Dust removal system with explosion-proof configuration

Abstract

The invention relates to a dust removal system with anti-explosion configuration, which belongs to the technical field of dust anti-explosion equipment, and comprises a dust remover, a dust pipeline, a cooling pipeline, a temperature detector and a controller, negative pressure generated by the dust remover sucks dust of the production equipment into the dust remover through the dust pipeline. The two ends of the cooling pipeline are arranged on the dust pipeline in a communicating mode respectively, and an automatic gating valve is arranged at the joint of the cooling pipeline and the dust pipeline. The temperature detector is installed at the end, close to production equipment, of the dust pipeline and used for detecting and obtaining the temperature value of dust in the dust pipeline and sending out a detection signal. The controller is electrically connected with the temperature detector and the automatic gating valve and used for receiving a detection signal sent by the temperature detector and sending a control signal to the automatic gating valve. The high-temperature dust treatment device has the effects of efficiently treating high-temperature dust and reducing the dust explosion risk.

Description

Technical Field

[0001] The present application relates to the technical field of dust explosion-proof equipment, and in particular to a dust removal system with an explosion-proof configuration. Background Art

[0002] Currently, industrial dust removal systems play an important role in handling various types of dust. However, when handling dust (such as aluminum powder, copper powder, starch, etc.), existing dust removal systems usually do not have explosion-proof configuration as a mandatory option, which leads to major safety hazards during the operation of the system. Due to the lack of necessary explosion-proof configuration, existing dust removal systems are prone to explosions when handling explosive dust, seriously endangering the safety of personnel and equipment, and may cause huge economic losses and safety accidents.

[0003] To this end, in order to improve the safety of the dust removal system, the prior art discloses an explosion-proof dust removal system with publication number CN113082911A, and its technical solution includes an air inlet pipe, the air inlet pipe is connected to an inert powder feeding pipe, the inert powder feeding pipe is connected to a spiral powder feeding machine, the air inlet pipe is connected to a dust collector, the dust collector is connected to a fan through a connecting pipeline, the other end of the fan is connected to a return air pipe, the dust collector is connected to a dynamic pressure detector, an explosion suppressor and a flameless explosion vent are also provided on the dust collector, and the explosion suppressor is electrically connected to the dynamic pressure detector.

[0004] The above scheme adopts multiple explosion-proof and explosion-suppression measures to minimize the possibility of explosion. Even if an explosion occurs, it can effectively protect personnel and equipment to avoid huge economic losses and major safety accidents. However, some industries are prone to produce high-temperature dust during industrial production. If the above explosion-proof measures are directly used for high-temperature dust, the explosion-proof effect is limited, and the equipment maintenance cost is high, so it needs to be improved. Summary of the invention

[0005] In order to efficiently handle high-temperature dust and reduce the risk of explosion, the present application provides a dust removal system with an explosion-proof configuration.

[0006] The present application provides an explosion-proof dust removal system that adopts the following technical solution: an explosion-proof dust removal system, comprising: Dust collector, used to handle dust; A dust duct, the dust duct is used to connect the production equipment and the dust collector, and the negative pressure generated by the dust collector sucks the dust of the production equipment into the dust collector through the dust duct; A cooling pipeline, wherein both ends of the cooling pipeline are connected to the dust pipeline respectively, an automatic gate valve is provided at the connection between the cooling pipeline and the dust pipeline, and the length of the cooling pipeline is greater than that of the dust pipeline; A temperature detector is installed at one end of the dust duct close to the production equipment, and is used to detect the temperature of the dust in the dust duct and send a detection signal; and a controller, which is electrically connected to the temperature detector and the automatic gate valve, respectively, and is used to receive a detection signal from the temperature detector and send a control signal to the automatic gate valve; When the detection value of the temperature detector is greater than a preset value, the controller controls the automatic gate valve to gate open the cooling duct to cool the high-temperature dust before it enters the dust collector.

[0007] By adopting the above technical solution, the dust generated during the production process of the production equipment is sucked into the dust collector through the dust duct for dust removal under the action of the negative pressure of the dust collector. When the temperature detector detects that the temperature of the dust entering the dust duct of the production equipment is higher than the preset value, the control signal is sent to the controller. The controller responds to the detection signal of the temperature detector and controls the automatic selection valve to open the cooling duct, so that the high-temperature dust enters the cooling duct, and then enters the dust duct after cooling through the cooling duct, and then is sucked into the dust collector, thereby effectively reducing the dust temperature and preventing high-temperature dust from directly entering the dust collector, increasing the risk of explosion of dust in the dust collector.

[0008] Preferably, the cooling pipe includes two connecting pipes and a serpentine pipe, the serpentine pipe is connected and arranged between the two connecting pipes, and both ends of the two connecting pipes are connected and arranged on the dust pipe respectively.

[0009] By adopting the above technical solution, the cooling pipeline with serpentine tube distribution can increase the length of the cooling pipeline while reducing the volume occupied, thereby improving the cooling effect of the cooling pipeline.

[0010] Preferably, each section of the serpentine pipe is arranged to be inclined downward.

[0011] By adopting the above technical solution, the serpentine pipe arranged obliquely downward can reduce the deposition of dust in the pipe, thereby avoiding high-temperature accumulation of dust and reducing the risk of explosion in the cooling pipe.

[0012] Preferably, an auxiliary cooling device is also included, which includes a high-pressure carbon dioxide injector and a mixing cylinder, the injection nozzle of the high-pressure carbon dioxide injector is connected to the mixing cylinder, and the mixing cylinder is connected and arranged on the cooling pipeline.

[0013] By adopting the above technical solution, the carbon dioxide injected by the high-pressure carbon dioxide injector enters the mixing barrel and mixes with the dust in the mixing barrel. Since the carbon dioxide gasifies and absorbs heat, the temperature of the dust in the mixing barrel is reduced. At the same time, the initially cooled dust enters the serpentine tube for further cooling. At the same time, since the carbon dioxide gas reduces the concentration of oxygen in the cooling pipe and the dust collector, the explosion of dust is further suppressed, thereby reducing the risk of dust explosion.

[0014] Preferably, the mixing cylinder comprises an outer cylinder and an inner cylinder, the inner cylinder fixing sleeve is arranged in the outer cylinder, the inner diameter of the outer cylinder is larger than the inner diameter of the inner cylinder, the injection nozzle of the high-pressure carbon dioxide injector is connected to one end of the outer cylinder, a first air inlet hole is arranged at one end of the inner cylinder, the connecting pipe is connected to the side wall of the inner cylinder close to the air inlet hole, the other end of the inner cylinder is connected to the serpentine tube, and a plurality of second air inlet holes are opened along the circumferential direction on the side wall of the inner cylinder close to one end of the serpentine tube.

[0015] By adopting the above technical scheme, due to the large negative pressure generated by the dust collector, the dust flows faster in the cooling pipe and the mixing barrel, which easily leads to part of the dust in the mixing barrel not being fully in contact with the carbon dioxide for cooling and directly entering the serpentine tube. Therefore, the mixing barrel is arranged into an outer barrel and an inner barrel, and a first air inlet channel is formed between one end of the inner barrel and the injection nozzle of the high-pressure carbon dioxide injector connected to the outer barrel through the first air inlet hole. The carbon dioxide gas enters the mixing barrel through the first air inlet channel and mixes with the dust that begins to enter the mixing barrel for preliminary cooling. Then the dust moves in the mixing barrel toward one end of the serpentine tube. Since a second air inlet hole is provided on the side wall of the inner barrel near one end of the serpentine tube, a second air inlet channel is formed by the inner barrel and the outer barrel between the second air inlet hole and the injection nozzle of the high-pressure carbon dioxide injector, so that the carbon dioxide gas enters the other end of the mixing barrel through the second air inlet channel, and is further mixed with the dust for cooling, thereby fully cooling the dust and further reducing the risk of dust explosion.

[0016] Preferably, a baffle is provided between the injection nozzle of the high-pressure carbon dioxide injector and the first air inlet hole, and the baffle is fixedly connected to the inner cylinder via a connecting rod.

[0017] By adopting the above technical solution, the carbon dioxide gas entering the outer cylinder is diverted by the baffle plate arranged between the injection nozzle and the first air inlet hole, and enters the mixing cylinder through the first air inlet hole and the second air inlet hole respectively.

[0018] Preferably, the pipe opening at the connection between the serpentine pipe and the inner tube is arranged in a bell-mouth shape.

[0019] By adopting the above technical solution, the pipe opening at the connection between the serpentine tube and the inner tube is set to a trumpet shape, so that the dust in the mixing tube can be guided into the serpentine tube, reducing the accumulation of wind dust in the mixing tube.

[0020] Preferably, a dust concentration detector is also included, and the dust concentration detector is arranged on the dust duct close to the production equipment. The dust concentration detector is used to detect the dust concentration in the dust duct and send a detection signal at the same time. A flow regulating valve is arranged on the pipeline of the high-pressure carbon dioxide injector. The controller is electrically connected to the dust concentration detector and the flow regulating valve, respectively, and is used to receive the detection signal sent by the dust concentration detector and send a control signal to the flow regulating valve to control the flow size of the high-pressure carbon dioxide injector.

[0021] By adopting the above technical solution, the dust concentration detector can detect the dust concentration in the dust pipe and send a detection signal. The controller controls the carbon dioxide flow rate of the flow regulating valve according to the detection signal, thereby adapting to the processing of high-temperature dust and processing high-temperature dust efficiently and quickly.

[0022] Preferably, an inert dust delivery mechanism is further included, and the inert dust delivery mechanism includes a spiral powder delivery machine and a powder delivery pipe, and the spiral powder delivery machine is connected to the dust pipeline through the powder delivery pipe.

[0023] By adopting the above technical solution, the inert dust is delivered into the dust duct through the spiral powder feeder and the air supply pipe for mixing, and then enters the dust collector, thereby achieving the effect of suppressing dust explosion.

[0024] Preferably, a dust concentration detector is also included, which is arranged on the dust duct close to the production equipment, and is used to detect the dust concentration in the dust duct and send a detection signal at the same time. The controller is electrically connected to the dust concentration detector and the spiral powder feeder, respectively, and is used to receive the detection signal sent by the dust concentration detector and send a control signal to the spiral powder feeder to control the powder feeding speed of the spiral powder feeder.

[0025] By adopting the above technical solution, the dust concentration detector can detect the dust concentration in the dust duct and send a detection signal. The controller controls the rotation speed of the spiral powder feeder according to the detection signal, thereby controlling the input amount of inert dust within a suitable range, thereby reducing the risk of dust explosion.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The dust generated during the production process of the production equipment is sucked into the dust collector through the dust pipe for dust removal under the action of the negative pressure of the dust collector. When the temperature detector detects that the temperature of the dust entering the dust pipe of the production equipment is higher than the preset value, it sends a control signal to the controller. The controller responds to the detection signal of the temperature detector and controls the automatic gate valve to open the cooling pipe, so that the high-temperature dust enters the cooling pipe, and then enters the dust pipe after cooling through the cooling pipe, and then is sucked into the dust collector, thereby reducing the dust temperature, preventing high-temperature dust from entering the dust collector, and increasing the explosion coefficient of the dust in the dust collector; 2. The carbon dioxide injected by the high-pressure carbon dioxide injector enters the mixing barrel and mixes with the dust in the mixing barrel. Since carbon dioxide gasifies and absorbs heat, the temperature of the dust in the mixing barrel is reduced. At the same time, the initially cooled dust enters the serpentine tube for further cooling. At the same time, since the carbon dioxide gas reduces the oxygen concentration in the cooling pipe and the dust collector, the explosion of dust is further suppressed, thereby reducing the risk of dust explosion; 3. Since the negative pressure generated by the dust collector is relatively large, the dust flows faster in the cooling pipe and the mixing barrel, which may easily cause part of the dust in the mixing barrel to directly enter the serpentine tube without sufficient contact with the carbon dioxide for cooling. Therefore, the mixing barrel is arranged into an outer barrel and an inner barrel, and a first air inlet channel is formed between one end of the inner barrel and the injection nozzle of the high-pressure carbon dioxide injector connected to the outer barrel through the first air inlet hole. The carbon dioxide gas enters the mixing barrel through the first air inlet channel and performs preliminary cooling on the dust that begins to enter the mixing barrel. Then the dust moves in the mixing barrel toward one end of the serpentine tube. Since a second air inlet hole is provided on the side wall of the inner barrel near one end of the serpentine tube, a second air inlet channel is formed between the second air inlet hole and the injection nozzle of the high-pressure carbon dioxide injector, so that the carbon dioxide gas enters the other end of the mixing barrel through the second air inlet channel, and is further mixed with the dust for cooling, thereby fully cooling the dust and further reducing the risk of dust explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the dust removal system in the embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the installation structure of the auxiliary cooling device and the cooling pipe in the cabinet of the embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram of the inert dust delivery mechanism and the dust collector in the embodiment of the present application.

[0030] Explanation of the accompanying drawings: 1. Dust collector; 11. Controller; 2. Dust duct; 21. Temperature detector; 22. Automatic selection valve; 23. Dust concentration detector; 3. Production equipment; 4. Cooling duct; 41. Connecting pipe; 42. Serpentine pipe; 5. Cabinet; 6. High-pressure carbon dioxide injector; 61. Flow regulating valve; 7. Mixing cylinder; 71. Outer cylinder; 72. Inner cylinder; 721. First air inlet; 722. Second air inlet; 73. Baffle; 74. Connecting rod; 8. Spiral powder feeder; 9. Powder delivery pipe. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The present application embodiment discloses a dust removal system with an explosion-proof configuration. Figure 1 The dust removal system includes a dust collector 1, which is connected to the production equipment 3 through a dust pipe 2. The dust collector 1 uses the negative pressure generated by the fan inside to suck the dust from the production equipment 3 into the dust pipe 2 and then into the dust collector 1 for dust treatment. Since the internal structure of the dust collector 1 and the multiple explosion-proof measures configured on the dust collector 1 are existing technologies, they will not be described in detail here.

[0033] The present application is aimed at efficiently cooling high-temperature dust before entering the dust collector 1 to reduce the explosion risk of dust in the dust collector 1. The dust removal system also includes a cooling pipe 4, a temperature detector 21, and a controller 11. The two ends of the cooling pipe 4 are respectively connected to the dust pipe 2. The connection between the cooling pipe 4 and the dust pipe 2 is provided with an automatic gate valve 22. The length of the cooling pipe 4 is greater than the length of the dust pipe 2 between the two ends of the cooling pipe 4. The temperature detector 21 is installed at one end of the dust pipe 2 close to the production equipment 3, and is used to detect and obtain the temperature value of the dust in the dust pipe 2 and send a detection signal. The controller 11 is electrically connected to the temperature detector 21 and the automatic gate valve 22, respectively, and is used to receive the detection signal sent by the temperature detector 21 and send a control signal to the automatic gate valve 22; when the detection value of the temperature detector 21 is greater than the preset value, the controller 11 controls the automatic gate valve 22 to gate and open the cooling pipe 4, so as to cool the high-temperature dust before entering the dust collector 1. The controller 11 in the present application is a PLC electric control cabinet.

[0034] Reference Figure 2The cooling pipe 4 includes two connecting pipes 41 and a serpentine pipe 42. The serpentine pipe 42 is connected between the two connecting pipes 41. Both ends of the two connecting pipes 41 are connected to the dust pipe 2. The cooling pipe 4 in which the serpentine pipes 42 are distributed can increase the length of the cooling pipe 4 while reducing the volume occupied, thereby improving the cooling effect of the cooling pipe 4. It also includes a cabinet 5, and the serpentine pipe 42 is fixedly installed in the cabinet 5 to improve the stability of the serpentine pipe 42. In order to reduce dust accumulation, each section of the serpentine pipe 42 is tilted downward.

[0035] In order to efficiently and quickly cool the high-temperature dust, the present application also includes an auxiliary cooling device, which includes a high-pressure carbon dioxide injector 6 and a mixing barrel 7. The injection nozzle of the high-pressure carbon dioxide injector 6 is connected to the mixing barrel 7, and the mixing barrel 7 is connected and arranged on the cooling pipe 4. The carbon dioxide of the high-pressure carbon dioxide injector 6 in this embodiment is stored in a high-pressure gas cylinder. The carbon dioxide injected by the high-pressure carbon dioxide injector 6 enters the mixing barrel 7 and mixes with the dust entering the mixing barrel 7. Since the carbon dioxide gasifies and absorbs heat, the temperature of the dust in the mixing barrel 7 is reduced. At the same time, the initially cooled dust enters the serpentine tube 42 for further cooling. At the same time, since the carbon dioxide gas reduces the concentration of oxygen in the cooling pipe 4 and the dust collector 1, the explosion of dust is further suppressed, thereby reducing the risk of dust explosion.

[0036] Furthermore, the mixing cylinder 7 includes an outer cylinder 71 and an inner cylinder 72, the inner cylinder 72 is fixedly sleeved in the outer cylinder 71, the inner diameter of the outer cylinder 71 is larger than the inner diameter of the inner cylinder 72, the injection nozzle of the high-pressure carbon dioxide injector 6 is connected to one end of the outer cylinder 71, a first air inlet hole 721 is provided at one end of the inner cylinder 72, the connecting pipe 41 is connected to the side wall of the inner cylinder 72 close to the air inlet hole, the other end of the inner cylinder 72 is connected to the serpentine tube 42, and a plurality of second air inlet holes 722 are provided on the side wall of the inner cylinder 72 close to one end of the serpentine tube 42 along the circumferential direction. Since the negative pressure generated by the dust collector 1 is relatively large, the dust flows faster in the cooling pipe 4 and the mixing barrel 7, which easily causes part of the dust in the mixing barrel 7 to directly enter the serpentine tube 42 without sufficient contact with the carbon dioxide for cooling. Therefore, the mixing barrel 7 is configured to be an outer barrel 71 and an inner barrel 72, and a first air intake channel is formed between one end of the inner barrel 72 and the injection nozzle of the high-pressure carbon dioxide injector 6 connected to the outer barrel 71 through the first air intake hole 721. The carbon dioxide gas enters the mixing barrel 7 through the first air intake channel and initially cools the dust that begins to enter the mixing barrel 7. Then the dust moves in the mixing barrel 7 toward one end of the serpentine tube 42. Since a second air intake hole 722 is provided on the side wall of the inner barrel 72 near one end of the serpentine tube 42, a second air intake channel is formed between the second air intake hole 722 and the injection nozzle of the high-pressure carbon dioxide injector 6, so that the carbon dioxide gas enters the other end of the mixing barrel 7 through the second air intake channel, and is further mixed with the dust for cooling, thereby fully cooling the dust and further reducing the risk of dust explosion.

[0037] A disc-shaped baffle 73 is provided between the injection nozzle of the high-pressure carbon dioxide injector 6 and the first air inlet hole 721, and the baffle 73 is fixedly connected to the inner cylinder 72 through a plurality of connecting rods 74. The diameter of the baffle 73 is smaller than the inner diameter of the outer cylinder 71. The baffle 73 provided between the injection nozzle and the first air inlet hole 721 diverts the carbon dioxide gas entering the outer cylinder 71 and enters the mixing cylinder 7 through the first air inlet channel and the second air inlet channel respectively.

[0038] The pipe opening at the connection between the serpentine pipe 42 and the inner cylinder 72 is arranged in a trumpet shape, so that the dust in the mixing cylinder 7 can be guided into the serpentine pipe 42, and the accumulation of dust in the mixing cylinder 7 can be reduced.

[0039] Reference Figure 1 and Figure 2, further comprising a dust concentration detector 23, which is arranged on the dust pipe 2 near the production equipment 3, and is used to detect the dust concentration in the dust pipe 2 and send a detection signal at the same time, and a flow regulating valve 61 is arranged on the pipeline of the high-pressure carbon dioxide injector 6, and the controller 11 is electrically connected to the dust concentration detector 23 and the flow regulating valve 61 respectively, and is used to receive the detection signal sent by the dust concentration detector 23 and send a control signal to the flow regulating valve 61 to control the flow size of the high-pressure carbon dioxide injector 6. The dust concentration detector 23 can detect the dust concentration in the dust pipe 2 and send a detection signal, and the controller 11 controls the opening size of the flow regulating valve 61 according to the detection signal, thereby controlling the size of the carbon dioxide flow of the high-pressure carbon dioxide injector 6, so as to adapt to the treatment of high-temperature dust and treat the high-temperature dust quickly and at the same time to the greatest extent.

[0040] Reference Figure 1 and Figure 3 , and also includes an inert dust delivery mechanism, which includes a spiral powder feeder 8 and a powder delivery pipe 9, and the spiral powder feeder is connected to the dust pipe 2 through the powder delivery pipe 9. The inert dust is delivered into the dust pipe 2 through the spiral powder feeder 8 and the air supply pipe for mixing, and then enters the dust collector 1, thereby achieving the effect of suppressing dust explosion.

[0041] The controller 11 is electrically connected to the spiral powder feeder 8, and is used to receive the detection signal sent by the dust concentration detector 23 and send a control signal to the spiral powder feeder 8 to control the powder feeding speed of the spiral powder feeder 8. The dust concentration detector 23 can detect the dust concentration in the dust duct 2 and send a detection signal. The controller 11 controls the rotation speed of the spiral powder feeder 8 according to the detection signal, thereby controlling the input amount of inert dust within a suitable range, thereby reducing the risk of dust explosion.

[0042] The implementation principle of the dust removal system with explosion-proof configuration in the embodiment of the present application is as follows: before the dust generated during the production process of the production equipment 3 is sucked into the dust collector 1 through the dust duct 2 under the action of the negative pressure of the dust collector 1, if the temperature detector 21 detects that the temperature of the dust entering the dust duct 2 of the production equipment 3 is higher than the preset value, a control signal is sent to the controller 11. The controller 11 responds to the detection signal of the temperature detector 21 and controls the automatic gate valve 22 to gate and open the cooling duct, so that the high-temperature dust enters the cooling duct 4, and the carbon dioxide injected by the high-pressure carbon dioxide injector 6 enters the mixing barrel 7 and mixes with the dust entering the mixing barrel 7. Since the carbon dioxide gasifies and absorbs heat, the temperature of the dust in the mixing barrel 7 is reduced. At the same time, the dust that has been initially cooled enters the serpentine pipe 42 for further cooling, thereby effectively reducing the temperature of the high-temperature dust; at the same time, since the carbon dioxide gas reduces the concentration of oxygen in the cooling duct 4 and the dust collector 1, the explosion of the dust is further suppressed, and the explosion-proof measures configured on the dust collector 1 are combined to reduce the risk of dust explosion to a minimum.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An explosion-proof dust removal system, characterized in that: include: A dust collector (1) for treating dust; A dust duct (2), the dust duct (2) being used to connect the production equipment (3) and the dust collector (1), the negative pressure generated by the dust collector (1) sucking the dust of the production equipment (3) into the dust collector (1) through the dust duct (2); A cooling pipe (4), wherein both ends of the cooling pipe (4) are respectively connected to the dust pipe (2), an automatic selection valve (22) is provided at the connection between the cooling pipe (4) and the dust pipe (2), and the length of the cooling pipe (4) is greater than that of the dust pipe (2); A temperature detector (21), installed at one end of the dust duct (2) close to the production equipment (3), for detecting the temperature value of the dust in the dust duct (2) and sending a detection signal; and a controller (11), which is electrically connected to the temperature detector (21) and the automatic selector valve (22), respectively, and is used to receive a detection signal sent by the temperature detector (21) and send a control signal to the automatic selector valve (22); When the detection value of the temperature detector (21) is greater than a preset value, the controller (11) controls the automatic selection valve (22) to select and open the cooling pipe (4) to cool the high-temperature dust before it enters the dust collector (1).

2. The dust removal system with explosion-proof configuration according to claim 1, characterized in that: The cooling pipe (4) comprises two connecting pipes (41) and a serpentine pipe (42); the serpentine pipe (42) is connected between the two connecting pipes (41); and both ends of the two connecting pipes (41) are connected to the dust pipe (2).

3. The explosion-proof dust removal system according to claim 2, characterized in that: Each section of the serpentine pipe (42) is arranged to be inclined downward.

4. The explosion-proof dust removal system according to claim 2, characterized in that: The invention also comprises an auxiliary cooling device, which comprises a high-pressure carbon dioxide injector (6) and a mixing cylinder (7), wherein the injection nozzle of the high-pressure carbon dioxide injector (6) is connected to the mixing cylinder (7), and the mixing cylinder (7) is connected and arranged on the cooling pipe (4).

5. The dust removal system with explosion-proof configuration according to claim 4, characterized in that: The mixing cylinder (7) comprises an outer cylinder (71) and an inner cylinder (72); the inner cylinder (72) is fixedly sleeved and arranged inside the outer cylinder (71); the inner diameter of the outer cylinder (71) is larger than the inner diameter of the inner cylinder (72); the injection nozzle of the high-pressure carbon dioxide injector (6) is connected to one end of the outer cylinder (71); one end of the inner cylinder (72) is provided with a first air inlet hole (721); the connecting pipe (41) is connected to the side wall of the inner cylinder (72) close to the air inlet hole; the other end of the inner cylinder (72) is communicated with the serpentine tube (42); and the side wall of the inner cylinder (72) close to one end of the serpentine tube (42) is provided with a plurality of second air inlet holes (722) along the circumferential direction.

6. The dust removal system with explosion-proof configuration according to claim 5, characterized in that: A baffle (73) is provided between the injection pipe opening of the high-pressure carbon dioxide injector (6) and the first air inlet hole (721), and the baffle (73) is fixedly connected to the inner cylinder (72) via a connecting rod (74).

7. The dust removal system with explosion-proof configuration according to claim 5, characterized in that: The pipe opening at the connection between the serpentine pipe (42) and the inner tube (72) is arranged in a bell-mouth shape.

8. The explosion-proof dust removal system according to claim 4, characterized in that: The invention also comprises a dust concentration detector (23), which is arranged on the dust duct (2) close to the production equipment (3), and is used to detect the dust concentration in the dust duct (2) and send out a detection signal at the same time. A flow regulating valve (61) is arranged on the pipeline of the high-pressure carbon dioxide injector (6), and the controller (11) is electrically connected to the dust concentration detector (23) and the flow regulating valve (61) respectively, and is used to receive the detection signal sent by the dust concentration detector (23) and send a control signal to the flow regulating valve (61) to control the flow rate of the high-pressure carbon dioxide injector (6).

9. The dust removal system with explosion-proof configuration according to claim 1, characterized in that: It also includes an inert dust delivery mechanism, which includes a spiral powder delivery machine (8) and a powder delivery pipe (9), and the spiral powder delivery machine (8) is connected to the dust pipeline (2) through the powder delivery pipe (9).

10. The explosion-proof dust removal system according to claim 9, characterized in that: The invention also comprises a dust concentration detector (23), which is arranged on the dust duct (2) near the production equipment (3), and is used to detect the dust concentration in the dust duct (2) and send out a detection signal at the same time. The controller (11) is electrically connected to the dust concentration detector (23) and the spiral powder feeder (8) respectively, and is used to receive the detection signal sent by the dust concentration detector (23) and send a control signal to the spiral powder feeder (8) to control the powder feeding speed of the spiral powder feeder (8).

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