CN2136236Y

CN2136236Y - Filling valve provided with flexible valve tube

Info

Publication number: CN2136236Y
Application number: CN 92231745
Authority: CN
Inventors: 刘海珠; 张志学
Original assignee: LANGFANG FORGING AND PRESSING MACHINE TOOL PLANT
Current assignee: LANGFANG FORGING AND PRESSING MACHINE TOOL PLANT
Priority date: 1992-09-03
Filing date: 1992-09-03
Publication date: 1993-06-16
Anticipated expiration: 2002-09-03

Abstract

The utility model relates to a filling valve provided with a flexible valve tube, which is used for liquid filling, particularly the normal atmosphere filling without containing gas-liquid and low vacuum filling, which belongs to the technical field of packing. When the filling is conducted by a filling valve using the prior art, the liquid needs flowing through an upper cavity of a valve seat to flow into a filling container through a valve tube. In order to prevent the leakage of the liquid which slides between the valve tube and the valve seat, the present adoptive contact seal mode and the gap seal mode have complicated art, poor reliability, high cost and high energy consumption. After the filling valve of the utility model is installed on a flexible valve tube, the liquid can not flow through the upper cavity of the valve seat when the liquid is filled; the sealing problem between the valve tube of the filling valve and the valve seat does not exist. The defects of the prior art of poor reliability, high energy consumption and high cost because of the taking measures for ensuring the sealing are avoided.

Description

Filling valve provided with flexible valve tube

The utility model relates to and is used for filling liquid, particularly the filling valve of can of air containing fluid normal pressure or low vacuum can not.

The filling valve of known normal pressure can or low vacuum can, when promoting valve pipe unlatching liquid outlet by mechanical force, liquid is through feed liquor bearing, valve seat epicoele, the valve pipe flows out from liquid outlet and pours into container, the bearing fit face of valve pipe and valve seat has two kinds of sealing means for preventing to leak, and a kind of is the contact seal of leaning on valve pipe and valve base chamber that sealing member is housed, because sealing member compresses and fits in sliding surface, friction drag is big, seal life is low, and it is big to open the needed mechanical force of valve, the energy consumption height; Another kind of sealing is the clearance seal that has enough little tolerance clearance by between the sliding surface that guarantees valve pipe and valve seat.This clearance seal requires fitting surface to have high dimensional accuracy, and the high accuracy of form and position and low roughness of surface make the processing technology complexity, the cost height.

The purpose of this utility model is that when this filling valve promoted valve pipe unlatching liquid outlet at mechanical force, valve pipe and valve base chamber did not need sealing in order to avoid a kind of filling valve of above-mentioned the deficiencies in the prior art part design-calculated.

To achieve these goals, the solution that the prior art that the utility model provides is different is, flexible valve pipe is housed in the valve seat of filling valve, and the liquid valve seat epicoele of not flowing through does not need sealing between valve pipe and the valve seat.

The utility model can also be realized by the bellows that increases by one section flexibility between existing valve pipe and feed liquor bearing.

Because the distance that valve pipe and valve seat move mutually when opening liquid outlet is very short, the amount of compression of flexible valve pipe can meet the demands, there are not the leak free problem in the valve pipe and the valve base chamber of filling valve, avoided in the prior art to guaranteeing that the measure that sealing is taked causes poor reliability, the energy consumption height, defect of high cost.

Accompanying drawing has been described an embodiment of the present utility model.

Valve seat in the accompanying drawing (3) is gone up feed liquor bearing (2) and tracheae (1) is installed, guiding grommet (6) radially is installed between sliding sleeve (9) and the valve seat (3), axial mounting spring (4), the elastic force of spring (4) is through sliding sleeve (9), axle-steel silk back-up ring (12), valve pipe (8), seal ring (14) and tracheae (13) act on the feed liquor bearing (2), sliding sleeve (9) lower end is fixed with pad (10) and packing seal (11), being the lining (7) that play the guiding role between valve pipe (8) and the valve seat (3), is bellows (5) resilient connection of ethylene propylene diene rubber by material between valve pipe (8) and the feed liquor bearing (2).

When being contacted with packing seal (11) by the vessel port of can, and to packing seal (11) when imposing mechanical force, sliding sleeve (9) rises, pad (10) promotes valve pipe (8) and rises, spring (4) and bellows (5) are compressed simultaneously, and valve pipe (8) lower end breaks away from seal ring (14), and liquid is through feed liquor bearing (2), bellows (5) and valve pipe (8) flow into container, and the air in the container is discharged by tracheae (13) and tracheae (1).When the liquid level in the container rose to the lower surface of tracheae (13), exhaust stopped, and can finishes.Subsequently, vessel port breaks away from packing seal (11), releasing imposes the mechanical force of packing seal (11), the elastic force of spring (4) promotes sliding sleeve (9), axle-steel silk back-up ring (12), valve pipe (8) returns to initial position, the liquid outlet sealing, bellows also restores to the original state, and filling valve is finished a working cycle.

Claims

1, a kind of filling valve that the flexible valve pipe is housed, valve seat (3) is gone up feed liquor bearing (2) and tracheae (1) is installed, guiding grommet (6) radially is installed between sliding sleeve (9) and the valve seat (3), axial mounting spring (4), sliding sleeve (9) lower end is fixed with pad (10) and packing seal (11), is the lining (7) that play the guiding role between valve pipe (8) and the valve seat (3); Feature of the present utility model is, the valve pipe of the flexibility that liquid and valve seat are separated is housed in the valve seat of filling valve.

2, filling valve according to claim 1 is characterized in that, flexible bellows (5) is housed between valve pipe (8) and feed liquor bearing (2).