Backflow prevention floor drain and water softener

Abstract

The utility model relates to an anti-backflow floor drain. The anti-backflow floor drain comprises a main body (10), the top of the main body (10) is provided with a first connector (22) and a second connector (24), the first connector (22) comprises a first water inlet (222) and a first water outlet (224), and the second connector (24) comprises a second water inlet (242) and a second water outlet (244); and the backflow prevention structure (26) is fixedly arranged at the top of the main body (10), is positioned between the first water outlet (224) and the second water outlet (244), and is used for preventing outlet water of the first interface (22) or the second interface (24) from flowing back to the other interface. According to the anti-backflow floor drain disclosed by the utility model, the anti-backflow structure is arranged between the water outlet of the overflow interface and the water outlet of the drainage interface, so that water discharged from the drainage interface cannot flow back to the overflow interface due to negative pressure when the water softener is regenerated, and the water softener cannot be polluted by the water discharged from the overflow interface.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field especially is related to a prevent backflow floor drain and water softener. BACKGROUND

[0002] Water softener has been more and more widely used as daily household appliance because it can effectively remove calcium ions and magnesium ions in water to soften water quality and improve water quality. The basic functions of water softener generally include water purification, backwashing, smoke regeneration, positive washing and water injection, and the sewage generated during the use of part of the functions is discharged into the sewer pipe through the sewage pipe; in addition, the water softener generally also includes overflow pipeline, and the overflow liquid is discharged into the sewer pipe through the overflow pipeline.

[0003] In the prior art, the sewage pipe is communicated with the sewer pipe, the overflow pipeline is connected to the sewage pipe, and a control valve is arranged in the overflow pipeline to control whether the overflow pipeline is communicated with the sewage pipe. When communicated, the liquid in the overflow pipeline can be discharged into the sewer pipe through the sewage pipe. However, if the control valve fails or is blocked, the overflow liquid may not be normally discharged, the liquid may leak from the control valve due to poor sealing, and even the sewage in the sewage pipe may flow back to the water softener through the overflow pipeline, thereby affecting the normal operation of the water softener. UTILITY MODEL CONTENT

[0004] Therefore, one of the purposes of the utility model is to provide a backflow prevention floor drain. By arranging a backflow prevention structure between the overflow interface outlet and the drainage interface outlet, the water outlet of the drainage interface during the regeneration of the water softener will not flow back to the overflow interface due to negative pressure, thereby entering the water softener and polluting the water softener.

[0005] Another purpose of the utility model is to provide a water softener. By arranging a backflow prevention floor drain, the water outlet of the drainage port is prevented from being sucked into the machine from the overflow port due to negative pressure during the regeneration of the water softener.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A backflow prevention floor drain comprises:

[0008] A main body 10 is provided with a first interface 22 and a second interface 24 on the top thereof, the first interface 22 comprises a first water inlet 222 and a first water outlet 224, and the second interface 24 comprises a second water inlet 242 and a second water outlet 244;

[0009] A backflow prevention structure 26 is fixedly arranged on the top of the main body 10 and located between the first water outlet 224 and the second water outlet 244, and is used for preventing the water outlet of the first interface 22 or the second interface 24 from flowing back to the other interface.

[0010] Further, the bottom of the main body 10 is provided with a water outlet 30, and a retention cavity 40 is formed between the top and the bottom. The first water inlet 222 is used to connect the overflow pipeline of the water softener, the first water outlet 224 is used to communicate with the retention cavity 40, the second water inlet 242 is used to connect the drain pipeline of the water softener, and the second water outlet 244 is used to communicate with the retention cavity 40.

[0011] Further, the anti-backflow structure 26 includes a partition plate 262, which is fixedly arranged on the inner surface of the top of the main body 10 towards the retention cavity 40 and located between the first water outlet 224 and the second water outlet 244. The partition plate 262 is provided with a protrusion 264, and / or a cone 266 is fixedly arranged on the side of the partition plate 262 away from the first water outlet 224 and the second water outlet 244, and the bottom surface of the cone 266 is fixedly arranged on the partition plate 262.

[0012] Further, the partition plate 262 is arranged on the connecting line of the center of the first water outlet 224 and the center of the second water outlet 244, and the side close to the first water outlet 224 and / or the side close to the second water outlet 244 is inclined from the top to the bottom of the main body 10.

[0013] Further, the length direction of the partition plate 262 is perpendicular to the connecting line of the center of the first water outlet 224 and the center of the second water outlet 244; or the partition plate 262 includes a first arc-shaped plate 262a and a second arc-shaped plate 262b, the first arc-shaped plate 262a protrudes towards the side away from the first water outlet 224, and the second arc-shaped plate 262b is fixedly connected with the first arc-shaped plate 262a and protrudes towards the side away from the second water outlet 244.

[0014] Further, at least one hollow hole is arranged on the side wall of the main body 10, and the hollow hole communicates with the retention cavity 40.

[0015] Further, the second water outlet 244 protrudes from the inner surface of the top of the main body 10, and / or the main body 10 is fixedly provided with a plurality of guide plates 246, which are arranged around the second water outlet 244 at intervals.

[0016] Further, the first interface 22 is internally provided with a flow blocking structure 226; the flow blocking structure 226 comprises a plurality of staggered baffles 226b, or the flow blocking structure 226 comprises an annular protruding portion 226a, a baffle 226b located on one side of the annular protruding portion 226a towards the first water outlet 224 and forming a channel with the inner wall of the first interface 22, and a floating ball 226c arranged between the annular protruding portion 226a and the baffle 226b, wherein the diameter of the floating ball 226c is greater than the inner diameter of the annular protruding portion 226a and the width of the channel.

[0017] Further, the outer surface of the first interface 22 and / or the second interface 24 is formed with an anti-skid structure.

[0018] In another aspect, the utility model also provides a water softener comprising the above anti-backflow floor drain.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] (1) By arranging the hollow part on the side wall of the main body, the anti-backflow floor drain has the same air pressure as the sewer pipeline, effectively preventing the sewage from being sucked back due to the negative pressure formed in the floor drain;

[0021] (2) By arranging the anti-backflow structure between the first water outlet and the second water outlet, the water outlet of the anti-backflow structure is prevented from being adhered to form backflow, and the water outlet of the drain outlet is prevented from being sucked into the machine from the overflow outlet due to the negative pressure when the water softener is regenerated;

[0022] (3) By arranging the partition plate, the water outlets of the first interface and the second interface are isolated, the water outlets of the two interfaces are prevented from directly mixing and contacting, and the water flow is prevented from flowing back to the water softener through the other interface;

[0023] (4) By arranging the protrusion in the middle of the partition plate, the water outlets of the two interfaces are guided to flow along the surface of the protrusion, and the intersection and interference between the water flows are reduced;

[0024] (5) By arranging the cone with the pointed end towards the water outlet, the flow direction of the water outlets of the two interfaces is changed, when the water flow passes through the cone, the water flow is guided to generate vortex effect due to the shape of the cone, which helps to disperse the water flow, prevents the water flow from impacting the water flow of the other interface, when the water outlet of the interface attempts to flow back to the water softener through the other interface, the flow direction of the water outlet is changed by the guidance of the protrusion and the cone, so that the water outlet cannot directly enter the other interface, in addition, the pointed end of the cone helps to destroy the possible siphon effect, preventing the water in the drain pipeline from flowing back to the water softener due to the negative pressure;

[0025] (6) By arranging the anti-skid structure and the fastener, the first interface and the overflow pipeline, and the second interface and the drain pipeline are prevented from being separated;

[0026] (7) By setting a flow-blocking structure inside the first interface, the liquid in the retention chamber is further prevented from flowing back from the first interface;

[0027] (8) By setting a guide plate at the second outlet, the water from the second outlet is guided and dispersed, further reducing the backflow caused by the water from the two interfaces sticking together.

[0028] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an anti-backflow floor drain provided in an embodiment of this application;

[0030] Figure 2 for Figure 1 A front view of the anti-backflow floor drain;

[0031] Figure 3 for Figure 1 A schematic diagram of the anti-backflow structure;

[0032] Figure 4 A bottom view of an anti-backflow floor drain provided in one embodiment of this application;

[0033] Figure 5 A bottom view of an anti-backflow floor drain provided in one embodiment of this application;

[0034] Figure 6 This is a schematic diagram of the structure of an anti-backflow floor drain provided in one embodiment of this application;

[0035] Figure 7 for Figure 1 A top view of the anti-backflow floor drain;

[0036] Figure 8 A bottom view of a deflector provided in one embodiment of this application;

[0037] Figure 9 This is a schematic diagram of the flow-blocking structure provided in one embodiment of this application;

[0038] Figure 10 This is a partial structural diagram of the water softener provided in this application;

[0039] In the figure: 10 - main body; 12 - mounting structure; 122 - gap; 20 - joint part; 22 - first interface; 222 - first water inlet; 224 - first water outlet; 226 - resistance structure; 226a - annular protruding part; 226b - baffle; 226c - floating ball; 24 - second interface; 242 - second water inlet; 244 - second water outlet; 246 - guide plate; 26 - anti-backflow structure; 262 - partition plate; 262a - first arc-shaped plate; 262b - second arc-shaped plate; 264 - protrusion; 266 - cone; 30 - water outlet part; 40 - retention cavity; 42 - hollow part; 52 - overflow pipeline; 54 - drainage pipeline; 60 - sewer pipe. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be noted that the terms "upper", "bottom", "top", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise specified and limited, the terms "provided", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected, it can be mechanically connected, or electrically connected, it can be directly connected, or connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "provided", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected, it can be mechanically connected, or electrically connected, it can be directly connected, or connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Water softener has been widely used as a daily household appliance because it can effectively remove calcium ions and magnesium ions in water to soften and improve water quality. The basic functions of a water softener generally include water purification, backwashing, smoke regeneration, forward washing, water injection, etc. The sewage generated during the use of some functions is discharged into the sewer pipe through the sewage pipe. In addition, the water softener generally also includes an overflow pipe, and the overflow liquid is discharged into the sewer pipe through the overflow pipe. In the prior art, the sewage pipe is connected to the sewer pipe, the overflow pipe is connected to the sewage pipe, and a control valve is arranged in the overflow pipe to control whether the overflow pipe is connected to the sewage pipe. When connected, the liquid in the overflow pipe can be discharged into the sewer pipe through the sewage pipe. However, if the control valve fails or is blocked, it may cause the overflow liquid to be unable to be normally discharged, may cause the liquid to leak from the control valve due to poor sealing, and may even cause the sewage in the sewage pipe to flow back to the water softener through the overflow pipe, thereby affecting the normal operation of the water softener.

[0044] Based on this, the utility model provides a kind of anti-reflux floor drain connector, by being provided with anti-reflux structure between overflow interface outlet and drainage interface outlet, it is realized that the water of drainage interface outlet is not backflowed to overflow interface due to negative pressure when water softener is regenerated, to enter water softener, pollute water softener.

[0045] Please refer to Figure 1 The embodiment of the application provides an anti-reflux floor drain, which comprises a main body 10, a joint portion 20 is arranged at the top of the main body 10, the joint portion 20 comprises a first interface 22, a second interface 24 and an anti-reflux structure 26, the first interface 22 comprises a first water inlet 222 and a first water outlet 224, the second interface 24 comprises a second water inlet 242 and a second water outlet 244, and the anti-reflux structure 26 is located between the first water outlet 224 of the first interface 22 and the second water outlet 244 of the second interface 24, and is used to prevent the water outlet of the first interface 22 and / or the second interface 24 from backflowing to the other interface.

[0046] Compared with the prior art, in the embodiment, the joint portion 20 is used to connect the overflow pipe and the drainage pipe of the water softener, the water outlet portion 30 is used to communicate with the sewer pipe, and the water discharged from the water softener flows into the retention cavity 40 through the first interface 22 and / or the second interface 24 of the joint portion 20, and then flows into the sewer pipe through the water outlet portion 30. In this process, the anti-reflux structure 26 prevents the water outlet of the first interface 22 and / or the second interface 24 from backflowing to the other interface, and then backflowing into the water softener, so as to effectively protect the water softener.

[0047] Please refer to Figures 1-3In some embodiments, the bottom of the main body 10 is provided with a water outlet 30, and a retention cavity 40 is formed between the joint portion 20 and the water outlet 30. The first water inlet 222 is configured to connect to the overflow pipe of the water softener, and the first water outlet 224 is configured to communicate with the retention cavity 40. The second water inlet 242 is configured to connect to the drain pipe of the water softener, and the second water outlet 244 is configured to communicate with the retention cavity 40.

[0048] In some embodiments, the distance between the first water outlet 224 and the second water outlet 244 is less than the distance between the first water inlet 222 and the second water inlet 242, so as to facilitate the connection of the first interface 22 and the second interface 24 to the overflow pipe and the drain pipe, respectively, and to reduce the interference between the overflow pipe and the drain pipe. Specifically, the first interface 22 and the second interface 24 are arranged obliquely relative to the main body 10, or the first interface 22 and the second interface 24 are each provided with a bent segment such that the first water inlet 222 is distanced from the second water inlet 242.

[0049] In some embodiments, the first water inlet 222 of the first interface 22 and the second water inlet 242 of the second interface 24 are located outside the main body 10, and the first water inlet 222 and the second water inlet 242 protrude from the top of the main body 10 and are distanced from the outer surface of the retention cavity 40. The first water outlet 224 of the first interface 22 and the second water outlet 244 of the second interface 24 are located inside the main body 10, and the first water outlet 224 and the second water outlet 244 are flush with the inner surface of the top of the main body 10 and face the retention cavity 40.

[0050] Further, the anti-backflow structure 26 includes a partition plate 262 located between the first water outlet 224 and the second water outlet 244. The top surface of the partition plate 262 is fixed to the inner side of the top of the main body 10, i.e., the partition plate 262 is located inside the retention cavity 40, and is configured to block the direct contact between the water outlet of the first interface 22 and the water outlet of the second interface 24.

[0051] In some embodiments, the partition 262 is a solid partition, and the length direction of the partition 262 is parallel to the connecting line of the centers of the first water outlet 224 and the second water outlet 244, or the partition 262 is located on the connecting line. The partition 262 is provided with a protrusion 264 extending from one end of the partition 262 close to the water outlet to the other end of the partition 262 away from the water outlet. Specifically, the partition 262 has a length direction and a width direction, and in some embodiments, the width direction of the partition 262 is perpendicular to the inner surface of the top of the main body 30, the length direction is parallel to the inner surface of the top of the main body 30, one end of the protrusion 264 is fixed to the inner surface of the top of the main body 10, and the other end extends along the width direction of the partition 262 to the other end of the partition 262 away from the water outlet. Preferably, the protrusion 264 is provided with two protrusions respectively located on the two sides of the partition 262. The cross-sectional shape of the protrusion 264 is preferably arc-shaped, which is used to guide the water flow of the first interface 22 and the second interface 24, guide the water flow along the surface thereof, and reduce the intersection and interference between the water flows. More preferably, the centers of the protrusions 264 on the two sides of the partition 262 coincide, and the radii are equal to form a cylinder, the height of the cylinder is greater than or equal to the height of the partition 262, and the cylinder is located in the middle of the partition 262.

[0052] Further, a cone 266 is fixed to the top end of the cylinder, the bottom surface of the cone 266 is fixed to the top end of the cylinder, and the conical surface of the cone 266 prevents the water flow from directly impacting the water flow on the other side of the partition, thereby reducing the possibility of adhesion. At the same time, the tip of the cone 266 helps to destroy the possible siphon effect, preventing the water in the drainage pipeline from flowing back into the water softener due to negative pressure. Preferably, the cone 266 is a circular cone. More preferably, the diameter of the circular cone is equal to the diameter of the cylinder, and the axis coincides.

[0053] Further, in some embodiments, the two side surfaces of the partition 262 in the width direction, i.e., the side surface close to the first water outlet 224 and the side surface close to the second water outlet 244, are respectively inclined in the direction from the top of the main body 10 to the bottom to form two inclined surfaces, so that the length of the partition 262 gradually decreases from the top of the main body 10 to the bottom of the main body 10, i.e., the shape of the partition 262 is approximately trapezoidal. Preferably, the inclined surface of the partition 262 is approximately parallel to the adjacent water outlet. More preferably, the length of the top surface of the partition 262 is equal to the distance between the two water outlets, and the inclined surface extends from the adjacent water outlet to the water outlet portion 30 approximately in parallel, thereby guiding the water flow of the adjacent water outlet.

[0054] In some embodiments, the side surfaces of the partition 262 close to the first water outlet and the second water outlet are concave arc surfaces, which are used to guide the water flow of the adjacent water outlet to flow towards the outside and / or the water outlet portion 30, thereby reducing the direct contact between the two sides of the water outlet.

[0055] Referring to Figure 4In some embodiments, the length direction of the partition 262 is perpendicular to the connecting line of the center of the first water outlet 224 and the center of the second water outlet 244. The bottom surface of the partition 262 is provided with at least one cone 266, the bottom surface of the cone 266 is fixed to the partition 262, the tip is directed to the water outlet 30, and the cone 266 is used to guide the water flow on both sides of the partition and destroy the possible siphon effect, so as to prevent the water in the drain line from flowing back to the water softener due to negative pressure. Preferably, the cone 266 is a circular cone, and the circular cone is located at the intersection of the partition 262 and the connecting line.

[0056] Further, in some embodiments, the partition 262 is provided with a plurality of through holes, so that the water outlets on both sides of the partition 262 are fully dispersed and mixed when passing through the through holes, thereby reducing the risk of mutual adhesion. Preferably, the cross section of the through hole is hexagonal, and a plurality of through holes form a honeycomb structure to increase the area of the cross section of the through hole.

[0057] Referring to Figure 5 In some embodiments, the partition 262 is arranged at the intermediate position of the first water outlet 224 and the second water outlet 244, the partition 262 includes a first arc-shaped plate 262a and a second arc-shaped plate 262b, the first arc-shaped plate 262a protrudes towards the side away from the first water outlet, the second arc-shaped plate 262b protrudes towards the side away from the second water outlet, the first arc-shaped plate 262a and the second arc-shaped plate 262b are fixedly connected to form the partition 262, and the partition 262 is used to guide the water outlets of the first water outlet 224 and the second water outlet 244, thereby reducing the adhesion of the water outlets of the two water outlets. Preferably, the radius of the first arc-shaped plate 262a is greater than the radius of the first water outlet 224, and the radius of the second arc-shaped plate 262b is greater than the radius of the second water outlet 244. More preferably, the center of the first arc-shaped plate 262a coincides with the first water outlet 224, and the center of the second arc-shaped plate 262b coincides with the second water outlet 244.

[0058] In some embodiments, the angle between the partition 262 and the connecting line is 30°-150°, the number of the partition 262 is at least two, and the at least two partitions 262 are arranged alternately. Preferably, a plurality of partitions 262 are arranged in parallel, and the overall length of the plurality of partitions 262 is greater than the diameter of the first water outlet 224 and the second water outlet 244.

[0059] Further, in some embodiments, the first water outlet 224 and the second water outlet 244 are symmetrically arranged at the top of the main body 10, and the diameter of the first water outlet 224 and the diameter of the second water outlet 244 are equal. In other embodiments, the diameter of the second water outlet 244 is greater than the diameter of the first water outlet 224, and the second water outlet 244 is arranged near the middle of the top of the main body 10, and the first water outlet 224 is arranged near the periphery of the top of the main body.

[0060] Referring to Figure 6Further, in some embodiments, the first water outlet 224 of the first interface 22 is flush with the inner surface of the top of the main body 10, and the second water outlet 244 of the second interface 24 protrudes from the inner surface of the top of the main body 10.

[0061] In some embodiments, the partition 262 is parallel to or located on the connecting line of the centers of the first water outlet 224 and the second water outlet 244, the top surface of the partition 262 is fixed to the side of the top of the main body 10 facing the water outlet 30, and the side of the partition 262 facing the second water outlet 244 is fixed to the second interface 24. Preferably, the partition 262 protrudes from the second water outlet 244.

[0062] Further, the bottom surface of the partition 262 is provided with a column and / or a cone 266 for guiding the water flow of the first interface 22 and the second interface 24.

[0063] In some embodiments, the retention cavity 40 includes a hollow portion 42 that facilitates air circulation and smooth drainage. The projection of the anti-backflow structure 26 on a vertical plane at least partially overlaps the hollow portion 42, and preferably the projection of the partition 262 on a vertical plane at least partially overlaps the hollow portion 42.

[0064] Referring to Figures 6-7 The sidewall of the main body 10 is provided with at least one hollow hole to form the hollow portion 42, and the hollow hole is in communication with the retention cavity 40. Preferably, the hollow hole is provided in at least three, and the hollow hole is rectangular or / and wavy. The periphery of the main body 10 is provided with a mounting structure 12 for connecting with the inner wall of the sewer pipe, so as to install the anti-backflow floor drain into the sewer pipe. The mounting structure is provided with a gap, so that the sewer pipe can communicate with the outside through the gap 122. The gap, the through hole and the third water outlet make the floor drain and the sewer pipe have the same air pressure, effectively preventing the sewage from being sucked back due to the negative pressure formed in the floor drain. When the anti-backflow floor drain is integrally formed, the area of the through hole of the main body should be as large as possible to facilitate the cleaning of the inside of the anti-backflow floor drain.

[0065] Referring to Figure 8 In some embodiments, the side of the second water outlet 244 facing the water outlet 30 is provided with a plurality of flow guides 246, which are arranged along the outer periphery of the second water outlet 244 at intervals, and the flow guides 246 divide the water flow of the second water outlet 244, thereby reducing the adhesion between the water flows by reducing the direct contact between the water flows.

[0066] In some embodiments, the cross section of the flow guide 246 perpendicular to the water outlet direction of the anti-backflow floor drain is arc-shaped, and the arc-shaped surface extends from the periphery of the second water outlet 244 or inside the second water outlet 244 to the direction away from the second water outlet 244, so that the water flow is divided along the flow guide 246, and the rotation and shearing action are generated when the water flow passes through, thereby breaking the adhesion between the water flows.

[0067] Referring to Figure 9 Further, in some embodiments, the first interface 22 is provided with a flow blocking structure 226 for blocking the liquid in the storage cavity from entering the first interface 22.

[0068] In some embodiments, the first interface 22 is internally provided with an annular protruding portion 226a and a baffle 226b, the baffle 226b is located on the side of the annular protruding portion 226a facing the first water outlet 224, a floating ball 226c is provided between the annular protruding portion 226a and the baffle 226b, the diameter of the floating ball 226c is smaller than the inner diameter of the first interface 22 and larger than the inner diameter of the annular protruding portion 226a, and the density of the floating ball 226c is smaller than the density of the water drained by the water softener; the annular protruding portion 226a forms a channel one inside, and the baffle 226b and the inner wall of the first interface 22 form a channel two, the overflow liquid is discharged along the channel one and the channel two, the diameter of the channel one and the width of the channel two are smaller than the diameter of the floating ball 226c, so as to avoid the floating ball 226c from falling off the channel. When water flows through the drain pipeline to the storage cavity 40, a small part of the liquid may enter the first interface 22 through the first water outlet 224, at this time, the floating ball 226c floats up due to its small density, thereby blocking the channel one of the annular protruding portion 226a and sealing the first interface 22, preventing the liquid in the drain pipeline from flowing into the water softener through the overflow pipeline.

[0069] In some embodiments, the flow blocking structure 226 includes a plurality of baffles 226b arranged in the first interface 22, which can effectively block the backflow of sewage without affecting the discharge of overflow liquid, and has low cost and good effect.

[0070] In some embodiments, the outer surface of the first interface 22 and the second interface 24 is formed with an anti-skid structure. Understandably, in order to prevent the first interface 22 and the overflow pipeline, and the second interface 24 and the drain pipeline from being pulled apart, an anti-skid structure can be provided on the connecting surface of the first interface 22 and the first interface 22 and the overflow pipeline and the drain pipeline to increase the friction; in general, the commonly used anti-skid structures can be applied to the present embodiment, such as forming protrusions on the surface, forming barbed edges along the circumference of the surface, etc. Further, fasteners such as clamps are provided on the outside of the overflow pipeline and the drain pipeline to strengthen the connection of the first interface and the overflow pipeline, and the connection of the second interface and the drain pipeline, so as to prevent the overflow pipeline or the drain pipeline from being pulled apart, causing liquid to spill, and affecting the user's experience.

[0071] In some embodiments, the floor drain is integrally formed, which is convenient for users to use directly.

[0072] Referring to Figure 10The utility model also provides a kind of soft water machine, soft water machine includes body, overflow pipeline 52, drain pipeline 54 and above-mentioned anti-backflow floor drain;Body is equipped with overflow port and drain port, overflow pipeline 52 one end is connected with overflow port, other end is connected with the first interface of anti-backflow floor drain;Drain pipeline 54 one end is connected with drain port, other end is connected with the second interface of anti-backflow floor drain, anti-backflow floor drain is installed in sewer pipe 60, and its water outlet part 30 is communicated with sewer pipe 60, liquid in overflow pipeline 52, drain pipeline 54 is discharged into sewer pipe 60.

[0073] Body is also equipped with treatment tank and salt tank, treatment tank can be accommodated with resin for ion exchange and substance for improving water quality, and high-concentration concentrated brine is formed in salt tank.When hard water contacts resin, potassium ion and sodium ion in resin replace calcium ion and magnesium ion in hard water, thereby improving water quality.Treatment tank uses a period of time, and the concentration of sodium ion and potassium ion in resin is low, and the regeneration process of resin is needed.At this time, concentrated brine in salt tank is input into treatment tank, and sodium ion and potassium ion in treatment tank are replenished, and waste water containing calcium ion and magnesium ion after reaction is discharged to sewer pipe through drain port, drain pipeline and anti-backflow floor drain.After concentrated brine in salt tank is input into treatment tank, water is replenished in salt tank, and water and salt in salt tank are re-formed into concentrated brine, and when water injected into salt tank is excessive, excessive water is discharged to sewer pipe through overflow port, overflow pipeline and anti-backflow floor drain.Backwashing is needed before regeneration of resin, and forward flushing is needed after regeneration of resin, and waste water generated during backwashing and forward flushing is discharged to sewer pipe through drain port, drain pipeline and anti-backflow floor drain.

[0074] The anti-backflow floor drain in the embodiment can have the same structure and achieve the same effect as the anti-backflow floor drain in the above embodiment, and the embodiment will not be described again.

[0075] The working principle of the anti-backflow floor drain of the utility model is as follows:

[0076] The first interface of the anti-backflow floor drain is connected with the overflow pipeline of the soft water machine, the second interface is connected with the drain pipeline of the soft water machine, when water in the salt tank of the soft water machine is excessive, the excessive water enters the retention cavity through the overflow pipeline, the first water inlet and the first water outlet, and then is discharged to the sewer pipe through the water outlet part;When waste water in the soft water machine needs to be discharged, the waste water enters the retention cavity through the drain pipeline, the second water inlet and the second water outlet, and then is discharged to the sewer pipe through the water outlet part;When the first water outlet and the second water outlet simultaneously have liquid discharge, the anti-backflow structure separates and guides the liquid of the first water outlet and the second water outlet, reduces the direct contact and mixing of water flow on both sides of the anti-backflow structure, thereby reducing the adhesion of water flow on both sides, and further reducing the backflow of water flow to the soft water machine.

[0077] Compared with the prior art, the utility model technical scheme has the beneficial effects as follows:

[0078] (1) By setting the hollow part in the side wall of the main body, the backflow prevention floor drain is the same as the sewer gas pressure, effectively preventing the sewage from being sucked back due to the negative pressure formed in the floor drain;

[0079] (2) By setting the backflow prevention structure between the first water outlet and the second water outlet, the water outlet of the case is prevented from being adhered to form backflow, and the water outlet of the drain is sucked into the machine from the overflow water outlet due to negative pressure during regeneration of the water softener;

[0080] (3) By setting the partition, the water outlet areas of the first interface and the second interface are isolated, direct mixing and contact of the water outlets of the two interfaces are avoided, and water flow is hindered from flowing back to the water softener through the other interface;

[0081] (4) By setting the protrusion in the middle of the partition, the water outlets of the two interfaces are guided to flow along the surface thereof, and the intersection and interference between the water flows are reduced;

[0082] (5) By setting the cone with a pointed end facing the water outlet part, the flow direction of the water outlets of the two interfaces is changed, when the water flow passes through the cone, the water flow will be guided to generate vortex effect by the shape of the cone, which helps to disperse the water flow, prevent the water flow from impacting the water flow of the other interface, when the water outlet of the interface attempts to flow back to the water softener through the other interface, the flow direction will be changed by the guidance of the protrusion and the cone, so that it cannot directly enter the other interface, in addition, the pointed end of the cone helps to destroy the possible siphon effect, preventing the water in the drain line from flowing back to the water softener due to negative pressure;

[0083] (6) By setting the anti-skid structure and the fastener, the first interface and the overflow line, the second interface and the drain line are prevented from being popped open;

[0084] (7) By setting the flow resistance structure inside the first interface, the liquid remaining in the cavity is further prevented from flowing back from the first interface;

[0085] (8) By setting the flow guide plate at the second water outlet, the water outlet of the second water outlet is guided and dispersed, and the mutual adhesion of the water outlets of the two interfaces to cause backflow is further reduced.

[0086] The above embodiments only express several embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, and the utility model also intends to include these changes and modifications.

Claims

1. A backflow prevention floor drain, characterized in that, include: The main body (10) has a first interface (22) and a second interface (24) on its top. The first interface (22) includes a first water inlet (222) and a first water outlet (224). The second interface (24) includes a second water inlet (242) and a second water outlet (244). The anti-backflow structure (26) is fixed on the top of the main body (10) and located between the first outlet (224) and the second outlet (244) to prevent the water from the first interface (22) or the second interface (24) from flowing back to the other interface.

2. The anti-backflow floor drain according to claim 1, characterized in that: The bottom of the main body (10) is provided with a water outlet (30), and a retention cavity (40) is formed between the top and the bottom. The first water inlet (222) is used to connect the overflow pipe of the water softener, the first water outlet (224) is used to connect the retention cavity (40), the second water inlet (242) is used to connect the drain pipe of the water softener, and the second water outlet (244) is used to connect the retention cavity (40).

3. The anti-backflow floor drain according to claim 2, characterized in that: The backflow prevention structure (26) includes a partition (262), which is fixed to the inner surface of the top of the main body (10) facing the retention cavity (40) and located between the first outlet (224) and the second outlet (244); the partition (262) is provided with a protrusion (264), and / or, a cone (266) is fixed to the side of the partition (262) away from the first outlet (224) and the second outlet (244), and the bottom surface of the cone (266) is fixed to the partition (262).

4. A backflow prevention floor drain according to claim 3, characterized in that: The partition (262) is located on the line connecting the center of the first outlet (224) and the center of the second outlet (244), and its side near the first outlet (224) and / or the side near the second outlet (244) is inclined from the top to the bottom of the main body (10).

5. A backflow prevention floor drain according to claim 3, characterized in that: The length direction of the partition (262) is perpendicular to the line connecting the center of the first outlet (224) and the center of the second outlet (244); or, the partition (262) includes a first arc-shaped plate (262a) and a second arc-shaped plate (262b), the first arc-shaped plate (262a) protruding toward the side away from the first outlet (224), and the second arc-shaped plate (262b) being fixedly connected to the first arc-shaped plate (262a) and protruding toward the side away from the second outlet (244).

6. A backflow prevention floor drain according to claim 2, characterized in that: The main body (10) has at least one hollow hole on its side wall, and the hollow hole is connected to the storage cavity (40).

7. A backflow prevention floor drain according to claim 2, characterized in that: The second outlet (244) protrudes from the inner surface of the top of the main body (10), and / or, the main body (10) is fixed with a plurality of guide plates (246), which are spaced apart around the second outlet (244).

8. A backflow prevention floor drain according to claim 1, characterized in that: The first interface (22) is provided with a flow-blocking structure (226); the flow-blocking structure (226) includes a plurality of staggered baffles (226b), or the flow-blocking structure (226) includes an annular protrusion (226a), baffles (226b) and a float (226c). The baffle (226b) is located on the side of the annular protrusion (226a) facing the first outlet (224) and forms a channel with the inner wall of the first interface (22). The float (226c) is disposed between the annular protrusion (226a) and the baffle (226b). The diameter of the float (226c) is greater than the inner diameter of the annular protrusion (226a) and the width of the channel.

9. A backflow prevention floor drain according to any one of claims 1 to 8, characterized in that: The outer surfaces of the first interface (22) and / or the second interface (24) are formed with an anti-slip structure.

10. A water softener, characterized in that, include: The anti-backflow floor drain according to any one of claims 1-9.

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