A pull-out liquid switch

Abstract

A pullable liquid switch comprising an internally and externally coaxially arranged valve core rod (1) and a valve sleeve assembly (2), wherein the valve core rod (1) has a connecting end (11) and a sealing end (12), the sealing end (12) is arranged inside the valve sleeve assembly (2), the connecting end (11) projects outwards beyond the valve sleeve assembly (2), a continuous water flow channel (13) is provided in the valve core rod (1) along the axis, which passes through the connecting end, and an outlet hole (14) connected to the water flow channel (13) is arranged radially at the sealing end (12), characterized in that: The valve core rod (1) has, from the sealing end (12) to the connection end (11), successively a sealing section (101), a rotor mounting section (102) and a return section (103) is arranged; a backflow prevention seal (3) is attached to the sealing section (101); the rotatable positioning rotor (4) is attached to the rotor mounting section (102); a return element (5) is attached to the return section (103); symmetrical positioning cams (41) are arranged on the outer circumference of the positioning rotor (4); The valve sleeve assembly (2) is arranged with a limiting helical toothing (222), the limiting helical toothing (222) has a limiting tooth head (2221) and a limiting tooth root (2222), straight grooves (223) are arranged in the limiting tooth roots (2222) of an opposite group from the limiting helical toothing (222), which extend in the direction of the outlet sleeve (21), the straight grooves (223) are spaced apart on the limiting helical toothing (222); The valve sleeve assembly (2) is also arranged with deflection helical gears (231) that mesh with the limiting helical gear (222). The deflection helical gear (231) has a deflection tooth head (2311) and a deflection tooth root (2312), with the straight groove (223) corresponding to the deflection tooth head (2311).

Description

Technical field

[0001] The present utility model relates to the field of valve technology, in particular to a pullable liquid switch. State of the art

[0002] In the field of fluid control, water fittings are widely used as key components in piping systems for rapid opening / closing and leak-tightness, for example, in water supply and drainage applications. Their performance directly determines the operational reliability of the piping system, water usage efficiency, and maintenance efficiency. Fitting performance encompasses the reliability of the seal and ease of use. Seal reliability is typically achieved by placing gaskets in appropriate locations; ease of use requires selecting a suitable fitting based on the actual usage scenario. Traditional fittings mostly use rotary or screw-type designs (such as ball valves or stopcocks), where the valve core must be rotated by a lever or tool to open and close.The operating process is cumbersome (opening or closing once requires 5-10 turns), which prevents a quick response, especially in scenarios with an urgent water stop.

[0003] Since faucets are within easy reach in everyday water use, toggle faucets are typically used to turn the water flow on and off. However, in certain situations, such as when connecting a hose to the faucet for irrigation or cleaning, the watering or cleaning area is far from the faucet. If the work needs to be interrupted, one has to return to the faucet to turn it off. This process is time-consuming and leads to water waste. The risk is particularly high when cleaning walls, solar panels, or roofs using a ladder. Therefore, it is necessary to design a new type of flow switch to solve these problems. Content of the present utility model

[0004] The present utility model solves the technical problem that, in the prior art, faucets are not suitable for remote control of switching on and off.

[0005] To achieve the above-mentioned objective, the technical solution of the utility model is as follows: A pullable liquid switch comprising an internally and externally coaxially arranged valve core rod and a valve sleeve assembly, wherein the valve core rod has a connecting end and a sealing end, and the sealing end is arranged in the valve sleeve assembly and the connecting end projects outwards beyond the valve sleeve assembly, wherein a water flow channel penetrating the connecting end is axially arranged in the valve core rod, and an outlet connected to the water flow channel is arranged radially at the sealing end.The valve core rod has, from the sealing end to the connection end, a sealing section, a rotor mounting section and a reset section in succession, wherein a non-return sealing ring is arranged on the sealing section; a rotatable positioning rotor is arranged on the rotor mounting section; a reset element is arranged on the reset section; symmetrically positioned positioning projections are arranged on the outer circumference of the positioning rotor; limiting helical teeth are arranged in the valve sleeve assembly, each limiting helical tooth having a limiting tooth head and a limiting tooth root.Straight grooves are arranged on the limiting tooth roots of an opposing group of limiting helical teeth, extending in the direction of the outlet sleeve, and the straight grooves on the limiting helical teeth are arranged at intervals; in the valve sleeve assembly, deflecting helical teeth corresponding to the limiting helical teeth are also arranged, and the deflecting helical teeth have a deflecting tooth head and a deflecting tooth root, the straight grooves corresponding to the deflecting tooth heads.

[0006] In this solution, the valve core rod is pulled with the outlet closed, so that the positioning projection on the positioning rotor rests against the deflection tooth head of the deflection helical gears. During the movement of the valve core rod, the positioning projection is guided through the deflection helical gears, which rotates the positioning rotor, and the positioning projection moves from the deflection tooth head to the deflection tooth root. Subsequently, the valve core rod is released, and the positioning projection, under the action of the return element, strikes the limiting helical gear, thereby opening the water outlet. When the valve core rod is pulled again, so that the positioning projection is once more resting against the deflection helical gears and guided through them, the positioning rotor rotates, and the positioning projection moves to the underside of the tooth.Subsequently, when the valve core rod is released, the positioning projection engages the limiting helical teeth and is guided by them into the straight groove, at which point the sealing end of the valve core rod blocks the outlet. This solution is simple in design, allows for remote actuation by simply pulling the valve core rod, and is user-friendly. Brief description of the drawings Fig. Figure 1 is a schematic representation of the overall structure of the embodiment of the present utility model; Fig. Figure 2 is a schematic representation of the disassembled structure of the embodiment of the present utility model; Fig. Figure 3 is the front view of the embodiment of the present utility model; Fig. 4 shows the AA section in Fig. ; Fig. Figure 5 is a schematic structural diagram of the outlet pipe in the embodiment of the present utility model; Fig. Figure 6 is a schematic structure diagram of the positioning bushing in the embodiment of the present utility model; Fig. Figure 7 is a schematic structure diagram of the deflection sleeve in the embodiment of the present utility model; Fig. Figure 8 is a schematic structure diagram after concealing the positioning bushing in the embodiment of the present utility model. Detailed description

[0007] The present utility model will be explained in more detail below with reference to the attached illustrations and specific examples of its implementation.

[0008] As in the Fig. , Fig. , Fig. , Fig. , Fig. , Fig. , Fig. until Fig. The figure shows a retractable liquid switch comprising a coaxially arranged valve core rod 1 and a valve sleeve assembly 2, wherein the valve core rod 1 has a connecting end 11 and a sealing end 12, the sealing end 12 being arranged within the valve sleeve assembly 2 and the connecting end 11 extending outwards over the valve sleeve assembly 2. A water flow channel 13 is arranged in the valve core rod 1, which penetrates the connecting end, a water inlet 110 is open at the connecting end 11, the water inlet 110 being connected to the water flow channel 13, and a water outlet 14 is arranged radially at the sealing end 12, which is connected to the water flow channel 13.

[0009] The valve core rod 1 is arranged successively from the sealing end 12 to the connection end 11 with a sealing section 101, a rotor mounting section 102, and a return section 103, wherein a non-return sealing ring 3 is attached to the sealing section 101; a rotatable positioning rotor 4 is mounted on the rotor mounting section 102. In this embodiment, the side wall of the positioning rotor 4 has an opening, and the positioning rotor 4 is attached to the rotor mounting section 102 by means of its elasticity. A gap exists between the positioning rotor 4 and the rotor mounting section 102 to allow the rotation of the positioning rotor 4.

[0010] A return element 5 is arranged on the return section 103. In the present embodiment, the return element 5 is a spring; symmetrically arranged positioning projections 41 are arranged on the outer circumferential surface of the positioning rotor 4. The valve sleeve assembly 2 comprises an interconnected outlet sleeve 21, a positioning bushing 22, and a deflecting sleeve 23. A connecting section 211 extends outwards from the end of the outlet sleeve 21 furthest from the positioning bushing 22, through which the liquid switch can be connected to another liquid channel. A water outlet 212 is arranged on the connecting section 211; a positioning ring 221 is arranged in the positioning bushing 22, and a multiple number of limiting helical teeth 222 are arranged on the end face of the positioning ring 221 facing the deflecting sleeve 23.In the present embodiment, the number of limiting helical teeth 222 is four; in other embodiments, the number of limiting helical teeth 222 can be eight or twelve.

[0011] The limiting helical gear 222 has a limiting tooth tip 2221 and a limiting tooth root 2222. Long and short limiting helical gears 222 each form a pair. Straight grooves 223 are arranged on the limiting tooth roots 2222 of the opposing pair of limiting helical gears 222, extending to one end of the outlet sleeve 21. The straight grooves 223 are arranged at intervals on the limiting helical gears 222; a deflecting helical gear 231 corresponding to the limiting helical gear 222 is arranged at the end of the deflecting sleeve 23 facing the positioning bushing 22. The deflecting helical gear 231 has a deflecting tooth tip 2311 and a deflecting tooth root 2312, with the straight groove 223 corresponding to the deflecting tooth tip 2311.

[0012] In its initial state, the sealing end 12 of the valve core rod 1 rests against the water outlet 212 of the outlet sleeve 21 to block the water outlet 212. The positioning projection 41 is slidably positioned in the straight groove 223. Liquid enters the water flow channel 13 through the water inlet 110 and then flows through the outlet openings 14 into the outlet sleeve 21. Since the water outlet 212 of the outlet sleeve 21 is blocked and a non-return sealing ring 3 is fitted to the sealing section 101 of the valve core rod 1, the liquid is retained in the outlet sleeve 21.

[0013] The connecting end 11 of the valve core rod 1 moves towards the deflecting sleeve 23. The positioning projection 41 moves from the straight groove 223 to the deflecting helical tooth head 2311 of the deflecting helical toothing 231 until it abuts the deflecting helical tooth head 2311, as shown in Fig. The valve core rod 1 is then pulled further. Since the positioning rotor 4 can rotate on the valve core rod 1, the positioning projection 41 is guided by the deflecting helical gear 231 and moves towards the deflecting helical gear root 2312 until it reaches the deflecting helical gear root 2312. The valve core rod 1 is then released, and under the spring force of the return element 5, the valve core rod 1 moves towards the outlet sleeve 21 until the positioning projection 41 abuts the limiting helical gear 222. While the spring force of the return element 5 continues to act on the valve core rod 1, the positioning projection 41 is guided by the limiting helical gear 222 to the limiting helical gear root 2222 until it reaches the limiting helical gear root 2222 and can move no further. At this point, the sealing end 12 of the valve core rod 1 is removed from the water outlet 212 in the outlet sleeve 21.The liquid in the water flow channel 13 flows out of the outlet opening 14 and then further out of the water outlet 212.

[0014] The valve core rod 1 is pulled again to move it towards the deflection sleeve 23. The positioning projection 41 moves from the limiting tooth root 2222 to the deflection helical gear 231 until it abuts the deflection helical gear 231. At this point, the valve core rod 1 is pulled further, the positioning projection 41 is guided through the deflection helical gear 231 and moves to the deflection helical tooth root 2312 until it reaches the deflection helical tooth root 2312. Subsequently, the valve core rod 1 is released, and due to the spring force of the return element 5, it moves towards the outlet sleeve 21 until the positioning projection 41 abuts the limiting helical gear 222.While the spring force of the return element 5 continues to press on the valve core rod 1, the positioning projection 41 is moved by the limiting helical teeth 222 towards the straight groove 223 until the positioning projection enters the straight groove 223. The return element 5 pushes the valve core rod 1 further towards the outlet 212 until the sealing end 12 of the valve core rod 1 closes the outlet 212.

[0015] As in Fig. and Fig. As shown, a mounting bore 15 is axially open at the sealing end 12 of the valve core rod 1, and a plug 6 is arranged at the mounting bore 15. The plug 6 has a limiting section 61, which engages with the outlet opening 14, thereby firmly connecting the plug 6 to the valve core rod 1. A mounting groove 62 is provided on the plug 6, and a watertight ring 7 is arranged in the mounting groove 62. The sealing end 12 rests against the water outlet 212 of the outlet sleeve 21, while the circumference of the watertight ring 7 rests against the inner wall of the outlet sleeve 21, so that no water can escape from the water outlet 212. The waterproof ring 7 is located in the mounting groove 62 to ensure that the waterproof ring 7 does not slip during installation and use due to water flow or pull on the valve core rod, thus ensuring the stability of the sealing position.

[0016] Limiting collar rings 16 are arranged at both ends of the rotor mounting section 102. The positioning rotor 4 is arranged between the limiting collar rings 16, with both ends of the positioning rotor 4 bearing against the limiting collar rings 16; the limiting collar rings 16 ensure that the axial position of the positioning rotor 4 remains unchanged, and the fit between the positioning projection 41 and the limiting helical gears 222 and the deflecting helical gears (231) remains consistently stable.

[0017] As in Fig. and Fig. As shown, a first fastening through-hole 213 is opened at the end of the outlet sleeve 21 near the positioning bushing 22, the positioning ring 221 in the positioning sleeve 22 extends to the side of the outlet sleeve 21 and projects out of the positioning bushing 22, and is divided by the straight groove 223 into two symmetrical first connecting lamellae 225, wherein a first stop section 226 is formed at the connection point between the first connecting lamella 225 and the positioning bushing 22; a first fastening projection 224 is arranged on the first connecting lamella 225, which coincides with the first fastening through-hole 213.

[0018] During assembly, the first connecting lamella 225 is inserted into the outlet sleeve 21, and the first fastening projection 224 engages in the first fastening through-hole 213, thereby detachably connecting the outlet sleeve 21 and the positioning bushing 22. Simultaneously, the end face of the outlet sleeve 21 rests against the first stop section 226 near the positioning bushing 22, thus stabilizing the relative position between the positioning bushing 22 and the outlet sleeve 21. At the same time, the first connecting lamella 225 can deform slightly inwards under pressure, allowing the first fastening projection 224 to disengage from the first fastening through-hole 213, thus enabling easy separation of the outlet sleeve 21 and positioning bushing 22.

[0019] A deflector section 214 is arranged at the end of the outlet sleeve 21 near the outlet 212. After the first connecting lamella 225 is inserted into the outlet sleeve 21, a limiting gap 200 forms between the end of the first connecting lamella 225 and the end of the deflector section 214. The non-return sealing ring 3, attached to the valve core rod 1, is placed in this limiting gap 200, and the non-return sealing ring 3 is compressed so that it is pressed more tightly onto the valve core rod 1, thus preventing leakage of liquid. Two limiting grooves 215 are arranged relative to each other on the deflector section 214. Symmetrically arranged limiting projections 17 are arranged at the sealing end 12.The limiting projections 17 are slidably positioned in the limiting grooves 215, which prevents the valve core rod 1 from rotating within the valve sleeve assembly 2, thus preventing the valve core rod 1 from rotating as a whole while the valve core rod 1 is being pulled or the valve core rod 1 from being pushed back by the return element 5, which would cause the positioning rotor 4 arranged on the valve core rod 1 to follow and rotate with the valve core rod 1, which in turn could result in the positioning projection 41 not engaging precisely with the limiting helical teeth 222 and the deflecting helical teeth 231.

[0020] As in the Fig.As shown, the deflecting sleeve 23 comprises a second stop section 232 and a helical toothed section 233, which are connected to each other. The helical toothed section 233 is hollow, and the deflecting helical toothing 231 is arranged on the helical toothed section 233. An outlet 234 is arranged on the second stop section 232, and the connecting end 11 of the valve core rod 1 passes through the outlet and extends outwards to the valve sleeve assembly 2. At one end of the helical toothed section 233, which is connected to the second stop section 232, axially symmetrical recess grooves 236 are open.On both sides of the countersunk stop bore 235, symmetrically arranged second connecting lamellae 237 are located, the second connecting lamella is located in the recess groove 236, and on the outside of the second connecting lamellae 237 a second fastening projection 238 is arranged; On one side of the positioning bushing 22, which faces the deflecting sleeve 23, symmetrically opened second fastening through bores 227 are located, which correspond to the second fastening projections 238.

[0021] During assembly, the helical gear section 233 can be inserted into the positioning bushing 22, and the second retaining projection 238 engages in the second retaining through-hole 227, thus connecting the deflecting sleeve 23 and the positioning bushing 22 in a detachable manner. The end of the positioning bushing 22 near the deflecting sleeve 23 rests against the second stop section 232, so that the relative positioning of the positioning bushing 22 and the deflecting sleeve 23 is not easily altered by external forces; at the same time, the second connecting plate 237 can be easily deformed by pressure, so that the second retaining projection 238 disengages from the second retaining through-hole 227, thereby allowing easy separation of the positioning bushing 22 and the deflecting sleeve 23.

[0022] On the side where the second stop section 232 is connected to the helical tooth section 233, a stop counterbore 235 is arranged, and the stop counterbore 235 is connected to the outlet 234. One end of the return element 5 is located in the stop counterbore 235, and the other end of the return element 5 rests against the end face of the limiting collar 16 on the rotor mounting section 102. When the valve core rod 1 is pulled, the limiting collar 16 compresses the return element 5 towards the stop counterbore 235.

[0023] The above-mentioned scheme guides the positioning projection 41 on the positioning rotor 4 via the deflecting helical gear 231 and the limiting helical gear 222. The positioning rotor 4 rotates relative to the valve core rod 1, and the positioning projection 41 moves according to the guidance, thereby changing the position of the valve core rod 1 in the valve sleeve assembly 2, thus changing the closing state of the water outlet 212. The scheme has a simple overall structure, which facilitates production and assembly and reduces production costs. Furthermore, in use, only the water hose connected to the terminal end 11 needs to be pulled to turn the water flow on and off. There is no need to walk from the hose outlet to the tap to close it, let alone climb down from the roof to turn off the tap. Operation is convenient and quick.

Claims

[1] A pullable liquid switch comprising an internally and externally arranged valve core rod (1) and a valve sleeve assembly (2), wherein the valve core rod (1) has a connecting end (11) and a sealing end (12), the sealing end (12) is arranged inside the valve sleeve assembly (2), the connecting end (11) projects outwards beyond the valve sleeve assembly (2), a continuous water flow channel (13) is provided in the valve core rod (1) along the axis through which the connecting end passes, and an outlet hole (14) connected to the water flow channel (13) is arranged radially at the sealing end (12), characterized by , that: The valve core rod (1) has, from the sealing end (12) to the connection end (11), successively a sealing section (101), a rotor mounting section (102) and a return section (103) is arranged; a backflow prevention seal (3) is attached to the sealing section (101); the rotatable positioning rotor (4) is attached to the rotor mounting section (102); a return element (5) is attached to the return section (103); symmetrical positioning cams (41) are arranged on the outer circumference of the positioning rotor (4); The valve sleeve assembly (2) is arranged with a limiting helical toothing (222), the limiting helical toothing (222) has a limiting tooth head (2221) and a limiting tooth root (2222), straight grooves (223) are arranged in the limiting tooth roots (2222) of an opposite group from the limiting helical toothing (222), which extend in the direction of the outlet sleeve (21), the straight grooves (223) are spaced apart on the limiting helical toothing (222); The valve sleeve assembly (2) is also arranged with deflection helical gears (231) that mesh with the limiting helical gear (222). The deflection helical gear (231) has a deflection tooth head (2311) and a deflection tooth root (2312), with the straight groove (223) corresponding to the deflection tooth head (2311). [2] A pullable liquid switch according to claim 1, characterized by , that the valve sleeve assembly (2) comprises an interconnected outlet sleeve (21), a positioning sleeve (22) and a deflecting sleeve (23), wherein a positioning ring (221) is arranged in the positioning sleeve (22), the limiting helical teeth (222) are arranged on the end surface region of the positioning ring (221) facing the deflecting sleeve (23), and the number of teeth of the limiting helical teeth (222) is a multiple of four; the deflecting helical teeth (231) are arranged at the end of the deflecting sleeve (23) near the positioning sleeve (22). [3] A pullable liquid switch according to claim 1, characterized by , that a mounting bore (15) is arranged axially at the sealing end (12) of the valve core rod (1), wherein a plug (6) is attached to the mounting bore (15); The plug (6) has a limiting part (61) which engages with the water outlet hole (14), thereby firmly connecting the plug (6) to the valve core rod (1). A mounting groove (62) is provided on the plug (6), and a watertight ring (7) is arranged inside the mounting groove (62). [4] A pullable liquid switch according to claim 1, characterized by , that the rotor assembly section (102) is arranged at both ends with a limiting collar ring (16), wherein the positioning rotor (4) is arranged between the limiting collar rings (16), and both ends of the positioning rotor (4) are in contact with the limiting collar rings (16). [5] A pullable liquid switch according to claim 1, characterized by, that the outlet sleeve (21) extends outwards at an end that is away from the positioning bushing (22) to form a connecting section (211) with an outlet (212) open at the connecting section (211); At the end of the water outlet sleeve (21), which is located near the positioning bushing (22), a first fastening through-hole (213) is arranged, and a corresponding first fastening projection (224) is arranged on the positioning bushing (22), wherein the first fastening projection (224) engages in the first fastening through-hole (213), so that the outlet sleeve (21) and the positioning bushing (22) can be detachably connected to each other; Inside the outlet sleeve (21) a stop element (214) is arranged near the outlet (212), the stop element (214) being open with two opposing limiting grooves (215). [6] A pullable liquid switch according to claim 5, characterized by, that the sealing end (12) is arranged symmetrically with limiting projections (17), wherein the limiting projections (17) are arranged slidingly in the limiting grooves (215) so that the valve core rod (1) cannot be rotated in the valve sleeve assembly (2). [7] A pullable liquid switch according to claim 1, characterized byThe positioning ring (221) extends towards the outlet sleeve (21) and the positioning bushing (22) protrudes. The straight groove (223) divides the opening into two symmetrical first connecting sections (225), with a first stop section (226) formed at the connecting section between the first connecting lamella (225) and the positioning bushing (22). The first fastening projection (224) is located on the outside of the first connecting lamella (225), allowing the first connecting lamella (225) to be inserted into the outlet sleeve (21) so that the first fastening projection (224) engages in the first fastening through-hole (213). At this point, the end of the outlet sleeve (21) rests against the first stop section (226) near the positioning bushing (22). [8] A pullable liquid switch according to claim 7, characterized by, that the deflecting sleeve (23) comprises a second stop section (232) and a helical toothed section (233) which are connected to each other, wherein the helical toothed section (233) is hollow, the deflecting helical toothing (231) is arranged on the helical toothed section (233), and an outlet (234) is arranged in the second stop section (232), wherein the connecting end (11) of the valve core rod (1) passes through the outlet (234) and projects outwards beyond the valve sleeve assembly (2); on the side where the second stop section (232) is connected to the helical toothed section (233), a stop counterbore (235) is open, wherein the stop counterbore (235) is connected to the outlet (234), and an end of the return part (5) is arranged inside the stop counterbore (235). [9] A pullable liquid switch according to claim 8, characterized by, that at the end where the helical gear section (233) is connected to the second stop section (232), axially symmetrical recess grooves (236) are arranged, wherein second connecting lamellae (237) are arranged symmetrically on both sides of the stop counterbore (235), wherein the second connecting lamellae (237) lie in the recess grooves (236), and wherein second fastening projections (238) are arranged on the outside of the second connecting lamellae (237). [10] A pullable liquid switch according to claim 9, characterized by, that on the side of the positioning bushing (22) near the deflecting sleeve (23) symmetrically arranged second fastening through holes (227) which correspond to the second fastening projections (238), wherein the helical toothed section (233) can be inserted into the positioning bushing (22), wherein the second fastening projections (238) snap into the second fastening through holes (227), and the end of the positioning bushing (22) near the deflecting sleeve (23) abuts the second stop section (232).

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