CN217713694U - Valve element assembly and stop valve - Google Patents

Abstract

The utility model provides a case subassembly and stop valve, the case subassembly includes: the push rod is provided with an installation groove, and the installation groove is provided with a matching plane; the case, case include interconnect's installation section and shutoff section, and the installation section is located the mounting groove, and installation section and mounting groove are at least in the spacing cooperation of axial, and the surface that the installation section deviates from the one end of shutoff section is the cambered surface, cambered surface and cooperation plane butt. By adopting the scheme, the installation groove is provided with the matching plane and can be abutted against the cambered surface arranged at the installation section, so that when the push rod pushes the valve core to move, the force of the push rod acting on any point of the cambered surface can point to the center of the cambered surface, the direction of the force is coaxial with the valve core, the valve core cannot radially shift in the moving process, and the sealing effect is further ensured; and push rod and case in this scheme adopt the mode that the components of a whole that can function independently set up, have reduced the requirement to size precision to the processing degree of difficulty has been reduced.

Description

Valve element assembly and stop valve

Technical Field

The utility model relates to a stop valve technical field particularly, relates to a case subassembly and stop valve.

Background

At present, a stop valve mainly comprises components such as a valve seat, a push rod, a valve core and the like, wherein the push rod and the valve core are generally in a plane matching or integrated structure, and the influence of processing and operation on sealing is large; and the push rod pushes the valve core to generate radial deviation in the moving process of the valve core, so that the sealing effect of the stop valve is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a case subassembly and stop valve to the problem of radial skew can take place at the in-process that removes of case subassembly among the solution prior art.

In order to solve the above problem, according to the utility model discloses an aspect, the utility model provides a case subassembly, include: the push rod is provided with an installation groove, and the installation groove is provided with a matching plane; the case, case include interconnect's installation section and shutoff section, and the installation section is located the mounting groove, and installation section and mounting groove are at least in the spacing cooperation of axial, and the surface that the installation section deviates from the one end of shutoff section is the cambered surface, cambered surface and cooperation plane butt.

Furthermore, the matching plane is perpendicular to the axis of the push rod, the cambered surface is a part of a spherical surface, and the spherical center of the spherical surface is positioned on the axis of the valve core.

Furthermore, the installation section comprises a first section and a second section which are connected with each other, the diameter of the first section is larger than that of the second section, the first section is provided with an arc surface, and the second section is connected with the blocking section; the mounting groove is a T-shaped groove, the T-shaped groove comprises a transverse groove and a vertical groove which are mutually communicated, and the transverse groove is provided with a matching plane; wherein, first pole section is located the transverse groove, and the both ends of first pole section are in the spacing cooperation of axial with the inner wall of transverse groove respectively, and the second pole section is located perpendicular inslot.

Further, the opening of mounting groove is located the lateral wall of push rod, and the opening of mounting groove is used for taking out or packing into the installation section.

According to the utility model discloses a stop valve is provided to another aspect, and the stop valve includes disk seat and foretell case subassembly, and the disk seat has the first class through-hole that holds the chamber and communicate with holding the chamber, and the case subassembly sets up in holding the intracavity with axially movable, and the shutoff section of case subassembly is used for opening or closes first class through-hole.

Further, the push rod includes interconnect's linkage segment and cooperation section, and the diameter of linkage segment is greater than the diameter of cooperation section, and the cooperation section has the mounting groove, the lateral wall of linkage segment and the inner wall threaded connection who holds the chamber.

Further, hold the chamber including first hole section, second hole section and the third hole section of mutual intercommunication, first class through-hole and third hole section intercommunication, the aperture of first hole section is greater than the aperture of second hole section, the aperture of second hole section is greater than the aperture of third hole section, the inner wall of first hole section and the lateral wall screw-thread fit of linkage segment, cooperation section and the cooperation of second hole section, shutoff section and the cooperation of third hole section.

Furthermore, the blocking section comprises a third section, a fourth section and a fifth section which are connected in sequence, the third section is connected with the mounting section, the diameter of the fourth section is larger than that of the third section and that of the fifth section, and the fifth section is used for opening or closing the first flow through hole; the fourth rod section is provided with a sealing groove, the valve core assembly further comprises a sealing ring, the sealing ring is arranged in the sealing groove, and the sealing ring is in sealing fit with the inner wall of the accommodating cavity.

Furthermore, the valve core assembly further comprises an annular gasket arranged in the sealing groove, the annular gasket is located on one side, facing the push rod, of the sealing ring, and the annular gasket is abutted to the sealing ring.

Furthermore, the stop valve also comprises a baffle ring arranged in the accommodating cavity, the baffle ring is connected with the inner wall of the accommodating cavity, and the baffle ring is matched with one end of the push rod far away from the valve core in a stopping way; the side wall of the valve seat is also provided with a second flow through hole, and the first flow through hole is communicated with the second flow through hole under the condition that the first flow through hole is opened.

Use the technical scheme of the utility model, a case subassembly is provided, include: the push rod is provided with an installation groove, and the installation groove is provided with a matching plane; the case, case include interconnect's installation section and shutoff section, and the installation section is located the mounting groove, and installation section and mounting groove are at least in the spacing cooperation of axial, and the surface that the installation section deviates from the one end of shutoff section is the cambered surface, cambered surface and cooperation plane butt. By adopting the scheme, the installation groove is arranged and is provided with the matching plane and can be abutted against the cambered surface arranged at the installation section, so that when the push rod pushes the valve core to move, the force of the push rod acting on any point of the cambered surface can point to the center of the cambered surface, the direction of the force is coaxial with that of the valve core, the valve core cannot radially deviate in the moving process, and the sealing effect is further ensured; and push rod and case in this scheme adopt the mode that the components of a whole that can function independently set up, have reduced the requirement to size precision to the processing degree of difficulty has been reduced.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a push rod and a valve core provided in a first embodiment of the present invention;

FIG. 2 is a schematic view of the construction of the putter of FIG. 1;

fig. 3 shows a cross-sectional view of a stop valve provided in a second embodiment of the present invention;

fig. 4 shows a partial enlarged view of the position a in fig. 3.

Wherein the figures include the following reference numerals:

10. a push rod; 11. mounting grooves; 111. a mating plane; 112. a transverse groove; 113. a vertical slot; 12. a connection section; 13. a mating segment;

20. a valve core; 21. an installation section; 211. a cambered surface; 212. a first pole segment; 213. a second pole segment; 22. a plugging section; 221. a third pole segment; 222. a fourth pole segment; 223. a fifth pole segment;

30. a valve seat; 31. an accommodating chamber; 311. a first bore section; 312. a second bore section; 313. a third bore section; 32. a first flow through hole;

40. a seal ring;

50. an annular gasket;

60. a baffle ring;

70. a second flow through hole.

Detailed Description

The technical solution 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. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a valve core assembly, including: the push rod 10, the push rod 10 has mounting grooves 11, the mounting grooves 11 have cooperating planes 111; valve core 20, valve core 20 include interconnect's installation section 21 and shutoff section 22, and installation section 21 is located mounting groove 11, and installation section 21 and mounting groove 11 are at least in the spacing cooperation of axial, and the surface that installation section 21 deviates from the one end of shutoff section 22 is cambered surface 211, cambered surface 211 and cooperation plane 111 butt.

By adopting the scheme, the installation groove 11 is arranged, the installation groove 11 is provided with the matching plane 111, and the installation groove 11 can be abutted with the cambered surface 211 arranged on the installation section 21, so that when the push rod 10 pushes the valve core 20 to move, the force of the push rod 10 acting on any point of the cambered surface 211 can point to the center of the cambered surface 211, the direction of the force is coaxial with that of the valve core 20, the valve core 20 cannot radially deviate in the moving process, and the sealing effect of the stop valve is further ensured; and push rod 10 and case 20 in this scheme adopt the mode that the components of a whole that can function independently set up, have reduced the requirement to dimensional accuracy to the processing degree of difficulty has been reduced.

The fitting plane 111 is perpendicular to the axis of the push rod 10, the arc surface 211 is a part of a spherical surface, and the center of the spherical surface is located on the axis of the valve core 20. The matching plane 111 is perpendicular to the axis of the push rod 10, and the spherical center of the spherical surface is located on the axis of the valve core 20, so that when the matching plane 111 abuts against the spherical surface, the force of the push rod 10 acting on any point of the spherical surface can point to the spherical center, the acting point is corrected to return to the spherical top, and finally the direction of the force is coaxial with the valve core 20, so that the valve core 20 is always on the axis of the valve core 20 in the moving process, radial offset cannot occur, and the sealing effect of the stop valve is ensured.

Specifically, the mounting section 21 comprises a first rod section 212 and a second rod section 213 which are connected with each other, the diameter of the first rod section 212 is larger than that of the second rod section 213, the first rod section 212 has an arc surface 211, and the second rod section 213 is connected with the blocking section 22; the mounting groove 11 is a T-shaped groove, the T-shaped groove comprises a transverse groove 112 and a vertical groove 113 which are mutually communicated, and the transverse groove 112 is provided with a matching plane 111; the first rod section 212 is located in the transverse groove 112, two ends of the first rod section 212 are respectively in limited fit with the inner wall of the transverse groove 112 in the axial direction, and the second rod section 213 is located in the vertical groove 113. Adopt above-mentioned mode of setting, set up first pole section 212 in transverse groove 112, second pole section 213 is located erects the groove 113, and the both ends of first pole section 212 respectively with the both sides of transverse groove 112 in the spacing cooperation of axial, because the diameter of first pole section 212 is greater than the diameter of second pole section 213, and the width of transverse groove 112 is greater than the width that erects groove 113, transverse groove 112 can play limiting displacement to first pole section 212 in the axial like this, thereby the range of movement of restriction first pole section 212, and this kind of connected mode, convenient to process and installation. Wherein, the end face of the plugging section 22 is matched with the end face stop of the push rod 10; the curved surface 211 is arranged at an end of the first rod section 212 close to the push rod 10.

In the present embodiment, the opening of the mounting groove 11 is located on the side wall of the push rod 10, and the opening of the mounting groove 11 is used for taking out or putting in the mounting section 21. The opening of the mounting groove 11 is provided at the side wall of the push rod 10 so that the valve core 20 can be easily mounted into the mounting section 21 through the opening when the valve core 20 is mounted.

As shown in fig. 3 and 4, a second embodiment of the present invention provides a stop valve, which includes a valve seat 30 and the above-mentioned valve core assembly, the valve seat 30 has a containing cavity 31 and a first flow through hole 32 communicating with the containing cavity 31, the valve core assembly is axially movably disposed in the containing cavity 31, and the blocking section 22 of the valve core assembly is used for opening or closing the first flow through hole 32.

By adopting the scheme, the installation groove 11 is arranged, the installation groove 11 is provided with the matching plane 111, and the installation groove 11 can be abutted with the cambered surface 211 arranged on the installation section 21, so that when the push rod 10 pushes the valve core 20 to move, the force of the push rod 10 acting on any point of the cambered surface 211 can point to the center of the cambered surface 211, the direction of the force is coaxial with that of the valve core 20, the valve core 20 cannot radially deviate in the moving process, and the sealing effect of the stop valve is further ensured; and push rod 10 and case 20 in this scheme adopt the mode that the components of a whole that can function independently set up, have reduced the processing degree of difficulty and have required to dimensional accuracy. The accommodating cavity 31 is arranged, so that the valve core assembly can move in the axial direction, and the first flow through hole 32 is opened or closed through the blocking section 22 of the valve core assembly, namely, the on-off function of the stop valve is realized.

Wherein, push rod 10 includes interconnect's linkage segment 12 and cooperation section 13, and the diameter of linkage segment 12 is greater than the diameter of cooperation section 13, and cooperation section 13 has mounting groove 11, the lateral wall of linkage segment 12 and the inner wall threaded connection who holds chamber 31. The outer side wall of the connecting section 12 is in threaded connection with the inner wall of the accommodating cavity 31, and the threaded connection mode is adopted, so that the connecting section is more stable and reliable.

Further, the accommodating cavity 31 comprises a first hole section 311, a second hole section 312 and a third hole section 313 which are communicated with each other, the first flow through hole 32 is communicated with the third hole section 313, the aperture of the first hole section 311 is larger than that of the second hole section 312, the aperture of the second hole section 312 is larger than that of the third hole section 313, the inner wall of the first hole section 311 is in threaded fit with the outer side wall of the connecting section 12, the matching section 13 is matched with the second hole section 312, and the blocking section 22 is matched with the third hole section 313. Through the above arrangement, the first hole section 311 is arranged to be capable of being in threaded fit with the outer side wall of the connecting section 12, so that the movement of the push rod 10 is realized.

In this embodiment, the blocking section 22 includes a third rod section 221, a fourth rod section 222 and a fifth rod section 223 which are connected in sequence, the third rod section 221 is connected with the installation section 21, the diameter of the fourth rod section 222 is larger than the diameters of the third rod section 221 and the fifth rod section 223, and the fifth rod section 223 is used for opening or closing the first flow through hole 32; the fourth rod section 222 has a sealing groove, and the valve core assembly further includes a sealing ring 40, the sealing ring 40 is disposed in the sealing groove, and the sealing ring 40 is in sealing fit with the inner wall of the accommodating cavity 31. A third pole segment 221 is provided, which can be connected to the mounting segment 21; a sealing groove is formed in the fourth rod section 222, and the sealing ring 40 is arranged in the sealing groove, so that the sealing effect of the stop valve can be improved through the sealing ring 40, and fluid leakage is avoided. Wherein, the sealing ring 40 is a hydrogen-resistant high-strength rubber ring, and has good wear resistance and long service life.

The valve core assembly further comprises an annular gasket 50 arranged in the sealing groove, the annular gasket 50 is located on one side of the sealing ring 40 facing the push rod 10, and the annular gasket 50 is abutted to the sealing ring 40. Set up annular gasket 50 in the one side of sealing washer 40 towards push rod 10, and annular gasket 50 and sealing washer 40 butt, at the in-process of work like this, can prevent that pressure is too big, and sealing washer 40 is extruded the seal groove, has guaranteed the stability and the reliability of sealing washer 40 at the during operation. Wherein, annular gasket 50 is the circular gasket of division chamfer, and structural strength is high.

Specifically, the stop valve further comprises a stop ring 60 arranged in the accommodating cavity 31, the stop ring 60 is connected with the inner wall of the accommodating cavity 31, and the stop ring 60 is matched with one end, far away from the valve core 20, of the push rod 10 in a stop way; the side wall of the valve seat 30 also has a second communication hole 70, and when the first communication hole 32 is opened, the first communication hole 32 and the second communication hole 70 communicate with each other. By arranging the baffle ring 60 and the baffle ring 60 is matched with one end, far away from the valve core 20, of the push rod 10 in a baffle way, when the push rod 10 moves, the push rod 10 can be limited, and the stability of the push rod during working is ensured; the second flow through hole 70 is provided in the side wall of the valve seat 30 such that the first flow through hole 32 and the second flow through hole 70 communicate with each other when the first flow through hole 32 is open; in the case where the first through-flow hole 32 is closed, the blocking section 22 blocks the second through-flow hole 70 and the first through-flow hole 32, and the first through-flow hole 32 and the second through-flow hole 70 are disconnected.

Specifically, an operation hole is formed in one end, away from the valve core 20, of the push rod 10, and a worker cooperates with the operation hole through an internal hexagonal wrench to drive the push rod 10 to move.

The scheme has the advantages that:

1. the push rod is provided with a mounting groove, and the push rod is connected with the valve core through the mounting groove, so that the push rod is convenient to process and mount.

2. One end of the valve core is provided with a spherical surface, the push rod is provided with a matching plane, and the connection mode of the matching plane and the spherical surface is adopted, so that the valve core is beneficial to self-centering, the radial offset of the valve core can not be caused, and the sealing is better ensured.

3. The push rod and the valve core adopt a split processing mode, so that the processing difficulty is reduced, and the influence on sealing is reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A valve cartridge assembly, comprising:

a push rod (10), the push rod (10) having a mounting groove (11), the mounting groove (11) having a mating plane (111);

the valve element (20), the valve element (20) includes an installation section (21) and a plugging section (22) which are connected with each other, the installation section (21) is located in the installation groove (11), the installation section (21) is in at least axial limit fit with the installation groove (11), the surface of one end, deviating from the plugging section (22), of the installation section (21) is an arc surface (211), and the arc surface (211) is abutted to the fit plane (111).

2. The spool assembly of claim 1, wherein the engagement plane (111) is perpendicular to the axis of the push rod (10), and the cambered surface (211) is part of a spherical surface, the spherical center of which is located on the axis of the spool (20).

3. The valve core assembly of claim 1, wherein the mounting section (21) comprises a first segment (212) and a second segment (213) connected to each other, the first segment (212) having a diameter greater than a diameter of the second segment (213), the first segment (212) having the arcuate surface (211), the second segment (213) being connected to the blocking section (22); the mounting groove (11) is a T-shaped groove, the T-shaped groove comprises a transverse groove (112) and a vertical groove (113) which are communicated with each other, and the transverse groove (112) is provided with the matching plane (111); the first rod section (212) is located in the transverse groove (112), two ends of the first rod section (212) are respectively in limit fit with the inner wall of the transverse groove (112) in the axial direction, and the second rod section (213) is located in the vertical groove (113).

4. The spool assembly of claim 1, characterized in that the opening of the mounting groove (11) is located in the side wall of the push rod (10), the opening of the mounting groove (11) being used for taking out or putting in the mounting section (21).

5. A shut-off valve, characterized in that it comprises a valve seat (30) and a valve core assembly according to any one of claims 1 to 4, the valve seat (30) having a receiving chamber (31) and a first flow through hole (32) communicating with the receiving chamber (31), the valve core assembly being axially movably arranged in the receiving chamber (31), a blocking section (22) of the valve core assembly being used to open or close the first flow through hole (32).

6. The shut-off valve according to claim 5, characterized in that the push rod (10) comprises a connecting section (12) and a mating section (13) which are connected to each other, the diameter of the connecting section (12) is larger than that of the mating section (13), the mating section (13) has the mounting groove (11), and the outer side wall of the connecting section (12) and the inner wall of the receiving cavity (31) are in threaded connection.

7. A shut-off valve according to claim 6, characterised in that the housing chamber (31) comprises a first bore section (311), a second bore section (312) and a third bore section (313) communicating with each other, the first flow opening (32) and the third bore section (313) communicating, the first bore section (311) having a larger bore diameter than the second bore section (312), the second bore section (312) having a larger bore diameter than the third bore section (313), the inner wall of the first bore section (311) and the outer side wall of the connecting section (12) being screw-engaged, the engaging section (13) and the second bore section (312) being engaged, the blocking section (22) and the third bore section (313) being engaged.

8. The shut-off valve according to claim 5, wherein the blocking section (22) comprises a third rod section (221), a fourth rod section (222) and a fifth rod section (223) which are connected in sequence, the third rod section (221) and the mounting section (21) are connected, the fourth rod section (222) has a diameter larger than the third rod section (221) and the fifth rod section (223), and the fifth rod section (223) is used for opening or closing the first flow through hole (32); the fourth rod section (222) is provided with a sealing groove, the valve core assembly further comprises a sealing ring (40), the sealing ring (40) is arranged in the sealing groove, and the sealing ring (40) is in sealing fit with the inner wall of the accommodating cavity (31).

9. The stop valve of claim 8, wherein the spool assembly further comprises an annular gasket (50) disposed in the seal groove, the annular gasket (50) being located on a side of the seal ring (40) facing the pushrod (10), the annular gasket (50) abutting the seal ring (40).

10. The stop valve according to claim 5, characterized in that the stop valve further comprises a stop ring (60) arranged in the accommodating cavity (31), the stop ring (60) is connected with the inner wall of the accommodating cavity (31), and the stop ring (60) is in stop fit with one end of the push rod (10) far away from the valve core (20); the side wall of the valve seat (30) is also provided with a second flow through hole (70), and when the first flow through hole (32) is opened, the first flow through hole (32) and the second flow through hole (70) are communicated.

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