Water valve

Abstract

The invention relates to the technical field of water supply systems, and discloses a water valve which comprises a main valve body, a splitter plate, a drain valve assembly and two shut-off valve assemblies, the main valve body comprises a main pipe, a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are communicated with the main pipe, the two ends of the main pipe are used for being connected with an external pipeline, and the first branch pipe is used for being connected with an expansion tank; a water inlet channel and a water outlet channel are arranged in the main pipe, the splitter plate extends into the main pipe from the first branch pipe and is located between the water inlet channel and the water outlet channel, and the splitter plate divides the inner space of the first branch pipe into a water inlet runner communicated with the water inlet channel and a water outlet runner communicated with the water outlet channel. The two shut-off valve assemblies are arranged on the main pipe and used for adjusting connection and disconnection of the water inlet channel and the water outlet channel respectively, and the drainage valve assembly is arranged on the second branch pipe and used for adjusting connection and disconnection of the second branch pipe. The water flowing valve can circulate water in the expansion tank, dead water in the expansion tank is prevented, the water quality in a water supply system is improved, and pollution discharge operation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of water supply systems, and in particular to a live water valve. Background Art

[0002] In water supply systems such as electric water heaters and heat pumps, expansion tanks are usually installed. The expansion tanks have the functions of water holding and pressure buffering. When the system heats up, the expansion tank absorbs excess water from the system due to thermal expansion. When the system cools down or leaks, the expansion tank replenishes water to the system to balance the internal pressure of the water system and keep the pressure in the system at a normal state, thereby ensuring the normal operation of the equipment.

[0003] If the water in the expansion tank is not changed for a long time, impurities in the tap water will easily settle in the expansion tank. Long-term sedimentation will form stagnant water, which will breed bacteria and easily cause disease after contact with the body. These effects are accumulated over a long period of time and are difficult for ordinary users to detect. In addition, when the equipment has not been used for a long time and the water quality in the expansion tank or pipeline is poor, it is also cumbersome for users to drain the water.

[0004] Therefore, there is an urgent need to provide a live water valve to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a live water valve that can circulate the water in the expansion tank to play a role in living water, prevent stagnant water in the expansion tank, improve the water quality in the water supply system, reduce problems such as scale and bacterial growth, and facilitate sewage discharge operations.

[0006] The present invention is achieved through the following technical solutions:

[0007] A live water valve, comprising:

[0008] The main valve body includes a main pipe and a first branch pipe and a second branch pipe connected to the main pipe. Both ends of the main pipe are used to connect to external pipelines. The first branch pipe is used to connect to the expansion tank. The main pipe is provided with a water inlet channel and a water outlet channel.

[0009] a diverter plate extending from the first branch pipe into the main pipe and located between the water inlet channel and the water outlet channel, the diverter plate dividing the interior space of the first branch pipe into an inlet channel communicating with the water inlet channel and an outlet channel communicating with the water outlet channel;

[0010] Two shut-off valve assemblies, disposed on the main pipe and used to respectively regulate the on-off of the water inlet channel and the water outlet channel;

[0011] The drain valve assembly is arranged on the second branch pipe and is used to adjust the on-off state of the second branch pipe.

[0012] As an optional solution, there is a gap between the top end of the diverter plate and the inner wall of the main pipe, and the water inlet channel and the water outlet channel are connected through the gap.

[0013] As an optional solution, the ratio of the flow rate entering the water inlet channel to the flow rate entering the water outlet channel through the gap is in the range of 1.8 to 8.

[0014] As an optional solution, the diverter plate is a cross plate structure and includes a first plate and a second plate arranged vertically and crosswise, and the top of the first plate is higher than the top of the second plate or flush with the top of the second plate.

[0015] As an optional solution, the main pipe is a straight pipe, the first branch pipe is arranged perpendicular to the main pipe, the first flat plate is perpendicular to the axis of the main pipe, and there is the gap between the top of the first flat plate and the inner wall of the main pipe, and the second flat plate is parallel to the axis of the main pipe.

[0016] As an optional solution, the first flat plate includes a first portion and a second portion located in the middle of the top end of the first portion, the horizontal width of the second portion is smaller than the horizontal width of the first portion, the first portion extends from the first branch pipe into the main pipe and abuts against the side wall of the main pipe, and the outer contour of the second portion includes two arc edges and a horizontal straight edge connected between the two arc edges, and there is the gap between the arc edge and the horizontal straight edge and the inner wall of the main pipe.

[0017] As an optional solution, the horizontal width of the first part is 19.6mm~19.8mm, the horizontal maximum width of the second part is 15.5mm~15.7mm, the vertical height of the second part is 7.7mm~7.9mm, the radius of the arc-shaped edge is 7.4mm~7.81mm, and the vertical distance from the horizontal straight edge to the top of the second flat plate is 0~2.5mm.

[0018] As an optional solution, the ratio of the flow entering the water inlet channel to the flow entering the water outlet channel through the gap is 1.82, the radius of the arc edge is 7.4 mm, and the horizontal straight edge is flush with the top of the second flat plate.

[0019] As an optional solution, the diverter plate is a flat plate structure.

[0020] As an optional solution, the free end of the first branch pipe is sleeved with a union nut, and the union nut is used for threaded connection with the expansion tank.

[0021] As an optional solution, the shut-off valve assembly and / or the drain valve assembly is a ball valve assembly.

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a live water valve, wherein two shut-off valve assemblies are in a normally open state. When shut-off is required, the shut-off valve assemblies can be closed to isolate the water inlet channel and / or the water outlet channel. The diverter plate mainly plays the role of diversion and diversion. After water enters the water inlet channel, it is diverted and diverted by the diverter plate. A portion of the water enters the expansion tank through the water inlet channel. By squeezing the water in the expansion tank, the water in the expansion tank flows into the water outlet channel through the water outlet channel, and then flows from the water outlet channel to the rear end, which can circulate the water in the expansion tank and play the role of live water, preventing stagnant water in the expansion tank, improving the water quality in the water supply system, and reducing problems such as scale and bacterial growth. The drain valve assembly is in a normally closed state. When the water supply system has not been used for a long time and the water quality in the expansion tank or the pipeline is poor, the drain valve assembly can be used to open the second branch pipe to discharge the sewage through the second branch pipe. The operation is convenient, the sewage discharge operation is convenient, and the normal use of the water supply is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly and easily illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. The drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic structural diagram of the cooperation between the live water valve and the expansion tank provided in an embodiment of the present invention;

[0026] Figure 2 is a cross-sectional view of the cooperation between the live water valve and the expansion tank provided in an embodiment of the present invention;

[0027] Figure 3 is an isometric cross-sectional view of a live water valve provided by an embodiment of the present invention;

[0028] Figure 4 Schematic diagram of the structure of the diverter plate provided by an embodiment of the present invention;

[0029] Figure 5 is a partial cross-sectional view of a live water valve provided by an embodiment of the present invention;

[0030] Figure 6 is a front view of a diverter plate provided in an embodiment of the present invention;

[0031] Figure 7 It is a cross-sectional view of the living water valve provided by an embodiment of the present invention at the drain valve assembly.

[0032] In the picture:

[0033] 100. Expansion tank;

[0034] 10. Main valve body; 11. Main pipe; 111. Water inlet channel; 112. Water outlet channel; 113. Convex pipe; 12. First branch pipe; 121. Water inlet channel; 122. Water outlet channel; 123. Slot; 13. Second branch pipe;

[0035] 20. Manifold; 21. First plate; 201. First portion; 202. Second portion; 211. Arc-shaped edge; 212. Horizontal straight edge; 22. Second plate; 23. Gap;

[0036] 30. Shut-off valve assembly; 31. First valve core; 311. First through hole; 32. First valve stem; 33. First handle; 34. First valve seat;

[0037] 40. Drain valve assembly; 41. Drain valve body; 42. Second valve core; 421. Second through hole; 43. Second valve stem; 44. Second handle; 45. Second valve seat; 46. Plug; 47. Lock nut;

[0038] 50. Union nut assembly; 51. Union nut; 521. Stop edge; 52. Retaining ring; 53. Sealing gasket;

[0039] 60. Valve cover. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0041] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0044] This embodiment provides a live water valve for improving the water quality in a water supply system and preventing stagnant water. It can be applied to water supply systems such as electric water heaters and heat pumps. The live water valve is installed in a water supply pipe and used in conjunction with an expansion tank 100. The expansion tank 100 serves as a water container and a pressure buffer. When the system heats up, the expansion tank 100 absorbs excess water from the system due to thermal expansion. When the system cools down or leaks, the expansion tank 100 replenishes water to the system to balance the internal pressure of the water system and maintain the pressure in the system at a normal state, thereby ensuring the normal operation of the equipment. The specific structure and working principle of the expansion tank 100 belong to the prior art and will not be repeated here.

[0045] Specifically, if Figure 1 and Figure 2As shown, the live water valve includes a main valve body 10, a diverter plate 20, a drain valve assembly 40 and two shut-off valve assemblies 30. The main valve body 10 includes a main pipe 11 and a first branch pipe 12 and a second branch pipe 13 connected to the main pipe 11. Both ends of the main pipe 11 are used to connect to external pipelines. The first branch pipe 12 is used to connect to the expansion tank 100. The main pipe 11 is provided with an inlet channel 111 and an outlet channel 112. One end of the diverter plate 20 extends from the first branch pipe 12 into the main pipe 11 and is located between the inlet channel 111 and the outlet channel 112. The other end of the diverter plate 20 extends into the neck of the expansion tank 100 and rests against the mesh plate inside the neck of the expansion tank 100. The diverter plate 20 divides the internal space of the first branch pipe 12 into an inlet channel 121 connected to the inlet channel 111 and an outlet channel 122 connected to the outlet channel 112. Two shut-off valve assemblies 30 are provided on the main pipe 11 and are used to respectively adjust the on-off of the inlet channel 111 and the outlet channel 112. The drain valve assembly 40 is provided on the second branch pipe 13 and is used to adjust the on-off of the second branch pipe 13.

[0046] Among them, the two shut-off valve assemblies 30 are in a normally open state. When shut-off is required, the shut-off valve assemblies 30 can be closed to close the water inlet channel 111 and / or the water outlet channel 112. The diverter plate 20 mainly plays the role of diversion and diversion. Figure 2 After water enters the water inlet channel 111, it is diverted and guided by the diverter plate 20, and a portion of the water enters the expansion tank 100 through the water inlet channel 121. By squeezing the water in the expansion tank 100, the water in the expansion tank 100 flows into the water outlet channel 112 through the water outlet channel 122, and then flows to the rear end from the water outlet channel 112. In this way, the water in the expansion tank 100 can be circulated, playing the role of living water, preventing stagnant water in the expansion tank 100, improving the water quality in the water supply system, and reducing problems such as scale and bacterial growth. The drain valve assembly 40 is normally closed. When the water supply system has not been used for a long time and the water quality in the expansion tank 100 or the pipeline is poor, the second branch pipe 13 can be opened through the drain valve assembly 40 to discharge the sewage through the second branch pipe 13. The operation is convenient, and the sewage discharge operation is convenient, ensuring the normal use of the water supply.

[0047] Furthermore, if Figure 2 As shown, there is a gap 23 between the top of the diverter plate 20 and the inner wall of the main pipe 11, and the water inlet channel 111 and the water outlet channel 112 are connected through the gap 23. It is understandable that in actual application, the water flow rate entering the water inlet channel 121 is limited. Simply relying on the water entering the water inlet channel 121 to squeeze the expansion tank 100 so that the water in the expansion tank 100 flows to the rear end through the water outlet channel 122, the flow rate at the rear end cannot meet the use requirements. Therefore, by setting the gap 23, Figure 2 The dotted line in the figure indicates the direction of water flow. Figure 2After water enters the water inlet channel 111, part of the water enters the expansion tank 100 through the water inlet channel 121, circulating the water in the expansion tank 100 and playing the role of living water. The other part of the water flows directly into the water outlet channel 112 through the gap 23. The two water flows to the rear end at the same time to meet the flow demand of the rear end.

[0048] In an alternative embodiment, the diverter plate 20 may be a flat plate structure. The two sides of the flat plate structure abut against the inner wall of the first branch pipe 12 to divide the interior space of the first branch pipe 12 into a water inlet channel 121 with a semicircular cross-section and a water outlet channel 122 with a semicircular cross-section. However, this flat diverter plate 20 has a weak structural strength and may wobble during use, resulting in poor stability.

[0049] To this end, in this embodiment, Figure 3 and Figure 4 As shown, the diverter plate 20 is a cross-plate structure and includes a first flat plate 21 and a second flat plate 22 arranged perpendicularly and crosswise. The top of the first flat plate 21 is higher than or flush with the top of the second flat plate 22. In other words, the four sides of the cross-plate structure can abut against the inner wall of the first branch pipe 12 to divide the internal space of the first branch pipe 12 into two water inlet channels 121 with a quarter-sector cross-section and two water outlet channels 122 with a quarter-sector cross-section. Compared to a flat-plate diverter plate 20, this type of diverter plate 20 has a higher structural strength, is less likely to shake during use, and is more stable.

[0050] In this embodiment, if Figure 2 As shown, the main pipe 11 is a straight pipe for easy processing, and the first branch pipe 12 is arranged perpendicular to the main pipe 11 and extends in the horizontal direction.

[0051] On this basis, if Figure 3 and Figure 5 As shown, the first flat plate 21 is perpendicular to the axis of the main pipe 11, and the gap 23 is formed between the top of the first flat plate 21 and the inner wall of the main pipe 11. The second flat plate 22 is parallel to the axis of the main pipe 11. This ensures that the flow rate of water entering the water inlet channel 121 from the water inlet channel 111 is maximized, and the flow rate of water entering the water outlet channel 122 and the water outlet channel 112 from the expansion tank 100 is maximized, thereby meeting the flow rate requirements.

[0052] Specifically, combined Figure 5 and Figure 6The first plate 21 is an axisymmetric shape. It includes a first portion 201 and a second portion 202 located in the middle of the top of the first portion 201. The horizontal width of the second portion 202 is smaller than that of the first portion 201, so that a gap 23 can be formed between the second portion 202 and the inner wall of the main pipe 11. The first portion 201 extends from the first branch pipe 12 into the main pipe 11 and abuts against the side wall of the main pipe 11. The outer contour of the second portion 202 includes two arcuate edges 211 and a horizontal straight edge 212 connecting the two arcuate edges 211. The aforementioned gap 23 is formed between the arcuate edges 211 and the horizontal straight edge 212 and the inner wall of the main pipe 11. By configuring the outer contour of the second portion 202 as the arcuate edge 211 plus the horizontal straight edge 212, the gap 23 can be constructed into a generally arc-shaped structure, ensuring the area of ​​the gap 23. The arcuate edge 211 also provides good continuity, reducing the obstruction of the flow by sharp corners, thereby meeting the flow requirements of the rear end.

[0053] Since the inner diameter and outer diameter of the external pipe are fixed, the inner diameters of the first branch pipe 12 and the main pipe 11 are also fixed according to the size of the external pipe, and are usually set to 20 mm. Figure 5 and 6 As shown, the horizontal width D of the first portion 201 can be selected to be 19.6 mm to 19.8 mm, for example, 19.6 mm, 19.7 mm or 19.8 mm, so that the first portion 201 can be smoothly installed in the first branch pipe 12 and can rest against the inner wall of the first branch pipe 12 as much as possible without shaking, and the first portion 201 extends upward to a position in the main pipe 11 that is roughly flush with its axis. The maximum horizontal width d of the second portion 202 can be selected to be 15.5 mm to 15.7 mm, such as 15.5 mm, 15.6 mm, or 15.7 mm. Because the horizontal sides of the first portion 201 abut the inner wall of the branch pipe 11, the maximum horizontal width of the second portion 202 is smaller than the horizontal width of the first portion 201, allowing the aforementioned gap 23 to be formed between the horizontal sides of the second portion 202 and the inner wall of the main pipe 11. It should be noted that the horizontal width of the second portion 202 varies, so the maximum horizontal width of the second portion 202 refers to the horizontal width at the junction of the second portion 202 and the first portion 201. The vertical height h of the second portion 202 can be selected to be 7.7 mm to 7.9 mm, such as 7.7 mm, 7.8 mm, or 7.9 mm. The vertical height of the second portion 202 is smaller than the radius of the main pipe 11, allowing the aforementioned gap 23 to be formed between the top of the second portion 202 and the inner wall of the main pipe 11.

[0054] A slight change in the shape of the gap 23 will have a significant impact on the flow rate. In order to fine-tune the shape of the gap 23, the radius R of the arc-shaped edge 211 can be selected to be 7.4 mm to 7.81 mm, for example, 7.4 mm, 7.5 mm, 7.6 mm, 7.7 mm or 7.81 mm, etc. The central angle corresponding to the arc-shaped edge 211 is approximately 67°, and the vertical distance l from the horizontal straight edge 212 to the top of the second flat plate 22 can be selected to be 0 to 2.5 mm, for example, 0, 1 mm, 1.5 mm, 2 mm or 2.5 mm.

[0055] By setting the above dimensions, the ratio of the flow rate entering the water inlet channel 121 to the flow rate entering the water outlet channel 112 through the gap 23 can be set to 1.8-8.

[0056] During actual use, the applicant discovered that, in order to meet the flow requirements of the rear end, the ideal ratio of the flow rate entering the water inlet channel 121 to the flow rate entering the water outlet channel 112 through the gap 23 is 1.82. That is, nearly 65% ​​of the water in the water inlet channel 111 can enter the water inlet channel 121, and nearly 35% of the water can flow directly into the water outlet channel 112 through the gap 23. At this time, the radius R of the arc-shaped edge 211 is 7.4 mm, and the horizontal straight edge 212 is flush with the top of the second flat plate 22. In order to obtain the radius R of the arc-shaped edge 211 and the distance l from the horizontal straight edge 212 to the top of the second flat plate 22 at this ideal flow ratio, these two dimensions need to be fine-tuned. Slight changes in the dimensions will cause large changes in the flow ratio. Therefore, during the design process, the applicant conducted a series of simulation verifications for various dimensional conditions to obtain the optimal dimensions.

[0057] Specifically, combined Figure 6 , D = 19.7 mm, d = 15.6 mm, h = 7.8 mm, the inlet pressure is 4 bar, the two outlet pressures are atmospheric pressure, the flow rate from the water inlet channel 111 into the water inlet channel 121 is set as flow rate one, the flow rate from the water inlet channel 111 directly into the water outlet channel 112 through the gap 23 is set as flow rate two, the flow ratio is the ratio of flow rate one to flow rate two, and the simulation data are shown in Table 1.

[0058] Table 1

[0059] Working conditions l(mm) R(mm) <![CDATA[Flow rate 1 (m 3 / s)]]> <![CDATA[Flow rate two (m 3 / s)]]> Flow ratio 1 2.5 7.81 0.098322 0.00548 17.91 2 2 7.81 0.093223 0.013186 7.06 3 1.5 7.81 0.090931 0.017593 5.17 4 1 7.81 0.088398 0.022884 3.86 5 0.5 7.81 0.085523 0.028976 2.95 6 0 7.81 0.082206 0.0359 2.28 7 0 7.5 0.079751 0.040829 1.95 8 0 7.4 0.076789 0.042226 1.82

[0060] As can be seen from Table 1, when the ratio of flow rate 1 to flow rate 2 is 1.82, that is, nearly 65% ​​of the water in the water inlet channel 111 can enter the water inlet channel 121, and nearly 35% of the water can flow directly into the water outlet channel 112 through the gap 23, the radius R of the arc-shaped edge 211 is 7.4 mm, and the distance l from the horizontal straight edge 212 to the top of the second flat plate 22 is 0, that is, the horizontal straight edge 212 is flush with the top of the second flat plate 22.

[0061] In this embodiment, if Figure 4 As shown, the second plate 22 has a different structure from the first plate 21. The upper portion of the second plate 22 is constructed in a trapezoidal structure, with the width decreasing from bottom to top, and the minimum width at the top can be selected to be 10 mm. Of course, in other optional embodiments, the second plate 22 can also be constructed in the same structure as the first plate 21.

[0062] Alternatively, as Figure 5 As shown, the free end of the first branch pipe 12 is fitted with a union nut assembly 50. The union nut assembly 50 includes a union nut 51, which is disposed at the free end of the first branch pipe 12. The union nut 51 has an internal thread for threaded connection with the expansion tank 100. Specifically, the union nut assembly 50 also includes a retaining ring 52. A retaining ring 52 is received within a retaining groove 123 formed on the outer wall of the first branch pipe 12. One end of the union nut 51 is fitted around the outside of the first branch pipe 12 and is provided with a stopper edge 521. The inner diameter of the stopper edge 521 is smaller than the outer diameter of the retaining ring 52. The stopper edge 521 is axially limited to the side of the retaining ring 52 that is away from the end face of the first branch pipe 12. The retaining ring 52 can connect the union nut 51 and the first branch pipe 12, limit the axial outward movement of the union nut 51 to prevent it from falling off, and at the same time enable the union nut 51 to rotate relative to the first branch pipe 12, so as to facilitate the connection between the union nut 51 and the expansion tank 100, which is easy to operate.

[0063] Furthermore, if Figure 5 As shown, the union nut assembly 50 also includes a sealing gasket 53, which is a flat gasket and is disposed within the union nut 51. One side of the sealing gasket 53 abuts against the end face of the first branch pipe 12, and the other side can abut against the end face of the expansion tank 100. When the expansion tank 100 is installed, the sealing gasket 53 tightly fits between the end face of the expansion tank 100 and the end face of the first branch pipe 12, providing a seal to prevent fluid leakage, eliminating the need for raw tape.

[0064] Optionally, the bottoms of the first flat plate 21 and the second flat plate 22 each have a step, which is used to press against the lower surface of the sealing gasket 53 after the diverter plate 20 is installed in place, thereby achieving a limited and fixed installation of the diverter plate 20.

[0065] In an optional embodiment, the shut-off valve assembly 30 is a ball valve assembly, which has the characteristics of full bore and small flow resistance. Specifically, the structures of the two shut-off valve assemblies 30 are exactly the same. The shut-off valve assembly 30 in the water inlet channel 111 is used as an example for explanation. Figure 2As shown, the shut-off valve assembly 30 includes a first valve stem 32 and a first valve core 31. The first valve core 31 is spherical and is disposed in the main pipe 11. The first valve core 31 is provided with a first through hole 311 for connecting to the water inlet channel 111. The main pipe 11 is provided with a convex pipe 113 connected thereto. One end of the first valve stem 32 extends into the convex pipe 113 and is connected to the first valve core 31. The other end of the first valve stem 32 extends out of the convex pipe 113 and is connected to the first handle 33. By rotating the first handle 33, the first valve stem 32 can be driven to rotate the first valve core 31, so that the shut-off valve assembly 30 can be switched between an open state and a closed state. Specifically, as shown in FIG. Figure 2 As shown, when the shut-off valve assembly 30 is in the open state, the first through hole 311 of the first valve core 31 and the center of the water inlet channel 111 completely coincide with each other to achieve fluid conduction. By rotating the first handle 33, the first valve stem 32 drives the first valve core 31 to rotate, and the overlapping area of ​​the first through hole 311 and the water inlet channel 111 can be adjusted to adjust the flow rate. When the first through hole 311 is perpendicular to the axis of the water inlet channel 111, the fluid can be cut off, thereby achieving the closure of the shut-off valve assembly 30.

[0066] like Figure 2 As shown, the shut-off valve assembly 30 also includes two first valve seats 34, which are disposed within the main pipe 11 and abut against either side of the first valve core 31, thereby limiting the position of the first valve core 31 and ensuring a certain sealing effect. Valve covers 60 are threadedly connected to each end of the main pipe 11, and the valve covers 60 abut against the first valve seats 34 near the outer side, thereby limiting the position of the two first valve seats 34.

[0067] In another optional embodiment, the shut-off valve assembly 30 may also adopt other valve assemblies that can realize the shut-off and opening functions, such as a gate valve assembly, the structure of which belongs to the existing technology and will not be described in detail here.

[0068] In an optional embodiment, if Figure 3 As shown, the second branch pipe 13 is arranged perpendicularly to the main pipe 11 and to the first branch pipe 12, and the second branch pipe 13 is located between the water inlet channel 111 and the water outlet channel 112. By reasonably setting the positions of the first branch pipe 12 and the second branch pipe 13, interference between the drain valve assembly 40 and other components is prevented, and the drain valve assembly 40 is arranged in the second branch pipe 13, avoiding the main pipe 11, and will not affect the flow of the main pipe 11.

[0069] Optionally, the drain valve assembly 40 is also a ball valve assembly. Specifically, Figure 7As shown, the drain valve assembly 40 includes a drain valve body 41, a second valve stem 43, and a second valve core 42. The drain valve body 41 is threadedly connected to the second branch pipe 13. The second valve core 42 is spherical and disposed within the drain valve body 41. The second valve core 42 is provided with a second through hole 421 for communicating with the internal passage of the drain valve body 41. One end of the second valve stem 43 extends into the drain valve body 41 and is connected to the second valve core 42. The other end of the second valve stem 43 extends out of the drain valve body 41 and is connected to the second handle 44. By rotating the second handle 44, the second valve stem 43 can be driven to rotate the second valve core 42, thereby switching the drain valve assembly 40 between an open state and a closed state.

[0070] Specifically, if Figure 7 As shown, when the drain valve assembly 40 is in the open state, the second through hole 421 of the second valve core 42 and the center of the internal channel of the drain valve body 41 completely coincide with each other to achieve fluid conduction, and the sewage in the main pipe 11 or the expansion tank 100 can be discharged through the internal channel of the drain valve body 41; by rotating the second handle 44, driving the second valve stem 43 to drive the second valve core 42 to rotate, the overlapping area of ​​the second through hole 421 and the internal channel of the drain valve body 41 can be adjusted, thereby adjusting the flow rate. When the second through hole 421 is perpendicular to the axis of the internal channel of the drain valve body 41, the fluid can be cut off, thereby achieving the closure of the drain valve assembly 40, and the drainage operation is more convenient.

[0071] like Figure 7 As shown, the drain valve assembly 40 further includes a locking nut 47, which is threadedly mounted on the outside of the drain valve body 41. Specifically, the drain valve body 41 has two threads on its outside, one of which is threadedly connected to the second branch pipe 13, and the other thread is located outside the second branch pipe 13 and is threadedly connected to the locking nut 47. The locking nut 47 abuts against the end surface of the second branch pipe 13, thereby locking the drain valve body 41 within the second branch pipe 13 and preventing the drain valve body 41 from falling off.

[0072] like Figure 7 As shown, the drain valve assembly 40 also includes a plug 46 and two second valve seats 45. The two second valve seats 45 are disposed within the drain valve body 41 and respectively abut against both sides of the second valve core 42, thereby achieving a position-limited installation of the second valve core 42 and ensuring a certain sealing effect. The plug 46 is threadedly connected to the drain valve body 41 and abuts against the second valve seats 45 near the outer side, thereby achieving a position-limited installation of the two second valve seats 45.

[0073] In another optional embodiment, the drain valve assembly 40 may also adopt other valve assemblies that can realize the closing and opening functions, such as a gate valve assembly, which will not be described in detail here.

[0074] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A live water valve, characterized in that: include: The main valve body (1) comprises a main pipe (11) and a first branch pipe (12) and a second branch pipe (13) in communication with the main pipe (11); both ends of the main pipe (11) are used to be connected to external pipelines; the first branch pipe (12) is used to be connected to an expansion tank (100); and a water inlet channel (111) and a water outlet channel (112) are provided in the main pipe (11); a diverter plate (20) extending from the first branch pipe (12) into the main pipe (11) and located between the water inlet channel (111) and the water outlet channel (112), the diverter plate (20) dividing the internal space of the first branch pipe (12) into a water inlet channel (121) communicating with the water inlet channel (111) and a water outlet channel (122) communicating with the water outlet channel (112); Two shut-off valve assemblies (30) are provided on the main pipe (11) and are used to respectively regulate the on-off of the water inlet channel (111) and the water outlet channel (112); The drain valve assembly (40) is arranged on the second branch pipe (13) and is used to adjust the on-off state of the second branch pipe (13).

2. The live water valve according to claim 1, characterized in that: A gap (23) is provided between the top end of the diverter plate (20) and the inner wall of the main pipe (11), and the water inlet channel (111) and the water outlet channel (112) are connected via the gap (23).

3. The live water valve according to claim 2, characterized in that: The ratio of the flow rate entering the water inlet channel (121) to the flow rate entering the water outlet channel (112) through the gap (23) is in the range of 1.8 to 8.

4. The live water valve according to claim 3, characterized in that: The diverter plate (20) is a cross plate structure and comprises a first flat plate (21) and a second flat plate (22) arranged vertically and crosswise, wherein the top end of the first flat plate (21) is higher than the top end of the second flat plate (22) or is flush with the top end of the second flat plate (22).

5. The live water valve according to claim 4, characterized in that: The main pipe (11) is a straight pipe, the first branch pipe (12) is arranged perpendicular to the main pipe (11), the first flat plate (21) is perpendicular to the axis of the main pipe (11), and there is a gap (23) between the top of the first flat plate (21) and the inner wall of the main pipe (11), and the second flat plate (22) is parallel to the axis of the main pipe (11).

6. The live water valve according to claim 5, characterized in that: The first flat plate (21) comprises a first portion (201) and a second portion (202) located in the middle of the top of the first portion (201); the horizontal width of the second portion (202) is smaller than the horizontal width of the first portion (201); the first portion (201) extends from the first branch pipe (12) into the main pipe (11) and abuts against the side wall of the main pipe (11); the outer contour of the second portion (202) comprises two arc-shaped edges (211) and a horizontal straight edge (212) connected between the two arc-shaped edges (211); and the gap (23) is formed between the arc-shaped edge (211) and the horizontal straight edge (212) and the inner wall of the main pipe (11).

7. The live water valve according to claim 6, characterized in that: The horizontal width of the first portion (201) is 19.6 mm to 19.8 mm, the horizontal maximum width of the second portion (202) is 15.5 mm to 15.7 mm, the vertical height of the second portion (202) is 7.7 mm to 7.9 mm, the radius of the arc-shaped edge (211) is 7.4 mm to 7.81 mm, and the vertical distance between the horizontal straight edge (212) and the top of the second flat plate (22) is 0 to 2.5 mm.

8. The live water valve according to claim 7, characterized in that: The ratio of the flow rate entering the water inlet channel (121) to the flow rate entering the water outlet channel (112) through the gap (23) is 1.82, the radius of the arc-shaped edge (211) is 7.4 mm, and the horizontal straight edge (212) is flush with the top of the second flat plate (22).

9. The live water valve according to claim 1 or 2, characterized in that: The diverter plate (20) is a flat plate structure.

10. The living water valve according to any one of claims 1 to 8, characterized in that: A free end of the first branch pipe (12) is sleeved with a union nut (51), and the union nut (51) is used for threaded connection with the expansion tank (100).

11. The living water valve according to any one of claims 1 to 8, characterized in that: The shut-off valve assembly (30) and / or the drain valve assembly (40) is a ball valve assembly.

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