Lyocell fiber solvent filtering and separating device

Abstract

The invention discloses a lyocell fiber solvent filtering and separating device which comprises a microporous filtering tank, an activated carbon filter, a waste liquid container, a water storage container, an electric appliance control box and a solvent storage tank, a head sealing tank cover is arranged at the upper end of the microporous filtering tank in advance, and a bottom sealing funnel is fixedly installed at the bottom of the microporous filtering tank; a filter element assembly bearing plate is fixedly mounted at the lower end of the interior of the microporous filtering tank, a microporous filter element is movably mounted at the upper end of the filter element assembly bearing plate, a liquid inlet pump is fixedly mounted on one side of an activated carbon filter, and a liquid feeding guide pipe is fixedly mounted on the other side of the activated carbon filter; and the activated carbon filter is communicated with the interior of the bottom-sealed funnel through a liquid feeding guide pipe. The whole structure is optimized and improved, and multiple devices are integrated and associated through pipelines, so that the whole working steps and links are simplified, and the whole normal use work is more efficient and stable.

Description

Technical Field

[0001] The invention relates to the technical field of lyocell fiber production, in particular to a lyocell fiber solvent filtering and separating device. Background Art

[0002] In the production process of Lyocell fiber, the solvent N-methylmorpholine oxide (NMMO) needs to be recycled to reduce costs and environmental pollution. However, the existing solvent filtration and separation technology has problems such as low filtration efficiency, large solvent loss, and easy corrosion of equipment, resulting in a short overall service life.

[0003] The overall structure of the solvent separation and filtration devices currently available on the market is relatively complex, with many processes, making it difficult to efficiently perform solvent filtration and separation operations on lyocell fibers.

[0004] Based on this, the present invention proposes a lyocell fiber solvent filtering and separation device to solve the above problems. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of the present invention to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above-mentioned and / or existing problems in the design of the existing lyocell fiber solvent filtering and separation equipment, the present invention is proposed.

[0007] Therefore, one of the objects of the present invention is to provide a lyocell fiber solvent filtering and separation device, which optimizes and improves the overall structure, integrates multiple devices and connects them through pipelines, so that the overall working steps and links are simplified, and the overall normal use work is more efficient and stable. By optimizing and integrating the filtration structure, a membrane separator is added on the basis of being equipped with a microporous filtration structure and an activated carbon filtration structure, thereby effectively improving the overall work efficiency.

[0008] To achieve the above-mentioned effect, the present invention provides the following technical scheme: a lyocell fiber solvent filtering and separating device, comprising a microporous filter tank, an activated carbon filter, a waste liquid container, a water storage container, an electrical control box and a solvent storage tank, the upper end of the microporous filter tank is preset with a head tank cover, the bottom of the microporous filter tank is fixedly installed with a bottom funnel, the lower end position of the interior of the microporous filter tank is fixedly installed with a filter element assembly supporting plate, the upper end of the filter element assembly supporting plate is movably installed with a microporous filter element, a liquid inlet pump is fixedly installed at one side of the activated carbon filter, a liquid delivery conduit is fixedly installed at the other side of the activated carbon filter, the activated carbon filter is connected to the inside of the bottom funnel through the liquid delivery conduit, a diversion pump is fixedly installed at the inner side of the upper end of the head tank cover, the outside of the diversion pump is fixedly connected with an associated conduit, the bottom of the associated conduit is fixedly connected with a shunt pipe, and the bottom of the shunt pipe is fixedly connected with a membrane separator.

[0009] As a preferred solution of the lyocell fiber solvent filtering and separation device of the present invention, wherein: the outer ring position of the filter element assembly carrier plate is symmetrically provided with permeation holes at equal intervals in an annular manner, the inner ring position of the filter element assembly carrier plate is symmetrically provided with positioning assembly through holes at equal intervals in an annular manner, the inner diameter size of the positioning assembly through holes and the outer diameter size of the microporous filter element correspond to each other, the lower end position of the outside of the microporous filter element is symmetrically fixedly provided with an alignment assembly block at equal intervals in an annular manner, the inner upper end of the positioning assembly through hole is symmetrically provided with positioning grooves at equal intervals in an annular manner, the opening position of the positioning groove inside the positioning assembly through hole and the fixed installation position of the alignment assembly block outside the microporous filter element correspond to each other, and the external specifications of the alignment assembly block and the internal specifications of the positioning groove are adapted to each other; By adopting an assembled structure of aligning plug-in card and rotating clamping between the microporous filter element and the filter element assembly carrier plate, the filter element can be replaced regularly according to the wear of the internal filter element during the long-term use of the equipment, which helps to ensure the working performance and overall service life of the equipment.

[0010] As a preferred solution of the lyocell fiber solvent filtering and separation device of the present invention, wherein: a rotating clamping groove is preset at the side position of the bottom of the positioning clamping groove, the groove specifications of the rotating clamping groove correspond to the external specifications of the alignment assembly block, and a drainage conduit is fixedly connected between the diversion pump and the head tank cover, and the diversion pump is connected to the inside of the head tank cover through the drainage conduit; By setting the diversion pump at the corresponding position of the head tank cover, the solvent can make full use of the structural characteristics of the microporous filter element under the action of pumping to achieve a fine filtration effect, thereby ensuring that the solvent at the head tank cover position is the solvent that achieves the best filtration effect and can enter the subsequent separation link, ensuring the overall filtration effect of the solvent, which in turn helps to improve the overall filtration work efficiency.

[0011] As a preferred solution of the lyocell fiber solvent filtering and separation device of the present invention, wherein: a diversion elbow is fixedly connected to the bottom of the bottom-sealed funnel, a waste liquid pump is fixedly installed at the end position of the diversion elbow, a waste liquid diversion pipe is fixedly connected to the side position of the waste liquid pump, a waste liquid inlet pipe is preset at the side position of the lower end of the outside of the waste liquid container, the waste liquid diversion pipe is connected to the inside of the waste liquid container through the waste liquid inlet pipe, a waste liquid outlet is preset at the side position of the lower end of the outside of the waste liquid container, and a waste liquid solenoid valve is preset outside the waste liquid outlet; By adding a waste liquid container, the impurities filtered in the microporous filter tank can be fully discharged to the outside, thereby achieving a pure filtration effect. It is also more convenient to perform internal backwashing operations on the microporous filter tank after filtration, reducing the impact of residual impurities inside the microporous filter tank on subsequent filtration work.

[0012] As a preferred solution of the lyocell fiber solvent filtering and separation device of the present invention, wherein: a plug-in plate frame is preset inside the activated carbon filter, the external specifications of the plug-in plate frame correspond to the internal specifications of the activated carbon filter, a liquid inlet conduit is preset at the side position of the liquid inlet pump, the plug-in plate frame is a hollow frame structure as a whole, and the liquid inlet pump is connected to the inside of the activated carbon filter; By designing the plug plate frame as a hollow frame structure as a whole, it is possible to achieve a better solvent impurity adsorption effect while ensuring that the internal fluidity of the activated carbon filter is not affected.

[0013] As a preferred solution of the lyocell fiber solvent filtering and separating device of the present invention, a rotation positioning hole is provided at the middle position of the upper end and the bottom of the plug-in plate frame, a rotating rod is movably installed at the middle position inside the plug-in plate frame, a positioning rotating member is fixedly installed at the upper end and the lower end of the rotating rod, the external specification of the positioning rotating member and the internal specification of the rotation positioning hole are mutually adapted, a rotating handle is fixedly connected to the upper end of the rotating rod, a positioning fastening bolt is fixedly installed at the bottom of the rotating rod, a positioning threaded sleeve is preset at the middle position of the bottom of the activated carbon filter, and the internal thread specification of the positioning threaded sleeve and the external thread specification of the positioning fastening bolt are mutually adapted; Through the adaptation structure design of the positioning fastening bolts and the positioning threaded sleeves, combined with the adaptation structure of the plug-in plate frame and the inside of the activated carbon filter, the overall sealing of the activated carbon filter is effectively guaranteed, and it has the effect of free disassembly, assembly and maintenance, which enriches the overall functionality.

[0014] As a preferred solution of the lyocell fiber solvent filtering and separating device of the present invention, the plug-in plate frame is provided with plug-in plate grooves symmetrically at the upper and lower ends thereof, an activated carbon filter plate is movably installed inside the plug-in plate frame, and alignment plug-in blocks are symmetrically fixedly installed at the upper and lower ends thereof, and the external specifications of the alignment plug-in blocks correspond to the internal specifications of the plug-in plate grooves, and the assembly plug-in blocks are symmetrically fixedly installed at the side positions on both sides of the external side of the plug-in plate frame, and the side positions on both sides of the internal side of the activated carbon filter are symmetrically provided with limiting slots, and the internal specifications of the limiting slots correspond to the external specifications of the assembly plug-in blocks; Through the plug-in structure design of the activated carbon filter plate in the plug-in plate frame, the activated carbon filter can perform regular replacement and maintenance of the carbon bed according to actual usage needs during the normal use of the equipment, and the overall application flexibility has been effectively improved to a great extent.

[0015] As a preferred solution of the lyocell fiber solvent filtration and separation device of the present invention, wherein: a separation membrane stack is preset inside the membrane separator, a sealing inspection cover is preset outside the membrane separator, a confluence pipe is fixedly connected to the bottom of the membrane separator, a solvent inlet is preset at the middle position of the upper end of the solvent storage tank, the membrane separator is connected to the solvent inlet through the confluence pipe, and is connected to the inside of the solvent storage tank; The setting of membrane separator greatly improves the overall filtration intensity.

[0016] As a preferred solution of the lyocell fiber solvent filtering and separation device of the present invention, wherein: a water inlet is preset at the middle position of the upper end of the water storage container, a water outlet with a valve is preset at the side position of the lower end of the outer side of the water storage container, a water inlet associated port is preset at the lower end position of the inner side of the water storage container, a water inlet guide pipe is fixedly connected to the outside of the water inlet associated port, a backwash pump is fixedly connected to the end of the water inlet guide pipe, a water inlet drainage pipe is fixedly connected to the other side of the backwash pump, the water inlet drainage pipe and the inside of the drainage elbow are interconnected and communicated, and a control solenoid valve is preset on the outside of the water inlet drainage pipe; By setting up the backwash pump, the microporous filter tank as a whole has a backwashing function, which is beneficial to prolonging the overall service life and has extremely broad application prospects.

[0017] As a preferred embodiment of the lyocell fiber solvent filtering and separation device of the present invention, a touch screen is preset at the upper end of the outer side of the electrical control box, a control button is preset at the lower end of the touch screen, a current generating device is fixedly installed at the upper end of the inner side of the outer side of the solvent storage tank, a cathode winding is preset at the lower end of the outer side of the solvent storage tank, the current generating device and the cathode winding are connected in series with each other, a solvent outlet is preset at the side of the lower end of the outer side of the solvent storage tank, and the electrical control box is electrically connected to the diversion pump, the liquid inlet pump, the waste liquid solenoid valve, the waste liquid pump, the backwash pump, the control solenoid valve and the current generating device; By adopting a structure in which the current generating device and the cathode winding are connected in series, current can be applied to the surface of the equipment to form a protective potential, thereby preventing the occurrence of corrosion, effectively improving the anti-corrosion performance of the solvent storage tank, and being suitable for the filtration and storage operations of a variety of solvents.

[0018] Beneficial effects of the present invention: The present invention optimizes and improves the overall structure, integrates multiple devices and connects them through pipelines, so that the overall working steps and links are simplified, and the overall normal use work is more efficient and stable. By optimizing and integrating the filtration structure, a membrane separator is added on the basis of being equipped with a microporous filtration structure and an activated carbon filtration structure, which effectively improves the overall work efficiency. The improved design of each filtration structure can enrich the overall functionality on the basis of improving the overall work efficiency and work stability. The microporous filter adopts an assembled structure that is easy to replace and disassemble, which is conducive to regular disassembly and replacement operations. The sealed plug-in structure of the activated carbon filter is effective on the basis of not affecting the connectivity of the overall pipeline, making it easier to replace the carbon bed, which is convenient for regular replacement and maintenance. A backwashing function is also added to the whole to remove blocked impurities and maintain the filtration efficiency. At the same time, the solvent storage tank, as a key component of the equipment, adopts cathodic protection technology. By applying current on the surface of the equipment, a protective potential is formed to prevent the occurrence of corrosion, which is conducive to extending the overall service life and effectively expanding the overall scope of application, thereby having a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 This is a schematic diagram of the front structure of the present invention in a disassembled state; Figure 2 This is a schematic diagram of the back structure of the present invention in a disassembled state; Figure 3 It is a schematic diagram of the overall front structure of the present invention; Figure 4 It is a schematic diagram of the overall back structure of the present invention; Figure 5 This is a schematic diagram of the structure of the microporous filter element assembly of the present invention; Figure 6 It is a bottom view structural schematic diagram of the microporous filter element assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the microporous filter element after assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the microporous filter element of the present invention after assembly; Fig. 9 This is a schematic diagram of the structure of the activated carbon filter in the disassembled state of the present invention; Fig.10 This is a schematic diagram of the front structure of the board frame of the present invention; Fig.11 This is a schematic diagram of the back structure of the board frame of the present invention; Fig.12 It is a perspective view of the internal structure of the activated carbon filter supporting frame of the present invention; Fig.13 For the present invention Figure 5 Enlarged structural diagram at A in the middle.

[0020] Numbers in the figure: 1. Microporous filter tank; 101. Head tank cover; 102. Bottom funnel; 103. Filter element assembly bearing plate; 104. Diversion elbow; 105. Microporous filter element; 106. Drainage catheter; 107. Diversion pump; 108. Associated catheter; 109. Diverter; 110. Membrane separator; 111. Separation membrane stack; 112. Sealing inspection cover; 113. Converging pipe; 114. Permeation hole; 115. Positioning assembly through hole; 116. Positioning card slot; 117. Rotation clamping slot; 118. Alignment assembly card block; 2. Activated carbon filter; 201. Liquid inlet pump; 202. Liquid delivery catheter; 203. Liquid inlet catheter; 204. Insertion plate frame; 205. Rotation positioning hole; 206. Rotation rod; 207. Positioning rotating part; 208. Rotation handle; 209 , plug-in slot; 210, activated carbon filter plate; 211, alignment plug-in block; 212, assembly plug-in block; 213, limit slot; 214, positioning threaded sleeve; 215, alignment fastening bolt; 3, waste liquid container; 301, waste liquid outlet; 302, waste liquid solenoid valve; 303, waste liquid inlet pipe; 304, waste liquid pump; 305, waste liquid diversion pipe; 4, water storage container; 401, water inlet; 402, water outlet with valve; 403, water inlet associated port; 404, water inlet diversion pipe; 405, backwash pump; 406, water inlet diversion pipe; 407, control solenoid valve; 5, electrical control box; 501, touch screen; 502, control button; 6, solvent storage tank; 601, solvent inlet; 602, current generating device; 603, cathode winding; 604, solvent outlet. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Example 1 Reference Figure 1 to Figure 13, which is the first embodiment of the present invention, and provides a lyocell fiber solvent filtering and separating device, including a microporous filtering tank 1, a head tank cover 101, a bottom funnel 102, a filter element assembly bearing plate 103, a diversion elbow 104, a microporous filter element 105, a drainage conduit 106, a diversion pump 107, an associated conduit 108, a shunt pipe 109, a membrane separator 110, a separation membrane stack 111, a sealing inspection cover 112, a confluence pipe 113, a permeation hole 114, a positioning assembly through hole 115, a positioning card slot 116, a rotation clamping slot 117, an alignment assembly card block 118, an activated carbon filter 2, a liquid inlet pump 201, a liquid delivery conduit 202, a liquid inlet conduit 203, a plug-in plate frame 204, a rotation positioning Hole 205, rotating rod 206, positioning rotating member 207, rotating handle 208, plug plate slot 209, activated carbon filter plate 210, alignment plug block 211, assembly plug block 212, limit slot 213, positioning threaded sleeve 214, alignment fastening bolt 215, waste liquid container 3, waste liquid outlet 301, waste liquid solenoid valve 302, waste liquid inlet pipe 303, waste liquid pump 304, waste liquid diversion pipe 305, water storage container 4, water inlet 401, valved water outlet 402, water inlet associated port 403, water inlet diversion pipe 404, backwash pump 405, water inlet diversion pipe 406, control solenoid valve 407, electrical control box 5, touch screen 501, control button 502, solvent storage tank 6, solvent inlet 601, a current generating device 602, a cathode winding 603 and a solvent outlet 604, a head tank cover 101 is preset at the upper end of the microporous filter tank 1, a bottom funnel 102 is fixedly installed at the bottom of the microporous filter tank 1, a filter element assembly carrier plate 103 is fixedly installed at the lower end position inside the microporous filter tank 1, a microporous filter element 105 is movably installed at the upper end of the filter element assembly carrier plate 103, a liquid inlet pump 201 is fixedly installed at one side of the activated carbon filter 2, a liquid delivery conduit 202 is fixedly installed at the other side of the activated carbon filter 2, the activated carbon filter 2 is connected to the inside of the bottom funnel 102 through the liquid delivery conduit 202, and a diversion pump 107 is fixedly installed at the inner side of the upper end of the head tank cover 101, The outside of the diversion pump 107 is fixedly connected to an associated conduit 108, the bottom of the associated conduit 108 is fixedly connected to a shunt pipe 109, the bottom of the shunt pipe 109 is fixedly connected to a membrane separator 110, the outer ring position of the filter element assembly carrier plate 103 is symmetrically provided with permeation holes 114 at annular equal intervals, the inner ring position of the filter element assembly carrier plate 103 is symmetrically provided with positioning assembly through holes 115 at annular equal intervals, the inner diameter of the positioning assembly through hole 115 and the outer diameter of the microporous filter element 105 correspond to each other, the lower end position of the outside of the microporous filter element 105 is symmetrically fixed with a positioning assembly block 118 at annular equal intervals, and the upper end of the inner part of the positioning assembly through hole 115 is symmetrically provided with positioning card grooves 116 at annular equal intervals.The opening position of the positioning slot 116 inside the positioning assembly through hole 115 and the fixed installation position of the alignment assembly block 118 outside the microporous filter element 105 correspond to each other, and the external specifications of the alignment assembly block 118 are adapted to the internal specifications of the positioning slot 116. A rotating clamping slot 117 is preset at the side position of the bottom of the positioning slot 116. The internal specifications of the rotating clamping slot 117 correspond to the external specifications of the alignment assembly block 118. A drainage duct 106 is fixedly connected between the diversion pump 107 and the head tank cover 101. The diversion pump 107 is connected to the inside of the head tank cover 101 through the drainage duct 106. The bottom of the bottom funnel 102 is fixedly connected to a diversion elbow 104. A waste liquid pump 304 is fixedly installed at the end position of the flow bend 104, and a waste liquid guide pipe 305 is fixedly connected to the side position of the waste liquid pump 304. A waste liquid inlet pipe 303 is preset at the side position of the lower end of the outside of the waste liquid container 3, and the waste liquid guide pipe 305 is connected to the inside of the waste liquid container 3 through the waste liquid inlet pipe 303. A waste liquid outlet 301 is preset at the side position of the lower end of the outside of the waste liquid container 3, and a waste liquid solenoid valve 302 is preset outside the waste liquid outlet 301. A plug-in plate frame 204 is preset inside the activated carbon filter 2, and the external specifications of the plug-in plate frame 204 correspond to the internal specifications of the activated carbon filter 2. A liquid inlet conduit 203 is preset at the side position of the liquid inlet pump 201, and the plug-in plate frame 204 is a hollow frame as a whole. The structure is that the liquid inlet pump 201 is connected with the inside of the activated carbon filter 2, and a rotation positioning hole 205 is provided at the middle position of the upper end and the bottom of the plug plate frame 204. A rotating rod 206 is movably installed at the middle position inside the plug plate frame 204, and a positioning rotating member 207 is fixedly installed at the upper and lower ends of the rotating rod 206. The external specifications of the positioning rotating member 207 are adapted to the internal specifications of the rotation positioning hole 205. A rotating handle 208 is fixedly connected to the upper end of the rotating rod 206, and a positioning fastening bolt 215 is fixedly installed at the bottom of the rotating rod 206. A positioning threaded sleeve 214 is preset at the middle position of the bottom of the activated carbon filter 2, and the internal thread specifications of the positioning threaded sleeve 214 are adapted to the internal specifications of the positioning fastening bolt 215. The external thread specifications are adapted to each other, and the upper and lower ends of the plug frame 204 are symmetrically provided with plug slots 209. An activated carbon filter plate 210 is movably installed inside the plug frame 204. The upper and lower ends of the activated carbon filter plate 210 are symmetrically fixed with alignment plug blocks 211. The external specifications of the alignment plug blocks 211 correspond to the internal specifications of the plug slots 209. Assembly plug blocks 212 are symmetrically fixedly installed at the sides of the outside of the plug frame 204. The side positions of the two sides of the inside of the activated carbon filter 2 are symmetrically provided with limiting slots 213. The internal specifications of the limiting slots 213 correspond to the external specifications of the assembly plug blocks 212. The membrane separator 110 is preset with a separation membrane stack 111.A sealed inspection cover 112 is preset on the outside of the membrane separator 110, a confluence pipe 113 is fixedly connected to the bottom of the membrane separator 110, a solvent inlet 601 is preset at the middle position of the upper end of the solvent storage tank 6, the membrane separator 110 is connected to the solvent inlet 601 through the confluence pipe 113, and is connected to the inside of the solvent storage tank 6, a water inlet 401 is preset at the middle position of the upper end of the water storage container 4, a valved water outlet 402 is preset at the side position of the lower end of the outer side of the water storage container 4, a water inlet associated port 403 is preset at the lower end position of the inner side of the water storage container 4, a water inlet guide pipe 404 is fixedly connected to the outside of the water inlet associated port 403, a backwash pump 405 is fixedly connected to the end of the water inlet guide pipe 404, a water inlet drainage pipe 406 is fixedly connected to the other side of the backwash pump 405, and the water inlet drainage pipe 406 is fixedly connected to the other side of the backwash pump 405. 406 is interconnected with the inside of the diversion elbow 104, a control solenoid valve 407 is preset on the outside of the water inlet diversion pipe 406, a touch screen 501 is preset on the upper end of the outer side of the electrical control box 5, and a control button 502 is preset on the lower end of the touch screen 501. A current generating device 602 is fixedly installed on the upper end of the inner side of the solvent storage tank 6, and a cathode winding 603 is preset on the lower end of the solvent storage tank 6. The current generating device 602 and the cathode winding 603 are connected in series with each other, and a solvent outlet 604 is preset on the side of the lower end of the solvent storage tank 6. The electrical control box 5 is electrically connected to the diversion pump 107, the liquid inlet pump 201, the waste liquid solenoid valve 302, the waste liquid pump 304, the backwash pump 405, the control solenoid valve 407 and the current generating device 602.

[0025] Example 2 Reference Figure 1 to Figure 13 , which is the second embodiment of the present invention, and this embodiment is located above the previous embodiment.

[0026] The device adopts an assembled structure of aligning, plug-in and rotating clamping between the microporous filter element 105 and the filter element assembly carrier plate 103, which can regularly replace the filter element according to the wear of the internal filter element during the long-term use of the device, which helps to ensure the working performance and overall service life of the device. By arranging the diversion pump 107 at the corresponding position of the head tank cover 101, the solvent can make full use of the structural characteristics of the microporous filter element 105 under the action of pumping to achieve a fine filtering effect, thereby ensuring that the solvent at the position of the head tank cover 101 is the most The solvent with the best filtering effect can enter the subsequent separation link, ensuring the overall filtering effect of the solvent, which helps to improve the overall filtering efficiency. By adding a waste liquid container 3, the impurities filtered in the microporous filter tank 1 can be fully discharged to the outside, thereby achieving a pure filtering effect, and it is also more convenient to perform internal backwashing operations on the microporous filter tank 1 after filtration, reducing the impact of residual impurities in the microporous filter tank 1 on subsequent filtering work. By designing the plug-in frame 204 as a hollow frame structure, it is possible to ensure that the internal flowability of the activated carbon filter 2 is not affected. , has a good solvent impurity adsorption effect, through the matching structure design of the positioning fastening bolt 215 and the positioning threaded sleeve 214, combined with the matching structure of the plug-in frame 204 and the activated carbon filter 2, the overall sealing of the activated carbon filter 2 is effectively guaranteed, and it has the use effect of free disassembly and maintenance, enriching the overall functionality of use, through the plug-in structure design of the activated carbon filter plate 210 in the plug-in frame 204, the activated carbon filter 2 can be replaced and maintained regularly according to actual use needs during the normal use of the equipment, and the overall application flexibility has been effectively improved to a great extent, through the setting of the membrane separator 110, the overall filtration strength is greatly improved, through the setting of the backwash pump 405, the microporous filter tank 1 has a backwashing function as a whole, which is conducive to extending the overall service life, and has a very broad application prospect, through the use of the current generating device 602 and the cathode winding 603 are connected in series with each other, it is possible to apply current on the surface of the equipment to form a protective potential, thereby preventing the occurrence of corrosion, effectively improving the anti-corrosion performance of the solvent storage tank 6, and suitable for filtering and storing operations of various solvents.

[0027] Example 3 Reference Figure 1 to Figure 13 , which is the third embodiment of the present invention, and this embodiment is located above the previous embodiment.

[0028] Operation process: Prioritize the completion of the pipe connection operation between the microporous filter tank 1, the activated carbon filter 2, the waste liquid container 3, the water storage container 4 and the solvent storage tank 6, and ensure the electrical connection between the electrical control box 5 and each driving element in the device, so as to facilitate the setting and control of the device through the touch screen 501 and the control button 502; Verify the overall pipeline connectivity of the equipment and the smooth operation of each valve, and ensure that the equipment pipelines are interconnected so that the feed connection between the equipment and the target solvent can be carried out; After the filtration is completed, the equipment needs to be cleaned and maintained regularly to ensure that the overall service life can be extended and the wear and tear on the equipment caused by the work can be reduced.

[0029] Working principle: The target solvent to be filtered is connected to the liquid inlet conduit 203. The target solvent can be connected to the liquid inlet conduit 203 through a pipeline, or the liquid inlet conduit 203 can be directly connected to the target solvent storage container. The liquid inlet pump 201 is started under the setting control of the electrical control box 5, so that the target solvent liquid inlet conduit 203 enters the activated carbon filter 2, and the initial filtering operation is achieved under the adsorption and impurity removal effect of the activated carbon particles in the activated carbon filter plate 210. The target solvent after adsorption and filtration enters the bottom funnel 102 through the liquid delivery conduit 202, and passes through the microporous filter element 105 under the pumping force of the liquid inlet pump 201 to gradually increase the liquid level in the microporous filter tank 1. The target solvent is filtered through the microporous filter element 105, and the target solvent that rises to the position of the head tank cover 101 is the pure filtered solvent. Under the pumping force of the diversion pump 107 after the controlled start, it can pass through the drainage duct 106 and the associated duct 108 under the double-end shunting action of the shunt pipe 109 to the membrane separator 110 at the upper end, and through the separation action of the separation membrane stack 111, further refined filtration is achieved, and finally enters the solvent storage tank 6 through the confluence pipe 113. The solvent storage tank 6 has excellent anti-corrosion performance under the cathode current protection of the current generating device 602 and the cathode winding 603. After all the solvents are filtered, the inside of the microporous filtration tank 1 passes through the microporous filter element 105. The filtered impurity waste liquid passes through the permeation hole 114 and sinks to the bottom of the bottom funnel 102. Under the pumping action of the controlled start of the waste liquid pump 304, the filtered waste liquid inside the bottom funnel 102 flows into the waste liquid container 3 from the waste liquid inlet pipe 303 through the waste liquid diversion pipe 305. The waste liquid can be discharged from the waste liquid outlet 301 to the designated environment for centralized treatment by opening the waste liquid solenoid valve 302. Then, by controlling the start of the backwash pump 405 and opening the control solenoid valve 407, the cleaning water added from the water inlet 401 in the water storage container 4 is pumped to the diversion elbow 104 through the water inlet diversion pipe 406, and a thorough backwash cleaning operation is performed along the filter pipeline of the microporous filter tank 1, which is beneficial to prolonging the overall service life. In addition, the microporous filter element 105 can utilize the assembly structural relationship between itself and the filter element assembly carrier plate 103 to perform regular disassembly, maintenance or replacement operations, which helps to ensure the filtering performance of the equipment, and the plug-in structure between the plug-in frame 204 and the activated carbon filter 2 and the assembled structure of the activated carbon filter plate 210 in the plug-in frame 204 enable the carbon bed of the activated carbon filter 2 to be regularly replaced or maintained according to specific usage requirements, enriching the overall functionality and effectively improving the overall comprehensive practical performance, making the solvent filtration operation of the device in the production process of lyocell fibers more efficient and stable, smooth and environmentally friendly, and has extremely broad application prospects and scope of application.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A lyocell fiber solvent filtering and separation device, comprising a microporous filtering tank (1), an activated carbon filter (2), a waste liquid container (3), a water storage container (4), an electrical control box (5) and a solvent storage tank (6), characterized in that: The upper end of the microporous filter tank (1) is provided with a head cover (101), the bottom of the microporous filter tank (1) is fixedly provided with a bottom cover funnel (102), the lower end of the interior of the microporous filter tank (1) is fixedly provided with a filter element assembly support plate (103), the upper end of the filter element assembly support plate (103) is movably provided with a microporous filter element (105), one side of the activated carbon filter (2) is fixedly provided with a liquid inlet pump (201), and the other side of the activated carbon filter (2) is fixedly provided with a liquid inlet pump (201). A liquid delivery conduit (202) is installed, and the activated carbon filter (2) is connected to the inside of the bottom sealing funnel (102) through the liquid delivery conduit (202). A diversion pump (107) is fixedly installed on the inner side of the upper end of the tank cover (101), and the outside of the diversion pump (107) is fixedly connected to an associated conduit (108), and the bottom of the associated conduit (108) is fixedly connected to a diversion pipe (109), and the bottom of the diversion pipe (109) is fixedly connected to a membrane separator (110).

2. The lyocell fiber solvent filtering and separation device according to claim 1, characterized in that: The outer ring of the filter element assembly support plate (103) is provided with permeation holes (114) symmetrically and annularly at equal intervals, and the inner ring of the filter element assembly support plate (103) is provided with positioning assembly through holes (115) symmetrically and annularly at equal intervals, the inner diameter of the positioning assembly through holes (115) and the outer diameter of the microporous filter element (105) correspond to each other, and the lower end of the outside of the microporous filter element (105) is symmetrically and annularly fixedly installed with a positioning assembly block (118) at equal intervals, and the upper end of the inside of the positioning assembly through hole (115) is provided with positioning grooves (116) symmetrically and annularly at equal intervals, and the opening position of the positioning grooves (116) inside the positioning assembly through holes (115) and the fixed installation position of the positioning assembly block (118) outside the microporous filter element (105) correspond to each other, and the external specifications of the positioning assembly block (118) and the internal specifications of the positioning grooves (116) are mutually adapted.

3. The lyocell fiber solvent filtering and separation device according to claim 2, characterized in that: A rotation clamping groove (117) is preset at the side position of the bottom of the positioning groove (116), and the groove specifications of the rotation clamping groove (117) correspond to the external specifications of the alignment assembly block (118). A drainage conduit (106) is fixedly connected between the diversion pump (107) and the end tank cover (101), and the diversion pump (107) is connected to the inside of the end tank cover (101) through the drainage conduit (106).

4. The lyocell fiber solvent filtering and separation device according to claim 3, characterized in that: A diversion elbow (104) is fixedly connected to the bottom of the bottom-sealed funnel (102); a waste liquid pump (304) is fixedly installed at the end of the diversion elbow (104); a waste liquid diversion pipe (305) is fixedly connected to the side of the waste liquid pump (304); a waste liquid inlet pipe (303) is preset at the side of the lower end of the outside of the waste liquid container (3); the waste liquid diversion pipe (305) is connected to the inside of the waste liquid container (3) through the waste liquid inlet pipe (303); a waste liquid outlet (301) is preset at the side of the lower end of the outside of the waste liquid container (3); and a waste liquid solenoid valve (302) is preset outside the waste liquid outlet (301).

5. The lyocell fiber solvent filtering and separation device according to claim 4, characterized in that: The activated carbon filter (2) is provided with a plug-in plate frame (204) in advance, the external specifications of the plug-in plate frame (204) correspond to the internal specifications of the activated carbon filter (2), a liquid inlet conduit (203) is provided in advance at the side position of the liquid inlet pump (201), the plug-in plate frame (204) is a hollow frame structure as a whole, and the liquid inlet pump (201) and the inside of the activated carbon filter (2) are connected to each other.

6. The lyocell fiber solvent filtering and separation device according to claim 5, characterized in that: The middle positions of the upper and lower ends of the plugboard frame (204) are provided with rotation positioning holes (205); a rotation rod (206) is movably mounted in the middle position inside the plugboard frame (204); positioning rotating parts (207) are fixedly mounted at the upper and lower ends of the rotating rod (206); the external specifications of the positioning rotating parts (207) are mutually compatible with the internal specifications of the rotation positioning holes (205); a rotation handle (208) is fixedly connected to the upper end of the rotating rod (206); a positioning fastening bolt (215) is fixedly mounted at the bottom of the rotating rod (206); a positioning threaded sleeve (214) is preset in the middle position of the bottom of the activated carbon filter (2); the internal thread specifications of the positioning threaded sleeve (214) are mutually compatible with the external thread specifications of the positioning fastening bolt (215).

7. The lyocell fiber solvent filtering and separation device according to claim 6, characterized in that: The plug-in plate frame (204) is provided with plug-in plate grooves (209) symmetrically at upper and lower ends thereof, an activated carbon filter plate (210) is movably mounted inside the plug-in plate frame (204), and alignment plug blocks (211) are symmetrically fixedly mounted at upper and lower ends thereof, and the external specifications of the alignment plug blocks (211) correspond to the internal specifications of the plug-in plate grooves (209) and are matched to each other, assembly plug blocks (212) are symmetrically fixedly mounted at the side positions of both sides of the external side of the plug-in plate frame (204), and limiting slots (213) are symmetrically mounted at the side positions of both sides of the internal side of the activated carbon filter (2), and the internal specifications of the limiting slots (213) correspond to the external specifications of the assembly plug blocks (212) and are matched to each other.

8. The lyocell fiber solvent filtering and separation device according to claim 7, characterized in that: The membrane separator (110) is preset with a separation membrane stack (111) inside, the membrane separator (110) is preset with a sealed inspection cover (112) outside, the bottom of the membrane separator (110) is fixedly connected with a confluence pipe (113), and a solvent inlet (601) is preset at the middle position of the upper end of the solvent storage tank (6). The membrane separator (110) is connected to the solvent inlet (601) through the confluence pipe (113) and is connected to the inside of the solvent storage tank (6).

9. The lyocell fiber solvent filtering and separation device according to claim 8, characterized in that: A water inlet (401) is preset at the middle position of the upper end of the water storage container (4), a water outlet (402) with a valve is preset at the side position of the lower end of the outer side of the water storage container (4), a water inlet associated port (403) is preset at the lower end position of the inner side of the water storage container (4), a water inlet guide pipe (404) is fixedly connected to the outside of the water inlet associated port (403), a backwash pump (405) is fixedly connected to the end of the water inlet guide pipe (404), a water inlet drainage pipe (406) is fixedly connected to the other side of the backwash pump (405), the water inlet drainage pipe (406) and the inside of the drainage elbow (104) are interconnected and communicated with each other, and a control solenoid valve (407) is preset to the outside of the water inlet drainage pipe (406).

10. The lyocell fiber solvent filtering and separation device according to claim 9, characterized in that: A touch screen (501) is preset at the upper end of the outer side of the electrical control box (5), a control button (502) is preset at the lower end of the touch screen (501), a current generating device (602) is fixedly installed at the upper end of the inner side of the outer side of the solvent storage tank (6), a cathode winding (603) is preset at the lower end of the outer side of the solvent storage tank (6), the current generating device (602) and the cathode winding (603) are connected in series with each other, a solvent outlet (604) is preset at the side of the lower end of the outer side of the solvent storage tank (6), and the electrical control box (5) is electrically connected to the diversion pump (107), the liquid inlet pump (201), the waste liquid solenoid valve (302), the waste liquid pump (304), the backwash pump (405), the control solenoid valve (407) and the current generating device (602).

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