CN114635972A - Stop valve structure and tap - Google Patents

Abstract

The invention discloses a stop valve structure and a faucet, wherein the volume of liquid between a water channel and a balance cavity is kept unchanged in the movement process of a valve core assembly, so that the water pressure in the water channel is kept constant no matter the valve core assembly opens or closes the water channel, the control valve core positioned at the downstream of the water channel is ensured not to deform easily, and the service life is prolonged.

Description

Stop valve structure and tap

Technical Field

The invention relates to a stop valve structure and a faucet.

Background

The stop valve has the function of closing the water route. Current stop valve need be screwed down by the valve rod at the closing in-process, and the in-process of screwing by the valve rod, and inside volume diminishes, but the liquid volume does not change, leads to inside water route pressure-bearing sharply to increase, and the space that reduces this moment need compensate through other part deformations, and which part is weak, and the probability that appears warping is just big more, and the case is as core component, also is simultaneously weaker link in the leading body group, and the water pressure of sharply increasing causes destruction to the case easily.

Therefore, there is a need for a shut-off valve that does not change the internal liquid volume during opening or closing.

Disclosure of Invention

The invention provides a stop valve structure and a faucet, which overcome the defects in the prior art. One of the technical schemes adopted by the invention for solving the technical problems is as follows:

stop valve structure, its opening and close that is applicable to the water route, it includes:

a valve housing;

a rotary member rotatable relative to the valve housing; and

the valve core assembly is limited between the rotating part and the valve shell and is in transmission fit with the rotating part, the waterway can be opened or closed under the driving of the rotating part, a balance cavity which can be communicated with the upstream of the waterway all the time is defined between the valve core assembly and the rotating part as well as between the valve core assembly and the valve shell, and the liquid volume between the waterway and the balance cavity is kept unchanged in the moving process of the valve core assembly.

In a preferred embodiment: the valve core assembly comprises a valve core rod and a sealing element arranged on the valve core rod, the valve core rod is in transmission fit with the rotating element, the water path is provided with a sealing port, and the sealing element can extend out of the valve shell and can move between a sealing position for sealing the sealing port and an opening position away from the sealing port.

In a preferred embodiment: the valve core assembly further comprises a hollow adjusting shaft rod which is movably arranged in the rotating piece and can axially move along with the rotation of the rotating piece, and the valve core rod part is sleeved in the adjusting shaft rod and can axially move along with the adjusting shaft rod.

In a preferred embodiment: the rotating piece is provided with a movable cavity with an opening at the bottom end, internal threads are arranged in the movable cavity, the adjusting shaft lever is provided with external threads, and the rotating piece is in threaded connection and matching with the adjusting shaft lever through the internal threads and the external threads; the periphery of the adjusting shaft lever is provided with an external spline, the inner wall of the valve shell is provided with an internal spline, the internal spline is meshed with the external spline and matched with the external spline, and the rotating piece rotates to only drive the adjusting shaft lever to move axially.

In a preferred embodiment: the bottom end of the valve shell is provided with a necking, and the diameter of the bottom end of the adjusting shaft rod is larger than that of the necking.

In a preferred embodiment: the periphery of the valve core rod is provided with a transmission table which abuts against the bottom end of the adjusting shaft rod.

In a preferred embodiment: the valve core rod is also provided with an elastic arm extending upwards, and the elastic arm is provided with a first limiting part; the inner wall of the adjusting shaft lever is provided with a second limiting part, and the valve core lever can be prevented from being separated from the adjusting shaft lever through the limiting matching of the first limiting part and the second limiting part.

In a preferred embodiment: the stop valve structure also comprises a connecting piece, and the rotating piece is rotatably sleeved in the valve shell and is connected through the connecting piece.

In a preferred embodiment: the connecting piece is a clamping ring, a first clamping ring groove is formed in the periphery of the rotating piece, a second clamping ring groove is formed in the inner wall of the valve shell, and the clamping ring is sleeved in the first clamping ring groove and the second clamping ring groove; or, the connecting piece is a hollow nut, the nut is matched with the inner wall of the valve shell in a threaded manner, the bottom end of the rotating piece is provided with an anti-falling part, and the rotating piece extends into the nut and abuts against the bottom end of the nut through the anti-falling part.

In a preferred embodiment: the stop valve structure also comprises an elastic part, and two ends of the elastic part are respectively pressed against the inner wall of the movable cavity and the valve core rod.

The second technical scheme adopted by the invention for solving the technical problems is as follows:

a faucet to which the shut-off valve structure of any one of the above is applied.

Compared with the background technology, the technical scheme has the following advantages:

1. because the liquid volume between water route and the balanced chamber keeps unchangeable among the case subassembly activity in-process for the case subassembly no matter is opening the water route or close the water route in-process, the water pressure in the water route all keeps invariable, and then guarantees to be located the control case non-deformable in water route low reaches, improves life.

2. The rotating part can drive the valve core rod to move axially, so that the sealing element can move between a sealing position and an opening position, and the transmission structure is simple and reliable and has a good transmission effect.

3. Through threaded connection between regulating shaft pole and the rotating member, adjust transmission connection rotating member and case pole, and the meshing cooperation through internal and external splines between regulating shaft pole and the valve casing is only can axial displacement with the restriction regulating shaft pole, and from this, the rotating member rotates and can drive regulating shaft pole axial displacement.

4. The diameter of the bottom end of the adjusting shaft rod is larger than that of the necking, and the necking can prevent the adjusting shaft rod from being separated from the valve shell.

5. The transmission table abuts against the bottom end of the adjusting shaft rod, and when the adjusting shaft rod moves downwards, the transmission table can be pushed to move downwards so as to drive the valve core rod to move downwards; when the adjusting shaft rod moves upwards, the transmission platform loses downward pressure, and the valve core rod moves upwards under the action of an upward resultant force.

6. The two ends of the elastic part are respectively pressed against the inner wall of the movable cavity and the valve core rod, and when water is cut off in the water channel, the valve core rod can be driven to move downwards under the elastic action of the elastic part to seal the sealing port, so that the function of the one-way valve is achieved, and the water channel is prevented from being connected with each other.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic diagram of the shut-off valve structure of the preferred embodiment.

FIG. 2 is an exploded perspective view of the shut-off valve structure according to the preferred embodiment.

FIG. 3 is a schematic view of the assembly of the rotary member with the snap ring and the seal ring according to the preferred embodiment.

FIG. 4 is a sectional view of the preferred embodiment of the rotating member with the snap ring and seal ring assembled.

FIG. 5 is a schematic view of the assembly of the rotating member and the adjustment shaft according to a preferred embodiment.

FIG. 6 is a sectional view of the rotating member and the adjustment shaft shown assembled in accordance with a preferred embodiment.

FIG. 7 depicts an assembly of the structure of FIG. 6 with a valve housing.

Fig. 8 is an assembled cross-sectional view of fig. 7.

Fig. 9 is a schematic view showing the structure of fig. 8 assembled with the elastic member and the valve core rod.

Fig. 10 is an assembled cross-sectional view of fig. 9.

FIG. 11 is a cross-sectional schematic view of a preferred embodiment faucet.

Detailed Description

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" and "fixedly connected" should be interpreted broadly, that is, any connection between the two that is not in a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having", and variations thereof, are intended to be inclusive and not limiting.

Referring to fig. 1 to 10, a preferred embodiment of a shut-off valve structure, which is suitable for opening and closing a waterway, includes a valve housing 10, a rotary member 20, and a valve core assembly.

As shown in fig. 7 and 8, the valve housing 10 is a hollow solid of revolution, and the inner wall thereof is provided with a second snap ring groove 11, a limit step 12, an internal spline 13 and a reducing opening 14 which are arranged in sequence at intervals from top to bottom, and the diameter of the internal spline 13 is larger than that of the reducing opening 14.

The rotary member 20 is rotatable relative to the valve housing 10.

The shut-off valve structure further comprises a connecting member, and the rotating member 20 is rotatably sleeved in the valve housing 10 and connected through the connecting member. As shown in fig. 3 and 4, the rotating member 20 is provided at its outer periphery with a limiting boss 21 and a first snap ring groove 22 arranged up and down.

In this embodiment, the connecting member is a snap ring 30, the snap ring 30 is sleeved in the first snap ring groove 22 and the second snap ring groove 11, and the limiting boss 21 abuts against the top end face of the valve housing 10. A seal ring 23 is further provided between the outer periphery of the rotor 20 and the inner wall of the valve housing 10, and the seal ring 23 is located between the snap ring 30 and the limit step 12. As shown in fig. 4, the snap ring 30 is C-shaped, and the bottom end periphery thereof is provided with a guiding inclined surface 31 for facilitating the snap ring 30 to be clamped into the second snap ring groove 11, so that, in order to prevent the snap ring 30 from being reversely installed, the top end surface of the snap ring 30 is provided with a boss 32, the first snap ring groove 22 is further provided with a groove 24 capable of being engaged with the boss 32, and the reverse installation of the snap ring 30 can be prevented by the corresponding engagement of the boss 32 and the groove 24.

Or, according to the requirement, the connecting piece is also a hollow nut, the nut is in threaded connection with the inner wall of the valve housing 10, the bottom end of the rotating piece 20 is provided with an anti-falling part, and the rotating piece 20 extends into the nut and abuts against the bottom end of the nut through the anti-falling part. The structure of the connecting member is not limited to this, so that the rotating member 20 can rotate relative to the valve housing 10 without falling out.

In this embodiment, the top end of the rotating member 20 is provided with a handle portion 25, which is provided with a movable cavity 26 with an open bottom end, and the movable cavity 26 is internally provided with an internal thread.

The valve core assembly is limited between the rotating member 20 and the valve housing 10 and is in transmission fit with the rotating member 20, the valve core assembly can open or close the waterway under the driving of the rotating member 20, a balance cavity 1 which can be always communicated with the upstream of the waterway is enclosed between the valve core assembly and the rotating member 20 as well as between the valve housing 10, and the liquid volume between the waterway and the balance cavity 1 is kept unchanged during the movement of the valve core assembly.

In this embodiment, the valve core assembly includes a valve core rod 40 and a sealing member 50 mounted on the valve core rod 40, the valve core rod 40 is in driving fit with the rotary member 20, the waterway is provided with a sealing opening, and the sealing member 50 can extend out of the valve housing 10 and can move between a sealing position for sealing the sealing opening and an opening position away from the sealing opening. As shown in fig. 10, the periphery of the bottom end of the valve core rod 40 is provided with a transmission platform 41 and a clamping platform 42, the sealing member 50 is clamped between the transmission platform 41 and the clamping platform 42, and the periphery of the sealing member 50 is flush with the periphery of the transmission platform 41.

In this embodiment, the valve core assembly further includes a hollow adjuster shaft 60 movably mounted in the rotary member 20 and axially movable with rotation of the rotary member 20, and the valve core shaft 40 is partially housed in the adjuster shaft 60 and axially movable with the adjuster shaft 60.

Specifically, the adjusting shaft rod 60 is provided with external threads, and the rotating member 20 is in threaded fit with the adjusting shaft rod 60 through the internal and external threads; the outer spline 61 is arranged on the periphery of the bottom end of the adjusting shaft rod 60, the inner spline 13 is meshed with the outer spline 61, and the rotating part 20 rotates to only drive the adjusting shaft rod 60 to move axially.

In this embodiment, in order to prevent the adjusting shaft 60 from falling out of the valve housing 10, the diameter of the bottom end of the adjusting shaft 60 is larger than the diameter of the throat 14. And, the sealing element 50 and the driving table 41 can freely enter and exit the throat, i.e. there is a gap between the sealing element 50 and the throat 14, from which water can enter the balancing chamber 1. According to the requirement, the adjusting shaft rod 60 can be omitted, the rotating member and the valve housing can be connected through threads, and the rotating member can axially move in the rotating process to directly drive the valve core rod 40 and the sealing member 50 to axially move.

The transmission structure between the spool rod 40 and the adjusting shaft rod 60 is: the driving table 41 abuts against the bottom end of the adjusting shaft 60.

In this embodiment, the valve core rod 40 is further provided with two symmetrically arranged elastic arms 43 extending upwards, and the outer periphery of the elastic arms 43 is provided with a first limiting part 44; the inner wall of the bottom end of the adjusting shaft rod 60 is provided with a second limiting part 62, and the valve core rod can be prevented from being separated from the adjusting shaft rod through the limiting matching of the first limiting part and the second limiting part. As shown in fig. 9 and 10, the first position-limiting portion 44 is an inverted buckle, and the second position-limiting portion 62 is a buckle.

In this embodiment, the stop valve structure further includes an elastic member 70, and two ends of the elastic member 70 respectively press against the inner wall of the movable chamber 26 and the valve core rod 40. When water is cut off in the waterway, the elastic member 70 can drive the valve core rod 40 to move downwards under the action of the elastic force to seal the sealing opening, so as to play a role of a one-way valve and prevent the waterways from being crossed.

The stop valve structure is assembled as follows:

as shown in fig. 3, the snap ring 30 and the seal ring 23 are first sleeved on the outer periphery of the rotary member 20, and then, as shown in fig. 5, the adjusting shaft 60 is screwed into the movable cavity 26 of the rotary member 20 from below, at this time, the top end of the adjusting shaft 60 abuts against the top wall of the movable cavity 26, and the external spline 61 is located outside the movable cavity 26; then, as shown in fig. 7, the structure of fig. 6 is extended into the valve housing 10 from the top end of the valve housing 10 until the periphery of the snap ring 30 is clamped into the second snap ring groove 11, and the limiting boss 21 abuts against the top end face of the valve housing 10; then, as shown in fig. 9, the elastic member 70 is first sleeved on the periphery of the elastic arm 43, and then the elastic member 70 and the elastic arm 43 pass through the necking portion 14 of the valve housing 10 and then extend into the adjusting shaft 60, at this time, the first position-limiting portion 44 is located above the second position-limiting portion 62.

As shown in fig. 11, a preferred embodiment of the faucet is shown.

In this embodiment, this tap includes that cold water intakes water route 2, hot water intake water route 3, two stop valves 4 and a control valve core 5, and two stop valves 4 are installed respectively on cold water intake water route 2 and hot water intake water route 3, and control valve core 5 installs in order to reach the function of mixing water and regulation temperature between cold water intake water route 2 and the hot water intake water route 3.

The control valve core 5 can adopt a conventional water mixing valve core structure, and a pressure balancing device can be arranged in the control valve core. Taking the stop valve 4 on the cold water inlet waterway 2 as an example, the working principle of the stop valve 4 is explained as follows:

in the initial state, the sealing element 50 is in the open position, and water at the upstream of the cold water inlet waterway 2 enters the downstream of the cold water inlet waterway 2 after passing through the sealing port 6 and then enters the control valve core;

when the cold water inlet waterway 2 needs to be closed, only the rotating member 20 needs to be rotated, and at this time, the adjusting shaft 60 moves downward along the internal spline 13 under the action of the rotating member 20, so as to drive the valve core rod 40 and the sealing member 50 to move downward until the sealing member 50 is sealed at the sealing port 6, and the closing of the cold water inlet waterway 2 is completed. Because the water in the cold water inlet waterway 2 can enter the balance cavity 1 through the sealing element 50 or the gap between the transmission platform 41 and the necking 14 all the time, the liquid volume between the cold water inlet waterway 2 and the balance cavity 1 is kept unchanged all the time, and the water pressure of the cold water inlet waterway 2 is kept constant all the time in the process that the valve core rod 40 and the sealing element 50 move downwards, the control valve core 6 is ensured not to deform easily, and the service life of the control valve core 6 is prolonged.

If the hot water inlet waterway 3 is in a water cut-off state, the elastic member 70 of the stop valve 4 on the hot water inlet waterway 3 drives the valve core rod 40 and the sealing member 50 to move downward to seal the sealing port 6, so that the hot water inlet waterway 3 is closed, and at the moment, the water in the cold water inlet waterway 2 does not flow into the hot water inlet waterway 3; when the hot water inlet waterway 3 is filled with water, the elastic member 70 can be compressed by the water pressure of the hot water inlet waterway 3 to move the valve core rod 40 and the sealing member 50 upward, so as to open the sealing port 6, which has the effect of a check valve.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.

Claims (11)

1. Stop valve structure, its be applicable to opening and close in water route, its characterized in that: it includes:

a valve housing;

a rotary member rotatable relative to the valve housing; and

the valve core assembly is limited between the rotating part and the valve shell and is in transmission fit with the rotating part, the waterway can be opened or closed under the driving of the rotating part, a balance cavity which can be communicated with the upstream of the waterway all the time is defined between the valve core assembly and the rotating part as well as between the valve core assembly and the valve shell, and the liquid volume between the waterway and the balance cavity is kept unchanged in the moving process of the valve core assembly.

2. The shutoff valve structure according to claim 1, wherein: the valve core assembly comprises a valve core rod and a sealing element arranged on the valve core rod, the valve core rod is in transmission fit with the rotating element, the water path is provided with a sealing port, and the sealing element can extend out of the valve shell and can move between a sealing position for sealing the sealing port and an opening position away from the sealing port.

3. The shutoff valve structure according to claim 2, wherein: the valve core assembly further comprises a hollow adjusting shaft rod which is movably arranged in the rotating piece and can axially move along with the rotation of the rotating piece, and the valve core rod part is sleeved in the adjusting shaft rod and can axially move along with the adjusting shaft rod.

4. A stop valve structure according to claim 3, wherein: the rotating piece is provided with a movable cavity with an opening at the bottom end, internal threads are arranged in the movable cavity, the adjusting shaft lever is provided with external threads, and the rotating piece is in threaded connection and matching with the adjusting shaft lever through the internal threads and the external threads; the periphery of the adjusting shaft lever is provided with an external spline, the inner wall of the valve shell is provided with an internal spline, the internal spline is meshed with the external spline and matched with the external spline, and the rotating piece rotates to only drive the adjusting shaft lever to move axially.

5. The shutoff valve structure according to claim 4, wherein: the bottom end of the valve shell is provided with a necking, and the diameter of the bottom end of the adjusting shaft rod is larger than that of the necking.

6. The shutoff valve structure according to claim 4, wherein: the periphery of the valve core rod is provided with a transmission table which abuts against the bottom end of the adjusting shaft rod.

7. The shutoff valve structure according to claim 4, wherein: the valve core rod is also provided with an elastic arm extending upwards, and the elastic arm is provided with a first limiting part; the inner wall of the adjusting shaft lever is provided with a second limiting part, and the valve core lever can be prevented from being separated from the adjusting shaft lever through the limiting matching of the first limiting part and the second limiting part.

8. The shutoff valve structure according to claim 4, wherein: the stop valve structure also comprises a connecting piece, and the rotating piece is rotatably sleeved in the valve shell and is connected through the connecting piece.

9. The shutoff valve structure of claim 8, wherein: the connecting piece is a clamping ring, a first clamping ring groove is formed in the periphery of the rotating piece, a second clamping ring groove is formed in the inner wall of the valve shell, and the clamping ring is sleeved in the first clamping ring groove and the second clamping ring groove; or, the connecting piece is a hollow nut, the nut is matched with the inner wall of the valve shell in a threaded manner, the bottom end of the rotating piece is provided with an anti-falling part, and the rotating piece extends into the nut and abuts against the bottom end of the nut through the anti-falling part.

10. The shutoff valve structure according to claim 4, wherein: the stop valve structure also comprises an elastic part, and two ends of the elastic part are respectively pressed against the inner wall of the movable cavity and the valve core rod.

11. The tap, its characterized in that: the shutoff valve structure according to any one of claims 1 to 10 is applied thereto.

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