Salt box control mechanism and soft water heater

Abstract

The invention discloses a salt box control mechanism and a soft water heater, and the salt box control mechanism comprises a salt box filled with soft water salt; one end of the water injection pipe is connected with water to be treated through a water inlet pipe, the other end of the water injection pipe extends into the salt tank, and a stop valve is arranged on the water injection pipe; the salt valve is arranged in the salt box, the salt valve is connected with a salt suction pipe to output saturated salt water, and a valve is arranged on the salt suction pipe; a salt cavity with a large inner diameter and a pipe cavity with a small inner diameter are formed in the salt valve, one end of the salt cavity is communicated with the salt suction pipe, the other end of the salt cavity is communicated with the pipe cavity, and the pipe cavity is arranged on one side of the salt cavity and extends downwards to abut against the inner bottom wall of the salt box. According to the salt box, saturated salt water in the salt box can be absorbed in an unpowered mode to form a dry type salt box, the salt climbing phenomenon is avoided, the water injection amount can be flexibly adjusted according to requirements, the amount of the formed saturated salt water can meet the requirement for regeneration of soft water resin, and waste is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment equipment, and in particular to a salt box control mechanism and a soft water water heater. Background Art

[0002] A water heater is a device that uses various physical principles to increase the temperature of cold water into hot water within a certain period of time. According to different principles, it can be divided into electric water heaters, gas water heaters, solar water heaters, etc. At present, with the improvement of people's living standards, people's requirements for daily water are getting higher and higher. Due to factors such as geography, the water quality in various parts of the country is uneven, and the water quality resources vary greatly. The water quality in most areas is hard. Long-term use of hard water will make people's skin dry, rough, and age quickly. Therefore, people's demand for soft water continues to rise. Soft water contains no or less soluble calcium and magnesium compounds. Using soft water can effectively inhibit fungi, delay skin aging, and prevent scaling of heated water. It is beneficial to life.

[0003] Based on this, a soft water heater that integrates a water softening component with a water heater component has appeared on the market, so as to remove calcium and magnesium ions in the water through the water softening resin and reduce the hardness of the water. The water softening component is equipped with a salt box, in which soft water salt is provided. The soft water salt can be dissolved by injecting water into the salt box to form saturated salt water. When the adsorption capacity of the soft water resin decreases after long-term use, the saturated salt water can be transported to the water softening component to regenerate the soft water resin, so that the soft water resin can be used again.

[0004] The water level control and salt absorption control in the existing salt box are both achieved through the salt valve. The salt valve is in the open state during water injection and salt absorption until the water injection and salt absorption are completed. However, due to the structural factors of the salt valve, the saturated salt water in the salt box cannot be completely absorbed when the soft water resin is regenerated. There will be a considerable amount of saturated salt water in the salt box, and the salt box cannot form a real dry salt box, which will cause salt climbing in the salt box. In addition, when the water level in the salt box is high, the floating part floats up to drive the salt valve to close the water injection. The floating part must float up when the water level in the salt box reaches a certain height, that is, the amount of water injected into the salt box is fixed and generally cannot be adjusted. The amount of water injected cannot be flexibly adjusted according to actual needs, and the applicable working conditions are limited. Summary of the invention

[0005] In order to solve the above-mentioned defects in the prior art, the purpose of the present invention is to provide a salt box control mechanism and a soft water water heater, which can not only unpoweredly absorb the saturated brine in the salt box to form a dry salt box and avoid salt climbing, but also flexibly adjust the water injection amount according to demand so that the amount of saturated brine formed can meet the demand for regeneration of soft water resin without causing waste.

[0006] A first aspect of the present invention provides a salt box control mechanism, comprising:

[0007] a salt box, which contains water softening salt;

[0008] A water injection pipe, one end of which is connected to the water to be treated through the water inlet pipe, and the other end of which extends into the salt box, and a stop valve is provided on the water injection pipe;

[0009] Salt valve, which is arranged in the salt box, is connected to a salt suction pipe to output saturated brine, and a valve is arranged on the salt suction pipe;

[0010] The interior of the salt valve is provided with a salt cavity with a large inner diameter and a tube cavity with a small inner diameter. One end of the salt cavity is connected to the salt absorption pipe, and the other end of the salt cavity is connected to the tube cavity. The tube cavity is arranged on one side of the salt cavity and extends downward to abut against the inner bottom wall of the salt box.

[0011] As a preferred embodiment, in the first aspect of the present invention, the water injection pipe and the salt absorption pipe are the same water pipe, the stop valve and the valve are the same electronic valve, and the electronic valve is provided with a dual-channel structure for water injection and salt absorption respectively.

[0012] As a preferred embodiment, in the first aspect of the present invention, the salt valve includes a valve seat, a sleeve and an upper cover, one end of the valve seat is connected to the water pipe, the sleeve is sleeved on the other end of the valve seat and its upper end is covered with the upper cover to form a salt cavity in the sleeve, and the tube cavity is arranged on the side of the sleeve and connected to the salt cavity in the sleeve.

[0013] As a preferred embodiment, in the first aspect of the present invention, the side of the other end of the valve seat is provided with a slot that passes through from top to bottom, and the side of the sleeve is provided with a matching insert tube corresponding to the slot, the upper end of the insert tube is connected to the salt cavity, and the lower end of the insert tube is inserted in the slot and extends to abut the inner bottom wall of the salt box to form a lumen in the insert tube.

[0014] As a preferred embodiment, in the first aspect of the present invention, a connecting portion is provided at the connection between the sleeve and the other end of the valve seat, and a corresponding sealing member is provided at the corresponding connecting portion in the valve seat. The sealing member is connected to a guide rod, and the guide rod can be moved up and down to seal and pass through the upper cover upward and is arranged on a fixed frame to drive the sealing member to move up and down to seal or open the connecting portion. The fixed frame is fixed on the water pipe, and a floating member is provided on the guide rod.

[0015] As a preferred embodiment, in the first aspect of the present invention, the guide rod can move up and down relative to the upper cover;

[0016] Alternatively, the upper cover is an elastic structure, a fixing ring is pressed on the circumferential edge of the top end of the upper cover, and the fixing ring is fixedly connected to the upper end of the sleeve.

[0017] As a preferred embodiment, in the first aspect of the present invention, a float is provided in the salt chamber, and the float is arranged corresponding to the connection part, and the float can fall down to block the connection part or float up to open the connection part.

[0018] As a preferred embodiment, in the first aspect of the present invention, the float is guided and positioned by a float tube, the float tube is arranged in the salt cavity and extends to the inner wall of the sealing connection portion, the float is arranged in the float tube so as to be able to fall down to block the lower end of the float tube or float up to open the lower end of the float tube, the lower end of the float tube is provided with a water hole to communicate with the connection portion, and the upper end of the float tube is provided with a through hole to communicate with the salt cavity;

[0019] The plugging piece is arranged at the bottom of the float tube, and the guide rod is connected with the plugging piece through the float tube.

[0020] As a preferred embodiment, in the first aspect of the present invention, the float tube includes a cylindrical portion with a through hole and an inverted cone portion with a water hole, the float is arranged in the cylindrical portion, the top end of the inverted cone portion is embedded in the bottom end of the cylindrical portion to support the float, and the top end of the inverted cone portion is provided with a groove, which is arranged on the surrounding side of the float in the falling state.

[0021] The second aspect of the present invention provides a soft water water heater, comprising: a water heater body and the above-mentioned salt box control mechanism, the salt box control mechanism is detachably arranged at the bottom of the water heater body, the water heater body comprises a hot water component and a soft water component, the soft water component is connected to the water inlet pipe, and the salt valve is connected to the soft water component via the salt absorption pipe.

[0022] The salt box control mechanism and soft water heater provided by the present invention have the following technical effects:

[0023] First, the lumen of the salt valve extends downward to abut against the inner bottom wall of the salt box, and can completely absorb the salt water in the salt box when absorbing saturated salt water, forming a real dry salt box and avoiding the occurrence of salt climbing. In addition, since the lumen with a small inner diameter is directly connected to the inner bottom wall of the salt box, and its other end is connected to the soft water component through the salt cavity with a large inner diameter via the salt absorption pipe, when the valve on the salt absorption pipe is opened, a negative pressure will be formed in the lumen and the salt cavity, so that according to the Venturi effect, the saturated salt water in the salt box is automatically sucked into the lumen by using the small inner diameter structure of the lumen, and then transported to the soft water component through the salt cavity and the salt absorption pipe in turn, so as to regenerate the soft water resin in the soft water component, without the need for a power pump or the like to provide power. In this way, the salt box control mechanism can realize the unpowered absorption of saturated salt water in the salt box, which not only ensures the formation of a dry salt box, but also has the characteristics of energy saving and consumption reduction, which is conducive to greatly reducing costs.

[0024] Second, a stop valve is provided on the water injection pipe and is connected to the water to be treated through the water inlet pipe. When water needs to be injected into the salt box to dissolve the soft water salt, the required amount of saturated salt water can be obtained according to the degree of reduction in the adsorption capacity of the soft water resin, so as to control the injection time through the stop valve to achieve the purpose of controlling the injection amount. In this way, the salt box control mechanism can flexibly adjust the injection amount according to demand, so that the amount of saturated salt water formed can meet the needs of regeneration of the soft water resin without causing waste, which not only ensures that the soft water component in the water heater can be fully activated to treat water normally and meet the needs of the water heater to output soft water and hot water, but also does not cause waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is an exploded view of the soft water heater of the present invention;

[0026] Figure 2 is an exploded view of the salt box control mechanism of the present invention;

[0027] Figure 3 It is a main structural schematic diagram of the salt box control mechanism of the present invention;

[0028] Figure 4 It is a main structural cross-sectional view of the salt box control mechanism of the present invention;

[0029] Figure 5 It is a cross-sectional view from another perspective of the main structure of the salt box control mechanism of the present invention.

[0030] Reference numerals:

[0031] 1. Salt box; 11. Salt valve cavity; 12. Salt box cavity; 13. Salt box; 2. Salt valve; 21. Valve seat; 211. Socket; 22. Sleeve; 221. Salt cavity; 222. Tube cavity; 223. Insert; 23. Upper cover; 24. Connecting part; 25. Blocking part; 26. Fixing ring; 27. Float; 28. Float tube; 281. Water hole; 282. Through hole; 283. Cylindrical part; 284. Inverted cone; 285. Groove; 3. Water pipe; 4. Guide rod; 5. Floating part; 6. Fixing frame; 61. Bracket; 62. Locking part; 7. Fixing part; 8. Water heater body; 9. Protective cover. DETAILED DESCRIPTION

[0032] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] See also Figure 2-5 The present invention provides a salt box control mechanism, including a salt box 1, a water injection pipe, a salt valve 2 and a salt absorption pipe. The salt box 1 contains soft water salt, one end of the water injection pipe is connected to the water to be treated through the water inlet pipe, and the other end of the water injection pipe extends into the salt box 1. A stop valve is provided on the water injection pipe. The salt valve 2 is provided in the salt box 1. The salt valve 2 is connected to the salt absorption pipe to output saturated salt water, and a valve is provided on the salt absorption pipe. A salt cavity 221 with a large inner diameter and a tube cavity 222 with a small inner diameter are provided inside the salt valve 2. One end of the salt cavity 221 is connected to the salt absorption pipe, and the other end of the salt cavity 221 is connected to the tube cavity 222. The tube cavity 222 is provided on one side of the salt cavity 221 and extends downward to abut against the inner bottom wall of the salt box 1.

[0036] The salt box 1 uses a water injection pipe to introduce external water to be treated through the water inlet pipe to dissolve the soft water salt to form a saturated brine. Since a stop valve is provided on the water injection pipe, the water injection can be stopped through the stop valve after a certain period of water injection or a certain amount of water injection. Based on this, a stop valve is provided on the water injection pipe and the water to be treated is connected through the water inlet pipe. When it is necessary to inject water into the salt box 1 to dissolve the soft water salt, the required amount of saturated brine can be obtained according to the degree of reduction in the adsorption capacity of the soft water resin, so as to control the water injection time through the stop valve to achieve the purpose of controlling the water injection amount. In this way, the salt box control mechanism can flexibly adjust the water injection amount according to demand, so that the amount of saturated brine formed meets the demand for regeneration of the soft water resin without causing waste, which not only ensures that the soft water component in the water heater can be fully activated to treat water normally and meet the demand for the water heater to output soft water and hot water, but also does not cause waste of resources.

[0037] The salt valve 2 is used to absorb the saturated salt water in the salt box 1 and deliver it to the salt absorption pipe. The salt absorption pipe is connected to the soft water component so that the salt valve 2 can be used to absorb the saturated salt water in the salt box 1 and deliver it to the soft water component after the valve is opened. The tube cavity 222 of the salt valve 2 extends downward to abut the inner bottom wall of the salt box 1, and can completely absorb the salt water in the salt box 1 when absorbing the saturated salt water, forming a real dry salt box to avoid the occurrence of salt climbing. In addition, since the tube cavity 222 with a small inner diameter is directly connected to the inner bottom wall of the salt box 1, and its other end is connected to the soft water component through the salt cavity 221 with a large inner diameter via the salt absorption pipe, when the valve on the salt absorption pipe is opened, negative pressure will be formed in the tube cavity 222 and the salt cavity 221, so that according to the Venturi effect, the small inner diameter structure of the tube cavity 222 is used to directly automatically absorb the saturated salt water in the salt box 1 into the tube cavity 222, and then it is delivered to the soft water component through the salt cavity 221 and the salt absorption pipe in turn, so that the soft water resin in the soft water component is regenerated, and no power pump or the like is required to provide power. In this way, the salt box control mechanism can realize unpowered absorption of saturated brine in the salt box 1, which not only ensures the formation of a dry salt box, but also has the characteristics of energy saving and consumption reduction, which is conducive to greatly reducing costs.

[0038] As a most basic structure, the water injection pipe and the salt absorption pipe are two different pipes. The stop valve is installed on the water injection pipe to directly control the water injection time, and the valve is installed on the salt absorption pipe to directly control the opening and closing of salt absorption. The stop valve and the valve can be manual valves or electric valves. The manual valve needs to be set outside for easy opening and closing, and it has certain requirements for the installation structure. The electric valve can be directly installed in the soft water heater to be electrically connected to the control device, so as to realize automatic control of water injection time and salt absorption.

[0039] In the present invention, the water pipe and the salt absorption pipe are the same water pipe 3, the stop valve and the valve are the same electronic valve, and the electronic valve is provided with a dual-channel structure for water injection and salt absorption respectively. The electronic valve is electrically connected to the control device, and the control device can be the control mechanism of the soft water heater. The electronic valve can be directly arranged in the soft water heater, which is convenient for installation, can realize automatic control of water injection and salt absorption, and has a simple structure. In this way, the salt valve 2 is connected to the water pipe 3, and the water pipe 3 is provided with a dual-channel electronic valve, one of the channels of the electronic valve is connected to the external water to be treated through the water inlet pipe, and the other channel of the electronic valve is connected to the soft water component. When there is a need for water injection, one of the channels of the electronic valve is opened by the control device, and the external water to be treated is introduced into the salt box 1 through the water inlet pipe, the water pipe 3, the valve seat 21 of the salt valve 2, the salt cavity 221 and the tube cavity 222 to dissolve the soft water salt to form saturated brine, and the water injection time can be adjusted according to the demand to obtain the required amount of saturated brine. When there is a need to absorb salt, the control device is used to open another passage of the electronic valve, and the saturated salt water in the salt box 1 is introduced into the soft water component through the tube cavity 222, the salt cavity 221, the valve seat 21 and the water pipe 3 by the Venturi effect to regenerate the soft water resin.

[0040] On the basis of this structure, the salt valve 2 includes a valve seat 21, a sleeve 22 and an upper cover 23. One end of the valve seat 21 is connected to the water pipe 3. The sleeve 22 is sleeved on the other end of the valve seat 21 and its upper end is covered with the upper cover 23 to form a salt cavity 221 in the sleeve 22. The tube cavity 222 is arranged on the side of the sleeve 22 and is connected to the salt cavity 221 in the sleeve 22.

[0041] The valve seat 21 is arranged at the bottom of the salt valve 2, and one end of the valve seat 21 is a pipe structure for connecting with the water pipe 3. Specifically, one end of the valve seat 21 can realize a detachable connection with the water pipe 3 through a plug-in structure. One end of the water pipe 3 is placed outside the salt box 1 to connect the water inlet pipe and the soft water component through an electronic valve. The other end of the water pipe 3 extends downward into the salt box 1 and plugs into one end of the valve seat 21, and is locked by a fixing member 7 to realize a fixed and sealed connection between the water pipe 3 and the valve seat 21, ensuring stable water injection and absorption of saturated salt water, and avoiding water leakage. The fixing member 7 can be a threaded sleeve, a rivet, a screw or other structure. When installing the fixing member 7, the locking force needs to be controlled to ensure the sealing of the connection between the water pipe 3 and the valve seat 21 to avoid water leakage, and to avoid deformation of the connection between the water pipe 3 and the valve seat 21 due to excessive locking, so as to ensure smooth water injection and absorption of saturated salt water.

[0042] The other end of the valve seat 21 is a base structure, which is connected to the pipeline structure. The sleeve 22 is arranged on the base structure. The connection between the two is sealed and docked to form a water channel to ensure stable water injection and absorption of saturated salt water and avoid water leakage. The salt chamber 221 and the tube chamber 222 connected in the sleeve 22 are arranged vertically in parallel to form a chamber of a Venturi structure to achieve unpowered salt absorption. The upper end of the sleeve 22 is an open structure, and the upper cover 23 sealing cover is arranged at the upper end of the sleeve 22, which can cooperate with the inner bottom wall of the salt box 1 to form a sealed chamber in the salt chamber 221 and the tube chamber 222, so that when the salt absorption passage of the electronic valve is opened, the salt chamber 221 and the tube chamber 222 will form a negative pressure, so that according to the Venturi effect, the small inner diameter structure of the tube chamber 222 is used to directly automatically absorb the saturated salt water in the salt box 1 into the tube chamber 222, and then transport it to the soft water component through the salt chamber 221, the valve seat 21 and the water pipe 3 in turn, so as to regenerate the soft water resin in the soft water component, without the need for a power pump or the like to provide power. Among them, the purpose of setting the upper cover 23 is to achieve the sealing of the upper end of the sleeve 22, and it can be any hard cover, soft cover, or elastic cover as long as it is a sealable cover structure.

[0043] A slot 211 extending vertically through the side of the other end of the valve seat 21 is provided, and a matching insert 223 is provided on the side of the sleeve 22 corresponding to the slot 211. The upper end of the insert 223 is connected to the salt cavity 221, and the lower end of the insert 223 is inserted into the slot 211 and extends to abut against the inner bottom wall of the salt box 1 to form a lumen 222 in the insert 223.

[0044] The slot 211 is arranged on the side of the base structure of the valve seat 21, and the lower end of the valve seat 21 is arranged to abut the inner bottom wall of the salt box 1. The slot 211 is passed through from top to bottom and the lower end abuts the inner bottom wall of the salt box 1. The insert 223 is arranged on the side of the sleeve 22, and its length is sufficient to extend downward to abut the inner bottom wall of the salt box 1. When the insert 223 is inserted into the slot 211, the outer wall of the insert 223 is arranged to fit the inner wall of the slot 211 to form a sealing structure to prevent the saturated salt water from being sucked into the gap between the insert 223 and the slot 211, thereby ensuring that the saturated salt water is sucked into the tube cavity 222 by the Venturi effect. In general, the insert 223 can be directly arranged to extend downward to abut the inner bottom wall of the salt box 1, so as to automatically absorb the saturated salt water by the Venturi effect. The matching arrangement of the insert tube 223 and the slot 211 of the present invention is conducive to improving the stability of the installation of the sleeve 22, thereby ensuring that the lower end of the insert tube 223 can stably abut against the inner bottom wall of the salt box 1 to ensure smooth absorption of saturated brine.

[0045] Based on this, a connecting portion 24 is provided at the connection between the sleeve 22 and the other end of the valve seat 21, and a corresponding sealing member 25 is provided in the valve seat 21 corresponding to the connecting portion 24. The sealing member 25 is connected to a guide rod 4. The guide rod 4 can move up and down to seal and pass through the upper cover 23 upward and is arranged on a fixed frame 6 to drive the sealing member 25 to move up and down to seal or open the connecting portion 24. The fixed frame 6 is fixed on the water pipe 3, and a floating member 5 is provided on the guide rod 4.

[0046] Due to the difference in water pressure in different waterways, the set water injection time may cause excessive water injection into the salt box 1 due to the difference in water pressure, and the electronic valve has not been closed in time, which not only causes a waste of water resources, but also has the risk of overflow in the salt box 1. The plugging member 25 cooperates with the structure of the floating member 5 to solve the problem. The floating member 5 can be a structure such as a buoy or a floating ball, which is located above the salt valve 2 in the salt box 1. Under normal circumstances, the plugging member 25, the floating member 5 and the guide rod 4 naturally fall to the inner bottom wall of the plugging member 25 against the valve seat 21 to open the connection part 24, thereby achieving the absorption of saturated salt water and normal water injection. When the water level in the salt box 1 reaches a certain height but the water injection passage of the electronic valve is not closed, the floating member 5 floats up due to buoyancy and uses the guide rod 4 to drive the plugging member 25 to move upward to the blocking connection part 24 to stop the water injection.

[0047] The water pipe 3 extends vertically into the salt box 1, and the fixing frame 6 includes a bracket 61 and a locking member 62. The bracket 61 is locked on the water pipe 3 by the locking member 62. The bracket 61 is provided with a hole for the guide rod 4 to pass through and move up and down. The hole diameter is larger than the outer diameter of the guide rod 4, so that the guide rod 4 can move up and down through the hole, thereby realizing the up and down movement of the guide rod 4, the floating member 5 and the blocking member 25. The bracket 61 is clamped on the water pipe 3 and locked and fixed by the locking member 62. The locking member 62 and the bracket 61 can be threadedly connected, so that the bracket 61 can be fixed on the water pipe 3 by screwing the locking member 62. It is worth noting that the force of screwing the locking member 62 should be properly controlled to avoid deformation of the water pipe 3.

[0048] The guide rod 4 can move up and down relative to the upper cover 23, that is, the guide rod 4 can move up and down relative to the upper cover 23 on the basis of passing through the upper cover 23 in a sealed manner to drive the blocking member 25 to open or block the connection portion 24. At this time, the upper cover 23 can be any structure, such as a hard cover, a soft cover, an elastic cover, etc., as long as it can achieve sealing with the guide rod 4 and the sleeve 22.

[0049] Alternatively, the upper cover 23 is an elastic structure, and a fixing ring 26 is pressed on the top circumferential edge of the upper cover 23, and the fixing ring 26 is fixedly connected to the upper end of the sleeve 22. When the upper cover 23 is an elastic structure, under normal circumstances, the plugging member 25, the floating member 5 and the guide rod 4 naturally fall to the inner bottom wall of the plugging member 25 against the valve seat 21 to open the connection part 24, and the upper cover 23 is in a natural state. When the water level in the salt box 1 reaches a certain height but the water injection passage of the electronic valve is not closed, the floating member 5 floats due to buoyancy and uses the guide rod 4 to drive the plugging member 25 to move upward to the plugging connection part 24 to stop the water injection. At this time, the upper cover 23 moves upward synchronously with the guide rod 4 and is stretched. When the water level in the salt box 1 drops, the elastic force of the upper cover 23 can assist the plugging member 25, the floating member 5 and the guide rod 4 to return to their positions. The setting of the fixing ring 26 can ensure the stable connection between the upper cover 23 and the sleeve 22 to prevent the upper cover 23 from being separated from the top of the sleeve 22 due to the upward movement of the guide rod 4, thereby ensuring the sealing of the sleeve 22.

[0050] On the basis of this structure, a float 27 is provided in the salt chamber 221. The float 27 is provided corresponding to the connection part 24. The float 27 can fall down to block the connection part 24 or float up to open the connection part 24. When the water injection and salt absorption operation are not performed, the float 27 falls down due to its own weight to block the connection part 24. When the water injection passage of the electronic valve is opened, the external water to be treated enters the valve seat 21 through the water pipe 3, and when it flows to the connection part 24, it flushes the float 27 to open the connection part 24, so that the water to be treated enters the salt chamber 221, and enters the salt box 1 through the tube cavity 222 to dissolve the soft water salt. When the salt absorption passage of the electronic valve is opened, negative pressure will be formed in the tube cavity 222 and the salt cavity 221, so that according to the Venturi effect, the small inner diameter structure of the tube cavity 222 is used to directly automatically absorb the saturated salt water in the salt box 1 into the tube cavity 222 and into the salt cavity 221. The buoyancy of the saturated salt water makes the float 27 float up to open the connection part 24, so that the saturated salt water enters the valve seat 21 through the connection part 24 and is transported to the soft water component through the water pipe 3 to regenerate the soft water resin, without the need for a power pump or the like to provide power. When the saturated salt water in the salt box 1 is almost absorbed, as the saturated salt water in the salt cavity 221 decreases, the buoyancy of the saturated salt water on the float 27 gradually decreases. Finally, after the saturated salt water in the salt box 1 is absorbed, the disappearance of the buoyancy causes the float 27 to fall due to its own weight to block the connection part 24, thereby preventing air from being sucked into the soft water component, thereby ensuring the safety of the electronic valve and the soft water component. The connection portion 24 can also support the float 27 to ensure the stable falling and blocking of the float 27 .

[0051] The float 27 is guided and positioned by the float tube 28. The float tube 28 is arranged in the salt cavity 221 and extends to the inner wall of the sealing connection part 24. The float 27 is arranged in the float tube 28 so as to fall down to block the lower end of the float tube 28 or float up to open the lower end of the float tube 28. The lower end of the float tube 28 is provided with a water hole 281 to connect with the connection part 24, and the upper end of the float tube 28 is provided with a through hole 282 to connect with the salt cavity 221. The plugging member 25 is arranged at the bottom of the float tube 28, and the guide rod 4 is connected to the plugging member 25 through the float tube 28. When water is injected or saturated salt water is absorbed, the float 27 will float up due to buoyancy. Due to the fluidity of the water to be treated and the saturated salt water, the position of the float 27 is easily offset. After the water injection is completed or the saturated salt water in the salt box 1 is absorbed, the disappearance of buoyancy will cause the float 27 to fall due to its own weight and the position will be offset, making it impossible to accurately block the connection part 24, because there is a possibility of air absorption during the salt absorption condition. The setting of the float tube 28 can guide and position the float 27, so as to ensure that the disappearance of buoyancy allows the float 27 to fall due to its own weight and accurately block the connection part 24 after the water injection is completed or the saturated salt water in the salt box 1 is absorbed.

[0052] The float tube 28 includes a cylindrical portion 283 with a through hole 282 and an inverted cone portion 284 with a water hole 281. The float 27 is arranged in the cylindrical portion 283. The top end of the inverted cone portion 284 is embedded in the bottom end of the cylindrical portion 283 to support the float 27. The top end of the inverted cone portion 284 is provided with a groove 285, and the groove 285 is arranged on the surrounding side of the float 27 in the falling state.

[0053] The cylindrical portion 283 is connected to the salt cavity 221 through the through hole 282, the lower part of the inverted cone 284 is inserted into the connecting portion 24, the outer wall of the inverted cone 284 is sealed and connected to the inner wall of the top end of the connecting portion 24, and the water hole 281 is opened on the side wall of the inverted cone 284 and is located in the connecting portion 24, so that the salt cavity 221 and the tube cavity 222 are connected to the valve seat 21 through the water hole 281 and the through hole 282 of the float cylinder 28. The float 27 can fall down to block the inverted cone 284 or float up to open the inverted cone 284 to block or connect the float cylinder 28 with the valve seat 21. In this way, when the water injection and salt absorption operation are not performed, the float 27 falls due to its own weight to block the inverted cone 284. When the water injection passage of the electronic valve is opened, the external water to be treated enters the valve seat 21 through the water pipe 3, and when it flows to the connecting portion 24, it flushes the float 27 through the water hole 281 to open the inverted cone 284, so that the water to be treated enters the salt cavity 221 through the through hole 282 of the cylindrical portion 283, and enters the salt box 1 through the tube cavity 222 to dissolve the soft water salt. When the salt absorption passage of the electronic valve is opened, negative pressure is formed in the tube cavity 222 and the salt cavity 221. Therefore, according to the Venturi effect, the small inner diameter structure of the tube cavity 222 is utilized to directly and automatically absorb the saturated salt water in the salt box 1 into the tube cavity 222, and enter the salt cavity 221, and enter the cylindrical portion 283 through the through hole 282. The buoyancy of the saturated salt water causes the float 27 to float up to open the inverted cone 284, so that the saturated salt water flows into the connecting portion 24 through the water hole 281 and enters the valve seat 21, so as to be transported to the soft water component through the water pipe 3 to regenerate the soft water resin, without the need for a power pump or the like to provide power. When the saturated salt water in the salt box 1 is almost completely absorbed, as the saturated salt water in the salt chamber 221 decreases, the buoyancy of the saturated salt water on the float 27 gradually decreases. Finally, after the saturated salt water in the salt box 1 is completely absorbed, the disappearance of the buoyancy causes the float 27 to fall due to its own weight to block the inverted cone 284. The sealing structure of the inverted cone 284 and the connecting part 24 prevents air from being sucked into the soft water component, thereby ensuring the safety of the electronic valve and the soft water component. Among them, the inverted cone 284 can also support the float 27 to ensure the stable falling and blocking of the float 27.

[0054] The groove 285 may be provided with one section, one circle, two circles or more. When saturated salt water is absorbed, after the saturated salt water enters the cylindrical portion 283 of the float tube 28 from the through hole 282, the saturated salt water flows downward to the groove 285 to form a vortex, which drives the float 27 to float up with a greater impact force, which is conducive to the rapid floating of the float 27 to ensure the rapid absorption of the saturated salt water into the soft water component.

[0055] Of course, the guide structure may also be an elastic structure such as a spring, as long as the accurate falling of the float 27 can be achieved.

[0056] In addition to the above structures, see Figure 2 The salt box 1 is provided with a salt valve chamber 11 and at least one salt box chamber 12. A salt box 13 is detachably provided in the salt box chamber 12. The salt valve 2 is arranged in the salt valve chamber 11 and connected to the salt box 13 in the salt box chamber 12 through a pipeline. The salt valve chamber 11 is used to accommodate the salt valve 2. One end of the water pipe 3 is placed outside the salt box 1 to connect the soft water component and the water inlet pipe through a double-channel electronic valve. The other end of the water pipe 3 extends downward to the salt box 1 and is plugged into one end of the valve seat 21 of the salt valve 2. The salt box chamber 12 is used to accommodate the salt box 13. The salt valve chamber 11 is connected to the salt box 13 in the salt box chamber 12 through a pipeline, so as to achieve the level of the saturated salt water level in the salt valve chamber 11 and the salt box 13 and the water injection level. And when injecting water, the uniform distribution of the saturated salt water in the salt valve chamber 11 and the salt box chamber 12 can be achieved through the fluidity of water. When saturated brine is absorbed, the saturated brine in the salt valve chamber 11 is first sucked into the tube chamber 222 due to the Venturi effect. As the water level in the salt valve chamber 11 drops, the saturated brine in the salt box 13 is continuously replenished into the salt valve chamber 11 through the pipeline to ensure that the water levels in the salt valve chamber 11 and the salt box 13 are level until the saturated brine in the salt box 1 is completely absorbed.

[0057] The salt box 13 is detachably mounted in the salt box chamber 12, so that when the soft water salt in the salt box 13 is insufficient, the soft water salt can be replenished by removing the salt box 13. The salt box chamber 12 can be provided with one, or two or more, and can be provided according to the requirements of weight, soft water salt usage, etc.

[0058] The present invention also provides a soft water water heater, comprising a water heater body 8 and the above-mentioned salt box control mechanism, the salt box control mechanism is detachably arranged at the bottom of the water heater body 8, the water heater body 8 comprises a hot water component and a soft water component, the soft water component is connected to the water inlet pipe, and the salt valve 2 is connected to the soft water component via the salt absorption pipe.

[0059] When the water injection pipe and the salt absorption pipe are both water pipes 3, one end of the water pipe 3 is placed in the water heater body 8 to connect the soft water component and the water inlet pipe respectively through the double-channel electronic valve, and the other end of the water pipe 3 extends into the salt valve chamber 11 to connect the salt valve 2, and the water inlet pipe can also be directly connected to the soft water component. In this way, under normal conditions of the soft water resin, the external water to be treated directly enters the soft water component through the water inlet pipe to generate soft water for heating the hot water component. When the adsorption capacity of the soft water resin decreases and needs to be regenerated, the water injection passage of the electronic valve is opened, and the external water to be treated enters the valve seat 21 through the water pipe 3. When it flows to the connection part 24, it flushes the float 27 through the water hole 281 to open the inverted cone 284, so that the water to be treated enters the salt chamber 221 through the through hole 282 of the cylindrical part 283, and enters the salt box 1 through the tube cavity 222 to dissolve the soft water salt until the required amount of saturated brine is obtained, and the water injection is closed. Then, the salt absorption passage of the electronic valve is opened, and negative pressure is formed in the tube cavity 222 and the salt cavity 221. Therefore, according to the Venturi effect, the small inner diameter structure of the tube cavity 222 is used to directly automatically absorb the saturated salt water in the salt box 1 into the tube cavity 222, and enter the salt cavity 221, and enter the cylindrical part 283 through the through hole 282. The buoyancy of the saturated salt water makes the float 27 float up to open the inverted cone 284, so that the saturated salt water flows into the connecting part 24 through the water hole 281 and enters the valve seat 21, and is transported to the soft water component through the water pipe 3 to regenerate the soft water resin. When the saturated salt water in the salt box 1 is almost absorbed, as the saturated salt water in the salt cavity 221 decreases, the buoyancy of the saturated salt water on the float 27 gradually decreases. Finally, after the saturated salt water in the salt box 1 is absorbed, the disappearance of the buoyancy causes the float 27 to fall due to its own weight to block the inverted cone 284, and cooperate with the sealing structure of the inverted cone 284 and the connecting part 24 to prevent air from being sucked into the soft water component. In addition, a saturated brine detector may be further provided in the salt box 1 to promptly feed back to the control device after the saturated brine in the salt box 1 is completely absorbed, thereby controlling the closing of the salt absorption passage of the electronic valve.

[0060] Since one end of the water pipe 3 is arranged in the water heater body 8, a protective cover 9 is provided at one end of the water pipe 3, and the end of the water pipe 3 passes through the protective cover 9 to connect the soft water component to avoid damage during installation.

[0061] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A salt box control mechanism, characterized in that: include: a salt box containing water softening salt; A water injection pipe, one end of which is connected to the water to be treated through a water inlet pipe, and the other end of which extends into the salt box, and a stop valve is provided on the water injection pipe; A salt valve, the salt valve is arranged in the salt box, the salt valve is connected to a salt absorption pipe to output saturated brine, and the salt absorption pipe is provided with a valve; The salt valve has a large inner diameter salt cavity and a small inner diameter tube cavity inside. One end of the salt cavity is connected to the salt absorption tube, and the other end of the salt cavity is connected to the tube cavity. The tube cavity is arranged on one side of the salt cavity and extends downward to abut against the inner bottom wall of the salt box.

2. The salt box control mechanism according to claim 1, characterized in that: The water injection pipe and the salt absorption pipe are the same water pipe, the stop valve and the valve are the same electronic valve, and the electronic valve is provided with a double-channel structure for water injection and salt absorption respectively.

3. The salt box control mechanism according to claim 2, characterized in that: The salt valve comprises a valve seat, a sleeve and an upper cover, one end of the valve seat is connected to the water pipe, the sleeve is sleeved on the other end of the valve seat and its upper end is covered with the upper cover to form the salt cavity in the sleeve, and the tube cavity is arranged on the side of the sleeve and connected to the salt cavity in the sleeve.

4. The salt box control mechanism according to claim 3, characterized in that: The side of the other end of the valve seat is provided with a slot that passes through from top to bottom, and the side of the sleeve is provided with a matching insert corresponding to the slot, the upper end of the insert is connected to the salt cavity, and the lower end of the insert is inserted in the slot and extends to abut the inner bottom wall of the salt box to form the tube cavity in the insert.

5. The salt box control mechanism according to claim 3, characterized in that: A connecting part is provided at the connection between the sleeve and the other end of the valve seat, and a matching sealing part is provided in the valve seat corresponding to the connecting part. The sealing part is connected to a guide rod, and the guide rod can be moved up and down to seal and pass through the upper cover upward and is arranged on a fixed frame to drive the sealing part to move up and down to seal or open the connecting part. The fixed frame is fixed on the water pipe, and a floating part is provided on the guide rod.

6. The salt box control mechanism according to claim 5, characterized in that: The guide rod can move up and down relative to the upper cover; Alternatively, the upper cover is an elastic structure, a fixing ring is pressed on the circumferential edge of the top end of the upper cover, and the fixing ring is fixedly connected to the upper end of the sleeve.

7. The salt box control mechanism according to claim 5, characterized in that: A floating ball is arranged in the salt chamber, and the floating ball is arranged corresponding to the connecting portion. The floating ball can fall down to block the connecting portion or float up to open the connecting portion.

8. The salt box control mechanism according to claim 7, characterized in that: The float is guided and positioned by a float tube, the float tube is arranged in the salt cavity and extends to the inner wall of the connection part which is sealed and connected, the float is arranged in the float tube so as to be able to fall down to block the lower end of the float tube or float up to open the lower end of the float tube, the lower end of the float tube is provided with a water hole to connect with the connection part, and the upper end of the float tube is provided with a through hole to connect with the salt cavity; The blocking piece is arranged at the bottom of the float tube, and the guide rod is connected to the blocking piece via the float tube.

9. The salt box control mechanism according to claim 8, characterized in that: The float tube includes a cylindrical portion with a through hole and an inverted cone portion with a water hole. The float is arranged in the cylindrical portion. The top end of the inverted cone portion is embedded in the bottom end of the cylindrical portion to support the float. The top end of the inverted cone portion is provided with a groove, and the groove is arranged on the surrounding side of the float in a falling state.

10. A soft water water heater, characterized in that: include: A water heater body and a salt box control mechanism as described in any one of claims 1 to 9, wherein the salt box control mechanism is detachably arranged at the bottom of the water heater body, the water heater body comprises a hot water component and a soft water component, the soft water component is connected to the water inlet pipe, and the salt valve is connected to the soft water component via the salt absorption pipe.

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