Modularized filter cartridge, filter cartridge dust remover and assembly method of filter cartridge dust remover

Abstract

The invention discloses a modular filter cartridge, a filter cartridge dust remover and an assembly method of the filter cartridge dust remover. The modular filter cartridge comprises a fixed sealing seat, a first modular filter section, a middle modular filter section, a second modular filter section and a bottom sealing plate, a lower end cover of the fixed sealing seat is in sealing connection with an upper end cover of the first modular filtering section; an upper end cover of the bottom sealing plate is connected with a lower end cover of the second modular filtering section in a sealing manner; one or more middle modular filter sections are connected between the lower end cover of the first modular filter section and the upper end cover of the second modular filter section in a sealing manner. The modular filter is composed of a plurality of detachable modular filter sections and can be flexibly combined according to actual requirements, the filter effect is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to a filter cartridge dust collector in the field of industrial dust removal and air filtration, and more particularly to a modular filter cartridge, a filter cartridge dust collector and an assembly method thereof. Background Art

[0002] In the field of industrial dust removal, cartridge dust collectors are widely used due to their large filtering area, low pressure difference, small size, and long service life. Cartridge dust collectors can effectively capture fine particles in the air through the filtering effect of the filter cartridge, especially for particles with a diameter of less than 1μm, the purification efficiency can reach more than 99%. This efficient dust removal performance makes cartridge dust collectors an effective means to control the emission concentration of fine particle pollutants to fully meet national environmental protection standards.

[0003] Normally, traditional filter cartridges are generally cylindrical in structure, and the length can be customized according to design requirements. However, for some extra-long filter cartridges used in filter devices, the maximum length of the long filter cartridges on the market is generally no more than 4 meters due to the limitation of the width of the filter paper. When made into an integral filter cartridge, the production difficulty increases and it is not convenient to transport and install. At the same time, traditional filter cartridge designs often adopt a single structure, which cannot be flexibly adjusted according to actual needs. In addition, if the filter cartridge is partially contaminated, abnormal or damaged, it needs to be replaced as a whole, and the maintenance cost is high.

[0004] To solve the above problems, there are currently several main connection methods:

[0005] The welding connection method usually involves welding the cage support frame of the filter cartridge to the flange to form a single filter cartridge. Then, multiple filter cartridges are connected in series through the flange to form a multi-cartridge filter element. This connection method is simple to operate and cost-effective, but there are some problems in actual use. Since the welding contact surface is small, once the seal fails on the contact surface, the filter cartridge connection is prone to leakage. In addition, the weld connection between the metal strips is also prone to failure, affecting the overall structure of the support layer. Moreover, it can only be disassembled as a whole, and the life is determined by the filter cartridge with the lowest life.

[0006] Flange bolt connection usually involves aligning the filter cartridge with the flange and fixing it with bolts. This installation method is simple and quick to operate and is suitable for equipment of all sizes and working conditions. However, flange bolt connection also has disadvantages. The position of the screw and the position of the flange hole must correspond, and precise positioning and calibration are required before installation. If the position of the screw and the flange hole do not match, it may cause a loose connection or leakage. In addition, flange installation requires the use of fasteners such as bolts and nuts, which may increase certain costs and maintenance difficulties.

[0007] In existing patent applications, such as patent publication number CN 220026413 U, which discloses a snap-on filter cartridge patent, the quick-release connection method uses a specially designed snap-on locking mechanism, making the installation and removal of the filter cartridge very simple and quick. This installation method can greatly shorten the time for replacing the filter cartridge and improve the operating efficiency of the equipment. However, the quick-release connection method also has disadvantages. Special tools or equipment are required for installation and removal, which may not be suitable for some small or space-constrained equipment. In addition, the stability and reliability of the quick-release mechanism are also factors that need to be considered.

[0008] Insertion connection usually does not require the use of additional fasteners or tools, and only requires the filter cartridge to be inserted into the device. The advantage is that it is simple and convenient to install and is suitable for various types of filter cartridges. However, there is a disadvantage that when replacing the filter cartridge, the entire filter cartridge holder needs to be removed from the filter cartridge dust collector, making the replacement process relatively cumbersome. In addition, improper installation or inappropriate filter cartridge size may cause leakage or affect the filtration effect.

[0009] The pull-out connection method uses a special pull-out device to install and remove the filter cartridge, which greatly simplifies the replacement process. The advantage is that it is very convenient to replace the filter cartridge without removing the entire filter cartridge holder from the filter cartridge dust collector. However, the disadvantage is that a special pull-out device is required, which may increase the cost of the equipment. In addition, if the pull-out device fails or is damaged, it may affect the replacement of the filter cartridge and the normal operation of the equipment.

[0010] The above filter cartridges have certain disadvantages to a greater or lesser extent, which limits the use of the filter cartridges. In view of the above problems, it is necessary to develop a new type of modular filter cartridge to meet the needs of different application scenarios. Summary of the invention

[0011] In view of the defects existing in the prior art, the purpose of the present invention is to provide a modular filter cartridge, a filter cartridge dust collector and an assembly method thereof, which can quickly disassemble and replace the filter cartridge at the locally damaged part without the aid of a pulling device and without being restricted by space, thereby solving the problem of local replacement of the filter cartridge. By combining multiple detachable modular filter segments, flexible combination and replacement of the filter cartridge can be achieved, thereby improving the filtering effect and reducing maintenance costs.

[0012] To achieve the above object, the present invention adopts the following technical solution:

[0013] A first aspect of the present invention provides a modular filter cartridge, comprising a fixed sealing seat, a bottom sealing plate, and one or more modular filter segments disposed between the fixed sealing seat and the bottom sealing plate;

[0014] The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the modular filter section;

[0015] The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the modular filtering section.

[0016] Preferably, the plurality of modular filter segments include a first modular filter segment and a second modular filter segment;

[0017] The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the first modular filter section;

[0018] The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the second modular filter section;

[0019] The lower end cap of the first modular filter segment and the upper end cap of the second modular filter segment are sealedly connected.

[0020] Preferably, the plurality of modular filter segments include a first modular filter segment, an intermediate modular filter segment and a second modular filter segment;

[0021] The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the first modular filter section;

[0022] The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the second modular filter section;

[0023] The lower end cap of the first modular filter segment is sealed to the upper end cap of the middle modular filter segment, and the lower end cap of the middle modular filter segment is sealed to the upper end cap of the second modular filter segment.

[0024] Preferably, the plurality of modular filter segments include a first modular filter segment, a plurality of sequentially connected intermediate modular filter segments, and a second modular filter segment;

[0025] The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the first modular filter section;

[0026] The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the second modular filter section;

[0027] The lower end cap of the first modular filter segment is sealed to the upper end cap of the uppermost intermediate modular filter segment, and the lower end cap of the lowermost intermediate modular filter segment is sealed to the upper end cap of the second modular filter segment.

[0028] Preferably, the upper surface of the upper end cover is provided with an anti-loosening concave point, a sealing groove and a convex thread connection port;

[0029] The upper end cover is configured as a circular structure;

[0030] The convex thread connection port is arranged at the center of the circle of the upper end cover;

[0031] The sealing groove is arranged at the periphery of the male thread connection port and is in a circular ring structure around the outer circle of the male thread connection port;

[0032] The anti-loosening recesses are provided in plurality, are arranged at the periphery of the sealing recess, and are evenly arranged near the edge of the upper end cover.

[0033] Preferably, the lower surface of the lower end cover is provided with an anti-loosening convex point, a sealing convexity and a concave threaded connection port;

[0034] The lower end cover is configured as a circular structure;

[0035] The female thread connection port is arranged at the center of the circle of the lower end cover;

[0036] The sealing protrusion is arranged on the periphery of the female thread connection port and is in a circular ring structure around the outer circle of the female thread connection port, and is adapted to the sealing groove;

[0037] The anti-loosening convex points are provided in plurality, are arranged on the periphery of the sealing protrusion, are evenly arranged near the edge of the lower end cover, and are matched with the anti-loosening concave points.

[0038] Preferably, the sealing groove and the sealing protrusion are configured as a V-shaped structure or a U-shaped structure that cooperate with each other;

[0039] The notch angles of the sealing groove and the sealing protrusion are between 30° and 75°.

[0040] Preferably, the fixed sealing seat, the bottom sealing plate, the upper end cover and the lower end cover are all made of one or a combination of PET, ABS, PMMA, PA, PC, POM, PP, PS engineering plastic materials.

[0041] Preferably, the contact connection surfaces between the upper end cover and the lower end cover are both configured to be inwardly concave, and the inward concave inclination angle is between 1° and 30°.

[0042] Preferably, a circular air outlet hole is provided at the center of each of the male thread connection port and the female thread connection port.

[0043] Preferably, the wall thickness of the air outlet hole is ≥1 mm;

[0044] The length of the air outlet through hole is greater than or equal to 5 times the pitch of the male thread connection port / the female thread connection port.

[0045] Preferably, a positioning hole is further provided on the upper surface of the upper end cover near the circumferential edge;

[0046] A locking pin matching the positioning hole is also provided on the lower surface of the lower end cover near the circumferential edge; or

[0047] A positioning hole is also provided on the lower surface of the lower end cover near the circumferential edge;

[0048] A locking pin matching the positioning hole is also provided on the upper surface of the upper end cover near the circumferential edge.

[0049] Preferably, the positioning holes and the locking latches are provided with one or more sets.

[0050] The second aspect of the present invention provides a filter cartridge dust collector, comprising the modular filter cartridge provided by the first aspect of the present invention;

[0051] The upper end cover of the fixed sealing seat is fixedly connected to the flower plate of the filter cartridge dust collector.

[0052] The third aspect of the present invention provides an assembly method of the modular filter cartridge provided in the second aspect of the present invention:

[0053] The upper end cover of the fixed sealing seat is fixedly connected to the flower plate of the filter cartridge dust collector, the concave threaded connection port on the lower end cover of the fixed sealing seat is aligned with the thread of the convex threaded connection port on the upper end cover of the first modular filter segment, and the upper end cover of the first modular filter segment is pressed into the fixed sealing seat by rotating the first modular filter segment clockwise to tighten it;

[0054] Rotate the first modular filter segment until the first modular filter segment cannot rotate counterclockwise, at which time, the sealing groove and the anti-loosening concave point on the upper end cover of the first modular filter segment and the sealing protrusion and the anti-loosening protrusion on the lower end cover of the fixed sealing seat are sealed and locked;

[0055] Similarly, the first modular filter segment and the middle modular filter segment, the middle modular filter segment and the middle modular filter segment, the middle modular filter segment and the second modular filter segment, and the second modular filter segment and the bottom sealing plate are sequentially connected in the above manner to complete the overall assembly of the modular filter cartridge;

[0056] During the process of disassembling the modular filter cartridge, a disassembly tool containing a conical insert is used to insert the connecting end face between the upper end cover and the lower end cover along the connecting edge of the gap between the upper end cover and the lower end cover. The disassembly tool is inserted and raised from both left sides at the same time, so that the gap between the connecting end faces is greater than 0.5 mm. The first modular filter segment / the middle modular filter segment / the second modular filter segment are rotated counterclockwise to completely detach the modular filter cartridge, thereby completing the disassembly of the modular filter cartridge.

[0057] The modular filter cartridge, filter cartridge dust collector and assembly method thereof provided by the present invention have the following beneficial effects:

[0058] 1) The modular filter cartridge of the present invention is based on modular design. By combining filter cartridges of different specifications and functions, the length of the filter cartridge can be flexibly adjusted according to actual needs, and dust removal devices of different sizes can be adapted to achieve efficient and flexible filtering effects. Secondly, modular filter cartridge technology has significant advantages. Due to the modular design, it is convenient to disassemble and replace the contaminated modular filter segment, thereby improving the maintainability and scalability of the equipment;

[0059] 2) The modular filter cartridge of the present invention adopts a filter cartridge body made of high-efficiency filter material, wherein the high-efficiency filter material can be modified cellulose paper, polyester non-woven filter material and non-woven membrane filter material, etc. PTFE membrane filter material is preferred to achieve a discharge effect of <5mg / Nm 3 The maximum filtration accuracy is 0.3-0.5μm, the filtration efficiency is ≥99.998%, and in a 2-5kg spraying environment, after 10,000 consecutive sprayings, the filtration efficiency retention rate exceeds 95%. It has good filtration performance and can effectively remove fine dust and particulate matter in the air to ensure air quality and clean production environment;

[0060] 3) The modular filter cartridge of the present invention also has the advantages of large air volume, low pressure loss, and low noise, and can meet the needs of different industrial production scenarios. In addition, the modular filter cartridge is provided with mutually matching sealing grooves and sealing protrusions through the connecting end cap to ensure that the connection between the modular filter sections is tight and leak-free. This design not only ensures the sealing performance of the filter cartridge, but also provides an additional limiting function to prevent the filter cartridge from being misplaced or falling off during use, and achieves the stability of the connection under high pressure or vibration environment;

[0061] 4) The assembly method of the present invention ensures that the modular filter segment end face cannot be reversely rotated and loosened after being locked to ensure sealing. After removing the locking pin that plays a positioning role, thin inserts are inserted into the connection end faces on both sides at the same time and the cross-sectional gap is raised to be greater than 0.5mm. Then the cylinder can be reversely rotated and separated to achieve rapid disassembly. This design makes the disassembly and assembly of the filter cartridge very simple and can be flexibly adjusted according to actual needs. When the filter cartridge is partially contaminated, abnormal or damaged, it can be partially replaced without the need for overall replacement, making maintenance more convenient and quick, and reducing labor intensity and maintenance costs.

[0062] In summary, the present invention has the advantages of simple structure, convenient operation, good filtering effect and low maintenance cost. With the continuous development of technology and the continuous expansion of application fields, modular filter cartridge technology will play a more important role in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a schematic diagram of the structure of the modular filter cartridge of the present invention when it has a plurality of modular filter segments;

[0064] Figure 2 It is a schematic diagram of the structure of the first modular filter segment / the middle modular filter segment / the second modular filter segment in the modular filter cartridge of the present invention;

[0065] Figure 3 Schematic diagram of the structure of the lower end cover of the modular filter cartridge of the present invention, (a) is a front view, (b) is a bottom view;

[0066] Figure 4 Schematic diagram of the structure of the upper end cover in the modular filter cartridge of the present invention, (a) is a front view, (b) is a bottom view;

[0067] Figure 5 Schematic diagram of the structure of the fixed sealing seat in the modular filter cartridge of the present invention, (a) is a front view, (b) is a bottom view;

[0068] Figure 6 Schematic diagram of the structure of the bottom sealing plate in the modular filter cartridge of the present invention, (a) is a front view, (b) is a bottom view;

[0069] Figure 7 It is a schematic diagram of the cooperation between the positioning hole and the locking pin in the modular filter cartridge of the present invention. DETAILED DESCRIPTION

[0070] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0071] The present invention provides a modular filter cartridge, comprising a fixed sealing seat, a bottom sealing plate, and one or more modular filter sections disposed between the fixed sealing seat and the bottom sealing plate;

[0072] The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the modular filter section;

[0073] The upper end cover of the bottom sealing plate is sealed and connected to the lower end cover of the modular filter section.

[0074] In a specific embodiment, when a plurality of modular filter segments are provided in the modular filter cartridge of the present invention, the plurality of modular filter segments include a first modular filter segment and a second modular filter segment;

[0075] The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the first modular filter section;

[0076] The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the second modular filter section;

[0077] The lower end cap of the first modular filter segment is sealed to the upper end cap of the second modular filter segment.

[0078] In a specific embodiment, when a plurality of modular filter segments are provided in the modular filter cartridge of the present invention, the plurality of modular filter segments include a first modular filter segment, an intermediate modular filter segment, and a second modular filter segment;

[0079] The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the first modular filter section;

[0080] The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the second modular filter section;

[0081] The lower end cap of the first modular filter segment is sealed to the upper end cap of the middle modular filter segment, and the lower end cap of the middle modular filter segment is sealed to the upper end cap of the second modular filter segment.

[0082] Combination Figure 1 and Figure 2 As shown, in a specific embodiment, when multiple modular filter segments are provided in the modular filter cartridge of the present invention, the multiple modular filter segments include a fixed sealing seat 1, a first modular filter segment 2, an intermediate modular filter segment 3, a second modular filter segment 4 and a bottom sealing plate 5.

[0083] The lower end cover of the fixed sealing seat 1 is sealedly connected to the upper end cover of the first modular filter section 2 .

[0084] The upper end cover of the bottom sealing plate 5 is sealedly connected to the lower end cover of the second modular filter section 4 .

[0085] The lower end cover of the first modular filter segment 2 is sealed to the upper end cover of the middle modular filter segment 3 , and the lower end cover of the middle modular filter segment 3 is sealed to the upper end cover of the second modular filter segment 4 .

[0086] Alternatively, according to on-site needs, multiple intermediate modular filter segments 3 can be assembled in sequence, and the upper end cover of the top intermediate modular filter segment 3 is sealedly connected to the lower end cover of the first modular filter segment 2, and the lower end cover of the bottom intermediate modular filter segment 3 is sealedly connected to the upper end cover of the second modular filter segment 4, to form an arbitrarily expandable modular filter cartridge, so that the length of the filter cartridge can be flexibly adjusted according to actual needs, without the need to customize a filter cartridge of a specific length.

[0087] Combination Figures 3 to 6 As shown, the upper surface of the upper end cover 6 of the first modular filter segment 2 / the middle modular filter segment 3 / the second modular filter segment 4 / the bottom sealing plate 5 is provided with anti-loosening concave points 13, a sealing groove 11 and a convex threaded connection port 9.

[0088] The upper end cover 6 is configured as a circular structure.

[0089] The male thread connection port 9 is arranged at the center of the upper end cover 6 .

[0090] The sealing groove 11 is arranged at the periphery of the male thread connection port 9 and is in a circular ring structure around the outer circle of the male thread connection port 9 .

[0091] There are a plurality of anti-loosening recesses 13 disposed at the periphery of the sealing groove and evenly arranged around the circumference of the upper end cover 6 near the edge thereof.

[0092] The lower surface of the lower end cover 7 of the fixed sealing seat 1 / first modular filter segment 2 / middle modular filter segment 3 / second modular filter segment 4 is provided with an anti-loosening protrusion 14, a sealing protrusion 12 and a female threaded connection port 10.

[0093] The lower end cover 7 is configured as a circular structure.

[0094] The female thread connection port 10 is arranged at the center of the lower end cover 7 .

[0095] The sealing protrusion 12 is arranged on the periphery of the female threaded connection port 10 and is in a circular ring structure around the outer circle of the female threaded connection port 10 , and is matched with the sealing groove 11 .

[0096] A plurality of anti-loosening protrusions 14 are provided, which are arranged on the periphery of the sealing protrusion 12 and are evenly arranged around the circumference of the lower end cover 7 near the edge thereof, and are matched with the anti-loosening concave points 13 .

[0097] The number and position of the anti-loosening protrusions 14 are the same as those of the anti-loosening concave points 13, which are 4 to 200 in number and have various shapes, including circular, elliptical, triangular, square, pentagonal and plum blossom shapes, etc., which not only ensure the sealing performance between the modular filter segments, but also ensure the stability of the connection of the modular filter cartridge of the present invention under high pressure or vibration environment.

[0098] A positioning hole 15 is also provided on the upper surface of the upper end cover 6 near the circumferential edge.

[0099] A locking latch 16 matching the positioning hole 15 is also provided on the lower surface of the lower end cover 7 near the circumferential edge. Alternatively, the positioning hole 15 and the locking latch 16 are provided at interchangeable positions, that is:

[0100] A positioning hole 15 is also provided on the lower surface of the lower end cover 7 near the circumferential edge.

[0101] A locking pin 16 matching the positioning hole 15 is also provided on the upper surface of the upper end cover 6 near the circumferential edge.

[0102] The positioning holes 15 and the locking pins 16 may be provided in one set or in multiple sets according to actual conditions.

[0103] The sealing groove 11 and the sealing protrusion 12 are arranged to be a mutually matching V-shaped structure or U-shaped structure, and the notch angle is between 30° and 75°, which not only enhances the sealing of the connection, but also provides an additional limiting function to prevent the modular filter cartridge of the present invention from being misplaced or falling off during use.

[0104] The fixed sealing seat 1, the bottom sealing plate 5, the upper end cover 6 and the lower end cover 7 can all be made of one or a combination of PET, ABS, PMMA, PA, PC, POM, PP, PS engineering plastic materials. The selection of these materials not only ensures the convenience of production and processing, but also meets the design requirements of sealing.

[0105] The contact connection surfaces between the upper end cover 6 and the lower end cover 7 are both arranged to be inwardly concave, and the inwardly concave inclination angle α is between 1° and 30°.

[0106] The contact connection surface between the upper end cover 6 and the lower end cover 7 is also connected by an integral thread between the male thread connection port 9 and the female thread connection port 10, using an integrally cast trapezoidal thread with the same rotation direction. This connection method has the advantages of simple structure, reliable connection, and easy disassembly.

[0107] A circular air outlet hole is provided at the center of the male threaded connection port 9 and the female threaded connection port 10. The wall thickness of the air outlet hole is ≥1mm, and the length of the air outlet hole is greater than or equal to 5 times the pitch of the male threaded connection port 9 / female threaded connection port 10, ensuring the strength and stability of the connection.

[0108] The locking rear end face clearance of the integrated threaded connection between the modular filter segments of the present invention is ≤0.2 mm, and such a design further increases the overall sealing performance of the modular filter cartridge system of the present invention.

[0109] The diameter of each modular filter segment in the present invention ranges from 100 mm to 400 mm, which can meet the needs of different application scenarios.

[0110] The present invention further provides a filter cartridge dust collector, comprising the modular filter cartridge of the present invention, wherein the upper end cover of the fixed sealing seat 1 in the modular filter cartridge of the present invention is fixedly connected to the flower plate of the filter cartridge dust collector.

[0111] The present invention also provides a method for assembling a modular filter cartridge:

[0112] The upper end cover of the fixed sealing seat 1 is fixedly connected to the flower plate of the cartridge dust collector, the concave threaded connection port 10 on the lower end cover of the fixed sealing seat 1 is aligned with the thread of the convex threaded connection port 9 on the upper end cover of the first modular filter segment 2, and the first modular filter segment 2 is tightened by rotating clockwise to press the upper end cover of the first modular filter segment 2 into the fixed sealing seat 1.

[0113] The force of rotating the first modular filter segment 2 is greater than 100N until the first modular filter segment 2 cannot rotate counterclockwise. At this time, the sealing groove 11 and the anti-loosening concave point 13 on the upper end cover of the first modular filter segment 2 and the sealing protrusion 12 and the anti-loosening protrusion 14 on the lower end cover of the fixed sealing seat 1 are sealed and locked.

[0114] Similarly, the first modular filter segment 2 and the middle modular filter segment 3, the middle modular filter segment 3 and the middle modular filter segment 3, the middle modular filter segment 3 and the second modular filter segment 4, and the second modular filter segment 4 and the bottom sealing plate 5 are connected in sequence using the above-mentioned method to complete the overall assembly of the modular filter cartridge of the present invention.

[0115] During the disassembly of the modular filter cartridge of the present invention, a disassembly tool containing a conical insert is inserted into the connection end face between the upper end cover 6 and the lower end cover 7 along the connection edge of the gap, and the disassembly tools on both left and right sides are inserted to raise the connection end face, so that the gap between the connection end faces is greater than 0.5 mm, and then the first modular filter segment 2 / middle modular filter segment 3 / second modular filter segment 4 is rotated counterclockwise to completely detach the modular filter cartridge of the present invention, completing the disassembly of the modular filter cartridge of the present invention. The same method can be used for sequential disassembly or disassembly at a specified position.

[0116] The head thickness of the thin insert used for disassembly on both sides is less than 0.1 mm, and can also have a certain cone angle, so that the modular filter cartridge of the present invention is very simple to disassemble and assemble, maintenance is more convenient and quick, and maintenance costs are reduced.

[0117] In practical applications, according to the needs of the gas dust removal device, the appropriate number of filter cartridge sections can be selected for combination. When the dust-laden gas passes through the multi-section combined filter cartridge, the dust is filtered out and the clean gas is discharged from the top of the filter cartridge. As dust accumulates in the gas, the contaminated filter cartridge sections can be removed and replaced individually without replacing the entire filter cartridge, reducing maintenance costs.

[0118] The performance measurement method achieved by the modular filter cartridge of the present invention is as follows:

[0119] Inspection methods and basis: Determination of particulate matter in exhaust gas from stationary pollution sources and sampling method for gaseous pollutants GB / T16157-1996, Technical Specifications for Exhaust Gas Monitoring from Stationary Sources HV / T397-2007.

[0120] Testing instruments and numbers: Laoying 3012H smoke analyzer (SB003), AEL-200 electronic balance (SB017), LG100B physical and chemical drying oven (SB023), empty box barometer DYM3 (SB056).

[0121] Inlet dust concentration (g / m 3 )

[0122] Insert the smoke sampling tube from the sampling hole into the inlet flue, place the sampling nozzle on the measuring point, facing the airflow, and extract a certain amount of dusty gas according to the particle isokinetic sampling principle, that is, the suction speed of the sampling nozzle is equal to the airflow speed at the measuring point (the relative error should be within 10%). Calculate the particle concentration in the exhaust gas based on the amount of particles captured on the sampling tube filter and the amount of gas extracted at the same time.

[0123] Dust concentration at outlet (mg / Nm 3 )

[0124] Insert the smoke sampling tube from the sampling hole into the outlet flue, place the sampling nozzle on the measuring point, facing the airflow, and extract a certain amount of dusty gas according to the particle isokinetic sampling principle, that is, the suction speed of the sampling nozzle is equal to the airflow speed at the measuring point (the relative error should be within 10%). Calculate the particle concentration in the exhaust gas based on the amount of particles captured on the sampling tube filter and the amount of gas extracted at the same time.

[0125] Pressure difference between inside and outside of filter cartridge (Pa)

[0126] The air pressure of the inlet and outlet flue is measured by a barometer. The pressure difference between the inside and outside of the filter cartridge (Pa) = the inlet flue pressure (Pa) - the outlet flue pressure (Pa).

[0127] After the modular filter segment of the present invention is installed and sprayed for use, the inlet and outlet flue samples are measured through the smoke sampling tube to calculate the concentration of particulate matter in the dust-laden gas, and the air pressure of the inlet and outlet flue is measured through a barometer to calculate the pressure difference between the inside and outside of the filter cartridge. By analyzing the above data, it is possible to deduce the sealing ability that the modular filter cartridge can achieve and maintain through spraying at a fixed pressure and a fixed frequency during actual use.

[0128] When the inlet dust concentration remains unchanged, the outlet dust concentration is less than 1 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is between 600Pa and 1100Pa, the modular filter cartridge is qualified, indicated by the symbol ○. When the outlet dust concentration is greater than 1 (mg / Nm 3 ) or the pressure difference between the inside and outside of the filter cartridge is less than 600Pa, the modular filter cartridge is unqualified and is indicated by the symbol ×.

[0129] The following data test results are the average of 10 sampling test results.

[0130] Examples 1-3

[0131] Under the following conditions, the locking force of the modular filter cartridge of Example 1-3 is 100N at the connection. After locking, it cannot be loosened by reverse rotation. The height of the clearance of the high-end surface that needs to be lifted for disassembly is 0.5mm. The number of anti-loosening protrusions and anti-loosening grooves is 32. The maximum clearance of the anti-loosening protrusions and anti-loosening grooves is 0.1mm. The diameter of each modular filter segment is 200mm. The minimum thickness of the cone tip of the insert is 0.1mm. The cone angle of the conical insert is 5°. The single section length of each modular filter segment is 500mm. The materials of each connection end cover are ABS, PA and PET respectively. The inner inclination angle of the connection end face is 5°, the sealing notch angle is 60°, the wall thickness of the trapezoidal thread hole is 2mm, the pitch of the trapezoidal thread is 5mm, the through hole length of the trapezoidal thread is 10 times the pitch, a total of 50mm, and the maximum clearance of the rear end face after locking is 0.1mm. During use. After 100 consecutive sprays, the inlet dust concentration is maintained at 15g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between inside and outside of the filter cartridge is 959Pa, 1007Pa and 983Pa respectively.

[0132] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0133] Embodiment 4-5

[0134] Under the following conditions, the locking force of the modular filter cartridge of Example 4-5 is 100N at the connection. After locking, it cannot be loosened by reverse rotation. The height of the clearance of the high-end surface that needs to be lifted for disassembly is 0.5mm. There are 4 anti-loosening protrusions and anti-loosening grooves. The maximum clearance of the anti-loosening protrusions and anti-loosening grooves is 0.2mm. The diameter of each modular filter segment is 100mm. The minimum thickness of the cone tip of the insert is 0.1mm. The cone angle of the conical insert is 5°. The single section length of each modular filter segment is 200mm. The material of each connection end cover is ABS. The inner inclination angle of the connection end face is 5°. The sealing notch angle is 30° and 75°. The wall thickness of the trapezoidal thread hole is 2mm. The pitch of the trapezoidal thread is 5mm. The through hole length of the trapezoidal thread is 10 times the pitch, totaling 50mm. The maximum clearance of the rear end face after locking is 0.2mm. During use. After 100 consecutive sprays, the inlet dust concentration is maintained at 15g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between inside and outside of the filter cartridge is 967Pa and 972Pa respectively.

[0135] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0136] Embodiment 6-7

[0137] Compared with Examples 4-5, the only difference in Example 6-7 is that the inner inclination angle of the connecting end surface is changed to 30°. After 100 consecutive injections, the dust concentration at the inlet is maintained at 15 g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 981Pa and 948Pa.

[0138] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0139] Embodiment 8-9

[0140] Compared with Examples 4-5, only the cone angle of the thin insert head is changed to 30° in Examples 8-9. After 100 consecutive injections, the dust concentration at the inlet is maintained at 15 g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 981Pa and 948Pa.

[0141] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0142] Embodiment 10-11

[0143] Compared with Examples 4-5, in Examples 10-11, the taper angle of the thin insert head is changed to 30° and the inner inclination angle of the connecting end surface is changed to 30°. After 100 consecutive injections, the dust concentration at the inlet is maintained at 15 g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 942Pa and 974Pa.

[0144] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0145] Examples 12-13

[0146] Compared with Examples 4-5, in Examples 12-13, the number of anti-loosening protrusions and anti-loosening grooves is changed to 200 and the diameter of each modular filter segment is changed to 400 mm. After 100 consecutive sprays, the dust concentration at the inlet is maintained at 15 g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 947Pa and 943Pa.

[0147] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0148] Examples 14-15

[0149] Compared with Examples 4-5, in Examples 14-15, the number of anti-loosening protrusions and anti-loosening grooves is changed to 200, the diameter of each modular filter segment is changed to 400 mm, and the inner inclination angle of the connecting end surface is changed to 30°. After 100 consecutive injections, the dust concentration at the inlet is maintained at 15 g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 983Pa and 937Pa.

[0150] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0151] Examples 16-17

[0152] Compared with Examples 4-5, Examples 16-17 change the number of anti-loosening protrusion grooves to 200 and the filter cartridge diameter to 400 mm, and the cone angle of the thin insert head to 30°. After 100 consecutive sprays, the inlet dust concentration is maintained at 15 g / m3, the outlet dust concentration is measured to be <1 (mg / Nm3), and the pressure difference between the inside and outside of the filter cartridge is 926 Pa and 1026 Pa.

[0153] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0154] Examples 18-19

[0155] Compared with Examples 4-5, in Examples 18-19, the number of anti-loosening protrusions and anti-loosening grooves is changed to 200 and the diameter of each modular filter segment is changed to 400 mm. At the same time, the cone angle of the conical insert is changed to 30° and the inner inclination angle of the connecting end surface is changed to 30°. After 100 consecutive injections, the dust concentration at the inlet is maintained at 15 g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 927Pa and 955Pa.

[0156] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0157] Comparative Example 1

[0158] Comparative Example 1: Under the following conditions, the anti-loosening locking force of the modular filter cartridge at the connection is 100N. After locking, it cannot be loosened by reverse rotation. The height of the high-end clearance required for disassembly is 0.5mm. The number of anti-loosening protrusions and anti-loosening grooves is 32. The maximum clearance of the anti-loosening protrusions and anti-loosening grooves is 0.2mm. The diameter of the filter cartridge is 200mm. The minimum thickness of the thin insert head is 0.1mm. The cone angle of the thin insert head is 5°. The single-section length of the modular filter section is 500mm. The material of each connection end cover is ABS. The inner inclination angle of the connection end face is 5°, the notch angle is 60°, the wall thickness of the trapezoidal thread hole is 3mm, the pitch of the trapezoidal thread is 5mm, the length of the trapezoidal thread through hole is 10 times the pitch, a total of 50mm, and the maximum clearance of the rear end face after locking is 0.2mm. During use. After 100 consecutive sprays, the inlet dust concentration is maintained at 15g / m 3 The measured dust concentration at the outlet is less than 1 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 980Pa.

[0159] It is proved that the sealing performance of the modular filter cartridge is good after continuous spraying for 100 times, and the product is evaluated as qualified ○.

[0160] Comparative Example 2

[0161] Compared with Comparative Example 1, the number of anti-loosening protrusions and anti-loosening grooves in Comparative Example 2 is changed to 24, and the corresponding anti-loosening locking force is 80N. After continuous spraying for 100 times, the inlet dust concentration is maintained at 15g / m 3 The measured dust concentration at the outlet is 5 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 542Pa.

[0162] It is proved that after the modular filter cartridge was continuously sprayed 100 times, most of the connecting parts loosened and the seal failed during the spraying process due to insufficient anti-loosening locking force. The product was evaluated as qualified ×.

[0163] Comparative Example 3

[0164] Compared with Comparative Example 1, Comparative Example 3 removes the anti-loosening chuck (anti-loosening convex point, anti-loosening groove, sealing groove, and sealing protrusion). After continuous blowing for 100 times, the dust concentration at the inlet is maintained at 15g / m 3 The measured dust concentration at the outlet is 10 (mg / Nm 3 ) and the pressure difference between the inside and outside of the filter cartridge is 268Pa.

[0165] It is proved that after the modular filter cartridge is continuously sprayed for 100 times, the anti-loosening locking force is lost due to the removal of the anti-loosening chuck, resulting in most of the connecting parts loosening during the spraying process and the seal completely failing. The product is evaluated as qualified ×.

[0166] Table 1 Structure and performance of modular filter cartridges of Examples 1 to 11

[0167]

[0168] Table 2 Structure and performance of modular filter cartridges of Examples 12 to 19

[0169]

[0170] Table 3 Structure and performance of modular filter cartridges of Comparative Examples 1 to 3

[0171]

[0172] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A modular filter cartridge, Features: It comprises a fixed sealing seat, a bottom sealing plate and one or more modular filter sections arranged between the fixed sealing seat and the bottom sealing plate; The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the modular filter section; The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the modular filtering section.

2. The modular filter cartridge according to claim 1, Features: The plurality of modular filter segments include a first modular filter segment and a second modular filter segment; The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the first modular filter section; The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the second modular filter section; The lower end cap of the first modular filter segment and the upper end cap of the second modular filter segment are sealedly connected.

3. The modular filter cartridge according to claim 1, Features: The plurality of modular filter segments include a first modular filter segment, an intermediate modular filter segment, and a second modular filter segment; The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the first modular filter section; The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the second modular filter section; The lower end cap of the first modular filter segment is sealed to the upper end cap of the middle modular filter segment, and the lower end cap of the middle modular filter segment is sealed to the upper end cap of the second modular filter segment.

4. The modular filter cartridge according to claim 1, Features: The plurality of modular filter segments include a first modular filter segment, a plurality of sequentially connected intermediate modular filter segments, and a second modular filter segment; The lower end cover of the fixed sealing seat is sealedly connected to the upper end cover of the first modular filter section; The upper end cover of the bottom sealing plate is sealedly connected to the lower end cover of the second modular filter section; The lower end cap of the first modular filter segment is sealed to the upper end cap of the uppermost intermediate modular filter segment, and the lower end cap of the lowermost intermediate modular filter segment is sealed to the upper end cap of the second modular filter segment.

5. The modular filter cartridge according to any one of claims 2 to 4, Features: The upper surface of the upper end cover is provided with an anti-loosening concave point, a sealing groove and a convex thread connection port; The upper end cover is configured as a circular structure; The convex thread connection port is arranged at the center of the circle of the upper end cover; The sealing groove is arranged at the periphery of the male thread connection port and is in a circular ring structure around the outer circle of the male thread connection port; The anti-loosening recesses are provided in plurality, are arranged at the periphery of the sealing recess, and are evenly arranged near the edge of the upper end cover.

6. The modular filter cartridge according to claim 5, Features: The lower surface of the lower end cover is provided with anti-loosening convex points, sealing convexities and concave threaded connection ports; The lower end cover is configured as a circular structure; The female thread connection port is arranged at the center of the circle of the lower end cover; The sealing protrusion is arranged on the periphery of the female thread connection port and is in a circular ring structure around the outer circle of the female thread connection port, and is adapted to the sealing groove; The anti-loosening convex points are provided in plurality, are arranged on the periphery of the sealing protrusion, are evenly arranged near the edge of the lower end cover, and are matched with the anti-loosening concave points.

7. The modular filter cartridge according to claim 6, Features: The sealing groove and the sealing protrusion are configured to be a V-shaped structure or a U-shaped structure that matches each other; The notch angles of the sealing groove and the sealing protrusion are between 30° and 75°.

8. The modular filter cartridge according to claim 6, Features: The fixed sealing seat, the bottom sealing plate, the upper end cover and the lower end cover are all made of one or a combination of PET, ABS, PMMA, PA, PC, POM, PP, PS engineering plastic materials.

9. The modular filter cartridge according to claim 6, Features: The contact connection surfaces between the upper end cover and the lower end cover are both arranged to be inwardly concave, and the inward concave inclination angle is between 1° and 30°.

10. The modular filter cartridge according to claim 6, Features: A circular air outlet hole is provided at the center of the male thread connection port and the female thread connection port.

11. The modular filter cartridge according to claim 10, Features: The wall thickness of the air outlet hole is ≥1mm; The length of the air outlet through hole is greater than or equal to 5 times the pitch of the male thread connection port / the female thread connection port.

12. The modular filter cartridge according to claim 6, Features: A positioning hole is also provided on the upper surface of the upper end cover near the circumferential edge; A locking pin matching the positioning hole is also provided on the lower surface of the lower end cover near the circumferential edge; or A positioning hole is also provided on the lower surface of the lower end cover near the circumferential edge; A locking pin matching the positioning hole is also provided on the upper surface of the upper end cover near the circumferential edge.

13. The modular filter cartridge according to claim 12, Features: The positioning holes and the locking pins are provided with one or more sets.

14. A cartridge dust collector, Features: Comprising a modular filter cartridge as described in any one of claims 1-13; The upper end cover of the fixed sealing seat is fixedly connected to the flower plate of the filter cartridge dust collector.

15. A method for assembling a modular filter cartridge according to any one of claims 1 to 13, Features: The upper end cover of the fixed sealing seat is fixedly connected to the flower plate of the filter cartridge dust collector, the concave threaded connection port on the lower end cover of the fixed sealing seat is aligned with the thread of the convex threaded connection port on the upper end cover of the first modular filter segment, and the upper end cover of the first modular filter segment is pressed into the fixed sealing seat by rotating the first modular filter segment clockwise to tighten it; Rotate the first modular filter segment until the first modular filter segment cannot rotate counterclockwise, at which time, the sealing groove and the anti-loosening concave point on the upper end cover of the first modular filter segment and the sealing protrusion and the anti-loosening protrusion on the lower end cover of the fixed sealing seat are sealed and locked; Similarly, the first modular filter segment and the middle modular filter segment, the middle modular filter segment and the middle modular filter segment, the middle modular filter segment and the second modular filter segment, and the second modular filter segment and the bottom sealing plate are sequentially connected in the above manner to complete the overall assembly of the modular filter cartridge; During the process of disassembling the modular filter cartridge, after removing the locking pin that serves as a positioning function, a disassembly tool containing a thin insert is used to insert the connecting end face between the upper end cover and the lower end cover along the connecting edge of the gap. The disassembly tools are inserted and lifted from the left two sides at the same time, so that the gap between the connecting end faces is greater than 0.5 mm, and the first modular filter segment / the middle modular filter segment / the second modular filter segment are rotated counterclockwise to completely detach the modular filter cartridge, thereby completing the disassembly of the modular filter cartridge.

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