CN211886037U - Cyclone dust collecting system for rail grinding - Google Patents

Abstract

The utility model provides a whirlwind formula dust collecting system for rail is polished. The method comprises the following steps: the dust collector comprises a dust collection port, an air inlet pipe, a total dust collection box, a fan, a cyclone dust collector, an air outlet and a battery; and the air purification device consists of a fan, a filter element cabin, a dust removal filter element and a filter element dust collection box. The dust collection port is fixed on the polishing vehicle body, the dust collection port is consistent with the splashing direction of polishing sparks of the polishing head, the air inlet pipe is communicated with the dust collection port, the air inlet of the cyclone dust collector is communicated with the upper end of the air inlet pipe, and a first dust collection box for collecting dust is arranged below the dust discharge port of the cyclone dust collector; the air outlet of the fan is communicated with the air outlet channel and leads to the outside air. The air inlet of the filter element cabin is communicated with the air outlet of the cyclone dust collector, and the air outlet of the filter element cabin is communicated with the air inlet of the fan. The utility model discloses a layout mode of system can collect the dust that polishes the production specially for the abrasive band formula rail operation design of polishing to filter smog, whole set of system can be by the vehicle-mounted DC power supply, but the safety ring protects the noise and hangs down.

Description

Cyclone dust collecting system for rail grinding

Technical Field

The utility model relates to a rail technical field that polishes especially relates to a whirlwind formula dust collecting system for rail is polished.

Background

When the steel rail is polished, a large amount of high-temperature scrap iron is generated under the action of abrasive belt grinding of the steel rail, the high-temperature scrap iron is easy to cause fire, the scrap iron seriously harms the health of workers, and the environment around the railway is polluted.

In recent years, a dust collecting device is installed on an advanced rail grinding train, high-temperature dust generated in grinding operation is filtered by a filter and then collected in a centralized manner, so that fire disasters can be avoided, the air quality around the operation can be greatly improved, and the body health of workers and the environment around a railway can be protected. Because of the abrasive band polish the abrasive dust granule that produces great, traditional dust collecting system is not applicable to the track of this kind of mode and polishes, can also be the same to the grinding volume of rail according to the degree of disease during polishing, it is many to frequently appear one section distance iron fillings that polish the production, one section distance is then less, and the rail about different diseases between the thigh lead to about the rail grinding volume of rail also different, the condition of only polishing a rail can appear even, can consume great power to such operating condition of current dust collecting system, cause the waste. And the existing dust collecting system for rail grinding is mostly provided with a generator, so that the weight is heavy, the safety is poor, and the dust collecting system can generate great noise and strong smell of gasoline or diesel oil combustion during working and is harmful to workers.

Therefore, in order to improve the working efficiency and safety of the dust collecting system for rail grinding, reduce the weight and the energy consumption, the development of a new dust collecting system is an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a whirlwind formula dust collecting system for rail is polished to realize a low energy consumption, effectual whirlwind formula dust collecting system of collection dirt.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A cyclone-type dust collecting system for rail grinding, comprising: the dust collector comprises a dust collection port, an air inlet pipe, a total dust collection box, a fan, a cyclone dust collector, an air outlet and a battery;

the dust collection port is fixed on the polishing vehicle body, the dust collection port is opposite to the splashing direction of sparks of the polishing head, the air inlet pipe is vertically distributed in the polishing vehicle body and communicated with the dust collection port, the cyclone dust collector and the air inlet pipe are arranged in parallel and fixed on the polishing vehicle body, the air inlet of the cyclone dust collector is communicated with the upper end of the air inlet pipe, and a main dust collection box for collecting dust is arranged below the dust discharge port of the cyclone dust collector; the air outlet of the fan is communicated with the air outlet channel and is communicated with the outside air;

the air draft operation through the fan forms the negative pressure, and under the effect of negative pressure, dirty gas enters into the intake pipe through the dust absorption mouth, reentries cyclone, and the dust that cyclone filtered is collected in total dust collection box, and gas after cyclone primary filtration continues to get into the filter core under the effect of negative pressure and carries out the secondary filter.

Preferably, the system further comprises an air purification device consisting of a fan, a filter element cabin, a dust removal filter element and a filter element dust collection box, wherein an air inlet of the filter element cabin is communicated with an air outlet of the cyclone dust collector, an air outlet of the filter element cabin is communicated with an air inlet of the fan, the filter element cabin is positioned above the filter element dust collection box, the filter element dust collection box collects dust filtered by the dust removal filter element, the dust removal filter element is arranged on a fixed filter plate at the bottom of the filter element cabin, the fan forms negative pressure for air suction of the filter element cabin, and the filter element cabin sucks dust-containing gas;

the gas after rough filtration enters a filter element cabin of the air purification device through an air outlet of the cyclone dust collector, the gas is filtered in the filter element cabin through a dust removal filter element, and the filtered gas is discharged to the outside of the vehicle body through an air outlet of the fan through an air outlet channel.

Preferably, the system also comprises a blowing device, the blowing device is arranged at the position, corresponding to the filter element, on the outer side of the filter element cabin, and the blowing device blows dust attached to the dust removal filter element in the reverse direction.

Preferably, the dust suction ports comprise a first dust suction port and a second dust suction port, the two dust suction ports respectively face the spark spraying directions of the corresponding polishing heads, and the two dust suction ports and the corresponding polishing heads deflect and move transversely together and can move up and down independently.

Preferably, the air inlet pipe comprises a first air inlet pipe and a second air inlet pipe, the lower end of the first air inlet pipe is communicated with the outlet end of the first dust suction port, and the lower end of the second air inlet pipe is communicated with the outlet end of the second dust suction port.

Preferably, the cyclone dust collector comprises a first air inlet and a second air inlet, the first air inlet is communicated with the upper end of the first air inlet pipe, the second air inlet is communicated with the upper end of the second air inlet pipe, each air inlet is provided with an electromagnetic valve, and the electromagnetic valves can control whether the air inlet pipes are communicated with the cyclone dust collector or not.

Preferably, the cyclone dust collector comprises an outer cylinder and a core cylinder arranged in the outer cylinder, wherein the lower part of the outer cylinder is firstly in an inverted cone shape with a cross section area gradually reduced downwards, and then is in a barrel shape with a cross section area unchanged and inserted into the total dust collecting box.

Preferably, an arc baffle is arranged below a hole of the main dust collection box communicated with the cyclone dust collector at a certain distance, and a convex surface of the arc baffle faces the cyclone dust collector, so that the falling dust is uniformly dispersed in the drawer.

Preferably, the total dust collecting box and the filter element dust collecting box are internally provided with material level sensors for monitoring the dust accumulation height, the material level sensors are in circuit connection with the main controller, and when dust in the total dust collecting box and the filter element dust collecting box reaches a preset position, the material level sensors send signals to the main controller.

Preferably, set up fire prevention chain and fire prevention valve in the intake pipe to be furnished with temperature sensor, temperature sensor and master controller circuit connection, the temperature of inspiratory gas is greater than the setting value in the intake pipe, and temperature sensor sends a signal to the master controller, and the master controller cuts off the power of fan, stops pulse jetting, closes the fire prevention valve simultaneously.

By the above-mentioned the embodiment of the utility model provides a technical scheme can see out, the utility model discloses a whirlwind formula dust collecting system for rail is polished by DC power supply to carrying out the two-stage to containing the abrasive dust gas and filtering, it is more thorough to the filtration of dust, and prolongs the gaseous route that gets into air purification device of dirt, makes the gaseous cooling of dirt more abundant, reduces air purification device because the risk that high temperature arouses the conflagration, and safe environmental protection noise is low.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a cyclone dust collecting system for rail grinding according to an embodiment of the present invention;

FIG. 2 is a rear view of the system shown in FIG. 1;

fig. 3 is a structural diagram of a total dust collecting box in a cyclone dust collecting system for rail grinding according to an embodiment of the present invention;

in the figure:

1. dust absorption mouth, 2, intake pipe, 3, total dust collecting box, 4, fan, 5, filter core dust collecting box, 6, fixed filter plate, 7, dust removal filter core, 8, jetting device, 9, cyclone, 10, solenoid valve, 11, air outlet, 12, collection dirt drawer.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

For the convenience of understanding the embodiments of the present invention, the following description will be given by way of example only with reference to the accompanying drawings, and the embodiments are not limited thereto.

The embodiment of the present invention provides a cyclone dust collecting system for rail grinding, which has a schematic structural view as shown in fig. 1 and a rear view as shown in fig. 2. The method comprises the following steps: the dust collection device comprises a dust collection port 1, an air inlet pipe 2, a main dust collection box 3, a fan 4, a filter element dust collection box 5, a fixed filter plate 6, a dust removal filter element 7, a blowing device 8, a cyclone dust collector 9, an electromagnetic valve 10, an air outlet 11, a dust collection drawer 12 and a plurality of batteries.

The plurality of batteries are used as a power supply of the system, the rechargeable direct current lithium battery is adopted, the rechargeable direct current lithium battery has the advantages of light weight, large power storage capacity, quick charging and the like, the output direct current voltage is 110V, the walking and polishing unit and the dust collecting system of the polishing trolley are separately powered, and the corresponding battery or batteries can ensure that the functions of the polishing trolley cannot be completely disabled due to insufficient power, if the polishing unit is out of power, the trolley can still walk and return, and the like.

The inner surface of the dust suction port 1 is provided with a layer of ceramic or asbestos cloth, and the dust suction port 1 comprises a first dust suction port and a second dust suction port. Avoid high temperature iron fillings gathering reunion, influence the collection dirt effect, above-mentioned first dust absorption mouth and second dust absorption mouth are just respectively to the first spill direction and the second spill direction of the polishing spark of head of polishing, and first dust absorption mouth and second dust absorption mouth can deflect, the sideslip together with the head of polishing, can realize reciprocating alone simultaneously.

The air inlet pipe 2 is vertically distributed inside the grinding wagon, the air inlet pipe 2 comprises a first air inlet pipe and a second air inlet pipe, the lower end of the first air inlet pipe is communicated with the outlet end of the first dust suction port, and the lower end of the second air inlet pipe is communicated with the outlet end of the second dust suction port. The air inlet pipe 2 can be preferably a corrugated pipe, has good flexibility, can meet the requirement of displacement change of the suspension position and the operation position of the grinding device, prolongs the filtering path of high-temperature dust to a certain extent, and is convenient for cooling.

The cyclone dust collector 9 and the air inlet pipe 2 are arranged in parallel and fixed on the polishing vehicle body. The cyclone 9 comprises a first inlet and a second inlet. The first air inlet is communicated with the upper end of a first air inlet pipe, the second air inlet is communicated with the upper end of a second air inlet pipe, each air inlet is provided with an electromagnetic valve 10, and a main dust collection box for collecting dust is arranged below a dust discharge port at the lower end of the cyclone dust collector 9; the cyclone dust collector 9 and the air inlet pipe 2 are generally detachably and fixedly connected, for example, by clamping connection, and can also be set in a welding mode, and the like, and can be selected by oneself.

Whether the air inlet pipe 2 can be controlled by the electromagnetic valve 10 to be communicated with the cyclone dust collector 9 or not, and whether the corresponding dust suction port 1 works or not is further controlled, so that the switch of the electromagnetic valve 10 can be adjusted according to the amount of scrap iron generated by the actual working condition of polishing, and meanwhile, the fan power adjusting knob capable of controlling the air volume of the fan 4 is operated, so that the power of the fan is proper, and the purpose of saving electric power is achieved.

The air purification device and the cyclone dust collector 9 are arranged in parallel, and the air purification device comprises a fan 4, a filter element cabin, a dust removal filter element 7 and a filter element dust collection box 5. Wherein, the filter core cabin is located the top of filter core dust collection box 5, and fan 4 forms the negative pressure to filter core cabin convulsions to make the filter core cabin can carry out effectual suction to dirty gas. The dust removal filter element 8 is arranged on the fixed filter plate 6 at the bottom of the filter element cabin, and is generally fixedly connected with the filter element cabin in a detachable mode, for example, the dust removal filter element is connected with the filter element cabin through threads, and the dust removal filter element can be arranged according to actual needs. The filter element dust collection box 5 is arranged below the filter element cabin so as to collect dust filtered by the dust removal filter element 7, the air inlet of the filter element cabin is communicated with the air outlet of the cyclone dust collector 9, the air outlet of the filter element cabin is communicated with the air inlet of the fan 4, and the air outlet 11 of the fan 4 is communicated with the air outlet channel and leads to outside air.

The cyclone dust collector 9 comprises an outer cylinder and a core cylinder arranged in the outer cylinder, wherein the lower part of the outer cylinder is firstly in an inverted cone shape with the cross section area gradually reduced downwards, and then is in a barrel shape with the cross section area unchanged and inserted into the total dust collection box 3; the back taper type urceolus makes the area of contact of lateral wall and dusty gas increase, under the effect of centrifugal force for the dust in the dusty gas is changeed by the separation. Dusty gas enters through the air inlet of the cyclone dust collector 9, dust with heavier particles falls under the action of centrifugal force, and dusty gas with finer particles enters the filter element cabin in the air purification device through the air outlet at the upper end of the cyclone dust collector 9.

Fig. 3 is the embodiment of the utility model provides a total dust collecting box's internal structure chart, as shown in fig. 3, total dust collecting box 3 is provided with the cambered surface baffle with the communicating below certain distance in hole of cyclone 9, and the convex surface of this cambered surface baffle faces cyclone 9 to the dust homodisperse that falls is in drawer 12, and has avoided the dust in total dust collecting box 3 to be inhaled in cyclone 9.

Material level sensors for monitoring the dust accumulation height are arranged in the total dust collection box 3 and the filter element dust collection box 5. In order to make the collection dirt operation more automatic, can set up level sensor in total dust collection box 3 and filter core dust collection box 5, level sensor's the position that sets up can select by oneself, level sensor generally with the master controller circuit connection of grinding wagon, when total dust collection box 3, when dust in the filter core dust collection box 5 reaches the preset position, level sensor can be respectively to master controller signals, so that the timely clearance of dust, only need during the clearance with be located the drawer of dust collection box bottom pull out dust such as iron fillings can.

The number of the dust removal filter elements 7 can be properly increased or decreased according to the working condition, each dust removal filter element 7 is vertically arranged on the fixed filter plate 6 at the bottom of the filter element cabin, the periphery of each dust removal filter element 7 is a filtering part, and the height of the fixed filter plate 6 is moderate, so that a space for smooth circulation of gas is reserved between the dust removal filter elements 11 and the top of the filter element cabin.

The blowing device 8 is used for blowing the dust attached to the dust removal filter element 7 in a reverse direction, and preferably, the blowing device 8 is arranged at a position corresponding to the dust removal filter element 7; preferably, the blowing device 8 is arranged outside the cartridge bay in a position corresponding to the cartridge 8; the blowing device 8 can be specifically an air cylinder and a pulse valve which are arranged outside the dust removal filter element 7, dust attached to the dust removal filter element 7 is blown away in a reverse direction, the blowing device 8 can be set to work once every 20s, one filter element is cleaned every time, ventilation is set to be 0.1s every time, and the cleaned dust falls into a drawer of the filter element dust collection box 5.

Preferably, a fire chain and a fire valve are arranged in the air inlet pipe 2, and a temperature sensor is provided. Temperature sensor and master controller circuit connection, the temperature of inhaling gas in the intake pipe is greater than the setting value, and temperature sensor sends a signal to the master controller, and the master controller cuts off the power of fan, stops pulse jetting, closes the fire prevention valve simultaneously to prevent high temperature gas damage filter core 7.

Above-mentioned the utility model discloses a whirlwind formula dust collecting system's that is used for abrasive band to polish abrasive dust to collect working process includes: form the negative pressure to the convulsions of filter core cabin through fan 4, under the effect of negative pressure, dusty gas gets into to first intake pipe and the second intake pipe that corresponds intake pipe 2 through the first dust absorption mouth and the second dust absorption mouth of dust absorption mouth 1, moves from bottom to top through intake pipe 2 to get into cyclone 9 through the upper end of intake pipe 2. Dirty gas is from last rotatory down in cyclone 9, under the effect of centrifugal force, large granule dust falls into the drawer 12 in total dust collection box 3 in gaseous, the gas outlet that the gas that passes through cyclone 9 through the coarse filtration enters into air purification device's filter core cabin, filter gas through dust removal filter core 7 in filter core cabin, the dust of filtering is collected through filter core dust collecting part, the gas outlet 11 through fan 4 after the filtration discharges the automobile body outside through the exhaust passage, accomplish dirty gas's filtration.

Whether the electromagnetic valve 10 of the air inlet located in the cyclone dust collector 9 can control the air inlet pipe 2 to be communicated with the cyclone dust collector 9 or not, and further whether the corresponding dust suction port 1 works or not is controlled, so that the switch of the electromagnetic valve 10 can be adjusted according to the actual working condition of polishing and the amount of generated scrap iron, and meanwhile, the adjusting knob capable of controlling the output power of the fan 4 is adjusted to change the output air quantity of the fan 4, so that the purpose of saving electric power is achieved.

To sum up, the utility model discloses a whirlwind formula dust collecting system for rail is polished by DC power supply, can carry out the two-stage to dirty gas and filter, and it is more thorough to the filtration of dust, and prolongs dirty gas and get into air purification device's route for dirty gas's cooling is abundant more, reduce air purification device because the risk of high temperature arouses the conflagration, and safe environmental protection noise is low.

The embodiment of the utility model provides a whirlwind formula dust collecting system for abrasive band is polished abrasive dust and is collected is particularly useful for the equipment of polishing of metal dust in needs filtered air such as bull abrasive band rail dolly of polishing, can be according to the actual condition of polishing and how much the iron fillings that produce, adjusts the output amount of wind size of fan, realizes the purpose of saving electric power, solves unnecessary electric power waste and the too big noise and the fuel smell scheduling problem that the dust collecting system caused when removing dust.

Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A cyclone dust collection system for rail grinding comprising: the dust collector comprises a dust collection port, an air inlet pipe, a total dust collection box, a fan, a cyclone dust collector, an air outlet and a battery;

the dust collection port is fixed on the polishing vehicle body, the dust collection port is opposite to the splashing direction of sparks of the polishing head, the air inlet pipe is vertically distributed in the polishing vehicle body and communicated with the dust collection port, the cyclone dust collector and the air inlet pipe are arranged in parallel and fixed on the polishing vehicle body, the air inlet of the cyclone dust collector is communicated with the upper end of the air inlet pipe, and a main dust collection box for collecting dust is arranged below the dust discharge port of the cyclone dust collector; the air outlet of the fan is communicated with the air outlet channel and is communicated with the outside air;

the air draft operation through the fan forms the negative pressure, and under the effect of negative pressure, dirty gas enters into the intake pipe through the dust absorption mouth, reentries cyclone, and the dust that cyclone filtered is collected in total dust collection box, and gas after cyclone primary filtration continues to get into the filter core under the effect of negative pressure and carries out the secondary filter.

2. The system of claim 1, further comprising an air purification device consisting of a fan, a filter cabin, a dust removal filter and a filter dust collection box, wherein an air inlet of the filter cabin is communicated with an air outlet of the cyclone dust collector, an air outlet of the filter cabin is communicated with an air inlet of the fan, the filter cabin is positioned above the filter dust collection box, the filter dust collection box collects dust filtered by the dust removal filter, the dust removal filter is arranged on a fixed filter plate at the bottom of the filter cabin, the fan draws air into the filter cabin to form negative pressure, and the filter cabin sucks dust-containing gas;

the gas after rough filtration enters a filter element cabin of the air purification device through an air outlet of the cyclone dust collector, the gas is filtered in the filter element cabin through a dust removal filter element, and the filtered gas is discharged to the outside of the vehicle body through an air outlet of the fan through an air outlet channel.

3. The system of claim 2, further comprising a blowing device disposed outside the cartridge compartment at a position corresponding to the filter cartridge, the blowing device blowing dust attached to the dust removing filter cartridge in a reverse direction.

4. The system of claim 1, wherein the suction ports comprise a first suction port and a second suction port, the suction ports respectively face the spark discharge direction of the respective polishing head, and the suction ports are deflected and laterally moved together with the respective polishing head while being independently movable up and down.

5. The system of claim 4, wherein the air intake duct comprises a first air intake duct and a second air intake duct, a lower end of the first air intake duct communicates with an outlet end of the first dust suction port, and a lower end of the second air intake duct communicates with an outlet end of the second dust suction port.

6. The system of claim 5, wherein the cyclone comprises a first inlet port and a second inlet port, the first inlet port communicating with an upper end of the first inlet pipe, the second inlet port communicating with an upper end of the second inlet pipe, each inlet port being provided with a solenoid valve capable of controlling whether the inlet pipe communicates with the cyclone.

7. The system of claim 1, wherein the cyclone comprises an outer tub and a core tub disposed inside the outer tub, and the lower portion of the outer tub is first formed in an inverted cone shape having a cross-sectional area gradually decreasing downward, and then formed in a cylindrical shape having a cross-sectional area unchanged and inserted into the total dust box.

8. The system of claim 7, wherein a cambered baffle is arranged below the hole of the main dust collecting box communicated with the cyclone dust collector at a certain distance, and the convex surface of the cambered baffle is opposite to the cyclone dust collector so as to uniformly disperse the falling dust in the drawer.

9. The system as claimed in claim 2, wherein level sensors for monitoring the dust accumulation height are arranged in the main dust collecting box and the filter element dust collecting box, the level sensors are electrically connected with the main controller, and when dust in the main dust collecting box and the filter element dust collecting box reaches a preset position, the level sensors send signals to the main controller.

10. The system of claim 1, wherein a fireproof chain and a fireproof valve are arranged in the air inlet pipe, the fireproof chain and the fireproof valve are provided with a temperature sensor, the temperature sensor is in circuit connection with the main controller, when the temperature of the air sucked in the air inlet pipe is higher than a set value, the temperature sensor sends a signal to the main controller, the main controller cuts off the power supply of the fan, pulse blowing is stopped, and the fireproof valve is closed.

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