A silicon carbide membrane filter plate and filter cartridge and filter

Abstract

The application relates to a silicon carbide membrane filter plate, a filter core and a filter, and relates to the technical field of filters.The silicon carbide membrane filter plate comprises a plate body, a plurality of filter channels are formed in the plate body, the filter channels penetrate through two side walls in the thickness direction of the plate body along the thickness direction of the plate body, the inner wall of the filter channel is provided with a closing plate, the circumferential side of the closing plate is connected with the inner wall of the corresponding filter channel and closes the corresponding filter channel; the closing plates in the two adjacent filter channels are arranged at intervals along the length direction of the filter channel; the central axis of the filter channel is arranged in an inclined mode along the thickness direction of the plate body, and the plate body is made of silicon carbide material. In the application, one end of the filter channel is closed and the other end is opened, the open end of one filter channel is arranged at the closed end of the other filter channel, and thus the filtering function of the silicon carbide membrane filter plate is realized; due to the inclined arrangement of the filter channel, the particulate matters are separated from the side wall of the filter channel, and thus the back flushing cleaning of the silicon carbide membrane filter plate is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filters, in particular to a silicon carbide membrane filter plate, a filter core and a filter. BACKGROUND

[0002] A gas filter is a device that captures dust from a porous filter material and purifies the gas.

[0003] At present, the commonly used filter is a filter cartridge type filter, which is made of fiber fabric and can only filter at room temperature. It cannot filter flue gas above 200℃. In addition, in order to increase the filtering area, the surface is crumpled, and the filtering principle is fiber filtering. When the filter cartridge reaches saturation, it cannot be effectively regenerated.

[0004] In order to meet the flue gas filtration under high temperature conditions, ceramic fiber filter tubes are commonly used at present, which can realize high temperature flue gas filtration under high temperature environment of ≤750℃. However, due to the performance of the material itself, the wall thickness of the designed filter tube is 20mm, and the filtering area is small. The filtering area of a 3m long filter tube with an inner diameter of 110mm is only 1.4m 2 Therefore, it is impossible to realize large gas volume flue gas filtration.

[0005] In recent years, under the drive of the low-carbon economy, silicon carbide material has entered the field of new materials. Silicon carbide membrane filter core is a new material filter core that has entered industrial application since 2010. Due to its small contact acute angle, it can withstand high temperature above 800℃, and can adapt to strong acid and strong alkali environment with pH of 0-14. Therefore, the material is widely used in solid-liquid separation and gas-solid separation industry, and has excellent filtering performance.

[0006] However, when silicon carbide material is used, it is generally made into a filter core to filter solid particles. At present, the commonly used specification of silicon carbide membrane filter core is applied to gas-solid separation. Due to the thick wall thickness of the silicon carbide membrane filter core, the pressure drop loss is obvious during gas-solid filtration and separation. At the same time, the flow channel of the silicon carbide filter membrane core is long, which makes it difficult to discharge particles from the filter core during backflush regeneration of the silicon carbide membrane filter core, so that the filter core is difficult to be used online for a long time. SUMMARY

[0007] The purpose of the present application is to provide a silicon carbide filter plate and filter core and filter which are convenient for backflush and chemical cleaning.

[0008] In a first aspect, the silicon carbide membrane filter plate provided by the present application adopts the following technical scheme:

[0009] The utility model provides a silicon carbide membrane filter plate, including the plate body, is equipped with a plurality of filter channels on the plate body, the filter channel is along the thickness direction of plate body and penetrates two side walls of the thickness direction, the filter channel inner wall is provided with the closing plate, the closing plate week side and corresponding filter channel inner wall are connected with each other and close corresponding filter channel, the closing plate in adjacent two filter channels is interval setting along the length direction of filter channel, the central axis of filter channel is inclined setting along the thickness direction of plate body, and the plate body adopts silicon carbide material.

[0010] Through adopting the above technical scheme, the plate body is provided with a plurality of filter channels, which can be used to realize gas flow; the closing plate is installed in the filter channel, and the closing plate closes the filter channel, so that the gas flow entering the filter channel cannot directly flow through the filter channel, and the increase of the gas flow will inevitably lead to the increase of the gas pressure in the filter channel. Since the plate body is made of silicon carbide material, the gas flow can enter the adjacent filter channel through the side wall of the filter channel after the gas pressure increases, so that the side wall of the filter channel realizes the filtration of the gas flow. Since the closing plates in the adjacent two filter channels are interval setting along the length direction of the filter channel, the gas flow can be discharged into one filter channel and enter the adjacent filter channel after being filtered through the side wall of the filter channel, and then be discharged from the filter channel, so that the filtration function is realized.

[0011] Since the central axis of the filter channel is inclined setting along the thickness direction of the plate body, the filter channel and the thickness direction of the plate body form a certain angle, so that when the silicon carbide membrane filter plate is back-flushed and cleaned, the particles on the side wall of the filter channel will be subjected to an inclined downward component force of the gravity of the particles. In addition, when the back-flushing gas flow is perpendicular to the surface of the plate body, the gas flow will directly impact on the side wall of the filter channel, especially when the filter channel is inclined downward in the vertical direction, so that the particles are easily discharged from the inclined filter channel, thereby facilitating the back-flushing and cleaning of the silicon carbide membrane filter plate and being beneficial to the regeneration of the silicon carbide membrane filter plate.

[0012] Optionally, the angle between the central axis of the filter channel and the thickness direction of the plate body is 15° to 45°.

[0013] Through adopting the above technical scheme, the inclination angle of the filter channel is set to be 15° to 45°, so that the particles in the filter channel are easily separated from the filter channel during back-flushing and cleaning, thereby improving the back-flushing and cleaning effect of the silicon carbide membrane filter plate and being beneficial to the regeneration of the silicon carbide membrane filter plate.

[0014] Optionally, the cross section of the filter channel is rectangular, and the width of the side wall of the filter channel is 2 mm to 5 mm, the length is 49 mm to 800 mm, and the thickness is 1 mm to 1.5 mm.

[0015] Further preferably, the side wall length of the filter channel is 49-51 mm.

[0016] By adopting the above technical solution, firstly, when the wall thickness of the side wall of the filter channel is too small, the material strength is reduced, the pressure resistance is reduced, and the filter channel is easy to break during use; when the wall thickness of the side wall of the filter channel is too large, the filter resistance is increased, and the regeneration is not facilitated, and the filter area is also reduced.

[0017] Secondly, when the side length of the side wall of the filter channel is too large, the end portion of the filter channel is not easy to be packaged, the end portion is easy to be broken, and the filter area is also reduced; when the side length of the side wall of the filter channel is too small, the industrial production difficulty is increased, and the regeneration is not facilitated.

[0018] Finally, when the side wall length of the filter channel is too long, the material in the filter channel cannot be smoothly blown out during the back flushing regeneration after the filter saturation; when the side wall length of the filter channel is too short, the filter area is reduced, and it is not easy to filter a large amount of gas in industrial application.

[0019] The filter channel is provided with a specific height-diameter ratio, the side wall width of the filter channel is 2-5 mm, preferably 3 mm, the side wall length of the filter channel is 49-51 mm, preferably 50 mm, and the side wall thickness of the filter channel is 1-1.5 mm; the size design can improve the back flushing regeneration after the filter saturation of the silicon carbide membrane filter plate.

[0020] In the second aspect, the filter core provided by the application adopts the following technical solution:

[0021] A filter core is installed with the above-mentioned silicon carbide membrane filter plate, comprising a mounting bracket, the mounting bracket is provided with a plurality of silicon carbide membrane filter plates on the periphery, and the plurality of silicon carbide membrane filter plates enclose the periphery of the mounting bracket; a filter flue capable of accommodating gas passing through is formed between the plurality of silicon carbide membrane filter plates; two adjacent filter channels are respectively in communication with the filter flue and the outer side of the mounting bracket; a bottom plate is arranged on one end surface of the mounting bracket, and the bottom plate encloses the filter flue.

[0022] By adopting the technical scheme, the side wall of the mounting bracket is provided with a plurality of silicon carbide membrane filter plates, the plurality of silicon carbide membrane filter plates close the side wall of the mounting bracket, and the silicon carbide membrane filter plates installed around the side wall of the mounting bracket form a filter flue therebetween, and the mounting bracket is provided with a bottom plate at one end, and the bottom plate closes one end of the filter flue; therefore, the dirty gas can enter the filter passage on the silicon carbide membrane filter plate from the outside of the filter core, so that the dirty gas can enter the filter flue after being filtered by the silicon carbide membrane filter plate, and the gas after purification can be discharged from the other end of the filter flue due to the bottom plate closing one end of the filter flue. In this way, the filter core realizes the filtration of the gas.

[0023] Optionally, the bottom plate is provided with a first constant pressure valve, and the first constant pressure valve and the filter flue are in communication with each other.

[0024] By adopting the technical scheme, the first constant pressure valve is provided, and the first constant pressure valve opens unidirectionally from the inside of the filter flue to the outside of the filter flue, so as to ensure that the pressure relief is performed when the instantaneous blowback pressure exceeds the set value of the first constant pressure valve during the blowback process, and the safety of the gas pressure in the filter core is ensured, the filter core is prevented from being broken during the blowback, and the service life of the filter core is ensured.

[0025] Optionally, the mounting bracket is provided with a mounting clasp at one end, and the mounting clasp is arranged on the outer side wall of the mounting bracket and is arranged in the length direction of the filter flue and spaced apart from the bottom plate.

[0026] By adopting the technical scheme, the mounting clasp is arranged on the side of the mounting bracket away from the bottom plate and on the outer side wall of the mounting bracket. Therefore, the mounting clasp is arranged to facilitate the installation and clamping of the filter core.

[0027] In a third aspect, the filter provided by the present application adopts the following technical scheme:

[0028] A filter is provided with the filter core, and comprises a shell, a pipe-in duct and a pipe-out duct are respectively communicated on the shell, a filter layer is arranged in the shell, the inner wall of the filter layer and the inner wall of the shell are connected with each other, and the communication part of the pipe-in duct and the shell and the communication part of the pipe-out duct and the shell are respectively arranged on the opposite sides of the filter layer; the filter layer comprises a flower plate, a plurality of mounting holes are provided through the flower plate, the mounting holes are arranged in one-to-one correspondence with the filter cores, the filter cores are inserted and matched with the corresponding mounting holes, and the mounting clasp is in abutment with the flower plate in the length direction of the filter core.

[0029] The filter is provided with the inlet pipeline and the outlet pipeline, which are used for the circulation of the gas in and out of the shell; the filter layer is arranged in the shell, and the inlet pipeline and the outlet pipeline are arranged on the opposite sides of the filter layer, so that the gas entering the shell can be filtered and then discharged from the shell; the flower plate is arranged in the filter layer, the mounting hole is formed in the flower plate, the filter core can be inserted through the mounting hole, and the mounting clasp is arranged in the flower plate, so that the filter core is positioned.

[0030] Optionally, the flower plate is provided with a fastening cover plate in the thickness direction of the flower plate, the mounting clasp is arranged between the flower plate and the fastening cover plate, a plurality of fastening screw sets are arranged between the fastening cover plate and the flower plate, each fastening screw set comprises a fastening bolt and a fastening nut, the fastening bolt is connected with the fastening nut through threads, the fastening bolt penetrates through the fastening cover plate and the flower plate, and the fastening cover plate and the flower plate are arranged along the axial direction of the fastening bolt between the nut and the fastening nut of the fastening bolt.

[0031] Through the above technical scheme, the fastening cover plate is arranged on one side of the flower plate, and the mounting clasp is arranged between the flower plate and the fastening cover plate, so that the installation and fixation of the filter core can be realized through the arrangement of the fastening cover plate and the flower plate; and the fastening screw set is arranged to connect the fastening cover plate and the flower plate with each other.

[0032] Optionally, the fastening bolt is provided with a distance sleeve, and the two ends of the distance sleeve in the axial direction are in contact with the flower plate and the fastening cover plate respectively.

[0033] Through the above technical scheme, the distance sleeve can limit the distance between the flower plate and the fastening cover plate.

[0034] Optionally, the filter core is provided with a venturi.

[0035] Through the above technical scheme, the arrangement of the venturi can increase the pressure of the back flushing airflow, so as to increase the back flushing effect of the filter core.

[0036] In summary, the present application has at least one of the following beneficial technical effects:

[0037] 1. In the present application, one end of the filter channel of the silicon carbide membrane filter plate is closed, and the other end is open; in the two adjacent filter channels, the open end of one filter channel is arranged at the closed end of the adjacent filter channel, so that the airflow can enter one filter channel and then enter the adjacent filter channel after being filtered by the side wall of the filter channel, and then be discharged from the filter channel, thereby realizing the filtering function of the silicon carbide membrane filter plate.

[0038] The filter channel in the present application is horizontally arranged. When the filter particles contain crystal and colloidal substances, they will deposit on the bottom surface of the filter channel due to gravity, while the two vertical surfaces and the top surface of the filter channel still have filtering function. When back flushing and regeneration, the dust deposited on the bottom can be blown out of the filter channel to realize regeneration. The traditional filter channel is vertically arranged. Crystal and colloidal substances are easy to gather at the inlet of the filter channel, blocking the inlet of the filter channel and causing the filter channel to lose filtering capacity, thereby affecting the filtering efficiency.

[0039] When filtering liquid, the ultrafine powder deposits on the bottom surface of the filter channel. After filtering, clean solvent is introduced into the filter channel from the feed direction to clean or replace the solvent, and after reaching the cleaning or replacement index, the valuable ultrafine powder in the filter channel is washed out by reverse flushing. The traditional filter channel is vertically arranged. The ultrafine powder deposits in the filter channel. When it deposits to a certain extent, it naturally falls off from the filter channel due to gravity and gathers together. It is difficult to clean or replace the solvent, which is not conducive to industrial production.

[0040] 2. The filter channel in the present application is inclined, so that when the silicon carbide membrane filter plate is backwashed and cleaned, the particles on the side wall of the filter channel will be subjected to a downward component force of their own gravity, thereby facilitating the separation of the particles from the side wall of the filter channel, and facilitating the backwashing and cleaning of the silicon carbide membrane filter plate.

[0041] 3. The size and shape of the side wall of the filter channel in the present application are arranged according to the length of the filter channel: 2mm-5mm, and the thickness is 50mm. The filtering area of a single filter channel can reach 400mm 2 to 1000mm 2 .

[0042] 4. The filter core in the present application is assembled by using multiple silicon carbide membrane filter plates, and the filter is assembled by using the filter core. The filtering area of the filter is increased. The amount of silicon carbide membrane filter plates in the filter core can be adjusted according to the actual filtering air volume. It is easy to regenerate, has stable continuous online use performance and long service life; has good thermal stability, can withstand high temperature of 800℃, and can withstand long-term operation of strong acid and strong base; has low filtering pressure difference, generally within 5KPa during initial operation; has high opening rate and large treatment capacity; is not easy to block, can be backwashed and regenerated online, and is convenient to operate; the filter has the characteristics of corrosion resistance, high precision, high flux, easy regeneration, long service life, etc. The filter can also process high-temperature flue gas (such as filtering of coke powder in dry gas, high-corrosive tail gas, strong-alkali gas, strong-acid gas, etc.). BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 is the overall structure diagram of the silicon carbide membrane filter plate in Example 1 of the present application.

[0044] Figure 2 is a perspective view of a filter channel in the silicon carbide membrane filter plate in Embodiment 1 of the present application.

[0045] Figure 3 is a cross-sectional view of the silicon carbide membrane filter plate in Embodiment 1 of the present application.

[0046] Figure 4 is a perspective view of the filter core in Embodiment 1 of the present application.

[0047] Figure 5 is a perspective view of the filter core in Embodiment 1 of the present application.

[0048] Figure 6 is a perspective view of the filter in Embodiment 1 of the present application.

[0049] Figure 7 is a cross-sectional view of the filter in Embodiment 1 of the present application.

[0050] Figure 8 is an exploded view of part of the filter layer in Embodiment 1 of the present application.

[0051] Figure 9 is a perspective view of the filter in Embodiment 2 of the present application.

[0052] Figure 10 is a perspective view of the filter in Embodiment 2 of the present application.

[0053] Figure 11 is a perspective view of the filter in Embodiment 3 of the present application.

[0054] In the drawings, 1 is a silicon carbide membrane filter plate; 11 is a plate body; 12 is a filter channel; 13 is a closing plate; 2 is a filter core; 21 is a mounting bracket; 22 is a filter flue; 23 is a bottom plate; 24 is a first constant pressure valve; 25 is a mounting snap ring; 3 is a housing; 31 is an inlet pipe; 32 is an outlet pipe; 33 is a backflush pipe; 34 is a dust outlet; 35 is a baffle; 36 is a second constant pressure valve; 37 is an ash collection bin; 4 is a filter layer; 41 is a flower plate; 42 is a mounting hole; 43 is a fastening cover plate; 44 is a vent hole; 45 is a sealing washer; 46 is a fastening screw set; 461 is a fastening bolt; 462 is a fastening nut; 463 is a constant distance sleeve; 47 is a venturi; and 48 is a clamping ring. DETAILED DESCRIPTION

[0055] The following will be described in detail with reference to the accompanying drawings. Figure 1 - the accompanying drawings Figure 11 The present application will be described in further detail.

[0056] A silicon carbide membrane filter plate will be described with reference to Figure 1 andFigure 2 The plate body 11 is made of silicon carbide material, and in this application, the plate body 11 is a cuboid plate with a length of 100 mm, a width of 30 mm, and a thickness of 50 mm. The specific shape and size of the plate body 11 are determined by the specific use environment.

[0057] Referring to Figure 1 and Figure 2 A plurality of filter channels 12 are provided through the plate body 11, the filter channels 12 pass through both sides of the thickness direction of the plate body 11, the cross section of the filter channel 12 is square, and a plurality of filter channels 12 are arranged in a matrix. The cross-sectional shape and arrangement of the filter channel 12 can be adjusted according to the actual use environment. The inner wall of the filter channel 12 is connected with a sealing plate 13, and the sealing plate 13 is connected with the inner circumferential wall of the filter channel 12 on all sides, so that the sealing plate 13 can seal the corresponding filter channel 12.

[0058] The sealing plates 13 in the adjacent two filter channels 12 are arranged in the length direction of the filter channel 12. Thus, one end of each filter channel 12 is open and the other end is closed, and in the adjacent two filter channels 12, the open end of one filter channel 12 is arranged at the closed end of the adjacent other filter channel 12. The open end of the filter channel 12 can be discharged into turbid gas. Since the sealing plate 13 seals the corresponding filter channel 12, the gas pressure in the filter channel 12 will rise, so that the turbid gas flow can be filtered by the side wall of the filter channel 12, and the filtered gas flow can enter the adjacent other filter channel 12. At this time, the gas flow is clean gas, so that one side of the plate body 11 can discharge turbid gas, and the other side of the plate body 11 can discharge clean gas.

[0059] The plate body 11 is integrally formed, so as to ensure the sealing property between the filter channels 12, thereby improving the filtering effect. The filtering precision of the silicon carbide membrane filter plate 1 can be divided into the following four kinds according to the pore size of the silicon carbide membrane: 1 μm, 3 μm, 10 μm and 30 μm.

[0060] The thickness of the side wall of the filter channel 12 is 1 mm to 1.5 mm. When the wall thickness is too small, the material strength and pressure resistance are reduced, and it is easy to break during use. When the wall thickness is too large, the filtering resistance is increased, and it is not conducive to regeneration, and the filtering area is reduced.

[0061] The width of the side wall of the filter channel 12 is 2 mm to 5 mm, preferably 3 mm. When the width is too large, the end of the filter channel 12 is not easy to package, the end packaging part is easy to break, and the filtering area is reduced. When the width is too small, it increases the difficulty of industrial production, and it is not conducive to regeneration.

[0062] The side wall length of the filter channel 12 is 49mm to 51mm, preferably 50mm, and the filter channel 12 is too long to blow out the material in the channel smoothly when the silicon carbide membrane filter plate 1 is regenerated by back flushing after saturation, and the filter channel 12 is too short to reduce the filter area.

[0063] Such arrangement makes the pressure difference of the silicon carbide membrane filter plate 1 greater than 0.2kg / cm 2 , the opening rate is greater than 60%, and the pressure difference can be reduced under the requirement of ensuring the opening rate; when the airflow velocity is 1m / min to 5m / min, the maximum pressure drop design value of the gas inside and outside the silicon carbide membrane filter plate 1 is 0.1MPa; under the premise that the silicon carbide membrane filter plate 1 is qualified, it can theoretically meet the filtration of high-temperature flue gas ≤800℃.

[0064] Referring to Figure 3 , the length direction of the filter channel 12 is inclined to the thickness direction of the plate body 11, and the central axis of the filter channel 12 has an angle of 15° to 45° with the thickness direction of the plate body 11, so that there is an angle between the filter channel 12 and the two side surfaces of the plate body 11 in the thickness direction. Therefore, when the filter channel 12 is back-flushed for removing the adhered particles on the inner wall of the filter channel 12, due to the inclined arrangement of the side wall of the filter channel 12, the particles on the side wall of the filter channel 12 will be subjected to a vertical directional component, which facilitates the detachment of the particles, and thus facilitates the back-flushing cleaning of the silicon carbide membrane filter plate 1.

[0065] The implementation principle of the embodiment of the present application is:

[0066] The filter area of the silicon carbide membrane filter plate 1 is increased;

[0067] The filter area of a single filter channel 12 is:

[0068] The side wall width is 2mm: 2mm×4×50mm=400mm 2 ;

[0069] The side wall width is 5mm: 5mm×4×50mm=1000mm 2 ;

[0070] That is, the filter area of a single filter channel 12 is 400mm 2 to 1000mm 2 .

[0071] When the length and width of the silicon carbide membrane filter plate 1 are set to 1000mm and 300mm respectively, the number of filter channels 12 is:

[0072] The side wall width is 2mm: (300mm×1000mm) ÷ (2mm+1mm) 2 ÷2=16666;

[0073] Side wall width is 5mm: (300mm x 1000mm) ÷ (5mm + 1.5mm) 2 ÷2=3550;

[0074] That is, the number of filter channels of the single silicon carbide membrane filter plate 1 is 3550 to 16666.

[0075] The total filter area of the silicon carbide membrane filter plate 1 is:

[0076] Side wall width is 2mm: 400mm 2 x 16666=6666400mm 2 =6.666m 2 ;

[0077] Side wall width is 5mm: 1000mm 2 x 3550=3550000mm 2 =3.55m 2 ;

[0078] That is, the total filter area of the silicon carbide membrane filter plate 1 is 3.55m 2 to 6.666m 2 .

[0079] The use method of the silicon carbide membrane filter plate 1: when the dirty gas enters the corresponding filter channel 12, because the lower end of the filter channel 12 is closed by the closing plate 13, the dirty gas passes into the adjacent filter channel 12 from the side wall of the adjacent filter channel 12, so that the dirty gas is filtered through the side wall of the filter channel 12, so that the solid particles are intercepted in the corresponding filter channel 12, and the clean gas flow is discharged into the adjacent filter channel 12, that is, the gas-solid filtration function of the silicon carbide membrane filter plate 1 is realized.

[0080] A filter core, referring to Figure 4 and Figure 5The filter core 2 comprises a mounting bracket 21, which is a cuboid in the present application, and the specific shape of the mounting bracket 21 can be selected according to the specific use environment. A plurality of silicon carbide membrane filter plates 1 are arranged on the side of the mounting bracket 21, and the plurality of silicon carbide membrane filter plates 1 close the side walls of the mounting bracket 21, and a filter flue 22 is formed between the plurality of silicon carbide membrane filter plates 1, which is arranged along the axial direction of the mounting bracket 21. In the two adjacent filter channels 12 on the silicon carbide membrane filter plate 1, one filter channel 12 is in communication with the filter flue 22, and the other filter channel 12 is in communication with the outside of the mounting bracket 21. One end of the mounting bracket 21 is provided with a bottom plate 23, which closes the filter flue 22. A first constant pressure valve 24 is arranged on the bottom plate 23, which is in communication with the filter flue 22. Thus, the filter core 2 is installed in the environment where air filtration is required, and the turbid gas is discharged. As the pressure of the turbid gas increases, the turbid gas will enter the filter channel 12 in the silicon carbide membrane filter plate 1, and the clean gas after purification by the silicon carbide membrane filter plate 1 can be discharged into the filter flue 22, thereby completing the filtration of the air. At the same time, the first constant pressure valve 24 can be opened when the pressure in the filter flue 22 is too high during the backwashing regeneration process, thereby ensuring the internal pressure of the filter core 2.

[0081] Referring to Figure 4 and Figure 5 , a mounting clasp 25 is arranged on the outer side wall of the mounting bracket 21, which is arranged at one end of the mounting bracket 21 along the axial direction of the mounting bracket 21, and the mounting clasp 25 and the bottom plate 23 are arranged at intervals along the axial direction of the mounting bracket 21. Due to the arrangement of the mounting clasp 25, the installation of the filter core 2 is facilitated.

[0082] Referring to Figure 4 and Figure 5 , the axis of the filter channel 12 and the axis of the mounting bracket 21 are arranged at an angle to each other, the end of the filter channel 12 close to the mounting clasp 25 is arranged along the direction close to the axis of the mounting bracket 21, and the end of the filter channel 12 close to the bottom plate 23 is arranged along the direction away from the axis of the mounting bracket 21. Therefore, when the filter core 2 is installed in the vertical direction, the filter channel 12 is arranged at an angle downward, so that when the filter core is backwashed, the solid particles in the filter channel 12 are separated by their own gravity, facilitating the discharge of the solid particles.

[0083] The implementation principle of the embodiment of the present application is:

[0084] The cuboid mounting bracket 21 is used, and three silicon carbide membrane filter plates 1 are arranged on each side wall of the mounting bracket 21 to close the corresponding side wall of the mounting bracket 21. Therefore, the total filtering area of a single filter core 2 is:

[0085] The width of the side wall is 2mm: 3x4x6.666m2 =79.992m 2 ;

[0086] Side wall width is 5mm: 3x4x3.55m 2 =42.6m 2 ;

[0087] Therefore, the filter area of a single filter core 2 installed with 12 silicon carbide membrane filter plates 1 can be: 42.6m 2 to 79.992m 2 .

[0088] If the filter speed of the filter core 2 is the same as that of the ceramic tube, the wind speed is 1m / min, and the maximum filter air volume is: 80m 2 x 60min x 1m / min = 4800m 3 / h; because the wall thickness of the filter channel 12 is 1mm to 1.5mm, the filter speed can be increased to 3m / min, and the maximum filter air volume of a single filter core 2 reaches 14400m 3 / h.

[0089] A filter, referring to Figure 6 and Figure 7 , comprises a shell 3, the shell 3 is provided with an inlet pipe 31 and an outlet pipe 32, and the inlet pipe 31 and the outlet pipe 32 are both in communication with the shell 3. The shell 3 is provided with a filter layer 4, and the filter layer 4 is connected with the inner wall of the shell 3 on all sides, so that the filter layer 4 can separate the shell 3 into two parts isolated from each other, and the communication position of the inlet pipe 31 with the shell 3 and the installation position of the outlet pipe 32 with the shell 3 are respectively arranged on both sides of the filter layer 4 along the thickness direction of the filter layer 4. Therefore, the turbid gas can be discharged into the inlet pipe 31, and after being filtered by the filter layer 4, the clean gas after filtration can be discharged from the outlet pipe 32, so as to realize the filtration of the gas.

[0090] Referring to Figure 7 and Figure 8 , the filter layer 4 comprises a flower plate 41, the flower plate 41 is connected with the inner wall of the shell 3 on all sides and separates the shell 3 into two parts independent of each other, a plurality of mounting holes 42 are formed in the flower plate 41 and penetrate the flower plate 41 along the thickness direction of the flower plate 41, and a plurality of filter cores 2 are arranged on the flower plate 41, the filter cores 2 are arranged one by one corresponding to the mounting holes 42, the filter cores 2 are inserted into the corresponding mounting holes 42, the filter cores 2 are arranged in the vertical direction in the axial direction, and the mounting clamps 25 are in abutment with the flower plate 41 in the vertical direction. Therefore, the arrangement of the flower plate 41 can realize the installation of the filter cores 2, and the filter cores 2 are inserted into all the mounting holes 42, so that the turbid gas discharged into the inlet pipe 31 must be filtered by the filter cores 2 before being discharged, thereby ensuring the purification of the gas.

[0091] The sealing washer 45 is arranged on the flower plate 41, and the sealing washer 45 is in abutment with the flower plate 41 and the mounting clasp 25 on both sides in the thickness direction of the sealing washer 45, so that the sealing washer 45 can increase the sealing performance of the connection between the filter element 2 and the flower plate 41.

[0092] Referring to Figure 7 and Figure 8 , the filter layer 4 further comprises a fastening cover plate 43, the fastening cover plate 43 is arranged in the vertical direction and spaced apart from the flower plate 41, and the mounting clasp 25 is in abutment with the fastening cover plate 43 and the sealing washer 45 on both sides in the thickness direction of the mounting clasp 25, so that the fastening cover plate 43 and the flower plate 41 can realize positioning and locking of the mounting clasp 25, and increase the stability of the installation of the filter element 2. The fastening cover plate 43 is provided with a plurality of air holes 44, the air holes 44 are arranged one by one corresponding to the mounting holes 42, and the air holes 44 are in communication with the corresponding filter element 2, so as to ensure that the gas in the filter element 2 can flow.

[0093] Referring to Figure 7 and Figure 8 , a plurality of fastening screw groups 46 are arranged between the fastening cover plate 43 and the flower plate 41, the fastening screw group 46 comprises a fastening bolt 461 and a fastening nut 462, the fastening bolt 461 axially penetrates the fastening cover plate 43 and the flower plate 41 in the vertical direction, and the fastening bolt 461 and the fastening nut 462 are connected by threads, along the axial direction of the fastening bolt 461, the fastening cover plate 43 and the flower plate 41 are arranged between the nut of the fastening nut 462 and the fastening bolt 461, so that the fastening screw group 46 can fix the filter cover plate and the flower plate 41.

[0094] The fastening screw group 46 further comprises a distance sleeve 463, the distance sleeve 463 is sleeved on the fastening bolt 461, and the axial ends of the distance sleeve 463 are in abutment with the fastening cover plate 43 and the flower plate 41 respectively, so that the distance sleeve 463 can limit the distance between the flower plate 41 and the fastening cover plate 43, so as to ensure the distance between the flower plate 41 and the fastening cover plate 43.

[0095] Referring to Figure 7 and Figure 8 , the shell 3 is further communicated with a back flushing pipeline 33, the back flushing pipeline 33 is communicated with a plurality of branch pipelines, the branch pipelines are arranged one by one corresponding to the filter elements 2 in the vertical direction, and the gas outlets of the branch pipelines are arranged opposite to the filter elements 2 in the vertical direction, so that when the high-pressure gas flow is introduced into the back flushing pipeline 33, the high-pressure gas flow enters the corresponding filter element 2 through the gas outlets of the branch pipelines, and back flushing is realized, so that the dust adhered to the outer wall of the filter element 2 can be blown into the shell 3.

[0096] The lower inner wall of the shell 3 is provided with a dust discharging port 34, so that after the back flushing of the filter core 2, the dust can be discharged from the dust discharging port 34. When the filter is used normally, the dust discharging port 34 is inserted with a baffle 35, which closes the dust discharging port 34.

[0097] The filter core 2 is provided with a venturi 47, which is arranged along the axial direction of the venturi 47 and the corresponding branch pipe outlet. The venturi 47 is arranged in the filter core 2, and one end of the venturi 47 is provided with a clamping ring 48, which is in contact with the mounting clamping ring 25 and the fastening cover plate 43 on both sides in the thickness direction. Therefore, the venturi 47 can be fixed, and the venturi 47 can increase the cleaning effect of the filter core 2 when the filter core 2 is back flushed.

[0098] The implementation principle of the embodiment of the application is that: when air filtration is performed: the inlet pipe 31 is arranged below the filter layer 4 in the vertical direction, the outlet pipe 32 is arranged above the filter layer 4 in the vertical direction, the filter core 2 is arranged in the vertical direction, and the filter flue 22 of the filter core 2 is in communication with the internal space of the shell 3 above the filter layer 4 in the vertical direction. After the turbid gas is discharged into the inlet pipe 31 and passes through the silicon carbide membrane filter plate 1 on the side wall of the filter core 2, the purified air can enter the exhaust pipe, realizing the filtration of the gas.

[0099] When liquid filtration is performed: the filter for air filtration is inverted, the inlet pipe 31 is arranged below the filter layer 4 in the vertical direction, the outlet pipe 32 is arranged above the filter layer 4 in the vertical direction, the filter core 2 is arranged in the vertical direction, and the filter flue 22 is in communication with the space of the shell 3 below the filter layer 4. The top of the filter core 2 is provided with a grid for fixing the filterability and eliminating the vibration during the liquid filtration and the unloading of the filter core 2. The turbid liquid is discharged into the inlet pipe 31, and the turbid liquid enters the filter core 2 through overflow. After the turbid liquid is purified by the filter core 2, the clean liquid is discharged into the shell 3.

[0100] Embodiment 2:

[0101] A filter, with reference to Figure 9 and Figure 10The difference between the embodiment and embodiment 1 is that the shell 3 is arranged with a plurality of silicon carbide membrane filter plates 1, the thickness of the silicon carbide membrane filter plate 1 is increased to 500mm to 800mm in the application. The plurality of silicon carbide membrane filter plates 1 are arranged in two groups, each group of silicon carbide membrane filter plates 1 is stacked into a plate shape by a fixing support or an adhesive, and the side wall of each group of silicon carbide membrane filter plates 1 is fixedly connected with the inner side wall of the shell 3, the two groups of silicon carbide membrane filter plates 1 are arranged in a horizontal direction and spaced from each other, and the filter channels 12 in the silicon carbide membrane filter plates 1 are arranged in a horizontal direction. The shell 3 is communicated with two inlet pipes 31, and the two inlet pipes 31 are arranged on the side walls of the shell 3 on the two sides away from each other of the two groups of silicon carbide membrane filter plates 1; the shell 3 is also communicated with an outlet pipe 32, and the outlet pipe 32 is arranged on the inner wall of the shell 3 between the two groups of silicon carbide membrane filter plates 1, and the outlet pipe 32 is communicated with the gaps between the two groups of silicon carbide membrane filter plates 1. Thus, the dirty gas is discharged into the inlet pipe 31, and then the clean gas is discharged from the outlet pipe 32 after the dirty gas is filtered by the corresponding silicon carbide membrane filter plate 1.

[0102] The shell 3 is also communicated with a back flushing pipe 33, the back flushing pipe 33 is communicated into the gap between the two groups of silicon carbide membrane filter plates 1, and the back flushing pipe 33 is communicated with a plurality of branch pipes, the branch pipes are arranged one by one corresponding to the filter channels 12 of the two groups of silicon carbide membrane filter plates 1, and the gas outlets of the branch pipes are arranged opposite to the corresponding filter channels 12. Thus, the high-pressure gas flow is introduced into the back flushing pipe 33, the branch pipes can spray the high-pressure gas flow into the corresponding filter channels 12, and the dust in the adjacent filter channels 12 can be discharged to realize back flushing regeneration. At the same time, the dust blown out can enter the gap between the gas inlet direction of each group of silicon carbide membrane filter plates 1 and the corresponding inner wall of the shell.

[0103] The shell 3 is arranged with two dust collecting bins 37, each dust collecting bin 37 is communicated with the shell 3 on the side of one group of silicon carbide membrane filter plates 1 away from the other group of silicon carbide membrane filter plates 1, and the dust collecting bin 37 is in a vertical direction and is in a tapered shape, so that the dust collecting bin 37 is arranged to facilitate the collection of dust during back flushing, thereby facilitating the centralized discharge of dust.

[0104] The inner wall of the shell 3 is arranged with refractory bricks, which can protect the installation shell 3, avoid the influence of high temperature on the shell 3, reduce the loss of heat in the flue gas, ensure that the clean gas after filtration still contains effective heat energy, and facilitate the subsequent use of heat energy.

[0105] The second constant pressure valve 36 is arranged on the shell 3, and the second constant pressure valve 36 is in communication with the inside of the shell 3 and the gaps between the two groups of silicon carbide membrane filter plates 1, so that the arrangement of the second constant pressure valve 36 can prevent the air pressure in the shell 3 from being too large, and has a protection effect.

[0106] The implementation principle of the embodiment of the present application is that the silicon carbide membrane filter plate 1 is directly installed as a filter core 2 in the shell 3, greatly increasing the air filtration area of the filter. According to actual needs, refractory bricks or other refractory materials can be built on the inner wall of the shell 3, and the entire filter can withstand higher temperature conditions of flue gas filtration. In theory, the working condition can withstand 800-900℃ flue gas filtration.

[0107] Embodiment 3:

[0108] A filter, with reference to Figure 11 The difference between the present embodiment and embodiment 2 is that the backflushing pipeline 33 is arranged in the vertical direction in the axial direction, and the backflushing pipeline 33 is arranged on the upper side of the shell 3 in the vertical direction, the backflushing pipeline 33 is in communication with the gaps between the two groups of silicon carbide membrane filter plates 1, the backflushing pipeline 33 is communicated with a plurality of layers of branch pipelines, the plurality of layers of branch pipelines are arranged in the vertical direction in sequence and are in communication with the backflushing pipeline 33, and each layer of branch pipeline corresponds to all the filter channels 12 at the same height in the two groups of silicon carbide membrane filter plates 1, so that the high-pressure airflow introduced into each layer of branch pipeline can backflush the corresponding layer of filter channels 12.

[0109] The implementation principle of the embodiment of the present application is that since the backflushing pipeline 33 is arranged above the shell 3, the high-pressure airflow discharged in the backflushing pipeline 33 will be sprayed out from the corresponding branch pipeline in the vertical direction from top to bottom in sequence, so that the branch pipeline above in the vertical direction will spray out the high-pressure airflow first, and thus the dust in the corresponding filter channel 12 can be discharged from top to bottom in sequence. Therefore, the possibility of dust in the upper filter channel 12 being discharged into the lower filter channel 12 can be reduced.

[0110] The embodiments of the specific embodiment are the preferred embodiments of the present application, but do not limit the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A filter cartridge, characterized by, The application relates to a silicon carbide membrane filter plate, which comprises a plate body (11) provided with a plurality of filter channels (12) penetrating through two side walls of the plate body (11) along the thickness direction of the plate body (11), and a closing plate (13) is arranged on the inner wall of the filter channel (12); the closing plates (13) in two adjacent filter channels (12) are arranged at intervals along the length direction of the filter channel (12); the central axis of the filter channel (12) is arranged obliquely along the thickness direction of the plate body (11); the plate body (11) is made of silicon carbide material. A mounting bracket (21) is provided with a plurality of silicon carbide membrane filter plates (1) on the peripheral side, and the peripheral side of the mounting bracket (21) is closed by the silicon carbide membrane filter plates (1); a filter flue (22) capable of accommodating gas passing through is formed between the silicon carbide membrane filter plates (1); two adjacent filter channels (12) are in communication with the filter flue (22) and the outer side of the mounting bracket (21) respectively; a bottom plate (23) is arranged on one end surface of the mounting bracket (21), and the bottom plate (23) closes the filter flue (22). A first constant pressure valve (24) is arranged on the bottom plate (23) and in communication with the filter flue (22). An installation clasp (25) is arranged on one end of the mounting bracket (21) and on the outer side wall of the mounting bracket (21); the installation clasp (25) is arranged at intervals with the bottom plate (23) along the length direction of the filter flue (22).

2. A filter cartridge according to claim 1, wherein The application relates to a filter device, which comprises a shell (3) provided with an inlet pipeline (31) and an outlet pipeline (32) in communication with the shell (3) respectively; a filter layer (4) is arranged in the shell (3) and connected with the inner wall of the shell (3); the communication positions of the inlet pipeline (31) and the outlet pipeline (32) with the shell (3) are arranged on opposite sides of the filter layer (4) respectively; the filter layer (4) comprises a flower plate (41) provided with a plurality of installation holes (42) penetrating through the flower plate (41); the filter core (2) is in one-to-one correspondence with the installation holes (42) and is in plug-in cooperation with the corresponding installation holes (42); the installation clasp (25) is in mutual abutment with the flower plate (41) along the length direction of the filter core (2).

3. A filter in which the filter cartridge according to claim 2 is installed, characterized by ​ 4. A filter according to claim 3, wherein The flower plate (41) is provided with a fastening cover plate (43) in the direction of its thickness, and the mounting clasp (25) is arranged between the flower plate (41) and the fastening cover plate (43); a plurality of fastening screw groups (46) are arranged between the fastening cover plate (43) and the flower plate (41), each of the fastening screw groups (46) comprises a fastening bolt (461) and a fastening nut (462), the fastening bolt (461) and the fastening nut (462) are connected through threads, and the fastening bolt (461) penetrates through the fastening cover plate (43) and the flower plate (41), and the fastening cover plate (43) and the flower plate (41) are arranged along the axial direction of the fastening bolt (461) between the nut of the fastening bolt (461) and the fastening nut (462).

5. A filter according to claim 4, wherein A distance sleeve (463) is sleeved on the fastening bolt (461), and the axial two ends of the distance sleeve (463) are in abutment with the flower plate (41) and the fastening cover plate (43) respectively.

6. The filter of claim 3, wherein A venturi (47) is arranged in the filter element (2).

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