CN218883165U

CN218883165U - Two-way electric regulating valve

Info

Publication number: CN218883165U
Application number: CN202320082303.7U
Authority: CN
Inventors: 郑永忠; 傅桂生
Original assignee: Sanji Precision Technology Guangdong Co ltd
Current assignee: Sanji Precision Technology Guangdong Co ltd
Priority date: 2023-01-11
Filing date: 2023-01-11
Publication date: 2023-04-18
Anticipated expiration: 2033-01-11

Abstract

The utility model discloses a two-way electric regulating valve, which comprises a valve body, a valve cover, a valve rod, a valve core and a driving piece, wherein the valve cover is arranged on the valve body; the valve cover is provided with a through hole for the valve rod to pass through, a first sealing assembly, a second sealing assembly and a third sealing assembly are arranged in the through hole, and the first sealing assembly, the second sealing assembly and the third sealing assembly are sequentially sleeved on the valve rod along the direction from the valve core to the driving piece; the first seal assembly includes a first graphite pad. The two-way electric control valve can be suitable for high-temperature media, has good sealing effect and long service life.

Description

Two-way electric regulating valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a two-way electric control valve.

Background

Two-way regulating valves are generally used to accurately regulate the flow rate of a medium such as a gas or a liquid. In the prior art, the valve cover sealing structure of the two-way regulating valve is as follows: the upper end and the lower end of the valve rod are respectively provided with a shaft sleeve structure, the shaft sleeve structures are used for positioning the valve rod in the valve cover, and then a combined seal and a compression spring are added between the two shaft sleeve structures to form a seal structure of the valve cover. The sealing structure can only deal with common media, and when the temperature of the media is higher or the media are superheated steam, the sealing service life is short, and the service life of the two-way regulating valve is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two-way electrical control valve can be applicable to the high temperature medium, and is sealed effectual, two-way electrical control valve long service life.

To achieve the purpose, the utility model adopts the following technical proposal:

a two-way electric regulating valve comprises a valve body, a valve cover, a valve rod, a valve core and a driving piece, wherein the valve cover is arranged on the valve body, the valve core is arranged at one end of the valve rod, the driving piece is arranged at the other end of the valve rod, the valve rod penetrates through the valve cover and extends into the valve body, and the valve core is matched with a sealing seat in the valve body;

the valve cover is provided with a through hole for the valve rod to pass through, a first sealing assembly, a second sealing assembly and a third sealing assembly are arranged in the through hole, and the first sealing assembly, the second sealing assembly and the third sealing assembly are sequentially sleeved on the valve rod along the direction from the valve core to the driving piece;

the first seal assembly includes a first graphite pad.

Further, first seal assembly still includes first position sleeve and gland, first graphite pad be located first position sleeve with between the gland, the gland with the tip fixed connection of valve gap, the gland be used for with first position sleeve with first graphite pad is located in the through-hole of valve gap.

Furthermore, a containing hole is formed in the side wall of the first positioning sleeve, and heat-resistant lubricating powder is filled in the containing hole.

Further, the second sealing assembly comprises a second graphite pad, a compression spring, a gasket and a combined sealing element which are sequentially arranged, and the second graphite pad is close to the first positioning sleeve;

the number of the second graphite pads is at least one.

Furthermore, the combined sealing element is composed of a plurality of stacked sealing rings, the cross sections of the sealing rings are V-shaped, and the V-shaped cross sections of the sealing rings have different angles.

Further, the third sealing assembly comprises a sealing sleeve and an O-shaped ring, and the O-shaped ring is mounted on the inner wall and the outer wall of the sealing sleeve respectively;

and a second positioning sleeve is arranged between the sealing sleeve and the second sealing component, one end of the second positioning sleeve is abutted against the second sealing component, and the other end of the second positioning sleeve is abutted against the sealing sleeve.

Furthermore, a locking cover is fixed at one end of the through hole close to the sealing sleeve, the locking cover is in sliding fit with the through hole, and the locking cover abuts against the third sealing assembly.

Further, the valve body is provided with a discharge channel, a feeding channel and a sealing seat, and the sealing seat is communicated with the discharge channel and the feeding channel;

the inner wall of the sealing seat is provided with a graphite ring, and the graphite ring is positioned between the valve body and the sealing seat.

Furthermore, the outer wall of the valve cover is provided with radiating fins.

The utility model provides a technical scheme can include following beneficial effect:

the utility model discloses a two-way electrical control valve improves the leakproofness of valve gap and valve rod through setting up first seal assembly, second seal assembly and third seal assembly, and sealing reliability is high. Through setting up the graphite pad at the nearest first seal assembly apart from the valve body, the graphite pad has high temperature resistance, can effectively separate the medium between valve gap and the valve rod, improves second seal assembly and third seal assembly's life, and then improves two electric control valve's life.

Drawings

Fig. 1 is a schematic structural view of a two-way electric control valve according to an embodiment of the present invention;

the valve comprises a valve body 1, a discharge channel 11, a feed channel 12, a sealing seat 14, a graphite ring 13, a valve cover 2, a heat radiating fin 21, a valve rod 3, a valve core 4, a driving piece 5, a first sealing assembly 6, a first graphite pad 61, a first positioning sleeve 62, a gland 63, a second sealing assembly 7, a second graphite pad 71, a compression spring 72, a combined sealing piece 73, a third sealing assembly 8, a sealing sleeve 81, a second positioning sleeve 82 and a locking cover 9.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A two-way electric control valve according to an embodiment of the present invention will be described with reference to fig. 1.

A two-way electric regulating valve comprises a valve body 1, a valve cover 2, a valve rod 3, a valve core 4 and a driving part 5, wherein the valve cover 2 is installed on the valve body 1, the valve core 4 is installed at one end of the valve rod 3, the driving part 5 is installed at the other end of the valve rod 3, the valve rod 3 penetrates through the valve cover 2 and extends into the valve body 1, the valve core 4 is positioned on a sealing seat 14 in the valve body 1, and the sealing seat is positioned on the valve body 1;

the valve cover 2 is provided with a through hole for the valve rod 3 to pass through, a first sealing assembly 6, a second sealing assembly 7 and a third sealing assembly 8 are arranged in the through hole, and the first sealing assembly 6, the second sealing assembly 7 and the third sealing assembly 8 are sequentially sleeved on the valve rod 3 along the direction from the valve core 4 to the driving part 5;

the first seal assembly 6 comprises a first graphite pad 61.

The utility model discloses a two-way electrical control valve improves the leakproofness of valve gap 2 and valve rod 3 through setting up first seal assembly 6, second seal assembly 7 and third seal assembly 8, and sealing reliability is high. Through setting up the graphite pad at the nearest first seal assembly 6 apart from valve body 1, the graphite pad has high temperature resistance, can effectively separate the medium between valve gap 2 and the valve rod 3, improves the life of second seal assembly 7 and third seal assembly 8, and then improves two-way electrical control valve's life.

In one embodiment, the driving member 5 is an electric driving member, an output end of the motor is in driving connection with a tail end of the valve rod 3, and the electric driving member is used for driving the valve rod 3 to move axially, so that the valve core 4 blocks a channel of the sealing seat 14 in the valve body 1 or communicates with a channel in the valve body 1. Specifically, the edge of the driving member 5 is fixed to the valve body 1 by a connecting rod.

Further, the first sealing assembly 6 further comprises a first positioning sleeve 62 and a pressing cover 63, the first graphite gasket 61 is located between the first positioning sleeve 62 and the pressing cover 63, the pressing cover 63 is fixedly connected with the end portion of the valve cover 2, and the pressing cover 63 is used for positioning the first positioning sleeve 62 and the first graphite gasket 61 in the through hole of the valve cover. Thus, the first seal assembly 6 is fixed to one end of the through hole of the bonnet 2, the positioning sleeve abuts against a step in the through hole of the bonnet 2, the gland 63 presses the first graphite pad 61 against the positioning sleeve, and the gland 63 is fixed to the end of the bonnet 2 by a bolt.

Furthermore, the side wall of the first positioning sleeve 62 is provided with a containing hole, and heat-resistant lubricating powder is filled in the containing hole, so that the heat resistance of the first positioning sleeve 62 is improved. Specifically, the heat-resistant lubricating powder is graphite teflon.

Further, the second sealing assembly 7 comprises a second graphite pad 71, a compression spring 72, a gasket and a combined sealing element 73 which are arranged in sequence, wherein the second graphite pad 71 is close to the first sealing assembly 6; the number of the second graphite pads 71 is at least one. The compression spring 72 is positioned between the second graphite pad 71 and the combined sealing element 73, the second graphite pad 71 is tightly pressed on a step in the through hole of the valve cover 2, the second graphite pad 71 can enhance the sealing effect, and the gasket is arranged so that the compression spring 72 and the combined sealing element 73 are not worn and damaged. Preferably, there are two second graphite pads 71.

Further, the combined sealing member 73 is composed of a plurality of stacked sealing rings, and the cross sections of the plurality of sealing rings are V-shaped with different angles. When the combined sealing member 73 is pressed, the sealing ring can provide radial pressure to the valve rod 3 to realize sealing based on radial expansion of V-shaped cross sections with different angles.

Further, the third sealing assembly 8 comprises a sealing sleeve 81 and an O-ring, wherein the O-ring is respectively mounted on the inner wall and the outer wall of the sealing sleeve 81; a second positioning sleeve 82 is arranged between the sealing sleeve 81 and the second sealing assembly 7, one end of the second positioning sleeve 82 abuts against the second sealing assembly 7, and the other end of the second positioning sleeve 82 abuts against the sealing sleeve 81.

It will be appreciated that when the driver 5 drives the valve stem 3 to move axially, the first seal assembly 6, the second seal assembly 7 and the third seal assembly 8 all move relative to the valve stem 3. The compression spring 72 may be compressed based on the sealing engagement of the valve stem 3 with the first seal assembly 6, the second seal assembly 7, and the third seal assembly 8. The sealing sleeve 81 with the O-shaped ring forms a movable soft sealing structure, and the sealing effect of the valve rod 3 during movement is guaranteed. Specifically, mounting grooves are formed in the inner wall and the outer wall of the sealing sleeve 81 respectively, and the O-shaped ring is located in the mounting grooves.

Furthermore, a locking cover 9 is fixed at one end of the through hole of the valve cover 2 close to the sealing sleeve, the locking cover 9 is in sliding fit with the valve rod 3, and the locking cover 9 is abutted to the third sealing component 8. The locking cover 9 is used for sealing the through hole of the valve cover 2 and positioning the second sealing assembly 7 and the third sealing assembly 8 in the through hole of the valve cover 2. A Y-shaped sealing ring is arranged between the valve rod 3 and the locking cover 9.

Further, the valve body 1 is provided with a discharge channel 11, a feeding channel 12 and a sealing seat 14, and the sealing seat 14 is communicated with the discharge channel 11 and the feeding channel 12; the inner wall of the sealing seat 14 is provided with a graphite ring 13, and the graphite ring 13 is positioned between the valve body 1 and the sealing seat 14. The graphite ring 13 can improve the matching sealing effect of the valve body 1 and the sealing seat 14. Specifically, when the driving part 5 drives the valve core 4 to block the seal seat 14, the two-way electric control valve plays a closing role, when the driving part drives the valve core 4 to be away from the seal seat 14, the discharge channel 11 is communicated with the feed channel 12, and the flow regulation that the discharge channel 11 is communicated with the feed channel 12 can also be realized by adjusting the relative position of the valve core 4 and the graphite ring 14.

Further, the outer wall of the valve cover 2 is provided with the radiating fins 21, so that the radiating effect of the valve cover 2 is improved, the heat resistance of the valve cover 2 is further improved, and the service life is prolonged.

Other constructions and operations of a two-way electrically-operated regulator valve according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A two-way electric control valve is characterized by comprising a valve body, a valve cover, a valve rod, a valve core and a driving piece, wherein the valve cover is arranged on the valve body;

the first seal assembly includes a first graphite pad.

2. The two-way electric regulator valve according to claim 1, wherein the first seal assembly further comprises a first positioning sleeve and a gland, the first graphite gasket is positioned between the first positioning sleeve and the gland, the gland is fixedly connected with an end of the valve cover, and the gland is used for positioning the first positioning sleeve and the first graphite gasket in a through hole of the valve cover.

3. The two-way electric control valve according to claim 2, wherein the side wall of the first positioning sleeve is provided with a receiving hole, and the receiving hole is filled with heat-resistant lubricating powder.

4. The two-way electric control valve of claim 3, wherein the second seal assembly comprises a second graphite pad, a compression spring, a gasket and a combined seal member arranged in sequence, the second graphite pad being adjacent to the first locating sleeve;

the number of the second graphite pads is at least one.

5. A two-way electric control valve according to claim 4 wherein said combination seal comprises a plurality of stacked seal rings having a V-shaped cross-section, said plurality of seal rings having different V-shaped cross-sectional angles.

6. A two-way electric control valve according to claim 5 wherein said third seal assembly comprises a sealing sleeve and O-rings mounted to the inner and outer walls of said sealing sleeve, respectively;

7. The two-way electric control valve of claim 6, wherein a locking cap is fixed to one end of the through hole adjacent to the seal cartridge, the locking cap is in sliding fit with the through hole, and the locking cap abuts against the third seal assembly.

8. The two-way electric control valve of claim 7, wherein the valve body is provided with a discharge passage, a feed passage and a seal seat, the seal seat communicating the discharge passage and the feed passage;

9. The two-way electrically actuated regulator valve of claim 8 wherein the outer wall of the valve cover is provided with heat dissipating fins.