A water tap with automatic closing when water supply is interrupted

Abstract

A kind of automatic closing tap of water stop belongs to the field of domestic water management facilities. It is characterized by: the device includes base, frame, handle, control inner cavity, core inner cavity, spring, including three water inlets, third water outlet, one-way conical valve, drainage microchannel, the core inner cavity is tightly sleeved in the control inner cavity, both openings are vertically downward, the control inner cavity is inserted into the base, the closing valve core of tap and the wall surface of inlet and outlet Van der Waals force, water pressure and the buoyancy, gravity and human power, etc. Force is perpendicular to each other, to ensure that small water discharge or maximum water discharge can be automatically closed when water stop, and the normal opening and closing function will be automatically restored as long as the tap is closed again after the water supply is restored again. The accuracy of water stop being closed is high, the overall structure is simple, easy to operate, and suitable for popularization and use.

Description

Technical Field

[0001] This invention belongs to the field of civil tap water facilities, and specifically relates to an automatic shut-off device for water outages. Background Technology

[0002] Tap water is now widely available in daily life, but water outages due to pipeline renovations and maintenance have become commonplace. It's frequent for residents using tap water to forget to turn off their taps and leave when the water is cut off, leading to significant water loss when the water is restored, sometimes even damaging furniture. Many researchers have studied this issue and designed numerous water management solutions that automatically shut off the tap during outages. However, practical application shows that many water control technologies still have shortcomings in terms of device simplification, accuracy of shut-off during outages, and reliability upon reuse. For example, the technical solution in patent number 932422113.x, while scientifically designed, lacks consideration for the issue of the internal valve core 10 being pushed up by water turbulence during normal operation, thus shutting off the tap and affecting its normal use. Some solutions use electricity or valve balls, often resulting in large and complex mechanical structures and reduced accuracy in shutting off the tap during outages. Others are simple shut-off devices separate from the tap, among other problems. Therefore, a new water control device integrating automatic shut-off and faucet functions is designed, which has a simple mechanical structure, is easy to manufacture and apply in actual production, has a high probability of being shut off when the water supply is interrupted, and can function normally as a faucet after the water supply is restored, so as to provide convenience for safe water use for users. Summary of the Invention

[0003] The purpose of this invention is to provide a new water control device that integrates automatic water shut-off and faucet functions, ensuring safe water use for a wide range of users. This device is simple to operate, compact, and inexpensive, and ensures water supply is maintained during water outages. Its shape and size are similar to a regular faucet. In the event of a sudden water outage during normal use, this device automatically shuts off the water flow. Once water supply is restored, the user simply needs to turn off the faucet and then turn it back on to use the water normally. This invention is designed based on the principles of fluid mechanics and mechanical mechanics, providing a safe and reliable water control device for a large number of users.

[0004] The present invention achieves its objective by employing the following approach: A faucet that automatically shuts off when water is cut off includes a base 1, a frame 2, a handle 3, a control cavity 4, a core cavity 5, and a spring 6.

[0005] The base 1 includes a base inlet 1-1, a first water inlet 1-2, a second water inlet 1-3, a base outlet 1-4, a one-way conical valve 1-5, an inner top platform 1-8, and a drainage microchannel 1-9. The first water inlet 1-2 is a cuboid hole with a horizontal bottom plane; the second water inlet 1-3 is a cuboid hole with a horizontal bottom plane, a horizontal edge 1-3-a on the bottom plane, a horizontal edge 1-3-b on the top plane, and vertical edges 1-3-c on the two vertical planes of the second water inlet. The interior of the base 1 includes an inner top platform 1-8, an inner right bottom plane 1-11, and an inner left bottom plane 1-9. 12. The right bottom plane 1-11 and the left bottom plane 1-12 inside the base are on the same horizontal plane; the inner top platform 1-8 is a cuboid, the upper surface 1-10 of the inner top platform is horizontal, a drainage microchannel 1-9 is provided inside the inner top platform 1-8 and the bottom of the base, and a one-way conical valve 1-5 is provided in the drainage microchannel 1-9; the water inlet flow line 1-6 of the water inlet 1-1 and the water outlet flow line 1-7 of the water outlet 1-4.

[0006] The frame 2 includes an upper vent 2-1, a bottom right vent 2-2, and a bottom left vent 2-3.

[0007] The control cavity 4 includes a control cavity inlet 4-1, a control cavity outlet 4-2, four vertical inner wall surfaces 4-3, four vertical outer wall surfaces 4-4, a spring rod 4-5, a screw 4-6, and four control cavity vents 4-7. The control cavity 4 is rectangular in shape with a straight opening facing downwards. The four vertical wall surfaces have equal thickness. The control cavity inlet 4-1 is a rectangular hole with a horizontal bottom plane. The horizontal edge of the bottom plane of the control cavity inlet is 4-1-a, the horizontal edge of the top plane of the control cavity inlet is 4-1-b, and the vertical edges of the two vertical planes of the control cavity inlet are 4-1-c. The outlet 4-2 of the control cavity is a cuboid hole with a horizontal bottom plane. The horizontal edge of the bottom plane of the control cavity outlet is 4-2-a, the horizontal edge of the top plane of the control cavity outlet is 4-2-b, and the vertical edge of the two vertical planes of the control cavity outlet is 4-2-c. The inlet 4-1 and outlet 4-2 of the control cavity are respectively located on the two vertical walls of the opposite control cavity. The four vertical inner walls 4-3 of the control cavity are smooth with a roughness of N3, Ra0.1, and a dark gloss. The four vertical outer walls 4-4 of the control cavity are smooth with a roughness of N3, Ra0.1, and a dark gloss. The spring 6 is sleeved on the screw 4-6.

[0008] The core inner cavity 5 includes an inner cavity inlet 5-1, an inner cavity outlet 5-2, four vertical inner wall surfaces 5-3, four vertical outer wall surfaces 5-4, a top outer plane 5-5, and a top inner plane 5-6. The core inner cavity 5 is rectangular in shape, with a straight opening facing vertically downwards. The five wall surfaces are of equal thickness. The bottom plane at the opening of the core inner cavity 5 has the same shape and size as the upper surface 1-10 of the inner top platform. The inner cavity inlet 5-1 is a rectangular hole with a horizontal bottom plane. The horizontal edge 5-1-a of the bottom plane of the inner cavity inlet is... The horizontal edge line of the upper plane of the inner cavity inlet is 5-1-b, and the vertical edge line of the two vertical planes of the inner cavity inlet is 5-1-c; the inner cavity outlet 5-2 is a cuboid hole with a horizontal bottom plane, the horizontal edge line of the bottom plane of the inner cavity outlet is 5-2-a, the horizontal edge line of the upper plane of the inner cavity outlet is 5-2-b, and the vertical edge line of the two vertical planes of the inner cavity outlet is 5-2-c. The inner cavity inlet 5-1 and the inner cavity outlet 5-2 are respectively located on two opposite vertical wall surfaces; the four vertical outer wall surfaces 5-4 of the inner cavity are smooth with a roughness of N3, Ra0.1, and a dark gloss.

[0009] The core inner cavity 5 is tightly fitted inside the control inner cavity 4, with both openings facing vertically downwards. The control inner cavity 4 is inserted into the base 1, and the lower opening of the control inner cavity 4 is always tightly fitted onto the inner top platform 1-8. When the plane at the opening of the core inner cavity 5 is at its lowest position, it rests on the plane 1-10 of the inner top platform. The first water inlet 1-2, the control cavity inlet 4-1, and the inner cavity inlet 5-1 are on the same side; the second water inlet 1-3, the control cavity outlet 4-2, and the inner cavity outlet 5-2 are on the same side.

[0010] The dimensions of the base 1, control cavity 4, and core cavity 5 of this invention are set with x as a length unit, and the dimensions of each key mechanical structure are as follows: The length of the four outer plane edges of the control cavity is 11 = 24x; the distance from the bottom plane of the control cavity inlet to the bottom plane of the opening is 22 = 10x; the length of the horizontal edge line 4-1-a of the bottom plane of the control cavity inlet is 101 = 7x; the length of the vertical edge line 4-1-c of the two vertical planes of the control cavity inlet is 202 = 3x; the distance from the bottom plane of the control cavity outlet to the bottom plane of the opening is 44 = 13x; the length of the horizontal edge line 4-2-a of the bottom plane of the control cavity outlet is 303 = 7x; the length of the vertical edge line 4-2-c of the two vertical planes of the control cavity outlet is 404 = 3x; the distance from the horizontal edge line 4-2-b of the top plane of the control cavity outlet to the top plane of the cavity is 33 = 6.5x. The length of the four outer plane edges of the core cavity is 99 = 14.5x; the distance from the bottom plane of the inlet to the bottom plane of the opening is 1010 = 2x; the length of the horizontal edge of the bottom plane of the inlet is 5-1-a, which is 1011 = 7x; the length of the vertical edge of the two vertical planes of the inlet is 5-1-c, which is 909 = 3x; the distance from the bottom plane of the outlet to the bottom plane of the opening is 111 = 5x; the length of the horizontal edge of the bottom plane of the outlet is 5-2-a, which is 1101 = 4.6x; the length of the vertical edge of the two vertical planes of the outlet is 5-2-c, which is 1102 = 3x; and the distance from the horizontal edge of the top plane of the outlet is 5-2-b to the top plane of the cavity, which is 112 = 5x. The distance between the bottom plane of the first water inlet 1-2 and the left bottom plane 1-12 inside the base is 77 = 10x; the distance between the top plane of the inner top platform 1-10 and the left bottom plane 1-12 inside the base is 88 = 6x; the length of the horizontal side line of the bottom plane of the first water inlet 1-2 is 808 = 7x; the length of the vertical side line of the vertical plane of the first water inlet 1-2 is 707 = 7x; the distance between the horizontal side line 1-3-a of the bottom plane of the second water inlet and the right bottom plane 1-11 inside the base is 55 = 17x; the length of the horizontal side line 1-3-a of the bottom plane of the second water inlet is 606 = 7x; the length of the vertical side line 1-3-c of the two vertical planes of the second water inlet is 505 = 3x.

[0011] The beneficial effects of this invention are: The water tap that automatically shuts off when the water supply is interrupted, as described in this invention, creatively combines the van der Waals force of the valve core that shuts off the tap with the wall of the inlet and outlet, the water pressure, and the buoyancy, gravity, and human force that open and close the valve. This comprehensively improves the accuracy of shutting off, increases the safety factor, and features a simple structure that is easy to operate and is suitable for widespread use. Attached Figure Description

[0012] Figure 1(a) is a schematic diagram of the overall structure of the faucet device that automatically shuts off when the water supply is interrupted according to the present invention.

[0013] Figure 1(b) is an exploded view of the overall structure of the automatic shut-off faucet device of the present invention.

[0014] Figures 2(a) and (c) are schematic diagrams of the symmetrical cross-sectional structure of the base in this invention.

[0015] Figure 2(b) is a schematic diagram of the symmetrical cross-sectional structure of the drainage microchannel of the base in this invention.

[0016] Figures 3(a) and (b) are schematic diagrams of the symmetrical cross-sectional structure of the controlled internal cavity in this invention.

[0017] Figures 4(a) and (b) are schematic diagrams of the symmetrical cross-sectional structure of the core cavity in this invention.

[0018] Figure 5 This is a schematic diagram of the symmetrical cross-sectional structure of the present invention in its fully open state.

[0019] Figure 6 This is a schematic diagram of the symmetrical cross-sectional structure of the present invention, which automatically shuts off after water supply is interrupted.

[0020] Figure 7 This is a symmetrical cross-sectional view of the faucet structure when it is just turned off.

[0021] Figure 8 This is a symmetrical cross-sectional view of the faucet structure after it is turned off according to the present invention.

[0022] Figure 9 This is a symmetrical cross-sectional view of the faucet structure of the present invention, which automatically shuts off when the water supply is stopped in a slightly open state. Detailed Implementation

[0023] The present invention will be further described below with reference to embodiments and accompanying drawings: The present invention discloses an automatic shut-off faucet, comprising a base 1, a frame 2, a handle 3, a control cavity 4, a core cavity 5, and a spring 6; the frame 2 includes an upper vent 2-1, a bottom right vent 2-2, and a bottom left vent 2-3. Its structure is shown in Figure 1(a) and Figure 1(b).

[0024] The base 1 includes a base inlet 1-1, a first water inlet 1-2, a second water inlet 1-3, a water outlet 1-4, a one-way conical valve 1-5, an inner top platform 1-8, and a drainage microchannel 1-9. The first water inlet 1-2 is a cuboid hole with a horizontal bottom plane; the second water inlet 1-3 is a cuboid hole with a horizontal bottom plane, a horizontal edge 1-3-a on the bottom plane, a horizontal edge 1-3-b on the top plane, and vertical edges 1-3-c on the two vertical planes of the second water inlet. The interior of the base 1 includes an inner top platform 1-8, an inner right bottom plane 1-11, and an inner left bottom plane 1-9. 12. The right bottom plane 1-11 and the left bottom plane 1-12 inside the base are on the same horizontal plane; the inner top platform 1-8 is a cuboid, and the upper surface 1-10 of the inner top platform is horizontal. A drainage microchannel 1-9 is provided inside the inner top platform 1-8 and connected to the bottom of the base. A one-way conical valve 1-5 is provided in the drainage microchannel 1-9; there is an inlet flow line 1-6 at the inlet 1-1 and an outlet flow line 1-7 at the outlet 1-4. Its structure is shown in Figures 2(a), 2(b), and 2(c).

[0025] The control cavity 4 includes a control cavity inlet 4-1, a control cavity outlet 4-2, four vertical inner wall surfaces 4-3, four vertical outer wall surfaces 4-4, a spring rod 4-5, a screw 4-6, and four control cavity vents 4-7. The control cavity 4 is rectangular in shape with a straight opening facing downwards, and the four vertical wall surfaces are of equal thickness. The control cavity inlet 4-1 is a rectangular hole with a horizontal bottom plane. The horizontal edge of the bottom plane of the control cavity inlet is 4-1-a. The horizontal edge line of the upper plane of the water inlet is 4-1-b, and the vertical edge line of the two vertical planes of the water inlet of the control cavity is 4-1-c; the water outlet of the control cavity 4-2 is a cuboid hole with a horizontal bottom plane, the horizontal edge line of the bottom plane of the water outlet of the control cavity is 4-2-a, the horizontal edge line of the upper plane of the water outlet of the control cavity is 4-2-b, and the vertical edge line of the two vertical planes of the water outlet of the control cavity is 4-2-c. The water inlet 4-1 and the water outlet 4-2 of the control cavity are respectively located on the two vertical walls of the opposite control cavity; the spring 6 is sleeved on the screw 4-6. Its structure is shown in Figure 3(a) and Figure 3(b).

[0026] The core inner cavity 5 includes an inner cavity inlet 5-1, an inner cavity outlet 5-2, four vertical inner wall surfaces 5-3, four vertical outer wall surfaces 5-4, a top outer plane 5-5, and a top inner plane 5-6. The core inner cavity 5 is rectangular in shape, with a straight opening facing vertically downwards. The five wall surfaces are of equal thickness. The bottom plane at the opening of the core inner cavity 5 has the same shape and size as the top plane 1-10 of the inner top platform. The inner cavity inlet 5-1 is a rectangular prism hole with a horizontal bottom plane. The horizontal edge line of the bottom plane of the inner cavity inlet is 5-1-a, the horizontal edge line of the top plane of the inner cavity inlet is 5-1-b, and the vertical edge lines of the two vertical planes of the inner cavity inlet are 5-1-c. The inner cavity outlet 5-2 is a cuboid hole with a horizontal bottom plane. The horizontal edge line of the bottom plane of the inner cavity outlet is 5-2-a, the horizontal edge line of the top plane of the inner cavity outlet is 5-2-b, and the vertical edge lines of the two vertical planes of the inner cavity outlet are 5-2-c. The inner cavity inlet 5-1 and the inner cavity outlet 5-2 are respectively located on two opposite vertical wall surfaces. Its structure is shown in Figure 4(a) and Figure 4(b).

[0027] Example 1

[0028] The present invention discloses an automatic shut-off faucet that, when the water supply is fully opened, aligns the first water inlet 1-2 with the control chamber inlet 4-1 and the inner chamber inlet 5-1, and aligns the inner chamber outlet 5-2 with the control chamber outlet 4-2 and the second water inlet 1-3. Its structural configuration is as follows: Figure 5 As shown. When there is tap water in the water pipe, the water will exert water pressure on the inner wall after entering the core inner cavity 5. The water pressure on the four vertical inner wall surfaces 5-3 of the inner cavity is balanced. Since the water inlet cross-sectional area of ​​the inner cavity inlet 5-1 is 21x2 and the water outlet cross-sectional area of ​​the inner cavity outlet 5-2 is 15.8x2, although the water is flowing in the cavity, according to the principle of fluid mechanics, the water still exerts upward pressure on the top inner plane 5-6, causing the core inner cavity 5 to move upward. The top outer plane 5-5 presses tightly against the upper inner wall surface of the control inner cavity 4, so that the faucet can be turned on at will. When the faucet is fully open, a sudden water outage causes a loss of water pressure in the pipes. The inner surface 5-6 at the top of the core cavity 5 loses upward pressure and, under the elastic force of spring 6, overcomes the friction with the four vertical inner walls 4-3 of the control cavity, falling downwards. During this process, the distance between the outer surface 5-5 at the top and the upper inner wall of the control cavity 4 increases, allowing air to flow in through the four vent holes 4-7. Water accumulated inside the core cavity 5 flows out through the drain microchannel 1-9, opening the one-way conical valve 1-5. The lower opening of the core cavity 5 eventually touches the inner top platform surface 1-10. Its final structure is as follows: Figure 6 As shown. At this time, the inner cavity water inlet 5-1 is completely misaligned with the control cavity water inlet 4-1 and the first water inlet 1-2, and the inner cavity water outlet 5-2 is completely misaligned with the control cavity water outlet 4-2 and the second water inlet 1-3, thus closing the water flow path. When the water supply is restored, water cannot enter the core inner cavity 5 from the first water inlet 1-2 and the control cavity water inlet 4-1, and the one-way cone valve 1-5 in the drain microchannel 1-9 is closed. Therefore, the faucet that automatically shuts off when the water supply is interrupted remains closed after the water supply is restored.

[0029] Example 2

[0030] The present invention describes an automatic shut-off faucet that, when the water supply is fully open and a sudden water outage occurs, causes the core inner cavity 5 to drop and close the faucet. When the water supply is restored, the core inner cavity 5 remains closed at all water outlets. Rotating the handle 3 causes the control inner cavity 4 to sink as a whole until the lower opening plane of the control inner cavity 4 abuts against the right bottom plane 1-11 and the left bottom plane 1-12 of the base. Its final structure is as follows. Figure 7 As shown. During the process of controlling the overall sinking of the inner cavity 4, the core inner cavity 5 remains in the same position as the base 1. The control cavity inlet 4-1 is always fully open. The control cavity inlet 4-1 and the inner cavity inlet 5-1 are gradually opened. The control cavity outlet 4-2 and the inner cavity outlet 5-2 are gradually opened. The control cavity outlet 4-2 and the second water inlet 1-3 are gradually closed synchronously. The control cavity 4 is adjusted to sink or move upwards. Airflow in the space above the upper outer surface of the control cavity 4 and the space below the outer plane of the lower opening of the control cavity 4 is achieved through the upper vent 2-1, the bottom right vent 2-2, and the bottom left vent 2-3 of the frame 2. (See Figure 1.) Figure 7 As shown. As the control chamber inlet 4-1 and the inner chamber inlet 5-1 gradually open, and the control chamber outlet 4-2 and the second water inlet 1-3 gradually close simultaneously, the core inner chamber 5, filled with water, exerts upward pressure on the top inner plane 5-6, pushing the core inner chamber 5 upward until the top outer plane 5-5 tightly presses against the upper inner wall of the control inner chamber 4. The inner chamber inlet 5-1 aligns with the control chamber inlet 4-1, and the inner chamber outlet 5-2 aligns with the control chamber outlet 4-2, restoring the faucet's ability to be switched on and off at will. Its final structural state is as follows: Figure 8 As shown.

[0031] Example 3

[0032] The water tap of this invention automatically shuts off when the water flow is interrupted. When the water flow is very low and the water supply is suddenly interrupted, the inner plane 5-6 at the top of the core inner cavity 5 loses upward pressure, and under the action of the spring 6, the lower opening plane of the core inner cavity 5 abuts against the plane 1-10 of the inner top platform. Its final structure is as follows. Figure 9 As shown. When the water flow is very small, the openings of the control cavity outlet 4-2 and the second water inlet 1-3 are small, meaning the distance between the horizontal edge line 4-2-b of the upper plane of the control cavity outlet and the horizontal edge line 1-3-a of the lower plane of the second water inlet is small. After the water stops, the lower opening plane of the core inner cavity 5 touches the upper plane 1-10 of the inner top platform. At this time, the horizontal edge line 5-2-a of the lower plane of the inner cavity outlet slides down below the horizontal edge line 4-2-a of the lower plane of the control cavity outlet. Similarly, the horizontal edge line 5-1-b of the upper plane of the inner cavity inlet slides down below the horizontal edge line 4-1-a of the lower plane of the control cavity inlet. The distance between the two is equal to the distance between the horizontal edge line 4-2-b of the upper plane of the control cavity outlet and the horizontal edge line 1-3-a of the lower plane of the second water inlet. The core inner cavity 5 closes the water inlet controlling the flow of water into and out of the inner cavity 4. The faucet that automatically shuts off when the water is stopped will also automatically shut off when the water flow is small.

[0033] This invention utilizes the special mechanical structure of the base 1, the control cavity 4, and the core cavity 5 to fully realize the automatic shut-off function when water is interrupted during small or maximum water flow. After water supply resumes, the faucet will return to its normal function by simply turning it off again.

[0034] Although this document uses terms such as base, frame, handle, control cavity, core cavity, upper vent, bottom right vent, bottom left vent, first water inlet, cavity outlet, control cavity outlet, second water inlet, and inner top platform frequently, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention, and interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A faucet that automatically shuts off when water is cut off, comprising a base (1), a frame (2), a handle (3), a control cavity (4), a core cavity (5), and a spring (6); The base (1) includes a base inlet (1-1), a first water inlet (1-2), a second water inlet (1-3), a base outlet (1-4), a one-way conical valve (1-5), an inner top platform (1-8), and a drainage microchannel (1-9). The first water inlet (1-2) is a cuboid hole with a horizontal bottom plane; the second water inlet (1-3) is a cuboid hole with a horizontal bottom plane, the horizontal edge of the bottom plane of the second water inlet (1-3-a), the horizontal edge of the upper plane of the second water inlet (1-3-b), and the vertical edges of the two vertical planes of the second water inlet (1-3-c). 1) The interior includes an inner top platform (1-8), an inner right bottom plane (1-11), and an inner left bottom plane (1-12). The inner right bottom plane (1-11) and the inner left bottom plane (1-12) are on the same horizontal plane. The inner top platform (1-8) is a cuboid. The upper surface (1-10) of the inner top platform is horizontal. A drainage microchannel (1-9) is provided inside the inner top platform (1-8) and at the bottom of the base. A one-way conical valve (1-5) is provided in the drainage microchannel (1-9). There is an inlet flow line (1-6) at the inlet (1-1) and an outlet flow line (1-7) at the outlet (1-4). The frame (2) includes an upper vent (2-1), a bottom right vent (2-2), and a bottom left vent (2-3); The control cavity (4) includes a control cavity inlet (4-1), a control cavity outlet (4-2), four vertical inner walls (4-3), four vertical outer walls (4-4), a spring rod (4-5), a screw (4-6), and four control cavity vents (4-7). The control cavity (4) is rectangular in shape, with a straight opening facing downwards, and the four vertical walls are of equal thickness. The control cavity inlet (4-1) is a rectangular hole with a flat bottom. The control cavity outlet (4-2) is a cuboid hole, and the bottom plane of the control cavity outlet is horizontal; the control cavity inlet (4-1) and the control cavity outlet (4-2) are respectively located on two vertical walls of the opposite control cavity; the four vertical inner walls (4-3) of the control cavity are smooth with a roughness of N3, Ra0.1 and a dark gloss surface, and the four vertical outer walls (4-4) of the control cavity are smooth with a roughness of N3, Ra0.1 and a dark gloss surface; the spring (6) is sleeved on the screw (4-6); The core cavity (5) includes an inner cavity inlet (5-1), an inner cavity outlet (5-2), four vertical inner wall surfaces (5-3), four vertical outer wall surfaces (5-4), an outer top plane (5-5), and an inner top plane (5-6). The core cavity (5) is rectangular in shape, with a straight opening facing downwards. The five planar walls are of equal thickness. The bottom plane at the opening of the core cavity (5) is the same shape and size as the top plane (1-10) of the inner top platform. The inner cavity inlet (5-1) is a rectangular hole with a horizontal bottom plane. The inner cavity outlet (5-2) is a rectangular hole with a horizontal bottom plane. The inner cavity inlet (5-1) and the inner cavity outlet (5-2) are respectively located on two opposite vertical wall surfaces. The four vertical outer wall surfaces (5-4) of the inner cavity are smooth with a roughness of N3, Ra0.1, and a dark gloss. The core inner cavity (5) is tightly fitted inside the control inner cavity (4), with both openings facing vertically downwards. The control inner cavity (4) is inserted into the base (1), and the lower opening of the control inner cavity (4) is always tightly fitted onto the inner top platform (1-8). When the bottom plane of the opening of the core inner cavity (5) is at its lowest position, it rests on the upper plane (1-10) of the inner top platform. The first water inlet (1-2), the control cavity inlet (4-1), and the inner cavity inlet (5-1) are on the same side; the second water inlet (1-3), the control cavity outlet (4-2), and the inner cavity outlet (5-2) are on the same side. The dimensions of the base (1), control cavity (4), and core cavity (5) are set with x as a unit of length, and the dimensions of each key mechanical structure are as follows: The length of the four outer plane edges of the control cavity is (11) = 24x, the distance from the bottom plane of the control cavity inlet to the bottom plane of the opening is (22) = 10x, the length of the horizontal edge of the bottom plane of the control cavity inlet (4-1-)a is (101) = 7x, the length of the vertical edge of the two vertical planes of the control cavity inlet (4-1-c) is (202) = 3x, the distance from the bottom plane of the control cavity outlet to the bottom plane of the opening is (44) = 13x, the length of the horizontal edge of the bottom plane of the control cavity outlet (4-2-a) is (303) = 7x, the length of the vertical edge of the two vertical planes of the control cavity outlet (4-2-c) is (404) = 3x, and the distance from the horizontal edge of the top plane of the control cavity outlet (4-2-b) to the top plane of the cavity is (33) = 6.5x. The length of the four outer plane edges of the core cavity is (99) = 14.5x, the distance from the bottom plane of the inlet to the bottom plane of the opening is (1010) = 2x, the length of the horizontal edge of the bottom plane of the inlet is (5-1-a) is (1011) = 7x, the length of the vertical edge of the two vertical planes of the inlet is (5-1-c) is (909) = 3x, the distance from the bottom plane of the outlet is (111) = 5x, the length of the horizontal edge of the bottom plane of the outlet is (5-2-a) is (1101) = 4.6x, the length of the vertical edge of the two vertical planes of the outlet is (5-2-c) is (1102) = 3x, and the distance from the horizontal edge of the top plane of the outlet is (5-2-b) to the top plane of the cavity is (112) = 5x. The distance between the bottom plane of the first water inlet (1-2) and the left bottom plane (1-12) inside the base is (77) = 10x, the distance between the top plane of the inner top platform (1-10) and the left bottom plane (1-12) inside the base is (88) = 6x, the length of the horizontal side of the bottom plane of the first water inlet (1-2) is (808) = 7x, the length of the vertical side of the vertical plane of the first water inlet (1-2) is (707) = 7x, the distance between the horizontal side of the bottom plane of the second water inlet (1-3-a) and the right bottom plane (1-11) inside the base is (55) = 17x, the length of the horizontal side of the bottom plane of the second water inlet (1-3-a) is (606) = 7x, and the length of the vertical side of the two vertical planes of the second water inlet (1-3-c) is (505) = 3x.

Images