Mechanical metering water valve

Abstract

The utility model discloses a mechanical type ration water outlet valve, including box body, ration device and controlling means. Box body is equipped with the water inlet and water outlet that communicate in box body inner chamber. Ration device includes impeller, mounting plate, gear set, first reset torsional spring and control rod. The input gear of gear set is coaxial with impeller and is fixedly connected, and the output gear of gear set is fixedly connected with push rod, and first reset torsional spring is installed in output gear. Controlling means includes first piston rod, first swing bar and first spring. First piston rod is connected in box body along left and right direction sliding, and first piston rod is equipped with limit slot, and the left end of control rod is connected with the upper end of first swing bar, and the lower end of first swing bar can rotate and insert or separate limit slot. When the output gear rotates and drives push rod to push control rod to left against the force of first reset torsional spring, the lower end of first swing bar separates limit slot, and first spring drives first piston rod to move to right and blocks water outlet.

Description

Technical Field

[0001] This utility model relates to the field of water outlet valve technology, and in particular to a mechanical quantitative water outlet valve. Background Technology

[0002] In daily life, water-using appliances such as faucets, washing machines, and water heaters have become indispensable facilities. However, due to user negligence, equipment malfunctions, or forgetting to turn off the water supply, valves often fail to be shut off promptly after use. This leads to serious water waste and can even cause flooding, such as soaking floors and furniture, damaging renovations, and even seeping into the floors below, causing significant economic losses. Furthermore, for devices connected by flexible hoses, if the hose bursts or detaches, water will continue to flow unattended, posing an even greater danger.

[0003] In existing technologies, some electronically controlled water valves automatically close after a preset time or flow rate is reached. However, such solutions typically rely on electronic components such as sensors, controllers, and batteries, which are complex in structure, expensive, and susceptible to risks such as circuit failure, battery depletion, or poor stability in humid environments, resulting in insufficient reliability. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, this utility model proposes a mechanical quantitative water outlet valve.

[0005] This utility model embodiment provides a mechanical metering water outlet valve, the mechanical metering water outlet valve comprising: The box body is provided with an inlet and an outlet that communicate with the internal cavity of the box body; A metering device is located inside the box. The metering device includes a rotating assembly, a first reset torsion spring, and a control rod. The control rod is slidably connected to the rotating assembly in the left-right direction. A push rod is fixedly connected to the rotating assembly. The first reset torsion spring is used to reset the rotating assembly. The rotating assembly can be driven to rotate by the water flow through the inlet. A control device is located inside the housing. The control device includes a first piston rod, a first swing rod, and a first spring. The first piston rod is slidably connected to the housing in the left-right direction. The first swing rod is rotatably connected to the housing. The first piston rod is provided with a limiting groove. The upper end of the first swing rod is connected to the left end of the control rod. The lower end of the first swing rod can be rotatably inserted into or disengaged from the limiting groove. The first spring continuously applies a rightward force to the first piston rod. When the rotating assembly rotates against the force of the first reset torsion spring and drives the push rod to push the control rod to the left, the lower end of the first swing rod disengages from the limiting groove, and the first spring drives the first piston rod to move to the right and block the water outlet.

[0006] According to some embodiments of this utility model, the rotating assembly includes an impeller, a mounting plate, and a gear set. The mounting plate is fixedly connected to the housing, the gear set is rotatably connected to the mounting plate, and the control lever is slidably connected to the mounting plate in the left-right direction. The input gear of the gear set is fixedly connected to the impeller, and the output gear of the gear set is fixedly connected to a push rod. A first reset torsion spring is mounted on the output gear. The impeller can be rotated by the water flow through the inlet. The output gear can rotate against the force of the first reset torsion spring and drive the push rod to the left to push the control lever. The metering device further includes a first housing and a connecting cylinder. The first housing has an upward opening and is located below the mounting plate. The first housing is fixedly connected to the mounting plate. The impeller is located inside the first housing and rotatably connected to the first housing. There is a gap between the upper end face of the first housing and the lower end face of the mounting plate. The connecting cylinder is coaxially arranged with and fixedly connected to the input gear. The connecting cylinder has internal teeth. A connecting column is fixedly provided in the middle of the impeller. The connecting column has external teeth. The connecting column is inserted upward into the connecting cylinder and meshes with the connecting cylinder.

[0007] According to some embodiments of this utility model, the mechanical quantitative water outlet valve further includes a water inlet assembly located inside the housing. The water inlet assembly includes a second housing, a second piston rod, and a second spring. The opening of the second housing faces left and is connected to the water inlet. The left end of the second piston rod is inserted into the second housing and slidably connected to the second housing in the left-right direction. The second spring is located inside the second housing, with its left end connected to the second housing and its right end connected to the second piston rod. The side wall of the second housing is provided with a first water outlet and a second water outlet. The first water outlet communicates with the inner cavity of the housing, and the second water outlet communicates with the inner cavity of the first housing through a connecting pipe. The second piston rod can simultaneously block or open the first water outlet and the second water outlet.

[0008] According to some embodiments of this utility model, the gear set includes a swing gear, an input gear, and an output gear. The input gear and the output gear are both rotatably connected to the mounting plate. The mounting plate is rotatably connected to a swing arm. The swing gear is rotatably connected to the swing arm. The right end of the second piston rod is hinged to the swing arm. The second piston rod can move in the left-right direction to drive the swing arm to swing, so that the swing gear can simultaneously engage with the input gear and the output gear, or disengage the swing gear from the input gear and the output gear respectively.

[0009] According to some embodiments of this utility model, the box body is provided with an adjustment assembly, which includes an adjustment bolt and a limiting baffle. The adjustment bolt passes through and is threadedly connected to the box body. The lower end of the adjustment bolt is fixedly connected to the limiting baffle. The limiting baffle is located in the inner cavity of the box body. The adjustment bolt is coaxially arranged with the output gear. The output gear can rotate counterclockwise and drive the push rod to push the control rod to the left. The first reset torsion spring can drive the output gear to rotate clockwise and drive the push rod to rotate until it abuts against the limiting baffle.

[0010] According to some embodiments of this utility model, the control device further includes a water outlet pipe and a mounting bracket. The water outlet pipe and the mounting bracket are both fixedly installed in the inner cavity of the box. The right end of the water outlet pipe is connected to the water outlet. The first piston rod is slidably connected to the mounting bracket in the left-right direction. The first spring is sleeved on the first piston rod. The left end of the first spring is connected to the mounting bracket, and the right end of the first spring is connected to the first piston rod. The first piston rod can move to the right and block the left end of the water outlet pipe.

[0011] According to some embodiments of the present invention, the control device further includes a reset spring, the left end of which is connected to the first swing arm, and the right end of which is connected to the water outlet pipe. The reset spring continuously applies tension to the first swing arm, causing the upper end of the first swing arm to swing to the right.

[0012] According to some embodiments of the present invention, the mechanical quantitative water outlet valve further includes a pivot pin, a second swing rod, and a reset lever. The pivot pin passes through and is rotatably connected to the front side wall of the housing. The rear end of the pivot pin is inserted into the inner cavity of the housing. The reset lever is located in the inner cavity of the housing. The rear end of the pivot pin is fixedly connected to the reset lever. The front end of the pivot pin is fixed to one end of the second swing rod. The reset lever can pull the first piston rod to the left.

[0013] According to some embodiments of this utility model, the rear end of the first piston rod is provided with an annular baffle. When the first piston rod blocks the water outlet pipe, the rotation of the second swing rod can drive the reset lever to rotate and push the annular baffle to the left, so that the second piston rod moves away from the water outlet pipe to the left and the lower end of the first swing rod is inserted into the limiting groove.

[0014] According to some embodiments of the present invention, the mechanical quantitative water outlet valve further includes a second reset torsion spring, which is sleeved on the pivot pin, and the two ends of the second reset torsion spring are respectively connected to the housing and the second swing rod.

[0015] The mechanical metering water outlet valve according to the embodiments of this utility model has at least the following technical effects: 1. During the water flow process, the lower end of the control rod is inserted into the limiting groove, the water inlet is opened, and water enters the inner cavity of the box through the water inlet. Some water flows out through the water outlet, and the other part of the water drives the impeller to rotate and then flows out through the water outlet. When the impeller rotates, it drives the input gear to rotate, thereby driving the output gear to rotate. During the rotation of the output gear, it overcomes the force of the first reset torsion spring, thereby driving the push rod to rotate around the axis of the output gear.

[0016] 2. If there is little water entering the box, and the push rod does not push the control rod to the left to stop the water inlet, the output gear will rotate in the opposite direction under the action of the first reset torsion spring, thereby driving the push rod back to the initial position. If there is a lot of water entering the box, and the push rod rotates under the drive of the output gear and pushes the control rod to the left, the upper end of the control rod will swing to the left and the lower end will swing to the right, causing the lower end of the control rod to disengage from the limit groove. The first spring will drive the first piston rod to move to the right, thereby blocking the water outlet.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a mechanical quantitative water outlet valve according to some embodiments of this utility model; Figure 2 This is a partial structural schematic diagram of a mechanical quantitative water outlet valve according to some embodiments of this utility model; Figure 3 This is an exploded view of a portion of the structure of a mechanical quantitative water outlet valve according to some embodiments of this utility model; Figure 4 This is a schematic diagram of the structure of the first piston rod blocking the water outlet in some embodiments of this utility model; Figure 5 This is a schematic diagram of the structure of the first piston rod opening the water outlet in some embodiments of this utility model; Figure 6 This is a schematic diagram of the structure of a quantitative device according to some embodiments of the present invention; Figure 7 This is a schematic diagram showing the connection between the quantitative device and the second housing in some embodiments of this utility model; Figure 8 This is a schematic diagram of the structure of the second piston rod blocking the first and second water outlet holes according to some embodiments of this utility model; Figure 9 This is a schematic diagram of the structure of the second piston rod opening the first and second water outlet holes according to some embodiments of this utility model; Figure 10 This is a schematic diagram of the structure of the limiting baffle blocking push rod in some embodiments of this utility model.

[0019] Icon labels: Box body 100; Inlet 101; Outlet 102; Quantitative device 200; mounting plate 210; impeller 220; first reset torsion spring 230; control lever 240; gear set 250; input gear 251; output gear 252; push rod 260; swing gear 270; swing arm 280; Control device 300; first piston rod 310; limiting groove 311; first swing rod 320; first spring 330; First housing 400; connecting cylinder 410; connecting column 420; water pipe 430; Water inlet assembly 500; second housing 510; second piston rod 520; second spring 530; first water outlet 541; second water outlet 542; connecting pipe 550; third spring 560; rod cylinder 571; rod head 572; Adjusting component 600; adjusting bolt 610; limit baffle 620; Water outlet pipe 700; mounting bracket 710; return spring 720; 800; second rocker arm 810; reset lever 820; annular baffle 830; second reset torsion spring 840. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0025] According to some embodiments of this utility model, refer to Figures 1 to 10The mechanical metering valve includes a housing 100, a metering device 200, and a control device 300. The housing 100 has an inlet 101 and an outlet 102 communicating with the interior of the housing 100. The inlet 101 is located on the front side wall of the housing 100, and the outlet 102 is located on the right side wall of the housing 100. The metering device 200 is located inside the housing 100 and includes an impeller 220, a mounting plate 210, a gear set 250, a first return torsion spring 230, and a control lever 240. The impeller 220 has its axis pointing vertically. The mounting plate 210 is fixedly connected to the housing 100. The gear set 250 is rotatably connected to the mounting plate 210. The control lever 240 is slidably connected to the mounting plate 210 in the left-right direction. The input gear 251 of the gear set 250 is coaxially arranged and fixedly connected to the impeller 220. The output gear 252 of the gear set 250 is fixedly connected to a push rod 260. A first reset torsion spring 230 is mounted on the output gear 252, with its two ends connected to the output gear 252 and the mounting plate 210, respectively. The impeller 220 can be rotated by the water flow through the inlet 101. The impeller 220 is preferably made of lightweight, low-inertia, and wear-resistant polyoxymethylene or reinforced nylon to ensure sensitive start-up even at low water flow rates. The control device 300 is located inside the housing 100 and includes a first piston rod 310, a first rocker arm 320, and a first spring 330. The axis of the first piston rod 310 is oriented left-right, and the piston end of the first piston rod 310 is located at the right end of the first piston rod 310. The first piston rod 310 is slidably connected to the housing 100 in the left-right direction, and the first rocker arm 320 is rotatably connected to the housing 100. The first piston rod 310 is provided with a limiting groove 311. The upper end of the first rocker arm 320 is connected to the left end of the control rod 240, and the lower end of the first rocker arm 320 can rotate to insert into or disengage from the limiting groove 311. The first spring 330 continuously applies a rightward force to the first piston rod 310. When the output gear 252 rotates against the force of the first reset torsion spring 230 and drives the push rod 260 to push the control rod 240 to the left, the lower end of the first rocker arm 320 disengages from the limiting groove 311, and the first spring 330 drives the first piston rod 310 to move to the right and block the outlet 102.

[0026] During the water flow process, the lower end of the control rod 240 is inserted into the limiting groove 311, the water inlet 101 is opened, and water enters the inner cavity of the box 100 through the water inlet 101. Some water flows out through the water outlet 102, and the other part of the water drives the impeller 220 to rotate and then flows out through the water outlet 102. When the impeller 220 rotates, it drives the input gear 251 to rotate, thereby driving the output gear 252 to rotate. During the rotation, the output gear 252 overcomes the force of the first reset torsion spring 230, thereby driving the push rod 260 to rotate around the axis of the output gear 252.

[0027] If the amount of water entering the housing 100 is small, and the push rod 260 does not push the control lever 240 to the left to stop the water intake, the output gear 252 rotates in the opposite direction under the action of the first reset torsion spring 230, thereby driving the push rod 260 back to its initial position. For multiple, short-term, and discontinuous water usage, such as handwashing, the metering device will automatically reset after each water usage stop. This avoids the incorrect accumulation of multiple short-term water usages, which could lead to accidental valve closure during normal water usage.

[0028] If the amount of water entering the box 100 exceeds a certain amount, the push rod 260 rotates under the drive of the output gear 252 and pushes the control rod 240 to the left. The upper end of the control rod 240 swings to the left and the lower end swings to the right, causing the lower end of the control rod 240 to disengage from the limiting groove 311. The first spring 330 drives the first piston rod 310 to move to the right, thereby blocking the water outlet 102.

[0029] This mechanical metering water valve features automatic water shut-off, preventing situations where water supply is not turned off in time due to user negligence, equipment malfunction, or forgetting to turn off the water source, thus avoiding serious water waste or even flooding. The mechanical metering water valve provides highly reliable, maintenance-free water safety. Its purely mechanical structure allows it to adapt to humid and variable environments such as kitchens and bathrooms, eliminating concerns about battery depletion or short circuits caused by moisture. Upon detecting abnormally high and continuous water usage, it can autonomously shut off the water supply, effectively avoiding economic losses and safety hazards caused by human negligence or equipment malfunction.

[0030] According to some embodiments of this utility model, refer to Figure 2 and Figure 3 The metering device 200 also includes a first housing 400 and a connecting cylinder 410. The first housing 400 is cylindrical with its opening facing upward. The first housing 400 is located below the mounting plate 210 and is fixedly connected to the mounting plate 210. The impeller 220 is located inside the first housing 400 and is rotatably connected to the first housing 400. There is a gap between the upper end face of the first housing 400 and the lower end face of the mounting plate 210. Water entering the first housing 400 can drive the impeller 220 to rotate and then flow out of the first housing 400 through the gap between the first housing 400 and the mounting plate 210. The connecting cylinder 410 is coaxially arranged with the input gear 251. The upper end of the connecting cylinder 410 is fixedly connected to the input gear 251. The connecting cylinder 410 has internal teeth. A connecting column 420 is fixedly provided in the middle of the impeller 220. The connecting column 420 has external teeth. The connecting column 420 is inserted upward into the connecting cylinder 410 and meshes with the connecting cylinder 410. When the impeller 220 rotates, it drives the connecting column 420 to rotate, thereby driving the connecting cylinder 410 and the input gear 251 to rotate.

[0031] According to some embodiments of this utility model, refer to Figure 3 , Figure 8 and Figure 9 The mechanical quantitative water outlet valve also includes a water inlet assembly 500, which is located inside the housing 100. The water inlet assembly 500 includes a second housing 510, a second piston rod 520, and a second spring 530. The opening of the second housing 510 faces left and is connected to the water inlet 101. The left end of the second housing 510 is inserted into the water inlet 101. An annular sealing ring is provided between the second housing 510 and the wall of the water inlet 101 to prevent water from flowing out from the gap between the second housing 510 and the water inlet 101, ensuring that all the water passing through the water inlet 101 enters the second housing 510. The left end of the second piston rod 520 is inserted into the second housing 510 and slidably connected to the second housing 510 in the left-right direction. The second spring 530 is located inside the second housing 510, with its left end connected to the second housing 510 and its right end connected to the second piston rod 520. The second spring 530 applies a leftward pulling force to the second piston rod 520. The side wall of the second housing 510 is provided with a first water outlet 541 and a second water outlet 542. The first water outlet 541 communicates with the inner cavity of the box 100, and the second water outlet 542 communicates with the inner cavity of the first housing 400 through a connecting pipe 550. The outer side wall of the first housing 400 is provided with a water passage pipe 430 communicating with the first housing 400. The two ends of the connecting pipe 550 are respectively connected to the second water outlet 542 and the water passage pipe 430. The second piston rod 520 can simultaneously block or open the first water outlet 541 and the second water outlet 542.

[0032] When water enters the inner cavity of the second housing 510 through the inlet 101, under the action of water pressure, the second piston rod 520 overcomes the tension of the second spring 530 and moves to the right, causing the first outlet 541 and the second outlet 542 to open. Some water in the second housing 510 flows out through the first outlet 541 into the inner cavity of the box 100 and exits through the outlet 102. Some water enters the connecting pipe 550 through the second outlet 542 and then enters the first housing 400 through the water pipe 430, thereby driving the impeller 220 to rotate. It then flows out of the first housing 400 and exits through the outlet 102. When the water supply or water usage is stopped, the second spring 530 pulls the second piston rod 520 to the left, causing the second piston rod 520 to simultaneously block the first outlet 541 and the second outlet 542.

[0033] According to some embodiments of this utility model, refer to Figure 3 , Figure 6 and Figure 7The gear set 250 includes a swing gear 270, an input gear 251, and an output gear 252. The input gear 251 and the output gear 252 are both rotatably connected to the mounting plate 210. The mounting plate 210 is rotatably connected to a rocker arm 280. The swing gear 270 is rotatably connected to the rocker arm 280. The right end of the second piston rod 520 is hinged to the rocker arm 280. The second piston rod 520 can move in the left and right direction to drive the rocker arm 280 to swing, so that the swing gear 270 can simultaneously mesh with the input gear 251 and the output gear 252, or disengage the swing gear 270 from the input gear 251 and the output gear 252 respectively.

[0034] Understandably, when water enters the inner cavity of the second housing 510 through the inlet 101, the second piston rod 520 moves to the right under the action of water pressure, thereby driving the swing arm 280 to swing to the right. This causes the swing gear 270 to simultaneously mesh with the input gear 251 and the output gear 252. At this time, the rotation of the impeller 220 can drive the input gear 251, the swing gear 270, and the output gear 252 to rotate. When the water supply is stopped or the water usage is stopped, the second piston rod 520 moves to the left under the action of the second spring 530, and drives the swing arm 280 to swing to the left. This causes the swing gear 270 to disengage from the input gear 251 and the output gear 252, so that the output gear 252 can not mesh with other gears, allowing the output gear 252 to quickly reset under the action of the first reset torsion spring 230.

[0035] Preferably, the input gear 251 may include multiple gears, which mesh sequentially in order of increasing number of teeth. The gear with the fewest teeth is fixedly connected to the impeller 220, while the gear with the most teeth is used to mesh with the oscillating gear 270, thereby increasing the torque force and facilitating the rotation of the output gear 252.

[0036] Preferred, refer to Figure 8 and Figure 9 The second piston rod 520 includes a third spring 560, a rod cylinder 571, and a rod head 572. The left end of the rod cylinder 571 is inserted into the second housing 510 and slidably connected to it in the left-right direction. The left end of the rod head 572 is inserted into the rod cylinder 571 and slidably connected to it in the left-right direction. The third spring 560 is located inside the rod cylinder 571, with its left end connected to the second housing 510 and its right end connected to the rod head 572. The third spring 560 continuously applies a rightward force to the rod head 572. The right end of the rod head 572 is hinged to the swing arm 280.

[0037] Under water pressure, the cylinder 571 and the rod head 572 move to the right, thereby causing the swing arm 280 to swing to the right, so that the swing gear 270 simultaneously meshes with the input gear 251 and the output gear 252. At this time, the cylinder 571 continues to move to the right. Since the rod head 572 has already pressed against the swing arm 280 to the right, the cylinder 571 continues to move to the right relative to the rod head 572. The third spring 560 continuously applies a force to the right to the rod head 572, ensuring that the rod head 572 can press against the swing arm 280 to the right. Since the cylinder 571 and the rod head 572 can move relative to each other, the swing gear 270 is stably meshed with the input gear 251 and the output gear 252 respectively. At the same time, it avoids the swing arm 280 being damaged during the continuous rightward movement of the cylinder 571 due to excessive water pressure.

[0038] According to some embodiments of this utility model, refer to Figure 1 and Figure 10 The housing 100 is provided with an adjustment assembly 600, which includes an adjustment bolt 610 and a limiting baffle 620. The adjustment bolt 610 passes through and is threadedly connected to the housing 100. The lower end of the adjustment bolt 610 is fixedly connected to the limiting baffle 620. The limiting baffle 620 is located in the inner cavity of the housing 100. The adjustment bolt 610 is coaxially arranged with the output gear 252. The output gear 252 can rotate counterclockwise and drive the push rod 260 to push the control rod 240 to the left. The first reset torsion spring 230 can drive the output gear 252 to rotate clockwise and drive the push rod 260 to rotate until it abuts against the limiting baffle 620.

[0039] When the impeller 220 drives the input gear 251 to rotate, in the top-down view, the output gear 252 rotates counterclockwise, driving the push rod 260 to rotate counterclockwise by a certain angle and then pushing the first swing rod 320 to the left; when the swing gear 270 disengages from the output gear 252, under the action of the first reset torsion spring 230, the output gear 252 rotates clockwise, thereby driving the push rod 260 to rotate clockwise around the axis of the output gear 252 until the push rod 260 abuts against the limit baffle 620.

[0040] Understandably, push rod 260 needs to rotate counterclockwise by a sufficient angle before it can push control rod 240 to the left. If water supply or usage stops before this, push rod 260 cannot continue to rotate. By rotating adjusting bolt 610 to adjust the position of limit baffle 620, the angle required for push rod 260 to rotate to push control rod 240 to the left can be changed, thereby indirectly adjusting the maximum water output. When the water output reaches its maximum, push rod 260 rotates to a sufficient angle to push control rod 240, causing first piston rod 310 to block outlet 102. For example, refer to... Figure 10With the limit baffle 620 positioned directly behind, push rod 260 needs to rotate approximately 180 degrees counterclockwise to push control rod 240 to the left. If the limit baffle 620 is rotated to the right along the axis of output gear 252 via adjusting bolt 610, push rod 260 only needs to rotate approximately 90 degrees counterclockwise to push control rod 240 to the left. The larger the required rotation angle, the greater the maximum water consumption. Users can adjust the maximum water consumption according to their actual needs to avoid push rod 260 accidentally contacting control rod 240 during normal water consumption, which could cause the first piston rod 310 to block the outlet 102.

[0041] This adjustable function greatly expands the product's applicable scenarios. For example, when used for washing machine water intake, the metering volume can be adjusted to a larger value (e.g., 50-100 liters); when used for sink faucets, it can be adjusted to a smaller value (e.g., 5-10 liters) to prevent children from playing with water or forgetting to turn off the faucet. This adjustment is achieved through a change in the position of the mechanical structure, requiring no complex programming or settings, making it intuitive and reliable. It changes the metering value by altering the mechanical stroke, achieving both functional flexibility and structural stability.

[0042] According to some embodiments of this utility model, refer to Figures 3 to 5 The control device 300 also includes a water outlet pipe 700 and a mounting bracket 710. Both the water outlet pipe 700 and the mounting bracket 710 are fixedly installed in the inner cavity of the box 100. The right end of the water outlet pipe 700 is connected to the water outlet 102. The right end of the water outlet pipe 700 is inserted into the water outlet 102. There is an annular sealing ring between the water outlet pipe 700 and the water outlet 102 to prevent water from passing through the gap between the water outlet pipe 700 and the water outlet 102, ensuring that water in the inner cavity of the box 100 can only enter the water outlet pipe 700 and then be discharged through the water outlet 102. The first piston rod 310 is slidably connected to the mounting bracket 710 in the left-right direction. The first spring 330 is sleeved on the first piston rod 310. The left end of the first spring 330 is connected to the mounting bracket 710, and the right end of the first spring 330 is connected to the first piston rod 310. The first piston rod 310 can move to the right and block the left end of the water outlet pipe 700, thereby blocking the water outlet 102.

[0043] Preferred, refer to Figures 3 to 5 The control device 300 also includes a reset spring 720. The left end of the reset spring 720 is connected to the first swing rod 320, and the right end of the reset spring 720 is connected to the water outlet pipe 700. The reset spring 720 continuously applies tension to the first swing rod 320, causing the upper end of the first swing rod 320 to swing to the right.

[0044] Understandably, during normal water discharge from the housing 100, the lower end of the first swing rod 320 is inserted into the limiting groove 311, while the return spring 720 continuously applies a rightward pulling force to the upper end of the first swing rod 320. This allows the lower end of the first swing rod 320 to press downward into the limiting groove 311 and apply a certain pressure to the limiting groove 311, thereby overcoming the rightward pushing force of the first spring 330 on the first piston rod 310 and ensuring that the first piston rod 310 cannot move to the right and block the water outlet pipe 700. When the control lever 240 moves to the left, overcoming the force of the return spring 720, and causing the upper end of the first swing rod 320 to swing to the left, the lower end of the first swing rod 320 swings to the right and disengages from the limiting groove 311. The first spring 330 can then push the first piston rod 310 to the right, causing the first piston rod 310 to move to the right and block the water outlet pipe 700.

[0045] It should be noted that after the first piston rod 310 is triggered to block the water outlet 102 and cut off the water supply, when it is necessary to reopen the water outlet 102 and the water outlet pipe 700, the water supply from the water inlet 101 is stopped. The output gear 252 rotates back to its initial position under the action of the first reset torsion spring 230. Under the action of the reset tension spring 720, the upper end of the first swing rod 320 swings to the right and moves the control rod 240 to the right back to its initial position. By inserting a finger or stick through the water outlet 102 and the water outlet pipe 700, the force of the first spring 330 is overcome and the first piston rod 310 is pushed to the left, so that the lower end of the first swing rod 320 is re-inserted into the limiting groove 311, thereby reopening the water outlet 102 and the water outlet pipe 700.

[0046] According to some embodiments of this utility model, refer to Figure 1 , Figure 4 and Figure 5 The mechanical quantitative water outlet valve also includes a pivot pin 800, a second rocker arm 810, and a reset lever 820. The pivot pin 800 is inserted through and rotatably connected to the front side wall of the housing 100. The rear end of the pivot pin 800 is inserted into the inner cavity of the housing 100. The reset lever 820 is located in the inner cavity of the housing 100. The rear end of the pivot pin 800 is fixedly connected to the reset lever 820. The front end of the pivot pin 800 is fixed to one end of the second rocker arm 810. The reset lever 820 can pull the first piston rod 310 to the left.

[0047] Understandably, manually reopening the water outlet 102 using fingers or sticks is quite cumbersome. Therefore, the second swing arm 810 can be rotated to swing the reset lever 820 to the left. The reset lever 820 applies a leftward force to the first piston rod 310, thereby moving the first piston rod 310 to the left to complete the reset. Preferably, refer to... Figure 4 and Figure 5The rear end of the first piston rod 310 is provided with an annular baffle 830. When the first piston rod 310 blocks the water outlet pipe 700, the rotation of the second swing rod 810 can drive the reset lever 820 to rotate and push the annular baffle 830 to the left, so that the second piston rod 520 moves away from the water outlet pipe 700 to the left and the lower end of the first swing rod 320 is inserted into the limiting groove 311.

[0048] Furthermore, refer to Figure 4 and Figure 5 The mechanical quantitative water outlet valve also includes a second reset torsion spring 840, which is sleeved on the pivot pin 800. Both ends of the second reset torsion spring 840 are connected to the housing 100 and the second swing rod 810, respectively. It is understood that the left end of the second swing rod 810 is fixedly connected to the pivot pin 800. When the first piston rod 310 needs to be pushed to the left, the force of the second reset torsion spring 840 is overcome, causing the right end of the second swing rod 810 to swing downwards, driving the reset lever 820 to move to the left, thereby driving the first piston rod 310 to move to the left. This causes the lower end of the first swing rod 320 to insert into the limiting groove 311. When the second swing rod 810 is released, under the action of the second reset torsion spring 840, the right end of the second swing rod 810 swings upwards back to its initial position, while the reset lever 820 swings to the right back to its initial position. This prevents the reset lever 820 from potentially blocking the first piston rod 310 from moving to the right and blocking the outlet 102 after the maximum water consumption is triggered.

[0049] The workflow of this technical solution includes: After installation, the valve is in the open state after manual reset. The user can rotate the adjusting bolt 610 on the outside of the valve body to rotate the internal limit baffle 620 to a specific position, thereby preset the maximum allowable flow rate for this water use. The position of the limit baffle 620 determines the starting angle of the push rod 260 after reset. The difference between this angle and the total rotation angle required to trigger valve closure corresponds to the set quantitative value.

[0050] When the user turns on the upstream water source, pressurized water flows through the inlet 101 into the second housing 510 of the water inlet assembly 500. The water pressure acts on the second piston rod 520, overcoming the tension of the second spring 530, causing the second piston rod 520 to move to the right. On one hand, the first outlet hole 541 and the second outlet hole 542 are opened, allowing water to flow through; on the other hand, the swing arm 280, hinged to the second piston rod 520, is driven, causing the swing gear 270 to simultaneously mesh with the input gear 251 and the output gear 252, activating and connecting the entire metering transmission chain.

[0051] The water flow is divided into two paths: the main water flow flows directly into the inner cavity of the housing 100 through the first outlet 541 and is ready to flow out from the outlet 102, ensuring the user's water flow rate; the metering water flow is precisely guided into the first housing 400 through the second outlet 542, connecting pipe 550, and water pipe 430, impacting the impeller 220 at the optimal angle to make it rotate. The rotation of the impeller 220 drives the multi-stage reduction and torque amplification input gear 251 and oscillating gear 270 through the meshing connecting column 420 and connecting cylinder 410, ultimately driving the output gear 252 to rotate slowly and with high torque in a counterclockwise direction. The push rod 260 on the output gear 252 also starts from the starting position defined by the limit baffle 620 and rotates counterclockwise synchronously. At the same time, the first reset torsion spring 230 is gradually tightened to store reset energy.

[0052] As water consumption continues to accumulate, the rotation angle of the output gear 252 and the push rod 260 continuously increases. When the accumulated water volume reaches a preset value, the end of the push rod 260 rotates to a predetermined position and begins to push the control rod 240 to the left. The control rod 240 overcomes the preload of the return spring 720, causing the upper end of the first swing rod 320 to deflect to the left. According to the lever principle, the lower end of the first swing rod 320 swings to the right, instantly disengaging from the limiting groove 311 of the first piston rod 310. The first spring 330 immediately releases its potential energy, pushing the first piston rod 310 to the right to the end of its stroke. The seal on its piston end firmly blocks the port of the water outlet pipe 700, thereby cutting off the water supply and achieving automatic water shut-off.

[0053] Without triggering the first piston rod 310 to cut off the water supply, the user shuts off the upstream water source, causing the water pressure at the inlet 101 to disappear. The second spring 530 in the water inlet assembly 500 immediately pulls the second piston rod 520 back to the left, blocking the first and second outlet holes 542. Simultaneously, the swing arm 280 is driven, causing the swing gear 270 to disengage from the input gear 251 and the output gear 252. At this time, the output gear 252, disengaged from the entire transmission chain, instantly reverses at high speed clockwise under the elastic force stored in the first reset torsion spring 230, driving the push rod 260 to rotate together until the push rod 260 re-abuts against the limit baffle 620 set by the adjusting bolt 610, completing the zeroing and reset of the metering.

[0054] After the first piston rod 310 is triggered to cut off the water supply, the valve automatically shuts off the water and enters a closed and locked state. To resume water use, the user needs to push the external second rocker arm 810 downwards. The second rocker arm 810, through the pivot pin 800, drives the internal reset lever 820 to rotate. The reset lever 820 pushes the annular baffle 830 at the rear end of the first piston rod 310 to the left, overcoming the large thrust of the first spring 330, causing the first piston rod 310 to move to the left. When the limiting groove 311 of the first piston rod 310 is realigned with the lower end of the first rocker arm 320, with the assistance of the reset tension spring 720, the lower end of the first rocker arm 320 re-inserts into the limiting groove 311, locking the first piston rod 310 back to the open position. After the user releases the second rocker arm 810, the second reset torsion spring 840 automatically returns it to its initial position, and the reset lever 820 also moves away, ensuring that it does not affect the next automatic valve closing action. At this point, the valve is ready and can begin the next metered water circulation.

[0055] This mechanical metering valve can function as a main valve. Its inlet 101 is directly connected to the water supply pipe, while its outlet 102 can be connected to multiple branch pipes. When one of the branch pipes bursts or leaks, or when a faucet on a branch pipe is turned on, the mechanical metering valve will activate to measure the water usage. When the maximum water consumption is exceeded, the water supply will be cut off. Under normal circumstances, if the faucet is turned off before the maximum water consumption is exceeded, the water pressure inside the housing 100 will be consistent with the water supply pipe. Even if the second piston rod 520 moves to the left to re-seal the first outlet hole 541 and the second outlet hole 542, the output gear 252 will automatically reset under the elastic force of the first reset torsion spring 230.

[0056] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A mechanical metering water outlet valve, characterized in that, include: The box body (100) is provided with an inlet (101) and an outlet (102) communicating with the inner cavity of the box body (100). A metering device (200) is located inside the housing (100). The metering device (200) includes a rotating assembly, a first reset torsion spring (230), and a control rod (240). The control rod (240) is slidably connected to the rotating assembly in the left-right direction. A push rod (260) is fixedly connected to the rotating assembly. The first reset torsion spring (230) is used to reset the rotating assembly. The rotating assembly can be driven to rotate by the water flow through the inlet (101). A control device (300) is located inside the housing (100). The control device (300) includes a first piston rod (310), a first swing rod (320), and a first spring (330). The first piston rod (310) is slidably connected to the housing (100) in the left-right direction. The first swing rod (320) is rotatably connected to the housing (100). The first piston rod (310) is provided with a limiting groove (311). The upper end of the first swing rod (320) is connected to the left end of the control rod (240). The lower end of the first swing rod (320) can be rotatably inserted into or disengaged from the limiting groove (311). The first spring (330) continuously applies a rightward force to the first piston rod (310). When the rotating assembly rotates against the force of the first reset torsion spring (230) and drives the push rod (260) to push the control rod (240) to the left, the lower end of the first swing rod (320) disengages from the limiting groove (311), and the first spring (330) drives the first piston rod (310) to move to the right and block the water outlet (102).

2. The mechanical metering valve according to claim 1, characterized in that, The rotating assembly includes an impeller (220), a mounting plate (210), and a gear set (250). The mounting plate (210) is fixedly connected to the housing (100). The gear set (250) is rotatably connected to the mounting plate (210). The control lever (240) is slidably connected to the mounting plate (210) in the left-right direction. The input gear (251) of the gear set (250) is fixedly connected to the impeller (220). The output gear (252) of the gear set (250) is fixedly connected to a push rod (260). The first reset torsion spring (230) is installed on the output gear (252). The impeller (220) can be driven to rotate by the water flow through the inlet (101). The output gear (252) can overcome the force of the first reset torsion spring (230) and rotate, driving the push rod (260) to push the control lever (240) to the left. The measuring device (200) further includes a first housing (400) and a connecting cylinder (410). The first housing (400) has an upward opening and is located below the mounting plate (210). The first housing (400) is fixedly connected to the mounting plate (210). The impeller (220) is located inside the first housing (400) and rotatably connected to the first housing (400). There is a gap between the upper end face of the first housing (400) and the lower end face of the mounting plate (210). The connecting cylinder (410) is coaxially arranged and fixedly connected to the input gear (251). The connecting cylinder (410) has internal teeth. A connecting column (420) is fixedly provided in the middle of the impeller (220). The connecting column (420) has external teeth. The connecting column (420) is inserted upward into the connecting cylinder (410) and meshes with the connecting cylinder (410).

3. The mechanical metering valve according to claim 2, characterized in that, The mechanical quantitative water outlet valve also includes a water inlet assembly (500), which is located inside the housing (100). The water inlet assembly (500) includes a second housing (510), a second piston rod (520), and a second spring (530). The opening of the second housing (510) faces left and is connected to the water inlet (101). The left end of the second piston rod (520) is inserted into the second housing (510) and slidably connected to the second housing (510) in the left-right direction. The second spring (530) is located inside the second housing (510). The left end of the second spring (530) is connected to the second housing (510), and the right end of the second spring (530) is connected to the second piston rod (520). The side wall of the second housing (510) is provided with a first water outlet (541) and a second water outlet (542). The first water outlet (541) is connected to the inner cavity of the box (100), and the second water outlet (542) is connected to the inner cavity of the first housing (400) through a connecting pipe (550). The second piston rod (520) can simultaneously block or open the first water outlet (541) and the second water outlet (542).

4. The mechanical metering valve according to claim 3, characterized in that, The gear set (250) includes a swing gear (270), an input gear (251), and an output gear (252). The input gear (251) and the output gear (252) are rotatably connected to the mounting plate (210). The mounting plate (210) is rotatably connected to a swing arm (280). The swing gear (270) is rotatably connected to the swing arm (280). The right end of the second piston rod (520) is hinged to the swing arm (280). The second piston rod (520) can move in the left and right direction to drive the swing arm (280) to swing, so that the swing gear (270) can simultaneously mesh with the input gear (251) and the output gear (252), or disengage the swing gear (270) from the input gear (251) and the output gear (252) respectively.

5. The mechanical metering valve according to claim 2, characterized in that, The housing (100) is provided with an adjustment assembly (600), which includes an adjustment bolt (610) and a limiting baffle (620). The adjustment bolt (610) is threaded through and connected to the housing (100). The lower end of the adjustment bolt (610) is fixedly connected to the limiting baffle (620). The limiting baffle (620) is located in the inner cavity of the housing (100). The adjustment bolt (610) is coaxially arranged with the output gear (252). The output gear (252) can rotate counterclockwise and drive the push rod (260) to push the control rod (240) to the left. The first reset torsion spring (230) can drive the output gear (252) to rotate clockwise and drive the push rod (260) to rotate until it abuts against the limiting baffle (620).

6. The mechanical metering valve according to claim 3, characterized in that, The control device (300) further includes a water outlet pipe (700) and a mounting bracket (710). The water outlet pipe (700) and the mounting bracket (710) are both fixedly installed in the inner cavity of the box body (100). The right end of the water outlet pipe (700) is connected to the water outlet (102). The first piston rod (310) is slidably connected to the mounting bracket (710) in the left and right directions. The first spring (330) is sleeved on the first piston rod (310). The left end of the first spring (330) is connected to the mounting bracket (710), and the right end of the first spring (330) is connected to the first piston rod (310). The first piston rod (310) can move to the right and block the left end of the water outlet pipe (700).

7. The mechanical metering valve according to claim 6, characterized in that, The control device (300) further includes a reset spring (720), the left end of which is connected to the first swing arm (320), and the right end of which is connected to the water outlet pipe (700). The reset spring (720) continuously applies a pulling force to the first swing arm (320), causing the upper end of the first swing arm (320) to swing to the right.

8. The mechanical metering valve according to claim 7, characterized in that, The mechanical quantitative water outlet valve also includes a pivot pin (800), a second swing rod (810), and a reset lever (820). The pivot pin (800) passes through and is rotatably connected to the front side wall of the housing (100). The rear end of the pivot pin (800) is inserted into the inner cavity of the housing (100). The reset lever (820) is located in the inner cavity of the housing (100). The rear end of the pivot pin (800) is fixedly connected to the reset lever (820). The front end of the pivot pin (800) is fixed to one end of the second swing rod (810). The reset lever (820) can pull the first piston rod (310) to the left.

9. The mechanical metering valve according to claim 8, characterized in that, The rear end of the first piston rod (310) is provided with an annular baffle (830). When the first piston rod (310) blocks the water outlet pipe (700), the rotation of the second rocker arm (810) can drive the reset lever (820) to rotate and push the annular baffle (830) to the left, so that the second piston rod (520) moves away from the water outlet pipe (700) to the left and the lower end of the first rocker arm (320) is inserted into the limiting groove (311).

10. The mechanical metering valve according to claim 9, characterized in that, The mechanical quantitative water outlet valve also includes a second reset torsion spring (840), which is sleeved on the pivot pin (800). The two ends of the second reset torsion spring (840) are respectively connected to the housing (100) and the second rocker arm (810).

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