Pull type water stop valve

Abstract

The utility model discloses a pull type water stop valve which comprises a valve element rod and a valve sleeve which are coaxially arranged inside and outside. The valve element rod is sleeved with a positioning rotor capable of rotating in the circumferential direction, a sealing groove capable of abutting against the end of the valve element rod in a sealed mode is formed in the end, corresponding to a water outlet of the valve element rod, of the valve sleeve, a water outlet channel is formed in the bottom wall of the sealing groove, and the end, provided with the water outlet, of the valve element rod can be matched with or separated from the sealing groove in a sealed mode by pulling the valve element rod in the axial direction of the valve sleeve. Opening and closing are directly controlled by axially pulling the valve element rod, the operation stroke is shorter, more operation time is saved compared with a traditional rotary valve, and the emergency water stopping requirement is met. Clear gear feedback can be provided through the meshing design of the positioning rotor and the tooth grooves, and misoperation is avoided. And through multiple sealing and modular design, the core defects of an existing water stop valve are systematically overcome, and the water stop valve has remarkable advantages in the aspects of operation efficiency, sealing reliability, maintenance cost and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a pull type water stop valve. BACKGROUND

[0002] In the field of fluid control, water stop valves, as key components for achieving rapid opening and closing and sealing in pipeline systems, are widely used in scenarios such as water supply and drainage, fire protection, and industrial pipelines. However, existing water stop valves have significant shortcomings in terms of operational convenience, sealing reliability, and structural adaptability:

[0003] Low operational efficiency and insufficient emergency response; traditional water stop valves mostly adopt rotary or spiral structures (such as ball valves and gate valves), which require rotating the valve core through a handle or tool to achieve opening and closing. The operation steps are cumbersome (5-10 rotations are required for single opening and closing), and especially in emergency water stop scenarios, they cannot respond quickly. For example, the delay in opening and closing of traditional valves in fire protection systems may lead to delayed fire control, increasing safety risks. Poor sealing reliability, prone to leakage; the sealing of existing valves relies on the contact between a single sealing ring or the valve core and the valve seat. After long-term use, leakage may occur due to wear (such as aging of the sealing ring and deviation of the valve core). Complex structure, high maintenance cost; some high-end water stop valves use multi-component linkage structures (such as gear transmission and hydraulic control), which improve sealing performance but have a large number of components (≥10 assemblies), making installation and debugging complex. Moreover, if a fault occurs, the entire device needs to be disassembled, increasing maintenance time and cost by more than 30%. In addition, the opening and closing states of traditional valves lack visual feedback, making it difficult to quickly determine whether the valve is fully open or closed. SUMMARY

[0004] In view of the defects in the prior art, the utility model aims to provide a pull type water stop valve, which adopts a pull type to implement opening and closing, has the advantages of rapid response and convenient operation.

[0005] The utility model employs the technical scheme: a pull type water stop valve, comprising a valve core rod and a valve sleeve arranged coaxially inside and outside, a water inlet channel is arranged in the valve core rod, a water inlet is arranged at one end of the valve core rod and connected to the water inlet channel, a water outlet is arranged at the other end of the valve core rod and connected to the water inlet channel, a positioning rotor that can rotate circumferentially is sleeved on the valve core rod, a sawtooth part is arranged around the outer periphery of the positioning rotor, an external tooth groove part is arranged on the outer periphery of the valve core rod and engaged with the sawtooth part, an internal tooth groove part is arranged on the inner wall of the valve sleeve and engaged with the sawtooth part, two kinds of tooth grooves with different depths are alternately arranged on the internal tooth groove part, a spring piece that elastically supports the positioning rotor is further sleeved on the valve core rod, a sealing groove that can be sealed against the end of the valve core rod is arranged at the end of the valve core rod with the water outlet of the valve sleeve, a water outlet channel is arranged on the bottom wall of the sealing groove, and the end of the valve core rod with the water outlet can be sealingly matched or separated from the sealing groove by pulling the valve core rod axially along the valve sleeve.

[0006] In the technical solution, the pull type water stop valve is composed of a valve core rod and a valve sleeve, the water stop valve is operated by pulling the valve core rod, the positioning rotor is circumferentially rotated under the meshing action of the sawtooth when the valve core rod is pulled, when the sawtooth part is clamped into the deeper tooth groove of the inner tooth groove part, the end of the valve core rod provided with the water outlet can be clamped into the sealing groove, thereby sealing the water outlet channel, and the closing operation of the water stop valve is realized, when the sawtooth part is clamped into the shallower tooth groove of the inner tooth groove part, the end of the valve core rod provided with the water outlet is clamped out of the sealing groove, thereby making the water inlet channel communicate with the water outlet channel through the water outlet, and the water stop valve is opened; the water stop valve is opened and closed by pulling the valve core rod, and no additional operating tool is needed, which is more convenient and fast.

[0007] Preferably, the outer periphery of the end of the valve core rod provided with the water outlet is provided with a water stop sealing ring and an anti-backflow sealing ring arranged at intervals in front and back, and the water outlet is located between the water stop sealing ring and the anti-backflow sealing ring.

[0008] Preferably, the end of the valve core rod provided with the water inlet is connected with a water inlet connector.

[0009] Preferably, the end of the valve core rod corresponding to the positioning rotor away from the outer tooth groove part is provided with a limiting clamping sleeve.

[0010] Preferably, the outer periphery of the valve core rod provided with the water outlet is provided with a water outlet groove, and the water outlet is located at the bottom wall or the side wall of the water outlet groove.

[0011] Preferably, the valve sleeve is screwed with a mounting valve cap at the end of the valve core rod provided with the water inlet, and the valve core rod is movably arranged through the mounting valve cap.

[0012] Preferably, the valve sleeve is connected with a water outlet connector at one end of the water outlet channel.

[0013] The beneficial effects of the utility model are: the utility model directly controls opening and closing by axially pulling the valve core rod, the operation stroke is shorter, more operation time is saved than the traditional rotary valve, and the emergency water stop demand is met. The meshing design of the positioning rotor and the tooth groove can provide clear gear feedback and avoid misoperation. The multiple sealing and modular design systematically solve the core defects of the existing water stop valve, realize significant technical leap in operation efficiency, sealing reliability and maintenance cost, meet the demand of the fluid control field for efficient, safe and intelligent valve, and have wide industrial application value. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0015] Figure 1 is a perspective view of the pull-type water stop valve provided in the embodiments of the present application.

[0016] Figure 2 is a perspective view of the valve core rod of the pull-type water stop valve provided in the embodiments of the present application.

[0017] Figure 3 is a perspective view of the valve sleeve of the pull-type water stop valve provided in the embodiments of the present application. Figure 1 .

[0018] Figure 4 is a perspective view of the valve sleeve of the pull-type water stop valve provided in the embodiments of the present application. Figure 2 .

[0019] Reference signs; valve core rod 100, water outlet 110, outer tooth groove part 120, water outlet groove 130, valve sleeve 200, inner tooth groove part 210, sealing groove 220, water outlet passage 230, positioning rotor 300, sawtooth part 310, spring part 400, water stop sealing ring 500, anti-backflow sealing ring 600, water inlet connector 700, limiting clamping sleeve 800, mounting valve cap 900, water outlet connector 1000. DETAILED DESCRIPTION

[0020] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0021] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meanings understood by the technical personnel in the field to which the present application belongs.

[0022] As Figures 1 to 4The utility model discloses a kind of pull type stop valves, including the valve core rod 100 and valve sleeve 200 of inside and outside coaxial arrangement;The valve core rod 100 is equipped with water inlet channel, the valve core rod 100 one end is equipped with the water inlet of intercommunication water inlet channel, the other end periphery is equipped with the water outlet 110 of intercommunication water inlet channel, the valve core rod 100 is sleeved with the positioning rotor 300 that can rotate in circumference, the positioning rotor 300 periphery is equipped with the sawtooth part 310 of annular arrangement, the valve core rod 100 periphery is equipped with the outer tooth groove part 120 with sawtooth part 310 meshing, the inner tooth groove part 210 of annular arrangement and with sawtooth part 310 meshing is equipped in valve sleeve 200 inner wall, two kinds of different depth tooth grooves are alternately arranged on the inner tooth groove part 210, the valve core rod 100 is also sleeved with the spring piece 400 of the elastic support positioning rotor 300;The valve sleeve 200 is equipped with the sealing groove 220 that can be sealed with the end of valve core rod 100 opposite at water outlet 110 one end of valve core rod 100, sealing groove 220 bottom wall is equipped with water outlet channel 230, along the axial pulling of valve sleeve 200 valve core rod 100 can make the end of valve core rod 100 with water outlet 110 and sealing groove 220 sealing cooperation or separation.

[0023] As Figures 1 to 4 In the embodiment, the pull type stop valve is composed of the valve core rod 100 and the valve sleeve 200, and the opening and closing of the stop valve is operated by pulling the valve core rod 100. When the valve core rod 100 is pulled, the positioning rotor 300 rotates in circumference under the action of sawtooth meshing. The sawtooth part 310 of the positioning rotor 300 is rotated to the inner sawtooth part 310 of different depths to position the positioning rotor 300, and the end of the valve core rod 100 with the water outlet 110 is separated from or sealed with the sealing groove 220.

[0024] Specifically, the valve core rod 100 is axially pulled along the valve sleeve 200, and the positioning rotor 300 is moved together with the valve core rod 100. Since the sawtooth part 310 of the positioning rotor 300 is meshed with the inner tooth groove part 210 of the inner wall of the valve sleeve 200, the positioning rotor 300 rotates in circumference under the action of sawtooth meshing during the pulling process. When the sawtooth part 310 is clamped into the deeper tooth groove of the inner tooth groove part 210, the end of the valve core rod 100 with the water outlet 110 can be clamped into the sealing groove 220, and the water outlet 110 is sealed to close the stop valve. When the sawtooth part 310 is clamped into the shallower tooth groove of the inner tooth groove part 210, the end of the valve core rod 100 with the water outlet 110 is clamped out of the sealing groove 220, so that the water inlet channel is communicated with the water outlet channel 230 through the water outlet 110, the stop valve is opened, the spring piece 400 is compressed, and the elastic potential energy is stored for the next operation. The opening and closing of the stop valve by pulling the valve core rod 100 does not need additional operating tools, and is more convenient and fast.

[0025] As Figures 1 to 4As shown, in order to facilitate assembly, the valve sleeve 200 corresponding to the valve core rod 100 inlet end threaded with the valve core rod 100 movable through the installation valve cap 900. The center hole diameter of the installation valve cap 900 is slightly larger than the outer diameter of the valve core rod 100 (gap 0.2-0.3mm), to ensure that the valve core rod 100 can be freely movable in the installation valve cap 900. In practical application, the positioning rotor 300 is made of engineering plastic material, which is made by injection molding process, and the inner diameter is matched with the outer diameter of the valve core rod 100, which can ensure the circumferential rotation on the valve core rod 100. The positioning rotor 300 is sleeved on the valve core rod 100, and the sawtooth part 310 is engaged with the outer tooth groove part 120 of the valve core rod 100. The spring member 400 is made of stainless steel coil spring, one end of which abuts against the shoulder of the positioning rotor 300, and the other end abuts against the inner wall of the valve cap, which provides pre-tightening force for the positioning rotor 300.

[0026] As shown in Figure 2 , the valve core rod 100 is provided with a water outlet 110, and the outer periphery of one end of the water outlet 110 is provided with a front and rear spaced sealing ring 500 and anti-inverted sealing ring 600, and the water outlet 110 is located between the sealing ring 500 and the anti-inverted sealing ring 600. In this way, when the valve core rod 100 has a water outlet 110 end clamped into the sealing groove 220, the sealing ring 500 is tightly attached to the inner wall of the sealing groove 220, so as to completely close the water stop valve, and the anti-inverted sealing ring 600 is in sealing contact with the inner wall of the valve sleeve 200, thereby avoiding water flowing back to the end of the valve sleeve 200 provided with the positioning rotor 300, resulting in water leakage of the water stop valve. The sealing ring 500 and the anti-inverted sealing ring 600 are made of butyronitrile rubber material and are assembled by interference fit to ensure the sealing performance.

[0027] As shown in Figure 2 , in order to facilitate the connection of the water stop valve and the pipeline, thereby controlling the on-off of the pipeline, the water inlet connector 700 is connected to the water inlet end of the valve core rod 100, and the water outlet connector 1000 is connected to the water outlet end of the valve sleeve 200. In this way, the water inlet connector 700 and the water outlet connector 1000 can be connected to the pipeline,

[0028] As shown in Figure 2 , in order to control the pulling stroke of the valve core rod 100, the limiting sleeve 800 is arranged at the end of the valve core rod 100 corresponding to the positioning rotor 300 away from the outer tooth groove part 120. In this way, when the valve core rod 100 drives the positioning rotor 300 to move, it abuts against the limiting sleeve 800 after moving to the limit, thereby realizing limiting operation and avoiding operation stroke.

[0029] As shown in Figure 2 , the valve core rod 100 is provided with a water outlet 110, and the outer periphery of one end of the water outlet 110 is provided with a water outlet groove 130, and the water outlet 110 is located at the bottom wall or side wall of the water outlet groove 130. It is beneficial to the smooth flow of liquid.

[0030] It should be finally pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced equivalently. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A pull-type stopper, characterized by: The valve core rod (100) and the valve sleeve (200) are coaxially arranged inside and outside; The water inlet channel is arranged in the valve core rod (100), the water inlet port is arranged at one end of the valve core rod (100) and is communicated with the water inlet channel, the water outlet (110) is arranged at the outer periphery of the other end of the valve core rod (100) and is communicated with the water inlet channel, the positioning rotor (300) which can rotate in the circumferential direction is sleeved on the valve core rod (100), the sawtooth part (310) is arranged in the circumferential direction on the outer periphery of the positioning rotor (300), the outer tooth groove part (120) which is engaged with the sawtooth part (310) is arranged on the outer periphery of the valve core rod (100), the inner tooth groove part (210) which is arranged in the circumferential direction and is engaged with the sawtooth part (310) is arranged on the inner wall of the valve sleeve (200), the tooth grooves with different depths are alternately arranged on the inner tooth groove part (210), and the spring member (400) which elastically supports the positioning rotor (300) is further sleeved on the valve core rod (100). The valve sleeve (200) is provided with the sealing groove (220) which can be sealed against the end of the valve core rod (100) at one end corresponding to the water outlet (110) of the valve core rod (100), the water outlet channel (230) is arranged on the bottom wall of the sealing groove (220), and the end of the valve core rod (100) with the water outlet (110) can be sealed or separated from the sealing groove (220) by pulling the valve core rod (100) in the axial direction of the valve sleeve (200).

2. The pull-draught stop valve according to claim 1, characterized in that The outer periphery of one end of the valve core rod (100) provided with the water outlet (110) is provided with the water sealing ring (500) and the anti-backflow sealing ring (600) which are arranged at intervals in front and back.

3. The pull-draught stop valve according to claim 1, wherein The water inlet joint (700) is connected to one end of the valve core rod (100) provided with the water inlet port.

4. The pull-draught stop valve according to claim 1, wherein The limiting sleeve (800) is arranged at one end of the valve core rod (100) corresponding to the positioning rotor (300) away from the outer tooth groove part (120).

5. The pull-draught stop valve according to claim 1, wherein The outer periphery of the valve core rod (100) provided with the water outlet (110) is provided with the water outlet groove (130), and the water outlet (110) is arranged on the bottom wall or the side wall of the water outlet groove (130).

6. The pull-draught stop valve according to claim 1, wherein The mounting valve cap (900) through which the valve core rod (100) moves is screwed at one end of the valve sleeve (200) corresponding to the water inlet port of the valve core rod (100).

7. The pull-draught stop valve according to claim 1, wherein The water outlet joint (1000) is connected to one end of the valve sleeve (200) provided with the water outlet channel (230).

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