Water softening equipment

Abstract

The utility model relates to the field of water softening equipment, in particular to water softening equipment. Comprising a shell and a salt tank, a vertical telescopic cavity is vertically arranged in the shell in a sliding mode, the vertical telescopic cavity is filled with resin particles, a first two-way connector is arranged on the shell and communicated to the lower portion of the vertical telescopic cavity in the shell, and the first two-way connector is communicated with the salt tank through a water pipe at one connector outside the shell; one port of the first two-way connector is communicated with an external fresh water source, the other port of the first two-way connector is communicated with an external fresh water source, the vertical telescopic cavity shrinks in fresh water and compresses the distance between resin particles, the vertical telescopic cavity expands in strong brine and diffuses the distance between the resin particles, the top of the shell is communicated with a second two-way connector, and two ports of the second two-way connector are used for discharging sewage and soft water respectively. The vertical telescopic cavity comprises a fixed cylinder and a movable cylinder, the fixed cylinder and the movable cylinder are attached in a sliding mode, and the movable cylinder is hollow. The distance between resin particles can be adjusted when fresh water and strong brine are introduced respectively, the regeneration efficiency is improved, and salt consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water softening equipment, specifically a water softening device. Background Technology

[0002] Water softening equipment (water softeners) is a system that removes calcium and magnesium ions from water through ion exchange. Its core component is a sodium-type strong acid cation exchange resin. When hard water flows through the resin tank, the resin adsorbs calcium and magnesium ions and releases sodium ions, producing softened water. When the resin becomes saturated, a high-concentration sodium chloride solution in the brine tank replaces the impurities adsorbed by the resin, and the softening capacity is restored after rinsing. Water softening equipment consists of three main components: a resin tank, an intelligent control valve, and a brine tank. It effectively solves problems such as scaling, increased energy consumption, and poor washing effect caused by hard water. It is widely used in household, commercial, and industrial settings, featuring high automation and stable hardness removal efficiency. However, it requires periodic salt replenishment and will slightly increase the sodium content of the output water.

[0003] Regarding water softening equipment, Chinese patent CN218202281U describes a water softening device that mainly includes a resin softening tank and a brine tank. A water distributor is installed on the upper side of the resin softening tank, connected to a hard water inlet pipe and a brine inlet pipe via a three-way connector. A first flow meter and a first electrically controlled valve are installed on the hard water inlet pipe. The brine tank is connected to the resin softening tank via a brine inlet pipe, which is equipped with a second flow meter and a second electrically controlled valve. A liquid pump is also installed on the brine inlet pipe. A soft water outlet pipe and a wastewater outlet pipe are connected to the bottom of the resin softening tank. Multiple resin filter plates are installed at intervals inside the resin softening tank, with resin particles filling the spaces between adjacent filter plates.

[0004] However, in the existing technology, by connecting two filter plates to the upper and lower ends of the mounting frame respectively, and then filling the middle with resin particles, the distance between the resin particles is relatively close. This close arrangement of resin particles is only suitable for the water softening stage. However, in the regeneration stage using concentrated brine, the closely distributed resin particles are unable to displace the adsorbed calcium and magnesium ions. Instead, the resin particles need to be in a loose state to improve regeneration efficiency and reduce salt consumption. Therefore, the optimal state of the resin particles differs between the water softening and regeneration stages, and the existing technology cannot simultaneously meet the optimal requirements of the resin particles in different stages. Based on this, a water softening device is proposed. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a water softening device.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] This utility model discloses a water softening device, comprising a shell and a salt tank. A vertically sliding vertical expansion cavity is provided inside the shell, and the vertical expansion cavity is filled with resin particles. A first double-connector is provided on the shell, connecting to the lower part of the vertical expansion cavity inside the shell. One interface of the first double-connector is connected to the salt tank via a water pipe on the outside of the shell, and the other interface of the first double-connector is connected to an external fresh water source. The vertical expansion cavity contracts and compresses the spacing between the resin particles in fresh water, and expands and diffuses the spacing between the resin particles in concentrated brine.

[0008] Furthermore, a second double-connector is provided at the top of the housing, and the two ports of the second double-connector are used to discharge sewage and soft water, respectively.

[0009] Furthermore, a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve are respectively installed on the interfaces of the salt tank, the external fresh water source, the sewage outlet, and the soft water outlet. The first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve are all electrically connected to the control device.

[0010] Furthermore, the vertical telescopic cavity includes a fixed cylinder and a movable cylinder, which are slidably fitted together, and the movable cylinder is hollow inside.

[0011] Furthermore, the top of the fixed cylinder is provided with an annular groove, and the edge of the movable cylinder is slidably disposed within the annular groove.

[0012] Furthermore, the inner wall of the housing is provided with limiting flanges at the bottom of the fixed cylinder and the top of the movable cylinder, respectively.

[0013] Furthermore, the inner wall of the housing is provided with several sets of limiting flanges, and a vertical telescopic cavity is provided between each set of limiting flanges.

[0014] Furthermore, a water pump is provided on the outside of the first double-connector.

[0015] The beneficial effects of this invention are as follows: By setting a vertical telescopic cavity inside the shell, the resin should remain in a relatively compact state during the softening operation of the water softener. This is to ensure that the water flow can pass through the resin layer evenly, thereby improving the ion exchange efficiency and reducing the calcium ( ) in the water. ) and magnesium ( ) ions fully react with sodium ( ) on the resin particles Ion exchange occurs, achieving the desired softening effect. During the regeneration stage, especially when using a countercurrent regeneration process, the resin particles need to be in a relatively loose state so that the concentrated brine can more fully contact the resin particles and effectively displace the adsorbed calcium and magnesium ions, improving regeneration efficiency. Simultaneously, the loose structure facilitates ion diffusion, reduces flow resistance, and makes it easier for subsequent cleaning processes to thoroughly remove residual salt and impurities. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the vertical telescopic cavity compression structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the vertical telescopic cavity expansion structure of this utility model;

[0019] Explanation of reference numerals in the attached drawings: 1. Shell; 2. Salt tank; 3. First double-way connector; 4. Water pump; 5. First solenoid valve; 6. Second solenoid valve; 7. Second double-way connector; 8. Third solenoid valve; 9. Fourth solenoid valve; 10. Fixed cylinder; 11. Movable cylinder. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] like Figures 1-2 As shown, a water softening device of this utility model includes a shell 1 and a salt tank 2. A vertical telescopic cavity is vertically slidably arranged inside the shell 1. The vertical telescopic cavity is filled with resin particles. A first double-connector 3 is provided on the shell 1 to connect to the bottom of the vertical telescopic cavity inside the shell 1. One of the interfaces of the first double-connector 3 outside the shell 1 is connected to the salt tank 2 through a water pipe. The other interface of the first double-connector 3 is connected to an external fresh water source. The vertical telescopic cavity contracts and compresses the spacing between the resin particles in fresh water. The vertical telescopic cavity expands and diffuses the spacing between the resin particles in concentrated brine.

[0022] Because the spacing between the resin particles in existing water softeners remains constant throughout different operating stages, the spacing between the resin particles is relatively large when softening hard water. This results in a shorter contact time between the calcium and magnesium ions in the hard water and the sodium ions on the resin particles, leading to low ion exchange efficiency between the resin particles and the hard water. Conversely, when regenerating the ions on the resin particles with concentrated brine, the spacing between the resin particles is smaller. The sodium ions in the concentrated brine cannot adequately flush away the calcium and magnesium ions adhering to the resin particles, and the concentrated brine also cannot fully contact the resin particles, resulting in low sodium ion regeneration efficiency and a higher consumption of concentrated brine.

[0023] In this embodiment, a vertical telescopic cavity is provided inside the housing 1, and resin particles are filled inside the vertical telescopic cavity. When the vertical telescopic cavity is in fresh water, due to the lower density of fresh water, the vertical telescopic cavity is compressed under the action of gravity, thereby reducing the spacing between the resin particles inside the vertical telescopic cavity. However, when concentrated brine is introduced to facilitate the regeneration of sodium ions on the resin particles, due to the higher density of concentrated brine, the buoyancy force on the vertical telescopic cavity is greater than the gravity, thus the space of the vertical telescopic cavity expands, increasing the spacing between the resin particles inside. Since the first double-connector 3 for introducing hard water and concentrated brine is located below the vertical telescopic cavity, the liquid needs to diffuse from bottom to top after entering the housing 1. To facilitate liquid flow, the top and bottom of the vertical telescopic cavity are screen structures.

[0024] By incorporating a vertical expansion cavity within the housing 1, the resin in the water softener should remain relatively compact during the softening process. This ensures that water flows evenly through the resin layer, thereby improving ion exchange efficiency and reducing calcium ( ) in the water. ) and magnesium ( ) ions fully react with sodium ( ) on the resin particles Ion exchange occurs, achieving the desired softening effect. During the regeneration stage, especially when using a countercurrent regeneration process, the resin particles need to be in a relatively loose state so that the concentrated brine can more fully contact the resin particles and effectively displace the adsorbed calcium and magnesium ions, improving regeneration efficiency. Simultaneously, the loose structure facilitates ion diffusion, reduces flow resistance, and makes it easier for subsequent cleaning processes to thoroughly remove residual salt and impurities.

[0025] Furthermore, a second double-connector 7 is connected to the top of the shell 1. The two ports of the second double-connector 7 are used to discharge sewage and soft water, respectively. A first solenoid valve 5, a second solenoid valve 6, a third solenoid valve 8 and a fourth solenoid valve 9 are respectively installed on the interfaces of the salt tank 2, the external fresh water source, the sewage outlet and the soft water outlet. The first solenoid valve 5, the second solenoid valve 6, the third solenoid valve 8 and the fourth solenoid valve 9 are all electrically connected to the control device.

[0026] The first double-connector 3 connects to an external freshwater source as a freshwater connector, and to the brine tank 2 as a concentrated brine connector. A soft water connector is used to discharge soft water, and a wastewater connector is used to discharge wastewater. Each connector is equipped with a solenoid valve, and each solenoid valve is electrically connected to a control device. During water softening, the solenoid valves corresponding to the freshwater and soft water connectors—namely, the second solenoid valve 6 and the fourth solenoid valve 9—are opened, allowing freshwater to flow in and be softened before being discharged from the soft water connector. During the regeneration stage, the first solenoid valve 5 and the third solenoid valve 8 corresponding to the concentrated brine and wastewater connectors are opened, allowing concentrated brine to be introduced for sodium ion regeneration, and then discharged through the wastewater connector. During the cleaning stage, the second solenoid valve 6 and the third solenoid valve 8 are opened, allowing freshwater to clean away residual salts before the wastewater is discharged through the wastewater connector.

[0027] In one embodiment, the vertical telescopic cavity includes a fixed cylinder 10 and a movable cylinder 11, which are slidably fitted together, and the movable cylinder 11 is hollow inside; the top of the fixed cylinder 10 is provided with an annular groove, and the edge of the movable cylinder 11 is slidably disposed in the annular groove;

[0028] The movable cylinder 11 extends into the annular groove from the edge of the fixed cylinder 10 and moves up and down within the height range of the annular groove. Since the movable cylinder 11 is hollow inside, it experiences greater buoyancy in concentrated brine and less buoyancy in fresh water. By introducing fresh water and concentrated brine respectively, the movable cylinder 11 can move up and down according to the different salt contents of the introduced liquids.

[0029] Furthermore, the inner wall of the housing 1 is provided with limiting flanges at the bottom of the fixed cylinder 10 and the top of the movable cylinder 11 respectively; the limiting flange at the bottom of the fixed cylinder 10 limits it on the one hand and supports it on the other hand, while the limiting flange at the top of the movable cylinder 11 is used to limit the movable cylinder 11 and prevent the movable cylinder 11 from detaching from the annular groove.

[0030] Furthermore, the housing 1 is provided with several sets of limiting flanges, and each set of limiting flanges is provided with a vertical telescopic cavity; by providing several sets of vertical telescopic cavities, the hard water that is introduced is softened by the resin particles in the multiple vertical telescopic cavities, which can improve the softening effect of hard water.

[0031] Furthermore, a water pump 4 is provided on the outside of the first double-connector 3; the water pump 4 is electrically connected to the control device. When it is necessary to introduce fresh water or concentrated salt water into the housing 1, the corresponding solenoid valve is opened, and then the water pump 4 is opened to increase the flow rate of the liquid.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A water softening device, characterized in that: The device includes a shell and a salt container. A vertically sliding cavity is provided inside the shell and filled with resin particles. A first double-connector is provided on the shell and connects to the lower part of the vertically sliding cavity inside the shell. One interface of the first double-connector is connected to the salt container through a water pipe on the outside of the shell, and the other interface of the first double-connector is connected to an external fresh water source. The vertically sliding cavity contracts and compresses the spacing between the resin particles in fresh water, and expands and diffuses the spacing between the resin particles in concentrated brine.

2. The water softening equipment according to claim 1, characterized in that: The top of the housing is connected to a second double-port connector, the two ports of which are used to discharge sewage and soft water, respectively.

3. The water softening equipment according to claim 2, characterized in that: The interfaces of the salt tank, the external fresh water source, the sewage outlet, and the soft water outlet are respectively equipped with a first solenoid valve, a second solenoid valve, a third solenoid valve, and a fourth solenoid valve, all of which are electrically connected to the control device.

4. The water softening equipment according to claim 1, characterized in that: The vertical telescopic cavity includes a fixed cylinder and a movable cylinder, which slide in contact with each other, and the movable cylinder is hollow inside.

5. A water softening device according to claim 4, characterized in that: The top of the fixed cylinder is provided with an annular groove, and the edge of the movable cylinder is slidably disposed within the annular groove.

6. The water softening equipment according to claim 5, characterized in that: Limiting flanges are respectively provided on the inner wall of the housing at the bottom of the fixed cylinder and the top of the movable cylinder.

7. A water softening device according to claim 6, characterized in that: The inner wall of the housing is provided with several sets of limiting flanges, and a vertical telescopic cavity is provided between each set of limiting flanges.

8. The water softening equipment according to claim 1, characterized in that: A water pump is installed on the outside of the first double-connector.

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