Multi-stage filtering dust removal system

Abstract

The utility model relates to the technical field of filtering dust removal, and provides a multi-stage filtering dust removal system which comprises a fixed disc and a bottom plate, a filter cartridge is fixed between the fixed disc and the bottom plate, a back flushing assembly is arranged in the filter cartridge and comprises a main air pipe and an auxiliary air pipe, and the auxiliary air pipe is communicated with a plurality of air nozzles which are distributed at equal intervals in the length direction of the auxiliary air pipe. The air spraying head comprises a barrel, the barrel is communicated with a first spraying head and a second spraying head, the first spraying head is arranged in the direction of the filter cylinder, and the second spraying heads can spray compressed air to drive the auxiliary air pipe to drive the main air pipe to rotate. The utility model has the beneficial effects that when compressed gas is sprayed out through the spray head I and the spray head II at the same time, the spray head I directly blows the inner side of the filter cartridge, and the spray head II can enable the main gas pipe and the auxiliary gas pipe to drive the gas spray head to rotate through the reverse thrust acting force, so that the uniform reverse blowing cleaning on the filter cartridge can be ensured, and the cleaning efficiency is improved. The service time and the filtering effect of the filter cartridge are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of filtration and dust removal, specifically to a multi-stage filtration and dust removal system. Background Technology

[0002] Dust collection and filtration devices are industrial dust removal equipment used for gas purification and dust recovery. They are commonly used in factories with high dust levels, such as wood processing plants, stone factories, and pellet manufacturing plants. Due to the characteristics of dust, filter elements are prone to clogging in dust collection systems. Therefore, reverse-flushing dust collection and filtration devices are often used, which remove dust accumulated on the filter element surface through reverse airflow (backflushing) to maintain filtration quality and efficiency. However, because the filter elements used in general filtration are relatively large in length and area, some areas far from the nozzle may not be completely cleaned during backflushing due to the reduced airflow intensity, thus affecting the overall filtration effect. Utility Model Content

[0003] This invention proposes a multi-stage filtration and dust removal system. When compressed gas is sprayed out simultaneously by nozzle one and nozzle two, nozzle one blows directly onto the inner side of the filter cartridge, while nozzle two can rotate the jet head by using the reverse thrust to drive the main air pipe and the auxiliary air pipe. This ensures uniform backflushing and cleaning of the filter cartridge, improving the service life and filtration effect of the filter cartridge.

[0004] Therefore, the technical solution adopted is as follows:

[0005] A multi-stage filtration dust removal system includes a filter assembly, which comprises a fixed plate and a base plate. A filter cartridge is fixed between the fixed plate and the base plate. The filter cartridge has a backflushing assembly inside. The backflushing assembly includes a main air pipe and a secondary air pipe. The main air pipe is connected to an air storage assembly and is rotatably connected to the base plate. The secondary air pipe has multiple pipes that are evenly arranged around the main air pipe and connected to it. The secondary air pipe is also connected to multiple jet nozzles that are evenly distributed along its length. Each jet nozzle includes a cylinder, and the cylinder is connected to a nozzle one and a nozzle two, respectively. The nozzle one is arranged towards the filter cartridge. The multiple nozzles two can drive the secondary air pipe to rotate by spraying compressed gas.

[0006] A further technical solution includes a primary filter compartment and a secondary filter compartment located at the top of the primary filter compartment and connected thereto. The bottom of the primary filter compartment is fixed with a support, and the top of the secondary filter compartment is detachably fixed with a compartment cover. The filter assembly is located inside the secondary filter compartment, and the primary filter compartment and the secondary filter compartment are respectively connected to an input pipe and an output pipe.

[0007] A further technical solution is that the gas storage component includes a gas storage tank, the gas storage tank is connected to an air compressor, the gas storage tank is connected to several gas delivery pipes through a control valve, and the gas delivery pipes are connected to the main gas pipe.

[0008] A further technical solution is that a partition is fixed inside the secondary filter compartment, and multiple mounting holes are provided on the partition. The filter cartridge passes through the mounting holes and is fixed to the partition by a fixing plate. A gasket is provided between the fixing plate and the partition.

[0009] A further technical solution is that multiple annularly distributed vertical rods one and two are fixed between the base plate and the fixed plate. The diameter of the circle formed by several vertical rods two is smaller than the diameter of the circle formed by vertical rod one. The filter cylinder is located between the gaps of vertical rod one and vertical rod two. Multiple rings are fixed on vertical rod one, which are evenly distributed along its length.

[0010] A further technical solution is that the backflush assembly also includes a rotary joint, which is installed at the connection between the main air pipe and the air supply pipe.

[0011] A further technical solution is that the angle between the first nozzle and the second nozzle is a right angle.

[0012] The working principle and beneficial effects of this application are as follows:

[0013] 1. Compressed gas is supplied to the backflush assembly through the air storage component. The top of the main air pipe is connected to the air supply pipe through a rotating joint, and the bottom of the main air pipe is rotatably connected to the base plate. Therefore, the main air pipe rotates while supplying air to the air supply pipe, so that dust attached to all parts of the filter cartridge can be effectively removed, maintaining good air permeability, making the filtration process stable and efficient, avoiding excessive local dust accumulation, reducing local wear and blockage of the filter cartridge, and reducing the replacement frequency.

[0014] 2. At the same time, when nozzle one and nozzle two on the jet head spray compressed gas simultaneously, nozzle one blows directly onto the inside of the filter cartridge, while nozzle two can use the reverse thrust to drive the jet head to rotate through the main air pipe and the auxiliary air pipe. Nozzle one can spray compressed gas while rotating to form a uniform back-blowing cleaning of the inside of the filter cartridge without the need for additional power, thus reducing the operating and maintenance costs of the equipment. Attached Figure Description

[0015] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a schematic diagram of the overall exploded structure of this application;

[0018] Figure 3 This is a top view of the internal structure of the secondary filter compartment described in this application;

[0019] Figure 4 This is a side view of the gas storage assembly described in this application.

[0020] Figure 5 This is a schematic diagram of the structure of the filtering component described in this application;

[0021] Figure 6 This is a partial structural schematic diagram of the filtering component described in this application;

[0022] Figure 7 This is a schematic diagram of the backflush assembly described in this application;

[0023] Figure 8 This is a schematic diagram of the jet head described in this application.

[0024] In the diagram: 1. Secondary filter compartment; 10. Baffle plate; 2. Primary filter compartment; 3. Support frame; 4. Compartment cover; 5. Inlet pipe; 6. Outlet pipe; 7. Air storage assembly; 71. Air storage tank; 72. Control valve; 73. Air supply pipe; 8. Filter assembly; 81. Fixing plate; 82. Gasket; 83. Filter cartridge; 84. Base plate; 85. Vertical rod one; 86. Vertical rod two; 87. Frame; 9. Backflush assembly; 91. Main air pipe; 92. Rotary joint; 93. Auxiliary air pipe; 94. Jet nozzle; 941. Cylinder body; 942. Nozzle one; 943. Nozzle two. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figures 1-8As shown, a multi-stage filtration dust removal system includes a filter assembly 8. The filter assembly 8 includes a fixed plate 81 and a base plate 84. A filter cartridge 83 is fixed between the fixed plate 81 and the base plate 84. The filter cartridge 83 has a back-blowing assembly 9 inside. The back-blowing assembly 9 includes a main air pipe 91 and a secondary air pipe 93. The main air pipe 91 is connected to an air storage assembly 7. The main air pipe 91 is rotatably connected to the base plate 84. The secondary air pipe 93 has multiple secondary air pipes that are evenly arranged around the main air pipe 91 and connected to it. The secondary air pipe 93 is also connected to multiple nozzles 94 that are evenly distributed along its length. Each nozzle 94 includes a cylinder 941. The cylinder 941 is connected to a nozzle 1 942 and a nozzle 2 943. The nozzle 1 942 is arranged towards the filter cartridge 83. The multiple nozzles 2 943 can drive the secondary air pipe 93 to rotate the main air pipe 91 by spraying compressed gas.

[0027] like Figures 2-3 As shown, it also includes a primary filter compartment 2 and a secondary filter compartment 1 located at the top of the primary filter compartment 2 and connected to it. The bottom of the primary filter compartment 2 is fixed with a bracket 3, and the top of the secondary filter compartment 1 is detachably fixed with a compartment cover 4. The filter assembly 8 is located inside the secondary filter compartment 1. The primary filter compartment 2 and the secondary filter compartment 1 are respectively connected by an input pipe 5 and an output pipe 6. A partition 10 is fixedly installed inside the secondary filter compartment 1, which divides the interior of the secondary filter compartment 1 into upper and lower cavities.

[0028] This dust removal system is mainly used for multi-stage filtration of dust and fine particles. It also features a backflushing function for the filter media, reducing the probability of clogging and minimizing maintenance frequency. In this embodiment, the bottom of the secondary filter chamber 1 is fixed to the primary filter chamber 2. Inside the secondary filter chamber 1, a partition 10 is fixed, dividing the internal space of the secondary filter chamber 1 into upper and lower cavities. The lower cavity is primarily for secondary filtration, while the upper cavity is used to discharge the filtered air. The primary filter chamber 2 is connected to the lower cavity inside the secondary filter chamber 1.

[0029] like Figure 2 As shown, an inlet pipe 5 is installed at the outer end of the primary filter chamber 2. The inlet pipe 5 is connected to an external dust collection device. The dust particles are sucked into the interior of the primary filter chamber 2 by the dust collection device. At this time, larger and heavier dust particles will fall directly to the bottom of the primary filter chamber 2 by their own gravity and be collected. The bottom of the primary filter chamber 2 is also provided with a discharge port to discharge the collected dust particles. At this time, the primary filtration is completed inside the primary filter chamber 2.

[0030] Multiple filter components 8 are installed on the partition 10 inside the secondary filter chamber 1. The filter components 8 are used for secondary filtration. Since the input pipe 5 continuously inputs into the primary filter chamber 2, positive pressure is generated inside the primary filter chamber 2 and the secondary filter chamber 1. The air containing fine dust enters the upper cavity of the secondary filter chamber 1 through the passive filtration of the filter components 8. The rotating output pipe 6 is fixedly installed on the outside of the secondary filter chamber 1 and connects to the upper cavity, so that the air after two filtrations is discharged, thus completing the filtration.

[0031] like Figures 3-4 As shown, an air storage assembly 7 is installed outside the secondary filter chamber 1. The air storage assembly 7 provides compressed gas to the backflush assembly 9. The top of the main air pipe 91 is connected to the air supply pipe 73 through a rotating joint 92, and the bottom of the main air pipe 91 is rotatably connected to the base plate 84. Therefore, the main air pipe 91 can rotate while being connected to the air supply pipe 73 for air supply. When the nozzle 1 942 and nozzle 2 943 on the jet nozzle 94 spray compressed gas at the same time, the nozzle 1 942 blows directly onto the inside of the filter cartridge 83, while the nozzle 2 943 can use the reverse thrust to make the main air pipe 91 and the auxiliary air pipe 93 drive the jet nozzle 94 to rotate. The nozzle 1 942 can spray compressed gas while rotating to form a uniform backflush cleaning of the inside of the filter cartridge 83, thereby improving the backflush cleaning effect of the filter cartridge 83.

[0032] The cover 4, which can be detached and installed on the top of the secondary filter compartment 1 via a snap-fit, facilitates maintenance, while the bracket 3 fixed to the outer end of the primary filter compartment 2 allows the device to be installed on the ground.

[0033] like Figures 2-4 As shown, the air storage assembly 7 includes an air storage tank 71, which is connected to an air compressor. The air storage tank 71 is connected to several air delivery pipes 73 through a control valve 72, and the air delivery pipes 73 are connected to the main air pipe 91.

[0034] In this embodiment, the gas storage component 7 is mainly used to provide compressed gas to the backflush component 9. The gas storage tank 71 is fixed to the outer end of the secondary filter compartment 1. A one-way valve is installed at the bottom of the gas storage tank 71, and then connected to an air compressor, so that the air compressor can continuously fill and compress gas into the gas storage tank 71. At the top of the gas storage tank 71, multiple control valves 72 are fixed. The control valves 72 are solenoid valves, which are automated actuators that use electromagnetic force to control the opening and closing or flow direction of fluids, gases, liquids, etc. The valve is opened and closed by energizing / disconnecting it, and is widely used in industrial automation, gas control equipment, and other fields. A gas delivery pipe 73 is installed on the control valve 72, so that the compressed gas inside the gas storage tank 71 can be output to the gas delivery pipe 73 through the control valve 72. The compressed gas inside the gas delivery pipe 73 is then transmitted to the auxiliary gas pipe 93 through the main gas pipe 91. Multiple backflush components 9 are installed at the outer end of the auxiliary gas pipe 93 to provide compressed gas to the backflush components 9, which can be started by timed control by an external computer.

[0035] As shown in the figure Figures 4-6 As shown, a partition 10 is fixed inside the secondary filter compartment 1. Multiple mounting holes are provided on the partition 10. The filter cartridge 83 passes through the mounting holes and is fixed to the partition 10 via a fixing plate 81. A gasket 82 is provided between the fixing plate 81 and the partition 10. In this embodiment, the filter assembly 8 is mainly used for secondary filtration. The filter cartridge 83 is installed between the base plate 84 and the fixing plate 81. Multiple mounting holes are provided at the outer end of the partition 10. The filter cartridge 83 passes through the mounting holes from top to bottom. A gasket 82 is provided at the bottom of the fixing plate 81 and then fixed to the partition 10 with bolts, i.e., around the mounting holes. The gasket 82 is made of rubber. When the backflushing assembly 9 performs backflushing, the filter assembly 8 is prone to vibration, and the gasket 82 mainly serves as a buffer.

[0036] like Figure 7 As shown, multiple annularly distributed vertical rods 85 and 86 are fixed between the base plate 84 and the fixing plate 81. The diameter of the circle formed by the multiple vertical rods 86 is smaller than the diameter formed by the circle of the vertical rods 85. The filter cylinder 83 is located between the gaps of the vertical rods 85 and 86, so that the filter cylinder 83 can be fixed. At the same time, multiple rings 87 are fixed on the vertical rods 85, which are evenly distributed along their length. The rings 87 also hold the filter cylinder 83 in place. When the backflushing assembly 9 performs backflushing, it can prevent the filter cylinder 83 from undergoing severe deformation and damage, thus improving the protection of the filter cylinder 83.

[0037] In this embodiment, the backflush assembly 9 is installed in the middle of the inside of the filter cartridge 83. The top of the main air pipe 91 is connected to the rotary joint 92, and the top of the rotary joint 92 is connected to the air supply pipe 73. The rotary joint 92 is a mechanical device used to connect two air pipes or liquid pipes and allow relative rotation, ensuring continuous transmission of fluid gas, liquid, etc. in the rotating state. Through the connection of the rotary joint 92, the gas inside the air supply pipe 73 can still be transmitted to the main air pipe 91 when the main air pipe 91 is rotating. The bottom of the main air pipe 91 is rotatably connected to the base plate 84.

[0038] Multiple equidistant auxiliary air pipes 93 are fixedly installed at the outer end of the main air pipe 91. The auxiliary air pipes 93 are connected to the interior of the main air pipe 91. Multiple nozzles 94 are fixed to the outside of the auxiliary air pipes 93. Each nozzle 94 is mainly composed of a cylinder 941, a first nozzle 942, and a second nozzle 943. The cylinder 941 is fixed to the auxiliary air pipes 93, while the first nozzle 942 and the second nozzle 943 are installed at a perpendicular angle to the cylinder 941. Thus, when the main air pipe 91 and the auxiliary air pipes 93 deliver pressure into the cylinder 941... When the compressed gas is applied, nozzle 1 (942) directly sprays the gas onto the inside of filter cartridge 83, performing backflushing to clean the dust adhering to the filter cartridge 83. Simultaneously, nozzle 2 (943) uses the compressed gas to drive the auxiliary air pipe 93, which in turn drives the main air pipe 91 to rotate. Through continuous rotation, nozzle 1 (942) can evenly clean the inside of filter cartridge 83. Due to the limited density of the air jet nozzles 94, this solution achieves good cleaning results while reducing the number of air jet nozzles 94 by performing air jet cleaning simultaneously with rotation. At the same time, the compressed gas sprayed by nozzle 2 (943) also acts on the filter cartridge 83, further enhancing the cleaning effect.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-stage filtration and dust removal system, characterized in that, include: The filter assembly (8) includes a fixed plate (81) and a base plate (84). A filter cartridge (83) is fixed between the fixed plate (81) and the base plate (84). The filter cartridge (83) has a backflush assembly (9) inside. The backflush assembly (9) includes a main air pipe (91) and a secondary air pipe (93). The main air pipe (91) is connected to an air storage assembly (7). The main air pipe (91) is rotatably connected to the base plate (84). The secondary air pipes (93) have multiple and evenly arranged circumferential structures. The main air pipe (91) is connected to the auxiliary air pipe (93) by a number of jet nozzles (94) evenly distributed along its length. Each jet nozzle (94) includes a cylinder (941) and a nozzle one (942) and a nozzle two (943) are connected to the cylinder (941) respectively. The nozzle one (942) is arranged in the direction of the filter cartridge (83). The multiple nozzles two (943) can drive the auxiliary air pipe (93) to rotate the main air pipe (91) by spraying compressed gas.

2. The multi-stage filtration and dust removal system according to claim 1, characterized in that, It also includes a primary filter chamber (2) and a secondary filter chamber (1) located at the top of the primary filter chamber (2) and connected thereto. The bottom of the primary filter chamber (2) is fixed with a bracket (3), and the top of the secondary filter chamber (1) is detachably fixed with a chamber cover (4). The filter assembly (8) is located inside the secondary filter chamber (1). The primary filter chamber (2) and the secondary filter chamber (1) are respectively connected to an input pipe (5) and an output pipe (6).

3. The multi-stage filtration and dust removal system according to claim 1, characterized in that, The gas storage assembly (7) includes a gas storage tank (71), which is connected to an air compressor. The gas storage tank (71) is connected to several gas delivery pipes (73) through a control valve (72), and the gas delivery pipes (73) are connected to the main gas pipe (91).

4. The multi-stage filtration and dust removal system according to claim 2, characterized in that, The secondary filter compartment (1) has a partition (10) fixed inside. The partition (10) has multiple mounting holes. The filter cylinder (83) passes through the mounting holes and is fixed to the partition (10) by a fixing plate (81). A gasket (82) is provided between the fixing plate (81) and the partition (10).

5. The multi-stage filtration and dust removal system according to claim 1, characterized in that, A plurality of annularly distributed vertical rods one (85) and two vertical rods two (86) are fixed between the base plate (84) and the fixed plate (81). The diameter of the circle formed by the several vertical rods two (86) is smaller than the diameter formed by the circle formed by the vertical rod one (85). The filter cylinder (83) is located between the gap between the vertical rod one (85) and the vertical rod two (86). A plurality of rings (87) are fixed on the vertical rod one (85) and are evenly distributed along its length.

6. A multi-stage filtration and dust removal system according to claim 3, characterized in that, The backflush assembly (9) also includes a rotary joint (92) which is installed at the connection between the main air pipe (91) and the air supply pipe (73).

7. The multi-stage filtration and dust removal system according to claim 1, characterized in that, The angle between nozzle one (942) and nozzle two (943) is a right angle.

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