A bag breakage monitoring device and method for coal mill bag dust collector

Abstract

The present invention relates to the technical field of bag dust collectors, and in particular to a bag breakage monitoring device for coal mill bag dust collectors and a method thereof. The technical scheme includes: a housing, a support column, a placement hole, a fixing plate, a bearing plate and a connecting plate, the upper end outer wall of the bearing plate is equipped with a support column distributed in a rectangular array, a dust bag is placed inside the placement hole, a sleeve is provided on one side outer wall of the support column, an electric push rod is installed on the upper end of the outer wall of one side of the sleeve, a fixing plate is installed on one side of the outer wall of the lower end of the electric push rod, a connecting rod is movably installed inside the movable hole, and a connecting plate is installed on the lower end outer wall of the connecting rod. By arranging the sleeve, the pressure sensor and the connecting plate, the effect of facilitating the detection of the dust bag is achieved, ensuring that the state of the dust bag can be detected in time, and ensuring that the damaged dust bag can be shielded, ensuring the normal use of the normal dust bag, and shortening the downtime of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of bag dust collectors, and in particular to a bag breakage monitoring device and method for a coal mill bag dust collector. Background Art

[0002] Coal mill is a machine that crushes coal blocks and grinds them into coal powder. It is an important auxiliary equipment for coal powder furnace. The coal grinding process is the process of coal being crushed and its surface area increasing continuously. To increase the new surface area, the binding force between solid molecules must be overcome, which requires energy consumption. Coal is ground into coal powder in the coal mill, mainly through three methods: crushing, crushing and grinding. Among them, the crushing process consumes the least energy. The grinding process consumes the most energy. After the coal is ground, the powder in the air needs to be collected by a bag dust collector. The bag dust collector is a dry dust filter device that is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt. The filtering effect of the fiber fabric is used to filter the dust-containing gas. When the dust-containing gas enters the bag dust collector, the dust with large particles and high specific gravity settles down due to the action of gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified.

[0003] Patent announcement number CN110604981A discloses an intelligent detection method for broken bags of bag dust collectors. The method uses a dust concentration monitor to collect real-time dust concentration at the air outlet of the bag dust collector, and locates the position of the broken bag based on the dust concentration and the time reverse positioning method. The precise position of the broken bag is determined based on the corrected positioning. The broken bag is accurately and quickly located, which is convenient for the staff to quickly replace it later and ensure the normal use of the bag dust collector.

[0004] The prior art CN110604981A merely "installs a dust concentration monitor at the air outlet of the bag collector, and the dust concentration monitor and the pulse spray valves in each row of each bag chamber are connected to the controller to send the collected dust concentration values ​​to the controller in real time". After detecting the dust concentration, it detects the bag chambers one by one, which results in a long downtime of the equipment. In addition, there is a lack of a shielding structure for the bag chambers, which causes a large amount of dust to be continuously removed. Summary of the invention

[0005] The object of the present invention is to provide a bag breakage monitoring device and method for a coal mill bag dust collector to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A bag breakage monitoring device for a coal mill bag dust collector, comprising an outer shell, a support column, a placement hole, a fixing plate, a bearing plate and a connecting plate, a bearing plate is installed on one side of the inner wall of the outer shell, a rectangular array of placement holes are opened inside the bearing plate, a rectangular array of support columns are installed on the outer wall of the upper end of the bearing plate, the support columns correspond to the positions of the placement holes, a dust bag is placed inside the placement hole, a sleeve is provided on the outer wall of one side of the support column, an electric push rod is installed on the upper end of the outer wall of one side of the sleeve, a fixed plate is installed on one side of the outer wall of the lower end of the electric push rod, a movable hole is opened on the outer wall of the lower end of the fixing plate, a connecting rod is movably installed inside the movable hole, and a connecting plate is installed on the outer wall of the lower end of the connecting rod.

[0007] When using the bag breakage monitoring device and method for a coal mill bag dust collector in the technical solution, the dust-containing gas enters the outer shell through the air inlet pipe, and is discharged through the air outlet pipe after being filtered by the dust bag. The electric push rod pushes the connecting plate to move to the upper end of the support plate, and the recoil gas enters the dust bag through the bellows and the connecting pipe. After the dust bag expands, the dust adhered to the outer wall of the dust bag falls off until it falls into the discharge pipe and is removed. When the dust bag has a hole in it, the air flow rate and flow velocity flowing through the dust bag become larger, and the airflow will impact the connecting plate and the outer wall of the guide vane, thereby increasing the impact force of the connecting plate. The connecting plate squeezes the pressure sensor through the connecting rod and the extrusion plate, so that the pressure The sensor's detection data becomes higher and is transmitted to an external controller. The external controller can determine whether the dust bag is damaged based on changes in pressure data. The electric push rod pushes the connecting plate and the sealing gasket to squeeze the support plate. The sealing gasket and the rubber ring can ensure the sealing of the connecting plate and the support plate to the dust bag, thereby avoiding the continued use of damaged dust bags and ensuring the normal use of intact dust bags. After the staff shuts down the equipment, the electric push rod drives the fixed plate to reset, and the staff takes the wrench to turn the bolt to disengage the sleeve from control, and the staff manually turns the support rod to disengage the electric push rod from the upper end of the dust bag, making it easier for the staff to replace the dust bag.

[0008] Preferably, an air outlet pipe is plugged and installed on one side of the outer wall of the upper end of the shell, and the filtered gas inside the shell is discharged through the air outlet pipe;

[0009] A discharge pipe is plugged and installed on one side of the outer wall of the lower end of the shell, and the discharge pipe is connected to the inside of the external screw feeder, so that the collected materials inside the shell can fall into the inside of the screw feeder through the discharge pipe;

[0010] An air inlet pipe is plugged and installed at the lower end of the outer wall of one side of the shell, and the dust-containing gas enters the interior of the shell through the air inlet pipe.

[0011] Preferably, rubber rings are provided on the outer walls of both sides of the dust removal bag, and the two rubber rings are respectively located on the upper and lower sides of the supporting plate. The rubber rings can support the dust removal bag to ensure the position stability of the dust removal bag inside the placement hole.

[0012] Preferably, a support plate is placed on one side of the upper outer wall of the dust bag, and a frame is installed on the lower outer wall of the support plate. The frame adopts a cylindrical design and is located inside the dust bag. The frame can support the dust bag to ensure the shape stability of the dust bag.

[0013] Preferably, a bolt is threadedly connected to one side of the outer wall of the upper end of the support column, the bolt is located at the upper end of the sleeve, and the bolt can fix the sleeve to ensure the position stability of the sleeve;

[0014] The sleeve can be located outside the support column and rotated to adjust the use position of the electric push rod, so that the fixing plate is separated from the upper end of the dust removal bag.

[0015] Preferably, a pressure sensor is installed inside the fixing plate, and the pressure sensor is located at the upper end of the movable hole;

[0016] The outer wall of the upper end of the connecting rod is installed with an extrusion plate, which is located at the upper end of the movable hole and contacts the outer wall of the lower end of the pressure sensor. The pressure sensor can detect the extrusion force of the extrusion plate, thereby detecting the flow rate of the gas.

[0017] Preferably, the outer wall of the lower end of the connecting plate is provided with guide vanes distributed in a circular array, which can ensure the smooth flow of the gas flowing out of the dust removal bag.

[0018] Preferably, a sealing gasket is fixed to the outer wall of the lower end of the connecting plate, and the electric push rod can drive the connecting plate to move vertically until the sealing gasket squeezes the supporting plate, thereby covering the air holes inside the supporting plate to prevent the dust bag from being used further.

[0019] Preferably, a connecting pipe is installed on one side of the outer wall of the upper end of the connecting plate, and a bellows is installed on the connecting pipe through the outer wall of one end of the connecting plate. The recoil gas can enter the dust removal bag through the bellows and the connecting pipe, thereby cleaning the dust adhered to the outer wall of the dust removal bag.

[0020] A method for using a bag breakage monitoring device for a coal mill bag dust collector comprises the following steps:

[0021] Step 1: The dust-laden gas enters the housing through the air inlet pipe, is filtered by the dust bag, and is discharged through the air outlet pipe. The electric push rod pushes the connecting plate to move to the upper end of the support plate, and the recoil gas enters the dust bag through the bellows and the connecting pipe. After the dust bag expands, the dust adhering to the outer wall of the dust bag falls off until it falls into the discharge pipe and is removed;

[0022] Step 2: When the dust bag has a hole, the air flow and velocity through the dust bag increase, and the airflow will impact the connecting plate and the outer wall of the guide vane, increasing the impact force on the connecting plate. The connecting plate squeezes the pressure sensor through the connecting rod and the squeezing plate, making the detection data of the pressure sensor higher and transmitting it to the external controller. The external controller can determine whether the dust bag is damaged according to the change of pressure data.

[0023] Step 3: The electric push rod pushes the connecting plate and the sealing gasket to squeeze the supporting plate. The sealing gasket and the rubber ring can ensure the sealing of the connecting plate and the supporting plate to the dust bag, so as to avoid the damaged dust bag from being used further and ensure the normal use of the intact dust bag;

[0024] Step 4: After the staff shuts down the equipment, the electric push rod drives the fixed plate to reset. The staff takes the wrench to turn the bolt to make the sleeve out of control, and the staff manually turns the support rod to make the electric push rod out of the upper end of the dust bag, making it easier for the staff to replace the dust bag.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention achieves the effect of facilitating the detection of dust bags by setting a sleeve, a pressure sensor and a connecting plate, ensuring that the status of the dust bags can be detected in time, and that damaged dust bags can be shielded, thereby ensuring the normal use of normal dust bags and shortening the downtime of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic cross-sectional view of the housing structure of the present invention;

[0027] Figure 2 It is a partial enlarged schematic diagram of the bearing plate structure of the present invention;

[0028] Figure 3 It is an enlarged schematic diagram of the fixing plate structure of the present invention;

[0029] Figure 4 It is a partial enlarged schematic diagram of the support column structure of the present invention.

[0030] In the figure: 1. outer shell; 11. bearing plate; 12. air outlet pipe; 13. air inlet pipe; 14. discharge pipe; 2. support column; 21. sleeve; 22. bolt; 23. support rod; 24. electric push rod; 3. placement hole; 31. dust bag; 32. rubber ring; 33. support plate; 34. frame; 4. fixing plate; 41. movable hole; 42. connecting rod; 43. connecting plate; 44. guide vane; 45. sealing gasket; 46. connecting pipe; 47. pressure sensor; 48. bellows. DETAILED DESCRIPTION

[0031] 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.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figures 1 to 4 , the present invention provides three embodiments:

[0035] Embodiment 1: A bag breakage monitoring device and method for a coal mill bag dust collector, comprising a shell 1, a support column 2, a placement hole 3, a fixing plate 4, a bearing plate 11 and a connecting plate 43, a bearing plate 11 is installed on one side of the inner wall of the shell 1, and the bearing plate 11 is provided with placement holes 3 arranged in a rectangular array, a support column 2 arranged in a rectangular array is installed on the outer wall of the upper end of the bearing plate 11, the support column 2 corresponds to the placement hole 3, a dust bag 31 is placed in the placement hole 3, a sleeve 21 is provided on the outer wall of one side of the support column 2, and an electric push rod 24 is installed on the upper end of the outer wall of one side of the sleeve 21, as in the art As is well known to technicians, the dust collector device of the present invention also needs to provide an electric push rod 24 to enable it to work normally, and as is well known to those skilled in the art, the provision of the electric push rod 24 is commonplace, and they all belong to conventional means or common knowledge, and will not be repeated here. Those skilled in the art can make any optional selections according to their needs or convenience. A fixed plate 4 is installed on one side of the outer wall of the lower end of the electric push rod 24, and a movable hole 41 is opened on the outer wall of the lower end of the fixed plate 4, and a connecting rod 42 is movably installed inside the movable hole 41, and a connecting plate 43 is installed on the outer wall of the lower end of the connecting rod 42.

[0036] An air outlet pipe 12 is plugged and installed on one side of the outer wall of the upper end of the housing 1, and the filtered gas inside the housing 1 is discharged through the air outlet pipe 12;

[0037] A discharge pipe 14 is plugged and installed on one side of the outer wall of the lower end of the shell 1. The discharge pipe 14 is connected to the inside of the external screw feeder. The collected materials inside the shell 1 can fall into the inside of the screw feeder through the discharge pipe 14.

[0038] An air inlet pipe 13 is inserted and installed at the lower end of the outer wall of one side of the shell 1 , and the dust-laden gas enters the interior of the shell 1 through the air inlet pipe 13 .

[0039] Rubber rings 32 are provided on the outer walls of both sides of the dust removal bag 31. The two rubber rings 32 are respectively located on the upper and lower sides of the supporting plate 11. The rubber rings 32 can support the dust removal bag 31 to ensure the position stability of the dust removal bag 31 inside the placement hole 3.

[0040] A support plate 33 is placed on one side of the upper outer wall of the dust bag 31, and a frame 34 is installed on the lower outer wall of the support plate 33. The frame 34 adopts a cylindrical design and is located inside the dust bag 31. The frame 34 can support the dust bag 31 to ensure the shape stability of the dust bag 31.

[0041] A sealing gasket 45 is fixed to the outer wall of the lower end of the connecting plate 43, and the electric push rod 24 can drive the connecting plate 43 to move vertically until the sealing gasket 45 squeezes the supporting plate 33, thereby covering the air holes inside the supporting plate 33 to prevent the dust bag 31 from being used further.

[0042] A connecting pipe 46 is installed on one side of the outer wall of the upper end of the connecting plate 43, and a bellows 48 is installed on the outer wall of one end of the connecting plate 43. The recoil gas can enter the dust bag 31 through the bellows 48 and the connecting pipe 46, so as to clean the dust adhered to the outer wall of the dust bag 31. The dust-containing gas enters the shell 1 through the air inlet pipe 13, and is filtered by the dust bag 31 and then discharged through the air outlet pipe 12. The electric push rod 24 pushes the connecting plate 43 to move to the upper end of the support plate 33, and the recoil gas enters the dust bag 31 through the bellows 48 and the connecting pipe 46. After the dust bag 31 expands, the dust adhered to the outer wall of the dust bag 31 falls off until it falls into the discharge pipe 14 and is removed.

[0043] Embodiment 2: A bag breakage monitoring device and method for a coal mill bag dust collector, comprising an outer shell 1, a support column 2, a placement hole 3, a fixing plate 4, a bearing plate 11 and a connecting plate 43, wherein the bearing plate 11 is installed on one side of the inner wall of the outer shell 1, and the placement holes 3 arranged in a rectangular array are opened inside the bearing plate 11, and the support columns 2 arranged in a rectangular array are installed on the outer wall of the upper end of the bearing plate 11, and the positions of the support columns 2 and the placement holes 3 correspond, and a dust removal bag 31 is placed inside the placement hole 3, a sleeve 21 is provided on the outer wall of one side of the support column 2, an electric push rod 24 is installed on the upper end of the outer wall of one side of the sleeve 21, a fixing plate 4 is installed on one side of the outer wall of the lower end of the electric push rod 24, a movable hole 41 is opened on the outer wall of the lower end of the fixing plate 4, a connecting rod 42 is movably installed inside the movable hole 41, and a connecting plate 43 is installed on the outer wall of the lower end of the connecting rod 42.

[0044] Rubber rings 32 are provided on the outer walls of both sides of the dust removal bag 31. The two rubber rings 32 are respectively located on the upper and lower sides of the supporting plate 11. The rubber rings 32 can support the dust removal bag 31 to ensure the position stability of the dust removal bag 31 inside the placement hole 3.

[0045] A support plate 33 is placed on one side of the upper outer wall of the dust bag 31, and a frame 34 is installed on the lower outer wall of the support plate 33. The frame 34 adopts a cylindrical design and is located inside the dust bag 31. The frame 34 can support the dust bag 31 to ensure the shape stability of the dust bag 31.

[0046] A pressure sensor 47 is installed inside the fixed plate 4, and the pressure sensor 47 is located at the upper end of the movable hole 41;

[0047] An extrusion plate is installed on the outer wall of the upper end of the connecting rod 42. The extrusion plate is located at the upper end of the movable hole 41, and the extrusion plate contacts the outer wall of the lower end of the pressure sensor 47. The pressure sensor 47 can detect the extrusion force of the extrusion plate, thereby detecting the flow rate of the gas.

[0048] The outer wall of the lower end of the connecting plate 43 is installed with guide blades 44 distributed in a circular array, which can ensure the smooth flow of gas flowing out of the dust bag 31. When the dust bag 31 is broken, the air circulation volume and flow rate of the dust bag 31 will increase, and the air flow will impact the connecting plate 43 and the outer wall of the guide blades 44, thereby increasing the impact force on the connecting plate 43. The connecting plate 43 squeezes the pressure sensor 47 through the connecting rod 42 and the squeezing plate, so that the detection data of the pressure sensor 47 becomes higher and is transmitted to the external controller. The external controller can determine whether the dust bag 31 is damaged based on the change in pressure data.

[0049] A sealing gasket 45 is fixed to the outer wall of the lower end of the connecting plate 43, and the electric push rod 24 can drive the connecting plate 43 to move vertically until the sealing gasket 45 squeezes the supporting plate 33, thereby covering the air holes inside the supporting plate 33 to prevent the dust bag 31 from being used further. The electric push rod 24 pushes the connecting plate 43 and the sealing gasket 45 to squeeze the supporting plate 33. The sealing gasket 45 and the rubber ring 32 can ensure the sealing performance of the connecting plate 43 and the supporting plate 33 to the dust bag 31, thereby preventing the damaged dust bag 31 from being used further and ensuring the normal use of the intact dust bag 31.

[0050] Embodiment 3: A bag breakage monitoring device and method for a coal mill bag dust collector, comprising an outer shell 1, a support column 2, a placement hole 3, a fixing plate 4, a bearing plate 11 and a connecting plate 43, wherein the bearing plate 11 is installed on one side of the inner wall of the outer shell 1, and the placement holes 3 arranged in a rectangular array are provided inside the bearing plate 11, and the support columns 2 arranged in a rectangular array are installed on the outer wall of the upper end of the bearing plate 11, and the positions of the support columns 2 and the placement holes 3 correspond, and a dust removal bag 31 is placed inside the placement hole 3, a sleeve 21 is provided on the outer wall of one side of the support column 2, an electric push rod 24 is installed on the upper end of the outer wall of one side of the sleeve 21, a fixing plate 4 is installed on one side of the outer wall of the lower end of the electric push rod 24, a movable hole 41 is provided on the outer wall of the lower end of the fixing plate 4, a connecting rod 42 is movably installed inside the movable hole 41, and a connecting plate 43 is installed on the outer wall of the lower end of the connecting rod 42.

[0051] Rubber rings 32 are provided on the outer walls of both sides of the dust removal bag 31. The two rubber rings 32 are respectively located on the upper and lower sides of the supporting plate 11. The rubber rings 32 can support the dust removal bag 31 to ensure the position stability of the dust removal bag 31 inside the placement hole 3.

[0052] A support plate 33 is placed on one side of the upper outer wall of the dust bag 31, and a frame 34 is installed on the lower outer wall of the support plate 33. The frame 34 adopts a cylindrical design and is located inside the dust bag 31. The frame 34 can support the dust bag 31 to ensure the shape stability of the dust bag 31.

[0053] A bolt 22 is threadedly connected to one side of the outer wall of the upper end of the support column 2. The bolt 22 is located at the upper end of the sleeve 21, and the bolt 22 can fix the sleeve 21 to ensure the position stability of the sleeve 21;

[0054] The sleeve 21 can be located outside the support column 2 and rotate, and can adjust the use position of the electric push rod 24, so that the fixing plate 4 is separated from the upper end of the dust bag 31. After the staff shuts down the equipment, the electric push rod 24 drives the fixing plate 4 to reset, and the staff takes the wrench to turn the bolt 22 to separate the sleeve 21 from the control, and the staff manually turns the support rod 23 to separate the electric push rod 24 from the upper end of the dust bag 31, so that the staff can replace the dust bag 31 conveniently.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A bag breakage monitoring device for a coal mill bag dust collector, comprising a housing (1), a support column (2), a placement hole (3), a fixing plate (4), a bearing plate (11) and a connecting plate (43), characterized in that: A bearing plate (11) is installed on one side of the inner wall of the housing (1), and placement holes (3) arranged in a rectangular array are provided inside the bearing plate (11), and support columns (2) arranged in a rectangular array are installed on the outer wall of the upper end of the bearing plate (11), and the positions of the support columns (2) and the placement holes (3) correspond to each other, and a dust removal bag (31) is placed inside the placement hole (3), and a sleeve (21) is provided on the outer wall of one side of the support column (2), and an electric push rod (24) is installed on the upper end of the outer wall of one side of the sleeve (21), and a fixing plate (4) is installed on one side of the outer wall of the lower end of the electric push rod (24), and a movable hole (41) is provided on the outer wall of the lower end of the fixing plate (4), and a connecting rod (42) is movably installed inside the movable hole (41), and a connecting plate (43) is installed on the outer wall of the lower end of the connecting rod (42); An air outlet pipe (12) is plugged and installed on one side of the outer wall of the upper end of the shell (1), and the gas filtered inside the shell (1) is discharged through the air outlet pipe (12); A discharge pipe (14) is plugged and installed on one side of the outer wall of the lower end of the shell (1), and the discharge pipe (14) is connected to the inside of the external screw feeder, so that the collected materials inside the shell (1) can fall into the inside of the screw feeder through the discharge pipe (14); An air inlet pipe (13) is plugged and installed at the lower end of the outer wall of one side of the housing (1), and dust-containing gas enters the interior of the housing (1) through the air inlet pipe (13); A pressure sensor (47) is installed inside the fixed plate (4), and the pressure sensor (47) is located at the upper end of the movable hole (41); An extrusion plate is installed on the outer wall of the upper end of the connecting rod (42). The extrusion plate is located at the upper end of the movable hole (41), and the extrusion plate is in contact with the outer wall of the lower end of the pressure sensor (47). The pressure sensor (47) can detect the extrusion force of the extrusion plate, thereby detecting the flow rate of gas.

2. A bag breakage monitoring device for a coal mill bag dust collector according to claim 1, characterized in that: The outer walls of both sides of the dust removal bag (31) are provided with rubber rings (32), and the two rubber rings (32) are respectively located on the upper and lower sides of the carrying plate (11), and the rubber rings (32) can support the dust removal bag (31) to ensure the position stability of the dust removal bag (31) inside the placement hole (3).

3. A bag breakage monitoring device for a coal mill bag dust collector according to claim 2, characterized in that: A support plate (33) is placed on one side of the outer wall of the upper end of the dust removal bag (31), and a frame (34) is installed on the outer wall of the lower end of the support plate (33). The frame (34) is cylindrical in design and is located inside the dust removal bag (31). The frame (34) can support the dust removal bag (31) to ensure the shape stability of the dust removal bag (31).

4. A bag breakage monitoring device for a coal mill bag dust collector according to claim 3, characterized in that: A bolt (22) is threadedly connected to one side of the outer wall of the upper end of the support column (2), and the bolt (22) is located at the upper end of the sleeve (21). The bolt (22) can fix the sleeve (21) to ensure the position stability of the sleeve (21); The sleeve (21) can be located outside the support column (2) and rotated to adjust the use position of the electric push rod (24), thereby separating the fixing plate (4) from the upper end of the dust removal bag (31).

5. A bag breakage monitoring device for a coal mill bag dust collector according to claim 4, characterized in that: The outer wall of the lower end of the connecting plate (43) is provided with guide blades (44) distributed in a circular array, which can ensure the smooth flow of the gas flowing out of the dust removal bag (31).

6. A bag breakage monitoring device for a coal mill bag dust collector according to claim 5, characterized in that: A sealing gasket (45) is fixedly attached to the outer wall of the lower end of the connecting plate (43), and the electric push rod (24) can drive the connecting plate (43) to move vertically until the sealing gasket (45) presses the supporting plate (33), thereby covering the air vents inside the supporting plate (33) to prevent the dust bag (31) from being used further.

7. A bag breakage monitoring device for a coal mill bag dust collector according to claim 6, characterized in that: A connecting pipe (46) is plugged and installed on one side of the outer wall of the upper end of the connecting plate (43); the connecting pipe (46) penetrates the outer wall of one end of the connecting plate (43) and is plugged and installed with a bellows (48); the recoil gas can enter the interior of the dust removal bag (31) through the bellows (48) and the connecting pipe (46), thereby cleaning the dust adhered to the outer wall of the dust removal bag (31).

8. The method for using a bag breakage monitoring device for a coal mill bag dust collector according to claim 7, characterized in that: The steps include: Step 1: The dust-containing gas enters the interior of the housing (1) through the air inlet pipe (13), is filtered through the dust bag (31), and is discharged through the air outlet pipe (12). The electric push rod (24) pushes the connecting plate (43) to move to the upper end of the support plate (33), and the recoil gas enters the interior of the dust bag (31) through the bellows (48) and the connecting pipe (46). After the dust bag (31) expands, the dust adhered to the outer wall of the dust bag (31) falls off until it falls into the inside of the discharge pipe (14) and is removed; Step 2: When the dust bag (31) has a hole in the dust removal, the air flow rate and flow velocity of the air flowing through the dust bag (31) increase, and the airflow impacts the outer wall of the connecting plate (43) and the guide blade (44), thereby increasing the impact force on the connecting plate (43). The connecting plate (43) squeezes the pressure sensor (47) through the connecting rod (42) and the squeezing plate, thereby increasing the detection data of the pressure sensor (47) and transmitting it to an external controller. The external controller can determine whether the dust bag (31) is damaged based on the change in the pressure data. Step 3: The electric push rod (24) pushes the connecting plate (43) and the sealing pad (45) to squeeze the supporting plate (33). The sealing pad (45) and the rubber ring (32) can ensure that the connecting plate (43) and the supporting plate (33) are sealed to the dust bag (31), so that the damaged dust bag (31) is prevented from being used further and the intact dust bag (31) can be used normally. Step 4: After the staff stops the equipment, the electric push rod (24) drives the fixing plate (4) to reset, and the staff takes a wrench to rotate the bolt (22) to make the sleeve (21) out of control, and the staff manually rotates the support rod (23) to make the electric push rod (24) out of the upper end of the dust bag (31), so that the staff can replace the dust bag (31) easily.

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