CN216242408U

CN216242408U - Electric two-way regulating valve

Info

Publication number: CN216242408U
Application number: CN202122702625.0U
Authority: CN
Inventors: 沈永忠; 邹其忠
Original assignee: ZHENGFENG VALVE GROUP CO Ltd
Current assignee: ZHENGFENG VALVE GROUP CO Ltd
Priority date: 2021-11-06
Filing date: 2021-11-06
Publication date: 2022-04-08
Anticipated expiration: 2031-11-06

Abstract

The utility model relates to the technical field of regulating valves, in particular to an electric two-way regulating valve, which aims at solving the problem of low stability of the conventional medium flow regulation and provides a scheme that the electric two-way regulating valve comprises a valve body, a valve rod and an electric actuator, wherein a water inlet and a water outlet are respectively formed in two sides of the valve body, a valve cover is installed at the bottom of the valve body, a piston cylinder is screwed on the inner wall of the valve body, a first o-shaped ring and a second o-shaped ring are respectively installed between the outer wall of the piston cylinder and the valve body, a piston is connected on the inner wall of the piston cylinder in a sliding manner, a third o-shaped ring is installed between the piston cylinder and the piston, a first flow hole and a second flow hole are respectively formed in the outer walls of the piston cylinder and the piston, a filling cavity is formed in the top of the valve body, and a filling assembly is arranged in the filling cavity. The utility model has the characteristics of reasonable structure, simple operation, convenient adjustment and control of the flow of the medium, stable working state, strong anti-interference capability and high adjustment precision.

Description

Electric two-way regulating valve

Technical Field

The utility model relates to the field of regulating valves, in particular to an electric two-way regulating valve.

Background

The electric two-way regulating valve is a device for automatically regulating and controlling the flow of a pipeline, can regulate the flow of cold water and hot water, and is widely used for fluid control of systems in a central air-conditioning refrigeration or heating system, water treatment, industrial processing industry and the like, such as: the water way control of the air conditioning and ventilating equipment and the water way control of the heating equipment. At present, the stability of the electric two-way regulating valve for regulating the medium flow is not high, and therefore the electric two-way regulating valve is provided in the scheme.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electric two-way regulating valve, which solves the problem of low stability of medium flow regulation in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an electric two-way regulating valve comprises a valve body, a valve rod and an electric actuator, wherein a water inlet and a water outlet are respectively formed in two sides of the valve body, a valve cover is installed at the bottom of the valve body, a piston cylinder is screwed on the inner wall of the valve body, a first o-shaped ring and a second o-shaped ring are further installed between the outer wall of the piston cylinder and the valve body respectively, the second o-shaped ring is located below the first o-shaped ring, a piston is slidably connected to the inner wall of the piston cylinder, a third o-shaped ring is installed between the piston cylinder and the piston, the interior of the piston is of a hollow structure, an opening is formed in the top of the piston and communicated with the interior of the valve body, a first flow through hole and a second flow through hole are respectively formed in the outer walls of the piston cylinder and the piston, a filling cavity is formed in the top of the valve body, a filling assembly is arranged in the filling cavity, and a thread groove is formed in the inner wall of the bottom of the piston, the valve rod spiro union is on the inner wall of thread groove, the top of valve rod extends to the outside of filling the chamber, and the spiro union has the connecting cap, electric actuator installs the top at the valve body, the top of connecting cap extends to the inside of electric actuator pinhole, and identical with electric actuator's pinhole.

Preferably, the both sides of valve gap bottom and the both sides of valve body bottom all run through and have seted up the bolt groove, and the spiro union has a bolt between two perpendicular bolt grooves that set up, and the bottom of bolt extends to the outside in bolt groove, the outside spiro union of bolt has the nut, the outside still movable sleeve of bolt is equipped with the second gasket, the second gasket is located between valve gap and the nut, install fourth o type circle between valve gap and the valve body.

Preferably, a first oblique angle is formed on the inner wall of the bottom of the first flow through hole close to one side of the piston, a second oblique angle is formed on the inner wall of the second flow through hole close to the top of the piston cylinder, and the first oblique angle and the second oblique angle are abutted.

Preferably, the valve stem is stepped in shape.

Preferably, the packing subassembly includes that the slip cap establishes at outside copper gasket, spring, first gasket, filler, first gasket and the gland of valve rod, copper gasket, spring, first gasket, filler, first gasket and gland are by supreme setting gradually down, threaded connection between the outer wall of gland and the inner wall in packing chamber, and the gland extends to the outside in packing chamber, install fifth o type circle between gland and the packing chamber, install sixth o type circle between gland and the valve rod.

Preferably, the top of the gland is provided with a dustproof ring groove, the inner wall of the dustproof ring groove is fixedly connected with a dustproof ring, and the dustproof ring is in sliding connection with the valve rod.

The utility model has the beneficial effects that:

1. under the action of the electric actuator, the electric two-way valve is matched with the connecting cap and the valve rod to drive the piston to move up or down, so that the flow area between the piston and the piston cylinder is changed, the flow of a medium is conveniently adjusted and controlled, and the electric two-way valve has the characteristics of stable working state, strong anti-interference capability and high adjustment precision.

The utility model has the characteristics of reasonable structure, simple operation, convenient adjustment and control of the flow of the medium, stable working state, strong anti-interference capability and high adjustment precision.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention.

FIG. 2 is an enlarged view of the utility model at K in FIG. 1.

Reference numbers in the figures: 1. a valve body; 5. a copper gasket; 6. a spring; 7. a first gasket; 8. a filler; 9. a gland; 10. a fifth o-ring; 11. a sixth o-ring; 12. a dust ring; 13. An electric actuator; 14. a connecting cap; 16. a valve stem; 17. a piston cylinder; 19. a first o-ring; 20. a piston; 22. a second o-ring; 23. a bolt; 24. a second gasket; 25. a nut; 26. a valve cover; 27. and a fourth o-ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, an electric two-way regulating valve comprises a valve body 1, a valve rod 16 and an electric actuator 13, wherein the valve body 1 is made of nodular cast iron, the valve rod 16 is made of stainless steel, the shell of the electric actuator 13 is made of aluminum alloy, two sides of the valve body 1 are respectively provided with a water inlet and a water outlet, the flow direction of a medium in the valve body 1 is low, high and high, the bottom of the valve body 1 is provided with a valve cover 26, two sides of the bottom of the valve cover 26 and two sides of the bottom of the valve body 1 are both provided with a bolt groove in a penetrating manner, a bolt 23 is screwed between the two vertically arranged bolt grooves, the bottom end of the bolt 23 extends to the outside of the bolt groove, the outside of the bolt 23 is screwed with a nut 25, the outside of the bolt 23 is also movably sleeved with a second gasket 24, the second gasket 24 is positioned between the valve cover 26 and the nut 25, a fourth o-shaped ring 27 is arranged between the valve cover 26 and the valve body 1, the fourth o-shaped ring 27 is used for sealing between the valve cover 26 and the valve body 1, the inner wall of the valve body 1 is in threaded connection with a piston cylinder 17, the piston cylinder 17 is made of stainless steel, a first o-ring 19 and a second o-ring 22 are further arranged between the outer wall of the piston cylinder 17 and the valve body 1 respectively, the second o-ring 22 is located below the first o-ring 19, the first o-ring 19 and the second o-ring 22 are arranged to seal the space between the piston cylinder 17 and the inner wall of the valve body 1, a piston 20 is connected to the inner wall of the piston cylinder 17 in a sliding manner, the piston 20 is made of stainless steel, a third o-ring is arranged between the piston cylinder 17 and the piston 20 and used to seal the space between the piston cylinder 17 and the piston 20, the piston 20 is hollow, the top of the piston 20 is provided with an opening and communicated with the inside of the valve body 1, the outer walls of the piston cylinder 17 and the piston 20 are provided with a first flow hole and a second flow hole respectively, the top of the valve body 1 is provided with a filling cavity, the packing assembly is arranged in the packing cavity, a thread groove is formed in the inner wall of the bottom of the piston 20, the valve rod 16 is in threaded connection with the inner wall of the thread groove, the top end of the valve rod 16 extends to the outside of the packing cavity and is in threaded connection with the connecting cap 14, the electric actuator 13 is installed at the top of the valve body 1, the top end of the connecting cap 14 extends to the inside of a pin hole of the electric actuator 13 and is matched with the pin hole of the electric actuator 13, and the electric two-way valve is matched with the connecting cap 14 and the valve rod 16 to drive the piston 20 to move upwards or downwards under the action of the electric actuator 13, so that the flow area between the piston 20 and the piston cylinder 17 is changed, the flow of a medium is conveniently adjusted and controlled, and the packing assembly has the characteristics of stable working state, strong anti-interference capability and high adjustment precision;

a first bevel angle is formed in the inner wall of the bottom of the first flow through hole close to the piston 20, a second bevel angle is formed in the inner wall of the top of the second flow through hole close to the piston cylinder 17, the first bevel angle and the second bevel angle are in butt joint, when the piston 20 is closed, the sealing performance of the piston 20 and the piston cylinder 17 is improved, and the problem of large leakage amount when the electric two-way valve is closed is solved;

the valve rod 16 is in a step shape and is divided into a thick part and a thin part, the thin part penetrates through the valve body 1 and the packing 8 to be connected with the electric actuator 13, the thick part is connected with the piston 20 in the inner cavity of the valve body 1, when the piston 20 is completely closed, the distance from the step of the valve rod 16 to the valve body 1 is H1, the distance from the maximum circulation position on the side edge of the piston 20 to the circulation position on the lower part of the piston cylinder 17 is H2, H1 is H2, and H2 is not more than or equal to the maximum circulation position of the electric actuator 13, so that the functions of limiting the maximum circulation position of the electric actuator 13 and ensuring the maximum opening position of the piston 20 are achieved, and the adjusting performance of the electric two-way valve is improved;

the packing assembly comprises a copper gasket 5, a spring 6, a first gasket 7, a packing 8 and a gland 9 which are sleeved outside the valve rod 16 in a sliding mode, the copper gasket 5, the spring 6, the first gasket 7, the packing 8 and the gland 9 are sequentially arranged from bottom to top, the outer wall of the gland 9 is in threaded connection with the inner wall of the packing cavity, the gland 9 extends to the outside of the packing cavity, a fifth o-shaped ring 10 is installed between the gland 9 and the packing cavity, a sixth o-shaped ring 11 is installed between the gland 9 and the valve rod 16, when the electric actuator 13 is closed, the copper gasket 5 is driven to abut against the inner wall of the bottom of the packing cavity through the resilience force of the spring 6, meanwhile, the packing 8 is compacted through the first gasket 7, and the problem of water seepage is effectively prevented by matching the gland 9, the fifth o-shaped ring 10 and the sixth o-shaped ring 11;

the top of gland 9 has been seted up the dust ring groove, and the inner wall rigid coupling in dust ring groove has dust ring 12, and dust ring 12 and valve rod 16 sliding connection, and dust ring 12's setting is used for preventing that outside dust from entering into inside the valve body 1.

The working principle is as follows: under the action of the electric actuator 13, the electric two-way valve is matched with the connecting cap 14 and the valve rod 16 to drive the piston 20 to do ascending or descending motion, so that the flow area between the piston 20 and the piston cylinder 17 is changed, the flow of a medium is conveniently adjusted and controlled, and the electric two-way valve has the characteristics of stable working state, strong anti-interference capability and high adjustment precision.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides an electronic two-way governing valve, includes valve body (1), valve rod (16) and electric actuator (13), its characterized in that, water inlet and delivery port have been seted up respectively to the both sides of valve body (1), valve gap (26) are installed to the bottom of valve body (1), the inner wall spiro union of valve body (1) has piston cylinder (17), still install first o type circle (19) and second o type circle (22) respectively between the outer wall of piston cylinder (17) and valve body (1), second o type circle (22) are located the below of first o type circle (19), the inner wall sliding connection of piston cylinder (17) has piston (20), install third o type circle between piston cylinder (17) and piston (20), the inside of piston (20) is hollow structure, the top of piston (20) has seted up the opening, and is linked together with valve body (1) inside, first circulation through-hole and second circulation through-hole have been seted up respectively to the outer wall of piston barrel (17) and piston (20), the packing chamber has been seted up at the top of valve body (1), the inside in packing chamber is provided with the packing subassembly, the thread groove has been seted up on the inner wall of piston (20) bottom, valve rod (16) spiro union is on the inner wall of thread groove, the top of valve rod (16) extends to the outside in packing chamber, and the spiro union has connecting cap (14), install the top at valve body (1) electric actuator (13), the top of connecting cap (14) extends to the inside of electric actuator (13) pinhole, and is identical with the pinhole of electric actuator (13).

2. The electric two-way regulating valve according to claim 1, wherein bolt grooves are formed through two sides of the bottom of the valve cover (26) and two sides of the bottom of the valve body (1), a bolt (23) is screwed between the two vertically arranged bolt grooves, the bottom end of the bolt (23) extends to the outside of the bolt groove, a nut (25) is screwed on the outside of the bolt (23), a second gasket (24) is movably sleeved on the outside of the bolt (23), the second gasket (24) is located between the valve cover (26) and the nut (25), and a fourth o-shaped ring (27) is installed between the valve cover (26) and the valve body (1).

3. The electric two-way regulating valve according to claim 1, wherein a first bevel angle is formed on the inner wall of the first flow through hole close to the bottom of one side of the piston (20), a second bevel angle is formed on the inner wall of the second flow through hole close to the top of one side of the piston cylinder (17), and the first bevel angle and the second bevel angle are in contact with each other.

4. An electrically operated two-way regulating valve according to claim 1, characterized in that the valve stem (16) is stepped in shape.

5. The electric two-way regulating valve according to claim 1, characterized in that the packing assembly comprises a copper gasket (5), a spring (6), a first gasket (7), a packing (8), a first gasket (7) and a gland (9) which are slidably sleeved outside a valve rod (16), the copper gasket (5), the spring (6), the first gasket (7), the packing (8), the first gasket (7) and the gland (9) are sequentially arranged from bottom to top, the outer wall of the gland (9) is in threaded connection with the inner wall of the packing cavity, the gland (9) extends to the outside of the packing cavity, a fifth o-shaped ring (10) is installed between the gland (9) and the packing cavity, and a sixth o-shaped ring (11) is installed between the gland (9) and the valve rod (16).

6. The electric two-way regulating valve according to claim 5, characterized in that a dust ring groove is formed at the top of the gland (9), a dust ring (12) is fixedly connected to the inner wall of the dust ring groove, and the dust ring (12) is in sliding connection with the valve rod (16).