RU189774U1 - Snow melter - Google Patents

Abstract

The invention relates to snow utilization plants by melting snow mass (ice). The invention can find application in urban utilities and enterprises located on large areas for the maintenance of roads, streets and territories in the winter. The technical result is an increase in the productivity of the working process due to the intensification of heat exchange through one or several active working bodies providing a large area of impact from the inside of the melted mass and simplifying the system of their rotational drive. The essence of the device is that, unlike the installation, the proposed design of the drive rotation of the active working bodies, which are hollow shafts installed along the entire length of the active the working body is carried out by the reactive force of the coolant, which is sprayed inside the snow massif using spray nozzles installed at the end of the hollow shafts.2.

Description

The utility model refers to the means of melting snow (ice), cleared from city streets, roads, territories in the winter period of time.

A device for melting snow (US patent No. 5235762, CL E IPC 01 H 5/10), which contains a capacity for receiving snow mass, elements for heating water due to the combustion of liquid or gaseous fuel, a pump for drawing water from the tank and feeding it into distribution pipes, through which, by means of nozzles, watering of the snow mass is carried out to accelerate the melting process.

A device is known (patent of the Russian Federation No. 2233950, IPC E03F 5/02, 2004) for forced snow melting, which consists of at least one snow-alloy chamber for receiving and melting snow, containing a bottom with a slope and a mechanized receiving bunker with rotary hammer crushers, a pump for water supply and irrigation of snow and devices for removing water, including a discharge pipe, as well as a sand trap in which partitions are located with the possibility of water circulation and which can be performed in combination with a snow-melting chamber or separately, in the latter case, they are communicated by means of a pipeline mounted at the calculated level of water overflow.

The effectiveness of the above design solutions is low, due to the irrational arrangement of the nozzles through which the spray of the coolant. This is explained by the fact that after a certain period of time since the beginning of the working process (after melting part of the snow mass), the energy supplied under the pressure of the coolant is extinguished by the resulting volumes of melt water. The snow massif does not collapse, and, therefore, the heat exchange area does not increase.

To increase the efficiency of the snow melting process, it is necessary to equip the installations with an additional working body that destroys the layers of snow mass and increases the contact area of these layers with the coolant.

According to US patent No. 3409006 Cl. A., IPC Е01Н 5/10, 11/05/1968, a device is proposed in which the snow falling into the receiving bunker is loosened by the working bodies in the form of shafts, along the whole length of which the blades are mounted. In the lower part of the bunker, it is proposed to install another working body in the form of a shaft with bristles designed to clean the bottom of mechanical impurities that enter the installation along with the snow. The rotation of the working bodies must be carried out from the electric motors due to the mechanical transmission (gearboxes, chain drives), which significantly complicates and increases the cost of the design of the snow melting installation both in manufacturing and in operation.

The same disadvantage has the closest to the proposed design to the technical essence of the installation for melting snow (Patent of the Russian Federation №2335597, IPC Е01Н 5/10, 10.10.2008). The installation includes a snow-melting chamber, equipped with means for mixing snow with hot water, nozzles for supplying hot water located in its upper part, and a pipeline for draining water for heating, a heat exchanger for heating water, pumping equipment, characterized in that it is additionally equipped with a receiver a bunker, a device for grinding snow, located under the receiving bin, a device for collecting solid household waste, equipped with a grating, installed between the snow melting chamber and heat transfer This, the snow melting chamber is made in the form of a pipe with screws, with nozzles for supplying hot water to the snow melting chamber placed along its entire length, and in the lower part there are slotted holes for draining water into the pan, attached to the snow melting chamber and provided with a pipeline for feeding water in the device for collecting solid waste.

The need for mechanical drives for the rotation of the working bodies (cutters and auger) greatly complicates this design.

The technical result of the proposed installation for melting snow is to increase the productivity of the working process due to the intensification of heat exchange through active working bodies, providing a large area of impact from the inside of the melted snow mass through the spray nozzles of the coolant and driven by the kinetic energy of the coolant jets (reactive force) flowing from the spray nozzles.

This technical result is achieved in that the installation for melting snow, consisting of a bunker for receiving and melting snow, a heat exchanger, a pump, a piping system, an active working body, characterized in that the active working body, which is a hollow shaft with nozzles mounted on it along the entire length of the hollow shaft with an offset, rotates due to the reactive force of the coolant that is sprayed into the snow massif using spray nozzles mounted at the ends of the nozzles along 90 °, wherein the active working body is arranged vertically and is mounted in the bottom of the hopper receiving and melting snow, and the hollow shafts are connected to the fixed tube by rotating coolant supply connections. A snow melting plant consists of a bunker for receiving and melting snow with one or more vertically arranged active working bodies in it, which are hollow shafts, at the ends of which are installed branch pipes with spray nozzles mounted at 90 ° to feed the coolant inside the melted snow mass and the possibility of rotation to ensure mixing of the snow mass under the action of the reactive force created by the pressure of the pump, which supplies the coolant to the hollow shafts and yes it through the pipes to the injectors spray. The possibility of rotation of the active working bodies is provided by their connection in the bottom of the bunker through rotational connections with fixed pipes, which carry out the supply of coolant from the heat exchanger. The heat exchanger is a container for heating the coolant (for example, heat-electric heaters, fuel combustion products, other known methods) with a pump for forcibly drawing the coolant and feeding it under pressure into the hollow shafts of the active working parts and then flowing through the spray nozzles onto the snow from inside its array. Drainage holes are mounted in the walls and bottom of the receiving hopper to drain and circulate the heat transfer layers of different temperatures.

The presence of new elements - active working bodies, which are hollow shafts, connected to fixed pipes for coolant supply through rotary connections, with branch pipes installed on them with spray nozzles, which, under the action of the reactive force of coolant, drive the rotation of hollow shafts with cutting and mixing of snow from inside the array .

The essence of the utility model is illustrated by the scheme, which shows the installation for melting snow (Fig. 1). FIG. 2 explains the junction of the active working body, as well as the path of the coolant to its contact with the snow massif.

The installation for melting snow is a bunker for receiving and melting snow (1) with vertically located active working bodies (2) installed in it, the number of which may vary depending on the design and technological parameters. Active working bodies (2) are hollow shafts (3) (for example, pipes), on which are installed nozzles (4) with nozzles of heat carrier (5) mounted on the ends at an angle of 90 °. Active working bodies (2) are installed in the bottom of the receiving hopper vertically. Hollow shafts (3) are connected to fixed pipes (7) of coolant supply by means of rotary joints (6). Rotary connections (6), provide rotation of the hollow shafts (3) with a tight connection to fixed pipes (7), which carry out the flow of coolant from the heat exchanger (8). Nozzles (4) are mounted on hollow shafts (3) offset relative to each other in order to expand the treatment area of the snow massif with coolant. The heat exchanger (8) is a tank in which the heating medium (for example, water) is heated by heating elements (9). The bunker for receiving and melting snow (1) is connected to the heat exchanger overflow (10) to allow the circulation movement of the coolant. The circulation mode is achieved by a pump (11) located in the pipeline system at the exit of the heat exchanger (8). The pump (11) provides a forced flow of coolant from the heat exchanger (8) to the active working bodies (2) through fixed pipes (7) of the pipeline system for supplying and discharging coolant. In the bunker for receiving and melting snow (1), an overflow pipe (12) is installed to divert cold layers of excess melt water and heat carrier mixture to the sewer network during operation. Drain pipes (13) with valves (14) for emptying the bunker for receiving and melting snow (1) and heat exchanger (8) are installed in the bottom of the bunker for receiving and melting snow (1) and heat exchanger (8)

Installation for melting snow works as follows.

Preparatory stage. The snow mass is loaded into the heat exchanger (8). Heating of the coolant is provided by the inclusion of heating elements (9). The bunker for receiving and melting snow (1) is loaded with snow, part of which begins to melt in the contact area of the walls of the receiving bin for receiving and melting snow (1) and heat exchanger (8). After the required amount of coolant in the heat exchanger (8) is set up with its heating to the operating temperature (for example, depending on the ambient temperature), the preparatory stage is completed.

Turning on the pump (11) leads to the subsequent continuous process of forced snow melting in the snow melting unit due to circulation and spraying of the coolant in the snow mass, gradually added to the bunker to receive and melt the snow (1) and drain excess melt water to the sewer system. Initially, the active working bodies (2) are clamped by an array of snow. As the snow melts in the location of the active working members (2), the hollow shafts (3) begin to move (turn) due to rotational connections (6) under the action of the total torque generated by the reactive forces of coolant ejection on the shoulder of the location of each of the spray nozzles of the heat carrier ( 5), due to which the drive of rotation of the active working bodies is provided. The rotation of the hollow shafts (3) leads to the fact that due to the kinetic and thermal energy of the coolant escaping from the spray nozzles of the coolant (5), the snow mass around the active working bodies (2) loosens, cuts and mixes, increasing the contact area with melting snow, thereby providing an increase in the intensity of the installation workflow. The lower (cold) layers of the mixture of melt water and the coolant are discharged through the overflow pipe (12) to the sewer network.

A temporary suspension of the operation of the snow melting plant, for example, with the expectation of delivery of snow by vehicles, occurs with the continued circulation of coolant in the standby mode (with minimal pressure). Partial shutdown of work (for example, nighttime) implies operation of the circulation system in a gentle mode (with minimum pressure when heated to a lower temperature, or emptying of the bunker for receiving and melting snow (1) and operation of the heat exchanger (8) in standby mode (minimum heating) . Full stop of work for a long period requires a complete stop of heating and emptying of the bunker for receiving and melting snow (1) and heat exchanger (8) by opening the drain pipes (13) with valves (14).

Installation for melting snow can be used in urban utilities and enterprises with private territory and free space. The use of the installation for melting snow allows for a high intensification of the process of thawing the snow mass, by creating large areas of its contact with the coolant.

Claims (1)

Installation for melting snow, consisting of a bunker for receiving and melting snow, a heat exchanger, a pump, a piping system, an active working body, characterized in that the active working body, which is a hollow shaft with nozzles placed on it, installed along the entire length of the hollow shaft offset, performs rotation due to the reactive force of the coolant, which is sprayed into the snow massif using spray nozzles mounted on the ends of the nozzles at an angle of 90 °, with the active working body located Vertical, and installed in the bottom of the hopper receiving and melting snow, and the hollow shafts are connected to the fixed tube feeding coolant through rotary joints.

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