Beer spear with a pressure relief valve
AssigneeNingbo Major Draft Beer Equipment Co., Ltd
InventorsXiaoyang Ye, Bangcai Luo
Life of this patent
Estimating the term…
Abstract
The present invention discloses a beer spear with a pressure relief valve, which comprises a beer spear seat, a pressure relief valve, an inner tube fixing sleeve, an inner tube fixing spring and an inner tube assembly; the pressure relief valve is arranged on the outer side of the beer spear seat and the pressure inlet of the pressure relief valve communicates with a gas storage chamber; a head movable hole matching the head of a dispenser is opened at the top of the beer spear seat. The present invention is more convenient to assemble and disassemble a draft beer keg, and also the space for the draft beer keg is saved and the problems such as gas leakage and draft beer spoiling caused by damages of the gas tube are avoided.
Claims9
A beer spear with a pressure relief valve, wherein said beer spear with a pressure relief valve comprises a beer spear seat, a pressure relief valve, an inner tube fixing sleeve, an inner tube fixing spring and an inner tube assembly, wherein the pressure relief valve is arranged on the outer side of the beer spear seat, a pressure inlet of the pressure relief valve communicates with a gas storage chamber, a head movable hole matching a head of a dispenser is opened at the top of the beer spear seat, a valve device linking with and matching the head is provided on the side of the head movable hole, and the valve device communicates with a pressure stabilizing outlet of the pressure relief valve and the head movable hole, respectively;
- wherein said pressure relief valve comprises a valve body housing, a first compression spring, a mushroom-shaped ejector rod, a second compression spring and a pressure block, wherein said first compression spring, ejector rod, second compression spring and pressure block are coaxially distributed in turn from left to right in the valve body housing, and the ejector rod comprises a retractable rod and a mushroom head which are coaxially connected;
- said valve body housing comprises a front housing and a rear housing;
- a first counterbore is opened at a front end of said front housing and the diameter of a smaller hole of said first counterbore matches the outside diameter of the retractable rod;
- a mushroom head coupling hole, a pressure block coupling hole and a pressure hole coaxially communicating with each other are opened in turn from front to back in the rear housing, the diameter of said mushroom head coupling hole matches the outside diameter of the mushroom head, the diameter of said pressure block coupling hole matches the outside diameter of the pressure block, and the diameter of said pressure hole is smaller than that of the pressure block coupling hole;
- a first threaded section coaxial with the first counterbore is provided on the outer side of the rear end of the front housing, and a first threaded hole matching the first threaded section is provided at the front end of the mushroom head coupling hole;
- said front housing and rear housing are fixedly connected through a matched thread connection between the first thread section and the first threaded hole;
- the mushroom head of said ejector rod is inserted into the mushroom head coupling hole and the retractable rod of the ejector rod is inserted into the smaller hole of the first counterbore;
- said first compression spring is slid onto the retractable rod and arranged between the rear end face of the front housing and the bottom of the mushroom head;
- said pressure block is inserted into the pressure block coupling hole;
- said second compression spring is provided between the top of the mushroom head and the pressure block;
- the pressure inlet of the pressure relief valve is an open end of a larger hole of the first counterbore axially covered by the top end of the retractable rod, and the pressure stabilizing outlet of the pressure relief valve is the open end of the larger hole of the first counterbore not axially covered by the top end of the retractable rod.
A beer spear with a pressure relief valve, wherein said beer spear with a pressure relief valve comprises a beer spear seat, a pressure relief valve, an inner tube fixing sleeve, an inner tube fixing spring and an inner tube assembly, wherein the pressure relief valve is arranged on the outer side of the beer spear seat, a pressure inlet of the pressure relief valve communicates with a gas storage chamber, a head movable hole matching a head of a dispenser is opened at the top of the beer spear seat, a valve device linking with and matching the head is provided on the side of the head movable hole, and the valve device communicates with a pressure stabilizing outlet of the pressure relief valve and the head movable hole, respectively;
- wherein said valve device comprises a screw, an ejector block return spring, an ejector block and an ejector rod;
- a threaded hole matching the screw is opened on the outer side of the top of said beer spear seat, a gas hole communicating with the head movable hole is provided at the end of said threaded hole, and said ejector rod is inserted into said gas hole;
- the end of the ejector rod is connected with the ejector block;
- a coupling hole matching the ejector block is provided at the end of the screw, and said ejector block return spring is arranged between the ejector block and the coupling hole;
- a fourth O-ring matching the threaded hole is provided on the outer side of the screw;
- the pressure stabilizing outlet of said pressure relief valve communicates with the threaded hole.
A beer spear with a pressure relief valve, wherein said beer spear with a pressure relief valve comprises a beer spear seat, a pressure relief valve, an inner tube fixing sleeve, an inner tube fixing spring and an inner tube assembly, wherein the pressure relief valve is arranged on the outer side of the beer spear seat, a pressure inlet of the pressure relief valve communicates with a gas storage chamber, a head movable hole matching a head of a dispenser is opened at the top of the beer spear seat, a valve device linking with and matching the head is provided on the side of the head movable hole, and the valve device communicates with a pressure stabilizing outlet of the pressure relief valve and the head movable hole, respectively;
- wherein a second counterbore communicating with the head movable hole is opened at the bottom of said beer spear seat, and the inner wall of the larger hole of said second counterbore is fixedly connected, through a thread, with the outer wall of the inner tube fixing sleeve;
- said inner tube assembly comprises an inner tube, an intake seal ring, a stopend and a stopend return spring;
- said intake seal ring is arranged at the top of the inner tube;
- a plurality of inner bosses uniformly distributed in a circle array around the axis are arranged in the middle section of the inner tube;
- said stopend return spring is arranged between the inner bosses and the stopend, and the stopend presses upward against the inner ring of the intake seal ring to seal the inner tube under the acting force of the stopend return spring;
- a third counterbore communicating with the bottom surface is arranged at the top of the inner tube fixing sleeve, and the smaller hole of said third counterbore is in clearance fit with the inner tube;
- a step surface protruding outward is provided on the outer side near the top of the inner tube, and said inner tube fixing spring is arranged between the bottom surface of the larger hole of the third counterbore and the step surface and is joined with the inner tube;
- an annular projection is provided where the second counterbore communicates with the head movable hole;
- the outer ring of the intake seal ring presses upward against the annular projection to seal the inner tube under the elastic force of the inner tube fixing spring.
Dependencies are inferred from the claim text.