CN212236484U - A fog cannon machine with preheating function - Google Patents

Abstract

The utility model discloses a fog cannon machine with a preheating function, comprising a spray cannon barrel, an angle adjustment device, a rotating device and a preheating box; the rotating device is installed on the preheating box, and the spray cannon barrel is hinged on the rotating device, An angle adjustment device is arranged on the spray gun barrel and at the hinge of the rotating device; a plurality of nozzles and a fan are arranged in the spray gun barrel; the preheating box includes a shell, a heating water pipe and a temperature control switch; the heating water pipe is arranged on the In the casing, the heating water pipe is provided with an electric heating rod, and the electric heating rod is connected to the temperature control switch; the heating water pipe is respectively connected to the water outlet and the water inlet on the casing; the water outlet is connected to the nozzle through the water lead pipe. The utility model can preheat the spray water, increase the water temperature and reduce its surface tension, thereby reducing the spray particle size and improving the dust removal effect. The utility model also has the advantages of simple structure, simple operation, easy maintenance and high safety.

Description

A fog cannon machine with preheating function

technical field

The utility model belongs to the technical field of environmental protection, in particular to a fog cannon with a preheating function.

Background technique

Fog cannon is a water mist dust suppression and dust reduction equipment, which is widely used in dust removal and dust reduction in coking plants, coal yards, mines, steel plants, cement, chemicals, stone plants and other industries with serious dust. The dust reduction effect of the fog cannon is closely related to the surface tension of water. Normally, the surface tension of water increases gradually with decreasing temperature. In the northern region in winter, the water temperature of the water supply pipe network is low, which affects the normal atomization effect of the fog cannon. The existing fog cannon device usually pressurizes the water in the water tank or the water supply pipe network for spraying, and the actual dust reduction efficiency is limited by the water temperature of the water supply pipe network. In order to solve the above problems, the utility model designs a fog cannon machine with a preheating function.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the utility model provides a fog cannon machine with a preheating function, which is simple in structure, convenient in operation, and can improve the dust removal efficiency of fog cannon vehicles used in construction work in the north in winter.

The technical scheme adopted by the utility model is: a fog cannon machine with a preheating function, comprising a spray cannon barrel, an angle adjustment device, a rotating device and a preheating box; the rotating device is installed on the preheating box, and the spray cannon barrel is hinged on the preheating box. On the rotating device, an angle adjustment device is arranged on the spray gun barrel and the hinge of the rotating device; a plurality of nozzles and a fan are arranged in the spray gun barrel; the preheating box includes a shell, a heating water pipe and a temperature control switch; The heating water pipe is arranged in the casing, and an electric heating rod is arranged in the heating water pipe, and the electric heating rod is connected to the temperature control switch; the heating water pipe is respectively connected to the water outlet and the water inlet on the casing;

In the above fog cannon machine with preheating function, an inspection door is provided on the casing, and a console of a temperature control switch is arranged on the inspection door; the console is electrically connected to the temperature control switch.

In the above-mentioned fog cannon with preheating function, a water pipe is also arranged in the shell of the preheating box. The water inlet, the water inlet of the pump is connected to the water inlet; the other ends of the water pipe and the heating water pipe are connected to the water outlet through a tee.

In the above-mentioned fog cannon with preheating function, the shell of the preheating box is in the shape of a rectangular parallelepiped, and at least one side surface of the shell is provided with an inspection door.

Compared with the prior art, the beneficial effects of the present utility model are: the utility model can preheat the spray water, reduce the surface tension of the water, and change the spray droplets by setting the preheating box integrated with the fog cannon machine. particle size, so as to achieve the purpose of improving the dust suppression efficiency of the fog cannon. The utility model is provided with a console on the shell, which can observe the water temperature in the heat pipe in real time, change the preset temperature of the temperature control switch, and automatically cut off the current when the heating circuit is short-circuited. The preheating box of the utility model is provided with a reversing valve and a water pipe. When the external water temperature reaches the dust reduction requirement, the water can be led to the ordinary water pipe through the regulating valve, and it can be used as a general fog cannon. The utility model also has the advantages of simple structure, convenient operation, easy maintenance and high safety.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a cross-sectional view of the preheating box of the present invention.

In the picture: 1- water intake pipe; 2- spray gun barrel; 3- angle adjustment mechanism; 4- fan; 5- rotating mechanism; console; 8- inspection door; 201- water outlet; 202- temperature control switch; heating water pipe ; 204 - electric heating rod; 205 - water pump; 206 - water inlet; 207 - reversing valve; 208 - ordinary water pipe.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the utility model discloses a fog cannon machine with a preheating function, comprising a spray cannon barrel 2, an angle adjustment mechanism 3, a rotating mechanism 5 and a preheating box. The rotating mechanism 5 is installed on the top of the preheating box, and the spray gun barrel 2 is hinged on the rotating mechanism 5, and the rotating mechanism 5 enables the spray gun barrel 2 to rotate 360° in the horizontal plane. The spray gun barrel 2 is provided with an angle adjustment mechanism 3 at the hinge joint with the rotation mechanism 5 , and the angle adjustment mechanism 3 is used to adjust the pitch angle of the spray gun barrel 2 . The spray barrel 2 is provided with several nozzles and a fan 4 .

As shown in FIG. 2 , the preheating box includes a housing, a heating water pipe 203, a temperature control switch 202, a water pipe 208, a water pump 205 and a reversing valve 207. One end of the water pipe 208 and the heating water pipe 203 is connected to the reversing valve 207 Two outlets, the inlet of the reversing valve 207 is connected with the water outlet of the water pump 205, and the water inlet of the water pump 205 is connected with the water inlet 206 on the casing. The other ends of the water pipe 208 and the heating water pipe 203 are connected to the water outlet 201 on the housing through a tee. The heating water pipe 203 is provided with an electric heating rod 204 , and the electric heating rod 204 is connected to the temperature control switch 202 . The casing is in the shape of a cube, and at least one side thereof is provided with an access door 8 . An inspection door 8 is provided with a console 6 of a temperature control switch; the console 6 is electrically connected to the temperature control switch 202 . The console 6 can control the temperature control switch 202 to automatically adjust the temperature or cut off the current according to the water temperature in the pipe. The water outlet is connected with the nozzle in the spray gun barrel 2 through the water lead pipe 2 .

When the utility model is in operation, the external water enters from the water inlet 206 and flows through the reversing valve 207 after being pressurized by the water pump 205 . The reversing valve 207 can control the flow direction of the water. When the water temperature is low, the reversing valve 207 leads the water to the heating water pipe 203 . When the water temperature is normal, the reversing valve 207 can also be adjusted to lead the water to the water pipe 208 . When the water flows to the water pipe 208, the water in the water pipe 208 is directly used for spraying by the nozzle through the water outlet 201 and the water introduction pipe 1. When the water flows to the heating water pipe 203, the electric heating rod 204 arranged in the heating water pipe 203 emits a large amount of heat and is absorbed by the water, thereby increasing the temperature of the water. In addition, the real-time water temperature can be viewed through the console 6, and the preheating value of the temperature control switch 202 can be adjusted through the console 6 to independently master the required heating temperature. When the heating circuit is short-circuited, the console 6 can control the temperature control switch 202 to automatically cut off the current. After the water in the heating water pipe 203 is heated up, it also flows through the water outlet 201 and is used by the water diversion pipe 1 for the nozzle. At the same time, adjusting the power of the fan 4 can achieve the effect of controlling the spray distance of the fog cannon machine.

The utility model improves the principle of dust removal effect:

One is the effect of temperature on the surface tension of the liquid: on the one hand, as the temperature increases, the thermal motion of the molecules intensifies, the kinetic energy increases, and the intermolecular attraction weakens, thereby reducing the energy required for the liquid molecules to move from the interior to the surface; on the other hand, The density difference between the two bulk phases adjacent to the surface layer becomes smaller, so the surface tension decreases. The macroscopic performance of these two factors is that the surface tension decreases with the increase of temperature.

The second is the influence of surface tension on the particle size of the droplets: the atomization of the nozzle is a multi-phase and transient process. Most of the atomization energy must be consumed to break the liquid at the nozzle to form a film or liquid filament, and then produce a relatively small amount of energy. Large velocity gradient, through high-speed friction with air, stretches the film or liquid filament to the breaking point, and finally forms mist droplets. In the initial unstable and rising stage of the liquid jet, the surface tension has a certain hindering effect on the atomization of the liquid. Studies have shown that the droplet size is proportional to the third power of the surface tension. That is, the smaller the surface tension, the smaller the droplet size.

For the spray dust reduction method, under the same amount of water, the smaller the particle size of the droplets, the more the number of droplets per unit space, the longer the floating time in the air, the more complete the contact with the dust, and the better the dust removal effect. In the cold season in the north, the water temperature of the spray water is sometimes even close to zero, which has a certain impact on the dust reduction effect. The utility model increases the water temperature by adding an integrated preheating device, thereby improving the dust removal efficiency under cold conditions.

Claims (4)

1. The utility model provides a fog gun machine that has preheating function which characterized in that: comprises a spraying gun barrel, an angle adjusting device, a rotating device and a preheating box; the rotating device is arranged on the preheating box, the spraying gun barrel is hinged on the rotating device, and an angle adjusting device is arranged at the hinged position of the spraying gun barrel and the rotating device; a plurality of nozzles and a fan are arranged in the spray gun barrel; the preheating box comprises a shell, a heating water pipe and a temperature control switch; the heating water pipe is arranged in the shell, an electric heating rod is arranged in the heating water pipe, and the electric heating rod is connected with the temperature control switch; the heating water pipe is respectively connected with a water outlet and a water inlet on the shell; the water outlet is connected with the nozzle through a water conduit.

2. The fog gun machine with the preheating function according to claim 1, characterized in that: an access door is arranged on the shell, and a console of a temperature control switch is arranged on the access door; the console is electrically connected with the temperature control switch.

3. The fog gun machine with the preheating function according to claim 1, characterized in that: a water pipe is also arranged in the shell of the preheating box, one end of the water pipe and one end of the heating water pipe are respectively connected to two water outlets of a reversing valve, an inlet of the reversing valve is connected with a water outlet of a water pump, and a water inlet of the water pump is connected with a water inlet; the other ends of the water pipe and the heating water pipe are connected with a water outlet through a tee joint.

4. The fog gun machine with the preheating function according to claim 1, characterized in that: the shell of the preheating box is cuboid, and at least one side surface of the shell is provided with an access door.

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