초록 ▼

The diaphragm valve uses a metal dish-type diaphragm set to control the inflow and outflow of fluid. The metal dish-type diaphragm set is above an air flow channel to control the stem above the metal dish-type diaphragm set, and the air will be blocked by pressing the metal dish-type diaphragm to ma

The diaphragm valve uses a metal dish-type diaphragm set to control the inflow and outflow of fluid. The metal dish-type diaphragm set is above an air flow channel to control the stem above the metal dish-type diaphragm set, and the air will be blocked by pressing the metal dish-type diaphragm to make it fit the metal valve base in the air flow channel; this non-metal valve base is fixed in the air flow channel by a fixed shrunk ring with a taper cross section, and the in-between metal diaphragm in the metal dish-type diaphragm set is annular in the center to reduce the metallic friction between metal diaphragms, to increase application times and to lower the leakage rate of the diaphragm valve.

대표청구항 ▼

1. A diaphragm valve for controlling inflow and outflow of fluid, comprising:a valve body with a chamber inside, a first flow channel and a second flow channel for connecting the chamber with the outside; a non-metal valve base, of ring type and installed in the first flow channel near the chamber,

1. A diaphragm valve for controlling inflow and outflow of fluid, comprising:a valve body with a chamber inside, a first flow channel and a second flow channel for connecting the chamber with the outside; a non-metal valve base, of ring type and installed in the first flow channel near the chamber, and being a little higher than an internal surface of the valve body; a fixed shrunk ring, installed in the non-metal valve base to fix the non-metal valve base to the first flow channel; a metal dish-type diaphragm set, which is installed in the chamber of the valve body above the first flow channel, and which cooperates with the non-metal valve base to block fluid between the first flow channel and the chamber, the metal dish-type diaphragm set including at least three diaphragms with an in-between diaphragm being a ring type and whose intension is less than that of the diaphragms on both sides thereof; and a stem, installed in the valve body near a side of the metal dish-type diaphragm set, and driving the metal dish-type diaphragm set to engage the non-metal valve base in order to block the circulation of fluid between the first flow channel and the chamber, and to release the metal dish-type diaphragm set to allow the fluid to enter the second flow channel via the first flow channel and the chamber. 2. The diaphragm valve of claim 1, wherein the non-metal valve base is made of deformable material for engaging with the metal dish-type diaphragm set.3. The diaphragm valve of claim 1, wherein the non-metal valve base is made of a high molecular material.4. The diaphragm valve of claim 1, wherein the fixed shrunk ring is tapered and is surrounded by a plurality of flanges to fit the non-metal valve base with the fixed shrunk ring.5. The diaphragm valve of claim 1, wherein the metal dish-type diaphragm set is made of a springy metal.6. The diaphragm valve of claim 1, wherein the in-between diaphragm of the metal dish-type diaphragm set is made of an annealed bronze.7. A diaphragm valve for controlling inflow and outflow of fluid, comprising:a valve body with a chamber inside, a first flow channel and a second flow channel for connecting the chamber with the outside; a non-metal valve base, of ring type and installed in the first flow channel near the chamber, and being a little higher than an internal surface of the valve body; a fixed shrunk ring, installed in the non-metal valve base to fix the non-metal valve base to the first flow channel; a metal dish-type diaphragm set, which is installed in the chamber of the valve body above the first flow channel, and which cooperates with the non-metal valve base to block fluid between the first flow channel and the chamber; and a stem, installed in the valve body near a side of the metal dish-type diaphragm set, and driving the metal dish-type diaphragm set to engage the non-metal valve base in order to block the circulation of fluid between the first flow channel and the chamber, and to release the metal dish-type diaphragm set to allow the fluid to enter the second flow channel via the first flow channel and the chamber; wherein the non-metal valve base is made of a high molecular material; and wherein the high molecular material is polychlorotrifluoroethylene. 8. A diaphragm valve for controlling inflow and outflow of fluid, comprising:a valve body with a chamber inside, a first flow channel and a second flow channel for connecting the chamber with the outside; a non-metal valve base, being a ring-type body with a ring-type groove, being installed in the first flow channel near the chamber, and being a little higher than a internal surface of the valve body; a fixed shrunk ring, installed in the non-metal valve base to fix the non-metal valve base to the first flow channel; a metal dish-type diaphragm set, which is installed in the chamber of the valve body above the first flow channel, and which cooperates with the non-metal valve base to block the inflow and outflow of fluid between the first flow channel and the chamber, the metal dish-type diaphragm set including at least three diaphragms with an in-between diaphragm being a ring type and whose intension is less than that of the diaphragms on both sides thereof; and a stem, installed in the valve body near a side of the metal dish-type diaphragm set, and driving the metal dish-type diaphragm set to engage the non-metal valve base in order to block the circulation of fluid between the first flow channel and the chamber, and to release the metal dish-type diaphragm set to allow the fluid to enter the second flow channel via the first flow channel and the chamber. 9. The diaphragm valve of claim 8, wherein the non-metal valve base is made of a deformable material for engaging with the metal dish-type diaphragm set.10. The diaphragm valve of claim 8, wherein the material of the non-metal valve base is a high molecular material.11. The diaphragm valve of claim 10, wherein the high molecular material is polychlorotrifluoroethylene.12. The diaphragm valve of claim 8, wherein the fixed shrunk ring is tapered, and is surrounded by a plurality of flanges to fit the non-metal valve base with the fixed shrunk ring.13. The diaphragm valve of claim 8, wherein the metal dish-type diaphragm set is made of a springy metal.14. The diaphragm valve of claim 8, wherein the in-between diaphragm of the metal dish-type diaphragm set is made of an annealed bronze.