Intelligent water-saving valve

Abstract

The invention discloses an intelligent water-saving valve, and relates to the technical field of valves, the intelligent water-saving valve comprises a valve body internally provided with an overflowing channel, the valve body is provided with two valve plates, a negative pressure channel and a liquid level monitoring mechanism, and the two valve plates are fixed in parallel; the two valve plates are rotationally connected to the valve body so as to block or open the overflowing channel. The negative pressure channel is integrally constructed on the valve body, and when the overflowing channel is opened by the two valve plates, the negative pressure channel is closed; when the overflowing channel is blocked by the two valve plates, the negative pressure channel is communicated with a gap between the two valve plates; the liquid level monitoring mechanism is used for monitoring the liquid level in the negative pressure channel. According to the intelligent water-saving valve provided by the invention, the overflowing channel can be blocked or opened through the two valve plates which are fixed in parallel, and when one valve plate has the problem of insufficient sealing performance, the other valve plate can ensure normal use of the valve.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to an intelligent water-saving valve. Background Art

[0002] A valve is a device used to control the flow of fluid. The flow of fluid in a pipeline can be controlled by adjusting the opening of the valve. There are many types of valves, such as ball valves or butterfly valves, manual valves or automatic valves. In actual applications, in order to achieve environmental protection and water-saving functions, some valves are also equipped with leak detection components to monitor the sealing condition of the valve.

[0003] For example, the patent document with the application publication number CN115539656A and the application publication date December 30, 2022, and the name of the patent document is "A water-saving valve with leak detection and self-sealing function", which includes a valve body, a liquid inlet and a liquid outlet are provided on the valve body, and an actuator is provided on the top of the valve body. A conical cavity is provided between the liquid inlet and the liquid outlet, and a main valve seat and a sub-valve seat are respectively provided on the upper and lower sides of the conical cavity. The patent has a simple structure, can effectively self-monitor leakage and automatically seal, has market prospects, and is suitable for promotion and application.

[0004] Most of the valves in the prior art are single-plate structures. When there is a problem of insufficient sealing between a part of the single plate and the valve body, water leakage will occur at the valve, which will cause a waste of water resources. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent water-saving valve to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An intelligent water-saving valve comprises a valve body with a flow passage structured therein, wherein the valve body is provided with:

[0008] Two valve plates are provided, the two valve plates are fixed in parallel, and the two valve plates are rotatably connected to the valve body to block or open the flow passage;

[0009] A negative pressure channel is integrally constructed on the valve body, and when the two valve plates open the flow channel, the negative pressure channel is closed; when the two valve plates block the flow channel, the negative pressure channel is connected to the gap between the two valve plates;

[0010] The liquid level monitoring mechanism is used to monitor the liquid level in the negative pressure channel.

[0011] The above-mentioned intelligent water-saving valve has a piston slidably connected in the negative pressure channel, a first elastic member for forcing the piston away from the flow channel is provided in the negative pressure channel, and also includes a resistance member for pushing the piston against one end of the negative pressure channel close to the flow channel.

[0012] In the above-mentioned intelligent water-saving valve, a driving rod is rotatably connected to the valve body, and the driving rod is fixed to two valve plates.

[0013] In the above-mentioned intelligent water-saving valve, a driving disc is fixed on the driving rod, a connecting column is fixed on the driving disc, a driving plate is slidably connected to the valve body, and a horizontal groove adapted to the connecting column is constructed on the driving plate.

[0014] In the above-mentioned intelligent water-saving valve, a connecting rod is fixed on the piston, a connecting plate is fixed on the connecting rod, a wedge-shaped surface is constructed on the driving plate, and the connecting plate is located on the moving stroke of the wedge-shaped surface.

[0015] In the above-mentioned intelligent water-saving valve, the driving plate first forces the piston to be in the negative pressure channel close to one end of the flow channel through the wedge surface, and then forces the two valve plates to open the flow channel through the horizontal groove.

[0016] In the above-mentioned intelligent water-saving valve, a vertical groove connected to the horizontal groove is constructed on the driving plate.

[0017] In the above-mentioned intelligent water-saving valve, a first partition is fixed between the two valve plates, and a second partition is fixed in the negative pressure channel.

[0018] In the above-mentioned intelligent water-saving valve, when the two valve plates block the flow channel, the first partition plate and the second partition plate overlap to separate the gap between the two valve plates and the negative pressure channel into two symmetrical parts.

[0019] In the above-mentioned intelligent water-saving valve, pistons, first elastic members and liquid level monitoring mechanisms are provided on both sides of the second partition.

[0020] In the above technical scheme, the present invention provides an intelligent water-saving valve, which can block or open the flow channel through two valve plates fixed in parallel, and the sealing effect of the two valve plates blocking the flow channel at the same time is better. When one valve plate has insufficient sealing, the other valve plate can ensure the normal use of the valve; when the two valve plates open the flow channel, the negative pressure channel is closed, and the fluid in the flow channel flows normally; when the two valve plates block the flow channel, the negative pressure channel and the gap between the two valve plates are connected. If the sealing of the valve plate is good, the negative pressure channel cannot extract the liquid outside the valve plate, and the liquid level in the negative pressure channel does not change. If the sealing of the valve plate is insufficient, the fluid outside the valve plate can be extracted through the negative pressure channel to change the liquid level in the negative pressure channel. In this way, the water leakage of the valve can be monitored by the liquid level monitoring mechanism to avoid water leakage at the valve as much as possible and cause waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a partition structure provided in yet another embodiment of the present invention;

[0024] Figure 3 Another embodiment of the present invention provides Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 A schematic diagram of the structure of an extension portion provided in yet another embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a horizontal trough structure provided by yet another embodiment of the present invention;

[0027] Figure 6 A schematic diagram of a vertical slot structure provided in yet another embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the structure of a driving plate provided in yet another embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the structure of a first baffle provided in another embodiment of the present invention;

[0030] Fig. 9Another embodiment of the present invention provides Figure 8 The enlarged structural diagram at B in the middle;

[0031] Fig.10 A schematic diagram of the structure of a second partition provided in another embodiment of the present invention;

[0032] Fig.11 A schematic diagram of a through hole structure provided by another embodiment of the present invention;

[0033] Fig.12 Another embodiment of the present invention provides Fig.11 Enlarged structural diagram at point C in the middle.

[0034] Description of reference numerals:

[0035] 1. flow passage; 2. valve body; 3. valve plate; 4. negative pressure passage; 5. arc groove; 6. piston; 7. first elastic member; 8. drive rod; 9. drive disk; 10. connecting column; 11. drive plate; 12. horizontal groove; 13. extension part; 14. drive groove; 15. connecting rod; 16. connecting plate; 17. wedge surface; 18. vertical groove; 19. first partition; 20. second partition; 21. connecting part; 22. through hole; 23. blocking plate; 24. trigger rod; 25. second elastic member; 26. brake rod; 27. brake groove; 28. wedge block. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] Reference Figure 1-12 An embodiment of the present invention provides an intelligent water-saving valve, comprising a valve body 2 with an overflow channel 1 internally constructed therein, the valve body 2 being provided with a valve plate 3, a negative pressure channel 4 and a liquid level monitoring mechanism, two valve plates 3 being provided, the two valve plates 3 being fixed in parallel, the two valve plates 3 being rotatably connected to the valve body 2 to block or open the overflow channel 1; the negative pressure channel 4 being integrally constructed on the valve body 2, when the two valve plates 3 open the overflow channel 1, the negative pressure channel 4 is closed; when the two valve plates 3 block the overflow channel 1, the negative pressure channel 4 is connected to the gap between the two valve plates 3; the liquid level monitoring mechanism is used to monitor the liquid level in the negative pressure channel 4.

[0038] Specifically, valves in the prior art generally include a valve body, a valve plate (valve flap), a valve stem, a sealing ring and a drive structure, wherein the drive structure can be manual or automatic. Intelligent valves in the prior art generally use an automatic drive structure (such as a reduction motor structure) to drive the valve stem and valve plate to rotate in the valve body to open or close the valve. The innovation of the embodiment of the present invention is that an arc groove 5 connected to the flow channel 1 is constructed in the valve body 2, and the two valve plates 3 are fixed to each other and rotatably connected in the arc groove 5. When the two valve plates 3 are rotated to a state nearly perpendicular to the flow channel 1, the outer walls of the two valve plates 3 fit the inner walls of the arc groove 5, and the flow channel 1 and the arc groove 5 are blocked. When the two valve plates 3 are rotated to a state parallel to the flow channel 1, the opening degree of the flow channel 1 is the largest; in this way, the sealing performance of the valve structure can be improved by the two valve plates 3, and the problem of insufficient sealing between one valve plate 3 and the valve body 2 can be avoided as much as possible, which will affect the operation of the valve; the negative pressure channel 4 is located at the top of the valve body 2 and is connected to the arc groove 5. There is a certain negative pressure inside the negative pressure channel 4 (a negative pressure environment can be created by extracting air by a vacuum pump or the like). When the two valve plates 3 open the flow channel 1, the negative pressure channel 4 is in a closed state (a movable block can be provided in the negative pressure channel 4 to pass the movable block to open the negative pressure channel 1). Control the opening or closing of the negative pressure channel 4), at this time, the fluid in the flow channel 1 and the arc groove 5 circulates normally and will not enter the negative pressure channel 4; when the two valve plates 3 block the flow channel 1, the negative pressure channel 4 switches to an open state, at this time, the gap between the negative pressure channel 4 and the two valve plates 3 is connected, and the negative pressure in the negative pressure channel 4 can suck the liquid between the two valve plates 3 and the arc groove 5. If both valve plates 3 have no problem of insufficient sealing, the negative pressure channel 4 cannot extract the liquid into the negative pressure channel 4. If one of the two valve plates 3 has a problem of insufficient sealing, the liquid on the outside of the valve plate 3 can enter between the two valve plates 3, so that the negative pressure channel 4 can extract the liquid in the two valve plates 3 into the negative pressure channel 4. In this way, the liquid level in the negative pressure channel 4 can be monitored by a liquid level monitoring mechanism (the liquid level monitoring structure can use a liquid level sensor in the prior art, not shown in the figure, and will not be repeated here) to determine whether there is a problem of insufficient sealing at the two valve plates 3.

[0039] An intelligent water-saving valve provided by an embodiment of the present invention can block or open a flow channel 1 through two valve plates 3 fixed in parallel, and the sealing effect of the two valve plates 3 blocking the flow channel 1 at the same time is better. When one valve plate 3 has a problem of insufficient sealing, the other valve plate 3 can ensure the normal use of the valve; when the two valve plates 3 open the flow channel 1, the negative pressure channel 4 is closed, and the fluid in the flow channel 1 flows normally; when the two valve plates 3 block the flow channel 1, the negative pressure channel 4 and the gap between the two valve plates 3 are connected. If the sealing at the valve plate 3 is good, the negative pressure channel 4 cannot extract the liquid outside the valve plate 3, and the liquid level in the negative pressure channel 4 does not change. If the sealing at the valve plate 3 is insufficient, the fluid outside the valve plate 3 can be extracted through the negative pressure channel 4, so that the liquid level in the negative pressure channel 4 changes. In this way, the water leakage of the valve can be monitored by the liquid level monitoring mechanism to avoid the waste of water resources caused by water leakage at the valve as much as possible.

[0040] In another embodiment provided by the present invention, further, a piston 6 is slidably connected in the negative pressure channel 4, and a first elastic member 7 for forcing the piston 6 away from the flow channel 1 is provided in the negative pressure channel 4, and also includes a resistance member for abutting the piston 6 against the negative pressure channel 4 at one end close to the flow channel 1. Specifically, the negative pressure channel 4 is constructed as a cylindrical structure as a whole, and a dynamic sealing structure is provided between the piston 6 and the inner wall of the negative pressure channel 4, and the piston 6 has a certain sliding stroke in the negative pressure channel 4, and the end of the piston 6 close to the flow channel 1 is constructed as an arc surface adapted to the arc groove 5. When the piston 6 is at the end of the negative pressure channel 4 close to the flow channel 1, the end of the piston 6 can be smoothly connected to the inner wall of the arc groove 5 to avoid interference between the valve plate 3 and the piston 6 as much as possible; the first elastic member 7 can adopt a spring structure in the prior art, one end of which is fixed at the far end of the piston 6. One end of the piston 6 is away from the flow channel 1, and the other end is fixed on the inner wall of the negative pressure channel 4, so as to force the piston 6 away from the flow channel 1 through the first elastic member 7; the resistance member can select the electric push rod structure in the prior art, one end of which is fixed on the negative pressure channel 4, and the other end is in resistance with the piston 6. When the electric push rod is extended, the piston 6 can be forced to overcome the elastic force of the first elastic member 7 and move to the end of the negative pressure channel 4 close to the flow channel 1. When the electric push rod is contracted, the piston 6 loses the resistance. At this time, the piston 6 can be forced to stay away from the flow channel 1 through the first elastic member 7. With such arrangement, when the two valve plates 3 open the flow channel 1, the piston 6 is pressed against the end of the negative pressure channel 4 close to the flow channel 1 by the resistance member, so that the negative pressure channel 4 is closed by the piston 6. At this time, the fluid can pass through the valve normally without entering the negative pressure channel 4; when the two valve plates 3 close the flow channel 1, the resistance member releases the resistance to the piston 6, so that the piston 6 can have a tendency to move away from the flow channel 1 under the action of the first elastic member 7, that is, the piston 6 has a tendency to extract the liquid between the two valve plates 3 through the negative pressure channel 4. If there is no leakage problem in the two valve plates 3, the piston 6 cannot pump the liquid between the two valve plates 3. If there is a leakage problem in the valve plate 3, the piston 6 can extract the liquid between the two valve plates 3 into the negative pressure channel 4 (at the same time, the liquid outside the valve plate 3 is supplemented between the two valve plates 3). The advantage is that, in this embodiment, the liquid level monitoring mechanism can select the displacement sensor in the prior art, and the position of the piston 6 can be monitored by the displacement sensor to determine the liquid level in the negative pressure channel 4, and then monitor whether the two valve plates 3 are leaking.

[0041] Furthermore, the valve body 2 is rotatably connected with a driving rod 8, and the driving rod 8 is fixed to two valve plates 3. The driving rod 8 is fixed with a driving disk 9, and the driving disk 9 is fixed with a connecting column 10. The valve body 2 is slidably connected with a driving plate 11, and the driving plate 11 is configured with a horizontal groove 12 adapted to the connecting column 10. Specifically, the driving rod 8 is similar to the valve stem structure in the prior art, and a dynamic sealing structure is provided between the driving rod 8 and the valve body 2. The driving rod 8 rotates on the valve body 2 to drive the two parallel fixed valve plates 3 to rotate synchronously; the end of the driving rod 8 away from the valve plate 3 is exposed from the valve body 2 and is fixed to the driving disk 9, and the connecting column 10 is fixed on the bottom wall of the driving disk 9 (the side of the driving disk 9 close to the valve body 2); an extension portion 13 is constructed on the valve body 2, and the driving plate 11 is slidably connected to the extension portion 13, and the connecting column 10 is inserted in the horizontal groove 12. When the driving plate 11 slides on the valve body 2, the connecting column 10 can be forced to move through the inner wall of the horizontal groove 12, thereby driving the driving disk 9, the driving rod 8 and the valve plate 3 to rotate through the connecting column 10, and when the driving disk 9 rotates, the connecting column 10 will slide relatively in the horizontal groove 12, so that the driving valve plate 3 can be driven to rotate in the process of the driving plate 11 sliding on the valve body 2, thereby controlling the opening and closing state of the valve. A driving groove 14 is constructed on the extension portion 13, and the driving groove 14 is arranged along the axial direction of the flow channel 1. The driving plate 11 is slidably connected in the driving groove 14. A motor-driven screw structure (not shown) can be arranged on the extension portion 13 to drive the driving plate 11 to slide smoothly in the driving groove 14 through the screw driving structure, thereby driving the valve plate 3 to open and close smoothly. The motor-driven screw structure is a prior art and will not be described in detail here.

[0042] As an alternative to the above-mentioned electric push rod acting as a resistance member, preferably, a connecting rod 15 is fixed to the piston 6, a connecting plate 16 is fixed to the connecting rod 15, a wedge surface 17 is constructed on the driving plate 11, and the connecting plate 16 is located on the moving stroke of the wedge surface 17. The driving plate 11 first forces the piston 6 to be at one end of the negative pressure channel 4 close to the flow channel 1 through the wedge surface 17, and then forces the two valve plates 3 to open the flow channel 1 through the horizontal groove 12. Specifically, an opening is constructed at one end of the negative pressure channel 4 away from the flow channel 1, a connecting rod 15 is inserted in the opening and a first elastic member 7 is sleeved on the connecting rod 15, an end of the connecting rod 15 located in the negative pressure channel 4 is fixed to the piston 6, and an end located outside the negative pressure channel 4 is fixed to the connecting plate 16; when the piston 6 is located at one end of the negative pressure channel 4 close to the flow channel 1, the top wall of the connecting plate 16 is located below the driving plate 11; when the two valve plates 3 and the flow channel 1 are perpendicular, the flow channel 1 can be blocked by the two valve plates 3, and at this time, the two valve plates 3 have a certain closed rotation range (such as a rotation range of 5-10 degrees) in the arc groove 5, and in this rotation range, the two valve plates 3 maintain blocking of the flow channel 1; in the process of the driving plate 11 moving along the driving groove 14 to drive the two valve plates 3 to rotate, the bottom wall of the driving plate 11 contacts the top wall of the connecting plate 16 to force the piston 6 to be at one end of the negative pressure channel 4 close to the flow channel 1, and when the driving plate 11 drives the two valve plates 3 to rotate When the valve plates 3 rotate to block the flow channel 1, the driving plate 11 and the connecting plate 16 are about to separate, and then the driving plate 11 drives the two valve plates 3 to continue to rotate in the closed rotation range, so that the driving plate 11 can be separated from the connecting plate 16, so that the piston 6 can have a tendency to extract the liquid between the two valve plates 3 when the flow channel 1 is blocked; on the contrary, when the driving plate 11 drives the valve plates 3 to rotate in the opposite direction, the driving plate 11 first forces the connecting plate 16 and the piston 6 to reset through the wedge surface 17 (the piston 6 resets to the end of the negative pressure channel 4 close to the flow channel 1, and during the process of the piston 6 resetting, the two valve plates 3 rotate within the closed rotation range; when there is no water leakage problem on the valve plates 3, there may be air between the two valve plates 3, and the piston 6 may be displaced a small distance, and at this time the piston 6 can be forced to reset through the wedge surface 17), and then drives the two valve plates 3 to open the flow channel 1 (in the process, the bottom wall of the driving plate 11 maintains resistance to the top wall of the connecting plate 16). The advantage of such a configuration is that, by providing the wedge surface 17 and the connecting plate 16, at the beginning of the stroke in which the driving plate 11 drives the two valve plates 3 to open the flow channel 1, the bottom wall of the driving plate 11 is used to resist the connecting plate 16, thereby limiting the position of the piston 6. At the end of the stroke in which the driving plate 11 drives the two valve plates 3 to block the flow channel 1, the driving plate 11 and the connecting plate 16 are separated to release the restriction on the position of the piston 6, so that the piston 6 can have a tendency to extract the liquid between the two valve plates 3 under the action of the first elastic member 7, and then judge whether there is water leakage at the two valve plates 3 through the liquid level monitoring mechanism.

[0043] As an alternative to the above-mentioned closed rotation range, preferably, the drive plate 11 is configured with a vertical groove 18 connected to the horizontal groove 12. Specifically, the horizontal groove 12 and the vertical groove 18 are perpendicular to each other, and the intersection of the two is smoothly connected. The sliding direction of the vertical groove 18 and the drive plate 11 is parallel, that is, the vertical groove 18 is arranged along the axial direction of the flow channel 1; in this embodiment, the rotation range of the drive rod 8 is 0-90 degrees; Figure 5 As shown, when the driving plate 11 is at one end of the driving groove 14, the valve plate 3 is in a state parallel to the flow channel 1 to open the valve. At this time, the connecting column 10 is located in the middle position of the horizontal groove 12 (as shown in FIG. Figure 6 As shown in the figure); when the driving plate 11 moves toward the other end of the driving groove 14, the inner wall of the horizontal groove 12 can force the connecting column 10 to move, so as to drive the driving disk 9, the driving rod 8 and the two valve plates 3 to rotate. During the process, the connecting column 10 moves relatively in the horizontal groove 12 (the connecting column 10 is relatively close to the driving groove 14 and relatively far away from the vertical groove 18); until the connecting line between the connecting column 10 and the driving rod 8 is perpendicular to the axis of the driving groove 14, the connecting column 10 moves relatively to the end of the horizontal groove 12 away from the vertical groove 18; then the driving plate 11 continues to move, and the connecting column 10 is relatively close to the vertical groove 18 in the horizontal groove 12, until the valve plate 3 rotates 90 degrees to transfer the overcurrent When the channel 1 is blocked, the connecting column 10 moves relatively into the vertical groove 18, and then when the driving plate 11 continues to move toward the other end of the driving groove 14, the connecting column 10 moves relatively in the vertical groove 18. At this time, the position of the connecting column 10 can be limited by the inner wall of the vertical groove 18 to avoid the angle of the driving disk 9 and the driving rod 8 from being offset as much as possible; when the connecting column 10 moves relatively in the vertical groove 18, the driving plate 11 and the connecting plate 16 are gradually separated, until the driving plate 11 moves to the other end of the driving groove 14, the connecting column 10 moves relatively to the end of the vertical groove 18 away from the horizontal groove 12, and the driving plate 11 and the connecting plate 16 are separated to release the resistance to the piston 6 (such as Figure 7 The advantage of such a configuration is that, by providing the horizontal groove 12 and the vertical groove 18, the driving plate 11 can drive the valve plate 3 to rotate 90 degrees during the sliding process to close the flow channel 1, and after driving the valve plate 3 to rotate 90 degrees, the driving plate 11 can keep the angle of the valve plate 3 unchanged and separate from the connecting plate 16, so as to monitor whether the valve is leaking through the piston 6 and other structures; on the contrary, when the driving plate 11 moves in the reverse direction, it can first resist the connecting plate 16, and then drive the valve plate 3 to reverse 90 degrees to open the flow channel 1, so as to adapt to the operation of the valve and the negative pressure channel 4.

[0044] In the above embodiment, the piston 6 and other structures can only monitor whether there is water leakage at the two valve plates 3, and it is impossible to determine which valve plate 3 is leaking. In another embodiment provided by the present invention, further, a first partition 19 is fixed between the two valve plates 3, and a second partition 20 is fixed in the negative pressure channel 4. When the two valve plates 3 block the flow channel 1, the first partition 19 and the second partition 20 overlap to separate the gap between the two valve plates 3 and the negative pressure channel 4 into two symmetrical parts. The piston 6, the first elastic member 7 and the liquid level monitoring mechanism are arranged on both sides of the second partition 20. Specifically, a connecting portion 21 is constructed on the top of the first partition 19, and the two opposite sides of the connecting portion 21 are respectively fixed to the two valve plates 3, and the driving rod 8 is fixed to the top of the connecting portion 21, so that the two valve plates 3 and the first partition 19 are parallel to each other and fixed to each other, so that the two valve plates 3 and the first partition 19 are driven by the driving rod 8 to rotate synchronously in the arc groove 5; the second partition 20 is fixed in the negative pressure channel 4, which can divide the negative pressure channel 4 into two parts, and accordingly, two pistons 6 are slidably connected in the negative pressure channel 4 to block the separated negative pressure channel 4 through the two pistons 6; two first elastic members 7 are symmetrically arranged in the negative pressure channel 4, so as to drive the corresponding pistons 6 away from the flow channel 1 through the two first elastic members 7, and the two pistons 6 are fixed with connecting rods 15 and connecting plates 16, and the two connecting plates 16 are both located in the negative pressure channel. The second partition plate 20 is perpendicular to the flow channel 1, and the end of the second partition plate 20 close to the flow channel 1 is smoothly connected to the arc groove 5. When the two valve plates 3 rotate to a position perpendicular to the flow channel 1, the valve is in a closed state. At this time, the outer wall of the first partition plate 19 is in contact with the inner wall of the arc groove 5, and the first partition plate 19 and the second partition plate 20 are overlapped. In this way, the gap between the two valve plates 3 and the negative pressure channel 4 can be divided into two symmetrical parts by the first partition plate 19 and the second partition plate 20.

[0045] The advantage of such a setting is that when the two valve plates 3 and the first partition plate 19 are rotated to a position perpendicular to the flow channel 1 (that is, when the valve is closed), the two valve plates 3 and the first partition plate 19 are in contact with the inner wall of the arc groove 5, so that a triple partition can be formed, further improving the sealing of the valve; when the valve is closed, the two first elastic members 7 and the two pistons 6 can be used to suck the two sides of the first partition plate 19 respectively. If the two pistons 6 do not move, it means that the sealing of the two valve plates 3 and the first partition plate 19 is normal. If only one piston 6 is in the negative pressure channel, the sealing of the two valve plates 3 and the first partition plate 19 is normal. 4, it means that the valve plate 3 on the side corresponding to the piston 6 has a water leakage problem. If both pistons 6 are displaced in the negative pressure channel 4, it means that both valve plates 3 have a water leakage problem or the first partition plate 19 and one valve plate 3 have a water leakage problem (the situation where both pistons 6 are displaced generally occurs after the situation where one piston 6 is displaced. If the two pistons 6 are displaced directly, it may be that the first partition plate 19 leaks first, and then one of the valve plates 3 leaks); in this way, the corresponding components can be replaced or repaired during maintenance.

[0046] Furthermore, a through hole 22 is constructed on the first partition 19, and a sealing plate 23 for sealing the through hole 22 is slidably connected to the first partition 19; when the through hole 22 is open, the liquid level monitoring mechanism can be used to determine whether the two valve plates 3 are leaking; when the through hole 22 is closed, the two liquid level monitoring mechanisms can be used to determine whether a single valve plate 3 is leaking. Specifically, a linear drive structure can be provided on the first partition 19 to drive the sealing plate 23 to close or open the through hole 22; when the valve is closed and the through hole 22 is opened, the spaces on both sides of the first partition 19 are connected together through the through hole 22. At this time, if there is no leakage problem at both valves, the two pistons 6 in the negative pressure channel 4 will not be displaced. If there is a leakage problem in the two valves (any one or both), the two pistons 6 in the negative pressure channel 4 can synchronously suck the liquid between the two valve plates 3, so as to judge whether the two valve plates 3 (any one or both) are leaking or not through a liquid level monitoring mechanism (which can be a liquid level sensor for monitoring the liquid level in the negative pressure channel 4, or a displacement sensor for monitoring the position of the piston 6); when the valve is closed and the through hole 22 is closed, the gap between the negative pressure channel 4 and the two valve plates 3 is divided into two parts. At this time, the two pistons 6 have a tendency to suck the liquid in the corresponding space. If one piston 6 is displaced, it means that the corresponding valve plate 3 has a leakage problem, so as to judge whether a single valve plate 3 is leaking or not through the liquid level monitoring mechanism.

[0047] As an alternative to the above-mentioned linear drive structure driving the blocking plate 23 to close or open the through hole 22, preferably, a connecting groove is constructed in the driving rod 8 along its axial direction, the connecting groove passes through the connecting portion 21, and a trigger rod 24 is slidably connected in the connecting groove, and a dynamic sealing structure is arranged between the trigger rod 24 and the connecting groove, and one end of the trigger rod 24 extends to the first partition plate 19 and is fixed to the blocking plate 23; a second elastic member 25 is arranged in the connecting groove, and the second elastic member 25 can select a spring structure in the prior art, one end of which is fixed to the inner wall of the connecting groove, and the other end is fixed to the end of the trigger rod 24, so as to force the trigger rod 24 to move to one side of the through hole 22 through the second elastic member 25, thereby driving the blocking plate 23 to block the through hole 22; a movable groove connected to the connecting groove is constructed on the driving rod 8, and a brake rod 26 is hinged in the movable groove, and a brake groove 27 is constructed on the trigger rod 24. When the second elastic member 25 is squeezed to make the blocking plate 23 open the through hole 22, the brake rod 26 corresponds to the brake groove 27. At this time, the brake rod 26 is embedded in the brake groove 27 to limit the positions of the trigger rod 24 and the blocking plate 23, so that the through hole 22 remains in an open state; the end of the brake rod 26 away from the trigger rod 24 extends to the top of a connecting plate 16 (when the valve is closed), and a wedge block 28 is constructed on the connecting plate 16. When the connecting plate 16 and the corresponding piston 6 are away from the flow channel 1 along the negative pressure channel 4, the wedge block 28 can abut against the end of the brake rod 26 away from the brake groove 27, so as to force the brake rod 26 to rotate and drive the other end to move out of the brake groove 27, thereby releasing the restriction of the brake rod 26 on the trigger rod 24, so that the trigger rod 24 moves along the connecting groove under the action of the second elastic member 25, and then drives the blocking plate 23 to block the through hole 22.

[0048] Such arrangement enables the through hole 22 to be in an open state under normal conditions, and the brake rod 26 and the trigger rod 24 can both rotate with the drive rod 8. When not affected by other external forces, the trigger rod 24 is always restricted by the brake rod 26, so that the blocking plate 23 is in a state of opening the through hole 22; when the valve is closed, the two valve plates 3 rotate to a position perpendicular to the flow channel 1. At this time, the end of the brake rod 26 away from the drive rod 8 rotates with the drive rod 8 to above the wedge block 28. When the through hole 22 is open, the two pistons 6 have a tendency to suck the liquid between the two valve plates 3. If any valve plate 3 leaks, the two pistons 6 will move away from the flow channel 1 under the action of the corresponding first elastic member 7. At this time, the liquid level monitoring mechanism detects the displacement of the piston 6 and issues a warning (the displacement sensor can send an electrical signal, which can be converted into other warning signals. This is a prior art and will not be repeated here). With the displacement of the two pistons 6, the two connecting plates 16 will also move away from the flow channel 1 accordingly, wherein one connecting plate 16 The wedge block 28 on the plate 16 will resist the brake rod 26 to force the brake rod 26 to rotate and disengage from the brake groove 27 (the force of the first elastic member 7 on the piston 6 is greater than the friction between the brake rod 26 and the brake groove 27, so that the first spring can force the brake rod 26 to disengage from the brake groove 27 when driving the piston 6 away from the flow channel 1). When the brake rod 26 disengages from the brake groove 27, the trigger rod 24 will approach the through hole 22 under the action of the second elastic member 25, thereby driving the blocking plate 23 to block the through hole 22 (in the process, the trigger rod 24 will enter between the two valve plates 3, and the piston 6 will extract the liquid between the two valve plates 3, so that the inflow and outflow of liquid or solid between the two valve plates 3 is balanced); after the through hole 22 is switched to the closed state, the two pistons 6 have a tendency to continue to move away from the flow channel 1 under the action of the corresponding first elastic member 7. At this time, the water leakage at the two valve plates 3 can be judged by the displacement of the two pistons 6 (the judgment method can be basically the same as in the above embodiment).

[0049] In the above embodiment, the two connecting plates 16 are arranged in parallel along the moving direction of the driving plate 11, that is, when the driving plate 11 moves, it will successively conflict with the two connecting plates 16 or be separated from the two connecting plates 16. After the valve is closed, the driving plate 11 needs to be separated from the two connecting plates 16 before the water leakage at the two valve plates 3 can be monitored; in this embodiment, after the driving plate 11 drives the two valve plates 3 to rotate to a state perpendicular to the flow channel 1, the driving plate 11 continues to move and will first be separated from the connecting plate 16 with the wedge block 28. After the driving plate 11 is separated from the connecting plate 16 with the wedge block 28, the driving plate 11 can stop running. At this time, the connecting plate 16 and the piston 6 corresponding to the wedge block 28 can extract the liquid between the two valve plates 3 under the action of the corresponding first elastic member 7. If the piston 6 is displaced in the negative pressure channel 4, it means that there is water leakage in the two valve plates 3. At this time, the connecting plate 16 constructed with the wedge block 28 will move away from the flow channel 1 with the corresponding piston 6 to force the brake rod 26 to release the restriction on the trigger rod 24. In the process of the piston 6 being displaced and driving the trigger rod 24 to operate, the driving plate 11 continues to move (the driving plate 11 can operate based on the liquid level monitoring mechanism on the corresponding side of the wedge block 28, and can also be driven by other instructions. This is the prior art and will not be repeated here) to separate from the other connecting plate 16, so that after the blocking plate 23 blocks the through hole 22, the two pistons 6 can have a tendency to move away from the flow channel 1 under the corresponding first elastic member 7. In this way, the water leakage at the two valve plates 3 can be judged by the subsequent operation of the two pistons 6. The advantage is that, by providing mechanisms such as the trigger rod 24 and the brake rod 26, the valve can only monitor whether the two valve plates 3 are leaking during normal operation, so as to reduce the steps of its operation. Until the valve detects that there is a leakage problem at the two valve plates 3, the brake rod 26 is passively deflected to release the restriction on the trigger rod 24, so that the through hole 22 is passively blocked, and then the subsequent displacement of the two pistons 6 is used to determine which valve plate 3 (or the second partition plate 20) is leaking, which is convenient for subsequent maintenance.

[0050] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An intelligent water-saving valve, comprising a valve body having an internal flow channel, characterized in that: The valve body is provided with: Two valve plates are provided, the two valve plates are fixed in parallel, and the two valve plates are rotatably connected to the valve body to block or open the flow passage; A negative pressure channel is integrally constructed on the valve body, and when the two valve plates open the flow channel, the negative pressure channel is closed; when the two valve plates block the flow channel, the negative pressure channel is connected to the gap between the two valve plates; The liquid level monitoring mechanism is used to monitor the liquid level in the negative pressure channel.

2. The intelligent water-saving valve according to claim 1, characterized in that: A piston is slidably connected in the negative pressure channel. A first elastic member for forcing the piston away from the flow channel is arranged in the negative pressure channel, and also includes a resistance member for forcing the piston to resist one end of the negative pressure channel close to the flow channel.

3. The intelligent water-saving valve according to claim 2, characterized in that: A driving rod is rotatably connected to the valve body, and the driving rod is fixed to two valve plates.

4. The intelligent water-saving valve according to claim 3, characterized in that: A driving disc is fixed on the driving rod, a connecting column is fixed on the driving disc, a driving plate is slidably connected to the valve body, and a horizontal groove adapted to the connecting column is constructed on the driving plate.

5. The intelligent water-saving valve according to claim 4, characterized in that: A connecting rod is fixed on the piston, a connecting plate is fixed on the connecting rod, a wedge-shaped surface is constructed on the driving plate, and the connecting plate is located on the moving stroke of the wedge-shaped surface.

6. The intelligent water-saving valve according to claim 5, characterized in that: The driving plate first forces the piston to be located at one end of the negative pressure channel close to the flow channel through the wedge surface, and then forces the two valve plates to open the flow channel through the horizontal groove.

7. The intelligent water-saving valve according to claim 6, characterized in that: The driving plate is provided with a vertical slot communicating with the horizontal slot.

8. The intelligent water-saving valve according to claim 7, characterized in that: A first partition plate is fixed between the two valve plates, and a second partition plate is fixed in the negative pressure channel.

9. The intelligent water-saving valve according to claim 8, characterized in that: When the two valve plates block the flow channel, the first partition plate and the second partition plate overlap to separate the gap between the two valve plates and the negative pressure channel into two symmetrical parts.

10. The intelligent water-saving valve according to claim 9, characterized in that: A piston, a first elastic member and a liquid level monitoring mechanism are arranged on both sides of the second partition.

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