A self-cleaning assembly and method for cement pulverizing coal dust removal filter bag

Abstract

The present invention discloses a self-cleaning assembly and method for cement coal grinding dust filter bags, and relates to the technical field of dust removal and filtration. In the present invention: the bottom end of the first shaft of the first telescopic device is connected to a multi-faceted mounting block, and each mounting surface of the multi-faceted mounting block is provided with a fixed sleeve box containing an open mounting cavity and a guide through groove, and a tension spring is arranged in the open mounting cavity, and a movable plug-in is placed in the open mounting cavity and the guide through groove and protrudes outward, and a C-shaped magnetic suction part is fixed on the side end of the movable plug-in. The bottom end of the second shaft of the second telescopic device is connected to an annular jet component, and electromagnetic rings cooperating with the magnetic suction part are also fixed at the upper and lower ends of the annular jet component, and the annular jet component is surrounded by a plurality of horizontal air outlet pipes surrounding the dust filter bag, and the air outlet is directly opposite to the filter bag and connected to the air supply pipeline, and the air supply pipeline is connected to the air supply mechanism. The present invention realizes dynamic cleaning of the dust filter bag, and avoids the problem that the production system stops working due to the need to clean the dust filter bag.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal and filtration, and in particular to a cement pulverizing coal dust removal filter bag self-cleaning component and method. Background Art

[0002] Cement coal grinding is an important link in the cement production process. A large amount of dust will be generated in the process. Generally, dust removal filter bags are used directly to filter the large amount of dust generated in the process.

[0003] During the use of dust filter bags, the dust has certain stickiness and hygroscopicity, which can easily cause scaling on the inner surface of the dust filter bags, making it difficult to remove by conventional cleaning methods.

[0004] Currently, many technicians directly dismantle the dust filter bags for cleaning. Although this can remove the stubborn scale attached to the inner surface of the dust filter bags, it requires the dust collector equipment to be shut down, which means that the entire cement coal grinding production system will completely stop working.

[0005] In summary, how to effectively clean the dust filter bags while avoiding the production system from stopping due to the need to clean the dust filter bags has become a problem that needs to be solved. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a self-cleaning component and method for cement pulverizing coal dust filter bags, thereby realizing dynamic cleaning of the dust filter bags and avoiding the problem of the production system stopping work due to the need to clean the dust filter bags.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The present invention provides a self-cleaning assembly for cement pulverized coal dust filter bags, wherein the air inlet side of the dust filter bag is installed on the lower side of a fixed platform, the fixed platform is provided with an air inlet pipe for injecting exhaust gas into the dust filter bag, a first retractor and a second retractor are fixedly installed on the upper side of the fixed platform, the first retractor is provided with a first shaft rod extending into the dust filter bag, and the bottom end of the first shaft rod is fixedly connected to a multi-faceted mounting block. A plurality of mounting surfaces are arranged on the ring side of the multi-faceted mounting block, and each mounting surface of the multi-faceted mounting block is provided with a fixed sleeve box, which comprises a fixed shell, an open mounting cavity located in the inner periphery of the fixed shell, and a guide through groove located on one side end surface of the fixed shell and connected to the open mounting cavity.

[0009] An active plug-in protruding from the fixed shell is installed at the open installation cavity and the guide slot of the fixed shell, and a tension spring is installed in the open installation cavity of the fixed shell, and the tension spring is located between the multi-faceted installation block and the active plug-in. A C-shaped magnetic attraction piece is fixedly installed on the side end of the active plug-in protruding from the fixed shell, and the C-shaped magnetic attraction piece includes a C-shaped plastic part and a magnetic attraction part fixedly installed on the upper and lower side ends of the C-shaped plastic part.

[0010] The second telescopic device is equipped with a second shaft located on the outside of the dust filter bag. The bottom end of the second shaft is fixedly connected to an annular jet component. A plurality of horizontal air outlet pipes surrounding the outer periphery of the dust filter bag are evenly arranged on the inner periphery of the annular jet component. The air outlets of the horizontal air outlet pipes are directly opposite to the dust filter bag. The plurality of horizontal air outlet pipes are also commonly connected to an air supply pipeline. The air supply pipeline is connected to an air supply mechanism upstream. Electromagnetic rings cooperating with the magnetic suction part are fixedly installed on the upper and lower side ends of the annular jet component.

[0011] As a preferred technical solution for the dust filter bag self-cleaning component in the present invention: each mounting surface of the multi-sided mounting block is provided with a first connecting slot, and a second connecting slot aligned with the first connecting slot is provided on the side of the movable plug-in facing the multi-sided mounting block, one end of the tension spring is fixedly installed at the position of the first connecting slot, and the other end of the tension spring is fixedly installed at the position of the second connecting slot.

[0012] As a preferred technical solution for the dust filter bag self-cleaning component in the present invention: each mounting surface of the multi-sided mounting block is provided with two ring side threaded holes, the fixed shell is provided with mounting side plates located at the upper and lower sides of the open mounting cavity, the mounting side plates are provided with side plate through holes matching the ring side threaded holes, and second fixing bolts are installed at the side plate through holes and the ring side threaded holes.

[0013] As a preferred technical solution of the dust filter bag self-cleaning component in the present invention: the movable plug-in includes a movable plug-in plate, vertical protrusions located at the upper and lower sides of one side of the movable plug-in plate, and a transverse protrusion located at the other side of the movable plug-in plate, and the C-shaped plastic part is provided with a horizontal slot that matches the transverse protrusion. The vertical protrusion is slidably installed in the open installation cavity, and the movable plug-in plate moves through the guide slot.

[0014] As a preferred technical solution for the self-cleaning component of the dust filter bag in the present invention: an outer threaded hole is opened in the middle position of the side end face where the lateral protrusion is located, and a through hole matching the outer threaded hole is opened in the C-shaped plastic part, and a first fixing bolt is installed at the through hole and the outer threaded hole.

[0015] As a preferred technical solution for the self-cleaning assembly of the dust filter bag in the present invention: assuming that the vertical dimension of the open installation cavity is La, the vertical dimension of the guide groove is Lc, the vertical span dimension of the two vertical protrusions of the movable plug-in is Le, and the vertical dimension of the movable plug-in plate is Ls, then La>Le>Lc>Ls.

[0016] As a preferred technical solution of the dust filter bag self-cleaning assembly in the present invention: a guide tube is fixedly welded to the outer ring side of the electromagnetic ring, the guide tube includes a guide vertical groove, and the fixed platform is equipped with an auxiliary guide rod passing through the guide vertical groove.

[0017] The present invention provides a self-cleaning method for cement pulverized coal dust removal filter bag, comprising the following contents:

[0018] S1. After the dust filter bag has been used for a long time, the control system detects that the air flow resistance to the dust filter bag has increased.

[0019] S2. The first retractor and the second retractor are started, and the first retractor drives the combined structure of the movable plug-in, the fixed sleeve, and the C-shaped magnetic suction piece to move down a system preset distance value. Among them, the system preset distance value is the same as the distance between the two electromagnetic rings in the vertical direction. In fact, the system preset distance value is also the vertical opening size of the annular jet part facing inward.

[0020] S3. The second retractor drives the annular jet component to move synchronously, and the electromagnetic ring is horizontally aligned with the magnetic attraction part of the C-shaped magnetic attraction component.

[0021] S4. The electromagnetic ring is energized at the power-on frequency f preset by the system. Each time the power is continuously energized for a period of time T, the magnetic attraction of the C-shaped magnetic attraction part is completed once and hits the inner surface of the dust filter bag once. When the electromagnetic ring remains energized, the magnetic attraction of the C-shaped magnetic attraction part moves toward the electromagnetic ring. When the electromagnetic ring is de-energized, the active plug-in is subjected to the tension of the tension spring, and the magnetic attraction of the C-shaped magnetic attraction part retreats, and the magnetic attraction part repeatedly hits the inner surface of the dust filter bag over and over again.

[0022] S5. When the electromagnetic ring is energized, the air supply mechanism starts, and the air supply mechanism supplies air to the horizontal air outlet pipe inside the annular jet component through the air supply pipeline, and the horizontal air outlet pipe blows air in the reverse direction to the dust filter bag.

[0023] S6. With the periodic impact of the magnetic suction part on the dust filter bag and the reverse blowing of the horizontal air outlet pipe on the dust filter bag, the blockage on the inner surface of the dust filter bag is separated from the dust filter bag.

[0024] S7. The first telescopic device drives the combined structure of the movable plug-in, the fixed sleeve, and the C-shaped magnetic suction part to move down a distance preset by the system, and repeats the contents of S3 to S6 until the entire inner surface of the filter bag is cleaned or the air intake pipe detects that the air flow resistance to the dust filter bag is lower than the air flow reference resistance preset by the system.

[0025] In addition, a cleaning collector is installed under the dust filter bag. After the cleaning of the entire dust filter bag is completed, the control system opens the cleaning collector once to collect the stubborn scale that has been separated from the surface of the dust filter bag.

[0026] During the above cleaning process, the air intake pipe can continue to take in air, and the dust filter bag continues to perform flue gas dust removal and filtration.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention designs an elastically retractable C-shaped magnetic component to cooperate with an annular air-jet component, uses an electromagnetic ring to energize according to the power-on frequency and duration preset by the system, accurately controls the impact action of the C-shaped magnetic component, cooperates with the air supply mechanism to supply air, and blows air in the reverse direction through a horizontal air outlet pipe, so that the blockage on the inner surface of the dust filter bag is separated from the filter bag, thereby achieving efficient cleaning.

[0029] 2. In the present invention, the multiple mounting surfaces of the multi-faceted mounting block are all mounted with fixed sleeves and C-shaped magnetic suction parts, so that the inner surface of the dust filter bag can be cleaned in all directions.

[0030] 3. In the whole cleaning process of the present invention, the dust filter bag can continuously take in air and perform flue gas dust removal and filtration, and there is no need to remove the dust filter bag, thus avoiding the shutdown of the dust collector equipment and ensuring the continuous operation of the cement coal grinding production system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall schematic diagram of the self-cleaning assembly of the dust filter bag in the present invention.

[0032] Figure 2 It is a combined cross-sectional view of the multi-faceted mounting block, tension spring, movable plug-in unit, fixed sleeve box and C-shaped magnetic attraction member in the present invention.

[0033] Figure 3 It is a cross-sectional view of the annular jet element in the present invention.

[0034] Figure 4 It is a schematic diagram of the combined structure of the multi-faceted mounting block, the movable plug-in unit, the fixed sleeve box and the C-shaped magnetic attraction member in the present invention.

[0035] Figure 5 It is a schematic diagram of the disassembled structure of the components of the multi-faceted mounting block, the movable plug-in unit, the fixed sleeve box, and the C-shaped magnetic attraction unit in the present invention.

[0036] Figure 6 for Figure 5 Another side view of .

[0037] Figure 7 The structure of the active plug-in in the present invention is shown in FIG. Figure 1 .

[0038] Figure 8 The structure of the active plug-in in the present invention is shown in FIG. Figure 2 .

[0039] Fig. 9 The structure of the fixed box in the present invention is shown in FIG. Figure 1 .

[0040] Fig.10 The structure of the fixed box in the present invention is shown in FIG. Figure 2 .

[0041] Fig.11 It is a schematic diagram of the structure of the C-shaped magnetic attraction member in the present invention.

[0042] Among them: 1-dust filter bag; 2-fixed platform; 3-intake pipe; 4-first telescopic device, 401-first shaft, 402-multi-faceted mounting block, 4021-first connecting slot, 4022-ring side threaded hole; 5-tension spring; 6-movable plug-in, 601-movable plug-in plate, 602-vertical protrusion, 603-second connecting slot, 604-lateral protrusion, 605-outer threaded hole; 7-fixed sleeve, 701-fixed shell, 702-mounting side plate, 703-open mounting cavity, 7 04-side plate through hole, 705-guide through groove; 8-C-shaped magnetic part, 801-C-shaped plastic part, 802-magnetic part, 803-horizontal slot, 804-through hole; 9-first fixing bolt; 10-second fixing bolt; 11-second telescopic device, 1101-second shaft rod; 12-annular jet part, 1201-horizontal air outlet pipe, 1202-electromagnetic ring, 1203-guide pipe, 1204-guide vertical groove; 13-air supply mechanism; 14-air supply pipeline; 15-auxiliary guide rod. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] Embodiment 1: The present invention designs a cement pulverizing coal dust filter bag self-cleaning assembly, and the specific structural design is as follows:

[0045] Configuration of fixed platform and dust filter bag: as attached Figure 1 As shown, the air inlet side of the dust filter bag 1 is installed on the lower side of the fixed platform 2, and the fixed platform 2 provides a stable support base for the entire assembly. At the same time, an air inlet pipe 3 for injecting exhaust gas into the dust filter bag 1 is installed on the fixed platform 2. The air inlet pipe 3 is responsible for introducing dust-containing exhaust gas into the dust filter bag 1 for filtering during normal operation.

[0046] Configuration of expansion joint and related parts: as shown in the attached Figure 1As shown, the first retractor 4 and the second retractor 11 are fixedly installed on the upper side of the fixed platform 2. The first retractor 4 extends into the dust filter bag 1 through the first shaft 401 configured therein, and the bottom end of the first shaft 401 is fixedly connected to the multi-faceted mounting block 402, which is the mounting carrier of the subsequent multiple cleaning-related components. The second retractor 11 is connected to the annular jet component 12 located outside the dust filter bag 1 through its second shaft 1101, and the second retractor 11 is used to control the up and down movement of the annular jet component 12.

[0047] Multi-sided mounting block and its connection: as shown in the attached Figure 4 , 5 As shown in Figures 6 and 7, the multi-faceted mounting block 402 is provided with a plurality of mounting surfaces on the ring side, and each mounting surface is used to mount the fixed sleeve 7 and related components. Each mounting surface of the multi-faceted mounting block 402 is provided with a first connection slot 4021 and two ring-side threaded holes 4022. The first connection slot 4021 is used to mount the tension spring 5, and the two ring-side threaded holes 4022 are used to securely mount the fixed sleeve 7 on the multi-faceted mounting block 402 by cooperating with the mounting side plate 702 on the fixed sleeve 7, using the second fixing bolts 10, thereby achieving a stable connection between the multi-faceted mounting block 402 and the fixed sleeve 7, providing basic support for subsequent internal cleaning actions.

[0048] Fixed box and movable plug-in structure: as attached Fig. 9 , 10 As shown, the fixed housing 7 includes a fixed housing 701, an open mounting cavity 703 located inside the fixed housing 701, and a guide groove 705 located on one side of the fixed housing 701 and connected to the open mounting cavity 703. Figure 7 , 8 As shown, a movable plug-in 6 is installed at the open installation cavity 703 and the guide slot 705 of the fixed housing 701, and the movable plug-in 6 includes a movable plug-in plate 601, vertical protrusions 602 located at the upper and lower sides of one side of the movable plug-in plate 601, and a transverse protrusion 604 located at the other side of the movable plug-in plate 601. The vertical protrusion 602 is slidably installed in the open installation cavity 703, and the movable plug-in plate 601 movably passes through the guide slot 705. This structural design enables the movable plug-in 6 to slide in a specific direction in the fixed sleeve 7, and maintain a stable motion trajectory when subjected to external force.

[0049] Installation of tension spring and C-shaped magnetic suction piece: as shown in the attached Figure 2 , 5As shown in Figures 6 and 9, a tension spring 5 is installed in the open mounting cavity 703 of the fixed housing 701. One end of the tension spring 5 is fixedly installed at the first connection slot 4021 of the multi-faceted mounting block 402, and the other end is fixedly installed at the second connection slot 603 opened on the side of the movable plug-in 6 facing the multi-faceted mounting block 402. When the movable plug-in 6 is displaced by an external force, the tension spring 5 will be stretched to store elastic potential energy. When the external force disappears, the tension spring 5 releases the elastic potential energy, so that the movable plug-in 6 returns to its initial position inward along the fixed housing 701. A C-shaped magnetic attraction part 8 is fixedly installed on the side end of the movable plug-in 6 protruding from the fixed housing 701, combined with the magnetic attraction part 8 of the fixed housing 701. Figure 8 , Fig.11 The C-shaped magnetic member 8 includes a C-shaped plastic member 801 and a magnetic attraction portion 802 fixedly mounted on the upper and lower side ends of the C-shaped plastic member 801. The C-shaped plastic member 801 is provided with a horizontal slot 803 that matches the transverse protrusion 604 of the movable plug-in 6 and is fixedly connected by a first fixing bolt 9. In this way, the C-shaped magnetic member 8 can move synchronously with the movable plug-in 6 and realize a specific functional action under the action of the electromagnetic ring 1202 (combined with Figure 1 ).

[0050] Connection between the annular jet element and the second shaft: Combination Figure 1 , Figure 3 The bottom end of the second shaft 1101 is fixedly connected to the annular jet component 12. The inner periphery of the annular jet component 12 is evenly provided with a plurality of horizontal air outlet pipes 1201 surrounding the outer periphery of the dust filter bag 1. The air outlet of the horizontal air outlet pipe 1201 is directly facing the dust filter bag 1, and is used to blow air in the reverse direction to the dust filter bag 1 to assist in cleaning. The plurality of horizontal air outlet pipes 1201 are connected to the air supply pipeline 14 in common. The upstream of the air supply pipeline 14 is connected to the air supply mechanism 13 to provide an air source for jetting.

[0051] Electromagnetic ring and guide structure: combination Figure 1 , Figure 2 , Figure 3 The upper and lower side ends of the annular jet component 12 are fixedly installed with electromagnetic rings 1202 that cooperate with the magnetic suction portion 802 of the C-shaped magnetic suction component 8. The outer ring side of the electromagnetic ring 1202 is fixedly welded with a guide tube 1203. The guide tube 1203 includes a guide vertical groove 1204. The fixed platform 2 is installed with an auxiliary guide rod 15 that passes through the guide vertical groove 1204, which is used to ensure the stability of the annular jet component 12 when it moves up and down, so that the electromagnetic ring 1202 and the C-shaped magnetic suction component 8 can work accurately.

[0052] Embodiment 2: The present invention designs a self-cleaning method for cement pulverized coal dust filter bag, and the specific steps are as follows:

[0053] Step 1: Monitoring air flow resistance: After the dust filter bag 1 has been used for a long time, the control system detects that the air flow resistance supplying air to the dust filter bag 1 increases.

[0054] Link 2: First retractor action: The first retractor 4 and the second retractor 11 are started, and the first retractor 4 drives the combined structure of the movable plug-in 6, the fixed sleeve 7, and the C-shaped magnetic suction member 8 to move down a system preset distance value. The system preset distance value is the same as the distance between the two electromagnetic rings 1202 in the vertical direction (i.e., the vertical opening size of the annular jet member 12 facing inward).

[0055] Step three, action of the second retractor: the second retractor 11 drives the annular jet component 12 to move synchronously, so that the electromagnetic ring 1202 is horizontally aligned with the magnetic attraction portion 802 of the C-shaped magnetic attraction component 8.

[0056] Link 4: Electromagnetic ring energization and magnetic impact: The electromagnetic ring 1202 is energized according to the preset energization frequency f of the system. Each time the energization lasts for a period of time T, the magnetic attraction portion 802 of the C-shaped magnetic attraction member 8 completes a magnetic attraction action and impacts the inner surface of the dust filter bag 1. When the electromagnetic ring 1202 remains energized, the magnetic attraction portion of the C-shaped magnetic attraction member 8 moves toward the electromagnetic ring. When the electromagnetic ring 1202 is de-energized, the active plug-in 6 is pulled by the tension spring 5, and the magnetic attraction portion 802 of the C-shaped magnetic attraction member 8 retreats. This cycle repeats, and the magnetic attraction portion 802 repeatedly impacts the inner surface of the dust filter bag 1.

[0057] Step 5: Jet backblowing: When the electromagnetic ring 1202 is energized, the air supply mechanism 13 is started, and the air supply mechanism 13 supplies air to the horizontal air outlet pipe 1201 inside the annular jet component 12 through the air supply pipeline 14, and the horizontal air outlet pipe 1201 blows air in the reverse direction to the dust filter bag 1.

[0058] Step 6: Separation of blockages: With the periodic impact of the magnetic suction part 802 on the dust filter bag 1 and the reverse blowing of the horizontal air outlet pipe 1201 on the dust filter bag 1, the blockages on the inner surface of the dust filter bag 1 are separated from the dust filter bag 1.

[0059] Finally, repeat the cleaning and completion judgment: the first telescopic device 4 drives the combined structure of the movable plug-in 6, the fixed sleeve 7, and the C-shaped magnetic suction part 8 to move down a distance value preset by the system, and repeat the contents of steps three to six until the cleaning of the inner surface of the entire dust filter bag 1 is completed or the air intake pipe detects that the air flow resistance to the dust filter bag 1 is lower than the air flow reference resistance preset by the system. A cleaning collector is installed under the dust filter bag 1. After the cleaning of the entire dust filter bag 1 is completed, the control system opens the cleaning collector once to collect the stubborn scale that has been separated from the surface of the dust filter bag 1. During the above cleaning process, the air intake pipe 3 can continue to take in air, and the dust filter bag 1 continues to perform flue gas dust removal and filtration.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cement pulverizing coal dust filter bag self-cleaning assembly, wherein the air inlet side of the dust filter bag (1) is mounted on the lower side of a fixed platform (2), and the fixed platform (2) is equipped with an air inlet pipe (3) for injecting exhaust gas into the dust filter bag (1), characterized in that: A first telescopic device (4) and a second telescopic device (11) are fixedly mounted on the upper side of the fixed platform (2); the first telescopic device (4) is provided with a first shaft (401) extending into the dust filter bag (1); the bottom end of the first shaft (401) is fixedly connected to a multi-faceted mounting block (402); The multi-faceted mounting block (402) is provided with a plurality of mounting surfaces on its annular side, each mounting surface of the multi-faceted mounting block (402) being provided with a fixed sleeve (7), the fixed sleeve (7) comprising a fixed outer shell (701), an open mounting cavity (703) located within the fixed outer shell (701), and a guide groove (705) located on an end surface of one side of the fixed outer shell (701) and communicating with the open mounting cavity (703); A movable plug-in (6) protruding from the fixed shell (701) is installed at the open installation cavity (703) and the guide groove (705) of the fixed shell (701), and a tension spring (5) is installed in the open installation cavity (703) of the fixed shell (701), and the tension spring (5) is located between the multi-faceted installation block (402) and the movable plug-in (6); A C-shaped magnetic attraction component (8) is fixedly mounted on the side end of the movable plug-in unit (6) protruding from the fixed housing (701), and the C-shaped magnetic attraction component (8) comprises a C-shaped plastic component (801) and magnetic attraction portions (802) fixedly mounted on the upper and lower side ends of the C-shaped plastic component (801); The second telescopic device (11) is provided with a second shaft (1101) located outside the dust filter bag (1); the bottom end of the second shaft (1101) is fixedly connected to the annular jet component (12); a plurality of horizontal air outlet pipes (1201) surrounding the outer periphery of the dust filter bag (1) are evenly arranged inside the annular jet component (12); the air outlets of the horizontal air outlet pipes (1201) are directly opposite to the dust filter bag (1); the plurality of horizontal air outlet pipes (1201) are also commonly connected to an air supply pipeline (14); the upstream of the air supply pipeline (14) is connected to an air supply mechanism (13); and the upper and lower side ends of the annular jet component (12) are fixedly mounted with electromagnetic rings (1202) that cooperate with the magnetic attraction portion (802).

2. A cement pulverizing coal dust filter bag self-cleaning assembly according to claim 1, characterized in that: Each mounting surface of the multi-faceted mounting block (402) is provided with a first connecting slot (4021); a side of the movable plug-in unit (6) facing the multi-faceted mounting block (402) is provided with a second connecting slot (603) aligned with the first connecting slot (4021); one end of the tension spring (5) is fixedly mounted at the position of the first connecting slot (4021); and the other end of the tension spring (5) is fixedly mounted at the position of the second connecting slot (603).

3. A cement pulverizing coal dust filter bag self-cleaning assembly according to claim 1, characterized in that: Each mounting surface of the multi-faceted mounting block (402) is provided with two annular side threaded holes (4022); the fixed housing (701) is provided with mounting side plates (702) located at the upper and lower sides of the open mounting cavity (703); the mounting side plates (702) are provided with side plate through holes (704) matching the annular side threaded holes (4022); and second fixing bolts (10) are installed at the positions of the side plate through holes (704) and the annular side threaded holes (4022).

4. A cement pulverizing coal dust filter bag self-cleaning assembly according to claim 1, characterized in that: The movable plug-in unit (6) comprises a movable plug-in plate (601), vertical protrusions (602) located at upper and lower sides of one side of the movable plug-in plate (601), and a transverse protrusion (604) located at the other side of the movable plug-in plate (601), and the C-shaped plastic part (801) is provided with a horizontal slot (803) that matches the transverse protrusion (604); The vertical protrusion (602) is slidably mounted in the open mounting cavity (703), and the movable plug plate (601) is movable through the guide slot (705).

5. A cement pulverizing coal dust removal filter bag self-cleaning assembly according to claim 4, characterized in that: An outer threaded hole (605) is provided in the middle of the side end surface where the transverse protrusion (604) is located, and the C-shaped plastic part (801) is provided with a through hole (804) that matches the outer threaded hole (605), and a first fixing bolt (9) is installed at the positions of the through hole (804) and the outer threaded hole (605).

6. A cement pulverizing coal dust removal filter bag self-cleaning assembly according to claim 4, characterized in that: Assuming that the vertical dimension of the open installation cavity (703) is La, the vertical dimension of the guide groove (705) is Lc, the vertical span dimension of the two vertical protrusions (602) of the movable plug-in unit (6) is Le, and the vertical dimension of the movable plug-in unit (601) is Ls, then La>Le>Lc>Ls.

7. A cement pulverizing coal dust filter bag self-cleaning assembly according to claim 1, characterized in that: A guide tube (1203) is fixedly welded to the outer ring side of the electromagnetic ring (1202), the guide tube (1203) comprises a vertical guide groove (1204), and the fixed platform (2) is provided with an auxiliary guide rod (15) passing through the vertical guide groove (1204).

8. A self-cleaning method for cement pulverizing coal dust filter bag, characterized in that: A cement coal grinding dust filter bag self-cleaning assembly according to any one of claims 1 to 7, comprising the following contents: S1. After the dust filter bag (1) has been used for a long time, the control system detects that the air flow resistance to the dust filter bag (1) increases; S2. The first retractor (4) and the second retractor (11) are started, and the first retractor (4) drives the combined structure of the movable plug-in (6), the fixed sleeve (7), and the C-shaped magnetic member (8) to move down a system preset distance value; The distance value preset by the system is the same as the distance between the two electromagnetic rings (1202) in the vertical direction; S3. The second retractor (11) drives the annular jet member (12) to move synchronously, and the electromagnetic ring (1202) is horizontally aligned with the magnetic attraction portion (802) of the C-shaped magnetic attraction member (8); S4. The electromagnetic ring (1202) is energized at a power-on frequency f preset by the system, and each time the power-on lasts for a period of time T, the magnetic attraction portion (802) of the C-shaped magnetic attraction member (8) completes a magnetic attraction action and strikes the inner surface of the dust filter bag (1) once; When the electromagnetic ring (1202) remains energized, the magnetic attraction portion of the C-shaped magnetic attraction member (8) moves toward the electromagnetic ring; when the electromagnetic ring (1202) is de-energized, the movable plug-in (6) is subjected to the pulling force of the tension spring (5), and the magnetic attraction portion (802) of the C-shaped magnetic attraction member (8) moves backward, and the cycle repeats, with the magnetic attraction portion (802) repeatedly striking the inner surface of the dust filter bag (1); S5. When the electromagnetic ring (1202) is energized, the air supply mechanism (13) is started, and the air supply mechanism (13) supplies air to the horizontal air outlet pipe (1201) inside the annular jet element (12) through the air supply pipeline (14), and the horizontal air outlet pipe (1201) blows air in the reverse direction to the dust filter bag (1); S6. With the magnetic attraction part (802) periodically impacting the dust filter bag (1) and the horizontal air outlet pipe (1201) blowing air in the opposite direction to the dust filter bag (1), the blockage on the inner surface of the dust filter bag (1) is separated from the dust filter bag (1); S7. The first telescopic device (4) drives the combined structure of the movable plug-in unit (6), the fixed sleeve (7), and the C-shaped magnetic element (8) to move downward by a distance preset by the system, and repeats the steps S3 to S6 until the cleaning of the entire inner surface of the dust filter bag (1) is completed or the air intake pipe detects that the air flow resistance to the dust filter bag (1) is lower than the air flow reference resistance preset by the system.

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