Precise filtering device suitable for high-viscosity and high-impurity-content liquid

Abstract

The invention relates to the technical field of filtering devices, and discloses a precise filtering device suitable for high-viscosity and high-impurity-content liquid, the precise filtering device comprises a filter cartridge body, the upper side of the filter cartridge body is detachably provided with a top cover, and the outer wall of the filter cartridge body is fixedly provided with a liquid inlet flange and a liquid outlet flange; a pressure gauge and a pressure release valve are fixedly arranged on the upper side of the top cover, a blow-off pipe is fixedly arranged on the lower side of the bottom cover, a filter basket is fixed in the filter cartridge body, an integrated filter element is detachably mounted in the filter basket, and a filter screen is arranged below the filter basket. The filter screen, the filter basket and the filter holes of the integrated filter element are sequentially arranged from large to small, and the cleaning liquid is injected through the liquid outlet flange, so that the problems that in the prior art, when high-viscosity and high-impurity-content liquid is filtered, pre-filtering is not needed, the filter screen needs to be frequently disassembled for cleaning, the filter screen cleaning process is tedious and complex, and the cleaning efficiency is high are solved. And the filtering efficiency is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filtering devices, in particular to a precision filtering device suitable for high-viscosity and high-impurity-content liquid. BACKGROUND

[0002] In the field of chemical production, the use of high-viscosity liquid is increasing, and many high-molecular compounds and high-molecular materials are high-viscosity liquid. For example, in the process of preparing polyacrylonitrile-based carbon fiber, the polyacrylonitrile solution has a relatively high molecular weight, and the viscosity can reach tens to hundreds of poise. In order to improve the quality of polyacrylonitrile-based carbon fiber, the polyacrylonitrile solution needs to be precisely filtered to remove solid particles, hard dirt, and colloidal particles that are not completely dissolved.

[0003] At present, in the traditional vertical filtering mode, cross-flow filtration such as spiral groove design is relied on to delay clogging, but this way does not pre-filter the liquid, so the filter screen needs to be frequently disassembled and cleaned, and the cleaning process of the filter screen is complicated, which further leads to low filtering efficiency. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a precision filtering device suitable for high-viscosity and high-impurity-content liquid, which solves the problem of low filtering efficiency in the prior art that there is no pre-filtering when filtering high-viscosity and high-impurity-content liquid, so the filter screen needs to be frequently disassembled and cleaned, and the cleaning process of the filter screen is complicated.

[0005] To achieve the above purpose, the present application is implemented by the following technical scheme: a precision filtering device suitable for high-viscosity and high-impurity-content liquid, comprising a filter cartridge body, a bottom cover threadedly connected to the lower side of the filter cartridge body, a top cover detachably mounted on the upper side of the filter cartridge body, an inlet flange and an outlet flange fixed to the outer wall of the filter cartridge body, a pressure gauge and a pressure relief valve fixedly arranged on the upper side of the top cover, a blowdown pipe fixedly arranged on the lower side of the bottom cover, a filter basket fixed in the filter cartridge body, an integrated filter element detachably mounted in the filter basket, a filter screen arranged below the filter basket, the inlet flange being below the filter screen, the outlet flange being above the integrated filter element, and a jacket assembly for constant temperature fixed to the outer wall of the filter cartridge body.

[0006] Through the above technical scheme: when in use, the liquid is pre-filtered by the filter screen and the filter basket, and then filtered by the integrated filter element, thereby solving the problem of short service life of the filter element in the prior art due to the lack of pre-filtering; and the liquid is injected through the outlet flange, so that the cleaning liquid flows from top to bottom and sequentially cleans the integrated filter element, the filter basket, and the filter screen, thereby solving the problem of low filtering efficiency.

[0007] Preferably, the outer wall of the filter basket is fixed with spiral guide plates inclined at 45 degrees, the lower side of the filter basket is conical in shape, and the lower side of the filter basket is fixed with a circular plate in sharp shape.

[0008] Preferably, the inner wall of the filter cartridge body is fixed with a fixing seat, the end outer wall of the liquid inlet flange is provided with a baffle in abutment, the baffle is rotationally connected with the fixing seat through a rotating rod, the outer wall of the rotating rod is provided with a torsional spring, the two ends of the torsional spring are respectively in abutment with the outer walls of the baffle and the fixing seat, the inner wall of the fixing seat is fixed with a limiting plate, and one side of the limiting plate is in abutment with the outer wall of the baffle.

[0009] Preferably, the upper side of the filter screen is in abutment with a limiting block, one side of the limiting block is fixed on the inner wall of the filter cartridge body, the lower side of the filter screen is fixed with an adjusting assembly, the adjusting assembly comprises an adjusting plate fixed on the lower side of the filter screen, the outer wall of the adjusting plate is in sliding abutment with the outer wall of the baffle, the lower side of the filter screen is slidably provided with an adjusting block, the lower end of the adjusting block is sealed through the lower side of the bottom cover, and the lower end of the adjusting block is fixed with an adjusting handle.

[0010] Preferably, the outer wall of the integrated filter core is fixed with a clamping plate, the outer wall of the filter basket is provided with an L-shaped sliding groove matched with the clamping plate for sliding, the upper side of the clamping plate is fixed with a clamping block, and the inner wall of the filter basket is provided with a clamping groove in abutment with the outer wall of the clamping block.

[0011] Preferably, the inner walls of the liquid inlet flange and the liquid outlet flange are provided with pressure sensors.

[0012] Preferably, the jacket assembly comprises a thermostat tube and a heat preservation sleeve fixed on the outer wall of the filter cartridge body, the thermostat tube is arranged between the filter cartridge body and the heat preservation sleeve, and the two ends of the thermostat tube are in abutment with the outer wall of the heat preservation sleeve.

[0013] Preferably, the inner wall of the filter cartridge body is fixedly provided with a flushing pipe, the outer wall of the filter cartridge body is fixedly provided with a liquid outlet pipe and a solenoid valve one, and the upper end of the thermostat tube, the flushing pipe and one end of the liquid outlet pipe are fixedly arranged on the output end of the solenoid valve one.

[0014] Preferably, the inner wall of the filter cartridge body is fixed with a magnetic ring, and the filter basket is fixed on the inner wall of the filter cartridge body through magnetic adsorption with the magnetic ring.

[0015] Preferably, the lower side of the bottom cover is fixed with a base, the inner wall of the blowdown pipe is fixedly provided with a solenoid valve two, and the outer wall of the base is provided with an adjusting opening.

[0016] Working principle: when in use, the temperature inside the filter cartridge body is maintained through the jacket assembly, and the liquid enters the inside of the filter cartridge body through the liquid inlet flange, flows from bottom to top, and is sequentially intercepted by the filter screen and the filter basket after pre-filtering, and then filtered by the integrated filter element, thereby solving the problem of short service life of the filter element due to the lack of pre-filtering in the prior art; When each filter structure needs to be cleaned, the cleaning liquid is injected through the liquid outlet flange, so that the cleaning liquid flows from top to bottom and washes away the impurities attached to the integrated filter element, filter basket and filter screen in turn, realizing reverse liquid injection and washing, thereby solving the problem of complex cleaning process of the filter screen in the prior art, which further leads to low filtration efficiency.

[0017] The present application provides a precision filtration device suitable for high-viscosity and high-impurity-content liquid. 1、The present application realizes the pre-filtering function of the device by sequentially arranging the filter screen, filter basket and integrated filter element filter holes from large to small, thereby improving the service life of the integrated filter element, and injecting cleaning liquid through the liquid outlet flange, so that the cleaning liquid flows from top to bottom and washes away the impurities attached to the integrated filter element, filter basket and filter screen in turn, thereby improving the filtration efficiency.

[0018] 2、The present application makes the liquid flow along the inner wall of the filter cartridge body through the baffle, reduces the impact on the filter cartridge body, and makes the liquid tangential flow velocity increase and converts laminar flow into turbulent flow through the flow guiding and filter basket inverted conical arrangement, on the basis of stripping the pollutants on the surface of the filter membrane spiral flow guide plate, also solves the problem of linear flow of the liquid from bottom to top, makes the liquid flow path single, leads to flux decay, and affects the filtration efficiency.

[0019] 3、The present application drives the adjusting block to rotate by rotating the adjusting handle, thereby driving the filter screen to rotate, making the position of the adjusting plate change, and adjusting and limiting the maximum rotation angle of the baffle, thereby solving the problem of being unable to adapt to liquids of different viscosities for filtration, and reducing the applicability of the device.

[0020] 4、The present application switches the constant temperature liquid outlet of the electromagnetic valve, realizes the heat preservation effect of the jacket assembly, and also makes the constant temperature liquid enter the inside of the filter cartridge body through the flushing pipe to wash the integrated filter element, filter basket and filter screen in turn, thereby improving the cleaning efficiency of each filter structure in the device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the present application; Figure 2 It is a schematic view of the internal structure of the filter cartridge body of the present application; Figure 3 It is a partial sectional view of the filter basket of the present application; Figure 4 As Figure 3 Enlarged view of the adjusting assembly at A in the middle; Figure 5 Schematic view of the adjusting assembly of the application; Figure 6 Schematic view of the fixed seat of the application; Figure 7 Schematic view of the jacket assembly of the application.

[0022] Wherein, 1, filter cartridge body; 2, pressure relief valve; 3, pressure gauge; 4, liquid outlet flange; 5, jacket assembly; 50, heat preservation sleeve; 51, constant temperature tube; 52, liquid outlet pipe; 53, electromagnetic valve one; 54, flushing pipe; 6, bottom cover; 7, adjusting port; 8, base; 9, blowdown pipe; 10, liquid inlet flange; 11, top cover; 12, integrated filter element; 13, filter basket; 14, filter screen; 15, spiral guide plate; 16, baffle; 17, adjusting assembly; 170, adjusting block; 171, adjusting plate; 172, adjusting handle; 18, magnetic ring; 19, clamping plate; 20, L-shaped sliding groove; 21, clamping groove; 22, clamping block; 23, limiting block; 24, pressure sensor; 25, fixed seat; 26, torsional spring; 27, rotating rod; 28, limiting plate. DETAILED DESCRIPTION

[0023] The technical solutions of the application will be described clearly and completely below with reference to the drawings of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0024] Please refer to the drawings of the application Figure 1 , the drawings of the application Figure 2 and the drawings of the application Figure 3 , the embodiment of the application provides a precise filtering device suitable for high-viscosity and high-impurity-content liquid, which comprises a filter cartridge body 1, a bottom cover 6 threadedly connected to the lower side of the filter cartridge body 1, a top cover 11 detachably mounted on the upper side of the filter cartridge body 1, a liquid inlet flange 10 and a liquid outlet flange 4 fixed to the outer wall of the filter cartridge body 1, a pressure gauge 3 and a pressure relief valve 2 fixedly arranged on the upper side of the top cover 11, a blowdown pipe 9 fixedly arranged on the lower side of the bottom cover 6, a filter basket 13 fixed in the filter cartridge body 1, an integrated filter element 12 detachably mounted in the filter basket 13, a filter screen 14 arranged below the filter basket 13, the liquid inlet flange 10 located below the filter screen 14, the liquid outlet flange 4 located above the integrated filter element 12, and a jacket assembly 5 for constant temperature fixed to the outer wall of the filter cartridge body 1.

[0025] In the embodiment, the filter cartridge body 1 is provided with a filter basket 13, and the filter basket 13 is provided with an integrated filter element 12. Figure 1The front and back and left and right are directions. Among them, the integrated filter core 12 is an integrated assembly of a nuclear pore membrane filter core, a support mesh cover and a sealing ring; the filter screen 14 is 100 μm, the filter basket 13 is 0.5 μm, and the above are reference filter hole sizes; the bottom cover 6, the top cover 11 and the filter cartridge body 1 are all provided with a seal, and the above are all prior art; Specifically, in use, the temperature inside the filter cartridge body 1 is maintained by the jacket assembly 5, and the liquid enters the inside of the filter cartridge body 1 through the liquid inlet flange 10, flows from bottom to top, is filtered by the filter screen 14 to remove large particle impurities, is intercepted by the filter basket 13 to remove medium particle impurities, and then is filtered by the integrated filter core 12 to remove small particle impurities, and then flows out through the liquid outlet flange 4, completing the three-stage filtration of the device, and thus solving the problem of short service life of the filter core due to the lack of pre-filtration in the prior art; When it is necessary to clean the various filter structures, the bottom cover 6 can be removed by threadedly connecting the bottom cover 6 and the filter cartridge body 1, the filter screen 14 is cleaned, the filter basket 13 and the integrated filter core 12 are removed and cleaned, or the integrated filter core 12 is replaced, through the detachable arrangement of the top cover 11; in addition, the liquid inlet flange 10 can be blocked, the cleaning liquid is injected through the liquid outlet flange 4, the cleaning liquid flows from top to bottom, the impurities attached to the integrated filter core 12, the filter basket 13 and the filter screen 14 are washed away in sequence, the bottom of the filter cartridge body 1 is then cleaned, and then the cleaning liquid is discharged through the drain pipe 9, and thus the rapid cleaning of the various filter modules is realized, thereby solving the problem of low filtration efficiency due to the lack of pre-filtration when filtering the liquid with high viscosity and high impurity content in the prior art.

[0026] On the basis of the above embodiment, the linear flow of the liquid from bottom to top makes the path of the liquid flow single, resulting in flux decay and affecting the filtration efficiency. In order to solve the above problem, please refer to the attached Figure 2 and the attached Figure 5 The outer wall of the filter basket 13 is fixed with a 45-degree inclined spiral flow guide plate 15, the lower side of the filter basket 13 is in a conical shape, and the lower side of the filter basket 13 is fixed with a sharp-shaped circular plate.

[0027] Specifically, when the liquid flows, after passing through the filter screen 14, the liquid is guided to both sides through the sharp-shaped circular plate, and the tangential flow velocity of the liquid is improved through the arrangement of the 45-degree inclined spiral flow guide plate 15, so that the laminar flow is converted into turbulent flow, the pollutants on the surface of the spiral flow guide plate 15 are stripped, and the large particle pollutants are further improved along the conical surface to the bottom, which can reduce the load of the integrated filter core 12, thereby solving the problem of linear flow of the liquid from bottom to top, making the path of the liquid flow single, resulting in flux decay and affecting the filtration efficiency.

[0028] On the basis of the above embodiment, the liquid enters the filter cartridge body 1 through the liquid inlet flange 10, which will cause impact on the filter cartridge body 1, resulting in vibration of the filter cartridge body 1, which will affect the service life of the filter cartridge body 1 after a certain period of time. In order to solve the above problems, please refer to the attached Figure 5 and the attached Figure 6 The inner wall of the filter cartridge body 1 is fixed with a fixed seat 25, and the end of the liquid inlet flange 10 is provided with a baffle 16, and the baffle 16 is rotatably connected with the fixed seat 25 through a rotating rod 27, and the outer wall of the rotating rod 27 is provided with a torsional spring 26, and the two ends of the torsional spring 26 are respectively in contact with the outer wall of the baffle 16 and the fixed seat 25. The inner wall of the fixed seat 25 is fixed with a limiting plate 28, and one side of the limiting plate 28 is in contact with the outer wall of the baffle 16.

[0029] Specifically, when the baffle 16 and the liquid inlet flange 10 are in sealing contact, the liquid enters the filter cartridge body 1 through the liquid inlet flange 10, the liquid first overcomes the elastic potential energy of the torsional spring 26 to open the baffle 16, and the baffle 16 is opened to a preset angle through the setting of the limiting plate 28 to adapt to the viscosity of the liquid. The liquid flows along the inner wall of the filter cartridge body 1 by the guidance of the baffle 16, thereby avoiding the direct impact of the liquid on the inner wall of the filter cartridge body 1, and improving the flow efficiency of the liquid.

[0030] On the basis of the above embodiment, the opening and closing angle of the baffle 16 is a preset fixed angle, so that the device cannot adapt to different viscosity liquids for filtering, reducing the applicability of the device. In order to solve the above problems, please refer to the attached Figure 5 and the attached Figure 6 The upper side of the filter screen 14 is in contact with a limiting block 23, one side of the limiting block 23 is fixed on the inner wall of the filter cartridge body 1, and the lower side of the filter screen 14 is fixed with an adjusting assembly 17. The adjusting assembly 17 comprises an adjusting plate 171 fixed on the lower side of the filter screen 14, the outer wall of the adjusting plate 171 is in sliding contact with the outer wall of the baffle 16, and the lower side of the filter screen 14 is slidably provided with an adjusting block 170. The lower end of the adjusting block 170 is sealed through the lower side of the bottom cover 6, and the lower end of the adjusting block 170 is fixed with an adjusting handle 172.

[0031] Specifically, the upper end of the adjusting block 170 is square, and the lower end is cylindrical, and the lower end is rotatably and sealingly connected with the bottom cover 6. When the device is assembled, the baffle 16 is embedded in the inner wall of the filter cartridge body 1 under the action of the torsional spring 26, the liquid inlet flange 10 is blocked, the lower side of the filter screen 14 is clamped into the upper end of the adjusting block 170, the bottom cover 6 is installed to the lower side of the filter cartridge body 1 through the threaded connection between the bottom cover 6 and the filter cartridge body 1, and after fastening, the upper side of the filter screen 14 is in contact with the lower side of the limiting block 23. By rotating the adjusting handle 172, the filter screen 14 is rotated to the appropriate position, and in this process, the adjusting block 170 and the bottom cover 6 have a predetermined rotational friction, so that the liquid cannot drive the baffle 16 to rotate the adjusting plate 171, and the baffle 16 can also be pried open by the liquid inlet flange 10 to determine the position of the adjusting plate 171, preset the adjustment, and complete the assembly of the device. When it is necessary to adjust the position of the baffle 16 to adapt to liquids of different viscosities, the adjusting handle 172 is rotated to drive the adjusting block 170 to rotate, and then the filter screen 14 is rotated to limit the rotation angle of the baffle 16, thereby solving the problem that the device cannot adapt to liquids of different viscosities for filtering, and reducing the applicability of the device.

[0032] Please refer to the accompanying Figure 3 and the accompanying Figure 4 The outer wall of the integrated filter element 12 is fixed with a clamping plate 19, the outer wall of the filter basket 13 is provided with an L-shaped sliding groove 20 matched with the clamping plate 19, the upper side of the clamping plate 19 is fixed with a clamping block 22, and the inner wall of the filter basket 13 is provided with a clamping groove 21 matched with the outer wall of the clamping block 22.

[0033] Specifically, the outer wall of the clamping plate 19 passes through both sides of the integrated filter element 12, and the integrated filter element 12 has sealing pads at the top and bottom positions in contact with the filter basket 13, so that when the integrated filter element 12 is installed, the integrated filter element 12 is placed inside the filter basket 13, the clamping plate 19 is slid into the horizontal groove of the L-shaped sliding groove 20, and the integrated filter element 12 is rotated by tools to make the clamping plate 19 slide into the L-shaped sliding groove 20, and the clamping block 22 slides into the clamping groove 21, thereby completing the installation of the integrated filter element 12. When the liquid impacts the integrated filter element 12 from bottom to top, the clamping block 22 and the clamping groove 21 are tightly attached, and interference makes the clamping plate 19 unable to slide out of the L-shaped sliding groove 20, thereby realizing convenient installation and disassembly of the integrated filter element 12, and improving the stability.

[0034] On the basis of the above embodiment, the filter structure in the device needs to be cleaned regularly, but due to the inability to directly and timely determine the remaining amount of each filter structure, it is easy to cause early or late cleaning, resulting in the problem of reduced production efficiency. In order to solve the above problem, please refer to the accompanying Figure 1 and the accompanying Figure 6The inner wall of the liquid inlet flange 10 and the liquid outlet flange 4 is provided with a pressure sensor 24.

[0035] Specifically, the device is further electrically connected with a control background, through the connection of the pressure sensor 24 and the control background, so that the control background can monitor the pressure condition of the input and output of the device in real time, when the pressure difference exceeds the preset range, it means that the cleaning and filtering structure needs to be cleaned, thereby realizing the accurate determination of the running state of the device.

[0036] Please refer to the attached Figure 1 and the attached Figure 7 The jacket assembly 5 includes a thermostat tube 51 fixed to the outer wall of the filter cartridge body 1 and a heat preservation sleeve 50, the thermostat tube 51 is arranged between the filter cartridge body 1 and the heat preservation sleeve 50, and the outer wall of both ends of the thermostat tube 51 penetrates the outer wall of the heat preservation sleeve 50.

[0037] Specifically, the temperature of the liquid filtered in the filter cartridge body 1 is passed through the thermostat tube 51, and temperature sensors are arranged at the inlet and outlet of the thermostat tube 51, and the temperature of the thermostat liquid is adjusted in real time through the processing and analysis of the control background, thereby helping to improve the filtering efficiency of the device.

[0038] On the basis of the above embodiment, when it is necessary to flush and clean the inside of the device, the liquid outlet flange 4 needs to be disassembled or injected with cleaning liquid, which has the problem of low cleaning efficiency, in order to solve the above problem, please refer to the attached Figure 7 The inner wall of the filter cartridge body 1 is fixedly provided with a flushing pipe 54, the outer wall of the filter cartridge body 1 is fixedly provided with a liquid outlet pipe 52 and a solenoid valve one 53, and the upper end of the thermostat tube 51, the flushing pipe 54 and one end of the liquid outlet pipe 52 are fixedly arranged at the output end of the solenoid valve one 53.

[0039] Specifically, the solenoid valve one 53 is a three-way solenoid valve, when the thermostat is performed, the solenoid valve one 53 is disconnected with the flushing pipe 54, so that the thermostat tube 51 and the liquid outlet pipe 52 are connected, and the liquid is replaced and the thermostat is performed, when the cleaning is needed, the solenoid valve one 53 is disconnected with the liquid outlet pipe 52, so that the flushing pipe 54 and the thermostat tube 51 are connected, the thermostat liquid flows into the inside of the filter cartridge body 1 through the flushing pipe 54, and flows from top to bottom, so as to flush the integrated filter element 12, the filter basket 13 and the filter screen 14, thereby improving the cleaning efficiency.

[0040] Please refer to the attached Figure 2 and the attached Figure 3 The inner wall of the filter cartridge body 1 is fixedly provided with a magnetic ring 18, and the filter basket 13 is fixedly arranged on the inner wall of the filter cartridge body 1 through magnetic adsorption with the magnetic ring 18.

[0041] Specifically, the positions of the filter basket 13 and the magnetic ring 18 are of magnetic material, and the adsorption forces of the two have a certain strength, and a sealing gasket is arranged between the two, which can realize sealing while preventing the liquid from separating the two, thereby improving the disassembly efficiency of the filter basket 13.

[0042] Please refer to the accompanying drawings Figure 1 The lower side of the bottom cover 6 is fixed with a base 8, and the inner wall of the blowdown pipe 9 is fixedly provided with a solenoid valve two, and the outer wall of the base 8 is provided with an adjusting opening 7.

[0043] Specifically, when the impurities need to be discharged, the blowdown pipe 9 is opened by the solenoid valve two, and the impurities are discharged through the blowdown pipe 9, and the setting of the adjusting opening 7 improves the convenience of adjusting the rotation angle of the baffle 16.

[0044] Work flow: when in use, the temperature inside the filter cartridge body 1 is maintained by the jacket assembly 5, the adjusting handle 172 is rotated to drive the adjusting block 170 to rotate, thereby driving the filter screen 14 to rotate, so that the position of the adjusting plate 171 is changed, and the maximum rotation angle of the baffle 16 is adjusted, thereby improving the applicability of the device; Then, the liquid enters the inside of the filter cartridge body 1 through the liquid inlet flange 10, and the liquid flows along the inner wall of the filter cartridge body 1 through the baffle 16, which reduces the impact on the filter cartridge body 1, and the liquid is filtered to large-particle impurities through the filter screen 14, and then guided and filtered by the spiral flow guide plate 15 and the inverted conical arrangement of the filter basket 13, so that the liquid tangential flow rate is improved to convert laminar flow into turbulent flow, and on the basis of stripping the pollutants on the surface of the spiral flow guide plate 15, the liquid flux is also improved; Then, the liquid is intercepted and filtered again by the filter basket 13, and then small-particle impurities are filtered out by the integrated filter element 12, and then flows out through the liquid outlet flange 4, completing the three-stage filtration of the device, and thereby solving the problem of short service life of the filter element in the prior art due to the lack of pre-filtration; When it is necessary to clean the various filtering structures, the filter screen 14, the filter basket 13 and the integrated filter element 12 can be taken out and cleaned by disassembling the bottom cover 6 and the top cover 11; the integrated filter element 12, the filter basket 13 and the filter screen 14 can also be cleaned in turn by injecting cleaning liquid through the liquid outlet flange 4 to realize reverse cleaning; in addition, the integrated filter element 12, the filter basket 13 and the filter screen 14 can also be washed in turn by the constant-temperature liquid entering the inside of the filter cartridge body 1 through the flushing pipe 54 with the cooperation of the solenoid valve one 53, thereby improving the filtering efficiency of the device.

[0045] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A precision filtering device suitable for high viscosity and high impurity content liquid, comprising a filter cartridge body (1), a bottom cover (6) is threadedly connected to the lower side of the filter cartridge body (1), a top cover (11) is detachably installed on the upper side of the filter cartridge body (1), a liquid inlet flange (10) and a liquid outlet flange (4) are fixed to the outer wall of the filter cartridge body (1), characterized in that, The upper side of the top cover (11) is fixedly provided with a pressure gauge (3) and a pressure relief valve (2), the lower side of the bottom cover (6) is fixedly provided with a blowdown pipe (9), the inside of the filter cartridge body (1) is fixedly provided with a filter basket (13), the inside of the filter basket (13) is detachably provided with an integrated filter element (12), the lower side of the filter basket (13) is provided with a filter screen (14), the liquid inlet flange (10) is located below the filter screen (14), the liquid outlet flange (4) is located above the integrated filter element (12), and the outer wall of the filter cartridge body (1) is fixedly provided with a jacket assembly (5) for constant temperature.

2. A precision filtration device suitable for use with high viscosity, high impurity content liquids according to claim 1, wherein, The outer wall of the filter basket (13) is fixedly provided with a 45-degree inclined spiral guide plate (15), the lower side of the filter basket (13) is conical, and the lower side of the filter basket (13) is fixedly provided with a sharp-shaped circular plate.

3. A precision filtration device suitable for use with high viscosity, high impurity content liquids as claimed in claim 1, wherein, The inner wall of the filter cartridge body (1) is fixedly provided with a fixed seat (25), the end outer wall of the liquid inlet flange (10) is abutted with a baffle (16), the baffle (16) is rotatably connected with the fixed seat (25) through a rotating rod (27), the outer wall of the rotating rod (27) is provided with a torsional spring (26), the two ends of the torsional spring (26) are respectively abutted with the outer walls of the baffle (16) and the fixed seat (25), the inner wall of the fixed seat (25) is fixedly provided with a limiting plate (28), and one side of the limiting plate (28) is abutted with the outer wall of the baffle (16).

4. A precision filtration device suitable for use with high viscosity, high impurity content liquids according to claim 3, wherein, The upper side of the filter screen (14) is abutted with a limiting block (23), one side of the limiting block (23) is fixed to the inner wall of the filter cartridge body (1), the lower side of the filter screen (14) is fixedly provided with an adjusting assembly (17), the adjusting assembly (17) comprises an adjusting plate (171) fixed to the lower side of the filter screen (14), the outer wall of the adjusting plate (171) is slidably abutted with the outer wall of the baffle (16), the lower side of the filter screen (14) is slidably provided with an adjusting block (170), the lower end of the adjusting block (170) is sealed through the lower side of the bottom cover (6), and the lower end of the adjusting block (170) is fixedly provided with an adjusting handle (172).

5. A precision filter device suitable for use with high viscosity, high impurity content liquids as claimed in claim 1, wherein, The outer wall of the integrated filter element (12) is fixedly provided with a clamping plate (19), the outer wall of the filter basket (13) is provided with an L-shaped sliding groove (20) matched with the clamping plate (19) for sliding, the upper side of the clamping plate (19) is fixedly provided with a clamping block (22), and the inner wall of the filter basket (13) is provided with a clamping groove (21) abutted with the outer wall of the clamping block (22).

6. A precision filtration device suitable for use with high viscosity, high impurity content liquids as claimed in claim 1, wherein, The inner walls of the liquid inlet flange (10) and the liquid outlet flange (4) are provided with pressure sensors (24).

7. A precision filtration device suitable for use with high viscosity, high impurity content liquids as claimed in claim 1, wherein, The jacket assembly (5) comprises a constant temperature pipe (51) and a heat preservation sleeve (50) fixed to the outer wall of the filter cartridge body (1), the constant temperature pipe (51) is arranged between the filter cartridge body (1) and the heat preservation sleeve (50), and the outer walls of the two ends of the constant temperature pipe (51) pass through the outer wall of the heat preservation sleeve (50).

8. A precision filtration device suitable for use with high viscosity, high impurity content liquids according to claim 7, wherein, The inner wall of the filter cartridge body (1) is fixedly provided with a flushing pipe (54), the outer wall of the filter cartridge body (1) is fixedly provided with a liquid outlet pipe (52) and a solenoid valve (53), and the upper end of the constant temperature pipe (51), the flushing pipe (54) and one end of the liquid outlet pipe (52) are all fixedly arranged at the output end of the solenoid valve (53).

9. A precision filtration device suitable for use with high viscosity, high impurity content liquids as claimed in claim 1, wherein, The inner wall of the filter cartridge body (1) is fixedly provided with a magnetic ring (18), and the filtering basket (13) is fixedly arranged on the inner wall of the filter cartridge body (1) through magnetic adsorption of the magnetic ring (18).

10. A precision filtration device suitable for use with high viscosity, high impurity content liquids as claimed in claim 1, wherein, The lower side of the bottom cover (6) is fixedly provided with a base (8), the inner wall of the blowdown pipe (9) is fixedly provided with a solenoid valve (2), and the outer wall of the base (8) is provided with an adjusting opening (7).

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