Backwater flow divider

Abstract

The utility model discloses a backwater flow divider which comprises an outer shell, an installation shell and a tailstock. A first mounting port and a second mounting port are formed in the two ends of the shell, a pressure reduction outlet, a pure water inlet and a pure water outlet are formed in the side face, a pressure reduction cavity and a pure water cavity are formed in the shell, a backflow port is formed between the pressure reduction cavity and the pure water cavity, and a one-way valve assembly is arranged in the pressure reduction cavity; the mounting shell is mounted at the first mounting opening and is provided with a raw water connector; a pressure reducing valve assembly is arranged in the mounting shell; the tailstock is installed at the second installation opening, and a water return assembly is arranged between the tailstock and the shell and used for controlling the amount of backflow of pure water from the pure water cavity to the pressure reduction cavity. According to the utility model, the requirements of different water outlet flows are met, a plurality of water using modes are provided, and the automatic regulation of the water outlet flow of the pure water pipeline of the water purifier is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply treatment equipment, in particular to a water return diverter. Background Art

[0002] Ordinary tankless quick-heat pipeline machines are mainly supplied with water by large-flow water purifiers. The pure water flow rate of large-flow water purifiers is usually above 1L / min. Due to the limitation of heating power, the boiling water flow rate of quick-heat pipeline machines is usually 350-400ml / min. The start / stop of the water purifier is controlled by the pressure switch inside the water purifier. Since the pure water supply is greater than the heating demand, the excess pure water has nowhere to overflow, which will cause the pressure at the pure water end of the water purifier to be higher than the disconnection value of the pressure switch, causing the water purifier to shut down. As the quick-heat pipeline machine continues to use water, the pressure at the pure water end of the water purifier will be lower than the connection value of the pressure switch, and the water purifier will start again, which will cause the water purifier to fail to work normally due to frequent startup and shutdown. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a water return diverter that can meet the needs of different water flow rates, provide multiple water use modes, and realize automatic adjustment of the water flow rate of the pure water pipeline of the water purifier.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A water return diverter comprises a shell, a mounting shell and a tailstock;

[0006] A first mounting port and a second mounting port are respectively formed at two ends of the shell; a decompression outlet, a pure water inlet and a pure water outlet are sequentially arranged on the side of the shell from the first mounting port to the second mounting port; a decompression chamber and a pure water chamber are formed inside the shell, the decompression chamber is arranged close to the first mounting port, the decompression chamber is communicated with the first mounting port and the decompression outlet, the pure water chamber is arranged close to the second mounting port, the pure water chamber is communicated with the second mounting port, the pure water inlet and the pure water outlet, a reflux port is arranged between the decompression chamber and the pure water chamber, the decompression chamber is communicated with the pure water chamber through the reflux port; a one-way valve assembly is arranged in the decompression chamber, the one-way valve assembly only allows water in the pure water chamber to enter the decompression chamber in one direction through the reflux port;

[0007] The installation shell is installed at the first installation port, and a raw water interface is formed at one end of the installation shell away from the first installation port; a pressure reducing valve assembly is arranged in the installation shell, and the pressure reducing valve assembly is used to connect the raw water interface with the pressure reducing chamber, and the pressure reducing valve assembly can reduce or cut off the water supply from the raw water interface to the pressure reducing chamber;

[0008] The tailstock is installed at the second installation port; a water return assembly is arranged between the tailstock and the housing, and the water return assembly is used to control the amount of pure water reflux from the pure water chamber to the decompression chamber.

[0009] In an optional embodiment, the water return component includes a diaphragm, which divides the pure water chamber into a pure water inlet chamber and a pure water outlet chamber, the pure water inlet chamber is connected to the pure water inlet, and the pure water outlet chamber is connected to the pure water outlet, and a first water hole for connecting the pure water inlet chamber and the pure water outlet chamber is formed on the diaphragm; the diaphragm automatically adjusts the opening of the reflux port under the action of the water pressure difference between the pure water inlet chamber and the pure water outlet chamber; when the pure water When no water is needed at the water outlet, the diaphragm blocks the reflux port; when water is needed at the pure water outlet, the pressure in the pure water outlet chamber decreases, and the diaphragm expands and contracts in the direction away from the reflux port under the action of the water pressure to open the reflux port; when the water inlet flow rate of the pure water inlet increases, the diaphragm moves away from the reflux port under the action of pressure, the opening of the reflux port increases, and the reflux amount increases; when the water inlet flow rate of the pure water inlet decreases, the diaphragm moves close to the reflux port under the action of pressure, the opening of the reflux port decreases, and the reflux amount decreases.

[0010] In an optional embodiment, the return water assembly also includes a diaphragm bracket and a limit seat, the diaphragm bracket is arranged on the side of the diaphragm close to the return port, the limit seat is arranged on the side of the diaphragm close to the second mounting port, and the edge of the diaphragm is fixed between the diaphragm bracket and the limit seat, thereby radially interference sealing the edge of the diaphragm.

[0011] In an optional embodiment, a guide portion extends from the edge of the reflux port toward the pure water chamber, a guide frame is formed on the side of the diaphragm bracket close to the reflux port, the guide frame is sleeved on the outside of the guide portion, and the guide frame is slidably connected to the guide portion.

[0012] In an optional embodiment, the return water assembly also includes a pressure plate, which is arranged on one side of the diaphragm and has a slot; a clamping column is provided at a position corresponding to the diaphragm and the slot, and the pressure plate is clamped to the side of the diaphragm close to the limit seat through the cooperation of the clamping column and the slot.

[0013] In an optional embodiment, the water return assembly further includes an elastic member, wherein the elastic member is disposed between the pressure plate and the limit seat, and the elastic member applies an elastic force to the pressure plate to move it closer to the return port; the elastic member is a pressure spring.

[0014] In an optional embodiment, a pure water flow chamber is formed between the limit seat and the diaphragm; a second water hole is opened on the limit seat, and the second water hole connects the pure water flow chamber and the pure water outlet chamber.

[0015] In an optional implementation, a sealing ring is provided at the connection between the tail stock and the second mounting opening, and the tail stock is circumferentially pressed to the second mounting opening by a plurality of bolts.

[0016] In an optional embodiment, a plurality of support blocks are provided on one side of the tail stock close to the second mounting port, and the support blocks are used to abut against the limit seat; a water passage is formed between the support blocks, and the water passage is used to connect the pure water outlet chamber with the pure water outlet.

[0017] In an optional implementation, the raw water interface, the reduced pressure outlet, the pure water inlet and the pure water outlet are all provided with quick pipe joints.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] When the pure water outlet does not need water, the water pressure in the pure water outlet chamber is equal to that in the pure water inlet chamber, and the diaphragm will seal the reflux port under the action of the water pressure and the elastic member, and the pressure at the pure water end of the water purifier continues to rise to reach the disconnection value of the pressure switch inside the water purifier, causing the water purifier to stop working; when the pure water outlet has a water demand, pure water enters the pure water inlet chamber from the pure water inlet, enters the pure water flow chamber through the first water hole on the diaphragm, enters the pure water outlet chamber through the second water hole, and then enters the pure water outlet through the water channel and flows out; at this time, if the pure water outlet has a small flow demand for water, and the flow rate of the pure water inlet is large , the water pressure in the pure water inlet chamber is greater than that in the pure water outlet chamber, and the diaphragm compresses the elastic part under the action of the water pressure and moves away from the reflux port to open the reflux port; as the water inlet flow rate of the pure water inlet increases, the diaphragm moves away from the reflux port under the action of pressure, the opening of the reflux port increases, and the reflux amount increases; as the water inlet flow rate of the pure water inlet decreases, the diaphragm approaches the reflux port under the action of pressure, the opening of the reflux port decreases, and the reflux amount decreases, thereby realizing automatic adjustment of the opening of the diaphragm and the reflux port according to the pure water outlet flow rate of the water purifier and the water flow rate of the user, thereby adapting to different water use needs and avoiding the problem of frequent start / stop of the water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the water return diverter of Example 1;

[0021] Figure 2 It is a cross-sectional view of the AA section of the water return diverter of Example 1;

[0022] Figure 3 It is a schematic structural diagram of the housing of the water return diverter of Example 1;

[0023] Figure 4It is a schematic structural diagram of the tailstock of the water return diverter of Example 1;

[0024] Figure 5 It is a structural schematic diagram of the limit seat of the return diverter of Example 1;

[0025] Figure 6 It is a schematic diagram of the structure of the diaphragm of the water return diverter of Example 1;

[0026] Figure 7 This is a schematic diagram of the structure of the diaphragm support of the return diverter of Example 1.

[0027] In the figure: 10, shell; 11, first mounting port; 12, second mounting port; 13, pressure reducing outlet; 14, pure water inlet; 15, pure water outlet; 16, pressure reducing chamber; 17, pure water chamber; 171, pure water inlet chamber; 172, pure water flow chamber; 173, pure water outlet chamber; 18, reflux port; 20, mounting shell; 21, raw water interface; 30, tail seat; 31, support block; 32, water passage; 40, one-way valve assembly; 50, pressure reducing valve assembly; 61, diaphragm; 611, first water passage; 62, diaphragm bracket; 621, guide frame; 63, limit seat; 631, second water passage; 64, pressure plate; 65, elastic member. DETAILED DESCRIPTION

[0028] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Embodiment 1:

[0033] Please refer to Figure 1-7 The present embodiment provides a water return splitter, including a housing 10, a mounting housing 20 and a tailstock 30, wherein the mounting housing 20 and the tailstock 30 are respectively sealed and connected to two ends of the housing 10.

[0034] Specifically, a first mounting opening 11 and a second mounting opening 12 are formed at both ends of the housing 10, the first mounting opening 11 is used to mount the mounting housing 20, and the second mounting opening 12 is used to mount the tailstock 30;

[0035] The side of the housing 10 is provided with a decompression outlet 13, a pure water inlet 14 and a pure water outlet 15 in sequence from the first installation opening 11 to the second installation opening 12; the decompression outlet 13 is used to connect to the water inlet of the water purifier, the pure water inlet 14 is used to connect to the pure water pipeline of the water purifier, and the pure water outlet 15 is used to connect to the quick heating wire machine;

[0036] A decompression chamber 16 and a pure water chamber 17 are formed inside the housing 10 , and a reflux port 18 is disposed between the decompression chamber 16 and the pure water chamber 17 .

[0037] The decompression chamber 16 is arranged near the first installation port 11, so that the decompression chamber 16 is connected with the first installation port 11, the decompression outlet 13, and the reflux port 18. The pure water chamber 17 is arranged near the second installation port 12, so that the pure water chamber 17 is connected with the second installation port 12, the pure water inlet 14, the pure water outlet 15, and the reflux port 18. The decompression chamber 16 is connected with the pure water chamber 17 through the reflux port 18.

[0038] A one-way valve assembly 40 is provided in the decompression chamber 16, and the one-way valve assembly 40 is arranged between the reflux port 18 and the decompression outlet 13. The one-way valve assembly 40 only allows water in the pure water chamber 17 to enter the decompression chamber 16 in one direction through the reflux port 18, thereby preventing raw water in the decompression chamber 16 that has not been treated by the water purifier from entering the pure water chamber 17.

[0039] The installation shell 20 is installed at the first installation port 11, and a raw water interface 21 is formed at one end of the installation shell 20 away from the first installation port 11. A pressure reducing valve assembly 50 is arranged in the installation shell 20, and the pressure reducing valve assembly 50 is used to connect the raw water interface 21 with the pressure reducing chamber 16. The pressure reducing valve assembly 50 can reduce or cut off the water supply from the raw water interface 21 to the pressure reducing chamber 16 to avoid excessive pressure in the pressure reducing chamber 16 affecting the reflux effect. The method of installing the pressure reducing valve assembly 50 at the first installation port 11 through the installation shell 20 is more convenient, saves space, and has a better sealing effect than the method of directly installing the pressure reducing valve assembly 50 inside the housing 10.

[0040] The tailstock 30 is installed at the second installation opening 12 ; a water return assembly is provided between the tailstock 30 and the housing 10 , and the water return assembly is used to control the amount of pure water reflux from the pure water chamber 17 to the decompression chamber 16 .

[0041] The return water assembly of this embodiment includes a diaphragm 61, a diaphragm bracket 62, a pressure plate 64, an elastic member 65 and a limit seat 63. The diaphragm 61, the diaphragm bracket 62, the pressure plate 64, the elastic member 65 and the limit seat 63 are arranged in sequence in the pure water chamber 17 along the direction from the return port 18 to the second installation port 12.

[0042] The pure water chamber 17 is divided into a pure water inlet chamber 171, a pure water flow chamber 172 and a pure water outlet chamber 173 in sequence by the diaphragm 61 and the limiting seat 63. The pure water inlet chamber 171 is connected with the pure water inlet 14 and the reflux port 18, the pure water outlet chamber 173 is connected with the pure water outlet 15, and the pure water flow chamber 172 is arranged between the pure water inlet chamber 171 and the pure water outlet chamber 173, wherein a first water hole 611 is formed on the diaphragm 61, and the first water hole 611 is used to connect the pure water inlet chamber 171 with the pure water flow chamber 172; the limiting seat 63 is provided with a second water hole 631, and the second water hole 631 connects the pure water flow chamber 172 with the pure water outlet chamber 173.

[0043] The diaphragm bracket 62 and the limit seat 63 are respectively arranged on the opposite sides of the diaphragm 61, wherein the diaphragm bracket 62 is arranged on the side of the diaphragm 61 close to the reflux port 18, and the limit seat 63 is arranged on the side of the diaphragm 61 close to the second mounting port 12, and the edge of the diaphragm 61 is fixed between the diaphragm bracket 62 and the limit seat 63, so that the edge of the diaphragm 61 is radially interference sealed in the pure water chamber 17.

[0044] In this embodiment, a guide portion is extended from the edge of the reflux port 18 toward the pure water chamber 17, and a guide frame 621 is formed on the side of the diaphragm bracket 62 close to the reflux port 18. The guide frame 621 is sleeved on the outside of the guide portion, and the guide frame 621 is slidably connected to the guide portion. The guide frame 621 is used to better drive the diaphragm 61 closer to or away from the reflux port 18, thereby controlling the opening of the diaphragm 61 and the reflux port 18.

[0045] The pressing plate 64 is arranged on the side of the diaphragm 61 close to the limit seat 63, and a slot is provided on the pressing plate 64; a clamping column is arranged at the corresponding position of the diaphragm 61 and the slot, and the pressing plate 64 and the diaphragm 61 are clamped together by the clamping column and the slot; the elastic member 65 is arranged between the pressing plate 64 and the limit seat 63, one end of the elastic member 65 abuts against the pressing plate 64, and the other end abuts against the limit seat 63, so as to apply an elastic force to the pressing plate 64 to approach the reflux port 18, and provide the diaphragm 61 with an initial pressure to block the reflux port 18. The elastic member 65 of this embodiment is a pressure spring.

[0046] In this embodiment, a sealing ring is provided at the connection between the tailstock 30 and the second mounting opening 12, and the tailstock 30 is pressed against the second mounting opening 12 by a plurality of bolts in the circumferential direction. A plurality of support blocks 31 are provided on the side of the tailstock 30 close to the second mounting opening 12, and the support blocks 31 are used to abut against the limit seat 63 to support the return water assembly; a water passage 32 is formed between the support blocks 31, and the water passage 32 is used to connect the pure water outlet chamber 173 and the pure water outlet 15. The support blocks 31 and the water passage 32 are provided to prevent the limit seat 63 from excessive displacement and block the pure water outlet 15 to cause a malfunction.

[0047] When in use, pure water enters the pure water inlet chamber 171 from the pure water inlet 14, enters the pure water flow chamber 172 through the first water hole 611 on the diaphragm 61, enters the pure water outlet chamber 173 through the second water hole 631, and then enters the pure water outlet 15 through the water channel 32 and flows out;

[0048] When the pure water outlet 15 does not need water, the water pressure in the pure water outlet chamber 173 is equal to that in the pure water inlet chamber 171, and the diaphragm 61 seals the reflux port 18 under the action of the water pressure and the elastic member 65, and the pressure at the pure water end of the water purifier continues to rise to the disconnection value of the pressure switch inside the water purifier, causing the water purifier to stop working;

[0049] When there is a water demand at the pure water outlet 15, and the pure water outlet 15 has a small water demand, and the flow rate of the pure water inlet 14 is large, the water pressure in the pure water inlet chamber 171 is greater than that in the pure water outlet chamber 173, and the diaphragm 61 compresses the elastic member 65 under the action of the water pressure to move away from the reflux port 18, thereby opening the reflux port 18; when the water inlet flow rate of the pure water inlet 14 increases, the diaphragm 61 moves away from the reflux port 18 under the action of the pressure, the opening of the reflux port 18 increases, and the reflux amount increases; when the water inlet flow rate of the pure water inlet 14 decreases, the diaphragm 61 approaches the reflux port 18 under the action of the pressure, the opening of the reflux port 18 decreases, and the reflux amount decreases, thereby realizing automatic adjustment of the opening of the diaphragm 61 and the reflux port 18 according to the pure water outlet flow rate of the water purifier and the water flow rate of the user, thereby adapting to different water needs and avoiding the problem of frequent start / stop of the water purifier.

[0050] Although only certain components and embodiments of the present application have been illustrated and described, many modifications and changes (e.g., changes in size, dimensions, structure, shape and proportion of the various elements, mounting arrangements, use of materials, color, orientation, etc.) may be envisioned by those skilled in the art without actually departing from the scope and spirit of the claims.

[0051] Finally, it should be noted that the above-mentioned implementation mode is only a preferred embodiment of the present utility model, and cannot be used to limit the scope of protection of the present utility model. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present utility model shall fall within the scope of protection required by the present utility model.

Claims

1. A water return diverter, characterized in that: It includes a housing, a mounting shell and a tailstock; A first mounting port and a second mounting port are respectively formed at two ends of the shell; a decompression outlet, a pure water inlet and a pure water outlet are sequentially arranged on the side of the shell from the first mounting port to the second mounting port; a decompression chamber and a pure water chamber are formed inside the shell, the decompression chamber is arranged close to the first mounting port, the decompression chamber is communicated with the first mounting port and the decompression outlet, the pure water chamber is arranged close to the second mounting port, the pure water chamber is communicated with the second mounting port, the pure water inlet and the pure water outlet, a reflux port is arranged between the decompression chamber and the pure water chamber, the decompression chamber is communicated with the pure water chamber through the reflux port; a one-way valve assembly is arranged in the decompression chamber, the one-way valve assembly only allows water in the pure water chamber to enter the decompression chamber in one direction through the reflux port; The installation shell is installed at the first installation port, and a raw water interface is formed at one end of the installation shell away from the first installation port; a pressure reducing valve assembly is arranged in the installation shell, and the pressure reducing valve assembly is used to connect the raw water interface with the pressure reducing chamber, and the pressure reducing valve assembly can reduce or cut off the water supply from the raw water interface to the pressure reducing chamber; The tailstock is installed at the second installation port; a water return assembly is arranged between the tailstock and the housing, and the water return assembly is used to control the amount of pure water reflux from the pure water chamber to the decompression chamber.

2. A water return diverter according to claim 1, characterized in that: The water return assembly includes a diaphragm, which divides the pure water chamber into a pure water inlet chamber and a pure water outlet chamber. The pure water inlet chamber is connected to the pure water inlet, and the pure water outlet chamber is connected to the pure water outlet. A first water hole for connecting the pure water inlet chamber and the pure water outlet chamber is formed on the diaphragm; the diaphragm automatically adjusts the opening of the reflux port under the action of the water pressure difference between the pure water inlet chamber and the pure water outlet chamber; when the pure water outlet does not need to be opened, the diaphragm automatically adjusts the opening of the reflux port. When water is flowing through the pure water outlet, the diaphragm blocks the reflux port; when water is needed at the pure water outlet, the pressure in the pure water outlet chamber decreases, and the diaphragm moves away from the reflux port under the action of the water pressure to open the reflux port; when the water inlet flow rate of the pure water inlet increases, the diaphragm moves away from the reflux port under the action of the pressure, the opening of the reflux port increases, and the reflux amount increases; when the water inlet flow rate of the pure water inlet decreases, the diaphragm moves close to the reflux port under the action of the pressure, the opening of the reflux port decreases, and the reflux amount decreases.

3. A water return diverter according to claim 2, characterized in that: The return water assembly also includes a diaphragm bracket and a limit seat. The diaphragm bracket is arranged on the side of the diaphragm close to the return port, and the limit seat is arranged on the side of the diaphragm close to the second mounting port. The edge of the diaphragm is fixed between the diaphragm bracket and the limit seat, thereby radially interference sealing the edge of the diaphragm.

4. A water return diverter according to claim 3, characterized in that: A guide portion is extended from the edge of the reflux port toward the pure water chamber, and a guide frame is formed on the side of the diaphragm bracket close to the reflux port. The guide frame is sleeved on the outside of the guide portion, and the guide frame is slidably connected to the guide portion.

5. A water return diverter according to claim 3, characterized in that: The return water assembly also includes a pressure plate, which is arranged on one side of the diaphragm and has a slot. A clamping column is arranged at the corresponding position of the diaphragm and the clamping column cooperates with the slot to clamp the pressure plate to the side of the diaphragm close to the limit seat.

6. A water return diverter according to claim 5, characterized in that: The water return assembly also includes an elastic member, which is arranged between the pressure plate and the limiting seat, and applies an elastic force to the pressure plate to move it closer to the return port; the elastic member is a pressure spring.

7. A water return diverter according to claim 6, characterized in that: A pure water flow chamber is formed between the limiting seat and the diaphragm; a second water flow hole is opened on the limiting seat, and the second water flow hole connects the pure water flow chamber and the pure water outlet chamber.

8. A water return diverter according to claim 6, characterized in that: A sealing ring is provided at the connection between the tailstock and the second mounting opening, and the tailstock is pressed on the second mounting opening in the circumferential direction by a plurality of bolts.

9. A water return diverter according to claim 8, characterized in that: A plurality of support blocks are arranged on one side of the tailstock close to the second mounting opening, and the support blocks are used to abut against the limit seat; a water passage is formed between the support blocks, and the water passage is used to connect the pure water outlet chamber with the pure water outlet.

10. The water return diverter according to claim 1, characterized in that: The raw water interface, the reduced pressure outlet, the pure water inlet and the pure water outlet are all provided with quick pipe joints.

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