Control circuit of movable ash removal equipment and movable ash removal equipment

Abstract

According to the control circuit of the movable ash removal equipment and the movable ash removal equipment, after the start button is pressed down, supply of combustible gas can be automatically controlled through the first intermediate relay, and timing is conducted through the first time relay. After the combustible gas is supplied for a period of time, the supply of oxygen can be automatically controlled through the first time relay and the second intermediate relay, and timing is carried out through the second time relay. After the oxygen is supplied for a period of time, the supply of the combustible gas and the oxygen can be automatically cut off through the third intermediate relay, and the mixed gas is ignited through the ignition module. Therefore, gas supply and ignition can be automatically realized only by pressing the start button by a user, so that the manual participation degree can be reduced, and the automation degree of boiler ash removal can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of boiler ash removal, and in particular to a control circuit of a movable ash removal device and the movable ash removal device. Background Art

[0002] In order to improve the thermal efficiency of the boiler, reduce the exhaust temperature of the boiler, reduce the corrosion of the boiler heating surface, and extend the service life of the boiler heating surface, it is necessary to clean the ash deposited on the boiler heating surface. At present, the ash deposit cleaning technologies commonly used in the industry include shock wave soot blowing and steam soot blowing. Among them, shock wave soot blowing refers to the use of high-temperature and high-pressure gas generated by the combustion of a mixture of combustible gas and air under specific conditions to form a shock wave, thereby removing the ash deposited on the boiler heating surface. Steam soot blowing refers to the use of high-temperature and high-pressure steam ejected from a rotating nozzle at high speed to generate a strong impact force to blow away the ash deposited on the heating surface. Shock wave soot blowing and steam soot blowing can effectively remove the ash deposited on the heating surface, thereby restoring the performance of the boiler and improving its operating efficiency.

[0003] Whether it is based on shock wave soot blowing or steam soot blowing for dust removal, it is necessary to install fixed dust removal equipment at a fixed position. Once the fixed dust removal equipment is installed, the dust removal position cannot be moved at will. Therefore, improper placement of the equipment or changes in the working conditions of the equipment during operation will greatly reduce the dust removal effect. At the same time, due to the fixed position of the equipment, the dust removal range is greatly limited, especially in locations far away from the equipment or in blind spots. Fixed dust removal equipment often finds it difficult to effectively remove dust in these locations.

[0004] In order to flexibly adjust the cleaning position and expand the cleaning range to overcome the above limitations, the prior art proposes a movable dust removal device, which can more comprehensively and efficiently clean the dust on the boiler heating surface. However, the inventors have found that the existing movable dust removal equipment requires manual control of the intake of combustible gas and air, and manual ignition of the mixed gas, which has a low degree of automation. Utility Model Content

[0005] The purpose of this application is to solve at least one of the above-mentioned technical defects, especially the technical defect of low degree of automation in the prior art.

[0006] In a first aspect, an embodiment of the present application provides a control circuit of a movable ash removal device, including: a start button, a first intermediate relay, a second intermediate relay, a third intermediate relay, a first time relay, a second time relay, a third time relay, a combustible gas supply module, an oxygen supply module and an ignition module;

[0007] The start button is electrically connected to the coil of the first intermediate relay, the normally closed contact of the third intermediate relay and the delayed closing contact of the first time relay, and the delayed closing contact of the first time relay is electrically connected to the coil of the second intermediate relay and the coil of the second time relay;

[0008] The delayed closing contact of the second time relay is electrically connected to the coil of the third time relay, the delayed opening contact of the third time relay and the coil of the third time relay respectively; the normally open contact of the first intermediate relay is electrically connected to the coil of the first time relay and the combustible gas supply module respectively; the normally open contact of the second intermediate relay is electrically connected to the oxygen supply module; the normally open contact of the third intermediate relay is electrically connected to the ignition module;

[0009] The normally open contact of the first intermediate relay, the normally open contact of the second intermediate relay, the normally closed contact of the third intermediate relay, the normally open contact of the third intermediate relay and the delayed disconnection contact of the third time relay are all used to electrically connect the live wire; the coil of the first intermediate relay, the coil of the second intermediate relay, the coil of the third intermediate relay, the coil of the first time relay, the coil of the second time relay and the coil of the third time relay, the combustible gas supply module, the oxygen supply module and the ignition module are all used to electrically connect the neutral wire;

[0010] The combustible gas supply module is used to control the movable ash removal equipment to supply combustible gas when powered; the oxygen supply module is used to control the movable ash removal equipment to supply oxygen when powered; and the ignition module is used to ignite the mixed gas composed of the combustible gas and the oxygen when powered.

[0011] In one embodiment, a normally open contact of the first intermediate relay is connected in parallel with the start button.

[0012] In one embodiment, the normally open contact of the third intermediate relay is connected in parallel with the delayed closing contact of the second time relay.

[0013] In one embodiment, the movable ash removal device includes an ignition gun, a combustible gas inlet, a combustible gas outlet, and a first pipeline for connecting the combustible gas inlet and the combustible gas outlet, the combustible gas inlet is used to connect to the combustible gas supply pipeline, and the combustible gas outlet is used to connect to the ignition gun;

[0014] The combustible gas supply module comprises a first solenoid valve and a second solenoid valve, wherein the first solenoid valve is arranged at one end of the first pipeline close to the combustible gas inlet, and the second solenoid valve is arranged at one end of the first pipeline close to the combustible gas outlet;

[0015] The first solenoid valve is electrically connected to the normally open contact of the first intermediate relay and is used to connect the neutral line; the second solenoid valve is electrically connected to the normally open contact of the first intermediate relay and is used to connect the neutral line.

[0016] In one embodiment, the movable ash removal device comprises an ignition gun, an oxygen inlet, an oxygen outlet, and a second pipe for connecting the oxygen inlet and the oxygen outlet, wherein the oxygen inlet is used to connect to an oxygen supply pipe, and the oxygen outlet is used to connect to the ignition gun;

[0017] The oxygen supply module comprises a third solenoid valve and a fourth solenoid valve, wherein the third solenoid valve is arranged at one end of the second pipeline close to the oxygen inlet, and the fourth solenoid valve is arranged at one end of the second pipeline close to the oxygen outlet;

[0018] The third solenoid valve is electrically connected to the normally open contact of the second intermediate relay and is used to connect the neutral line; the fourth solenoid valve is electrically connected to the normally open contact of the second intermediate relay and is used to connect the neutral line.

[0019] In one embodiment, the movable ash removal device includes an ignition gun, and the ignition module includes an ignition transformer, and the ignition transformer contacts a spark plug of the ignition gun.

[0020] In one embodiment, the control circuit of the movable dust removal device further includes an emergency stop button;

[0021] The normally open contact of the first intermediate relay, the normally open contact of the second intermediate relay, the normally closed contact of the third intermediate relay, the normally open contact of the third intermediate relay and the delayed disconnection contact of the third time relay are all electrically connected to the live wire through the emergency stop button.

[0022] In one embodiment, the control circuit of the movable dust removal equipment further includes an air switch, and the air switch is connected between the emergency stop button and the live wire.

[0023] In a second aspect, an embodiment of the present application provides a movable dust removal device, comprising: a box, an ignition gun, and a control circuit of the movable dust removal device described in any of the above embodiments;

[0024] The box body has a receiving cavity, a first button hole, a combustible gas inlet and outlet, and an oxygen inlet and outlet. The control circuit of the movable ash removal device is arranged in the receiving cavity, and the start button extends out of the box from the first button hole.

[0025] The ignition gun is connected to the combustible gas inlet and outlet and the oxygen inlet and outlet respectively, and is used to mix the combustible gas and oxygen under the control of the combustible gas supply module and the oxygen supply module, and ignite the mixed gas composed of the combustible gas and the oxygen under the triggering of the ignition module.

[0026] In one embodiment, the ignition gun has a gas outlet, the gas outlet is covered with a PE bag, and the PE bag is covered with a soaked cotton bag.

[0027] In the control circuit of the movable ash removal equipment and the movable ash removal equipment provided in some embodiments of the present application, after the start button is pressed, the supply of combustible gas can be automatically controlled by the first intermediate relay, and timing is performed by the first time relay. After the combustible gas is supplied for a period of time, the supply of oxygen can be automatically controlled by the first time relay and the second intermediate relay, and timing is performed by the second time relay. After the oxygen is supplied for a period of time, the supply of combustible gas and oxygen can be automatically disconnected by the third intermediate relay, and the mixed gas can be ignited by the ignition module. In this way, the gas supply and ignition can be automatically realized by the user only needing to press the start button, thereby reducing the degree of manual participation and improving the degree of automation of boiler ash removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 A circuit diagram of a control circuit of a movable dust removal device in one embodiment;

[0030] Figure 2 A front view of a movable dust removal device in one embodiment;

[0031] Figure 3 A schematic diagram of the structure of an ignition gun in one embodiment;

[0032] Description of reference numerals:

[0033] QF1: air switch, JT: emergency stop button, SB1: start button, KA1: first intermediate relay, KA2: second intermediate relay, KA3: third intermediate relay, KT1: first time relay, KT2: second time relay, KT3: third time relay, KS1: first solenoid valve, KS2: second solenoid valve, KS3: third solenoid valve, KS4: fourth solenoid valve, DH01: ignition module, 101: combustible gas inlet, 102: combustible gas outlet, 103: first pipeline, 104: oxygen inlet, 105: oxygen outlet, 106: second pipeline, 200: box body, 300: handle. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] In one embodiment, the present application provides a control circuit for a movable dust removal device. Figure 1 As shown, the control circuit may include: a start button SB1, a first intermediate relay KA1, a second intermediate relay KA2, a third intermediate relay KA3, a first time relay KT1, a second time relay KT2, a third time relay KT3, a combustible gas supply module, an oxygen supply module and an ignition module DH01.

[0036] Among them, the start button SB1 is electrically connected to the coil of the first intermediate relay KA1, the normally closed contact of the third intermediate relay KA3 and the delayed closing contact of the first time relay KT1, and the delayed closing contact of the first time relay KT1 is electrically connected to the coil of the second intermediate relay KA2 and the coil of the second time relay KT2.

[0037] The delayed closing contacts of the second time relay KT2 are electrically connected to the coil of the third time relay KT3, the delayed opening contacts of the third time relay KT3 and the coil of the third time relay KT3 respectively; the normally open contacts of the first intermediate relay KA1 are electrically connected to the coil of the first time relay KT1 and the combustible gas supply module respectively; the normally open contacts of the second intermediate relay KA2 are electrically connected to the oxygen supply module; the normally open contacts of the third intermediate relay KA3 are electrically connected to the ignition module DH01.

[0038] The normally open contact of the first intermediate relay KA1, the normally open contact of the second intermediate relay KA2, the normally closed contact of the third intermediate relay KA3, the normally open contact of the third intermediate relay KA3 and the delayed disconnection contact of the third time relay KT3 are all used to electrically connect the live wire; the coil of the first intermediate relay KA1, the coil of the second intermediate relay KA2, the coil of the third intermediate relay KA3, the coil of the first time relay KT1, the coil of the second time relay KT2 and the coil of the third time relay KT3, the combustible gas supply module, the oxygen supply module and the ignition module DH01 are all used to electrically connect the neutral wire.

[0039] Specifically, when the start button SB1 is pressed, the live wire, the normally closed contact of the third intermediate relay KA3, the emergency stop button JT, the coil of the first intermediate relay KA1 and the neutral wire form a closed loop, and the normally open contact of the first intermediate relay KA1 is energized, so that the live wire, the combustible gas supply module and the neutral wire form a closed loop, and the live wire, the coil of the first time relay KT1 and the neutral wire form a closed loop, and the combustible power supply module and the coil of the first time relay KT1 are energized. When the combustible gas supply module is energized, it controls the movable ash removal equipment to supply combustible gas, thereby realizing the automatic supply of combustible gas. In one example, the combustible gas described herein may be acetylene.

[0040] When the coil of the first time relay KT1 is energized, the first time relay KT1 starts timing, and when the timing reaches a first preset time threshold (for example, 12 seconds), the delayed closing contact of the first time relay KT1 is closed, and the delayed opening contact of the first time relay KT1 is opened.

[0041] When the delayed closing contact of the first time relay KT1 is closed, the coil of the second intermediate relay KA2 and the coil of the second time relay KT2 are energized, so that the live wire, the normally open contact of the second intermediate relay KA2, the oxygen supply module and the neutral wire form a closed loop, and the oxygen supply module is energized. When energized, the oxygen supply module controls the movable dust removal equipment to supply oxygen, thereby realizing automatic oxygen supply.

[0042] When the coil of the second time relay KT2 is energized, the second time relay KT2 starts timing, and when the timing reaches the second preset time threshold (e.g., 8 seconds), the delayed closing contact of the second time relay KT2 is closed. When the delayed closing contact of the second time relay KT2 is closed, the live wire, the delayed opening contact of the third time relay KT3, the delayed closing contact of the second time relay KT2, the coil of the third intermediate relay KA3, and the coil of the third time relay KT3 form a closed loop, so that the coil of the third intermediate relay KA3 and the coil of the third time relay KT3 are energized.

[0043] When the coil of the third intermediate relay KA3 is energized, the normally closed contact of the third intermediate relay KA3 is disconnected, and the coils of the first intermediate relay KA1 and the second intermediate relay KA2 are both de-energized, thereby stopping the supply of combustible gas and oxygen. At the same time, the live wire, the normally open contact of the third intermediate relay KA3, the ignition module DH01 and the neutral wire form a closed loop, and the ignition module DH01 is energized, thereby igniting the mixed gas composed of combustible gas and oxygen, so that the mixed gas can burn under specific conditions to generate high-temperature and high-pressure gas to form a shock wave, thereby removing the ash accumulation on the boiler heating surface.

[0044] When the coil of the third time relay KT3 is energized, the third time relay KT3 starts timing, and when the timing reaches a third preset time threshold (for example, 3 seconds), the delayed disconnection contact of the third time relay KT3 is disconnected, so that the ignition module DH01 loses power, and the entire process of gas supply and ignition is automatically completed.

[0045] It can be understood that the specific circuit structure of the ignition module DH01 in this article can be determined according to actual conditions, for example, it can be implemented based on an ignition transformer, and this article does not make specific restrictions on this.

[0046] In one embodiment, the normally open contact of the first intermediate relay KA1 is connected in parallel with the start button SB1. After the start button SB1 is pressed, the coil of the first intermediate relay KA1 is energized, and the live wire, the normally closed contact of the third intermediate relay KA3, the normally open contact of the first intermediate relay KA1, the coil of the first intermediate relay KA1 and the neutral wire can form a closed loop. In this case, even if the user releases the start button SB1, the circuit provided in the present application can automatically control the supply of combustible gas, oxygen supply and ignition. In this way, there is no need for the user to long press the start button SB1, which is more convenient to use.

[0047] In one embodiment, the normally open contact of the third intermediate relay KA3 is connected in parallel with the delayed closing contact of the second time relay KT2. In this way, even if the normally closed contact of the third intermediate relay KA3 is disconnected, if the timing of the third time relay KT3 does not reach the third preset time threshold, the live wire, the delayed opening contact of the third time relay KT3, the normally open contact of the third intermediate relay KA3, the coil of the third intermediate relay KA3 and the coil of the third time relay KT3 can form a closed loop, so that the coil of the third intermediate relay KA3 and the coil of the third time relay KT3 remain energized to stably control the oxygen supply and detonate the mixed gas, thereby improving the operation stability.

[0048] In one embodiment, the movable ash removal device includes an ignition gun, a combustible gas inlet 101, a combustible gas outlet 102, and a first pipe 103, wherein the first pipe 103 is used to connect the combustible gas inlet 101 and the combustible gas outlet 102. The combustible gas inlet 101 is used to connect the combustible gas supply pipeline, and the combustible gas outlet 102 is used to connect the ignition gun, so that the combustible gas can enter the ignition gun via the combustible gas supply pipeline and the first pipe 103 in sequence.

[0049] The combustible gas supply module includes a first solenoid valve KS1 and a second solenoid valve KS2. The first solenoid valve KS1 is arranged at one end of the first pipeline 103 close to the combustible gas inlet 101, and the second solenoid valve KS2 is arranged at one end of the first pipeline 103 close to the combustible gas outlet 102. The first solenoid valve KS1 is connected in parallel with the second solenoid valve KS2, that is, the normally open contact of the first intermediate relay KA1 is electrically connected to the first solenoid valve KS1 and the second solenoid valve KS2, respectively, and the neutral line is electrically connected to the first solenoid valve KS1 and the second solenoid valve KS2, respectively.

[0050] In one embodiment, the movable dust removal device includes an ignition gun, an oxygen inlet 104, an oxygen outlet 105, and a second pipe 106, wherein the second pipe 106 is used to connect the oxygen inlet 104 and the oxygen outlet 105. The oxygen inlet 104 is used to connect the oxygen supply pipe, and the oxygen outlet 105 is used to connect the ignition gun, so that oxygen can enter the ignition gun via the oxygen supply pipe and the second pipe 106 in sequence.

[0051] The oxygen supply module includes a third solenoid valve KS3 and a fourth solenoid valve KS4. The third solenoid valve KS3 is arranged at one end of the second pipeline 106 close to the oxygen inlet 104, and the fourth solenoid valve KS4 is arranged at one end of the second pipeline 106 close to the oxygen outlet 105. The third solenoid valve KS3 is connected in parallel with the fourth solenoid valve KS4, that is, the normally open contact of the second intermediate relay KA2 is electrically connected to the third solenoid valve KS3 and the fourth solenoid valve KS4, respectively, and the neutral line is electrically connected to the third solenoid valve KS3 and the fourth solenoid valve KS4, respectively.

[0052] In one embodiment, the movable dust removal device includes an ignition gun, and the ignition module DH01 includes an ignition transformer. The ignition transformer contacts a spark plug of the ignition gun to ignite the mixed gas through the spark plug, thereby forming a shock wave.

[0053] In one embodiment, Figure 1As shown, the control circuit of the movable dust removal equipment also includes an emergency stop button JT, which is electrically connected between the live wire and other circuit elements of the control circuit to realize the emergency stop function. Specifically, the live wire can be electrically connected to the normally open contact of the first intermediate relay KA1, the normally open contact of the second intermediate relay KA2, the normally closed contact of the third intermediate relay KA3, the normally open contact of the third intermediate relay KA3 and the delayed disconnection contact of the third time relay KT3 through the emergency stop button JT. In any program running step, if an abnormal situation occurs, the user can press the emergency stop button JT to terminate the operation of the control circuit.

[0054] In one embodiment, Figure 1 As shown, the control circuit of the movable dust removal equipment may also include an air switch QF1, which is connected between the emergency stop button JT and the live wire to protect the control circuit and reduce the risk of circuit damage.

[0055] In the present application, after the start button SB1 is pressed, the supply of combustible gas can be automatically controlled by the first intermediate relay KA1, and timing is performed by the first time relay KT1. After the combustible gas is supplied for a period of time, the supply of oxygen can be automatically controlled by the first time relay KT1 and the second intermediate relay KA2, and timing is performed by the second time relay KT2. After the oxygen is supplied for a period of time, the supply of combustible gas and oxygen can be automatically disconnected by the third intermediate relay KA3, and the mixed gas can be ignited by the ignition module DH01. In this way, the user only needs to press the start button SB1 to automatically realize gas supply and ignition, thereby reducing the degree of manual participation and improving the degree of automation of boiler ash removal.

[0056] In one embodiment, Figure 2 As shown, the present application also provides a movable dust removal device, including: a box body 200, an ignition gun and a control circuit of the movable dust removal device described in any of the above embodiments.

[0057] The box body 200 has a accommodating cavity, a first button hole, a combustible gas inlet and outlet, and an oxygen inlet and outlet. The control circuit of the movable ash removal equipment is arranged in the accommodating cavity, and the start button extends out of the box from the first button hole.

[0058] The ignition gun is connected to the combustible gas inlet and outlet and the oxygen inlet and outlet respectively, and is used to mix the combustible gas and oxygen under the control of the combustible gas supply module and the oxygen supply module, and ignite the mixed gas composed of combustible gas and oxygen under the triggering of the ignition module.

[0059] It can be understood that the size and shape of the box 200 can be determined according to actual conditions. In one example, the box 200 can be a cubic box 200 with a size of 400 mm×600 mm×250 mm.

[0060] In one example, the combustible gas inlet and outlet may include a combustible gas inlet 101 and a combustible gas gas outlet, the oxygen inlet and outlet may include an oxygen inlet 104 and an oxygen gas outlet, and the ignition module may be connected to the combustible gas gas outlet and the oxygen gas outlet. When the first solenoid valve and the second solenoid valve are energized, the combustible gas may enter the ignition gun. When the third solenoid valve and the fourth solenoid valve are energized, oxygen may enter the ignition gun.

[0061] It is understood that the specific structure of the ignition gun can be determined according to actual conditions. Figure 3 As shown, the ignition gun may include a handle, a gun body and an ignition plug, and the gun body has a corresponding combustible gas inlet 101, an oxygen inlet 104 and a gas outlet. Combustible gas can be supplied through the combustible gas inlet 101 and the gas outlet of the gun body in sequence, and oxygen can be supplied through the oxygen inlet 104 and the gas outlet of the gun body in sequence.

[0062] In one example, the mobile dust removal device may further include a handle 300 .

[0063] In one embodiment, the ignition gun has a gas outlet, the gas outlet is covered with a PE bag, and the PE bag is covered with a soaked cotton bag. In this way, it can be avoided that the cotton bag or PE bag is damaged by the excessive temperature of the tube bundle or smoke in the furnace of the ignition gun, thereby ensuring normal ash removal,

[0064] For example, when using a movable ash removal device, the acetylene outlet pressure can be adjusted to 0.1MPa and the initial oxygen pressure can be adjusted to 0.5MPa. First, insert a 150×1500 (mm) flat PE bag at the outlet of the ignition gun, and tie the opening to the ignition gun barrel with a rope. Put a 150×1500 mm cotton bag soaked in water outside the PE bag, and tie the opening to the ignition gun barrel. After inserting the ignition gun into the place where manual ash removal is required in the flue, press the start button, acetylene and oxygen enter the PE bag through the outlet of the ignition gun for mixing, ignite and explode after 20S, and use the shock wave generated by the explosion to clean the tube bundle of the ignition gun accessories. In this way, on the one hand, the efficiency of ash removal in the flue of the waste heat boiler can be improved, and the ash can be fixed at the flue away from the fixed soot blower or dead corner. On the other hand, it can also better improve the thermal efficiency of the boiler, reduce the boiler exhaust temperature, reduce the corrosion of the boiler heating surface, and extend the service life of the boiler heating surface.

[0065] The movable dust removal equipment of the present application is portable and can be easily moved and operated by a single person. When the boiler is running, auxiliary dust removal can be performed on the horizontal middle part and dead corner of the flue on the basis of the fixed dust removal equipment, and the dust removal position can be flexibly selected.

[0066] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. Herein, "one", "one", "said", "the" and "it" may also include plural forms, unless the context clearly indicates another way. A plurality refers to at least two cases, such as 2, 3, 5 or 8, etc. "And / or" includes any and all combinations of the relevant listed items.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can refer to each other.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control circuit for a movable dust removal device, characterized in that: include: A start button, a first intermediate relay, a second intermediate relay, a third intermediate relay, a first time relay, a second time relay, a third time relay, a combustible gas supply module, an oxygen supply module and an ignition module; The start button is electrically connected to the coil of the first intermediate relay, the normally closed contact of the third intermediate relay and the delayed closing contact of the first time relay, and the delayed closing contact of the first time relay is electrically connected to the coil of the second intermediate relay and the coil of the second time relay; The delayed closing contact of the second time relay is electrically connected to the coil of the third time relay, the delayed opening contact of the third time relay and the coil of the third time relay respectively; the normally open contact of the first intermediate relay is electrically connected to the coil of the first time relay and the combustible gas supply module respectively; the normally open contact of the second intermediate relay is electrically connected to the oxygen supply module; the normally open contact of the third intermediate relay is electrically connected to the ignition module; The normally open contact of the first intermediate relay, the normally open contact of the second intermediate relay, the normally closed contact of the third intermediate relay, the normally open contact of the third intermediate relay and the delayed disconnection contact of the third time relay are all used to electrically connect the live wire; the coil of the first intermediate relay, the coil of the second intermediate relay, the coil of the third intermediate relay, the coil of the first time relay, the coil of the second time relay and the coil of the third time relay, the combustible gas supply module, the oxygen supply module and the ignition module are all used to electrically connect the neutral wire; The combustible gas supply module is used to control the movable ash removal equipment to supply combustible gas when powered; the oxygen supply module is used to control the movable ash removal equipment to supply oxygen when powered; and the ignition module is used to ignite the mixed gas composed of the combustible gas and the oxygen when powered.

2. The control circuit of the movable dust removal equipment according to claim 1, characterized in that: The normally open contact of the first intermediate relay is connected in parallel with the start button.

3. The control circuit of the movable dust removal device according to claim 1, characterized in that: The normally open contact of the third intermediate relay is connected in parallel with the delayed closing contact of the second time relay.

4. The control circuit of the movable dust removal device according to claim 1, characterized in that: The movable ash removal device comprises an ignition gun, a combustible gas inlet, a combustible gas outlet, and a first pipeline for connecting the combustible gas inlet and the combustible gas outlet, wherein the combustible gas inlet is used to connect to a combustible gas supply pipeline, and the combustible gas outlet is used to connect to the ignition gun; The combustible gas supply module comprises a first solenoid valve and a second solenoid valve, wherein the first solenoid valve is arranged at one end of the first pipeline close to the combustible gas inlet, and the second solenoid valve is arranged at one end of the first pipeline close to the combustible gas outlet; The first solenoid valve is electrically connected to the normally open contact of the first intermediate relay and is used to connect the neutral line; the second solenoid valve is electrically connected to the normally open contact of the first intermediate relay and is used to connect the neutral line.

5. The control circuit of the movable dust removal device according to claim 1, characterized in that: The movable ash removal device comprises an ignition gun, an oxygen inlet, an oxygen outlet, and a second pipe for connecting the oxygen inlet and the oxygen outlet, wherein the oxygen inlet is used to connect to the oxygen supply pipe, and the oxygen outlet is used to connect to the ignition gun; The oxygen supply module comprises a third solenoid valve and a fourth solenoid valve, wherein the third solenoid valve is arranged at one end of the second pipeline close to the oxygen inlet, and the fourth solenoid valve is arranged at one end of the second pipeline close to the oxygen outlet; The third solenoid valve is electrically connected to the normally open contact of the second intermediate relay and is used to connect the neutral line; the fourth solenoid valve is electrically connected to the normally open contact of the second intermediate relay and is used to connect the neutral line.

6. The control circuit of the movable dust removal device according to claim 1, characterized in that: The movable ash removal device includes an ignition gun, and the ignition module includes an ignition transformer, which is in contact with a spark plug of the ignition gun.

7. The control circuit of the movable dust removal device according to any one of claims 1 to 6, characterized in that: The control circuit of the movable dust removal equipment also includes an emergency stop button; The normally open contact of the first intermediate relay, the normally open contact of the second intermediate relay, the normally closed contact of the third intermediate relay, the normally open contact of the third intermediate relay and the delayed disconnection contact of the third time relay are all electrically connected to the live wire through the emergency stop button.

8. The control circuit of the movable dust removal device according to claim 7, characterized in that: The control circuit of the movable dust removal equipment also includes an air switch, which is connected between the emergency stop button and the live wire.

9. A movable dust removal device, characterized in that: include: A box, an ignition gun and a control circuit of the movable dust removal device according to any one of claims 1 to 8; The box body has a receiving cavity, a first button hole, a combustible gas inlet and outlet, and an oxygen inlet and outlet. The control circuit of the movable ash removal device is arranged in the receiving cavity, and the start button extends out of the box from the first button hole. The ignition gun is connected to the combustible gas inlet and outlet and the oxygen inlet and outlet respectively, and is used to mix the combustible gas and oxygen under the control of the combustible gas supply module and the oxygen supply module, and ignite the mixed gas composed of the combustible gas and the oxygen under the triggering of the ignition module.

10. The movable dust removal device according to claim 9, characterized in that: The ignition gun is provided with a gas outlet, the gas outlet is covered with a PE bag, and the PE bag is covered with a soaked cotton bag.

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