A gas box pulse bag type dust collector

Abstract

The application discloses a gas tank pulse bag type dust collector and belongs to the bag type dust collector field. The gas tank pulse bag type dust collector comprises a box body and a support, a fixed plate is installed on the inner wall of the box body and close to the top end, a round hole is arranged in the fixed plate, a filter bag is installed on the bottom end of the inner wall of the round hole, a ring-shaped support is inlaidly installed on the top of the fixed plate, a rotating rod is installed on the top end of the inner wall of the round hole through a bearing, symmetrical impeller blades are sleeved on the surface of the rotating rod, a sling is wound on the surface of the rotating rod, a counterweight disc is installed at the tail end of the sling, a coil spring is installed on the surface close to the impeller blade of one of the bearings, and the movable end of the coil spring is connected with the surface of one end of the rotating rod. When pulse dust removal is used, the high-pressure gas is used for washing, the surface of the filter bag is cleaned, the impeller blades are washed, the sling is reeled in, the position of the lower surface of the filter bag is kept in dynamic stability with the nozzle, and the cleaning and dust removal effect of the filter bag is kept consistent.

Description

Technical Field

[0001] This invention relates to the field of baghouse dust collectors, and more specifically, to a pulse jet baghouse dust collector. Background Technology

[0002] Powdered hydraulic inorganic cementitious material. When mixed with water, it forms a slurry that hardens in air or, even better, in water, and can firmly bind materials such as sand and stone together. It is widely used as a fundamental material in construction projects. During cement production, flue gas is emitted. To ensure a safe atmospheric environment, the flue gas needs to be purified and dust-removed before being released. In this process, a pulse-jet bag filter is used as the equipment for flue gas treatment.

[0003] When using a pulse jet baghouse dust collector, dust accumulates on the filter bags, increasing the resistance to airflow. Therefore, cleaning the filter bag surface is necessary. A common procedure involves opening the solenoid valve to release high-pressure compressed air. This high pressure causes the filter bags to expand rapidly, resulting in impact vibration that shakes the dust adsorbed on the filter bag surface into the dust hopper, thus achieving dust removal. However, for the sake of secure filter bag installation, the pressure of the high-pressure compressed air cannot be too high. Furthermore, the vertical distance between the high-pressure compressed air release point and the bottom of the filter bag results in inconsistent dust removal efficiency at the same pressure, leading to poorer cleaning at the bottom of the filter bag.

[0004] Therefore, we propose a pulse jet bag filter to solve the above problems. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the present invention aims to provide a pulse jet bag filter that utilizes the scouring effect of high-pressure gas during pulse dust removal to simultaneously remove dust from the filter bag surface and scour the impeller blades, thereby driving the suspension cable to rewind. This ensures that the lower part of the filter bag surface maintains a dynamically stable value with respect to the nozzle, thus maintaining a consistent cleaning and dust removal effect on the filter bag.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A pulse jet bag filter includes a housing and a support frame. A fixing plate is installed on the inner wall of the housing near the top. The fixing plate has a circular hole inside. A filter bag is installed at the bottom of the inner wall of the circular hole. A ring-shaped support frame is embedded in the top of the fixing plate. The support frame has a hollow design inside.

[0010] A rotating rod is mounted on the top of the inner wall of the circular hole via a bearing. Symmetrically arranged impeller blades are sleeved on the surface of the rotating rod. A suspension cable is wound around the surface of the rotating rod, and the suspension cable is located in the middle of the two sets of impeller blades. A counterweight plate is installed at the tail end of the suspension cable, and the bottom of the counterweight plate is connected to the inner bottom wall of the filter bag.

[0011] One set of bearings has a coil spring mounted on the surface near the impeller blades, and the movable end of the coil spring is connected to one end of the rotating rod.

[0012] Furthermore, a central air pipe is installed at the center of the inside of the bracket, and the tail end of the central air pipe extends above the impeller blade. An air guide pipe is installed on the inner wall of the bracket, and the two ends of the air guide pipe extend into the interior of the central air pipe and the bracket, respectively. A solenoid valve is installed on the surface of the central air pipe, and a photoelectric sensor is installed at the bottom of the inner wall of the central air pipe. The bottom of the bracket extends to the bottom of the fixing plate, and a nozzle is installed through the bottom of the bracket.

[0013] Furthermore, the diameter of the central air tube is the same as the diameter of the filter bag, and the nozzle is located on the outside of the filter bag.

[0014] Furthermore, an air box is installed on the back of the housing, and a high-pressure air pump is installed inside the air box. The output end of the high-pressure air pump is connected to an air delivery branch pipe, and the air delivery branch pipe is connected to the central air pipe through a branch air pipe. A pulse valve is installed on the surface of the air delivery branch pipe.

[0015] Furthermore, the front of the housing is provided with an air inlet, and an exhaust pipe is installed through the front of the housing. The fixing plate is located between the exhaust pipe and the air inlet.

[0016] Furthermore, a downward-shrinking ash hopper is installed through the bottom of the box, and a downward-sloping discharge hopper is installed through the bottom of one side surface of the ash hopper, with a control valve installed inside the discharge hopper.

[0017] Furthermore, a ladder is installed on one side surface of the enclosure, and a U-shaped safety frame is installed on the side surface of the ladder away from the enclosure.

[0018] Furthermore, a ring is installed on the top surface of the counterweight plate, and the ring is located on the outside of the sling.

[0019] Furthermore, the solenoid valve and the air duct are arranged at intervals, and the photoelectric sensor is electrically connected to the solenoid valve.

[0020] Furthermore, a mesh frame is installed on the inner side of the filter bag, and the mesh frame is made of nylon filaments.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of this invention are:

[0023] (1) The present invention is equipped with an impeller blade, a rotating rod, a sling and a filter bag. When air is delivered through the central air pipe, the downward airflow drives the impeller blade to rotate, which in turn causes the sling to be wound up on the surface of the rotating rod. As the sling is wound up, it causes the counterweight plate and the bottom end of the filter bag connected to the bottom surface of the counterweight plate to move up. By moving up, the lower part of the filter bag gradually moves up, which makes the surface of the filter bag and the outlet position of the nozzle dynamically stable, thus ensuring that the dust removal effect of the air blowing on the surface of the filter bag is consistent.

[0024] (2) The present invention is equipped with a coil spring and a counterweight plate. The coil spring tightens when it rotates with the rotating rod. At this time, the sling is in a coiled and rising state. After the sling is coiled for a period of time, the bottom end of the filter bag moves close to the bottom end of the central air pipe. At this time, the solenoid valve closes and the impeller loses its power source. As a result, the rotating rod is no longer driven by the impeller. Under the action of the coil spring, the rotating rod rotates in the opposite direction and combines with the counterweight plate, so that the sling can be relaxed smoothly, thereby driving the filter bag to return to its original length for the next round of filtration and interception.

[0025] (3) The present invention is equipped with a nozzle and a central air pipe. When the solenoid valve is open, a portion of the gas inside the central air pipe is transferred to the inside of the support through the air guide pipe and then discharged through the nozzle, thereby performing a powerful dust blowing treatment on the surface of the filter bag. Since the surface of the filter bag is blocked by slag and ash, the air permeability of the filter bag is weakened. At this time, the central air pipe delivers gas to the inside of the filter bag, causing the filter bag to expand and thus open the filter holes blocked on the surface of the filter bag, making it easier for the slag and ash inside the filter holes to be discharged.

[0026] (4) The present invention is equipped with a rotating rod, a ring and a photoelectric sensor. As the sling moves upward, the ring moves upward and thus blocks the photoelectric sensor at the bottom of the inner side of the central air pipe. At this time, the photoelectric sensor sends a start signal to the solenoid valve, the solenoid valve closes and the central air pipe closes to stop the air supply, the cleaning of the filter bag is terminated, and the dust removal operation is automatically terminated. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the fixing plate and filter bag structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the central air tube and filter bag structure of the present invention;

[0031] Figure 5This is a schematic diagram of the impeller blades, rotating rod, coil spring, and filter bag mounting structure of the present invention.

[0032] Figure 6 This is a schematic diagram of the impeller blades, suspension cables, and surrounding ring installation structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the cross-sectional structure of the central trachea of ​​the present invention;

[0034] Figure 8 This is a schematic diagram of the sling rising state during air delivery through the central air tube of the present invention.

[0035] Figure 9 This is a schematic diagram showing the state of the sling under the action of the coil spring when the central air tube of the present invention stops supplying air;

[0036] Figure 10 This is a schematic diagram of the filter bag expansion state when the central air tube delivers air according to the present invention.

[0037] Explanation of the labels in the diagram:

[0038] 1. Housing; 2. Ash hopper; 3. Ladder; 4. Air inlet; 5. Safety enclosure; 6. Air box; 7. Air supply branch pipe; 8. Fixing plate; 9. Exhaust pipe; 10. Discharge hopper; 11. Support; 12. Filter bag; 13. Central air pipe; 14. Solenoid valve; 15. Nozzle; 16. Air guide pipe; 17. Impeller blade; 18. Rotating rod; 19. Sling; 20. Coil spring; 21. Enclosure ring; 22. Counterweight plate; 23. Photoelectric sensor. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] Example 1:

[0043] Please see Figures 1-7 A pulse jet bag filter includes a housing 1 and a support 11. A fixing plate 8 is installed on the inner wall of the housing 1 near the top. The fixing plate 8 has a circular hole inside. A filter bag 12 is installed at the bottom of the inner wall of the circular hole. A ring-shaped support 11 is inlaid on the top of the fixing plate 8. The support 11 has a hollow design inside.

[0044] A rotating rod 18 is mounted on the top of the inner wall of the circular hole via a bearing. Symmetrically arranged impeller blades 17 are sleeved on the surface of the rotating rod 18. A suspension cable 19 is wound around the surface of the rotating rod 18, and the suspension cable 19 is located in the middle of the two sets of impeller blades 17. A counterweight plate 22 is installed at the tail end of the suspension cable 19, and the bottom of the counterweight plate 22 is connected to the inner bottom wall of the filter bag 12.

[0045] Specifically, when air is delivered through the central air pipe 13, the downward-rushing airflow drives the impeller blade 17 to rotate, which in turn causes the sling 19 to be wound up on the surface of the rotating rod 18. As the sling 19 is wound up, it causes the bottom end of the counterweight plate 22 and the filter bag 12 connected to the bottom surface of the counterweight plate 22 to move upward. By moving upward, the lower part of the filter bag 12 gradually moves upward, thereby keeping the surface of the filter bag 12 and the outlet position of the nozzle 15 dynamically stable, thus ensuring that the dust removal effect of the air blowing on the surface of the filter bag 12 remains consistent.

[0046] One set of bearings has a coil spring 20 mounted on the surface near the impeller blade 17, and the movable end of the coil spring 20 is connected to one end surface of the rotating rod 18.

[0047] Specifically, the coil spring 20 tightens as it rotates with the rotating rod 18. At this time, the sling 19 is in a coiled and rising state. After the sling 19 has been coiled for a period of time, the bottom end of the filter bag 12 moves closer to the bottom end of the central air pipe 13. At this time, the solenoid valve 14 closes, and the impeller 17 loses its power source. As a result, the rotating rod 18 is no longer driven by the impeller 17. Under the action of the coil spring 20, the rotating rod 18 rotates in the opposite direction and engages with the counterweight plate 22, so that the sling 19 can be relaxed smoothly. This allows the filter bag 12 to return to its original length for the next round of filtration and interception.

[0048] Please see Figure 4 , Figure 7 and Figure 9 A central air pipe 13 is installed at the center of the support 11, and the tail end of the central air pipe 13 extends above the impeller blade 17. An air guide pipe 16 is installed on the inner wall of the support 11, and the two ends of the air guide pipe 16 extend into the interior of the central air pipe 13 and the support 11, respectively. A solenoid valve 14 is installed on the surface of the central air pipe 13. A photoelectric sensor 23 is installed at the bottom of the inner wall of the central air pipe 13. The bottom of the support 11 extends to the bottom of the fixing plate 8, and a nozzle 15 is installed through the bottom of the support 11. The solenoid valve 14 and the air guide pipe 16 are arranged at intervals. The photoelectric sensor 23 is electrically connected to the solenoid valve 14. The diameter of the central air pipe 13 is the same as the diameter of the filter bag 12. The nozzle 15 is located on the outside of the filter bag 12. A ring 21 is installed on the top surface of the counterweight plate 22, and the ring 21 is located on the outside of the sling 19.

[0049] Specifically, when the solenoid valve 14 is open, a portion of the gas inside the central air pipe 13 is transferred to the interior of the support 11 through the air guide pipe 16, and then discharged through the nozzle 15, thereby performing a powerful dust blowing treatment on the surface of the filter bag 12.

[0050] Because the surface of the filter bag 12 is blocked by slag and ash, the air permeability of the filter bag 12 is reduced. At this time, the central air pipe 13 delivers gas to the inside of the filter bag 12, causing the filter bag 12 to expand, thereby opening up the filter holes blocked on the surface of the filter bag 12, making it easier for the slag and ash inside the filter holes to be discharged.

[0051] As the sling 19 moves upward, the ring 21 moves upward, thus blocking the photoelectric sensor 23 at the bottom of the inner side of the central air tube 13. At this time, the photoelectric sensor 23 sends a start signal to the solenoid valve 14, the solenoid valve 14 closes, and the central air tube 13 closes to stop the air supply, and the cleaning of the filter bag 12 is terminated.

[0052] Please see Figure 1 and Figure 2 An air box 6 is installed on the back of the housing 1, and a high-pressure air pump is installed inside the air box 6. The output end of the high-pressure air pump is connected to an air supply branch pipe 7, and the air supply branch pipe 7 is connected to the central air pipe 13 through a branch air pipe. A pulse valve is installed on the surface of the air supply branch pipe 7.

[0053] Specifically, the high-pressure air pump delivers air to the interior of the central air pipe 13 through the air delivery branch pipe 7, providing a power source for subsequent dust removal treatment of the filter bag 12 surface. After the pulse valve is opened, the high-pressure air pump can deliver high-pressure gas into the interior of the central air pipe 13.

[0054] Please see Figure 1The front of the housing 1 is provided with an air inlet 4, and an exhaust pipe 9 is installed through the front of the housing 1. The fixing plate 8 is located between the exhaust pipe 9 and the air inlet 4.

[0055] Specifically, the flue gas intercepted and treated by the filter bag 12 floats above the fixed plate 8, and then the purified gas is discharged through the exhaust pipe 9 to avoid the accumulation of gas inside the box 1.

[0056] Please see Figure 1 The bottom of the box 1 is fitted with a downward-shrinking ash hopper 2, and the bottom of one side surface of the ash hopper 2 is fitted with a downward-sloping discharge hopper 10. A control valve is installed inside the discharge hopper 10.

[0057] Specifically, the ash hopper 2 is used to collect slag and ash, and after the control valve is opened, the slag and ash can be discharged into the ash hopper 10, thereby realizing the centralized treatment of slag and ash.

[0058] Please see Figure 1 A ladder 3 is installed on one side of the box body 1, and a U-shaped safety frame 5 is installed on the side of the ladder 3 away from the box body 1.

[0059] Specifically, the escalator 3 assists operators in climbing to the top of the container 1 for maintenance, while the safety frame 5 provides protection, ensuring safety for operators as they climb the escalator 3.

[0060] The filter bag 12 has a mesh frame installed on its inner side, and the mesh frame is made of nylon filaments.

[0061] Specifically, the nylon mesh frame enhances the mechanical strength of the filter bag 12, thereby giving it better wear resistance and extending its service life.

[0062] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A pulse jet bag filter, comprising a housing (1) and a support (11), characterized in that, A fixing plate (8) is installed on the inner wall of the box (1) near the top. The fixing plate (8) has a round hole inside. A filter bag (12) is installed at the bottom of the inner wall of the round hole. A ring-shaped bracket (11) is inlaid on the top of the fixing plate (8), and the bracket (11) is hollow inside. A rotating rod (18) is mounted on the top of the inner wall of the circular hole via a bearing. Symmetrically arranged impeller blades (17) are sleeved on the surface of the rotating rod (18). A sling (19) is wound around the surface of the rotating rod (18), and the sling (19) is located in the middle of the two sets of impeller blades (17). A counterweight plate (22) is installed at the tail end of the sling (19), and the bottom of the counterweight plate (22) is connected to the inner bottom wall of the filter bag (12). One set of bearings has a coil spring (20) mounted on the surface near the impeller blade (17), and the movable end of the coil spring (20) is connected to one end surface of the rotating rod (18); A central air pipe (13) is installed at the center of the support (11), and the tail end of the central air pipe (13) extends to the top of the impeller (17). An air guide pipe (16) is installed on the inner wall of the support (11), and the two ends of the air guide pipe (16) extend into the interior of the central air pipe (13) and the support (11) respectively. A solenoid valve (14) is installed on the surface of the central air pipe (13). A photoelectric sensor (23) is installed at the bottom of the inner wall of the central air pipe (13). The bottom of the support (11) extends to the bottom of the fixing plate (8), and a nozzle (15) is installed through the bottom of the support (11). The diameter of the central air pipe (13) is the same as the diameter of the filter bag (12), and the nozzle (15) is located on the outside of the filter bag (12). When the solenoid valve (14) is open, a portion of the gas inside the central air tube (13) is transferred to the inside of the support (11) through the air guide tube (16), and then discharged through the nozzle (15), thereby performing a powerful dust blowing treatment on the surface of the filter bag (12). Because the surface of the filter bag (12) is blocked by slag and ash, the air permeability of the filter bag (12) is reduced. At this time, the central air pipe (13) delivers gas to the inside of the filter bag (12), causing the filter bag (12) to start to expand, thereby opening up the filter holes blocked on the surface of the filter bag (12) and facilitating the discharge of the slag and ash blocking the filter holes.

2. The air-box pulse bag filter according to claim 1, characterized in that, An air box (6) is installed on the back of the box (1), and a high-pressure air pump is installed inside the air box (6). The output end of the high-pressure air pump is connected to an air delivery branch pipe (7), and the air delivery branch pipe (7) is connected to the central air pipe (13) through a branch air pipe. A pulse valve is installed on the surface of the air delivery branch pipe (7).

3. The air-box pulse bag filter according to claim 1, characterized in that, The front of the box (1) is provided with an air inlet (4), and an exhaust pipe (9) is installed through the front of the box (1). The fixing plate (8) is located between the exhaust pipe (9) and the air inlet (4).

4. The air-box pulse bag filter according to claim 1, characterized in that, The bottom of the box (1) is fitted with a downward-shrinking ash hopper (2), and the bottom of one side surface of the ash hopper (2) is fitted with a downward-sloping discharge hopper (10), and a control valve is installed inside the discharge hopper (10).

5. A pulse-jet bag filter according to claim 1, characterized in that, A ladder (3) is installed on one side surface of the box (1), and a U-shaped safety frame (5) is installed on the side surface of the ladder (3) away from the box (1).

6. A pulse-jet bag filter according to claim 1, characterized in that, The top surface of the counterweight plate (22) is fitted with a ring (21), and the ring (21) is located outside the sling (19).

7. A pulse-jet bag filter according to claim 1, characterized in that, The solenoid valve (14) and the air duct (16) are arranged at intervals, and the photoelectric sensor (23) is electrically connected to the solenoid valve (14).

8. A pulse-jet bag filter according to claim 1, characterized in that, The filter bag (12) has a mesh frame installed on its inner side, and the mesh frame is made of nylon filament.

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