Synchronous double-switch valve plate assembly and synchronous double-switch valve core

Abstract

The present invention discloses a synchronous double-switch valve plate assembly and a synchronous double-switch valve core. The synchronous double-switch valve plate assembly includes a movable valve plate and a fixed valve plate. The fixed valve plate is provided with a first water inlet / outlet through hole, a second water inlet / outlet through hole, a third water inlet / outlet through hole, and a fourth water inlet / outlet through hole. The lower surface of the movable valve plate is provided with a first water passing groove and a second water passing groove. The first water passing groove includes a communication end A and a communication end B, and the lower surface of the movable valve plate between the communication end A and the communication end B is a first sealing surface. The second water passing groove includes a communication end C and a communication end D, and the lower surface of the movable valve plate between the communication end C and the communication end D is a second sealing surface. The lower surface of the movable valve plate between the communication end A and the communication end D is a third sealing surface, and the lower surface of the movable valve plate between the communication end B and the communication end C is a fourth sealing surface. The valve plate assembly has good pressure resistance, a simple sealing structure, small torque required during rotation, low overall cost, and is convenient for popularization.

Description

Technical Field

[0001] The present invention relates to a valve core, and particularly to a synchronous double-switch valve disc assembly and a synchronous double-switch valve core. Background Art

[0002] A switch valve core is a device for controlling water flow. When the switch valve core is closed, the inlet water pressure acts on the fixed valve disc, so that the moving valve disc is subjected to a force that separates it from the state of being in contact with the fixed valve disc under the action of the water pressure. The maximum water pressure value that the switch valve core can withstand in the closed state is its pressure resistance ability. There are requirements for the pressure resistance ability of the switch valve core in national standards. When the pressure resistance ability of the switch valve core is low, if the inlet water pressure is high, it will cause the moving valve disc and the fixed valve disc to separate and the switch valve core to burst, making the valve core unusable.

[0003] Chinese Patent No. 201820148045.7 discloses a synchronous double-switch valve core (hereinafter referred to as the comparative document), which includes a moving valve disc and a fixed valve disc. A water passing groove and a water passing through hole are provided on the moving valve disc, and the water passing through hole penetrates the moving valve disc, so that the water in the water passing through hole can be introduced to the outside of the moving valve disc, so that the upper surface of the moving valve disc can also be subjected to the action of the inlet water pressure, avoiding the situation that only the bottom surface of the moving valve disc is subjected to the inlet water pressure, and avoiding the separation phenomenon between the moving valve discs when the inlet water pressure is large, thereby improving the overall pressure resistance ability of the valve core.

[0004] In the above patent, after the water passing through hole is provided on the moving valve disc, when two diagonally arranged water inlet and outlet holes are connected to the water inlet pipe, the valve core can realize bidirectional water inlet. As shown in the comparative document Figure 7 At this time, it is in the closed state, 51a is communicated with the hot water inlet, and 51b is communicated with the cold water inlet. Since 51a and 51b are blocked by the lower surface of the moving valve disc, and the area of the lower surface of the moving valve disc opposite to 51a and 51b is small, the force generated by the moving valve disc under the action of the inlet water pressure is also small, and the valve core has good pressure resistance ability. When the whole valve core is installed in the valve core cavity by rotating counterclockwise by 90 degrees, 51d and 51c are respectively connected to the hot water inlet and the cold water inlet. Since 42b introduces the cold water inlet to the upper surface of the moving valve disc, the water pressure received by the moving valve disc is towards the fixed valve disc, so the valve core also has good pressure resistance ability. The valve core has good pressure resistance ability when the water flows in the forward direction (i.e., 51a and 51b for water inlet, and 51c and 51d for water outlet), and also has good pressure resistance ability when the water flows in the reverse direction (i.e., 51c and 51d for water inlet, and 51a and 51b for water outlet). Therefore, the valve core can realize bidirectional water inlet, and there is no need to pay special attention to the position of the water inlet and outlet during installation, which is convenient to use.

[0005] When two adjacent water inlet and outlet holes are connected to the water inlet pipe, the valve core can also have the function of water supply. As shown in the comparative document Figure 7As shown in the figure, when 51a is connected to the hot water inlet (or cold water inlet), and 51c is connected to the cold water inlet (or hot water inlet), in the closed state, 42b diverts the cold water inlet to the back of the movable valve plate. At this time, the entire movable valve plate is pressed against the fixed valve plate under the action of water pressure, and the valve core has good pressure resistance. When the movable valve plate rotates 45 degrees clockwise from the closed state, the hot water inlet is connected to the cold water inlet. Generally, the cold water inlet pressure is greater than the hot water inlet pressure, so cold water flows into the water tank of the solar water heater for water filling. When the movable valve plate rotates 45 degrees counterclockwise from the closed state, 51c is connected to 51b, and 51a is connected to 51d, for normal water outlet. However, since there is only one water passing hole on the movable valve plate, when the valve core is connected to the water inlet pipe at two adjacent water inlet and outlet holes, only the forward water inlet can withstand a large water inlet pressure, and the reverse water inlet cannot withstand a high water pressure.

[0006] Although this valve core has good pressure resistance, can realize the water filling function during adjacent water inlet, and has the function of two-way water inlet during diagonal water inlet, when in use, the water inlet is directly connected to the outside of the movable valve plate, resulting in at least one sealing ring being required to be provided on the outside of the upper end of the valve core housing, and at least one sealing ring is also required to be provided between the rotating shaft and the housing. The increase in the number of sealing rings will increase the probability of leakage and increase the torque during the rotation of the rotating shaft, making the overall cost of the valve core relatively high and the torque required during rotation relatively large.

[0007] Suppose, simply set the water passing hole 42b on the movable valve plate in the comparative document to a semi-closed water passing groove without changing the shape of the communication groove on the lower surface of the movable valve plate. Refer to the comparative document Figure 7 , if water enters through two diagonally arranged water inlet and outlet holes, when in the closed state of forward water inlet, that is, when 51a and 51b are for water inlet, the valve core then has good pressure resistance. When in the closed state of reverse water inlet, that is, when 51d and 51c are for water inlet, both the top surfaces of 42a and 42b will be subjected to the action of water inlet pressure, and the top surface areas of 42a and 42b are much larger than the cross-sectional areas of the water inlet and outlet holes, so the pressure resistance of the valve core is very poor at this time. This kind of valve core only has good pressure resistance during forward water inlet, and has poor pressure resistance during reverse water inlet.

[0008] At the same time, when adjacent water inlet occurs, if two adjacent water inlet and outlet holes are respectively connected to two water inlet pipes, when the valve core is in the closed state, there must be a top surface of a water passing groove subjected to the action of water inlet pressure. At this time, the force for the movable valve plate to separate from the fixed valve plate is relatively large, and the overall pressure resistance of the valve core is poor. When the water pressure is relatively large, the valve core will burst and the water filling function cannot be realized. Summary of the Invention

[0009] Aiming at the deficiencies of the existing technology, the first object of the present invention is to provide a synchronous double-switch valve plate assembly, which has good pressure resistance, a simple sealing structure, small torque required during rotation, can intake water bidirectionally and has a water supply function.

[0010] The above technical object of the present invention is achieved through the following technical solutions: A synchronous double-switch valve plate assembly includes a moving valve plate and a fixed valve plate. The lower surface of the moving valve plate is attached to the upper surface of the fixed valve plate. The fixed valve plate is provided with a first water inlet and outlet through hole, a second water inlet and outlet through hole, a third water inlet and outlet through hole, and a fourth water inlet and outlet through hole. The lower surface of the moving valve plate is provided with a first water passing groove and a second water passing groove.

[0011] The first water passing groove includes a communication end A and a communication end B. The part in the first water passing groove that communicates the communication end A and the communication end B is the first groove communication part. The second water passing groove includes a communication end C and a communication end D. The part in the second water passing groove that communicates the communication end C and the communication end D is the second groove communication part.

[0012] It also includes a first sealing surface, a second sealing surface, a third sealing surface, and a fourth sealing surface located on the lower surface of the moving valve plate.

[0013] In the open state, the first water passing groove communicates the first water inlet and outlet through hole and the second water inlet and outlet through hole, and the second water passing groove communicates the third water inlet and outlet through hole and the fourth water inlet and outlet through hole.

[0014] In the closed state, the sealing surfaces respectively block the corresponding one water inlet and outlet through hole, and the first groove communication part and the second groove communication part are wound around the outside of the water inlet and outlet through hole.

[0015] Through the above technical solutions, when the valve core is in the closed state, the four sealing surfaces respectively correspond to one water inlet and outlet through hole and block it, thereby cutting off the flow channel between the water inlet and outlet through holes. At this time, only the sealing surfaces facing the two water inlet through holes are affected by the water inlet pressure. The force-bearing area on the lower surface of the moving valve plate is small. Under the same water pressure, the force for the moving valve plate to separate from the fixed valve plate is also small, so that the valve core can withstand a higher water pressure when in the closed state. Since the force for the moving valve plate to separate from the fixed valve plate is small when the valve core is in the closed state, the two water inlet pipelines can be connected to the two diagonally arranged water inlet and outlet holes, or can be connected to two adjacent water inlet and outlet holes. When the two water inlet pipelines are connected to two adjacent water inlet and outlet through holes, the valve plate can also be used for water supply.

[0016] Since water does not enter the outside of the moving valve plate, there is no need to set a sealing ring outside the housing, and there is no need to set a sealing ring between the dial and the housing, thus simplifying the sealing structure and the torque required during rotation.

[0017] In addition, in the closed state, all four water inlet and outlet through holes are blocked by the blocking surface, and there are two seals between the water inlet and outlet through hole connected to the water inlet pipeline and the water inlet and outlet through hole connected to the water outlet pipeline, with better sealing effect, which can effectively prevent water leakage when the valve core is closed.

[0018] Moreover, since all the water inlet and outlet through holes are blocked, when the valve core intakes water, whether it is forward intake or reverse intake, it will not affect the pressure resistance and sealing performance of the valve core.

[0019] Preferably, the water inlet and outlet through hole one, the water inlet and outlet through hole two, the water inlet and outlet through hole three, and the water inlet and outlet through hole four are evenly distributed on the inner circumference of the circular ring belt of the fixed valve plate, and the communication end A, the communication end B, the communication end C, and the communication end D are evenly distributed on the inner circumference of the circular ring belt on the moving valve plate.

[0020] Through the above technical solution, the water inlet and outlet through hole one, the water inlet and outlet through hole two, the water inlet and outlet through hole three, and the water inlet and outlet through hole four are evenly distributed on the upper circumference of the fixed valve plate, making the distribution between the water inlet and outlet through holes on the fixed valve plate more reasonable and the overall structure more compact. The communication end A, the communication end B, the communication end C, and the communication end D are also evenly distributed on the circumference of the moving valve plate, which can enable the ends of the water passing grooves to communicate with the water inlet through holes and the water outlet through holes respectively, so as to connect the water inlet through holes and the water outlet through holes. The water inlet and outlet through hole one, the water inlet and outlet through hole two, the water inlet and outlet through hole three, and the water inlet and outlet through hole four do not necessarily need to be arranged within the same circular ring belt.

[0021] Preferably, the water passing groove one and the water passing groove two are symmetric about the diameter of the moving valve plate or symmetric about the center of the moving valve plate.

[0022] Through the above technical solution, the water passing groove one and the water passing groove two are arranged in this way, which can not only avoid interference between the two water passing grooves, but also ensure the width of the water passing grooves and the flow-through capacity of the valve core.

[0023] Preferably, the water passing groove one and / or the water passing groove two are in an arc shape or a V shape.

[0024] Through the above technical solution, the water passing groove one and the water passing groove two are in a V shape or an arc shape, making the overall structure of the water passing grooves relatively simple and convenient for processing.

[0025] Preferably, the width D1 at both ends of the water passing groove one and the water passing groove two is greater than the width D2 in the middle of the water passing groove.

[0026] Through the above technical solution, since the blocking surface one is located between the communication end A and the communication end B of the water passing groove one, when the water passing groove one is in an arc shape or a V shape, the blocking surface one is surrounded by the middle part of the water passing groove one. When the overall structure of the valve plate is relatively compact, a slightly smaller width in the middle of the water passing groove can increase the area of the blocking surface and the sealing length from the water inlet through hole to the communication groove, so as to ensure the water blocking effect.

[0027] Another object of the present invention is to provide a synchronous double-switch valve core, which includes a housing, a dial, and a base, and further includes the above-mentioned synchronous double-switch valve plate assembly. The moving valve plate and the fixed valve plate are pressed between the dial and the base. The moving valve plate is circumferentially fixed to the dial, and the fixed valve plate is circumferentially fixed to the base.

[0028] Preferably, the dial is provided with mounting holes, in which a spring and a limiting member are installed, and a limiting groove cooperating with the limiting member is provided on the inner side of the housing.

[0029] Through the above technical solution, the position of the dial can be determined more conveniently, thus facilitating use, and enabling the user to conveniently turn the dial to make the valve core in a closed state or an open state.

[0030] Preferably, the number of the limiting grooves is three, namely a fully open limiting groove, a closing state limiting member, and a maximum water supply state limiting groove.

[0031] Preferably, a limiting surface for restricting the rotation range of the dial is further provided on the inner side of the housing, and a limiting block is provided on the dial, and the limiting block is located between the two limiting surfaces.

[0032] Through the above technical solution, the rotation range of the dial can be restricted.

[0033] Preferably, the dial and the moving valve plate are circumferentially positioned by a first clamping groove and a first clamping tooth, the fixed valve plate and the base are circumferentially positioned by a second clamping groove and a second clamping tooth, and the base and the housing are connected by a buckle and a buckle groove.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows: By redesigning the shape and structure of the water passing grooves on the moving valve plate, when the valve core is in the closed state, the area of the moving valve plate under the action of the inlet water pressure is smaller, so that the force for the moving valve plate to separate from the fit is smaller, and the valve core can withstand higher water pressure when in the closed state. At the same time, when the valve core is in the closed state, the four sealing surfaces respectively seal the four water inlet and outlet through holes, so that double sealing can be achieved between the water inlet and outlet through hole connected to the water inlet pipe and the water inlet and outlet through hole connected to the water outlet pipe, improving the sealing effect. When in use, the two inlets can be arbitrarily connected to two water inlets and outlets, and the valve core can realize the switching function. There is no need to pay special attention to the circumferential position of the valve core during installation, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is an exploded view of Embodiment 1;

[0036] Figure 2 is a perspective view of the lower surface of the moving valve plate in Embodiment 1;

[0037] Figure 3Is the bottom view of the moving valve plate in Embodiment 1;

[0038] Figure 4 Is the perspective view of the upper surface of the fixed valve plate in Embodiment 1;

[0039] Figure 5 Is the top view of the fixed valve plate in Embodiment 1;

[0040] Figure 6 Is the schematic diagram of the relative positions of the moving valve plate and the fixed valve plate when in the closed state in Embodiment 1;

[0041] Figure 7 Is the schematic diagram of the relative positions of the moving valve plate and the fixed valve plate when in the open state in Embodiment 1;

[0042] Figure 8 Is the exploded view of the positioning seat in Embodiment 1;

[0043] Figure 9 Is the perspective view of the interior of the housing in Embodiment 1;

[0044] Figure 10 Is the bottom view of the housing in Embodiment 2;

[0045] Figure 11 Is the schematic diagram of the relative positions of the moving valve plate and the fixed valve plate when in the closed state in Embodiment 2;

[0046] Figure 12 Is the schematic diagram of the relative positions of the moving valve plate and the fixed valve plate when in the open state in Embodiment 2;

[0047] Figure 13 Is the schematic diagram of the relative positions of the moving valve plate and the fixed valve plate when in the water filling state in Embodiment 2;

[0048] Figure 14 Is the bottom view of the moving valve plate in Embodiment 3;

[0049] Figure 15 Is the schematic diagram of the relative positions of the moving valve plate and the fixed valve plate when the valve core is in the closed state in Embodiment 3;

[0050] Figure 16 Is the bottom view of the moving valve plate in Embodiment 4;

[0051] Figure 17 Is the schematic diagram of the relative positions of the moving valve plate and the fixed valve plate when the valve core is in the closed state in Embodiment 4;

[0052] Figure 18 Is the exploded view of Embodiment 5;

[0053] Figure 19 Is the bottom view of the housing in Embodiment 5.

[0054] Reference numerals: 1, housing; 2, base; 3, dial; 4, movable valve plate; 5, fixed valve plate; 6, first water inlet / outlet through hole; 7, second water inlet / outlet through hole; 8, third water inlet / outlet through hole; 9, fourth water inlet / outlet through hole; 10, first overflow tank; 11, second overflow tank; 13, communication end A; 14, communication end B; 15, communication end C; 16, communication end D; 17, first sealing surface; 18, second sealing surface; 19, third sealing surface; 20, fourth sealing surface; 21, mounting hole; 22, spring; 23, limiting member; 24, limiting groove; 25, limiting block; 26, limiting surface; 27, first clamping groove; 28, first clamping teeth; 29, second clamping groove; 30, second clamping teeth; 31, buckle; 32, buckle groove; 33, first annular region; 34, second annular region; 35, fully open limiting groove; 36, closed state limiting groove; 37, maximum water filling state limiting groove; 38, annular belt; 39, first groove communication part; 40, second groove communication part. Detailed implementation manners

[0055] The present invention will be further described in detail below with reference to the accompanying drawings.

[0056] This specific embodiment is only an interpretation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0057] Embodiment 1, a synchronous double-switch valve core

[0058] As Figure 1 shown, a synchronous double-switch valve core includes a housing 1 and a base 2. A dial 3 is installed between the housing 1 and the base 2, and a synchronous double-switch valve plate assembly is installed between the dial 3 and the base 2. The synchronous double-switch valve plate assembly includes a movable valve plate 4 and a fixed valve plate 5. The dial 3, the movable valve plate 4 and the fixed valve plate 5 are pressed between the housing 1 and the base 2. The lower end of the dial 3 is provided with first clamping teeth 28, and the upper end of the movable valve plate 4 is provided with a first clamping groove 27. The first clamping teeth 28 and the first clamping groove 27 cooperate with each other to circumferentially fix the movable valve plate 4 at the lower end of the dial 3. The upper surface of the base 2 is provided with second clamping teeth 30, and the lower end of the fixed valve plate 5 is provided with a second clamping groove 29. The second clamping teeth 30 and the second clamping groove 29 cooperate to circumferentially fix the fixed valve plate 5 on the base 2. Both the movable valve plate 4 and the fixed valve plate 5 are circular and are overlapped. The lower surface of the movable valve plate 4 is in sealing contact with the upper surface of the movable valve plate 4. A sealing ring is provided between the fixed valve plate 5 and the base 2, and a sealing ring is also installed on the lower surface of the base 2. The upper end of the dial 3 extends out from the middle of the upper end of the housing 1. By rotating the upper end of the dial 3, the movable valve plate 4 can be driven to rotate, so that a relative rotation occurs between the movable valve plate 4 and the fixed valve plate 5, thereby controlling the on / off of the water flow.

[0059] As Figure 4 and Figure 5As shown, water inlet / outlet through-holes 6, 7, 8, and 9 are evenly distributed in a circle on the fixed valve plate 5. Corresponding water inlet / outlet through-holes are provided on the base 2, and the water inlet / outlet through-holes are respectively communicated with water inlet / outlet through-hole 6, water inlet / outlet through-hole 7, water inlet / outlet through-hole 8, or water inlet / outlet through-hole 9. A water passing groove 10 and a water passing groove 11 are provided on the movable valve plate 4. As Figure 2 and Figure 3 shown, the water passing groove 10 includes a connecting end A 13 and a connecting end B 14. Between the connecting end A 13 and the connecting end B 14 is an arc-shaped groove connecting part 39. The groove connecting part 39 between the connecting end A 13 and the connecting end B 14 is close to the middle of the movable valve plate 4. The water passing groove 11 includes a connecting end C 15 and a connecting end D 16. The groove connecting part 40 between the connecting end C 15 and the connecting end D 16 is close to the middle of the movable valve plate 4. The width D1 at both ends of the water passing groove is greater than the width D2 of the groove connecting part. The connecting end A 13, the connecting end B 14, the connecting end C 15, and the connecting end D 16 and the water inlet / outlet through-holes 6, 7, 8, and 9 are all located within the same circular ring zone 38. The circular ring zone 38 is a virtual, geometrically circular ring-shaped area, and this circular ring-shaped area is concentric with the movable valve plate 4 and the fixed valve plate 5. The connecting end A 13, the connecting end B 14, the connecting end C 15, and the connecting end D 16 are evenly distributed in a circle on the lower surface of the movable valve plate 4. The connecting end A 13, the connecting end B 14, the connecting end C 15, and the connecting end D 16 are arranged in one-to-one correspondence with the water inlet / outlet through-holes 6, 7, 8, and 9.

[0060] The lower surface of the movable valve plate 4 between the connecting end A 13 and the connecting end B 14 is a sealing surface 17. The lower surface of the movable valve plate 4 between the connecting end C 15 and the connecting end D 16 is a sealing surface 18. The lower surface of the movable valve plate 4 between the connecting end A 13 and the connecting end D 16 is a sealing surface 19. The lower surface of the movable valve plate 4 between the connecting end B 14 and the connecting end C 15 is a sealing surface 20. The sealing surface 17, the sealing surface 18, the sealing surface 19, and the sealing surface 20 respectively seal the water inlet / outlet through-hole 6, the water inlet / outlet through-hole 8, the water inlet / outlet through-hole 7, and the water inlet / outlet through-hole 9.

[0061] As Figure 6As shown, the valve core is in the closed state at this time. The thick dash-dotted line is used to indicate the position of the water overflow groove on the lower surface of the moving valve plate 4. At this time, the first water inlet and outlet through hole 6 is located below the left of the fixed valve plate 5 and is connected to a water inlet pipeline, the second water inlet and outlet through hole 7 is located below the right of the fixed valve plate 5 and is connected to a water outlet pipeline, the third water inlet and outlet through hole 8 is located above the right of the fixed valve plate 5 and is connected to another water inlet pipeline, and the fourth water inlet and outlet through hole 9 is located above the left of the fixed valve plate 5 and is connected to another water outlet pipeline. It is set that the water inlet mode at this time is forward water inlet. At this time, the two water inlet pipelines are arranged diagonally. The communication end A13 and the communication end B14 of the first water overflow groove 10 are respectively located on both sides of the first water inlet and outlet through hole 6, and the first sealing surface 17 on the lower surface of the moving valve plate 4 between the communication end A13 and the communication end B14 closes the first water inlet and outlet through hole 6. The communication end C15 and the communication end D16 of the second water overflow groove 11 are respectively located on both sides of the third water inlet and outlet through hole 8, and the second sealing surface 18 on the lower surface of the moving valve plate 4 between the communication end C15 and the communication end D16 seals the third water inlet and outlet through hole 8. At the same time, the third sealing surface 19 between the communication end A13 and the communication end D16 seals the fourth water inlet and outlet through hole 9, and the fourth sealing surface 20 between the communication end C15 and the communication end B14 seals the second water inlet and outlet through hole 7, so that there are two seals between the first water inlet and outlet through hole 6 and the second water inlet and outlet through hole 7, and there are also two seals between the third water inlet and outlet through hole 8 and the fourth water inlet and outlet through hole 9.

[0062] In addition, since all the water inlet and outlet through holes are closed when the valve core is closed, the valve core can both inlet water forward and inlet water backward. The reverse water inlet is relative to the above-mentioned forward water inlet, that is, the first water inlet pipeline is connected to the second water inlet and outlet through hole 7, the second water inlet pipeline is connected to the fourth water inlet and outlet through hole 9, the first water outlet pipeline is connected to the first water inlet and outlet through hole 6, and the second water outlet pipeline is connected to the third water inlet and outlet through hole 8. At this time, the valve core can also realize the function of controlling the on-off of water flow and has good pressure resistance.

[0063] As Figure 7 shown, when the dial 3 drives the moving valve plate 4 to rotate counterclockwise to Figure 7 the state, the first water overflow groove 10 connects the first water inlet and outlet through hole 6 and the second water inlet and outlet through hole 7, the second water overflow groove 11 connects the third water inlet and outlet through hole 8 and the fourth water inlet and outlet through hole 9, and the valve core is in the fully open state.

[0064] For the convenience of use, a limiting groove 24 is provided in the housing 1. An installation hole 21 is provided on the dial 3. A spring 22 and a limiting member 23 are installed radially in the installation hole 21. The end of the limiting member 23 can cooperate with the limiting groove 24 to determine the relative position between the moving valve plate 4 and the fixed valve plate 5. The number of the limiting grooves 24 is two. When the limiting member 23 is stuck into the limiting groove 24, the valve core is in the closed or fully open state. At the same time, a limiting block 25 is also provided on the other side of the dial 3, and two limiting surfaces 26 are provided inside the housing 1. The limiting block 25 is located between the two limiting surfaces 26, and the limiting surfaces 26 limit the rotation angle of the dial 3.

[0065] In addition, it should be specifically noted that the synchronous double-switch valve plate assembly can also be directly installed inside the faucet body for use. At this time, the movable valve plate 4 and the fixed valve plate 5 are installed inside the valve core cavity of the faucet body. The lower surface of the fixed valve plate 5 directly presses against the bottom surface of the valve core cavity of the faucet body and the seal. The upper surface of the movable valve plate 4 abuts against the dial 3. The upper end of the dial 3 is fixed inside the valve core cavity by the gland, and the upper end of the dial 3 passes through the gland. By rotating the end of the dial 3 passing through the upper end of the gland, the movable valve plate 4 can be driven to rotate, so that relative rotation occurs between the fixed valve plate 5 and the fixed valve plate 5, realizing the control of the water flow on and off.

[0066] Embodiment 2, a synchronous double-switch valve core

[0067] As Figures 10 to 13 shown, the main difference between Embodiment 2 and Embodiment 1 lies in the number of the limiting grooves 24 on the housing 1. The number of the limiting grooves 24 in Embodiment 2 is three, namely the closed-state limiting groove 36, the fully open limiting groove 35 and the maximum water intake state limiting groove 37.

[0068] During use, the other two adjacent water inlet and outlet through holes are connected to the water inlet pipe. As Figure 12 shown, the water inlet and outlet through hole 1 6 is connected to a water inlet pipeline, and the water inlet and outlet through hole 2 7 is communicated with a water outlet channel; the water inlet and outlet through hole 4 9 is connected to another water inlet pipeline, and the water inlet and outlet through hole 3 8 is communicated with another water outlet pipeline. It is set that the valve core is in the forward water inlet state at this time. The water inlet and outlet through holes connected by the two water inlet pipelines are arranged adjacent to each other, and the water inlet and outlet through holes connected by the two water outlet pipelines are also arranged adjacent to each other.

[0069] As Figure 11 shown, when the valve core is in the closed state, all four water inlet and outlet through holes are in the blocked state. When the movable valve plate 4 rotates counterclockwise by 45 degrees from the closed state of the valve core, as Figure 12 shown, the water passing groove 1 10 communicates the water inlet and outlet through hole 1 6 and the water inlet and outlet through hole 2 7, and the water passing groove 2 11 communicates the water inlet and outlet through hole 3 8 and the water inlet and outlet through hole 4 9.

[0070] When the movable valve plate 4 rotates clockwise from the closed state of the valve core, as Figure 13 shown, the water inlet and outlet through hole 1 6 and the water inlet and outlet through hole 4 9 are communicated, and the water inlet and outlet through hole 2 7 and the water inlet and outlet through hole 3 8 are communicated. At this time, the valve core is in the water intake state. For a non-pressure-bearing solar water heater, cold water can be injected into the water tank of the solar water heater through this valve core at this time.

[0071] At the same time, since the valve core has a symmetric structure, it also has the ability of reverse water inlet, that is, when water enters through the second water inlet and outlet through-hole 7 and exits through the first water inlet and outlet through-hole 6; when water enters through the third water inlet and outlet through-hole 8 and exits through the fourth water inlet and outlet through-hole 9, it can also have the water supply function, and can realize the normal on-off of water flow and have good pressure resistance.

[0072] Embodiment 3, a synchronous double-switch valve core,

[0073] As Figure 14 shown, the difference between Embodiment 3 and Embodiment 1 lies in the shape of the water passing grooves on the movable valve plate 4. The first water passing groove 10 and the second water passing groove 11 in Embodiment 3 are both V-shaped. Figure 15 It is a schematic diagram of the relative positions of the movable valve plate 4 and the fixed valve plate 5 when the valve core is in the closed state.

[0074] When only the switch function needs to be realized, the two water inlet pipelines are communicated with the first water inlet and outlet through-hole 6 and the third water inlet and outlet through-hole 8 arranged diagonally, the first water outlet pipeline is communicated with the second water inlet and outlet through-hole 7, and the second water outlet pipeline is communicated with the fourth water inlet and outlet through-hole 9. Water can be discharged when the movable valve plate 4 rotates clockwise or counterclockwise by 45 degrees.

[0075] When the switch and water supply functions need to be realized simultaneously, as long as the two water inlet pipelines are respectively communicated with the adjacent first water inlet and outlet through-hole 6 and the fourth water inlet and outlet through-hole 9, and then the first water outlet pipeline is communicated with the second water inlet and outlet through-hole 7, and the second water outlet pipeline is communicated with the third water inlet and outlet through-hole 8, the water supply or water passing function can be realized when the movable valve plate 4 rotates.

[0076] Embodiment 4, a synchronous double-switch valve core,

[0077] As Figures 16 to 17 shown, the differences between Embodiment 4 and Embodiment 1 lie in the sizes of the water inlet and outlet through-holes on the fixed valve plate 5 and the shape of the water passing grooves on the movable valve plate 4. The diameters of the water inlet and outlet through-holes on the fixed valve plate 5 are slightly smaller than those in Embodiment 1 and are closer to the center of the fixed valve plate 5. At the same time, as Figure 16 shown, the first water passing groove 10 and the second water passing groove 11 on the movable valve plate 4 are arc-shaped, and the openings of the arcs face the center of the movable valve plate 4.

[0078] As Figure 17 shown, at this time the valve core is in the closed state, and the two water inlet channels are respectively connected to the first water inlet and outlet through-hole 6 and the third water inlet and outlet through-hole 8 of the valve core, the first water outlet pipeline is communicated with the second water inlet and outlet through-hole 7, and the second water outlet pipeline is communicated with the fourth water inlet and outlet through-hole 9. At this time, the valve core does not have the water supply function.

[0079] If the water supply function needs to be realized, as long as the two water inlet pipelines are respectively communicated with the first water inlet and outlet through-hole 6 and the fourth water inlet and outlet through-hole 9, so that the second water outlet through-hole 7 is communicated with one water outlet pipeline, and the third water outlet through-hole 8 is communicated with the other water outlet pipeline.

[0080] Embodiment 5, a synchronous double-switch valve core,

[0081] As Figure 18 and 19 shown, the difference between Embodiment 5 and Embodiment 2 is that in Embodiment 5, the spring 22 and the limiting member 23 are longitudinally arranged, and the opening of the mounting hole 21 faces the top of the housing 1. After the spring 22 and the limiting member 23 are installed in the mounting hole 21, the limiting member 23 abuts against the top surface of the inner wall of the housing 1 under the action of the spring 22. At the same time, the limiting groove 24 is also located at the top of the inner wall of the housing 1. The limiting groove 24 includes a fully open limiting groove 35, a closed state limiting groove 36, and a maximum water filling state limiting groove 37. When the limiting member 23 is engaged in the above-mentioned limiting groove 24, the valve core is in a fully open state, a closed state, and a maximum water filling state respectively.

[0082] The above description is only an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A synchronous double-switch valve plate assembly, comprising a movable valve plate (4) and a fixed valve plate (5). The lower surface of the movable valve plate (4) is in contact with the upper surface of the fixed valve plate (5). The fixed valve plate (5) is provided with a first water inlet / outlet through hole (6), a second water inlet / outlet through hole (7), a third water inlet / outlet through hole (8) and a fourth water inlet / outlet through hole (9). The lower surface of the movable valve plate (4) is provided with a first water passing groove (10) and a second water passing groove (11). It is characterized in that: Both the first water passing groove (10) and the second water passing groove (11) do not penetrate through the movable valve plate (4) and are in a semi-closed state. The first water passing groove (10) includes a communication end A (13) and a communication end B (14). The part in the first water passing groove (10) that communicates the communication end A (13) and the communication end B (14) is a first groove communication part (39). The second water passing groove (11) includes a communication end C (15) and a communication end D (16). The part in the second water passing groove (11) that communicates the communication end C (15) and the communication end D (16) is a second groove communication part (40). The width D1 at both ends of the first water passing groove (10) and the second water passing groove (11) is greater than the width D2 of the first groove communication part (39) and the second groove communication part (40). It also includes a first sealing surface (17), a second sealing surface (18), a third sealing surface (19) and a fourth sealing surface (20) located on the lower surface of the movable valve plate (4). In the open state, the first water passing groove (10) communicates the first water inlet / outlet through hole (6) and the second water inlet / outlet through hole (7), and the second water passing groove (11) communicates the third water inlet / outlet through hole (8) and the fourth water inlet / outlet through hole (9). In the closed state, the first sealing surface (17), the second sealing surface (18), the third sealing surface (19) and the fourth sealing surface (20) respectively block the corresponding first water inlet / outlet through hole (6), the second water inlet / outlet through hole (7), the third water inlet / outlet through hole (8) and the fourth water inlet / outlet through hole (9). The first groove communication part (39) and the second groove communication part (40) are wound around the outside of the first water inlet / outlet through hole (6), the second water inlet / outlet through hole (7), the third water inlet / outlet through hole (8) and the fourth water inlet / outlet through hole (9). The first water passing groove (10) and the second water passing groove (11) are arc-shaped, and the opening of the arc faces the outer circumference of the movable valve plate (4).

2. The synchronous double-switch valve plate assembly according to claim 1, characterized in that: The first water inlet / outlet through hole (6), the second water inlet / outlet through hole (7), the third water inlet / outlet through hole (8) and the fourth water inlet / outlet through hole (9) are evenly distributed on the inner circumference of the annular belt (38) of the fixed valve plate (5). The communication end A (13), the communication end B (14), the communication end C (15) and the communication end D (16) are evenly distributed on the inner circumference of the annular belt (38) on the movable valve plate.

3. The synchronous double-switch valve plate assembly according to claim 2, characterized in that: The first water passing groove (10) and the second water passing groove (11) are symmetrically arranged with respect to the diameter of the movable valve plate (4) or symmetrically arranged with respect to the center of the circle of the movable valve plate (4).

4. A synchronous double-switch valve core, comprising a housing (1), a dial (3), and a base (2), characterized in that: It also includes the synchronous double-switch valve plate assembly according to any one of claims 1 to 3. The movable valve plate (4) and the fixed valve plate (5) are pressed between the dial (3) and the base (2). The movable valve plate (4) is circumferentially fixed to the dial (3), and the fixed valve plate (5) is circumferentially fixed to the base (2).

5. A synchronous double-switch spool according to claim 4, characterized in that: The dial (3) is provided with a mounting hole (21), in which a spring (22) and a limiting member (23) are installed. A limiting groove (24) which cooperates with the limiting member (23) is arranged on the inner side of the housing (1).

6. The synchronous double-switch valve core according to claim 5 is characterized in that: The number of the limiting grooves (24) is three, namely a fully open limiting groove (35), a closing state limiting member (36) and a maximum water filling state limiting groove (37).

7. The synchronous double-switch spool valve according to claim 4, wherein: A limiting surface (26) for restricting the rotation range of the dial (3) is arranged on the inner side of the housing (1). A limiting block (25) is arranged on the dial (3), and the limiting block (25) is located between two limiting surfaces (26).

8. The synchronous double-switch valve core according to claim 5, characterized in that: Circumferential positioning between the dial (3) and the movable valve plate (4) is carried out through a first clamping groove (27) and a first clamping tooth (28). Circumferential positioning between the fixed valve plate (5) and the base (2) is carried out through a second clamping groove (29) and a second clamping tooth (30). The base (2) and the housing (1) are connected through a buckle (31) and a buckle groove (32).

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