CN218440825U

CN218440825U - Stop check valve with good sealing performance

Info

Publication number: CN218440825U
Application number: CN202222480552.XU
Authority: CN
Inventors: 莫震; 谭敬罕; 黄汉敏; 温耀信; 陈堪夏; 陈伟楠; 罗国辉; 周志伟; 王文化; 张庆旺; 吴敏珊
Original assignee: Zhongshan Kingdom Flow Control Co ltd
Current assignee: Zhongshan Kingdom Flow Control Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-02-03
Anticipated expiration: 2032-09-19

Abstract

The utility model discloses a better check valve that ends of leakproofness, include: the valve component is provided with a valve cavity, and a table body and a communicating hole arranged on the table body are arranged in the valve cavity; two medium channels which are respectively arranged at two sides of the valve component and are communicated through a communication hole; the valve core is arranged in the valve cavity in a vertically movable mode, the axis of the valve core is perpendicular to the table body, the valve core can move to close the communication hole, and the valve core is in sealing fit with the table body; the pushing structure is arranged between the valve core and the valve assembly and can act on the valve core, so that the valve core keeps a sealing matching state when being abutted to the platform body, and no matter the valve assembly is horizontally installed or vertically installed, the position of the valve core cannot be influenced by gravity and fluid pushing, and the phenomenon of deviation displacement occurs, so that the valve core can play a sealing role when being attached to the platform body, the reliability of structure operation is ensured, the stop check valve can be installed and used at any installation angle, and the adaptability is good.

Description

Stop check valve with good sealing performance

Technical Field

The utility model relates to a valve correlation technique field, in particular to better check valve of leakproofness.

Background

The stop check valve is arranged in a pipeline system, and can stop a medium and prevent the medium from flowing back. The structure form is similar to the stop valve, but the valve rod and the valve core are not fixedly connected. When the valve rod descends to press the valve core on the sealing valve seat, the valve rod plays a role of a stop valve; after the valve rod rises, the valve rod plays the role of a check valve. However, in the use process of the traditional stop check valve, because the valve core is attached to the sealing valve seat through the action of gravity to play a sealing role, the valve is required to be installed at a position vertical to the horizontal plane when being installed, so that the installation direction of the stop check valve is limited; in addition, the sealing mode between the valve core and the sealing valve seat is metal hard sealing, and when the machining precision does not meet the requirement or the matched sealing surfaces are scratched by particles in a medium in the using process, the situation of valve leakage is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a better check valve that ends of leakproofness, the angle can be installed wantonly by the check valve, and adaptability is better.

According to the utility model discloses better check valve that ends of leakproofness, include: the valve component is provided with a valve cavity, and a platform body and a communication hole arranged in the platform body are arranged in the valve cavity; the two medium channels are respectively arranged at two sides of the valve component and are communicated through the communication hole; the valve core is arranged in the valve cavity in a vertically movable mode, the axis of the valve core is perpendicular to the table body, the valve core can move to close the communication hole, and the valve core is in sealing fit with the table body; the pushing structure is arranged between the valve core and the valve component and can act on the valve core so that the valve core can keep a sealing matching state when being abutted against the platform body.

According to the utility model discloses better by check valve of leakproofness has following beneficial effect at least: through the arrangement, the pushing structure is arranged between the valve core and the valve assembly, and no matter the valve assembly is horizontally installed or vertically installed, the position of the valve core cannot be affected by gravity and fluid pushing to cause the phenomenon of inclined displacement, so that the valve core can play a role in sealing when being attached to the platform body, the reliability of structural operation is ensured, the stop check valve can be installed and used at any installation angle, and the adaptability is good.

According to some embodiments of the utility model, push up the structure and include the elastic component, the one end butt of elastic component in the valve pocket, the other end butt in the case.

According to some embodiments of the utility model, the top pushes away the structure and includes the adjusting shim plate of adjustable thickness, the adjusting shim plate set up in the case with between the elastic component, perhaps the adjusting shim plate set up in the valve component with between the elastic component.

According to some embodiments of the invention, the resilient member is a cylindrical spring.

According to some embodiments of the utility model, be provided with first recess on the case, the valve member be provided with the second recess that first recess corresponds, the one end of elastic component is located first recess, the other end is located the second recess.

According to some embodiments of the utility model, be provided with seal structure on the case, seal structure set up in on the case towards the one end of stage body, the case is closed during the intercommunicating pore, seal structure is used for sealing the stage body with the clearance between the two of case.

According to some embodiments of the utility model, seal structure locates for the cover the sealed pad of case, be provided with on the case and be used for the restriction sealed location structure who reciprocates.

According to the utility model discloses a some embodiments, on the case towards the one end of stage body has set gradually installation double-screw bolt, the concave position of first annular and the concave position of second annular from top to bottom, sealed pad set up in the concave position of first annular, location structure includes: the positioning plate is arranged in the second annular concave position, and one end surface of the positioning structure is abutted to the sealing gasket so as to limit the sealing gasket to move up and down relative to the first annular concave position; and the positioning nut is in threaded connection with the mounting stud, and is abutted against the other end face of the positioning plate.

According to some embodiments of the invention, the valve assembly comprises: the two medium channels are arranged on the valve body; the valve cover is fixedly connected with the valve body, the valve cavity is formed between the valve cover and the valve body, an installation channel communicated with the valve cavity and a valve rod penetrating the installation channel in a vertically movable mode are arranged on the valve cover, and the valve rod can drive the valve core to abut against the table body when moving downwards.

According to some embodiments of the utility model, the inner wall of installation passageway with be provided with packing unit between the valve rod, be provided with fastening structure on the valve cap, fastening structure acts on in order to keep packing unit is in encapsulated situation.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a stop check valve according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a check valve according to an embodiment of the present invention;

reference numerals:

the valve assembly 10, the valve cavity 11, the table body 12, the communication hole 13, the second groove 14, the valve body 15, the valve cover 16, the mounting channel 161 and the valve rod 17;

a media passage 20, a valve core 30, a first groove 31, a mounting stud 32;

a pushing structure 40, an elastic piece 41 and an adjusting shim plate 42;

the sealing gasket 50, the positioning plate 61, the positioning nut 62, the packing unit 71, the southwestern 81, the fixed pressing plate 82 and the connecting assembly 83.

Detailed Description

Reference will now be made in detail to 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 function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 and fig. 2, the stop check valve with better sealing performance according to the embodiment of the present invention includes: a valve assembly 10 provided with a valve cavity 11, wherein a table body 12 and a communication hole 13 arranged on the table body 12 are arranged in the valve cavity 11; two medium channels 20 respectively arranged at two sides of the valve assembly 10, and the two medium channels 20 are communicated through the communication hole 13; the valve core 30 is arranged in the valve cavity 11 in a vertically movable mode, the axis of the valve core 30 is perpendicular to the table body 12, the valve core 30 can move to close the communication hole 13, and the valve core 30 is in sealing fit with the table body 12; the pushing structure 40 is disposed between the valve core 30 and the valve assembly 10, and the pushing structure 40 can act on the valve core 30 to keep the valve core 30 in a sealing fit state when abutting against the table body 12.

According to the utility model discloses the better check valve that ends of leakproofness, through the aforesaid setting, be provided with between case 30 and valve component 10 and push away structure 40, no matter valve component 10 horizontal installation still installs perpendicularly, the position of case 30 can not receive the influence that gravity and fluid promoted and the phenomenon that the incline shifted appears for can play sealed effect when case 30 and stage body 12 laminate, guarantee the reliability of structure operation, the messenger can adapt to arbitrary installation angle's installation and use by the check valve, adaptability is better.

It will be appreciated that, as shown in fig. 1 and 2, in some embodiments of the present invention, the valve assembly 10 includes: the valve body 15, two medium channels 20 are set in the valve body 15; and a bonnet 16 fixedly connected to the valve body 15, wherein a valve cavity 11 is formed between the bonnet 16 and the valve body 15, the bonnet 16 is provided with an installation passage 161 communicated with the valve cavity 11 and a valve rod 17 vertically penetrating the installation passage 161, and the valve rod 17 can drive the valve core 30 to be abutted against the table body 12 when moving downwards. With the structure, the valve rod 16152 moves downwards relative to the mounting channel 161, so that the valve core 30 is pushed to close the communicating hole 13 to move, and the structure is reasonable and reliable in transmission.

Specifically, as shown in fig. 2, in some embodiments of the present invention, the pushing structure 40 includes an elastic member 41, one end of the elastic member 41 abuts against the valve cavity 11, and the other end abuts against the valve core 30. By adopting the structure, the elastic part 41 is arranged, when the side-mounted valve core 30 can keep elastic abutting connection with the table body 12, the stability is greatly improved, a good sealing effect can be achieved, the structure is simple, and the assembly is convenient.

It should be noted that, in some embodiments of the present invention, the elastic member 41 is a cylindrical spring. The cylindrical spring is sleeved on the valve rod 17; of course, in some embodiments, the elastic member 41 may also be an elastic sheet, and the like, which is not limited herein.

It will be appreciated that, as shown in fig. 2, in some embodiments of the present invention, the pushing structure 40 includes a shim plate 42 with adjustable thickness, and the shim plate 42 is disposed between the valve core 30 and the elastic member 41. By adopting the structure, the thickness of the adjusting shim plate 42 can be changed, so that the sealing acting force applied to the valve core 30 by the elastic element 41 can be adjusted, the discharge pressure of the valve component 10 can be further adjusted, and the pressure balance at the front end of the valve can be favorably ensured. Of course, in some embodiments, the trim plate 42 is disposed between the valve assembly 10 and the resilient member 41.

It will be appreciated that, as shown in fig. 2, in some embodiments of the present invention, the valve core 30 is provided with a first groove 31, the valve assembly 10 is provided with a second groove 14 corresponding to the first groove 31, one end of the elastic member 41 is located in the first groove 31, and the other end is located in the second groove 14. Through the arrangement, the valve rod 17 is sleeved with the cylindrical spring, one end of the cylindrical spring abuts against the first groove 31, the other end of the cylindrical spring abuts against the second groove 14, the cylindrical spring is installed and positioned, the stability is good, and the cylindrical spring can exert a sealing acting force on the valve core 30 conveniently.

As shown in fig. 2, in some embodiments of the present invention, a sealing structure is disposed on the valve core 30, the sealing structure is disposed on one end of the valve core 30 facing the table 12, and when the valve core 30 closes the communication hole 13, the sealing structure is used to seal a gap between the table 12 and the valve core 30, so as to further improve the sealing performance.

In some embodiments of the present invention, the sealing structure is a sealing pad 50 sleeved on the valve core 30, and the valve core 30 is provided with a positioning structure for limiting the up-and-down movement of the sealing pad 50. Through the arrangement, the sealing performance is further improved, the structure is simple, the positioning is reliable, and the stability is good.

It can be understood that, as shown in fig. 2, in some embodiments of the present invention, the mounting stud 32, the first annular concave position and the second annular concave position are sequentially disposed on the valve core 30 from top to bottom toward the end of the table 12, the sealing gasket 50 is disposed in the first annular concave position, and the positioning structure includes: the positioning plate 61 is arranged in the second annular concave position, and one end surface of the positioning structure is abutted against the sealing gasket 50 so as to limit the sealing gasket 50 to move up and down relative to the first annular concave position; and a positioning nut 62 screwed to the mounting stud 32, the positioning nut 62 abutting against the other end surface of the positioning plate 61. By adopting the structure, the sealing gasket 50 is fixed on the valve core 30 through the positioning plate 61 during installation, and the structure is simple, and the disassembly, the assembly and the maintenance are convenient.

It is contemplated that, as shown in fig. 1 and 2, in some embodiments of the present invention, a packing unit 71 is provided between the inner wall of the mounting passage 161 and the valve stem 17, and a fastening structure is provided on the bonnet 16, the fastening structure acting to maintain the packing unit 71 in a sealed state. By adopting the structure, the packing unit 71 continuously keeps a sealing state, the sealing tightness is increased, the stability is better, impurities and the like can be prevented from permeating into the valve body 15, and the valve is durable.

As shown in fig. 1 and 2, in some embodiments of the present invention, the fastening structure includes: a southward pointing 81 which is sleeved on the valve rod 17 and pressed against the upper side of the packing unit 71; a fixed pressing plate 82 which is sleeved on the valve rod 17 and presses the upper side of the southward pointing 81; and the connecting component 83 is used for connecting the fixed pressure plate 82 with the valve cover 16. By adopting the structure, the packing unit 71 continuously keeps a sealing state, the tightness of sealing is increased, the structure is simple, the assembly is reliable, the stability is good, impurities and the like can be prevented from permeating into the valve body 15 and the valve cover 16, and the packing valve is durable. It should be noted that the connecting assembly 83 includes a loose joint bolt and a connecting nut.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. Stop check valve that leakproofness is better, characterized by includes:

the valve assembly (10) is provided with a valve cavity (11), and a table body (12) and a communication hole (13) arranged on the table body (12) are arranged in the valve cavity (11);

two medium channels (20) which are respectively arranged at two sides of the valve component (10), and the two medium channels (20) are communicated through the communication hole (13);

the valve core (30) is arranged in the valve cavity (11) in a vertically movable mode, the axis of the valve core (30) is perpendicular to the table body (12), the valve core (30) can move to close the communication hole (13), and the valve core (30) is in sealing fit with the table body (12);

the pushing structure (40) is arranged between the valve core (30) and the valve component (10), and the pushing structure (40) can act on the valve core (30) so that the valve core (30) keeps a sealing fit state when abutting against the table body (12).

2. The stop check valve with better sealing performance according to claim 1, wherein the pushing structure (40) comprises an elastic member (41), one end of the elastic member (41) abuts against the valve cavity (11), and the other end abuts against the valve core (30).

3. The stop check valve with better sealing performance according to claim 2, wherein the pushing structure (40) comprises an adjusting shim plate (42) with adjustable thickness, the adjusting shim plate (42) is arranged between the valve core (30) and the elastic member (41), or the adjusting shim plate (42) is arranged between the valve assembly (10) and the elastic member (41).

4. The check valve as claimed in claim 3, wherein the elastic member (41) is a cylindrical spring.

5. The stop check valve with better sealing performance according to claim 2, characterized in that the valve core (30) is provided with a first groove (31), the valve assembly (10) is provided with a second groove (14) corresponding to the first groove (31), one end of the elastic element (41) is positioned in the first groove (31), and the other end is positioned in the second groove (14).

6. The stop check valve with better sealing performance according to claim 1, characterized in that the valve core (30) is provided with a sealing structure, the sealing structure is arranged on one end of the valve core (30) facing the table body (12), and the sealing structure is used for sealing a gap between the table body (12) and the valve core (30) when the valve core (30) closes the communication hole (13).

7. The stop check valve with better sealing performance according to claim 6, wherein the sealing structure is a sealing gasket (50) sleeved on the valve core (30), and a positioning structure for limiting the up-and-down movement of the sealing gasket (50) is arranged on the valve core (30).

8. The stop check valve with better sealing performance according to claim 7, characterized in that a mounting stud (32), a first annular concave position and a second annular concave position are sequentially arranged on one end of the valve core (30) facing the table body (12) from top to bottom, the sealing gasket (50) is arranged in the first annular concave position, and the positioning structure comprises:

the positioning plate (61) is arranged in the second annular concave position, and one end face of the positioning structure is abutted against the sealing gasket (50) so as to limit the sealing gasket (50) to move up and down relative to the first annular concave position;

and the positioning nut (62) is in threaded connection with the mounting stud (32), and the positioning nut (62) is abutted against the other end face of the positioning plate (61).

9. The better sealing check valve of claim 1, wherein the valve assembly (10) comprises:

a valve body (15), both of the medium passages (20) being provided in the valve body (15);

the valve cover (16) is fixedly connected to the valve body (15), the valve cavity (11) is formed between the valve cover (16) and the valve body (15), an installation channel (161) communicated with the valve cavity (11) and a valve rod (17) penetrating through the installation channel (161) in a vertically movable mode are arranged on the valve cover (16), and the valve rod (17) can drive the valve core (30) to abut against the table body (12) when moving downwards.

10. The stop check valve with better sealing performance according to claim 9, characterized in that a packing unit (71) is arranged between the inner wall of the installation channel (161) and the valve rod (17), and a fastening structure is arranged on the valve cover (16) and acts to maintain the packing unit (71) in a sealing state.