CN214743565U

CN214743565U - Check valve

Info

Publication number: CN214743565U
Application number: CN202120877561.5U
Authority: CN
Inventors: 缪军华; 陈才尚
Original assignee: Taizhou Shangyi Valve Co ltd
Current assignee: Taizhou Shangyi Valve Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-11-16
Anticipated expiration: 2031-04-26

Abstract

The utility model relates to a check valve, including valve body, case, be equipped with the intercommunication passageway in the valve body, the case is equipped with sealed pad, embedded groove, and the case is equipped with spacing ring portion, and the inner wall of intercommunication passageway is equipped with the butt face, and intercommunication passageway inner wall is equipped with the butt piece, and the case is equipped with the spring, and the butt piece is equipped with and supplies the perforation, but the valve body split is intake portion, play water portion, and the intercommunication passageway divide into water section, play water section, and the butt face is equipped with the bulge loop, and the outside inner wall of embedded groove is equipped with the direction cambered surface. By arranging the embedded groove and the limiting ring part, the sealing gasket can be stably limited on the valve core, so that the check valve is not easy to leak liquid; the spring is arranged, so that the sealing effect of the sealing gasket on the abutting surface is better; through setting up the direction cambered surface, the personnel of being convenient for pack into the embedded groove with sealed the pad.

Description

Check valve

Technical Field

The application relates to the technical field of valves, in particular to a check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type.

Fig. 1 is a current check valve, including valve body 1, is equipped with intercommunication passageway 13 in the valve body 1, it is equipped with case 2 to slide on the intercommunication passageway 13 inner wall, and the cover is equipped with sealed pad 21 on the case 2, sticiss the stainless steel preforming 3 of sealed pad 21, and the surface of sealed pad 21 is used for offsetting with the inner wall of intercommunication passageway 13 to sealed with intercommunication passageway 13, stainless steel preforming 3 is fixed on case 2 through cold punching interference fit.

In the prior art, the stainless steel pressing sheet with the defects of the check valve is not stable enough with the fixed connection of the valve core, the valve core works frequently, the influence of water flow easily causes the stainless steel pressing sheet to be connected with the valve core loosely, the stainless steel pressing sheet deviates from the axial direction of the valve core, the stainless steel pressing sheet cannot tightly press the sealing ring, the sealing ring is easy to deviate, the leakage phenomenon easily occurs at the sealing ring, and the improvement is needed urgently.

SUMMERY OF THE UTILITY MODEL

In order to make the difficult weeping phenomenon that appears of check valve, this application provides a check valve.

The application provides a check valve adopts following technical scheme:

the utility model provides a check valve, includes valve body, case, be equipped with the intercommunication passageway in the valve body, case sliding connection is on the inner wall of intercommunication passageway, the case is equipped with the embedded groove of sealed pad, the embedding of confession sealed pad embedding, sealed coaxial cup jointing on the case, the case has set firmly spacing ring portion, spacing ring portion and case integrated into one piece, sealed pad is located between the diapire of spacing ring portion and embedded groove, sealed two surfaces of filling up are used for respectively offsetting with cell wall, the spacing ring portion of embedded groove, the surface that sealed pad deviates from the embedded groove is used for pasting in order to communicate the one-way blocking of passageway with the butt face that sets up on the intercommunication passageway inner wall mutually.

Through adopting above-mentioned technical scheme, carry on spacingly from a plurality of directions to sealed the pad through embedded groove and stopper, make sealed the pad difficult in-process emergence pine that uses take place to take off the phenomenon, spacing ring portion and case integrated into one piece for spacing ring portion can not send under the condition that this check valve frequently used and take off, makes this check valve be difficult for appearing the weeping phenomenon, and its life can prolong in addition.

Preferably, the valve core is made of copper.

Through adopting above-mentioned technical scheme, the corrosion resistance of copper is preferred, and the case live time that it was made is longer for the life of this check valve can prolong.

Preferably, the inner wall of the communicating channel is provided with a butting block, the valve core is sleeved with a spring for tightly butting the sealing gasket against the butting surface, two ends of the spring respectively butt against the butting block and the valve core, and the elastic direction of the spring is along the sliding direction of the valve core.

Through adopting above-mentioned technical scheme, the setting of spring can increase the low pressure that sealed pad and butt face make its sealed effect better, makes the water be difficult for flowing backward.

Preferably, the number of the abutting blocks is two along the sliding direction of the valve core, and the abutting blocks are provided with through holes for the end parts of the valve core to penetrate into and slide.

Through adopting above-mentioned technical scheme, through the fenestrate inner wall on two butt joint pieces to the spacing of case, make the slip direction of case more accurate.

Preferably, but the valve body split is into water inlet portion, play water portion, and water inlet portion, play water portion pass through threaded connection, the intercommunication passageway divide into inhalant canal, exhalant canal, inhalant canal is located water inlet portion, exhalant canal is located play water portion, the butt face is the terminal surface of water inlet portion, inhalant canal link up to the butt face.

Through adopting above-mentioned technical scheme for the valve body is dismantled and assembled, so that personnel overhaul the change to the case.

Preferably, the abutting surface is provided with a convex ring, and the end surface of the convex ring departing from the abutting surface is used for abutting against the surface of the sealing gasket.

By adopting the technical scheme, the arrangement of the convex ring reduces the contact area between the abutting surface and the sealing gasket, increases the pressure between the abutting surface and the sealing gasket, and increases the sealing performance between the abutting surface and the sealing gasket.

Preferably, an end surface of the convex ring departing from the abutting surface is an arc surface.

By adopting the technical scheme and the arrangement of the arc surface, the convex ring is not easy to damage the surface of the sealing gasket in the installation and use processes of the valve core.

Preferably, the inner wall of the outer side of the embedded groove is provided with a guide arc surface, and the side edge of the guide arc surface, which is far away from the bottom wall of the embedded groove, is connected with the outer side wall of the valve core.

Through adopting above-mentioned technical scheme, the setting of direction cambered surface has enlarged the notch area of embedded groove, can lead to sealed the pad simultaneously, makes sealed pad change get into in the embedded groove completely.

In summary, the present application includes at least one of the following beneficial technical effects:

by arranging the embedded groove and the limiting ring part, the sealing gasket can be stably limited on the valve core, so that the check valve is not easy to leak liquid;

the spring is arranged, so that the sealing effect of the sealing gasket on the abutting surface is better;

through setting up the direction cambered surface, the personnel of being convenient for pack into the embedded groove with sealed the pad.

Drawings

Fig. 1 is a sectional view of a conventional check valve.

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

Fig. 3 is an enlarged view of fig. 2 at a.

Description of reference numerals: 1. a valve body; 11. a water inlet part; 12. a water outlet part; 13. a communication channel; 131. a water inlet channel; 132. a water outlet channel; 14. a butting block; 15. perforating; 2. a valve core; 21. a gasket; 22. a groove is embedded; 23. a limit ring part; 24. an abutting surface; 25. a convex ring; 26. a circular arc surface; 27. a guiding cambered surface; 28. round corners; 29. a spring; 3. and (5) stainless steel tabletting.

Detailed Description

The present application is described in further detail below with reference to figures 2-3.

The embodiment of the application discloses a check valve. Referring to fig. 2, a check valve comprises a valve body 1 and a valve core 2, wherein a communication channel 13 is arranged in the valve body 1, the valve core 2 is connected to the inner wall of the communication channel 13 in a sliding manner, a sealing gasket 21 is arranged on the valve core 2 along the axial direction of the valve core 2, the sealing gasket 21 is annular, the sealing gasket 21 is made of rubber, a butting surface 24 for butting the sealing gasket 21 is arranged in the communication channel 13, and when the valve core 2 butts against the butting surface 24, the communication channel 13 is sealed by the valve core 2.

The valve body 1 can be divided into a water inlet portion 11 and a water outlet portion 12, the water inlet portion 11 is provided with a water inlet channel 131, the water outlet portion 12 is provided with a water outlet channel 132, the water inlet channel 131 and the water outlet channel 132 are respectively communicated with two ends of the water inlet portion 11 and the water outlet portion 12, an external thread is arranged at the end portion of the water inlet portion 11, an internal thread is arranged inside the water outlet channel 132, the end portion of the water inlet portion 11 extends into the water outlet channel 132 to establish a threaded connection, the water inlet channel 131 and the water outlet channel 132 are combined to form a communicating channel 13, and the abutting surface 24 is an end surface of the water inlet portion 11.

The valve body 1 is provided with one abutting block 14, the abutting block 14 is fixedly connected to the inner walls of the water inlet channel 131 and the water outlet channel 132, and the distribution directions of the two abutting blocks 14 are along the axial direction of the valve core 2. The valve core 2 is sleeved with a spring 29 for tightly abutting the sealing gasket 21 with the abutting surface 24, the spring 29 is positioned between the two abutting blocks 14, two ends of the spring 29 respectively abut against the abutting blocks 14 on the water outlet part 12 and the valve core 2, and the elastic force direction of the spring 29 is along the axial direction of the valve core 2. The spring 29 has an outward expansion force to push the valve element 2, so that the sealing gasket 21 is pressed against the abutting surface 24 to form a seal, thereby preventing the water in the water outlet channel 132 from flowing backward into the water inlet channel 131.

The abutting surface 24 is fixedly connected with a convex ring 25, the convex ring 25 is coaxial with the water inlet channel 131, the end face of the convex ring 25, which deviates from the abutting surface 24, is used for abutting against the surface of the sealing gasket 21, the area of the end face of the convex ring 25, which deviates from the abutting surface 24, is far smaller than that of the abutting surface 24, the contact area of the abutting surface 24 and the sealing gasket 21 is reduced by the arrangement of the convex ring 25, the pressure between the convex ring 25 and the sealing gasket 21 is increased, and the sealing and blocking effect on the water body flowing backwards from the water outlet channel 132 is better.

The end face of the convex ring 25 departing from the abutting surface 24 is an arc surface 26, and the arrangement of the arc surface 26 ensures that the convex ring 25 is not easy to damage the sealing gasket 21 in the installation and use processes and the sealing performance of the sealing gasket is damaged.

The material of the valve core 2 is copper, the material of the valve core 2 in other embodiments can also be stainless steel, an embedded groove 22 for embedding the sealing gasket 21 is formed in a part of the valve core 2 close to the water inlet channel 131, the embedded groove 22 is annular, two radial side groove walls of the embedded groove 22 are respectively abutted to two side walls of the sealing gasket 21, a notch of the embedded groove 22 faces the water inlet channel 131, the valve core 2 is fixedly provided with a limiting ring portion 23, the limiting ring portion 23 protrudes out of the side wall of the valve core 2, the sealing gasket 21 is located between the bottom walls of the limiting ring portion 23 and the embedded groove 22, the area of the limiting ring portion 23 is far smaller than that of the sealing gasket 21, and the surface of the sealing gasket 21 departing from the embedded groove 22 can be abutted to the convex ring 25 to unidirectionally block the communicating channel 13. The limit ring part 23 and the valve core 2 are integrally formed, and the surface of the limit ring part 23 is provided with a fillet 28.

Incidentally, the sealing gasket 21 has a better deformation capability, so that a person can expand the inner hole of the sealing gasket 21, and the inner hole is embedded into the embedding groove 22 through the limiting ring part 23. The setting of fillet 28, the personnel of being convenient for expand the back with sealed pad 21, when manual embolia embedded groove 22, spacing ring portion 23 is difficult with sealed pad 21 fish tail.

Referring to fig. 2 and 3, the outer side inner wall of the embedded groove 22 is provided with a guide arc surface 27, the side of the guide arc surface 27 away from the embedded groove 22 is inclined with respect to the axis of the embedded groove 22, and the side of the guide arc surface 27 away from the bottom wall of the embedded groove 22 is connected with the outer side wall of the valve element 2, so that a person can conveniently embed the sealing gasket 21 into the embedded groove 22.

The implementation principle of the check valve in the embodiment of the application is as follows: three side cell walls and spacing ring portion 23 through the spacing groove are sealed the pad 21 and are gone on about from top to bottom four directions the full aspect spacing, make sealed pad 21 difficult emergence not hard up, and spacing ring portion 23 and embedded groove 22 all with case 2 integrated into one piece, its also difficult phenomenon that takes off of appearing in the frequent motion of this check valve for the life of this check valve is longer, also is difficult for taking off the weeping phenomenon because of sealed pad 21 pine.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a check valve, includes valve body (1), case (2), be equipped with intercommunication passageway (13) in valve body (1), case (2) sliding connection is on the inner wall of intercommunication passageway (13), its characterized in that: the utility model discloses a valve core, including case (2), sealed pad (21), spacing ring portion (23), case (21), sealed pad (21) coaxial cup joint on case (2), case (2) have set firmly spacing ring portion (23), spacing ring portion (23) and case (2) integrated into one piece, sealed pad (21) are located between the diapire of spacing ring portion (23) and embedded groove (22), the two surfaces of sealed pad (21) are used for respectively offsetting with cell wall, spacing ring portion (23) of embedded groove (22), the circumference lateral wall of sealed pad (21) also offsets with the cell wall of embedded groove (22), the surface that sealed pad (21) deviates from embedded groove (22) is used for and sets up butt face (24) on intercommunication passageway (13) inner wall and pastes in order to communicate passageway (13) one-way blocking mutually.

2. A check valve as claimed in claim 1, wherein: the valve core (2) is made of copper.

3. A check valve as claimed in claim 1, wherein: the inner wall of the communication channel (13) is provided with a butting block (14), the valve core (2) is sleeved with a spring (29) which is used for butting the sealing gasket (21) against the butting surface (24), two ends of the spring (29) are respectively butted against the butting block (14) and the valve core (2), and the elastic force direction of the spring (29) is along the sliding direction of the valve core (2).

4. A check valve as claimed in claim 3, wherein: the two abutting blocks (14) are arranged along the sliding direction of the valve core (2), and the abutting blocks (14) are provided with through holes (15) for the end parts of the valve core (2) to penetrate into and slide.

5. A check valve as claimed in claim 1, wherein: the detachable of valve body (1) is intake portion (11), play water portion (12), and intake portion (11), play water portion (12) pass through threaded connection, intercommunication passageway (13) divide into water passageway (131), exhalant canal (132), water passageway (131) are located intake portion (11), exhalant canal (132) are located play water portion (12), butt face (24) are the terminal surface of intake portion (11), intake passageway (131) link up to butt face (24).

6. A check valve according to claim 5, wherein: the abutting surface (24) is provided with a convex ring (25), and the end face of the convex ring (25) departing from the abutting surface (24) is used for abutting against the surface of the sealing gasket (21).

7. A check valve according to claim 6, wherein: the end face of the convex ring (25) departing from the abutting-against face (24) is an arc face (26).

8. A check valve as claimed in claim 1, wherein: the lateral wall that embedded groove (22) diapire was kept away from to direction cambered surface (27) is connected with the lateral wall of case (2) on the outside inner wall of embedded groove (22).