Cloth bag dust removal system for producing potassium hydrogen persulfate compound powder

Abstract

The invention discloses a cloth bag dust removal system for producing potassium hydrogen persulfate compound powder in the technical field of cloth bag dust removal, in the process of drying the potassium hydrogen persulfate powder, a limiting block is used for pressing and fixing a pressing ring, when a filter bag is replaced, a rotating rod is used for triggering the limiting block to move out of a constraint area of the pressing ring, and the pressing ring is pressed out of the limiting block; the limiting groove moves to the outer side of the pressing ring, the downward pressure on the pressing ring is relieved, the telescopic ring elastically extends to drive the pressing ring to move upwards, the telescopic ring can seal the space between the outer side of the pressing ring and the mounting plate, and potassium hydrogen persulfate powder above the mounting plate is thoroughly blocked; the edge of the filter bag is completely covered by the pressing ring, in the process, the opening of the filter bag is always in a sealed state, and air in the filter bag is extruded and still penetrates through the filter bag to complete filtration, so that the situation that the opening of the filter bag is exposed in the air too early due to direct disassembly of the filter bag in a traditional disassembly mode is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bag dust removal, and particularly to a bag dust removal system for producing potassium peroxymonosulfate compound powder. Background Art

[0002] Potassium peroxymonosulfate is a chemical substance with strong oxidizing and corrosive properties, which is widely used in industrial production and disinfection fields. During the production process of potassium peroxymonosulfate compound powder, it is necessary to dry the product, and a large amount of dust containing potassium peroxymonosulfate powder will be generated during this process.

[0003] The prior art usually uses a bag dust removal system to process the potassium peroxymonosulfate powder during the drying process. However, there are serious safety hazards in replacing the filter bag of the traditional bag dust removal system:

[0004] 1. During the replacement process, the opening of the filter bag is directly exposed to the air. When sealing the filter bag, the filter bag is squeezed, resulting in the leakage of dust inside the filter bag (as shown in, F is the holding direction of both hands or the sealing position of the tool); Figure 1 shown, F is the holding direction of both hands or the sealing position of the tool);

[0005] 2. Workers need to operate at close range and are prone to inhaling harmful dust;

[0006] 3. The edge of the opening of the replaced filter bag is prone to attaching dust, increasing the contact risk;

[0007] 4. The replacement operation is complex, and the exposure time of workers in a dangerous environment is prolonged;

[0008] These problems seriously threaten the health and safety of operators, and there is an urgent need for a dust removal system that can safely replace the filter bag. Summary of the Invention

[0009] The purpose of the present invention is to provide a bag dust removal system for producing potassium peroxymonosulfate compound powder to solve the problems raised in the above background art.

[0010] To achieve the above purpose, the present invention provides the following technical solution: A bag dust removal system for producing potassium peroxymonosulfate compound powder, including an air inlet pipe, a filter box, a fan, an exhaust pipe, a mounting plate, and a plurality of filter bags mounted on the mounting plate;

[0011] The upper end of the filter bag is press-fitted on the mounting plate through a pressing ring, and a drawstring is wrapped inside the side wall of the filter bag. Both ends of the drawstring extend below the mounting plate, and the filter bag can be closed by pulling the drawstring.

[0012] An elastic telescopic ring is fixedly installed on the surface of the mounting plate. The pressing ring is installed inside the telescopic ring. The telescopic ring is used to drive the pressing ring to move. On both the left and right sides of the telescopic ring corresponding to the surface of the mounting plate, a rotating rod passing through the mounting plate is rotatably connected. A fan-shaped limiting block is fixedly installed on the surface of the rotating rod. A limiting groove with an inclined surface on one side is opened at the bottom of the limiting block. When the limiting block rotates, it presses the pressing ring through the limiting groove, so that the pressing ring moves downward to press and fix the edge of the filter bag.

[0013] As a further solution of the present invention, a sealing mechanism is provided inside the filter box. The sealing mechanism includes a sliding plate slidably installed inside the filter box. The sliding plate is driven to move by a driving member. A sealing block is fixedly installed at the bottom of the sliding plate. The sealing block is used to block and seal the pressing ring when the filter bag is removed.

[0014] As a further solution of the present invention, a telescopic pushing block is fixedly connected to the bottom of the sliding plate corresponding to the position of the limiting block. The bottom of the pushing block after extending is above the pressing ring. The pushing block is used to push the limiting block to rotate from one side of the limiting block to release the restriction on the pressing ring when the sliding plate moves.

[0015] As a further solution of the present invention, a plurality of folding mechanisms are arranged on the surface of the filter bag at equal angles. The folding mechanism includes a plurality of U-shaped clamping rods installed on the surface of the filter bag and a plurality of connecting rods fixedly connected to the surface of the filter bag. The front and back sides of adjacent two clamping rods are hinged with connecting rods through torsion springs. The torsion springs are used to drive the clamping rods and connecting rods to fold the filter bag to increase the filtering area.

[0016] As a further solution of the present invention, a contraction rope is covered inside the side wall of the filter bag. The contraction rope is below the pulling rope. One end of the contraction rope extends into the side wall of the filter bag. The other end of the contraction rope passes through the filter bag and extends to the outside of the filter bag and is connected to the surface of the clamping rod. The contraction rope is used to pull and contract the position below the opening of the filter bag when the clamping rod and the connecting rod are unfolded.

[0017] As a further solution of the present invention, a telescopic blocking ring is fixedly installed inside the pressing ring. The bottom of the blocking ring fits with the side wall of the filter bag corresponding to the upper side of the contraction rope.

[0018] As a further solution of the present invention, a plurality of fixed teeth are fixedly connected to the bottom of the pressing ring. A plurality of tooth-shaped pressing grooves are opened on the surface of the mounting plate.

[0019] As a further solution of the present invention, the side wall of the filter bag is an inclined conical structure to increase the filtering area of the filter bag.

[0020] As a further solution of the present invention, an annular groove is provided at the bottom of the pressure ring, and the groove is used to accommodate the folded portion of the edge of the filter bag.

[0021] As a further solution of the present invention, the bottom edge of the sealing block is a bevel to improve the sealing fit with the pressure ring.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention uses a limit block to press down and fix the pressure ring during the process of drying potassium persulfate powder. When the filter bag is replaced, the limit block is triggered by the rotating rod to move out of the constraint area of ​​the pressure ring, the limiting groove is moved to the outside of the pressure ring, the downward pressure on the pressure ring is released, and the telescopic ring elastically extends to drive the pressure ring to move upward. The telescopic ring can seal between the outside of the pressure ring and the mounting plate, and the potassium persulfate powder above the mounting plate is completely blocked. When the filter bag opening is contracted and closed by pulling the draw rope, the edge of the filter bag is completely covered by the pressure ring. During this process, the filter bag opening is always in a sealed state, the gas inside the filter bag is squeezed and still passes through the filter bag to complete filtering, so as to avoid the traditional disassembly method in which the filter bag is directly disassembled and the filter bag opening is exposed to the air too early. The air and powder inside the filter bag are diffused from the opening position due to the contraction and extrusion of the filter bag, which causes harm to the health of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the filter bag port being deformed by the closed surface;

[0025] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the present invention after being cut apart;

[0027] Figure 4 It is a structural schematic diagram of the positional relationship between the mounting plate, the filter bag and the sealing block in the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the rotating rod and the limiting block in the present invention;

[0029] Figure 6 It is a structural schematic diagram of the connection relationship between the sliding plate, the sealing block and the pushing block in the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the filter bag after being cut open in the present invention;

[0031] Figure 8 for Figure 7 Schematic diagram of the structure at A in the middle;

[0032] Figure 9Explosion structure schematic diagram of the medium-pressure ring, telescopic ring and blocking ring in the present invention;

[0033] Figure 10 Structure schematic diagram of the filter bag in the present invention;

[0034] Figure 11 Structure schematic diagram of the filter bag after being cut along the pulling rope in the present invention;

[0035] Figure 12 Schematic diagram when the opening of the filter bag is closed by the pulling rope (the dotted line in the figure is the schematic line during the closing process of the filter bag opening);

[0036] Figure 13 Structure schematic diagram of the filter bag after being cut along the winding rope in the present invention;

[0037] Figure 14 For Figure 12 Schematic diagram of the structure at position B in

[0038] Figure 15 Structure schematic diagram of the connection relationship between the clamping rod, connecting rod and contraction rope in the present invention;

[0039] Figure 16 Explosion structure schematic diagram of the clamping rod and the connecting rod in the present invention.

[0040] In the drawings: 1 - air inlet pipe, 2 - filter box, 3 - fan, 4 - exhaust pipe, 5 - mounting plate, 6 - filter bag, 7 - pressure ring, 8 - pulling rope, 9 - sliding plate, 10 - driving member, 11 - sealing block, 12 - telescopic ring, 13 - rotating rod, 14 - limiting block, 15 - limiting groove, 16 - pushing block, 17 - clamping rod, 18 - connecting rod, 19 - torsion spring, 20 - contraction rope, 21 - blocking ring, 22 - fixed tooth, 23 - pressure groove, 24 - groove. Detailed implementation manners

[0041] Please refer to Figures 1-16 , a bag dust removal system for producing potassium peroxymonosulfate compound powder, comprising an air inlet pipe 1, a filter box 2, a fan 3, an exhaust pipe 4, a mounting plate 5 and a plurality of filter bags 6 mounted on the mounting plate 5;

[0042] The upper end of the filter bag 6 is pressed on the mounting plate 5 through a pressure ring 7, a pulling rope 8 is wrapped inside the side wall of the filter bag 6, and both ends of the pulling rope 8 extend below the mounting plate 5, and the filter bag 6 can be closed by pulling the pulling rope 8;

[0043] An elastically retractable telescopic ring 12 is fixedly installed on the surface of the mounting plate 5, and the pressure ring 7 is installed on the inner side of the telescopic ring 12. The telescopic ring 12 is used to drive the pressure ring 7 to move. The left and right sides of the surface of the mounting plate 5 corresponding to the telescopic ring 12 are rotatably connected with a rotating rod 13 that penetrates the mounting plate 5. A fan-shaped limit block 14 is fixedly installed on the surface of the rotating rod 13. A limit groove 15 with an inclined surface on one side is opened at the bottom of the limit block 14. When the limit block 14 rotates, the pressure ring 7 is squeezed through the limit groove 15, so that the pressure ring 7 moves downward to press down and fix the edge of the filter bag 6;

[0044] In the drying process of potassium persulfate, the air inlet pipe 1 is connected to the drying equipment, and the dust-containing air flow is driven by the fan 3 to pass through the air inlet pipe 1 and enter the filter box 2. After the potassium persulfate powder is intercepted by the filter bag 6, the clean gas is discharged from the system through the exhaust pipe 4. When the powder in the filter bag 6 accumulates to the point where it needs to be replaced, the following sealed replacement process is performed:

[0045] Preparation for disassembly: Before disassembly, the edge of the filter bag 6 is fixed by the downward pressure of the limit block 14 through the pressure ring 7. At this time, the telescopic ring 12 is in a contracted state. Then, when disassembly begins, the limit block 14 is triggered by the rotating rod 13 to move out of the restraining area of ​​the pressure ring 7, and the limiting groove 15 moves to the outside of the pressure ring 7, releasing the downward pressure on the pressure ring 7.

[0046] The pressing ring 7 is released: the elastic ring 12 stretches elastically to drive the pressing ring 7 to move upward (i.e. Figure 8 The middle telescopic ring 12 pushes up the pressing ring 7), and the telescopic ring 12 can seal the outer side of the pressing ring 7 and the mounting plate 5, completely blocking the potassium persulfate powder above the mounting plate 5, and preventing the powder from penetrating from the gap between the mounting plate 5 and the outer side of the pressing ring 7 to the edge of the filter bag 6, so that the potassium persulfate adheres to the edge of the filter bag 6, causing harm to the health of the workers, and the pressing ring 7 moves up and away from the edge of the filter bag 6;

[0047] Closing of the filter bag 6: The opening of the filter bag 6 is gradually contracted by pulling the two ends of the draw rope 8. At this time, the edge of the filter bag 6 is gradually pulled out of the bottom of the pressure ring 7 as the draw rope 8 contracts. During this process, the opening of the filter bag 6 is always in a sealed state. The gas inside the filter bag 6 is squeezed and still passes through the filter bag 6 to complete the filtration, thus avoiding the traditional disassembly method in which the filter bag 6 is directly disassembled and the opening of the filter bag 6 is exposed to the air too early. The air and powder inside the filter bag 6 are diffused from the opening position due to the contraction and squeezing of the filter bag 6, which causes harm to the health of workers.

[0048] Blockage protection: see Figure 12 , where v represents the pulling direction of the pull rope. The upper end of the filter bag 6 is completely covered by the pressure ring 7 during the filtration stage. There is no potassium persulfate powder attached to the inner side of the edge of the filter bag 6. The exposed edge portion of the filter bag 6 after the opening is shrunk and closed can be kept clean, further reducing the possibility of workers being exposed to harmful substances.

[0049] During the process of filtering potassium monopersulfate powder, after the pressing ring 7 moves upward above the mounting plate 5, a gap is formed between the two, which may cause the powder above the mounting plate 5 to penetrate into the edge of the filter bag 6. As a further solution of the present invention, a sealing mechanism is provided inside the filter box 2. The sealing mechanism includes a sliding plate 9 slidably mounted inside the filter box 2. The sliding plate 9 is driven to move by a driving member 10. A sealing block 11 is fixedly installed at the bottom of the sliding plate 9. The sealing block 11 is used to block and seal the pressing ring 7 when the filter bag 6 is removed.

[0050] During the process of filtering potassium monopersulfate powder, when the filter bag 6 needs to be disassembled, first, the driving member 10 drives the sliding plate 9 to drive the sealing block 11 to move above the pressing ring 7. Then, the limiting block 14 is triggered to move out of the restraint area of the pressing ring 7 through the rotating rod 13, and the limiting groove 15 moves to the outside of the pressing ring 7, releasing the downward pressure on the pressing ring 7. The pressing ring 7 moves upward and disengages from the edge of the filter bag 6. The sealing block 11 synchronously embeds inside the pressing ring 7 to form a closed space, preventing the remaining powder in the filter box 2 from falling below the mounting plate 5 through the pressing ring 7, affecting the installation and replacement of the filter bag 6 by workers, and causing harm to the health of workers.

[0051] During the process of filtering potassium monopersulfate powder, when replacing the filter bag 6, it is necessary to first move the sliding plate 9 and the sealing block 11, and then rotate the limiting block 14 through the rotating rod 13, and the operation is relatively cumbersome. As a further solution of the present invention, a telescopic pushing block 16 is fixedly connected to the bottom of the sliding plate 9 corresponding to the position of the limiting block 14. The bottom of the pushing block 16 after extending is above the pressing ring 7. The pushing block 16 is used to push the limiting block 14 to rotate from one side to release the restriction on the pressing ring 7 when the sliding plate 9 moves.

[0052] During the process of filtering potassium monopersulfate powder, when replacing the filter bag 6, the driving member 10 drives the sliding plate 9, the sealing block 11 and the pushing block 16 to move synchronously. After the pushing block 16 moves to the position of the limiting block 14 and pushes the limiting block 14 to rotate, the downward pressure restriction on the pressing ring 7 is released. When the limiting block 14 moves out of the restraint area of the pressing ring 7, the sealing block 11 accurately moves above the pressing ring 7. The pressing ring 7 moves upward under the elastic action of the telescopic ring 12. The sealing block 11 embeds inside the pressing ring 7 for sealing. The pushing block 16 is compressed by mechanical action to avoid blocking the upward movement of the pressing ring 7. When disassembling the filter bag 6, there is no need to additionally rotate the limiting block 14, which simplifies the replacement operation, improves the replacement efficiency, avoids workers getting too close to the just-operated filter box 2, and uses the pushing block 16 to trigger the limiting block 14 to release the restriction on the pressing ring 7, so that the pressing ring 7 is released from the restriction and moves upward when the sliding plate 9 moves to a fixed position, ensuring the positioning and sealing of the sealing block 11 and the pressing ring 7, and ensuring zero dust leakage.

[0053] When filtering potassium monopersulfate powder, the inner surface of the filter bag 6 is covered with potassium monopersulfate powder during filtration, and the filtering effect of the filter bag 6 deteriorates. When the filter bag 6 cannot be replaced in time, the potassium monopersulfate powder inside the filter bag 6 gradually accumulates, blocking the bottom of the filter bag 6 and further weakening the filtering effect of the filter bag 6. As a further solution of the present invention, multiple folding mechanisms are arranged on the surface of the filter bag 6 at equal angles. The folding mechanism includes a plurality of U-shaped clamping rods 17 installed on the surface of the filter bag 6 and a plurality of connecting rods 18 fixedly connected to the surface of the filter bag 6. The front and rear sides of two adjacent clamping rods 17 are hinged to the connecting rod 18 through torsion springs 19. The torsion springs 19 are used to drive the clamping rods 17 and the connecting rods 18 to fold the filter bag 6 to increase the filtering area;

[0054] During the process of filtering potassium monopersulfate powder, the potassium monopersulfate powder inside the filter bag 6 gradually accumulates, and the gravity at the bottom of the filter bag 6 gradually increases. When the powder weight reaches the set threshold, the filter bag 6 is pulled downward by the gravity of the powder and unfolds. The clamping rods 17 and the connecting rods 18 are gradually turned and unfolded through the hinge structure, increasing the surface area of the filter bag 6. There is no dust attached to the surface of the unfolded filter bag 6, ensuring a constant effective filtering area and avoiding a reduction in the filtering efficiency caused by the powder completely covering the inside of the filter bag 6. After the potassium monopersulfate powder inside the subsequent filter bag 6 is discharged, the torsion springs 19 drive the clamping rods 17 and the connecting rods 18 to reset and fold, which is beneficial to automatically adjusting the shape of the filter bag 6 according to the powder load, ensuring the filtering effect, reducing the replacement requirement, and reducing the maintenance cost.

[0055] During the process of filtering potassium monopersulfate powder, aiming at the problem that the closing of the drawstring 8 fails due to the accumulation of potassium monopersulfate powder inside the filter bag 6, as a further solution of the present invention, a contraction rope 20 is covered inside the side wall of the filter bag 6. The contraction rope 20 is located below the drawstring 8. One end of the contraction rope 20 extends into the side wall of the filter bag 6, and the other end of the contraction rope 20 passes through the filter bag 6 and extends to the outside of the filter bag 6 and is connected to the surface of the clamping rod 17. The contraction rope 20 is used to pull and contract the lower position of the opening of the filter bag 6 when the clamping rod 17 and the connecting rod 18 are unfolded;

[0056] During the process of filtering potassium monopersulfate powder, when the powder weight inside the filter bag 6 reaches the preset threshold, the folding position of the filter bag 6 is stretched under the action of the gravity of the potassium monopersulfate powder, and the clamping rod 17 and the connecting rod 18 are unfolded from the folded state. When the clamping rod 17 is unfolded, it pulls the contraction rope 20. The contraction rope 20 is embedded in the side wall of the filter bag 6 and is subjected to the pulling force. The side wall of the filter bag 6 will contract towards the center under the traction of the contraction rope 20, reducing the inlet of the filter bag 6. The inlet of the contracted filter bag 6 forms a "funnel effect", guiding the subsequent incoming powder to gather towards the central area, facilitating the subsequent contraction and sealing of the upper opening of the filter bag 6 by the drawstring 8.

[0057] During the process of filtering potassium monopersulfate powder, after the pressing ring 7 moves upward, the edge of the filter bag 6 is not restricted and is easily detached from below the pressing ring 7. As a further solution of the present invention, a telescopic blocking ring 21 is fixedly installed inside the pressing ring 7, and the bottom of the blocking ring 21 fits against the side wall of the filter bag 6 corresponding to the upper part of the contraction rope 20;

[0058] During the process of filtering potassium monopersulfate powder, when the pressing ring 7 moves upward, the blocking ring 21 will elongate under the action of elastic force. The bottom of the blocking ring 21 fits against the inner side of the filter bag 6 and generates a certain downward pressure on the filter bag 6, which is beneficial to restricting the edge of the filter bag 6 and preventing the filter bag 6 from directly moving out of the pressing ring 7 after the pressing ring 7 moves upward. The powder adheres to the edge position of the filter bag 6 and cannot be closed into the filter bag 6 by the pulling rope 8 and is exposed outside the filter bag 6, which is harmful to the health of workers. Moreover, the blocking ring 21 can block the gap between the inner side of the pressing ring 7 and the filter bag 6 after the pressing ring 7 moves upward, preventing the air inside the filter bag 6 and the potassium monopersulfate powder from diffusing to the edge position of the filter bag 6 below the pressing ring 7 during the process of opening and contracting, causing pollution to the edge of the filter bag 6 and affecting the sealing of the potassium monopersulfate powder.

[0059] During the process of filtering potassium monopersulfate powder, the friction between the filter bag 6 and the pressing ring 7 is small. When the potassium monopersulfate powder inside the filter bag 6 increases, the filter bag 6 will be pulled under the action of the gravity of the potassium monopersulfate powder. As a further solution of the present invention, a plurality of fixing teeth 22 are fixedly connected to the bottom of the pressing ring 7, and a plurality of tooth-shaped pressing grooves 23 are formed on the surface of the mounting plate 5;

[0060] During the process of filtering potassium monopersulfate powder, when the pressing ring 7 is pressed downward by the limiting block 14 to press the edge of the filter bag 6, the fixing teeth 22 will press the edge of the filter bag 6 into the pressing groove 23, which is beneficial to making the pressing ring 7 more firmly press and fix the filter bag 6, and avoiding the edge of the filter bag 6 from being pulled and sliding out from below the pressing ring 7 when the potassium monopersulfate powder inside the filter bag 6 increases.

[0061] During the process of filtering potassium monopersulfate powder, under the same conditions, the larger the side wall area of the filter bag 6, the better the filtering effect. As a further solution of the present invention, the side wall of the filter bag 6 is an inclined conical structure to increase the filtering area of the filter bag 6;

[0062] During the process of filtering potassium monopersulfate powder, making the side wall of the filter bag 6 into an inclined cone can increase the side wall area of the filter bag 6 and improve the filtering effect of the filter bag 6.

[0063] During the process of filtering potassium monopersulfate powder, the edge of the cylindrical filter bag 6 cannot be laid flat. The filter bag 6 pressed under the pressing ring 7 will be folded and bulged, which affects the effect of the pressing ring 7 pressing and fixing the filter bag 6. As a further solution of the present invention, an annular groove 24 is formed at the bottom of the pressing ring 7, and the groove 24 is used to accommodate the folded part of the edge of the filter bag 6;

[0064] During the process of filtering potassium monopersulfate powder, when the edge of the filter bag 6 is moved under the pressing ring 7, the folded and bulged part of the edge of the filter bag 6 can move to the position of the groove 24, so that the pressing ring 7 can stably press and fix the filter bag 6.

[0065] During the process of filtering potassium monopersulfate powder, there will be a deviation between the sealing block 11 and the inner side of the pressing ring 7 and they cannot be accurately docked. As a further solution of the present invention, the bottom edge of the sealing block 11 is a bevel to improve the sealing fit with the pressing ring 7;

[0066] During the process of filtering potassium monopersulfate powder, when the sealing block 11 is docked with the pressing ring 7, the bevel at the bottom edge of the sealing block 11 can increase the docking range between the sealing block 11 and the pressing ring 7, ensuring the docking seal between the sealing block 11 and the pressing ring 7.

Claims

1. A bag dust removal system for producing potassium persulfate complex powder, comprising an air inlet pipe (1), a filter box (2), a fan (3), an exhaust pipe (4), a mounting plate (5) and a plurality of filter bags (6) mounted on the mounting plate (5), characterized in that: The upper end of the filter bag (6) is pressed onto the mounting plate (5) via a pressing ring (7); a draw rope (8) is wrapped inside the side wall of the filter bag (6); both ends of the draw rope (8) extend to the bottom of the mounting plate (5); and the filter bag (6) can be folded by pulling the draw rope (8); An elastically retractable telescopic ring (12) is fixedly mounted on the surface of the mounting plate (5), the pressure ring (7) is mounted on the inner side of the telescopic ring (12), the telescopic ring (12) is used to drive the pressure ring (7) to move, the left and right sides of the mounting plate (5) corresponding to the telescopic ring (12) are rotatably connected with a rotating rod (13) penetrating the mounting plate (5), the surface of the rotating rod (13) is fixedly mounted with a fan-shaped limit block (14), the bottom of the limit block (14) is provided with a limit groove (15) with one side being an inclined surface, when the limit block (14) rotates, the pressure ring (7) is squeezed through the limit groove (15), so that the pressure ring (7) moves downward to press down and fix the edge of the filter bag (6).

2. A bag dust removal system for producing potassium persulfate complex powder according to claim 1, characterized in that: A sealing mechanism is provided inside the filter box (2), and the sealing mechanism comprises a sliding plate (9) slidably mounted inside the filter box (2), the sliding plate (9) being driven to move by a driving member (10), and a sealing block (11) being fixedly mounted at the bottom of the sliding plate (9), and the sealing block (11) being used to block and seal the pressure ring (7) when the filter bag (6) is removed.

3. A bag dust removal system for producing potassium persulfate complex powder according to claim 2, characterized in that: A retractable pushing block (16) is fixedly connected to the bottom of the sliding plate (9) at a position corresponding to the limit block (14); the bottom of the pushing block (16) after being extended is located above the pressure ring (7); and the pushing block (16) is used to push the limit block (14) from one side when the sliding plate (9) moves, so that the limit block (14) rotates to release the restriction on the pressure ring (7).

4. A bag dust removal system for producing potassium persulfate complex powder according to claim 1, characterized in that: The surface of the filter bag (6) is provided with a plurality of folding mechanisms arranged at equal angles, the folding mechanisms comprising a plurality of U-shaped clamping rods (17) mounted on the surface of the filter bag (6) and a plurality of connecting rods (18) fixedly connected to the surface of the filter bag (6), the front and rear sides of two adjacent clamping rods (17) are hinged with connecting rods (18) via torsion springs (19), the torsion springs (19) are used to drive the clamping rods (17) and the connecting rods (18) to fold the filter bag (6) to increase the filtering area.

5. A bag dust removal system for producing potassium persulfate complex powder according to claim 4, characterized in that: The inside of the side wall of the filter bag (6) is covered with a retractable rope (20), and the retractable rope (20) is located below the pull rope (8). One end of the retractable rope (20) extends to the inside of the side wall of the filter bag (6), and the other end of the retractable rope (20) passes through the filter bag (6) and extends to the outside of the filter bag (6) and is connected to the surface of the clamping rod (17). The retractable rope (20) is used to pull and retract the lower position of the opening of the filter bag (6) when the clamping rod (17) and the connecting rod (18) are unfolded.

6. A bag dust removal system for producing potassium persulfate complex powder according to claim 5, characterized in that: A retractable blocking ring (21) is fixedly mounted on the inner side of the pressure ring (7), and the bottom of the blocking ring (21) is in contact with the side wall of the filter bag (6) above the corresponding shrinkage rope (20).

7. A bag dust removal system for producing potassium persulfate complex powder according to claim 1, characterized in that: A plurality of fixed teeth (22) are fixedly connected to the bottom of the pressure ring (7), and a plurality of tooth-shaped pressure grooves (23) are formed on the surface of the mounting plate (5).

8. A bag dust removal system for producing potassium persulfate complex powder according to claim 1, characterized in that: The side wall of the filter bag (6) is an inclined conical structure so as to increase the filtering area of ​​the filter bag (6).

9. A bag dust removal system for producing potassium persulfate complex powder according to claim 1, characterized in that: The bottom of the pressure ring (7) is provided with an annular groove (24), and the groove (24) is used to accommodate the folded portion of the edge of the filter bag (6).

10. A bag dust removal system for producing potassium persulfate complex powder according to claim 2, characterized in that: The bottom edge of the sealing block (11) is an inclined surface, thereby improving the sealing fit with the pressure ring (7).

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