be suctioned and pressure-fed from the pipe passage to the flow pipe passage. In addition, the snow crushed by the power-driven crusher contains a large amount of air, and when the air contained in the snow mixes with the water jet in the flow pipe, this air is mixed into the flow pipe passageway and the water jet. acts as a lubricant between jets,
This prevents the flow of the water jet from attenuating. Therefore, a high negative pressure is created in the flow pipe passage due to the strong water jet, and the snow can be powerfully transported.

【Example】

A snow removal route is formed by a snow suction pipe passage that removes snow to a snow suction place and a conveyance pipe passage that is piped to a snow removal river or other snow removal place, and this snow removal route is used as a snow suction pipe passage. The structure is bent at the joint between the flow pipe and the flow pipe passage, so that high-pressure water from a high-pressure water supply source, such as a plunger pump, can be flowed into the bent part in a liquid-tight manner and in the direction of its injection without allowing it to flow into the snow removal path. A power-driven crusher is installed at the inlet of the snow suction pipe, and the snow is conveyed or crushed by a conveyor or the like. The snowpack or accumulated snow supplied by moving the suction port is previously pulverized by this power-driven pulverizer to a size smaller than the diameter of the snow suction pipe passage, and then is supplied to the snow suction pipe passage. Here, the snow crushed by the power-driven crusher contains a large amount of air, and when the air contained in this snow is mixed into the water jet in the flow pipe, this air is mixed into the flow pipe passage. It acts as a lubricant between the water jets and prevents the flow force of the water jet from being attenuated, so that a high negative pressure can be generated in the flow pipe passage due to the strong flow force of the water jet. If the appropriate amount of air is not sucked from the snow suction pipe passage, install an air introduction part via a valve that adjusts the inflow amount in the snow suction pipe passage or near the water jet injection part to reduce the negative pressure caused by the water jet. This can be used to force air into the snow removal path, or to supply pressurized air if necessary. In addition, the high-pressure water jet can reuse the water containing the snow melting agent discharged from the flow pipe,
As for the injection position of the high-pressure water jet, it is easiest to use a single jet directed toward the center of the flow pipe passage at the bend, but it is also possible to arrange multiple jets concentrically. Alternatively, the jets may have a plurality of concentric jets when viewed from the front, and may be stepped in the axial direction. Furthermore, in addition to the single jet directed toward the center of the flow pipe passage, water jet supply portions may be provided at several locations on the peripheral wall along the flow pipe passage.

【Effect of the invention】

As explained above, the snow removal method using water according to the present invention injects a high-pressure water jet into the transfer pipe passage to generate negative pressure in the snow suction pipe passage. With this negative pressure, the snow supplied to the entrance of the snow suction pipe passage is crushed in advance by a power-driven crusher, and then the snow is supplied to the snow suction pipe passage and high pressure is injected into the flow pipe passage. The snow in the flow pipe is further broken down and agitated by the water jet as it is forced into the discharge direction, so the snow in the flow pipe is affected by the compressibility of the air that enters with the water jet and the effects of bubble destruction. Mutual bonding of the snow masses is prevented, and fluidity is ensured due to the movement of the fluid and the slight frictional heat generated between the fluids, making it possible to perform extremely smooth pressure-feeding and snow removal. In particular, in the method of the present invention, high-pressure water supplied from a high-pressure water source using a plunger pump or the like is used as a jet to rush into the flow pipe passage, so the snow that is sucked in does not pass through the pump. Even if dirt, stones, plastic bags, ropes, strings, and other debris are contained in the snow that is suctioned and pressure-fed from the pipe passageway to the flow pipe passageway, as long as the size is less than or equal to the pipe diameter of the snow suction passageway. , it is possible to perform pressure feeding without any problems, and it also eliminates the problem of snow adhering to the moving parts of the pump body and solidifying it, or the above-mentioned dirt getting entangled, which reduces operational efficiency or makes it impossible to operate, and continuously pumps a large amount of water. There is also the advantage that snow removal processing can be achieved. 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 (1)

[Scope of Claims] 1. A flow pipe passage is connected continuously to the snow suction pipe passage, and a high-pressure water jet is injected toward the discharge port of the snow suction pipe passage to create a negative pressure in the flow pipe passage. The negative pressure is used to create a negative pressure in the snow suction passage, and the power-driven crusher installed at the entrance of the snow suction pipe passage crushes snow or accumulated snow to a size smaller than the diameter of the snow suction passage. A snow removal method using water, characterized in that the snow is sucked into a suction pipe passage, and the sucked snow is continuously pulverized and agitated by the water jet, and then forced to be sent toward the discharge port of a distribution pipe. 2. The snow removal method using water according to claim 1, wherein the high-pressure water jet is injected into the flow pipe passage at a plurality of locations along the flow pipe passage.