Circulating water filtering device for sodium aluminate solution vapor condensation

Abstract

The utility model relates to circulating water filtration technical field, the utility model provides a kind of circulating water filtration device for sodium aluminate solution steam condensation, including filter box, filter box includes box and lid, lid is installed on the box by bolt, the lateral wall of box is connected with water inlet pipe, still include softening tank, sealing groove, filter cartridge, support disc, cleaning mechanism and softening mechanism, the bottom lateral wall of filter box is fixedly arranged with softening tank, the lateral wall of softening tank is connected with water outlet pipe, sealing groove is set on the inner bottom wall of box, filter cartridge is provided in the box, the bottom end of filter cartridge is inserted into sealing groove and with the groove bottom of sealing groove abuts, the top end of filter cartridge is fixedly arranged with support disc, cleaning mechanism is set in the box, for cleaning filter cartridge, by above technical scheme, for solving the technical problem that impurity in the prior art circulating water and calcium, magnesium ion easily block pipeline and affect the production efficiency of sodium aluminate solution.

Description

Technical Field

[0001] This utility model relates to the field of circulating water filtration technology, specifically to a circulating water filtration device for condensing sodium aluminate solution vapor. Background Technology

[0002] In the production and treatment of sodium aluminate solution, the steam condensation system is a crucial link in ensuring production continuity and energy efficiency. The circulating water, as the cooling medium for steam condensation, directly affects the condensation effect, equipment lifespan, and system operational stability.

[0003] In the sodium aluminate solution production environment, the circulating water is prone to deterioration in quality due to the following reasons during long-term circulation: On the one hand, when the circulating water comes into contact with the external environment, it will mix with solid particles such as dust and silt from the air. At the same time, the inner walls of the system pipes and equipment may produce rust, flaking metal fragments and other impurities due to corrosion and aging. On the other hand, in the process environment involved in the production of sodium aluminate solution, a small amount of sodium aluminate solution droplets, aluminum ions and other process-related substances may enter the circulating water system with steam or air, resulting in the circulating water containing not only inorganic impurities, but also some soluble salts or colloidal substances.

[0004] When these impurities enter the steam condensation equipment (such as condensers and heat exchangers) with the circulating water, they will deposit on the inner wall of the equipment to form scale, which will significantly reduce heat transfer efficiency, increase steam consumption and energy waste. At the same time, solid particles will aggravate the wear and corrosion of equipment pipelines, shorten the service life of the equipment, and may even cause the circulating water flow to decrease due to pipeline blockage, affecting the normal operation of the condensation system, thereby interfering with the production effect of sodium aluminate solution, increasing maintenance costs and downtime risks. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a circulating water filtration device for steam condensation of sodium aluminate solution, which solves the technical problem in the prior art that impurities in the circulating water and calcium and magnesium ions easily clog the pipes, thus affecting the production efficiency of sodium aluminate solution.

[0006] According to one aspect, at least one embodiment of the present invention provides a circulating water filtration device for condensing sodium aluminate solution vapor, comprising a filter box, the filter box including a box body and a box cover, the box cover being bolted to the box body, an inlet pipe being connected to the side wall of the box body, and further including a softening box, a sealing groove, a filter cylinder, a support plate, a cleaning mechanism, and a softening mechanism. The softening box is fixedly disposed on the bottom side wall of the filter box, and an outlet pipe is connected to the side wall of the softening box. The sealing groove is formed on the inner bottom wall of the box body, the filter cylinder is disposed inside the box body, the bottom end of the filter cylinder extending into the sealing groove and abutting against the bottom of the sealing groove, the support plate being fixedly disposed on the top end of the filter cylinder, the cleaning mechanism being disposed inside the box body for cleaning the filter cylinder, and the softening mechanism being disposed inside the softening box for softening the circulating water.

[0007] Preferably, the cleaning mechanism includes a cleaning block, a guide column, a first rotating mechanism, and a lifting mechanism. The cleaning block is disposed inside the housing on one side of the filter cartridge. The sidewall of the cleaning block is evenly distributed with cleaning bristles, which contact the sidewall of the filter cartridge. The guide column is fixedly disposed on the bottom sidewall of the housing, and the top end of the guide column contacts the housing cover. The guide column passes through the cleaning block and is slidably connected to the cleaning block. The first rotating mechanism is disposed between the housing cover and the support plate, and is used to drive the support plate to rotate. The lifting mechanism is disposed between the housing cover and the cleaning block, and is used to drive the cleaning block to reciprocate on the guide column. In addition, a discharge port is provided on the sidewall of the filter housing, and a discharge control valve is built into the discharge port.

[0008] Furthermore, the first rotating mechanism includes a driving groove, a limiting groove, a limiting block, and a driving mechanism. The driving groove is formed on the bottom side wall of the box cover. A driving disk is rotatably disposed in the bottom of the driving groove. The limiting groove is formed on the bottom side wall of the driving disk. The limiting block is fixedly disposed on the top side wall of the supporting disk. The limiting block extends into the limiting groove and abuts against the bottom of the limiting groove. The shape of the limiting block is adapted to the limiting groove. The driving mechanism is disposed on the box cover and is used to control the rotation of the driving disk.

[0009] Furthermore, the drive mechanism includes a first housing and a first motor. The first housing is fixedly disposed on the top side wall of the box cover, and the first motor is mounted on the top side wall of the first housing. A drive rod is fixedly disposed between the output end of the first motor and the drive disc.

[0010] Furthermore, the lifting mechanism includes a support plate, a support block, and a reciprocating movement mechanism. The support plate is slidably disposed within the first housing. The support block is fixedly disposed on the bottom sidewall of the support plate. The bottom sidewall of the support block penetrates the inner bottom wall of the first housing and the box cover and is fixedly connected to the cleaning block. The reciprocating movement mechanism is disposed within the first housing and is used to drive the support plate to reciprocate within the first housing.

[0011] Based on the above scheme, the reciprocating movement mechanism includes a support spring, a cam, and a second rotation mechanism. The support spring is fixedly disposed between the inner bottom wall of the first housing and the support plate. The cam is rotatably disposed within the first housing, and the side wall of the cam contacts the side wall of the support plate. The second rotation mechanism is disposed within the first housing and is used to drive the cam to rotate.

[0012] Based on the above scheme, the second rotating mechanism includes a first cavity, a first bevel gear, and a second bevel gear. The first cavity is opened inside the first housing, the drive rod passes through the first cavity, the first bevel gear is fixedly mounted on the drive rod, the second bevel gear is rotatably mounted on the side wall of the first cavity, the first bevel gear meshes with the second bevel gear, and a connecting rod is fixedly mounted between the second bevel gear and the cam.

[0013] Based on the above scheme, the softening mechanism includes a second cavity, a third cavity, and a softening cylinder. The softening box has the second cavity and the third cavity. A drain outlet is provided between the second cavity and the sealing groove. The water outlet pipe is connected to the third cavity. Multiple softening cylinders are fixedly installed in the softening box. The two ends of the softening cylinders are respectively connected to the second cavity and the third cavity. The softening cylinders are filled with ion exchange resin. Screen plates are fixedly installed on both sides of the ion exchange resin in the softening cylinders.

[0014] The beneficial effects of the embodiments of this utility model are as follows: 1. In this utility model, by setting up a filter cylinder and a softening mechanism, impurities in the circulating water can be filtered through the filter cylinder. The filtered circulating water can enter the resin cylinder through the drain and the second cavity, and soften the circulating water through the ion exchange resin, thereby removing calcium and magnesium ions from the circulating water, thus avoiding impurities and calcium and magnesium ions in the circulating water from clogging or corroding the pipes and affecting production efficiency. 2. In this utility model, through the setting of the cleaning mechanism, after filtration is completed, the operation of the first motor can drive the drive rod and drive disk to rotate. At the same time, through the cooperation of the limiting groove and the limiting block, the support disk and filter cylinder are driven to rotate. Thus, under the action of centrifugal force, the surface impurities are thrown out, thereby cleaning the impurities on the surface of the filter cylinder. During the rotation of the filter cylinder, the reciprocating lifting of the cleaning block can drive the cleaning bristles to clean the filter cylinder, thereby improving the cleaning effect of the filter cylinder. The cleaned impurities and some circulating water can be discharged through the impurity discharge port. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of a circulating water filtration device for condensing sodium aluminate solution vapor in one embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional structural diagram of the filter box in the embodiment; Figure 3 for Figure 1 A cross-sectional structural schematic diagram of the first rotating mechanism in the embodiment; Figure 4 for Figure 1 A schematic diagram of the structure of the support disk and drive disk in disassembled state in the embodiment; Figure 5 for Figure 1 The embodiment is shown in the cross-sectional view of the lifting mechanism.

[0017] In the diagram: 1. Box body; 2. Box cover; 3. Inlet pipe; 4. Softening box; 5. Outlet pipe; 6. Sealing groove; 7. Filter cartridge; 8. Support plate; 9. Cleaning block; 10. Guide column; 11. Drive plate; 12. Limiting groove; 13. Limiting block; 14. First housing; 15. First motor; 16. Drive rod; 17. Support plate; 18. Support block; 19. Support spring; 20. Cam; 21. First cavity; 22. First bevel gear; 23. Second bevel gear; 24. Second cavity; 25. Third cavity; 26. Softening cartridge. Detailed Implementation The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0018] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-5As shown, this invention illustrates a circulating water filtration device for sodium aluminate solution vapor condensation according to an embodiment of the present invention. The device includes a filter box, comprising a box body 1 and a box cover 2. The box cover 2 is bolted to the box body 1. A water inlet pipe 3 is connected to the side wall of the box body 1. The device also includes a softening box 4, a sealing groove 6, a filter cylinder 7, a support plate 8, a cleaning mechanism, and a softening mechanism. The softening box 4 is fixedly mounted on the bottom side wall of the filter box, and a water outlet pipe 5 is connected to the side wall of the softening box 4. The sealing groove 6 is formed on the inner bottom wall of the box body 1. The filter cylinder 7 is installed inside the box body 1, with its bottom end extending into the sealing groove 6 and abutting against the bottom of the groove. A support plate 8 is fixedly mounted on the top of the filter cylinder 7. The cleaning mechanism is located inside the box body 1 for cleaning the filter cylinder 7. The softening mechanism is located inside the softening box 4 for softening the circulating water. Specifically, after the circulating water enters the filter box through the water inlet pipe 3, it can be filtered through the filter cylinder 7.

[0024] Reference Figures 2-4 The cleaning mechanism includes a cleaning block 9, a guide column 10, a first rotating mechanism, and a lifting mechanism. The cleaning block 9 is located inside the housing 1 on one side of the filter cartridge 7. Cleaning bristles are evenly distributed on the sidewall of the cleaning block 9, contacting the sidewall of the filter cartridge 7. The guide column 10 is fixedly mounted on the bottom sidewall of the housing 1, with its top end contacting the housing cover 2. The guide column 10 passes through the cleaning block 9 and is slidably connected to it. The first rotating mechanism is located between the housing cover 2 and the support plate 8, driving the support plate 8 to rotate. The lifting mechanism is located between the housing cover 2 and the cleaning block 9, driving the cleaning block 9 to reciprocate on the guide column 10. Additionally, a discharge port is provided on the sidewall of the filter housing, with a built-in discharge control valve. The first rotating mechanism includes a drive groove, a limiting groove 12, a limiting block 13, and a drive mechanism. The drive groove is located on the bottom sidewall of the housing cover 2, and a drive disc 11 is rotatably mounted inside the bottom of the drive groove. A limiting groove 12 is provided on the bottom side wall of the support plate 8, and a limiting block 13 is fixedly provided on the top side wall of the support plate 8. The limiting block 13 extends into the limiting groove 12 and abuts against the bottom of the limiting groove 12. The limiting block 13 and the limiting groove 12 are adapted to each other. The drive mechanism is provided on the box cover 2 and is used to control the drive plate 11 to rotate. The drive mechanism includes a first housing 14 and a first motor 15. The first housing 14 is fixedly provided on the top side wall of the box cover 2, and the first motor 15 is installed on the top side wall of the first housing 14. A drive rod 16 is fixedly provided between the output end of the first motor 15 and the drive plate 11. Specifically, after filtration, the operation of the first motor 15 can drive the drive rod 16 and the drive plate 11 to rotate. At the same time, through the cooperation of the limiting groove 12 and the limiting block 13, the support plate 8 and the filter cylinder 7 are driven to rotate, so that the impurities on the surface can be thrown out under the action of centrifugal force, thereby cleaning the impurities on the surface of the filter cylinder 7.

[0025] Reference Figures 2-5 The lifting mechanism includes a support plate 17, a support block 18, and a reciprocating movement mechanism. The support plate 17 is slidably disposed within the first housing 14. The support block 18 is fixedly disposed on the bottom sidewall of the support plate 17. The bottom sidewall of the support block 18 penetrates the inner bottom wall of the first housing 14 and the cover 2 and is fixedly connected to the cleaning block 9. The reciprocating movement mechanism is disposed within the first housing 14 and is used to drive the support plate 17 to reciprocate within the first housing 14. The reciprocating movement mechanism includes a support spring 19, a cam 20, and a second rotation mechanism. The support spring 19 is fixedly disposed between the inner bottom wall of the first housing 14 and the support plate 17. The cam 20 is rotatably disposed within the first housing 14, and the sidewall of the cam 20 contacts the sidewall of the support plate 17. The second rotation mechanism is disposed within the first housing 14 and is used to drive the cam 20 to rotate. The second rotation mechanism includes a first cavity 21, a first bevel gear 22, and a second bevel gear 23. The first cavity 21 is opened within the first housing 14 and drives the cam 20 to rotate. Rod 16 passes through the first cavity 21. The first bevel gear 22 is fixedly mounted on the drive rod 16. The second bevel gear 23 is rotatably mounted on the side wall of the first cavity 21. The first bevel gear 22 and the second bevel gear 23 mesh with each other. A connecting rod is fixedly mounted between the second bevel gear 23 and the cam 20. Specifically, during the rotation of the drive rod 16, the first bevel gear 22 can be driven to rotate. At the same time, through the meshing of the first bevel gear 22 and the second bevel gear 23, the second bevel gear 23, the connecting rod, and the cam 20 can be driven to rotate. At this time, the support plate 17 can be pressed against the surface of the cam 20 under the action of the support spring 19. Thus, the support plate 17, the support block 18, and the cleaning block 9 can be driven to reciprocate in the height direction by the squeezing of the support plate 17 during the rotation of the cam 20. Thus, the filter cartridge 7 can be cleaned by the cleaning brush bristles, thereby improving the cleaning effect of the filter cartridge 7. The cleaned impurities and some circulating water can be discharged through the discharge port.

[0026] Reference Figure 1 and Figure 2 The softening mechanism includes a second cavity 24, a third cavity 25, and a softening cylinder 26. The softening box 4 has the second cavity 24 and the third cavity 25. A drain outlet is provided between the second cavity 24 and the sealing groove 6. The outlet pipe 5 is connected to the third cavity 25. Multiple softening cylinders 26 are fixedly installed in the softening box 4. The two ends of the softening cylinder 26 are connected to the second cavity 24 and the third cavity 25, respectively. The softening cylinder 26 is filled with softening resin. Screen plates are fixedly installed on both sides of the softening resin in the softening cylinder 26. Specifically, the filtered circulating water can enter the resin cylinder through the drain outlet and the second cavity 24, and soften the circulating water through the ion exchange resin, thereby removing calcium and magnesium ions from the circulating water. This prevents impurities and calcium and magnesium ions in the circulating water from clogging or corroding the pipes and affecting production efficiency.

[0027] It should also be noted that the filtration accuracy of filter cartridge 7 is below 1 micrometer, which can prevent impurities attached to the surface of filter cartridge 7 or broken impurities from passing through filter cartridge 7 under the push of the bristles.

[0028] In this embodiment, during use, after the operator introduces circulating water into the filter box through the inlet pipe 3, the circulating water can be filtered through the filter cylinder 7. The filtered circulating water can then enter the resin cylinder through the drain outlet and the second cavity 24, where it is softened by ion exchange resin, thereby removing calcium and magnesium ions from the circulating water. This prevents impurities and calcium and magnesium ions from clogging or corroding the pipes and affecting production efficiency. After filtration, the operation of the first motor 15 drives the drive rod 16 and drive disc 11 to rotate. Simultaneously, the cooperation of the limiting groove 12 and the limiting block 13 drives the support disc 8 and filter cylinder 7 to rotate, thereby throwing off surface impurities under centrifugal force, thus cleaning the surface of the filter cylinder 7. During the rotation of 16, the first bevel gear 22 can be driven to rotate. At the same time, the meshing of the first bevel gear 22 and the second bevel gear 23 drives the second bevel gear 23, the connecting rod and the cam 20 to rotate. At this time, the support plate 17 can be pressed against the surface of the cam 20 under the action of the support spring 19. Thus, the support plate 17, the support block 18 and the cleaning block 9 can be driven to move back and forth in the height direction by the squeezing of the support plate 17 during the rotation of the cam 20. Thus, the filter cartridge 7 can be cleaned by the cleaning brush bristles, thereby improving the cleaning effect of the filter cartridge 7. The impurities and some circulating water after cleaning can be discharged through the discharge port. After a period of use, the cover 2 and the filter cartridge 7 can be disassembled by tightening the bolts, so as to facilitate the replacement of the filter cartridge 7.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A circulating water filtration device for condensing sodium aluminate solution vapor, comprising a filter box, the filter box comprising a box body (1) and a box cover (2), the box cover (2) being bolted to the box body (1), and a water inlet pipe (3) being provided in connection with the side wall of the box body (1), characterized in that, Also includes: The softening box (4) is fixedly installed on the bottom side wall of the filter box, and the side wall of the softening box (4) is connected to the water outlet pipe (5). A sealing groove (6) is formed on the inner bottom wall of the housing (1); The filter cylinder (7) is provided inside the housing (1). The bottom end of the filter cylinder (7) extends into the sealing groove (6) and abuts against the bottom of the sealing groove (6). Support plate (8), the top of the filter cylinder (7) is fixedly provided with the support plate (8); A cleaning mechanism is provided inside the housing (1) for cleaning the filter cartridge (7); A softening mechanism is provided inside the softening tank (4) for softening circulating water.

2. The circulating water filtration device for condensing sodium aluminate solution vapor according to claim 1, characterized in that, The cleaning facility includes: Cleaning block (9): The cleaning block (9) is provided inside the housing (1) on one side of the filter cylinder (7). The side wall of the cleaning block (9) is evenly distributed with cleaning bristles, and the cleaning bristles are in contact with the side wall of the filter cylinder (7). Guide post (10), the guide post (10) is fixedly installed on the bottom side wall of the box (1), the top end of the guide post (10) is in contact with the box cover (2), the guide post (10) passes through the cleaning block (9) and is slidably connected with the cleaning block (9); A first rotating mechanism is disposed between the box cover (2) and the support plate (8) for driving the support plate (8) to rotate; A lifting mechanism is provided between the box cover (2) and the cleaning block (9) for driving the cleaning block (9) to reciprocate on the guide post (10).

3. A circulating water filtration device for condensing sodium aluminate solution vapor according to claim 2, characterized in that, The first rotating mechanism includes: A drive groove is formed on the bottom side wall of the box cover (2), and a drive disc (11) is rotatably arranged in the bottom of the drive groove. The limiting groove (12) is provided on the bottom side wall of the drive disk (11). The limiting block (13) is fixedly provided on the top side wall of the support plate (8). The limiting block (13) extends into the limiting groove (12) and abuts against the bottom of the limiting groove (12). The shape of the limiting block (13) is adapted to the limiting groove (12). A drive mechanism is provided on the cover (2) and is used to control the drive disk (11) to rotate.

4. A circulating water filtration device for condensing sodium aluminate solution vapor according to claim 3, characterized in that, The drive mechanism includes: The first housing (14) is fixedly mounted on the top side wall of the box cover (2); The first motor (15) is mounted on the top side wall of the first housing (14), and a drive rod (16) is fixedly arranged between the output end of the first motor (15) and the drive disk (11).

5. A circulating water filtration device for condensing sodium aluminate solution vapor according to claim 4, characterized in that, The lifting mechanism includes: A support plate (17) is slidably disposed within the first housing (14); Support block (18), the support block (18) is fixedly installed on the bottom side wall of the support plate (17), the bottom side wall of the support block (18) penetrates the inner bottom wall of the first housing (14) and the box cover (2) and is fixedly connected to the cleaning block (9); A reciprocating movement mechanism is disposed inside the first housing (14) and is used to drive the support plate (17) to reciprocate within the first housing (14).

6. A circulating water filtration device for condensing sodium aluminate solution vapor according to claim 5, characterized in that, The reciprocating movement mechanism includes: A support spring (19) is fixedly disposed between the inner bottom wall of the first housing (14) and the support plate (17); Cam (20), which is rotatably disposed in the first housing (14), and the side wall of the cam (20) contacts the side wall of the support plate (17); The second rotating mechanism is disposed inside the first housing (14) and is used to drive the cam (20) to rotate.

7. A circulating water filtration device for condensing sodium aluminate solution vapor according to claim 6, characterized in that, The second rotating mechanism includes: The first cavity (21) is formed inside the first housing (14), and the drive rod (16) passes through the first cavity (21). The first bevel gear (22) is fixedly mounted on the drive rod (16); The second bevel gear (23) is rotatably mounted on the side wall of the first cavity (21). The first bevel gear (22) meshes with the second bevel gear (23). A connecting rod is fixedly provided between the second bevel gear (23) and the cam (20).

8. A circulating water filtration device for condensing sodium aluminate solution vapor according to claim 7, characterized in that, The softening mechanism includes: The softening box (4) has a second cavity (24) and a third cavity (25). The softening box (4) has a second cavity (24) and a third cavity (25). A drain outlet is provided between the second cavity (24) and the sealing groove (6). The water outlet pipe (5) is connected to the third cavity (25). A softening cylinder (26) is fixedly installed inside the softening box (4). The two ends of the softening cylinder (26) are respectively connected to the second cavity (24) and the third cavity (25). The softening cylinder (26) is filled with ion exchange resin. A sieve plate is fixedly installed on both sides of the ion exchange resin inside the softening cylinder (26).

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