CN213655847U - Carbon dioxide filling valve - Google Patents

Abstract

A carbon dioxide filling valve belongs to the technical field of air conditioning system filling valves; through set up the seal groove on valve body left end face, set up auxiliary seal circle in the seal groove, when twisting dustproof nut into valve body left end, dustproof nut's inner wall can extrude auxiliary seal circle, and is realSealing the interior of the valve body by the presence of CO₂The air conditioning system fills the junction that fills valve seat hole and valve body right surface and sets up the chamfer, through set up O type sealing washer in the chamfer, O type sealing washer is at CO₂When air conditioning system fills and annotates the disk seat and is connected with the valve body, fill the gap between the two through the extrusion, realize the inside sealed of valve body, through set up high accuracy ball sealer in the direction taper hole, carrying out carbon dioxide and making the case remove right through pressing down high accuracy ball sealer, realize the inside and outside link up of valve body, fill and annotate the completion back, make the case remove left through reset spring's elasticity and reset, high accuracy ball sealer gets back to the direction taper hole again in addition, realizes the sealed of inside carbon dioxide.

Description

Carbon dioxide filling valve

Technical Field

The utility model belongs to the technical field of air conditioning system fills the fill valve, specifically relate to a carbon dioxide fills fill valve.

Background

With the increasing serious problems of air pollution and global warming, a novel CO2 air conditioning system with GWP of 1 and ODP of 0 is coming to the foreground under the double pressure drive of emission regulations and energy consumption.

This CO₂The working condition of the air conditioning system is more harsh than that of the ordinary R134a air conditioning system, the temperature is as high as 140-150 ℃ when the air conditioning system works, and the working pressure can reach 14-15 Mpa, so that the air conditioning system cannot be adapted to a filling valve which is one of the components on the original R134a air conditioning system.

Disclosure of Invention

The utility model discloses solve the technical problem that above-mentioned prior art exists, provide a carbon dioxide fills annotates fill valve.

The above technical problem of the present invention can be solved by the following technical solutions: the carbon dioxide filling valve comprises a valve body, wherein a dustproof nut is arranged on the left side of the valve body, and CO is connected to the right side of the valve body₂The air conditioning system fills and annotates the disk seat, be equipped with the valve body external screw thread on the outer lane face of valve body left end, be equipped with the seal groove on the valve body left end face, be equipped with auxiliary seal circle in the seal groove, the right-hand member of valve body is equipped with CO₂Air conditioning system fill valve seat orifice, said CO₂The joint of the filling valve seat hole of the air conditioning system and the right surface of the valve body is provided with a chamfer, an O-shaped sealing ring is arranged in the chamfer, and the large hole and CO are arranged₂Air conditioning system fill valve seat, the CO₂Two screw holes are arranged on the upper and lower sides of the filling valve seat hole of the air conditioning system, and the CO is₂The left end that air conditioning system filled and fills valve seat hole is equipped with case seat hole, be equipped with case seat hole screw thread on the case seat hole, the left end in case seat hole is equipped with the recess, the left end in recess is equipped with left case hole, the left end in left case hole is equipped with the direction taper hole, be equipped with the dense awl hole of high accuracy in the direction taper holeA sealing ball, wherein the left end of the guide taper hole is provided with a filling small hole which penetrates through the valve seat rightwards, and the guide taper hole, the left valve core hole, the valve core seat hole and CO₂The axial lead that air conditioning system filled the filling valve seat hole all is on same straight line, the downthehole valve core case that is equipped with of left side valve core hole and valve core case, the valve core case includes A portion and B portion, A position is located the left end of B portion, be equipped with the valve core case external screw thread on the outer lane of B portion, it is downthehole that left case is located to A portion, and it is downthehole that the valve core case is located to B portion, valve core case external screw thread and the meshing of valve core seat hole screw thread, the upper and lower both ends of B portion are equipped with two air vents, the cover is equipped with reset spring in the A portion of valve core case, the left side of valve core case is equipped with the case, the axle center position of case right-hand member is equipped with the reset.

The utility model discloses beneficial effect who has: through set up the seal groove on valve body left end face, set up auxiliary seal circle in the seal groove, when twisting dustproof nut into valve body left end, dustproof nut's inner wall can extrude auxiliary seal circle, realizes the inside sealed of valve body, through at CO₂The air conditioning system fills the junction that fills valve seat hole and valve body right surface and sets up the chamfer, through set up O type sealing washer in the chamfer, O type sealing washer is at CO₂When air conditioning system fills and annotates the disk seat and is connected with the valve body, fill the gap between the two through the extrusion, realize the inside sealed of valve body, through set up high accuracy ball sealer in the direction taper hole, carrying out carbon dioxide and making the case remove right through pressing down high accuracy ball sealer, realize the inside and outside link up of valve body, fill when carbon dioxide and annotate and accomplish the back, the elasticity through reset spring makes the case that removes right remove and remove left and reset, in addition high accuracy ball sealer gets back to the direction taper hole again, realize the sealed of inside carbon dioxide.

Drawings

FIG. 1 is a schematic view of a half-section structure of the present invention;

FIG. 2 is a schematic view of a half-section structure of the valve body of the present invention;

FIG. 3 is a schematic view of a full-section structure of the valve cartridge of the present invention;

FIG. 4 is a schematic view of a full-section structure of the valve core seat of the present invention

In the figure: 1. a valve body; 2. a dust-proof nut; 3. CO2₂An air conditioning system charge valve seat; 4. a valve body external thread; 5. a sealing groove; 6. an auxiliary seal ring; 7. CO2₂The air conditioning system fills the valve seat orifice; 8. chamfering; 9. an O-shaped sealing ring; 10. a screw hole; 11. A valve core seat bore; 12. valve core seat hole threads; 13. a clearance groove; 14. a left spool bore; 15. a guiding taper hole; 16. a high-precision sealing ball; 17. filling the small hole; 18. a valve core seat; 19. a part A; 20. a section B; 21. a valve core seat external thread; 22. two vent holes; 23. a return spring; 24. a valve core; 25. a return spring aperture; 26. and a gas guide groove.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): a carbon dioxide filling valve is shown in figures 1-4 and comprises a valve body, wherein a dustproof nut is arranged on the left side of the valve body, and CO is connected to the right side of the valve body₂The air conditioning system fills and annotates the disk seat, be equipped with the valve body external screw thread on the outer lane face of valve body left end, be equipped with the seal groove on the valve body left end face, be equipped with auxiliary seal circle in the seal groove, the right-hand member of valve body is equipped with CO₂Air conditioning system fill valve seat orifice, said CO₂The joint of the filling valve seat hole of the air conditioning system and the right surface of the valve body is provided with a chamfer, an O-shaped sealing ring is arranged in the chamfer, and the large hole and CO are arranged₂Air conditioning system fill valve seat, the CO₂Two screw holes are arranged on the upper and lower sides of the filling valve seat hole of the air conditioning system, and the CO is₂The left end that air conditioning system filled and fills disk seat hole is equipped with case seat hole, be equipped with case seat hole screw thread on the case seat hole, the left end in case seat hole is equipped with the recess, the left end in recess is equipped with left case hole, the left end in left side case hole is equipped with the direction taper hole, be equipped with high accuracy ball sealer in the direction taper hole, the left end in direction taper hole is equipped with fills and fills the notes aperture, it runs through the disk seat to fill the aperture right, direction taper hole, left case hole, case seat hole and CO₂Air conditioning systemFill the axial lead that fills the disk seat hole all on same straight line, the downthehole valve core case that is equipped with of left side valve core hole and valve core case, the valve core case includes A portion and B portion, A position is located the left end of B portion, be equipped with the valve core case external screw thread on the outer lane of B portion, it is downthehole that left case is located to A portion, and it is downthehole that the valve core case is located to B portion, the valve core case external screw thread meshes with valve core case seat hole screw thread mutually, the upper and lower both ends of B portion are equipped with two air vents, the cover is equipped with reset spring in the A portion of valve core case, the left side of valve core case is equipped with the case, the axle center position of case right-hand member is equipped with the reset spring.

The principle of the utility model is as follows: it is filled with CO₂The process is as follows, at first take off dustproof nut, the external screw thread on the valve body of recycling makes to fill and annotate that has sealing function on the ware and annotates the tubule and advance, in the filling aperture that gets into on the valve body through the valve body leftmost end direction aperture, make to fill in tubule top and push up on the ball sealer and make the ball sealer break away from the contact with the taper hole rather than matching and appear the clearance, reset spring in the case hole presents compression state, reopen the evacuation function, accord with the vacuum degree requirement and then switch over promptly and fill and annotate CO and appear the clearance₂State, CO₂The air-conditioning system can reach the filling valve seat of the air-conditioning system through the clearance between the sealing ball and the taper hole, the vent groove on the outer surface of the valve core and the small hole on the valve core seat. The device can be withdrawn after the filling meets the requirement, and the reset spring is reset and bounced synchronously. When the sealing ball contacts with the guide taper hole to generate sealing action, the filling small pipe is continuously withdrawn until the filling small pipe is completely separated from the valve body. And screwing the dustproof nut to enable the inner end face of the dustproof nut to compress the auxiliary sealing ring. The complete filling process is now complete.

Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above-described embodiments, and many modifications are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered as belonging to the protection scope of the present invention.

Claims (1)

1. The carbon dioxide filling valve comprises a valve body and is characterized in that a dustproof nut is arranged on the left side of the valve body, and CO is connected to the right side of the valve body₂The air conditioning system fills and annotates the disk seat, be equipped with the valve body external screw thread on the outer lane face of valve body left end, be equipped with the seal groove on the valve body left end face, be equipped with auxiliary seal circle in the seal groove, the right-hand member of valve body is equipped with CO₂Air conditioning system fill valve seat orifice, said CO₂Air conditioning system fills and fills that the junction that fills valve seat hole and valve body right surface is equipped with the chamfer, be equipped with O type sealing washer in the chamfer, CO2 air conditioning system fills and fills valve seat hole and CO₂Air conditioning system fill valve seat, the CO₂Two screw holes are arranged on the upper and lower sides of the filling valve seat hole of the air conditioning system, and the CO is₂The left end that air conditioning system filled and fills disk seat hole is equipped with case seat hole, be equipped with case seat hole screw thread on the case seat hole, the left end in case seat hole is equipped with the recess, the left end in recess is equipped with left case hole, the left end in left side case hole is equipped with the direction taper hole, be equipped with high accuracy ball sealer in the direction taper hole, the left end in direction taper hole is equipped with fills and fills the notes aperture, it runs through the disk seat to fill the aperture right, direction taper hole, left case hole, case seat hole and CO₂The axial lead that air conditioning system filled the filling valve seat hole all is on same straight line, the downthehole valve core case that is equipped with of left side valve core hole and valve core case, the valve core case includes A portion and B portion, A position is located the left end of B portion, be equipped with the valve core case external screw thread on the outer lane of B portion, it is downthehole that left case is located to A portion, and it is downthehole that the valve core case is located to B portion, valve core case external screw thread and the meshing of valve core seat hole screw thread, the upper and lower both ends of B portion are equipped with two air vents, the cover is equipped with reset spring in the A portion of valve core case, the left side of valve core case is equipped with the case, the axle center position of case right-hand member is equipped with the reset.

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