Zero pressure loss control valve
By controlling the position of the core column through a slider and magnet system, the problem of existing valves being unable to open under low or zero pressure conditions is solved, achieving zero-pressure-loss water flow and stable valve control, thus improving valve performance.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- FUJIAN ORALGARDEN TECHNOLOGY CO LTD
- Filing Date
- 2024-12-18
- Publication Date
- 2026-06-25
AI Technical Summary
The existing valves cannot effectively utilize the collected rainwater for irrigation when the water pressure in the inlet chamber is low or zero, resulting in poor valve performance.
The position of the core column is controlled by a slider and magnet system. The repulsion and attraction of the magnets, combined with the rebound force of the diaphragm, enable zero pressure loss control of the valve opening and closing, ensuring that water can flow even under low or zero pressure conditions.
It enables water flow under low or zero pressure conditions, avoids water pressure loss, and provides stable and convenient control of valve opening and closing, thereby improving valve performance.
Smart Images
Figure CN2024140139_25062026_PF_FP_ABST
Abstract
Description
A zero-pressure-loss control valve Technical Field
[0001] This invention relates to the field of valve technology, and more specifically to a zero-pressure-loss control valve. Background Technology
[0002] Valves are control components in fluid transport systems, and have functions such as shutting off, regulating, guiding, preventing backflow, stabilizing pressure, diverting flow, or overflowing and relieving pressure.
[0003] As shown in Figure 1, a valve currently used in the market includes a valve body 1, a cover 2, a diaphragm 3, and a core 4. The valve body 1 has an inlet chamber 11 and an outlet chamber 12. The cover 2 is fixedly connected to the valve body 1 and has an assembly cavity 21. The diaphragm 3 is installed in the assembly cavity 12 and has a drain hole 31 and an inlet hole 32. The inlet chamber 11 communicates with the assembly cavity 21 through the inlet hole 32, and the assembly cavity 21 communicates with the outlet chamber 12 through the drain hole 31. The core 4 is slidably connected to the cover 2. The position of the core 4 is changed by an electromagnet.
[0004] When the water in the inlet chamber has a certain pressure, as the core moves towards the diaphragm, the core blocks the diaphragm's drain hole, and the diaphragm's sealing surface covers the outlet chamber's opening. The water in the inlet chamber flows from the diaphragm's inlet hole to the assembly chamber. The water pressure on both sides of the diaphragm is equal, so the water cannot flow into the outlet chamber, and the valve is in the closed state. When the core detaches from the diaphragm, the water in the assembly chamber flows from the diaphragm's drain hole to the outlet chamber. The water pressure in the assembly chamber decreases, and the water pressure in the inlet chamber pushes the diaphragm, causing the diaphragm's sealing surface to leave the outlet chamber's opening. The water in the inlet chamber flows directly into the outlet chamber, and the valve is in the open state.
[0005] However, in situations where the water pressure in the inlet chamber is low, or the water pressure at the inlet chamber opening is zero, such as when using a rainwater collection bucket to collect rainwater on rainy days and use the collected rainwater for outdoor watering on sunny days, such as watering lawns or greenhouse vegetables, this can save water resources. The rainwater collection bucket is connected to the inlet chamber of the valve body, and the outlet chamber of the valve body is connected to the pipe of the spraying device. When watering is not needed, the valve is closed, the core column blocks the drain hole of the diaphragm, and the sealing surface of the diaphragm covers the opening of the outlet chamber. When watering is needed, the valve is opened, and the core column disengages from the diaphragm. However, when the water level in the rainwater collection bucket is low, the water pressure in the valve's inlet chamber is low, or even zero. In this case, the sealing surface of the diaphragm covers the opening of the outlet chamber, and when water reaches the opening of the inlet chamber, it cannot push open the diaphragm, so the water cannot flow into the outlet chamber, and therefore watering cannot be carried out. Only when the water level in the rainwater collection tank rises to a certain height and the water pressure at the inlet of the inlet chamber reaches a certain pressure can the water in the inlet chamber push open the diaphragm and flow into the outlet chamber.
[0006] The valve in Figure 1 requires water pressure to open the diaphragm, allowing water to flow from the inlet chamber to the outlet chamber. When the rainwater collection tank collects relatively little rainwater, resulting in low water pressure in the inlet chamber or even zero pressure at the inlet opening, the valve in Figure 1 cannot be used for outdoor irrigation with the collected rainwater, indicating poor valve performance. Therefore, there is an urgent need in this technical field for a zero-pressure-loss control valve. Technical issues
[0007] The technical problem to be solved by the present invention is to provide a zero-pressure-loss control valve. Technical solutions
[0008] This invention is achieved as follows: a zero-pressure-loss control valve, comprising:
[0009] Valve body, cover, diaphragm, core, inner magnet, first outer magnet, second outer magnet, support and slider;
[0010] The valve body has an inlet chamber and an outlet chamber;
[0011] The cover is fixedly connected to the valve body, and the cover has an assembly cavity;
[0012] The diaphragm is installed in the assembly cavity. The diaphragm has a drain hole and a water inlet hole. The water inlet cavity communicates with the assembly cavity through the water inlet hole, and the assembly cavity communicates with the water outlet cavity through the drain hole.
[0013] The core column is slidably connected to the cover, and one end of the core column is fixedly connected to the inner magnet;
[0014] The support is fixedly connected to the cover, the slider is slidably connected to the support, the support has a switching area, and the first external magnet and the second external magnet are respectively fixedly disposed at both ends of the slider;
[0015] When the first external magnet moves to the switching area, the first external magnet repels the inner magnet, the core pushes the diaphragm, so that the sealing surface of the diaphragm covers the opening of the water outlet cavity, the other end of the core blocks the drain hole, and the diaphragm is in a deformed state.
[0016] When the second outer magnet moves to the switching area, the second outer magnet attracts the inner magnet, the core detaches from the diaphragm, the diaphragm returns to its initial shape, a gap is formed between the sealing surface of the diaphragm and the opening of the water outlet cavity, and the water inlet cavity communicates with the water outlet cavity through the gap.
[0017] Furthermore, the diaphragm has a conical boss at its center, the conical boss facing the core post, the drain hole located on the conical boss, and a curved portion at the edge of the diaphragm, the groove of the curved portion facing the assembly cavity.
[0018] Furthermore, a compression spring is installed between the core and the cover.
[0019] Furthermore, it also includes a transmission device and a power source device, wherein the power source device is connected to the slider through the transmission device.
[0020] Furthermore, the transmission device includes a gear, a rack, and a rotating shaft. The rack is fixedly connected to the slider, the gear meshes with the rack, the center of the gear is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft is rotatably connected to the support.
[0021] Furthermore, the power source device is a motor, and the output shaft of the motor is connected to the rotating shaft via a coupling.
[0022] Furthermore, it also includes a control panel, which is electrically connected to the motor. Beneficial effects
[0023] Compared with the prior art, the beneficial effects of the technical solution of the present invention are as follows:
[0024] After the core column detaches from the diaphragm, the diaphragm returns to its initial shape due to its own elasticity. The diaphragm in its initial shape does not cover the opening of the water outlet chamber. At this time, a gap is formed between the sealing surface of the diaphragm and the opening of the water outlet chamber. When the water pressure in the inlet chamber is low or the water pressure at the opening of the inlet chamber is zero, the water in the inlet chamber does not need to push the diaphragm open and does not lose water pressure. It flows directly through the gap to the water outlet chamber. The slider is pushed to change the position of the first and second external magnets in the switching area. In conjunction with the internal magnet, the position of the core column is conveniently and stably controlled to realize the valve's switching function. The zero-pressure-loss control valve of the present invention has good performance. Attached Figure Description
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] Figure 1 is a schematic diagram of the internal structure of a valve in the background art.
[0027] Figure 2 is a schematic diagram of the internal structure of the zero-pressure-loss control valve of the present invention.
[0028] Figure 3 is a schematic diagram of the gap position between the membrane and the water outlet cavity in this invention.
[0029] Figure 4 is a schematic diagram of the sealing surface of the diaphragm covering the opening of the water outlet cavity in this invention.
[0030] Figure 5 is a front plan view of the diaphragm in this invention.
[0031] Figure 6 is a cross-sectional view along the AA direction in Figure 5.
[0032] Figure 7 is a schematic diagram of the external structure of the zero pressure loss control valve of the present invention.
[0033] Figure 8 is a schematic diagram of the connection between the valve body, rainwater collection tank, and spraying device in this invention.
[0034] Reference numerals: Valve body 1; Inlet chamber 11; Outlet chamber 12; Cover 2; Assembly chamber 21; Diaphragm 3; Drain hole 31; Inlet hole 32; Gap 33; Conical boss 34; Bend 35; Core column 4; Compression spring 41; Inner magnet 5; First outer magnet 6; Second outer magnet 7; Support 8; Slider 9; Transmission device 10; Gear 101; Rack 102; Power source device 20; Rainwater collection tank 30; Spraying device 40. Embodiments of the present invention
[0035] This invention provides a zero-pressure-loss control valve, which overcomes the shortcomings of the prior art where water pressure needs to be consumed to push the diaphragm open when the valve is opened, resulting in poor performance. It realizes that when the valve is opened, the water in the inlet chamber does not need to push the diaphragm open and does not need to consume water pressure, but flows directly through the gap to the outlet chamber, which conveniently and stably controls the position of the core column and realizes the valve's opening and closing function, achieving better technical performance.
[0036] The overall concept of the technical solution of this invention is as follows:
[0037] The slider is used to change the position of the first and second outer magnets. When the first outer magnet moves to the switch area, the first outer magnet and the inner magnet repel each other. The inner magnet and the core column move towards the diaphragm at the same time. The core column pushes the diaphragm so that the sealing surface of the diaphragm covers the opening of the water outlet. The other end of the core column blocks the drain hole of the diaphragm. The diaphragm is in a deformed state. At this time, the valve is in the closed state.
[0038] When the valve needs to be opened, the slider is used to move the second outer magnet to the switching area. The second outer magnet attracts the inner magnet, and the inner magnet and the core column move towards the switching area at the same time. The core column detaches from the diaphragm, and the diaphragm returns to its initial shape by its own elastic force. The diaphragm in its initial shape does not cover the opening of the water outlet chamber. At this time, a gap is formed between the sealing surface of the diaphragm and the opening of the water outlet chamber. Even if the water pressure in the inlet chamber is low, or the water pressure at the opening of the inlet chamber is zero, the water in the inlet chamber still flows to the water outlet chamber through the gap. The water in the inlet chamber does not need to push the diaphragm open, and there is no loss of water pressure, i.e., zero pressure loss.
[0039] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0040] Referring to Figures 1 to 8, preferred embodiments of the present invention are shown.
[0041] A zero-pressure-loss control valve, comprising:
[0042] Valve body 1, cover 2, diaphragm 3, core column 4, inner magnet 5, first outer magnet 6, second outer magnet 7, support 8 and slider 9;
[0043] The valve body 1 has an inlet chamber 11 and an outlet chamber 12;
[0044] The cover 2 is fixedly connected to the valve body 1, and the cover 2 has an assembly cavity 21;
[0045] The diaphragm 3 is installed in the assembly cavity 21. The diaphragm 3 has a drain hole 31 and a water inlet hole 32. The water inlet cavity 11 communicates with the assembly cavity 21 through the water inlet hole 32. The assembly cavity 21 communicates with the water outlet cavity 12 through the drain hole 31.
[0046] The core post 4 is slidably connected to the cover 2, and one end of the core post 4 is fixedly connected to the inner magnet 5;
[0047] The support 8 is fixedly connected to the cover 2, the slider 9 is slidably connected to the support 8, the support 8 has a switching area, and the first external magnet 6 and the second external magnet 7 are respectively fixedly disposed at both ends of the slider 9;
[0048] When the first outer magnet 6 moves to the switch area, the first outer magnet 6 and the inner magnet 5 repel each other, the core column 4 pushes the diaphragm 3, so that the sealing surface of the diaphragm 3 covers the opening of the water outlet cavity 12, the other end of the core column 4 blocks the drain hole 31, and the diaphragm 3 is in a deformed state.
[0049] When the second outer magnet 7 moves to the switch area, the second outer magnet 7 attracts the inner magnet 5, the core 4 detaches from the diaphragm 3, the diaphragm 3 returns to its initial shape, and a gap 33 is formed between the sealing surface of the diaphragm 3 and the opening of the water outlet cavity 12. The water inlet cavity 11 communicates with the water outlet cavity 12 through the gap 33.
[0050] The beneficial effect of this technical solution is that after the core column 4 detaches from the diaphragm 3, the diaphragm 3 recovers its initial shape by its own elastic force. The diaphragm 3 in its initial shape does not cover the opening of the water outlet chamber 12. At this time, the sealing surface of the diaphragm 3 and the opening of the water outlet chamber 12 form a gap 33. When the water pressure in the water inlet chamber 11 is low or the water pressure at the opening of the water inlet chamber 11 is zero, the water in the water inlet chamber 11 does not need to push the diaphragm 3 and does not need to lose water pressure. It flows directly through the gap 33 to the water outlet chamber 12. The slider 9 is pushed to change the position of the first external magnet 6 and the second external magnet 7 in the switching area. With the cooperation of the inner magnet 5, the position of the core column 4 is conveniently and stably controlled to realize the valve's switching function. The zero pressure loss control valve of the present invention has good performance.
[0051] In this invention, the positions of the first outer magnet 6 and the second outer magnet 7 are changed by the slider 9. When the first outer magnet 6 moves to the switching area, the first outer magnet 6 and the inner magnet 5 repel each other, closing the valve. When the first outer magnet 6 remains in the position of the switching area, the valve remains closed. When the second outer magnet 7 moves to the switching area, the second outer magnet 7 and the inner magnet 5 attract each other, opening the valve. When the second outer magnet 7 remains in the position of the switching area, the valve remains open, thus conveniently and stably realizing the valve's switching function.
[0052] Furthermore, the diaphragm 3 has a conical boss 34 at its center, the conical boss facing the core post 4, the drain hole 31 is located on the conical boss 34, and the diaphragm 3 has a curved portion 35 at its edge, the groove of the curved portion 35 facing the assembly cavity 21.
[0053] The beneficial effect of this technical solution is that the diaphragm 3 with its unique structure, the conical boss 34 and the curved part 35 all help the diaphragm 3 to restore its initial shape by its own elasticity.
[0054] Furthermore, a compression spring 41 is installed between the core post 4 and the cover 2.
[0055] The beneficial effect of this technical solution is that when the first outer magnet 6 and the inner magnet 5 repel each other, the compression spring 41 returns to its original position, and the other end of the core column 4 blocks the drainage hole 31 of the diaphragm 3. When the second outer magnet 7 and the inner magnet 5 attract each other, the core column 4 detaches from the diaphragm 3, and the compression spring 41 is in a compressed state. The compression spring 41, when returning to its original position, helps the core column 4 to completely block the drainage hole 31.
[0056] Furthermore, it also includes a transmission device 10 and a power source device 20, wherein the power source device 20 is connected to the slider 9 through the transmission device 10.
[0057] The beneficial effect of this technical solution is that it automatically changes the position of slider 9, thereby automatically switching the valve's on / off state.
[0058] Furthermore, the transmission device 10 includes a gear 101, a rack 102, and a rotating shaft. The rack 102 is fixedly connected to the slider 9, the gear 101 is meshed with the rack 102, the center of the gear 101 is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft is rotatably connected to the support 8.
[0059] The beneficial effect of this technical solution is that the rotational motion of the gear 101 is converted into the horizontal motion of the rack 102, which facilitates the adjustment of the position of the slider 9.
[0060] Furthermore, the power source device 20 is a motor, and the output shaft of the motor is connected to the rotating shaft via a coupling.
[0061] The beneficial effect of this technical solution is that when the output shaft of the motor rotates in the forward direction, the gear 101 is driven by the shaft, and the slider 9 moves to the left by means of the rack 102; when the output shaft of the motor rotates in the reverse direction, the slider 9 moves to the right. For example, when the slider 9 moves to the switching area with the second outer magnet 7, the second outer magnet 7 attracts the inner magnet 5, and the core 4 detaches from the diaphragm 3. At this time, even if the motor is de-energized, the slider 9 remains stationary, the second outer magnet 7 remains in the switching area, and the valve remains open.
[0062] Furthermore, it also includes a control panel, which is electrically connected to the motor.
[0063] The beneficial effect of this technical solution is that the forward and reverse states of the motor can be adjusted via the control panel, thereby changing the positions of the first and second external magnets. The control panel has buttons and knobs for setting the valve opening and closing times. The control panel is a product of existing technology.
[0064] How this invention works:
[0065] The rainwater collection tank 30 is connected to the water inlet chamber 11 of the valve body 1, and the water outlet chamber 12 of the valve body 1 is connected to the pipe of the spraying device 40. When watering is not required, the first outer magnet 6 is moved to the switching area. The opposite surfaces of the first outer magnet 6 and the inner magnet 5 are like polarities and repel each other, causing the core column 4 to move towards the diaphragm 3. The core column 4 blocks the drain hole 31 of the diaphragm 3, and the sealing surface of the diaphragm 3 covers the opening of the water outlet chamber 12. This is the closed valve state. When the collected rainwater needs to be used for irrigation, the second outer magnet 7 is moved to the switching area. The opposite surfaces of the second outer magnet 7 and the inner magnet 5 are attracted by opposite polarities, causing the core column 4 to detach from the diaphragm 3. The diaphragm 3 returns to its initial shape by its own elastic force. The diaphragm 3 in its initial shape does not cover the opening of the water outlet chamber 12. At this time, the sealing surface of the diaphragm 3 and the opening of the water outlet chamber 12 form a gap 33. The water from the rainwater collection tank 30 flows to the water inlet chamber 11 of the valve body 1. Even if the rainwater collection tank 30 collects less rainwater on rainy days, the water level in the rainwater collection tank 30 is low, and the water pressure in the water inlet chamber 11 is low, or the water pressure at the opening of the water inlet chamber 11 is zero, since the water in the water inlet chamber 11 does not need to push the diaphragm 3, there is no need to lose water pressure. It flows directly through the gap 33 to the water outlet chamber 12 of the valve body 1. Finally, the collected rainwater flows to the spraying device 40 for irrigation.
[0066] When the water in the inlet chamber 11 has a certain pressure, when the core column 4 moves towards the diaphragm 3, the core column 4 blocks the drain hole 31 of the diaphragm 3, and the sealing surface of the diaphragm 3 covers the opening of the outlet chamber 12. The water in the inlet chamber 11 flows from the inlet hole 32 of the diaphragm 3 to the assembly chamber 21. The water pressure on both sides of the diaphragm 3 is equal, and the water cannot flow to the outlet chamber 12, so the valve is in the closed state. When the core column 4 detaches from the diaphragm 3, the water in the assembly chamber 21 flows from the drain hole 31 of the diaphragm 3 to the outlet chamber. 12. The diaphragm 3 returns to its initial shape by its own elasticity. The diaphragm 3 in its initial shape does not cover the opening of the water outlet chamber 12. At this time, the sealing surface of the diaphragm 3 and the opening of the water outlet chamber 12 form a gap 33. The water in the water inlet chamber 11 flows directly to the water outlet chamber 12. The water in the water inlet chamber 11 can also flow from the water inlet hole 32 of the diaphragm 3 to the assembly chamber 21, and then from the assembly chamber 21 to the water outlet chamber 12 through the drain hole 31 of the diaphragm 3. The water pressure on both sides of the diaphragm 3 is equal, and the valve is in the open state.
[0067] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. A zero-pressure-loss control valve, characterized in that, include: Valve body, cover, diaphragm, core, inner magnet, first outer magnet, second outer magnet, support and slider; The valve body has an inlet chamber and an outlet chamber; The cover is fixedly connected to the valve body, and the cover has an assembly cavity; The diaphragm is installed in the assembly cavity. The diaphragm has a drain hole and a water inlet hole. The water inlet cavity communicates with the assembly cavity through the water inlet hole, and the assembly cavity communicates with the water outlet cavity through the drain hole. The core column is slidably connected to the cover, and one end of the core column is fixedly connected to the inner magnet; The support is fixedly connected to the cover, the slider is slidably connected to the support, the support has a switching area, and the first external magnet and the second external magnet are respectively fixedly disposed at both ends of the slider; When the first external magnet moves to the switching area, the first external magnet repels the inner magnet, the core pushes the diaphragm, so that the sealing surface of the diaphragm covers the opening of the water outlet cavity, the other end of the core blocks the drain hole, and the diaphragm is in a deformed state. When the second outer magnet moves to the switching area, the second outer magnet attracts the inner magnet, the core detaches from the diaphragm, the diaphragm returns to its initial shape, a gap is formed between the sealing surface of the diaphragm and the opening of the water outlet cavity, and the water inlet cavity communicates with the water outlet cavity through the gap.
2. The zero-pressure-loss control valve according to claim 1, characterized in that, The diaphragm has a conical boss at its center, which faces the core post. The drain hole is located on the conical boss. The diaphragm has a curved portion at its edge, and the groove of the curved portion faces the assembly cavity.
3. The zero-pressure-loss control valve according to claim 1, characterized in that, A compression spring is installed between the core and the cover.
4. A zero-pressure-loss control valve according to claim 1, characterized in that, It also includes a transmission device and a power source device, wherein the power source device is connected to the slider through the transmission device.
5. A zero-pressure-loss control valve according to claim 4, characterized in that, The transmission device includes a gear, a rack, and a rotating shaft. The rack is fixedly connected to the slider, the gear meshes with the rack, the center of the gear is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft is rotatably connected to the support.
6. A zero-pressure-loss control valve according to claim 5, characterized in that, The power source device is a motor, and the output shaft of the motor is connected to the rotating shaft via a coupling.
7. A zero-pressure-loss control valve according to claim 6, characterized in that, It also includes a control panel, which is electrically connected to the motor.