Energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production

Abstract

The invention provides an energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production, and relates to the technical field of filters. During further cleaning, a scraper is controlled to be in contact with the microfiltration membrane through extension of an electric cylinder, then rotation of the scraper is achieved through rotation of a servo motor, further cleaning is achieved, when the electric cylinder extends, the position of a spray head can be switched, and at the moment, the cleaning effect is further improved; and when the servo motor rotates to realize liquid spraying cleaning and scraping, vibration of the micro-filtration membrane can be realized through cooperation of a spring rod and a groove, so that the cleaning effect is further improved, the structural property is strong, and the problems that impurities are easy to remain on the micro-filtration membrane after filtering for a period of time, the filtering effect of the micro-filtration membrane is influenced, the micro-filtration membrane needs to be cleaned, and the working efficiency is high are solved. In the cleaning process, although liquid flushing and scraping cleaning can be achieved at present, the problem that the filtering efficiency is reduced due to the fact that a scraping part of the lifting space is prone to blocking a filtering structure when the lifting space is used exists structurally.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and in particular to an energy-saving, self-cleaning microfiltration membrane filter for chlor-alkali production. Background Technology

[0002] The chlor-alkali industry refers to the industrial production of sodium hydroxide, chlorine, and hydrogen by electrolyzing saturated sodium chloride solution, and the use of these as raw materials to produce a series of chemical products. In the chlor-alkali manufacturing industry, filtration is required through filters. After a period of filtration, impurities tend to remain on the microfiltration membrane, which can affect the filtration efficiency. Therefore, cleaning is necessary. Although liquid rinsing and scraping cleaning are currently possible, there is still room for improvement in the structure. During use, the scraped parts can easily obstruct the filter structure, reducing filtration efficiency.

[0003] To address the aforementioned technical problems, this invention provides an energy-saving, self-cleaning microfiltration membrane filter for chlor-alkali production. This filter addresses the issue that impurities tend to remain on the microfiltration membrane after a period of filtration, affecting its filtration efficiency. Therefore, cleaning is necessary. While liquid rinsing and scraping cleaning are currently feasible, there is still room for improvement in the design. During use, the scraped portion can easily obstruct the filter structure, reducing filtration efficiency. Summary of the Invention

[0004] In view of this, the present invention provides an energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production, which has a cleaning part and a driving part. Through the arrangement of the cleaning part and the driving part, it can realize liquid spraying cleaning and scraping cleaning. During normal use, the scraping structure does not contact the microfiltration membrane, ensuring the normal filtration of the microfiltration membrane. In the initial cleaning, water is sprayed through the nozzle for cleaning. In the further cleaning, the extension of the electric cylinder controls the scraper to contact the microfiltration membrane. Then, the rotation of the servo motor realizes the rotation of the scraper to achieve further cleaning. When the electric cylinder extends, the nozzle position can be switched, which further improves the cleaning effect. Moreover, when the servo motor rotates to realize liquid spraying cleaning and scraping, the vibration of the microfiltration membrane can be realized through the cooperation of the spring rod and the groove, which further improves the cleaning effect and has a strong structure.

[0005] The purpose and efficacy of this invention's energy-saving, self-cleaning microfiltration membrane filter for chlor-alkali production are achieved through the following specific technical means:

[0006] This invention provides an energy-saving, self-cleaning microfiltration membrane filter for chlor-alkali production, specifically comprising: a filter cartridge;

[0007] The filter cartridge has a base at the bottom, and an auxiliary groove for collecting residue is provided on the base. The auxiliary groove is an inverted conical groove structure. During use, the auxiliary groove can prevent residue from falling onto the top surface of the base. If residue falls onto the top surface of the base, removing the base at this time will easily cause the residue to fall onto the ground, increasing the difficulty of subsequent maintenance. The filter cartridge is equipped with a filter part.

[0008] Furthermore, the filtration section consists of a mounting base, a base body, and a microfiltration membrane. The mounting base is welded to the inner wall of the filter cylinder and has an annular structure. A base body is fixed on the mounting base, and a microfiltration membrane is installed on the outer wall of the base body. The base body has an inverted frustum-shaped structure and liquid inlet holes are arranged in an annular array on the base body.

[0009] Furthermore, the filter cartridge is equipped with an inlet pipe and an outlet pipe. The inlet pipe is located below the mounting base and the base body, and the outlet pipe is located above the mounting base and the base body. During filtration, the liquid to be filtered enters the filter cartridge through the inlet pipe, then passes through the microfiltration membrane and the base body, and then enters the position above the mounting base, and is finally discharged through the outlet pipe.

[0010] During use, because the base is an inverted frustum-shaped structure, it is easy for residues to fall off when cleaning the microfiltration membrane and the base, reducing the difficulty of cleaning.

[0011] Furthermore, a cleaning component is installed on the base;

[0012] The cleaning section consists of a cylindrical tube, a retaining ring, a nozzle, a welding seat, a mounting arm, a scraper, a groove, a spring rod, a liquid supply tube, and a force plate. The cylindrical tube is slidably connected to the base and passes through the base. A retaining ring is welded onto the cylindrical tube. The retaining ring has a ring structure, and the bottom end face of the retaining ring contacts the bottom end face of the inner wall of the base.

[0013] Furthermore, the cylindrical tube is provided with nozzles in a ring array, and the nozzles are located inside the base body;

[0014] A liquid supply pipe is connected to one end of the cylindrical tube, and the liquid supply pipe is connected to the liquid supply pump. When liquid spraying is required, the liquid supply pump can be started. When the liquid supply pump is started, the liquid enters the interior of the cylindrical tube and is then sprayed out through the nozzle. The liquid sprayed out of the nozzle comes into contact with the base and the microfiltration membrane to achieve cleaning from the inside out. At this time, the adhering substances on the outside of the microfiltration membrane can be cleaned.

[0015] Furthermore, the cylindrical tube is welded with a welding seat, which is a ring structure. Two mounting arms are symmetrically welded on the welding seat, and each mounting arm is equipped with a scraper. The two scrapers are in an inverted figure-eight shape, and the two scrapers together form the cleaning structure of the microfiltration membrane.

[0016] Furthermore, when the cylindrical tube moves upward by 1 cm, the scraper comes into contact with the microfiltration membrane, and at this time the nozzle moves upward by 1 cm;

[0017] A load-bearing plate is welded onto the cylindrical tube; the load-bearing plate is a circular plate structure.

[0018] Furthermore, a fixing part is installed on the base;

[0019] The fixed part consists of a connecting rod, a fixed seat, an auxiliary seat, a fixing bolt, and an adjustment groove. There are two connecting rods, both of which are cylindrical rod-shaped structures. The lower end of each connecting rod is welded to the fixed seat.

[0020] The drive unit is mounted on the cylindrical tube;

[0021] The drive unit consists of a first gear, a servo motor, a second gear, and an electric cylinder. A first gear is welded onto a cylindrical tube, the servo motor is fixed on a fixed base, and a second gear is mounted on the rotating shaft of the servo motor. The second gear meshes with the first gear.

[0022] Furthermore, an electric cylinder is installed on the fixed base, and the top surface of the electric cylinder is fixed to the force plate. When the electric cylinder extends to its maximum length, the scraper contacts the microfiltration membrane. When it is necessary to scrape off the residue on the microfiltration membrane, the electric cylinder is first controlled to extend. When the electric cylinder extends to its maximum length, the scraper contacts the microfiltration membrane. At this time, the servo motor is controlled to rotate. When the servo motor rotates, it is driven by the meshing of the second gear and the first gear. At this time, the cylindrical tube, the nozzle, and the scraper are all rotating. This completes the dual cleaning of the microfiltration membrane. The dual cleaning here is the liquid spraying cleaning of the nozzle and the scraping cleaning of the scraper.

[0023] During the cleaning process, the electric cylinder is controlled to retract to its initial position. At this point, the cylindrical tube resets, the scraper detaches from the microfiltration membrane, and the nozzle returns to its original position. The nozzle is then controlled to continue spraying liquid for cleaning. Therefore, changing the nozzle's position can improve the cleaning effect. (Combined with...) Figure 7 As can be seen, there is a gap between the upper and lower nozzles. The upper and lower movement of the nozzles is achieved by extending the electric cylinder. This eliminates the spray dead angle at the nozzle gap and improves the spraying effect.

[0024] Furthermore, the bottom end face of the base is provided with grooves in a ring array, and the grooves are semi-cylindrical groove structures;

[0025] A spring rod is welded to the top surface of the welding seat. The upper end of the spring rod is ground to form an arc shape. The upper end of the spring rod is elastically engaged with the groove. When the cylindrical tube rotates, the welding seat and the spring rod rotate. During use, when performing rotary spray cleaning or rotary scraping, the spring rod rotates with the welding seat. At this time, the continuous elastic engagement between the spring rod and the groove enables continuous vibration of the seat, which shakes off the residue and improves the cleaning effect.

[0026] Furthermore, an auxiliary seat is welded onto the fixed base, and the auxiliary seat has a ring structure;

[0027] The mounting base is fixed to the equipment by four fixing bolts. The upper end of each of the four fixing bolts is engaged with the auxiliary base, and the middle part of the fixing bolts is exposed.

[0028] Each fixing bolt has an adjustment groove, which is a hexagonal groove structure. The adjustment groove is an auxiliary adjustment structure for the fixing bolt. When it is necessary to disassemble the fixing bolt, if the fixing bolt is stripped and cannot be disassembled, it can be cut off from the exposed part in the middle of the fixing bolt without damaging the fixing seat.

[0029] If the adjusting part of the fixing bolt is bumped and cannot be engaged with the wrench, an Allen wrench can be inserted into the adjusting groove for adjustment.

[0030] Beneficial effects

[0031] This application does not require chemical cleaning methods during the cleaning process. Instead, it cleans the microfiltration membrane through the impact of rinsing and scraping, resulting in good environmental performance and no pollution.

[0032] The system is equipped with a cleaning section and a drive section. Firstly, when liquid spraying is required, the liquid supply pump is activated. When the pump starts, liquid enters the cylindrical tube and is then sprayed out through the nozzle. The sprayed liquid contacts the base and the microfiltration membrane, achieving cleaning from the inside out, thus removing deposits from the outer surface of the microfiltration membrane. Secondly, when it is necessary to scrape off residue from the microfiltration membrane, the electric cylinder is extended. When the cylinder extends to its maximum length, the scraper contacts the microfiltration membrane. At this point, the servo motor is controlled to rotate. When the servo motor rotates, it transmits power through the meshing of the second gear and the first gear. The cylindrical tube, nozzle, and scraper all rotate, completing the dual cleaning of the microfiltration membrane. This dual cleaning consists of liquid spraying from the nozzle and scraping by the scraper. Third, during the cleaning process, the electric cylinder is controlled to retract to its initial position. At this point, the cylindrical tube resets, the scraper disengages from the microfiltration membrane, and the nozzle returns to its original position. The nozzle then continues to spray liquid for cleaning. Therefore, changing the nozzle position can improve the cleaning effect. (Combined with...) Figure 7 As can be seen, there is a gap between the upper and lower nozzles. The extension of the electric cylinder enables the nozzles to move up and down, eliminating spray dead zones at the nozzle gaps and improving the spraying effect. Fourth, during rotary spray cleaning and rotary scraping, the spring rod rotates with the welded seat. The continuous elastic engagement between the spring rod and the groove enables continuous vibration of the seat, shaking off residue and improving the cleaning effect. In summary, it can achieve both spray cleaning and scraping cleaning. During normal use, the scraping structure does not contact the microfiltration membrane, ensuring normal filtration. Initial cleaning is performed by spraying water from the nozzles. During further cleaning, the extension of the electric cylinder controls the scraper to contact the microfiltration membrane, and then the rotation of the servo motor enables the scraper to rotate for further cleaning. The extension of the electric cylinder allows the nozzle position to be switched, further improving the cleaning effect. Furthermore, during the servo motor's rotation for spray cleaning and scraping, the spring rod and groove work together to vibrate the microfiltration membrane, further improving the cleaning effect. The structure is robust.

[0033] The device features a fixing section. This section serves two purposes: firstly, if the fixing bolt is stripped and cannot be removed, it can be cut off from the exposed portion in the middle without damaging the mounting base; secondly, if the adjusting part of the fixing bolt is damaged and cannot be engaged with a wrench, an Allen wrench can be inserted into the adjusting slot for adjustment. This allows for emergency adjustments after bolt damage, and facilitates cutting off stripped bolts without damaging other parts, making it highly practical.

[0034] The system is equipped with a filtration section. Because the base is an inverted frustum-shaped structure, it facilitates the removal of residues during the cleaning of the microfiltration membrane and the base, reducing the difficulty of cleaning. Through structural improvements to the base, the cleaning efficiency has been increased and the cleaning difficulty has been reduced. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0036] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0037] In the attached diagram:

[0038] Figure 1 This is a schematic diagram of the main structure of the energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production according to the present invention.

[0039] Figure 2 This is an axial view structural schematic diagram of the energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production according to the present invention.

[0040] Figure 3 This is a partial cross-sectional axial view of the energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production according to the present invention.

[0041] Figure 4 This is the present invention. Figure 3 A schematic diagram of the main structure.

[0042] Figure 5 This is the present invention. Figure 4 A schematic diagram of the axial view structure after further cross-section.

[0043] Figure 6 This is the present invention. Figure 5 A schematic diagram of the main structure.

[0044] Figure 7 This is the present invention. Figure 6 A magnified structural diagram at point A.

[0045] Figure 8 This is an axial view structural diagram of the filtration and cleaning parts of the present invention.

[0046] Figure 9 This is the present invention. Figure 8 A schematic diagram of the rotated axial view structure.

[0047] Figure 10 This is the present invention. Figure 9 A magnified structural diagram at point B.

[0048] List of reference numerals

[0049] 1. Filter cartridge; 101. Base; 102. Auxiliary tank; 103. Liquid inlet pipe; 104. Liquid outlet pipe; 2. Filtration section; 201. Mounting seat; 202. Seat body; 203. Microfiltration membrane; 3. Cleaning section; 301. Columnar tube; 302. Retaining ring; 303. Nozzle; 304. Welding seat; 305. Mounting arm; 306. Scraper; 307. Groove; 308. Spring rod; 309. Liquid supply pipe; 310. Force plate; 4. Drive section; 401. First gear; 402. Servo motor; 403. Second gear; 404. Electric cylinder; 5. Fixing section; 501. Connecting rod; 502. Fixing seat; 503. Auxiliary seat; 504. Fixing bolt; 505. Adjustment groove. Detailed Implementation

[0050] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0051] Example 1:

[0052] Please refer to Figures 1 to 10 :

[0053] This invention proposes an energy-saving, self-cleaning microfiltration membrane filter for chlor-alkali production, comprising: a filter cartridge 1;

[0054] A base 101 is installed at the bottom of the filter cartridge 1. An auxiliary groove 102 is provided on the base 101 to facilitate the collection of residue. The auxiliary groove 102 is an inverted conical groove structure. During use, the auxiliary groove 102 can prevent residue from falling onto the top surface of the base 101. When residue falls onto the top surface of the base 101, removing the base 101 at this time will easily cause the residue to fall onto the ground, increasing the difficulty of subsequent maintenance. A filter part 2 is installed inside the filter cartridge 1.

[0055] The filtration section 2 consists of a mounting base 201, a base body 202, and a microfiltration membrane 203. The mounting base 201 is welded to the inner wall of the filter cylinder 1. The mounting base 201 has an annular structure. A base body 202 is fixed on the mounting base 201. The microfiltration membrane 203 is installed on the outer wall of the base body 202. The base body 202 has an inverted frustum-shaped structure. Liquid inlet holes are arranged in an annular array on the base body 202.

[0056] The filter cartridge 1 is equipped with an inlet pipe 103 and a drain pipe 104. The inlet pipe 103 is located below the mounting base 201 and the base 202, and the drain pipe 104 is located above the mounting base 201 and the base 202. During filtration, the liquid to be filtered enters the filter cartridge 1 through the inlet pipe 103, then passes through the microfiltration membrane 203 and the base 202, and then enters the position above the mounting base 201, and is finally discharged through the drain pipe 104.

[0057] During use, because the base 202 is an inverted frustum-shaped structure, it is easy for residues to fall off when cleaning the microfiltration membrane 203 and the base 202, thus reducing the difficulty of cleaning.

[0058] The cleaning part 3 is installed on the base 101;

[0059] The cleaning section 3 consists of a cylindrical tube 301, a retaining ring 302, a nozzle 303, a welding seat 304, a mounting arm 305, a scraper 306, a groove 307, a spring rod 308, a liquid supply pipe 309, and a force plate 310. The cylindrical tube 301 is slidably connected to the base 101 and passes through the seat body 202. A retaining ring 302 is welded on the cylindrical tube 301. The retaining ring 302 has a ring structure, and the bottom end face of the retaining ring 302 contacts the bottom end face of the inner wall of the seat body 202.

[0060] Among them, nozzles 303 are arranged in a ring array on the cylindrical tube 301, and the nozzles 303 are located inside the base 202;

[0061] A liquid supply pipe 309 is connected to one end of the cylindrical tube 301. The liquid supply pipe 309 is connected to a liquid supply pump. When liquid spraying is required, the liquid supply pump can be started. When the liquid supply pump is started, the liquid enters the interior of the cylindrical tube 301 and is then sprayed out through the nozzle 303. The liquid sprayed out by the nozzle 303 comes into contact with the seat 202 and the microfiltration membrane 203 to achieve cleaning from the inside out. At this time, the adhering substances on the outside of the microfiltration membrane 203 can be cleaned.

[0062] Example 2:

[0063] Based on Example 1, such as Figure 5 As shown, it also includes: a fixed part 5, a welding seat 304 welded to the cylindrical tube 301, the welding seat 304 is a ring structure, and two mounting arms 305 are symmetrically welded on the welding seat 304. Each mounting arm 305 is equipped with a scraper 306. The two scrapers 306 are in an inverted figure-eight structure. The two scrapers 306 together form the cleaning structure of the microfiltration membrane 203.

[0064] When the cylindrical tube 301 moves upward by 1 cm, the scraper 306 comes into contact with the microfiltration membrane 203, and at this time the nozzle 303 moves upward by 1 cm.

[0065] A stress-bearing plate 310 is welded onto the cylindrical tube 301. The stress-bearing plate 310 is a circular plate structure.

[0066] Among them, a fixing part 5 is installed on the base 101;

[0067] The fixed part 5 consists of a connecting rod 501, a fixed seat 502, an auxiliary seat 503, a fixing bolt 504, and an adjustment groove 505. There are two connecting rods 501. Both connecting rods 501 are cylindrical rod-shaped structures. The lower end of both connecting rods 501 is welded to the fixed seat 502.

[0068] The drive unit 4 is mounted on the cylindrical tube 301;

[0069] The drive unit 4 consists of a first gear 401, a servo motor 402, a second gear 403, and an electric cylinder 404. A first gear 401 is welded onto the cylindrical tube 301. The servo motor 402 is fixed on the fixed base 502. The second gear 403 is mounted on the rotating shaft of the servo motor 402. The second gear 403 meshes with the first gear 401.

[0070] An electric cylinder 404 is installed on the fixed base 502. The top surface of the electric cylinder 404 is fixed on the force plate 310. When the electric cylinder 404 extends to its maximum length, the scraper 306 contacts the microfiltration membrane 203. When it is necessary to scrape off the residue on the microfiltration membrane 203, the electric cylinder 404 is first controlled to extend. When the electric cylinder 404 extends to its maximum length, the scraper 306 contacts the microfiltration membrane 203. At this time, the servo motor 402 is controlled to rotate. When the servo motor 402 rotates, it is driven by the meshing of the second gear 403 and the first gear 401. At this time, the cylindrical tube 301, the nozzle 303 and the scraper 306 are all rotating. At this time, the dual cleaning of the microfiltration membrane 203 is completed. The dual cleaning here is the liquid spraying cleaning of the nozzle 303 and the scraping cleaning of the scraper 306.

[0071] During the cleaning process, the electric cylinder 404 is retracted to its initial position, at which point the cylindrical tube 301 resets, the scraper 306 detaches from the microfiltration membrane 203, and the nozzle 303 returns to its original position. The nozzle 303 is then controlled to continue spraying liquid for cleaning. Therefore, the cleaning effect can be improved by changing the position of the nozzle 303. (This is in conjunction with...) Figure 7 As can be seen, there is a gap between the top and bottom of the nozzle 303. The nozzle 303 moves up and down by extending the electric cylinder 404. This eliminates the spray dead angle at the gap of the nozzle 303 and improves the spraying effect.

[0072] Example 3:

[0073] Based on Example 2, such as Figure 5As shown, it also includes: groove 307, spring rod 308, auxiliary seat 503 and fixing bolt 504. The bottom end surface of the seat 202 is provided with groove 307 in a ring array. The groove 307 is a semi-cylindrical groove structure.

[0074] A spring rod 308 is welded to the top surface of the welding seat 304. The upper end of the spring rod 308 is ground, and after grinding, the upper end of the spring rod 308 has an arc-shaped structure. The upper end of the spring rod 308 is elastically engaged with the groove 307. When the cylindrical tube 301 rotates, the welding seat 304 and the spring rod 308 are in a rotating state. During use, when performing rotary spray cleaning and rotary scraping cleaning, the spring rod 308 follows the rotation of the welding seat 304. At this time, the continuous elastic engagement between the spring rod 308 and the groove 307 can realize the continuous vibration of the seat 202, which shakes off the residue and improves the cleaning effect.

[0075] An auxiliary seat 503 is welded onto the fixed seat 502. The auxiliary seat 503 has a ring structure.

[0076] The fixed base 502 is fixed to the equipment by four fixing bolts 504. The upper end of each of the four fixing bolts 504 is engaged with the auxiliary base 503. At this time, the middle part of the fixing bolts 504 is exposed.

[0077] Each fixing bolt 504 has an adjustment groove 505. The adjustment groove 505 is a hexagonal groove structure. The adjustment groove 505 is an auxiliary adjustment structure for the fixing bolt 504. When it is necessary to disassemble the fixing bolt 504, if the fixing bolt 504 is stripped and cannot be disassembled, it can be cut off from the exposed part in the middle of the fixing bolt 504. The fixing seat 502 will not be damaged when cutting off.

[0078] If the adjusting part of the fixing bolt 504 is bumped and cannot be engaged with the wrench, an Allen wrench can be inserted into the adjusting slot 505 for adjustment.

[0079] The specific usage and function of this embodiment are as follows:

[0080] During filtration, the liquid to be filtered enters the filter cartridge 1 through the inlet pipe 103, then passes through the microfiltration membrane 203 and the seat 202, and then enters the position above the mounting base 201, and is finally discharged through the drain pipe 104.

[0081] During use, because the base 202 is an inverted frustum-shaped structure, it is easy for residues to fall off when cleaning the microfiltration membrane 203 and the base 202, thus reducing the difficulty of cleaning.

[0082] When liquid spraying is required, the liquid supply pump can be started. When the liquid supply pump is started, the liquid enters the cylindrical tube 301 and is then sprayed out through the nozzle 303. The liquid sprayed out of the nozzle 303 comes into contact with the seat 202 and the microfiltration membrane 203 to achieve cleaning from the inside out. At this time, the adhering substances on the outside of the microfiltration membrane 203 can be cleaned.

[0083] When it is necessary to scrape off the residue on the microfiltration membrane 203, firstly, control the electric cylinder 404 to extend. When the electric cylinder 404 extends to its maximum length, the scraper 306 contacts the microfiltration membrane 203. At this time, control the servo motor 402 to rotate. When the servo motor 402 rotates, it is driven by the meshing of the second gear 403 and the first gear 401. At this time, the cylindrical tube 301, the nozzle 303, and the scraper 306 are all rotating. This completes the dual cleaning of the microfiltration membrane 203. The dual cleaning here is the liquid spraying cleaning of the nozzle 303 and the scraping cleaning of the scraper 306.

[0084] During the cleaning process, the electric cylinder 404 is retracted to its initial position, at which point the cylindrical tube 301 resets, the scraper 306 detaches from the microfiltration membrane 203, and the nozzle 303 returns to its original position. The nozzle 303 is then controlled to continue spraying liquid for cleaning. Therefore, the cleaning effect can be improved by changing the position of the nozzle 303. (This is in conjunction with...) Figure 7 As can be seen, there is a gap between the top and bottom of the nozzle 303. The up and down movement of the nozzle 303 is achieved by extending the electric cylinder 404. This eliminates the spray dead angle at the gap of the nozzle 303 and improves the spraying effect.

[0085] During use, when performing rotary spray cleaning and rotary scraping cleaning, the spring rod 308 rotates with the welding seat 304. At this time, the continuous elastic engagement between the spring rod 308 and the groove 307 can realize the continuous vibration of the seat 202, thereby shaking off the residue and improving the cleaning effect.

[0086] When it is necessary to disassemble the fixing bolt 504, if the fixing bolt 504 is stripped and cannot be disassembled, it can be cut off from the exposed part in the middle of the fixing bolt 504. The fixing seat 502 will not be damaged when cutting off.

[0087] If the adjusting part of the fixing bolt 504 is bumped and cannot be engaged with the wrench, an Allen wrench can be inserted into the adjusting slot 505 for adjustment.

Claims

1. A chlor-alkali production energy saving self-cleaning microfiltration membrane filter, characterized by, include: A filter cylinder (1) is provided with a base (101) at the bottom of the filter cylinder (1). An auxiliary groove (102) for easy collection of residue is provided on the base (101). The auxiliary groove (102) is an inverted conical groove structure. A filter part (2) is installed inside the filter cylinder (1). The filter part (2) consists of a mounting base (201), a seat body (202), and a microfiltration membrane (203). The mounting base (201) is welded to the inner wall of the filter cylinder (1). The mounting base (201) is an annular structure. A seat body (202) is fixed on the mounting base (201). A microfiltration membrane (203) is installed on the outer wall of the seat body (202). The seat body (202) is an inverted frustum-shaped structure. Liquid inlet holes are provided in an annular array on the seat body (202).

2. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 1, characterized in that: The filter cartridge (1) is provided with an inlet pipe (103) and an outlet pipe (104). The inlet pipe (103) is located below the mounting base (201) and the seat (202), and the outlet pipe (104) is located above the mounting base (201) and the seat (202).

3. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 1, characterized in that: A cleaning component (3) is installed on the base (101); The cleaning part (3) consists of a cylindrical tube (301), a retaining ring (302), a nozzle (303), a welding seat (304), a mounting arm (305), a scraper (306), a groove (307), a spring rod (308), a liquid supply pipe (309), and a force plate (310). The cylindrical tube (301) is slidably connected to the base (101). The cylindrical tube (301) passes through the seat body (202). A retaining ring (302) is welded on the cylindrical tube (301). The retaining ring (302) has a ring structure. The bottom end face of the retaining ring (302) contacts the bottom end face of the inner wall of the seat body (202).

4. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 3, characterized in that: The cylindrical tube (301) is provided with nozzles (303) arranged in a ring array, and the nozzles (303) are located inside the base (202); A liquid supply pipe (309) is connected to one end of the cylindrical tube (301), and the liquid supply pipe (309) is connected to the liquid supply pump.

5. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 4, characterized in that: The cylindrical tube (301) is welded with a welding seat (304), which is a ring structure. Two mounting arms (305) are symmetrically welded on the welding seat (304). Each mounting arm (305) is equipped with a scraper (306). The two scrapers (306) are in an inverted figure-eight structure. The two scrapers (306) together form the cleaning structure of the microfiltration membrane (203).

6. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 5, characterized in that: When the cylindrical tube (301) moves upward by 1 cm, the scraper (306) comes into contact with the microfiltration membrane (203), and at this time the nozzle (303) moves upward by 1 cm; A stress plate (310) is welded onto the cylindrical tube (301), and the stress plate (310) is a circular plate structure.

7. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 1, characterized in that: A fixing part (5) is installed on the base (101); The fixed part (5) consists of a connecting rod (501), a fixed seat (502), an auxiliary seat (503), a fixing bolt (504), and an adjustment groove (505). There are two connecting rods (501). Both connecting rods (501) are cylindrical rod structures. The lower end of both connecting rods (501) is welded to the fixed seat (502). A drive unit (4) is mounted on the cylindrical tube (301); The drive unit (4) consists of a first gear (401), a servo motor (402), a second gear (403), and an electric cylinder (404). A first gear (401) is welded onto a cylindrical tube (301). The servo motor (402) is fixed on a fixed base (502). A second gear (403) is mounted on the rotating shaft of the servo motor (402). The second gear (403) meshes with the first gear (401).

8. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 7, characterized in that: An electric cylinder (404) is installed on the fixed base (502). The top surface of the electric cylinder (404) is fixed on the force plate (310). When the electric cylinder (404) extends to its maximum length, the scraper (306) contacts the microfiltration membrane (203).

9. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 1, characterized in that: The bottom surface of the base (202) is provided with grooves (307) in an annular array, and the grooves (307) are semi-cylindrical groove structures; A spring rod (308) is welded to the top surface of the welding seat (304). The upper end of the spring rod (308) is ground and has an arc-shaped structure. The upper end of the spring rod (308) is elastically engaged with the groove (307). When the cylindrical tube (301) rotates, the welding seat (304) and the spring rod (308) are in a rotating state.

10. The energy-saving self-cleaning microfiltration membrane filter for chlor-alkali production as described in claim 7, characterized in that: An auxiliary seat (503) is welded onto the fixed seat (502), and the auxiliary seat (503) has a ring structure; The mounting base (502) is fixed to the equipment by four fixing bolts (504). The upper end of each of the four fixing bolts (504) is engaged with the auxiliary base (503). At this time, the middle part of the fixing bolts (504) is exposed. Each fixing bolt (504) has an adjustment groove (505). The adjustment groove (505) is a hexagonal groove structure and serves as an auxiliary adjustment structure for the fixing bolt (504).

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