A filter cartridge flow equalizing device, flow equalizing assembly and compact filter cartridge dust collector

Abstract

The present invention discloses a filter cartridge flow balancing device, a flow balancing assembly, and a compact filter cartridge dust collector. The filter cartridge flow balancing device includes a filter cartridge body, a flow guide cone structure is provided on the surface of the filter cartridge body, the flow balancing assembly includes a filter cartridge flow balancing device and an air intake pressure linkage device, and the compact filter cartridge dust collector includes a housing, the housing is provided with an exhaust section, a filter section, and a dust collection section from top to bottom, an air inlet is provided on the side wall of the housing of the filter section, an air intake pressure linkage device is installed on the inner wall of the housing directly opposite the air inlet, and a filter cartridge flow balancing device and a cylindrical filter are also installed inside the housing of the filter section. The filter cartridge flow balancing device surrounds the cylindrical filter, and a gap is left between it and the inner wall of the housing and the cylindrical filter. The present invention can reduce internal turbulence, make the wind speed on the surface of the filter cartridge uniform, improve filtration efficiency and increase service life, and at the same time effectively solve the problem of dust overflow during backblowing of the filter cartridge.

Description

Technical Field

[0001] The invention relates to a filter cartridge flow balancing device, a flow balancing component and a compact filter cartridge dust collector, belonging to the technical field of air purification. Background Art

[0002] The compact cartridge dust collector uses the cartridge as the filter and has been widely used in laser cutting, welding, drilling, crushing, mixing, conveying and other production processes in mechanical processing, electronics industry, pharmaceutical industry, battery new energy and other industries.

[0003] Industrial dust is primarily generated by mechanical processes such as crushing, screening, conveying, grinding, welding, and blasting solid materials, as well as by combustion, high-temperature melting, and chemical reactions. Industrial dust consists of large particles with the same chemical composition as the original solid material, while industrial dust consists of small particles with chemical properties different from those of the material that generated them. Compact cartridge dust collectors are specifically designed for source control, offering advantages such as compact size, high efficiency, easy maintenance, and low cost. They also offer a wide range of adaptability, allowing for the selection of appropriate filter cartridges for different dust-prone environments.

[0004] The main problems of compact cartridge dust collectors at this stage are:

[0005] 1. In practical applications, compact cartridge dust collectors are limited by size, resulting in poor flow distribution in the internal flow channel, which leads to internal turbulence and poor filter efficiency. There are two factors that cause turbulence:

[0006] (1) The air inlet has poor flow equalization effect. In general industries, equalizer plates are used, and the flow channel cross section can play a certain role. However, circular filter cartridges must have 360° air intake. Due to the unidirectional air intake, the flow velocity on the filter cartridge surface is uneven.

[0007] (2) There is no flow equalization device on the surface of the filter cartridge, and turbulent flow enters the filter cartridge directly.

[0008] 2. In an abrasive dust environment, the airflow containing dust directly washes the filter cartridge, which will cause the filter cartridge to wear and leak after long-term use.

[0009] 3. Back-blowing of filter cartridges for dust cleaning. Due to the high back-blowing air pressure, the raised dust escapes to the surrounding filter cartridges, shortening the service life of the filter cartridges. At the same time, the back-blowing airflow will pass through the air inlet and back into the pipeline, causing backflow in the dust collection channel and affecting the dust collection effect. Summary of the Invention

[0010] The object of the present invention is to provide an air intake air pressure linkage device and a compact cartridge dust collector to overcome the deficiencies of the current prior art.

[0011] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0012] On the one hand, the present invention provides a filter cartridge flow balancing device, which includes a filter cartridge body. The surface of the filter cartridge body is provided with a flow-guiding cone structure. The flow-guiding cone structure includes a conical arc flow-balancing port with an inclined angle arranged on the surface of the filter cartridge body. The conical arc flow-balancing port protrudes from the inner wall of the filter cartridge body, and its inlet is large and the outlet is small.

[0013] Furthermore, the inlet of the cone-shaped arc flow equalizing port is concave in the form of an arc surface and is inclined downward from the inlet to the outlet.

[0014] Furthermore, the filter cartridge body adopts an openable and closable splicing structure.

[0015] On the other hand, the present invention also provides a flow balancing component, which includes the above-mentioned filter cartridge flow balancing device, and also includes an air intake pressure linkage device, the air intake pressure linkage device includes an upper connecting plate and a lower connecting plate, the upper connecting plate is respectively provided with a first upper connecting ear and a second upper connecting ear on both sides, the lower connecting plate is respectively provided with a first lower connecting ear and a second lower connecting ear on both sides, a first wind blade is rotatably connected between the first upper connecting ear and the first lower connecting ear, and a second wind blade is rotatably connected between the second upper connecting ear and the second lower connecting ear.

[0016] Furthermore, the first upper connecting ear and the second upper connecting ear are both arranged to be tilted upward, the first lower connecting ear and the second lower connecting ear are both arranged to be tilted downward, and the lower edges of the first upper connecting ear, the second upper connecting ear, the first lower connecting ear and the second lower connecting ear located at the rear end of the connecting plate are all provided with folded edges bent inward.

[0017] Furthermore, the front ends of the upper connecting plate and the lower connecting plate are provided with mounting portions, and the mounting portions are provided with mounting holes.

[0018] Furthermore, upper and lower connecting parts are provided on the inner sides of the first and second air blades near the air inlet, and the upper and lower connecting parts are rotatably mounted at the connection between the connecting plate and the connecting ear using dustproof bearings.

[0019] On the other hand, the present invention also provides a compact filter cartridge dust collector, comprising a shell, wherein the shell is provided with an exhaust section, a filter section and a dust collecting section from top to bottom, an air inlet is provided on the shell side wall of the filter section, and an air intake wind pressure linkage device as described in the above aspect is installed on the inner wall of the shell opposite to the air inlet. At the same time, a cylindrical filter and a filter cartridge flow balancing device as described in the above aspect are also installed inside the shell of the filter section. The filter cartridge flow balancing device surrounds the cylindrical filter, and a gap is left between it and the inner wall of the shell and the cylindrical filter.

[0020] Furthermore, a dust box is provided in the shell of the dust collecting section, the dust box is placed on a carrying plate, and a sealing strip is provided on the upper part of the dust box, and a lifting and pressure rod device is provided at the bottom of the carrying plate. By rotating the lifting and pressure rod device, the carrying plate is raised and the sealing strip on the top of the dust box is compacted.

[0021] Furthermore, an inspection panel is provided on the top of the exhaust section of the shell, an inspection door is provided on the side wall of the middle and lower filter section of the shell, and a dust cleaning door is provided on the side wall of the bottom dust collecting section of the shell.

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

[0023] (1) The filter cartridge flow equalization device can effectively prevent the erosion and wear of the filter cartridge caused by local turbulence, thereby increasing the service life of the filter cartridge. At the same time, the flow equalization device can be opened and closed to ensure the maintainability of the filter cartridge.

[0024] (2) The outer periphery of the filter cartridge flow equalization device is a conical arc flow equalization port with an inclined angle. The conical structure has a large inlet and a small outlet, which effectively solves the problem of dust overflow during backblowing of the filter cartridge. At the same time, it cooperates with the air inlet air pressure linkage device to prevent the dust-laden air flow from flowing back into the pipeline, causing backflow in the dust collection channel and affecting the dust collection effect at the customer's site.

[0025] (3) The flow equalizing device with a conical arc flow equalizing port with an inclined angle can achieve the functions of flow diversion, flow equalization and wear resistance. Its air guide cone has a certain inclined angle, which can effectively guide the dust accumulated inside into the ash hopper, avoid the ignition and smoldering problems caused by dust accumulation in the dust collecting chamber, and effectively prevent dust accumulation on the upper surface of the cone.

[0026] (4) The air inlet pressure linkage device adopts a double air inlet diffuser form to guide the airflow into the filter cartridge in three dimensions. The air inlet realizes a 360° three-dimensional surround of the filter cartridge flow equalization device, so that the airflow entering from the filter cartridge flow equalization device is evenly dispersed on the filter cartridge surface.

[0027] (5) The air vane of the air inlet pressure linkage device opens to let in air when the equipment is started; when the filter cartridge is back-blown, the air vane closes to prevent the air flow from flowing back into the pipe;

[0028] (6) A flow equalization device is set in the peripheral area of ​​the filter cartridge of the filter cartridge dust collector to achieve the purpose of double-layer flow equalization, reduce internal turbulence, make the wind speed on the surface of the filter cartridge uniform, improve the filtration efficiency and extend the service life;

[0029] (7) A lifting and pressing rod device is provided in the dust collecting section of the cartridge dust collector. By rotating the device, the supporting plate can be lifted up and compacted through the sealing strip on the top of the integrated box, ensuring that no harmful gas leaks out during the use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1This is a schematic diagram of the structure of the filter cartridge flow equalizing device;

[0031] Figure 2 This is a schematic diagram of the structure of the cone arc flow equalizing port of the filter cartridge flow equalizing device;

[0032] Figure 3 This is the main view of the air intake pressure linkage device;

[0033] Figure 4 It is a three-dimensional diagram of the air intake pressure linkage device;

[0034] Figure 5 It is a schematic diagram of the structure of a compact cartridge dust collector;

[0035] Figure 6 This is the front view of the compact cartridge dust collector;

[0036] Figure 7 It is a side view of a compact cartridge dust collector;

[0037] Figure 8 This is a schematic diagram of the interior of the filter section of a compact cartridge dust collector (with the flow equalizer closed);

[0038] Figure 9 This is a schematic diagram of the interior of the filter section of a compact cartridge dust collector (with the flow equalizer turned on);

[0039] Figure 10 This is a schematic diagram of the dust collecting section structure of a compact cartridge dust collector;

[0040] Figure 11 This is a schematic diagram of the lifting and lowering rod structure of the dust collecting section of a compact cartridge dust collector;

[0041] Figure 12 This is a diagram of the lifting and lowering lever device in the open state;

[0042] Figure 13 This is a diagram of the tightening state of the lifting and lowering pressure rod device;

[0043] Figure 14 This is a schematic diagram of the air intake of a compact cartridge dust collector;

[0044] Figure 15 This is a schematic diagram of the distribution between the cartridge flow equalizing device and the cylindrical filter inside the compact cartridge dust collector;

[0045] Figure 16 This is a schematic diagram of the compact cartridge dust collector when backflushing and the air vanes of the air inlet pressure linkage device are closed.

[0046] Marked in the figure: 1-exhaust section, 2-filtration section, 3-dust collection section, 4-fan, 5-air inlet, 6-air inlet pressure linkage device, 601-upper connecting plate, 602-lower connecting plate, 603-first upper connecting ear, 604-second upper connecting ear, 605-first lower connecting ear, 606-second lower connecting ear, 607-first air blade, 608-second air blade, 609-folding edge, 610-dust-proof bearing, 7-filter cartridge flow equalizing device, 8-cylinder filter, 9-dust box, 10-inspection panel, 11-inspection door, 12-cone arc flow equalizing port, 13-bearing plate, 14-sealing strip, 15 lifting and lowering pressure rod device, 16-limiting piece, 17-handle, 18-cam, 19-limiting rod, 20-static pressure area. DETAILED DESCRIPTION

[0047] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Example 1

[0049] like Figure 1 and 2 A filter cartridge flow equalizing device includes a filter cartridge body, the surface of which is provided with a flow-guiding cone structure, the flow-guiding cone structure is composed of a plurality of cone-shaped arc flow-balancing ports 12 with inclined angles distributed on the surface of the filter cartridge body, the cone-shaped arc flow-balancing ports 12 protrude from the inner wall of the filter cartridge body, and its inlet is large and its outlet is small.

[0050] In this embodiment, the inlet of the conical arc flow equalizing port 12 is concave in the form of an arc surface and is inclined downward from the inlet to the outlet.

[0051] In this embodiment, the filter cartridge body adopts an openable and closable splicing structure.

[0052] Example 2

[0053] like Figures 1 to 4 As shown, a flow balancing component includes the filter cartridge flow balancing device described in Example 1, and also includes an air intake pressure linkage device, the air intake pressure linkage device includes an upper connecting plate 601 and a lower connecting plate 602, the upper connecting plate 601 is provided with a first upper connecting ear 603 and a second upper connecting ear 604 on both sides, the lower connecting plate 602 is provided with a first lower connecting ear 605 and a second lower connecting ear 606 on both sides, the first upper connecting ear 603 and the first lower connecting ear 605 are rotatably connected with a first wind vane 607, and the second upper connecting ear 604 and the second lower connecting ear 606 are rotatably connected with a second wind vane 608.

[0054] In this embodiment, the first upper connecting ear 603 and the second upper connecting ear 604 are both arranged to be inclined upward, and the first lower connecting ear 605 and the second lower connecting ear 606 are both arranged to be inclined downward, and the lower edges of the first upper connecting ear 603, the second upper connecting ear 604, the first lower connecting ear 605 and the second lower connecting ear 606 located at the rear end of the connecting plate are all provided with a folded edge 609 bent inward.

[0055] In this embodiment, the front ends of the upper connecting plate 601 and the lower connecting plate 602 are provided with mounting portions, and the mounting portions are provided with mounting holes.

[0056] In this embodiment, upper and lower connecting parts are provided on the inner sides of the first and second air blades 607 and 608 near the air inlet, and the upper and lower connecting parts are rotatably mounted at the connection between the connecting plate and the connecting ear using dustproof bearings 610.

[0057] Example 3

[0058] like Figures 5 to 7 As shown, a compact filter cartridge dust collector comprises a shell, wherein the shell is provided with an exhaust section 1, a filter section 2 and a dust collecting section 3 from top to bottom, an air inlet 5 is provided on the shell side wall of the filter section 2, and the air intake wind pressure linkage device 6 described in Example 2 is installed on the inner wall of the shell opposite to the air inlet 5. At the same time, the filter cartridge flow balancing device 7 and the cylindrical filter 8 described in Example 1 are also installed inside the shell of the filter section. The filter cartridge flow balancing device 7 surrounds the cylindrical filter 8, and a guide cone structure is provided on its surface, and a gap is left between it and the inner wall of the shell and the cylindrical filter 8.

[0059] (1) Exhaust section:

[0060] This section integrates the electrical control box, anechoic chamber, and fan section; the fan section incorporates an anechoic chamber and high-performance centrifugal fan. Its unique air duct design offers high control accuracy, high air volume, high static pressure, low noise, and smooth operation. The electrical control system utilizes high-performance integrated control instruments and ultra-high-precision control equipment, offering high control accuracy and reliability. It supports both local and remote control, and equipment cleaning can be controlled by pressure differential and timing.

[0061] (2) Filtering section:

[0062] This section integrates the cylindrical filter 8, the inspection door 11, the air inlet pressure linkage device 6, the filter cartridge flow equalizing device 7, and the injection system.

[0063] The shell is made of carbon steel welded and sprayed to ensure a bright, smooth and scratch-free surface.

[0064] The cylindrical filter 8 is the primary filter component of the filtration system. Suitable filter cartridges can be selected for various industries, such as machining, electronics, pharmaceuticals, and battery energy, to treat dust-laden exhaust gases, ensuring clean, pollution-free exhaust. An access door 11 provides access to the filter cartridges for maintenance and operation. During normal operation, it remains closed, ensuring a leak-proof system.

[0065] The air inlet pressure linkage device 6 adopts a double air inlet diffuser form to guide the air flow to enter in three dimensions, and cooperates with the internal arc bending area to make the air flow surround the filter cartridge 360 ​​degrees in three dimensions.

[0066] like Figure 1 、 2 , 8 and 9, the filter cartridge flow equalizing device 7 adopts an integrated molding process to realize the guide cone structure, and the overall modular installation is convenient for the removal of the filter cartridge; a cone arc flow equalizing port 12 with an inclined angle is provided on the surface of the device, which can play the role of guiding and equalizing the flow. At the same time, the cone arc flow equalizing port 12 has a large inlet and a small outlet to avoid the overflow of dust from the backblowing of the filter cartridge; the inclined angle cone structure has the function of guiding dust accumulation and preventing dust accumulation problems.

[0067] Preferably, the filter cartridge flow equalizing device 7 is divided into a fixed installation part and an opening and closing disassembly part, which facilitates the removal of the filter cartridge; when the equipment is working, the filter cartridge flow equalizing device is closed in a ring shape, wrapping the filter cartridge; when the filter cartridge is removed for maintenance, it can be opened at a certain angle to facilitate the removal of the filter cartridge;

[0068] The spray system consists of a pressure regulating valve, an air bag, a solenoid valve, and a spray pipe. The cartridge dust collector can achieve high-pressure pulse back-blowing cleaning, thereby improving the filtering effect of the filter element and extending the service life of the filter element.

[0069] (3) Dust collection section:

[0070] like Figures 10 to 13 This section integrates the dust box 9 and the lifting and lowering pressure rod device 15.

[0071] The box body is made of carbon steel welded and sprayed to ensure a bright, smooth and scratch-free surface.

[0072] The dust box 9 is placed on the carrying plate 13, a sealing strip 14 is provided on the upper part of the dust box 9, and a lifting and pressing rod device 15 is provided at the bottom of the carrying plate 13. Through the lifting and pressing rod device 15, the carrying plate can be raised to pass through the top sealing strip 14 for compaction, ensuring that no harmful gas leaks out during the use of the equipment.

[0073] The lifting and lowering pressure rod device includes a handle 17, a cam 18 and a limit rod 19; by rotating the handle 17, the cam 18 rotates, guiding the supporting plate 13 above it to move up and down; when the handle 17 rotates more than 90 degrees, deviating from the vertical line by a certain angle, and rotating into place, one end of the limit rod 19 abuts against the bottom plate, fixing the position to prevent loosening of the pressure.

[0074] The overall modular design of the equipment facilitates the expansion of functional segments and improves application adaptability.

[0075] Working principle of this compact cartridge dust collector:

[0076] (1) Dust removal process: dusty air → negative pressure air intake → air pressure linkage fan open → filter cartridge flow equalization device → filter cartridge → centrifugal fan → positive pressure exhaust → clean air.

[0077] like Figure 14 and 15 Gas enters through the dual air inlets, which diffuse to the left, right, and up and down, guiding the airflow in a three-dimensional manner. The upper and lower connections of the blades utilize dust-free bearings, and the blade bodies are constructed of ultra-thin, high-strength materials, enabling them to sense internal pressure and open and close. When the blades sense the incoming airflow, they open due to the airflow, encircling the housing from both sides. Air then flows through the internal bends, where arc-shaped diversions ensure a 360-degree, three-dimensional airflow around the filter cartridge.

[0078] Incoming air evenly surrounds the filter cartridge and enters the filter's flow balancing device in this area. The flow balancing device is made of wear-resistant material, effectively preventing dust-laden incoming air from eroding and abrading the filter cartridge. The surface of the flow balancing device features numerous evenly distributed, angled, conical arc flow balancing ports. The inlet arcs are stretched from large to small, forming a conical structure that effectively guides airflow. A certain space, defined as a static pressure zone, is left between the flow balancing device and the filter cartridge, ensuring even diffusion of incoming air and avoiding turbulence. Dust is evenly adsorbed on the filter cartridge surface. With continued wind pressure, the collected dust is compacted into a powder cake, ready for backwashing and regeneration.

[0079] (2) Backflush process: compressed air → air storage bag → backflush system → backflush cleaning → dust blowing off → filter cartridge flow equalization device → dust collection box.

[0080] Back-blowing cleaning, high-pressure airflow enters the interior of the filter cartridge from the nozzle, and is back-blown by the reverse airflow. The airflow is from the inside to the outside, and the dust is peeled off from the surface of the filter cartridge. The compacted dust cake falls into the dust collecting box under its own gravity. The fine dust in it will diffuse into the space with the back-blowing airflow, and further diffuse outward. When it encounters the filter cartridge flow equalization device, due to the effect of the cone arc distributed on the surface, the air outlet is difficult, and most of the dust fails to penetrate this area. The dust gathers on the inner surface of the flow equalization device. Since the cone is set at a downward inclination angle, this angle can be set according to different dust repose angle properties to ensure that the dust on the inner surface is smoothly diverted to the ash bucket to avoid dust accumulation; the back-blowing airflow further reaches the air inlet pressure linkage flow equalization device. When the air pressure linkage fan blades sense the overflow airflow, they close the fan blades, such as Figure 16 , to avoid the dust-laden airflow from flowing back into the pipe, causing backflow in the dust collection channel and affecting the dust collection effect at the customer's site.

[0081] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the scope of protection of the present invention in any form. All technical solutions obtained by equivalent substitution, etc., fall within the scope of protection of the present invention. Parts not covered by the present invention are the same as the existing technology or can be implemented using existing technology.

Claims

1. A filter cartridge flow equalizing device, characterized in that: The filter cartridge flow equalizing device includes a filter cartridge body, and a flow guide cone structure is provided on the surface of the filter cartridge body. The flow guide cone structure includes a cone arc flow equalizing port with an inclined angle arranged on the surface of the filter cartridge body. The cone arc flow equalizing port protrudes from the inner wall of the filter cartridge body, and its inlet is large and its outlet is small; the inlet of the cone arc flow equalizing port is concave in a circular arc surface and is inclined downward from the inlet to the outlet.

2. A filter cartridge flow equalizing device according to claim 1, characterized in that: The filter cartridge body adopts an openable and closable splicing structure.

3. A current balancing component, characterized in that: The component includes the filter cartridge flow equalizing device described in any one of claims 1 to 2, and also includes an air intake pressure linkage device, the air intake pressure linkage device includes an upper connecting plate and a lower connecting plate, the upper connecting plate is respectively provided with a first upper connecting ear and a second upper connecting ear on both sides, the lower connecting plate is respectively provided with a first lower connecting ear and a second lower connecting ear on both sides, a first wind vane is rotatably connected between the first upper connecting ear and the first lower connecting ear, and a second wind vane is rotatably connected between the second upper connecting ear and the second lower connecting ear.

4. A current balancing component according to claim 3, characterized in that: The first upper connecting ear and the second upper connecting ear are both arranged to be tilted upward, the first lower connecting ear and the second lower connecting ear are both arranged to be tilted downward, and the lower edges of the first upper connecting ear, the second upper connecting ear, the first lower connecting ear and the second lower connecting ear located at the rear end of the connecting plate are all provided with folded edges bent inward.

5. A current balancing component according to claim 3, characterized in that: The front ends of the upper connecting plate and the lower connecting plate are provided with mounting parts, and the mounting parts are provided with mounting holes.

6. A current balancing component according to claim 3, characterized in that: Upper and lower connecting parts are provided on the inner sides of the first and second air blades near the air inlet, and the upper and lower connecting parts are rotatably mounted at the connection between the connecting plate and the connecting ear by using dustproof bearings.

7. A compact cartridge dust collector, comprising a housing, wherein the housing is provided with an exhaust section, a filtering section and a dust collecting section in order from top to bottom, characterized in that: An air inlet is provided on the side wall of the shell of the filter section, and an air intake pressure linkage device as described in any one of claims 3 to 6 is installed on the inner wall of the shell opposite to the air inlet. At the same time, a cylindrical filter and a filter cartridge flow equalizing device as described in any one of claims 1 to 2 are also installed inside the shell of the filter section. The filter cartridge flow equalizing device surrounds the cylindrical filter, and a gap is left between it and the inner wall of the shell and the cylindrical filter.

8. A compact cartridge dust collector according to claim 7, characterized in that: A dust box is provided in the shell of the dust collecting section, and the dust box is placed on a carrying plate. A sealing strip is provided on the upper part of the dust box, and a lifting and pressing rod device is provided at the bottom of the carrying plate. The lifting and pressing rod device is rotated to raise the carrying plate and thereby compact the sealing strip on the top of the dust box.

9. The compact cartridge dust collector according to claim 7, characterized in that: An inspection panel is provided on the top of the exhaust section of the shell, an inspection door is provided on the side wall of the middle and lower filtering section of the shell, and a dust cleaning door is provided on the side wall of the bottom dust collecting section of the shell.

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