A pull-type liquid switch

Abstract

A pull type liquid switch comprises a valve core rod and a valve sleeve assembly, the valve core rod has a connecting end and a sealing end, a water flow channel is arranged in the valve core rod, a water outlet hole is arranged at the sealing end, an anti-backflow sealing ring, a rotatable positioning rotor and a reset member are arranged in the sealing section; a positioning boss is symmetrically arranged on the outer circumference of the positioning rotor; the valve sleeve assembly comprises a water outlet sleeve, a positioning sleeve and a steering sleeve which are connected with each other, an oblique tooth groove is arranged in the positioning sleeve, a straight groove extending to one end of the water outlet sleeve is arranged at the bottom of the groove; an oblique tooth corresponding to the oblique tooth groove is arranged on the steering sleeve; the positioning boss on the positioning rotor is guided through the oblique tooth and the oblique tooth groove, the positioning rotor rotates relative to the valve core rod, the positioning boss moves according to the guidance, and then the position of the valve core rod in the valve sleeve assembly is changed, so that the sealing state of the water outlet hole is changed; the operation is convenient and quick, the overall mechanism is simple, and the production and assembly are easier.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a pull-type liquid switch. Background Technology

[0002] In the field of fluid control, water valves, as key components for rapid opening, closing, and sealing in pipeline systems, are widely used in water supply and drainage applications. Their performance directly determines the operational safety, water resource utilization, and maintenance efficiency of the pipeline system. The performance of a water valve includes the reliability of its seal and the ease of operation. Reliable sealing typically requires the placement of sealing elements in appropriate locations; while ease of operation necessitates selecting a suitable water valve based on the specific application scenario. Traditional water valves often employ rotary or helical structures (such as ball valves and gate valves), requiring the valve core to be rotated using a handle or tool for opening and closing. This cumbersome operation (requiring 5-10 rotations per operation) makes them particularly unsuitable for rapid response in emergency water outage scenarios.

[0003] In everyday water systems, water valves are easily accessible, and toggle faucets are typically used to control the flow of water. However, in certain situations, such as when water is connected to a faucet for irrigation or cleaning, the water is far from the faucet. When it's necessary to stop the work, one must return to the faucet to turn it off, which wastes time and water resources. This is especially true when cleaning walls, solar panels, or roofs using ladders, which increases the risk of accidents. Therefore, it is necessary to design a new liquid switch to solve these problems. Summary of the Invention

[0004] The present invention aims to solve the technical problem that water valves in the prior art are not suitable for remote operation and opening / closing.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a pull-type liquid switch, comprising a valve core rod and a valve sleeve assembly arranged coaxially inside and outside the valve core rod, the valve core rod having a connecting end and a sealing end, the sealing end being located inside the valve sleeve assembly, and the connecting end extending to the outside of the valve sleeve assembly, a water flow channel penetrating the connecting end being formed axially inside the valve core rod, and a water outlet hole communicating with the water flow channel being formed radially at the sealing end, the valve core rod having a sealing section, a rotor mounting section, and a reset section sequentially arranged from the sealing end to the connecting end, the sealing section being fitted with an anti-backflow sealing ring; the rotor mounting section being fitted with an anti-backflow sealing ring; the valve core rod having a sealing section, a rotor mounting section, and a reset section being formed sequentially from the sealing end to the connecting end, the sealing ... The valve sleeve assembly is fitted with a rotatable positioning rotor; a reset component is fitted in the reset section; positioning bosses are symmetrically arranged on the outer circumference of the positioning rotor; a limiting helical tooth is provided inside the valve sleeve assembly, the limiting helical tooth having a limiting tooth top and a limiting tooth bottom, and a straight groove extending towards the water outlet sleeve end is opened at the bottom of the limiting tooth of a corresponding set of limiting helical teeth, the straight grooves being spaced apart on the limiting helical teeth; a steering helical tooth corresponding to the limiting helical tooth is also provided inside the valve sleeve assembly, the steering helical tooth having a steering tooth top and a steering tooth bottom, the straight groove corresponding to the steering tooth top.

[0006] This design involves pulling the valve core rod with the outlet blocked, causing the positioning boss on the positioning rotor to abut against the top of the steering gear. During the movement of the valve core rod, the positioning boss is guided by the steering gear, causing the positioning rotor to rotate. The positioning boss moves from the top to the bottom of the steering gear. Then, the valve core rod is released, and the positioning boss abuts against the limiting gear under the action of the reset component, at which point the outlet is open. Pulling the valve core rod again causes the positioning boss to abut against the steering gear and is guided by the steering gear, causing the positioning rotor to rotate. The positioning boss moves towards the bottom of the steering gear. Then, the valve core rod is released, and the positioning boss abuts against the limiting gear and is guided by the limiting gear into the straight groove. Finally, the blocking end of the valve core rod blocks the outlet. This design has a simple structure, and only the valve core rod needs to be pulled when opening or closing is required, enabling remote opening and closing and making operation convenient. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is an exploded structural diagram of an embodiment of the present utility model; Figure 3 This is a front view of an embodiment of the present utility model; Figure 4 for Figure 3 Sectional view of plane AA; Figure 5 This is a schematic diagram of the water outlet jacket in an embodiment of the present invention; Figure 6 This is a schematic diagram of the positioning sleeve in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the steering sleeve in an embodiment of the present utility model; Figure 8 This is a schematic diagram of the structure after the positioning sleeve is hidden in an embodiment of this utility model. Detailed Implementation

[0008] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0009] like Figures 1 to 8 As shown, a pull-type liquid switch includes a valve core rod 1 and a valve sleeve assembly 2 arranged coaxially inside and outside. The valve core rod 1 has a connecting end 11 and a sealing end 12. The sealing end 12 is located inside the valve sleeve assembly 2, and the connecting end 11 extends to the outside of the valve sleeve assembly 2. A water flow channel 13 is axially formed inside the valve core rod 1, penetrating the connecting end. A water inlet 110 is formed at the connecting end 11, which communicates with the water flow channel 13. A water outlet 14 is radially formed at the sealing end 12, which communicates with the water flow channel 13.

[0010] The valve core rod 1 is provided with a sealing section 101, a rotor mounting section 102 and a reset section 103 in sequence from the sealing end 12 to the connecting end 11. An anti-backflow sealing ring 3 is fitted on the sealing section 101. A rotatable positioning rotor 4 is fitted on the rotor mounting section 102. In this embodiment, the side wall of the positioning rotor 4 has an opening. The positioning rotor 4 is fastened to the rotor mounting section 102 by utilizing its own elasticity. There is a gap between the positioning rotor 4 and the rotor mounting section 102 to facilitate the rotation of the positioning rotor 4.

[0011] A reset element 5 is provided in the reset section 103. In this embodiment, the reset element 5 is a spring. Positioning bosses 41 are symmetrically provided on the outer circumference of the positioning rotor 4.

[0012] The valve sleeve assembly 2 includes an outlet sleeve 21, a positioning sleeve 22, and a steering sleeve 23 that are connected to each other. A connecting part 211 is formed on the end of the outlet sleeve 21 that is away from the positioning sleeve 22. The liquid switch is connected to other liquid channels through the connecting part 211. An outlet 212 is provided on the connecting part 211. A positioning ring 221 is provided inside the positioning sleeve 22. A number of limiting helical teeth 222 that are multiples of four are provided on the end face of the positioning ring 221 that is close to the steering sleeve 23. In this 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, etc.

[0013] The limiting helical tooth 222 has a limiting tooth top 2221 and a limiting tooth bottom 2222. The long limiting helical tooth 222 and the short limiting helical tooth 222 are a group. A straight groove 223 extending to one end of the water outlet sleeve 21 is opened at the bottom 2222 of the limiting tooth of the opposite group of limiting helical teeth 222. The straight groove 223 is spaced apart on the limiting helical tooth 222. At the end of the steering sleeve 23 near the positioning sleeve 22, there is a steering helical tooth 231 corresponding to the limiting helical tooth 222. The steering helical tooth 231 has a steering tooth top 2311 and a steering tooth bottom 2312. The straight groove 223 corresponds to the steering tooth top 2311.

[0014] In the initial state, the sealing end 12 of the valve core rod 1 abuts against the outlet 212 of the outlet sleeve 21, sealing the outlet 212. The positioning boss 41 is slidably placed in the straight groove 223. The liquid enters the water flow channel 13 from the inlet 110 and then flows out from the outlet hole 14 into the outlet sleeve 21. Since the outlet 212 of the outlet sleeve 21 is blocked, and an anti-backflow sealing ring 3 is fitted on the sealing section 101 of the valve core rod 1, the liquid is kept in the outlet sleeve 21.

[0015] Pulling the connecting end 11 of the valve core rod 1 causes the valve core rod 1 to move towards the steering sleeve 23. The positioning boss 41 moves from inside the straight groove 223 towards the top 2311 of the steering tooth of the steering helical tooth 231 until it abuts against the top 2311 of the steering tooth. Figure 8As shown, when the valve core rod 1 is pulled, since the positioning rotor 4 can rotate on the valve core rod 1, the positioning boss 41 is guided by the steering helical tooth 231 and moves towards the bottom 2312 of the steering tooth until it reaches the bottom 2312 of the steering tooth. Then the valve core rod 1 is released, and the valve core rod 1 moves towards the outlet sleeve 21 under the elastic force of the reset member 5 until the positioning boss 41 abuts against the limiting helical tooth 222. As the elastic force of the reset member 5 continues to push the valve core rod 1, the positioning boss 41 is guided by the limiting helical tooth 222 and moves towards the bottom 2222 of the limiting tooth until it can no longer move after reaching the bottom 2222 of the limiting tooth. At this time, the sealing end 12 of the valve core rod 1 is far away from the outlet 212 in the outlet sleeve 21, and the liquid in the water flow channel 13 flows out from the outlet hole 14 and then flows out from the outlet 212.

[0016] Pull the valve core rod 1 again to move it toward the steering sleeve 23. The positioning boss 41 moves from the bottom 2222 of the limiting tooth to the steering helical tooth 231 until it abuts against the steering helical tooth 231. At this time, continue to pull the valve core rod 1. The positioning boss 41 is guided by the steering helical tooth 231 and moves toward the bottom 2312 of the steering tooth until it reaches the bottom 2312 of the steering tooth. Then release the valve core rod 1. Due to the elastic force of the reset member 5, the valve core rod 1 moves toward the outlet sleeve 21 until the positioning boss 41 abuts against the limiting helical tooth 222. As the elastic force of the reset member 5 continues to push the valve core rod 1, the positioning boss 41 is moved toward the straight groove 223 by the limiting helical tooth 222 until the positioning boss 41 moves into the straight groove 223. The reset member 5 continues to push the valve core rod 1 toward the outlet 212 until the sealing end 12 of the valve core rod 1 seals the outlet 212.

[0017] like Figure 2 and Figure 4 As shown, the valve core rod 1 has an axially oriented mounting hole 15 at the sealing end 12, and a plug 6 is provided at the mounting hole 15. The plug 6 has a limiting part 61, which engages with the water outlet 14, so that the plug 6 is tightly connected to the valve core rod 1. An installation groove 62 is provided on the plug 6, and a water-stop sealing ring 7 is provided in the installation groove 62. The sealing end 12 abuts against the water outlet 212 of the water outlet sleeve 21, and the periphery of the water-stop sealing ring 7 abuts against the inner wall of the water outlet sleeve 21, so that water cannot flow out from the water outlet 212. The water-stop sealing ring 7 is located in the installation groove 62, ensuring that the water-stop sealing ring 7 will not be displaced due to water flow impact or valve core rod pulling during assembly and use, thus ensuring the stability of the sealing position.

[0018] Limiting protrusions 16 are provided at both ends of the rotor mounting section 102, and the positioning rotor 4 is positioned between the limiting protrusions 16. Both ends of the positioning rotor 4 abut against the limiting protrusions 16. Through the limiting of the limiting protrusions 16, the axial position of the positioning rotor 4 remains unchanged, and the matching accuracy of the positioning boss 41 with the limiting helical teeth 222 and the steering helical teeth (231) remains stable.

[0019] like Figure 2 and Figure 5 As shown, the water outlet sleeve 21 has a first fixing through hole 213 at one end near the positioning sleeve 22. The positioning ring 221 in the positioning sleeve 22 extends towards the water outlet sleeve 21 and protrudes from the positioning sleeve 22. It is divided by the straight groove 223 to form two symmetrical first connecting pieces 225. A first abutting part 226 is formed at the connection between the first connecting piece 225 and the positioning sleeve 22. A first fixing protrusion 224 is provided on the first connecting piece 225 and the first fixing through hole 213.

[0020] During assembly, the first connecting piece 225 is inserted into the water outlet sleeve 21, and the first fixing protrusion 224 is engaged in the first fixing through hole 213, so that the water outlet sleeve 21 and the positioning sleeve 22 are detachably connected. At the same time, the end face of the water outlet sleeve 21 near the positioning sleeve 22 abuts against the first abutting part 226, so that the relative position of the positioning sleeve 22 and the water outlet sleeve 21 is stable. Meanwhile, the first connecting piece 225 can be slightly deformed inward by pressing, so that the first fixing protrusion 224 is disengaged from the first fixing through hole 213, making it easy to separate the water outlet sleeve 21 and the positioning sleeve 22.

[0021] A stop 214 is provided at one end of the water outlet sleeve 21 near the water outlet 212. After the first connecting piece 225 is inserted into the water outlet sleeve 21, a limiting gap 200 is formed between the end of the first connecting piece 225 and the end of the stop 214. The anti-backflow sealing ring 3, which is sleeved on the valve core rod 1, is placed in the limiting gap 200. The anti-backflow sealing ring 3 is squeezed, so that the anti-backflow sealing ring 3 can press more tightly on the valve core rod 1, thereby preventing liquid leakage.

[0022] Two limiting grooves 215 are provided opposite to each other on the blocking part 214, and limiting protrusions 17 are symmetrically provided on the sealing end 12. The limiting protrusions 17 are slidably placed in the limiting grooves 215, so that the valve core rod 1 cannot rotate in the valve sleeve assembly 2. This prevents the valve core rod 1 from rotating as a whole during the process of pulling the valve core rod 1 or the valve core rod 1 being pushed by the reset part 5, so that the positioning rotor 4 sleeved on the valve core rod 1 rotates with the valve core rod 1, thereby causing the positioning boss 41 to be unable to accurately engage with the limiting helical teeth 222 and the steering helical teeth 231.

[0023] like Figure 6 and Figure 7As shown, the steering sleeve 23 includes a second abutment portion 232 and a helical tooth portion 233 connected to each other. The helical tooth portion 233 is hollow. The steering helical tooth 231 is disposed on the helical tooth portion 233. An outlet 234 is provided on the second abutment portion 232. The connecting end 11 of the valve core rod 1 extends through the outlet 234 to the outside of the valve sleeve assembly 2. A relief groove 236 is symmetrically provided axially at the end where the helical tooth portion 233 is connected to the second abutment portion 232. A second connecting piece 237 is symmetrically provided on both sides of the abutment counterbore 235. The second connecting piece 237 is located in the relief groove 236. A second fixing protrusion 238 is provided on the outside of the second connecting piece 237. A second fixing through hole 227 corresponding to the second fixing protrusion 238 is symmetrically provided on the side of the positioning sleeve 22 near the steering sleeve 23.

[0024] During assembly, the helical tooth 233 can be inserted into the positioning sleeve 22, and the second fixing protrusion 238 engages with the second fixing through hole 227, so that the steering sleeve 23 and the positioning sleeve 22 can be detachably connected. The end of the positioning sleeve 22 near the steering sleeve 23 abuts against the second abutting part 232, so that the relative position of the positioning sleeve 22 and the steering sleeve 23 will not easily change due to external force. At the same time, the second connecting piece 237 can be slightly deformed when pressed, so that the second fixing protrusion 238 disengages from the second fixing through hole 227, making it easy to separate the positioning sleeve 22 and the steering sleeve 23.

[0025] An abutment countersunk hole 235 is provided on the side where the second abutment portion 232 connects to the helical tooth portion 233. The abutment countersunk hole 235 is connected to the outlet 234. One end of the reset member 5 is placed in the abutment countersunk hole 235, and the other end of the reset member 5 abuts against the end face of the limiting protrusion ring 16 on the rotor mounting section 102. When the valve core rod 1 is pulled, the limiting protrusion ring 16 compresses the reset member 5 toward the abutment countersunk hole 235.

[0026] The above solution guides the positioning boss 41 on the positioning rotor 4 through the steering helical gear 231 and the limiting helical gear 222. The positioning rotor 4 rotates relative to the valve core rod 1, and the positioning boss 41 moves according to the guide, thereby changing the position of the valve core rod 1 in the valve sleeve assembly 2, thus changing the blocking state of the outlet 212. The overall structure of this solution is simple, making production and assembly easier and reducing production costs. At the same time, in use, the water flow can be turned on and off simply by pulling the water pipe connected to the connecting end 11. It is not necessary to walk from the outlet end of the water pipe to the faucet end to turn off the faucet, nor is it necessary to come down from the roof to turn off the faucet. The operation is convenient and quick.

Claims

1. A pull-type liquid switch, comprising a valve core rod (1) and a valve sleeve assembly (2) arranged coaxially inside and outside, the valve core rod (1) having a connecting end (11) and a sealing end (12), the sealing end (12) being disposed inside the valve sleeve assembly (2), the connecting end (11) extending to the outside of the valve sleeve assembly (2), a water flow channel (13) penetrating the connecting end being axially formed inside the valve core rod (1), and a water outlet hole (14) communicating with the water flow channel (13) being radially formed on the sealing end (12), characterized in that: The valve core rod (1) is provided with a sealing section (101), a rotor mounting section (102) and a reset section (103) in sequence from the sealing end (12) to the connecting end (11). An anti-backflow sealing ring (3) is provided on the sealing section (101); a rotatable positioning rotor (4) is provided on the rotor mounting section (102); a reset component (5) is provided on the reset section (103); and positioning bosses (41) are symmetrically provided on the outer circumference of the positioning rotor (4). The valve sleeve assembly (2) is provided with a limiting helical tooth (222). The limiting helical tooth (222) has a limiting tooth top (2221) and a limiting tooth bottom (2222). A straight groove (223) extending to one end of the water outlet sleeve (21) is opened at the bottom (2222) of the limiting tooth of a pair of limiting helical teeth (222). The straight grooves (223) are spaced apart on the limiting helical teeth (222). The valve sleeve assembly (2) is also provided with a steering helical tooth (231) corresponding to the limiting helical tooth (222). The steering helical tooth (231) has a steering tooth top (2311) and a steering tooth bottom (2312). The straight groove (223) corresponds to the steering tooth top (2311).

2. The pull-type liquid switch according to claim 1, characterized in that: The valve sleeve assembly (2) includes an outlet sleeve (21), a positioning sleeve (22), and a steering sleeve (23) connected to each other. A positioning ring (221) is provided inside the positioning sleeve (22). The limiting helical teeth (222) are provided on the end face of the positioning ring (221) near the steering sleeve (23). The number of limiting helical teeth (222) is a multiple of four. The steering helical tooth (231) is located at one end of the steering sleeve (23) near the positioning sleeve (22).

3. The pull-type liquid switch according to claim 1, characterized in that: An installation hole (15) is provided axially at the sealing end (12) of the valve core rod (1), and a plug (6) is provided at the installation hole (15). The plug (6) has a limiting part (61), which engages with the water outlet (14) so ​​that the plug (6) is tightly connected to the valve core rod (1). An installation groove (62) is provided on the plug (6), and a water-stop sealing ring (7) is provided in the installation groove (62).

4. The pull-type liquid switch according to claim 1, characterized in that: Limiting rings (16) are provided at both ends of the rotor mounting section (102), and the positioning rotor (4) is positioned between the limiting rings (16), with both ends of the positioning rotor (4) abutting against the limiting rings (16).

5. The pull-type liquid switch according to claim 1, characterized in that: The end of the water outlet sleeve (21) away from the positioning sleeve (22) extends outward to form a connecting part (211), and a water outlet (212) is provided on the connecting part (211). A first fixing through hole (213) is provided at one end of the water outlet sleeve (21) near the positioning sleeve (22), and a corresponding first fixing protrusion (224) is provided on the positioning sleeve (22). The first fixing protrusion (224) is engaged in the first fixing through hole (213), so that the water outlet sleeve (21) and the positioning sleeve (22) can be detachably connected. A stop part (214) is provided at one end of the water outlet sleeve (21) near the water outlet (212), and two limiting grooves (215) are provided on the stop part (214).

6. The pull-type liquid switch according to claim 5, characterized in that: A limiting protrusion (17) is symmetrically provided on the sealing end (12). The limiting protrusion (17) is slidably placed in the limiting groove (215), so that the valve core rod (1) cannot rotate in the valve sleeve assembly (2).

7. The pull-type liquid switch according to claim 2, characterized in that: The positioning ring (221) extends toward the outlet sleeve (21) and out of the positioning sleeve (22), and is divided by the straight groove (223) to form two symmetrical first connecting pieces (225). A first abutting part (226) is formed at the connection between the first connecting piece (225) and the positioning sleeve (22). The first fixing protrusion (224) is located on the outside of the first connecting piece (225). The first connecting piece (225) can be inserted into the water outlet sleeve (21) so that the first fixing protrusion (224) is engaged in the first fixing through hole (213). At this time, the end of the water outlet sleeve (21) near the positioning sleeve (22) abuts against the first abutting part (226).

8. The pull-type liquid switch according to claim 7, characterized in that: The steering sleeve (23) includes a second abutment portion (232) and a helical tooth portion (233) connected to each other. The helical tooth portion (233) is hollow. The steering helical tooth (231) is disposed on the helical tooth portion (233). An outlet (234) is provided on the second abutment portion (232). The connecting end (11) of the valve core rod (1) extends through the outlet (234) to the outside of the valve sleeve assembly (2). An abutment countersunk hole (235) is provided on the side where the second abutment part (232) is connected to the helical tooth part (233). The abutment countersunk hole (235) is connected to the outlet (234), and one end of the reset member (5) is placed in the abutment countersunk hole (235).

9. The pull-type liquid switch according to claim 8, characterized in that: A relief groove (236) is symmetrically provided at one end where the helical tooth part (233) connects to the second abutment part (232). A second connecting piece (237) is symmetrically provided on both sides of the abutment countersunk hole (235). The second connecting piece (237) is located in the relief groove (236). A second fixing protrusion (238) is provided on the outside of the second connecting piece (237).

10. The pull-type liquid switch according to claim 9, characterized in that: A second fixing through hole (227) corresponding to the second fixing protrusion (238) is symmetrically opened on the side of the positioning sleeve (22) near the steering sleeve (23). The helical tooth (233) can be inserted into the positioning sleeve (22). At this time, the second fixing protrusion (238) is engaged in the second fixing through hole (227), and the end of the positioning sleeve (22) near the steering sleeve (23) abuts against the second abutting part (232).

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