Protection equipment for silencer of dust removal fan

Abstract

The protection equipment comprises a hush pipe, a pore plate and a filling layer are fixedly installed in the hush pipe, a protection mechanism is fixedly installed on the hush pipe, and the protection mechanism comprises a fixed sleeve, a rotating sleeve, a box body and a sealing door; according to the invention, data of internal interference factors and external interference factors in the use period of the protection equipment are collected, corresponding control signals are obtained, the operation process of the hush pipe is comprehensively and efficiently supervised in the use process, corresponding early warning is sent to the supervising end, accurate judgment and control of the use condition of the hush pipe are realized, and the use safety of the hush pipe is improved. Meanwhile, through cooperative use of a sealing door and a gas collecting hood, rapid cleaning of a filling layer in the silencer is achieved, the working continuity is more effectively improved, and through cooperative use of a fixed sleeve and a rotating sleeve and circular flowing of magnetic fluid, the silencer is protected while the noise reduction capacity of the silencing pipe is effectively improved.

Description

Technical Field

[0001] The invention relates to the field of dust removal fans, and in particular to a protective device for a muffler of a dust removal fan. Background Art

[0002] Dust removal fans are usually used in industrial production environments to absorb, collect or filter particulate matter and dust in the air to maintain air quality and a clean working environment. However, these fans often generate high noise during operation, which can have adverse effects on the health of workers and the comfort of the production environment. At this time, it is often necessary to install a muffler on the air inlet or outlet pipe of the dust removal fan to reduce the noise generated by the dust removal fan.

[0003] However, during the use of the dust removal fan muffler in the prior art, since the gas sucked in and discharged by the dust removal fan contains dust, in daily use, the filling material in the muffler is easily blocked by dust. At this time, it is necessary to stop the machine and disassemble the muffler to clean its interior, which undoubtedly affects the continuity of work. At the same time, repeated disassembly is likely to affect the tightness of the filling layer inside the muffler, thereby causing damage to the muffler, and it is difficult to quickly clean the filling layer inside the muffler.

[0004] Moreover, when the amount of gas processed is large or the gas pressure is high, the muffler filling layer tends to absorb more sound energy and heat energy during operation, which in turn causes the temperature of the muffler filling layer to gradually increase. Since the existing muffler lacks a protective structure, it is very easy to be damaged when exposed to high temperature for a long time, resulting in increased processing costs.

[0005] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0006] The object of the present invention is to provide a protection device for a dust removal fan muffler to solve the technical defects proposed by the background technology.

[0007] The object of the present invention can be achieved by the following technical scheme: a protection device for a dust removal fan muffler, comprising a muffler pipe, a perforated plate and a filling layer are fixedly installed inside the muffler pipe, a protection mechanism is fixedly installed on the muffler pipe, the protection mechanism comprises a fixed sleeve, a rotating sleeve, a box body and a closed door, the box body is located below the muffler pipe, and a control panel is fixedly installed on the box body;

[0008] The filling layer is located between the fixed sleeve and the orifice plate, the rotating sleeve is movably connected to the fixed sleeve, and dust discharge grooves are provided on the rotating sleeve and the fixed sleeve. The closed doors are fixedly installed at both ends of the muffler pipe, and an air collecting hood and an air inlet pipe are fixedly installed at the bottom of the muffler pipe, and the air inlet pipe is located on one side of the air collecting hood;

[0009] A plurality of electromagnets are fixedly installed on the inner wall of the silencer pipe, a cavity one is opened in the fixed sleeve, a cavity two is opened in the rotating sleeve, magnetic fluid is filled in cavity one and cavity two, cavity one and cavity two are connected by a pipeline, and cavity two is fixedly connected to the water pump inside the box through the pipeline.

[0010] Preferably, the closed door consists of a fixed plate and a rotating plate, the fixed plate is fixedly connected to the silencer pipe, the rotating plate is movably connected to the fixed plate, a plurality of movable blocks are movably installed between the rotating plate and the fixed plate, and circular through grooves are provided at the centers of the rotating plate and the fixed plate.

[0011] Preferably, a motor is fixedly mounted on the muffler pipe, a rotating rod is fixedly mounted on the output end of the motor, and gear 1 and gear 2 are fixedly mounted on the rotating rod;

[0012] A plurality of tooth blocks 1 are fixedly mounted on the outer circumference of the rotating plate, and the tooth blocks 1 are meshed and connected with the gear 1. A connecting block is fixedly mounted on the outer wall of the rotating sleeve, and a tooth block 2 is fixedly mounted on the connecting block, and the gear 2 is meshed and connected with the tooth block 2.

[0013] Preferably, a connecting pipe is movably connected to the side of the rotating plate away from the fixed plate, a slider is fixedly installed on the inner circumference of the rotating plate, a sliding groove is opened on the outer surface of the connecting pipe, the slider is movably installed in the sliding groove, and a connecting flange is fixedly installed on the side of the connecting pipe away from the silencer pipe.

[0014] Preferably, the control panel includes a comprehensive data acquisition unit, a work evaluation unit, a risk evaluation unit and a control unit;

[0015] The comprehensive data acquisition unit is used to collect the internal interference factor data and external interference factor data of the protection equipment, the internal interference factor data includes the operation evaluation value and the noise reduction effect value, and the external interference factor data includes the wind pressure intensity distribution value, and sends the internal interference factor data to the work evaluation unit, and sends the external interference factor data to the control unit;

[0016] After receiving the internal interference factor data, the work evaluation unit performs work evaluation on the data, generates a risk signal according to the evaluation result, and sends the obtained risk signal to the risk evaluation unit via a communication connection;

[0017] The risk assessment unit performs risk assessment after receiving the data from the work assessment unit, generates an abnormal signal according to the assessment result, and controls the component to make corresponding action instructions;

[0018] After receiving the external interference factor data, the control unit performs a work evaluation on the data, generates a control signal according to the evaluation result, and controls the component to make corresponding action instructions according to the control signal.

[0019] Preferably, the analysis process of the protection device by the working evaluation unit is as follows:

[0020] Obtaining an operation evaluation value of the protection device in each sub-time period, the operation evaluation value represents the portion of the product value obtained after normalization of the operation parameters in the sub-time period that exceeds the stored preset threshold, and the operation parameters represent the stability value;

[0021] The silencing effect value of the protection device in each sub-time period is obtained. The silencing effect value indicates the number of times that the value corresponding to the characteristic data of the protection device in the sub-time period exceeds the preset threshold. The characteristic data indicates the environmental leakage value and decibel change value of the protection device in the sub-time period.

[0022] Preferably, the risk assessment unit analyzes the protective equipment as follows:

[0023] After obtaining the operation evaluation value and the silencing effect value of the protection equipment in each sub-time period, the product value obtained after data normalization of the operation evaluation value and the silencing effect value is marked as the dynamic risk assessment coefficient, and then the dynamic risk assessment coefficient Pi of the equipment in each sub-time period is obtained. A rectangular coordinate system is established with the number of sub-times as the X-axis and the dynamic risk assessment coefficient Pi as the Y-axis, and a dynamic risk assessment coefficient curve is drawn by plotting points;

[0024] At the same time, a preset dynamic risk assessment coefficient threshold curve is drawn in the coordinate system, and the risk angle range value and risk difference value are obtained. The risk angle range value and risk difference value are compared and analyzed with the preset risk angle range value and preset risk difference value entered and stored internally, and an abnormal signal is generated.

[0025] The beneficial effects of the present invention are as follows:

[0026] (1) The present invention uses a closed door and an air collecting hood in combination. In actual use, when the filling layer inside the muffler needs to be cleaned, the closed door is started to close both ends of the muffler. While the closed door is closed, the rotating sleeve rotates synchronously so that the dust discharge grooves on the rotating sleeve and the fixed sleeve overlap. At this time, high-pressure gas is transported to the inside of the muffler through the air inlet pipe. After passing through the orifice plate, the high-pressure airflow contacts the filling layer. The impurities in the filling layer are driven by the high-pressure airflow to be discharged from the dust discharge groove, and the impurities are collected and discharged through the bottom air collecting hood. In this way, the filling layer is cleaned without disassembly. At the same time, the cleaning time is short, and the impact on the work continuity is small, thereby realizing the rapid cleaning of the filling layer inside the muffler;

[0027] (2) The present invention also uses a fixed sleeve and a rotating sleeve in coordination. In the initial state, the ash discharge grooves on the fixed sleeve and the rotating sleeve are staggered. At this time, the ash discharge grooves are in a closed state. During the use of the muffler, under the driving action of the water pump, the magnetic fluid circulates in the cavity one, the cavity two and the box body, thereby taking away the heat of the filling layer and avoiding the high temperature inside the muffler, thereby protecting the muffler;

[0028] (3) The present invention also acquires corresponding control signals by collecting data on internal and external interference factors during the use of the protection device, and performs comprehensive and efficient supervision on the operation process of the protection device during use, that is, comprehensively analyzing and comparing the collected data range with the preset data range, thereby obtaining relevant evaluation signals, and accordingly issuing corresponding warnings to the supervision end, while controlling the components to make compensatory actions, thereby realizing adaptive adjustment of the protection device and accurate judgment and control of the usage conditions, with a high degree of intelligence, and effectively improving the silencing ability of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings;

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the muffler pipe in the present invention;

[0032] Figure 3 It is a structural schematic diagram of the protection mechanism in the present invention;

[0033] Figure 4 It is a structural schematic diagram of the closed door in the present invention;

[0034] Figure 5 It is a structural schematic diagram of the connecting pipe in the present invention;

[0035] Figure 6 is a system block diagram of the present invention;

[0036] Figure 7 It is a structural schematic diagram of the filling layer in the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of cavity one and cavity two in the present invention.

[0038] Legend: 1. Silencer; 101. Orifice plate; 102. Filling layer; 103. Air hood; 104. Air inlet pipe; 2. Protection mechanism; 201. Fixed sleeve; 202. Rotating sleeve; 203. Box; 204. Closing door; 205. Ash discharge chute; 206. Cavity one; 207. Cavity two; 208. Fixed plate; 209. Rotating plate; 210. Moving block; 211. Rotating rod; 212. Gear one; 213. Gear two; 214. Gear block one; 215. Connecting block; 216. Gear block two; 217. Connecting pipe; 218. Slider; 219. Slide groove; 3. Control panel. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1: This embodiment is used to solve the problem that the filling material in the muffler is easily clogged by dust. At this time, the machine needs to be stopped and the muffler needs to be disassembled to clean its interior, which undoubtedly affects the continuity of work. At the same time, repeated disassembly can easily affect the tightness of the filling layer inside the muffler, thereby causing damage to the muffler, making it difficult to quickly clean the filling layer inside the muffler.

[0041] See also Figure 1 - Figure 6 As shown, this embodiment is a protection device for a dust removal fan muffler, comprising a muffler pipe 1, a perforated plate 101 and a filling layer 102 are fixedly installed inside the muffler pipe 1, a protection mechanism 2 is fixedly installed on the muffler pipe 1, and the protection mechanism 2 comprises a fixed sleeve 201, a rotating sleeve 202, a box 203 and a closed door 204, the box 203 is located below the muffler pipe 1, and a control panel 3 is fixedly installed on the box 203;

[0042] The closed door 204 is composed of a fixed plate 208 and a rotating plate 209. The side of the rotating plate 209 away from the fixed plate 208 is movably connected with a connecting pipe 217. A slider 218 is fixedly installed on the inner circumference of the rotating plate 209. A slide groove 219 is provided on the outer surface of the connecting pipe 217. The slider 218 is movably installed in the slide groove 219. A connecting flange is fixedly installed at one end of the connecting pipe 217 away from the rotating plate 209 for pipeline connection.

[0043] The fixed plate 208 is fixedly connected to the silencer pipe 1, the rotating plate 209 is movably connected to the fixed plate 208, and a plurality of moving blocks 210 are movably installed between the rotating plate 209 and the fixed plate 208. Circular through grooves are provided at the centers of the rotating plate 209 and the fixed plate 208, wherein the fixed plate 208, the moving blocks 210 and the rotating plate 209 form a shutter structure, and different moving grooves are provided on the rotating plate 209 and the fixed plate 208. While the rotating plate 209 rotates, the moving blocks 210 gradually move, and after being in place, the moving blocks 210 close the through grooves.

[0044] A motor is fixedly installed on the silencer 1, and a rotating rod 211 is fixedly installed on the output end of the motor. Gear 1 212 and gear 2 213 are fixedly installed on the rotating rod 211. A plurality of tooth blocks 1 214 are fixedly installed on the outer circumference of the rotating plate 209, and tooth block 1 214 is meshingly connected with gear 1 212. A connecting block 215 is fixedly installed on the outer wall of the rotating sleeve 202, and tooth block 216 is fixedly installed on the connecting block 215, and gear 2 213 is meshingly connected with tooth block 216. When it is necessary to close the closed door 204, the motor is started to drive the rotating rod 211 to rotate, thereby driving gear 1 212 and gear 2 213 to rotate synchronously. Under the action of tooth block 1 214 and tooth block 216, the rotating plate 209 and the rotating sleeve 202 rotate simultaneously, thereby closing the closed door 204 and opening the ash discharge chute 205.

[0045] At the same time, closed doors 204 are fixedly installed at both ends of the muffler pipe 1, so two motors are provided to drive the two rotating plates 209 to rotate at the same time to achieve synchronous closing of the closed doors 204.

[0046] The filling layer 102 is located between the fixed sleeve 201 and the orifice plate 101, the rotating sleeve 202 is movably connected to the fixed sleeve 201, and both the rotating sleeve 202 and the fixed sleeve 201 are provided with dust discharge grooves 205. The closed door 204 is fixedly installed at both ends of the silencer 1, and an air collecting hood 103 and an air inlet pipe 104 are fixedly installed at the bottom of the silencer 1. The air inlet pipe 104 is located on one side of the air collecting hood 103, wherein an exhaust pipe is fixedly installed at the bottom of the air collecting hood 103, and the exhaust pipe is connected to an exhaust fan for extracting dust from the silencer 1.

[0047] In actual use, when the filling layer 102 inside the silencer 1 needs to be cleaned, the closing door 204 is started to close the two ends of the silencer 1. While the closing door 204 is closed, the rotating sleeve 202 rotates synchronously to overlap the ash discharge groove 205 on the rotating sleeve 202 and the fixed sleeve 201. At this time, high-pressure gas is transported to the inside of the silencer 1 through the air inlet pipe 104, and the high-pressure airflow contacts the filling layer 102 after passing through the orifice plate 101. The impurities in the filling layer 102 are driven by the high-pressure airflow to be discharged from the ash discharge groove 205, and the impurities are collected and discharged through the bottom air collecting hood 103. In this way, the filling layer 102 is cleaned without disassembly. At the same time, the cleaning time is short, and the impact on the work continuity is small, thereby realizing the rapid cleaning of the filling layer 102 inside the muffler.

[0048] The control panel 3 includes a comprehensive data collection unit, a work evaluation unit, a risk evaluation unit and a control unit;

[0049] The comprehensive data acquisition unit collects the internal interference factor data and external interference factor data of the protection equipment, and sends the internal interference factor data to the work evaluation unit and sends the external interference factor data to the control unit; the internal interference factor data includes the operation evaluation value and the noise reduction effect value, and the external interference factor data includes the wind pressure intensity distribution value.

[0050] After receiving the internal interference factor data, the work evaluation unit immediately performs risk evaluation and analysis on the internal interference factor data of the protection device. The specific steps are as follows:

[0051] Obtaining an operation evaluation value of the protection device in each sub-time period, the operation evaluation value represents the portion of the product value obtained after normalization of the operation parameters in the sub-time period that exceeds the stored preset threshold, and the operation parameters represent the stability value;

[0052] The stability value is obtained by collecting data from a vibration sensor fixedly installed on the silencer 1. The stability value indicates the amplitude of the silencer 1 when it is in use. The larger the value, the more abnormal vibrations are generated when the silencer 1 is in use. In a single use cycle of the silencer 1, the amplitude values ​​of multiple sub-time periods are collected, and the collected results are assigned the symbol X1.

[0053] During the operation of the silencer 1, a dynamic change curve is drawn with the sub-time as the X-axis and the X1 of the adjacent sub-time period as the Y-axis, and a preset dynamic change threshold curve is drawn in the coordinate system, and the difference between the interval difference of the dynamic risk change line above the preset dynamic change threshold line is obtained, and the difference is assigned to symbols A1, A2 and A3, etc., and according to the formula Obtain a stability value Xo, where A1, A2, and A3 are the differences in the interval differences under different horizontal coordinates, W1 and W2 are preset proportional coefficients, W1 and W2>0, and Xo is the stability value;

[0054] Obtain the silencing effect value of the protection device in each sub-time period, the silencing effect value indicates the number of times the value corresponding to the characteristic data of the protection device in the sub-time period exceeds the preset threshold, and the characteristic data indicates the environmental leakage value and decibel change value of the protection device in the sub-time period;

[0055] The environmental leakage volume indicates the volume of gas leaking out from the pipe connection during the use of the silencer 1. The larger the value, the greater the gas leakage, which in turn indicates that the sealing of the connection is worse. In a single working cycle, the environmental leakage volume Qi of multiple sub-time periods is collected.

[0056] The decibel change value is obtained by collecting data from multiple decibel detectors fixedly installed near the silencer 1, which indicates the degree of noise leaking out during the use of the silencer 1. The larger the value, the worse the noise reduction effect of the silencer 1. In a single working cycle, the decibel change values ​​DBi of multiple sub-time periods are collected.

[0057] After collecting the environmental leakage Qi and decibel change value DBi in the sub-time period, according to the formula Obtain a noise reduction effect value Zo, wherein K1, K2, K3 and Ei are preset proportional coefficients, K1, K2, K3, Ei>0, and Zo is the noise reduction effect value.

[0058] After collecting the stability value Xo and the noise reduction effect value Zo in the sub-time period, the formula The dynamic risk assessment coefficient Pi of the equipment in each sub-time period is obtained, where a, b and Li are preset proportional coefficients respectively, and a, b, Li>0. A rectangular coordinate system is established with each sub-time as the X-axis and the dynamic risk assessment coefficient Pi as the Y-axis, and a dynamic risk assessment coefficient curve is drawn by plotting points;

[0059] At the same time, a preset dynamic risk assessment coefficient threshold curve is drawn in the coordinate system, and the risk angle range value and risk difference value are obtained, and the risk angle range value and risk difference value are compared and analyzed with the preset risk angle range value and preset risk difference value entered and stored internally. The specific process is as follows:

[0060] If the risk angle range value is less than the preset risk angle range value, and the risk difference value is less than the preset risk difference value, no signal is generated; if the risk angle range value is greater than or equal to the preset angle range value, and the risk difference value is greater than or equal to the preset risk difference value, a risk signal is generated;

[0061] The obtained risk signal is transmitted to the risk assessment unit, and the risk assessment unit analyzes the protection equipment as follows:

[0062] After obtaining the risk signal of the protection equipment in each sub-time period, the risk signal is immediately evaluated and the risk level is judged. The risk logo is marked on the equipment display of the corresponding protection equipment and a warning red light flashes.

[0063] After receiving the external interference factor data, the control unit immediately performs control and analysis operations on the external interference factor data of the protection device. The specific steps are as follows:

[0064] Obtain the wind pressure intensity distribution value of the protection equipment in each sub-time period, the wind pressure intensity distribution value represents the part of the product value obtained after normalization of the operating parameters in the sub-time period that exceeds the stored preset threshold value, and the operating parameters represent the local pressure value;

[0065] The local pressure value is obtained by collecting data from multiple pressure sensors fixedly installed in the filling layer 102, which indicates the distribution of the internal wind pressure field during the use of the silencer 1. The larger the local pressure value collected by a single pressure sensor, the larger the gas volume and gas flow rate in the current area, which in turn indicates that the amount of noise generated in the current area is greater.

[0066] The number and position of the electromagnets are matched with the pressure sensor. After the local pressure value Po of each area in the sub-time period is detected, the formula The wind pressure intensity distribution value Io is obtained, wherein Ni and Mi are preset proportional coefficients, Ni, Mi>0, and Io is the wind pressure intensity distribution value.

[0067] After obtaining the wind pressure intensity distribution value Io of each area in the sub-time period, the control unit compares it with the preset value Lo. When Io≥Lo, the electromagnet current corresponding to the position of the area is Q1. When Io<Lo, the electromagnet current corresponding to the position of the area is Q2, where Q1>Q2. The greater the electromagnet current, the stronger the magnetic force it generates.

[0068] The specific working principle is:

[0069] When the electromagnet generates magnetic force, the magnetic material in the magnetic fluid gathers and forms a protective layer. When the sound waves are transmitted from the filling layer 102 to the fixed sleeve 201 and the rotating sleeve 202, the gathered magnetic material is used to further block the sound waves, and the sound waves are conducted and absorbed by the surrounding flowing liquid, which greatly improves the noise reduction ability of the silencer 1. By collecting data on internal and external interference factors during operation, corresponding control signals are obtained, and the operation process of the silencer 1 is comprehensively and efficiently supervised during use, that is, the collected data range is comprehensively analyzed and compared with the preset data range, so as to obtain relevant evaluation signals, and accordingly send corresponding warnings to the supervision end, and at the same time, the control components make compensatory actions, which effectively improve the silencer ability of the silencer.

[0070] Embodiment 2: This embodiment is used to solve the problem that when the amount of processed gas is large or the gas pressure is high, the muffler filling layer 102 tends to absorb more sound energy and heat energy during operation, which causes the temperature of the muffler filling layer 102 to gradually increase. Since traditional mufflers lack protective structures, they are easily damaged when exposed to high temperatures for a long time, resulting in increased processing costs.

[0071] See also Figure 7 - Figure 8As shown, the present invention also includes an electromagnet, and a plurality of electromagnets are fixedly installed on the inner wall of the silencer 1, a cavity 1 206 is opened in the fixed sleeve 201, and a cavity 207 is opened in the rotating sleeve 202, and the cavity 1 206 and the cavity 2 207 are filled with magnetic fluid, and the cavity 1 206 and the cavity 2 207 are connected by a pipeline, and the cavity 2 207 is fixedly connected to the water pump inside the box 203 through the pipeline, wherein the flow path of the magnetic fluid is specifically, the magnetic fluid in the box 203 is transported to the cavity 2 207 through the water pump, and then flows to the cavity 1 206 through the cavity 207, and then is transported from the cavity 1 206 to the box 203 through the pipeline, and the pipelines are all rubber hoses, and their length is long enough and will not affect the rotation of the rotating sleeve 202.

[0072] In the initial state, the ash discharge grooves 205 on the fixed sleeve 201 and the rotating sleeve 202 are staggered, and the ash discharge grooves 205 are in a closed state. During the use of the silencer 1, under the driving action of the water pump, the magnetic fluid circulates in cavity 1 206, cavity 2 207 and the box 203, thereby taking away the heat of the filling layer 102 and avoiding the high temperature inside the silencer, thereby protecting the silencer.

[0073] It can be seen from the combination of the first embodiment and the second embodiment that the corresponding control signal is obtained by collecting the data of the internal interference factors and the external interference factors during the use of the protection device, and the operation process of the silencer 1 is comprehensively and efficiently supervised during use, that is, the collected data range is comprehensively analyzed and compared with the preset data range, so as to obtain the relevant evaluation signal, and accordingly send the corresponding warning to the supervision end, so as to realize the accurate judgment and control of the use of the silencer 1;

[0074] At the same time, the cleaning efficiency of the filling layer 102 is effectively improved by using the closed door 204 and the air collecting hood 103 in coordination, so that the filling layer 102 inside the muffler can be quickly cleaned, which more effectively improves the continuity of the work. By using the fixed sleeve 201 and the rotating sleeve 202 in coordination and through the circulation of the magnetic fluid, the noise reduction capability of the muffler pipe 1 is effectively improved while protecting the muffler.

[0075] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A protective device for a dust removal fan muffler, comprising a muffler pipe (1), wherein a perforated plate (101) and a filling layer (102) are fixedly installed inside the muffler pipe (1), characterized in that: A protection mechanism (2) is fixedly mounted on the muffler pipe (1), the protection mechanism (2) comprising a fixed sleeve (201), a rotating sleeve (202), a box (203) and a closed door (204), the box (203) being located below the muffler pipe (1), and a control panel (3) is fixedly mounted on the box (203); The rotating sleeve (202) is movably sleeved on the fixed sleeve (201); both the rotating sleeve (202) and the fixed sleeve (201) are provided with ash discharge grooves (205); the closed door (204) is fixedly mounted on both ends of the muffler pipe (1); and an air collecting hood (103) and an air intake pipe (104) are fixedly mounted on the bottom of the muffler pipe (1); A plurality of electromagnets are fixedly mounted on the inner wall of the silencer pipe (1); a cavity one (206) is provided in the fixed sleeve (201); a cavity two (207) is provided in the rotating sleeve (202); the cavity one (206) and the cavity two (207) are filled with magnetic fluid; the cavity one (206) and the cavity two (207) are connected via a pipeline; and the cavity two (207) is fixedly connected to a water pump inside the box (203) via a pipeline.

2. The dust removal fan muffler protection device according to claim 1 is characterized in that: The closed door (204) is composed of a fixed plate (208) and a rotating plate (209); the fixed plate (208) is fixedly connected to the muffler pipe (1); the rotating plate (209) is movably connected to the fixed plate (208); a plurality of movable blocks (210) are movably installed between the rotating plate (209) and the fixed plate (208); and circular through grooves are provided at the centers of the rotating plate (209) and the fixed plate (208).

3. The dust removal fan muffler protection device according to claim 2 is characterized in that: A motor is fixedly mounted on the muffler pipe (1), a rotating rod (211) is fixedly mounted on the output end of the motor, and a gear 1 (212) and a gear 2 (213) are fixedly mounted on the rotating rod (211); A plurality of tooth blocks (214) are fixedly mounted on the outer circumference of the rotating plate (209), and the tooth blocks (214) are meshingly connected with the gears (212). A connecting block (215) is fixedly mounted on the outer wall of the rotating sleeve (202), and a tooth block (216) is fixedly mounted on the connecting block (215), and the gears (213) are meshingly connected with the tooth blocks (216).

4. The dust removal fan muffler protection device according to claim 3 is characterized in that: A connecting pipe (217) is movably connected to a side of the rotating plate (209) away from the fixed plate (208); a sliding block (218) is fixedly mounted on the inner circumference of the rotating plate (209); a sliding groove (219) is provided on the outer surface of the connecting pipe (217); the sliding block (218) is movably mounted in the sliding groove (219); and a connecting flange is fixedly mounted on a side of the connecting pipe (217) away from the silencer pipe (1).

5. The dust removal fan muffler protection device according to claim 1, characterized in that: The control panel (3) comprises a comprehensive data collection unit, a work evaluation unit, a risk evaluation unit and a control unit; The comprehensive data acquisition unit is used to collect the internal interference factor data and external interference factor data of the protection equipment, the internal interference factor data includes the operation evaluation value and the noise reduction effect value, and the external interference factor data includes the wind pressure intensity distribution value, and sends the internal interference factor data to the work evaluation unit, and sends the external interference factor data to the control unit; After receiving the internal interference factor data, the work evaluation unit performs work evaluation on the data, generates a risk signal according to the evaluation result, and sends the obtained risk signal to the risk evaluation unit via a communication connection; The risk assessment unit performs risk assessment after receiving the data from the work assessment unit, generates an abnormal signal according to the assessment result, and controls the component to make corresponding action instructions; After receiving the external interference factor data, the control unit performs a work evaluation on the data, generates a control signal according to the evaluation result, and controls the component to make corresponding action instructions according to the control signal.

6. The dust removal fan muffler protection device according to claim 5, characterized in that: The analysis process of the protection device by the working evaluation unit is as follows: Obtaining an operation evaluation value of the protection device in each sub-time period, the operation evaluation value represents the portion of the product value obtained after normalization of the operation parameters in the sub-time period that exceeds the stored preset threshold, and the operation parameters represent the stability value; The silencing effect value of the protection device in each sub-time period is obtained. The silencing effect value indicates the number of times that the value corresponding to the characteristic data of the protection device in the sub-time period exceeds the preset threshold. The characteristic data indicates the environmental leakage value and decibel change value of the protection device in the sub-time period.

7. A dust removal fan muffler protection device according to claim 6, characterized in that: The risk assessment unit analyzes the protective equipment as follows: After obtaining the operation evaluation value and the silencing effect value of the protection equipment in each sub-time period, the product value obtained after data normalization of the operation evaluation value and the silencing effect value is marked as the dynamic risk assessment coefficient, and then the dynamic risk assessment coefficient Pi of the equipment in each sub-time period is obtained. A rectangular coordinate system is established with the number of sub-times as the X-axis and the dynamic risk assessment coefficient Pi as the Y-axis, and a dynamic risk assessment coefficient curve is drawn by plotting points; At the same time, a preset dynamic risk assessment coefficient threshold curve is drawn in the coordinate system, and the risk angle range value and risk difference value are obtained. The risk angle range value and risk difference value are compared and analyzed with the preset risk angle range value and preset risk difference value entered and stored internally, and an abnormal signal is generated.

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