CN2492548Y

CN2492548Y - Filling valve for piston-type filling machine

Info

Publication number: CN2492548Y
Application number: CN 01225143
Authority: CN
Inventors: 邹利生; 王东生; 夏宪富
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-04
Filing date: 2001-06-04
Publication date: 2002-05-22
Anticipated expiration: 2011-06-04

Abstract

A filling valve used on a piston filling machine comprises a valve, a discharge fluid tube, a valve core and so on. The end faces of the discharge fluid tube and the container port are sealed. A hollow valve core is arranged in the discharge fluid. The upper mouth of the valve core can communicate with atmosphere, and also can communicate with a negative-pressure generating device. The filling valve can avoid overflowing of the liquid out of the container, can absorb residue, can improve filling speed and improve packaging quality.

Description

A kind of filling valve that is used for the piston type bottle placer

The utility model relates to a kind of filling valve that is used for the piston type bottle placer, belongs to packing machinery technology.

The piston type bottle placer is a kind of common liquid-filling machine, its principle of work is: draw certain amount of fluid with piston (or plunger) pump from fluid reservoir, be injected in the container through filling valve then, its advantage is that the can amount is accurate, filling speed is very fast, be particularly useful for the bigger liquid of can viscosity, for example vegetable oil, liquid makeup etc.

Existing piston formula bottle placer model is a lot, and its filling valve all has only drain pipe, and does not have muffler.Be packing less between vessel port and the drain pipe during can, the interior space of original air between vessel port and drain pipe of container got back to the atmosphere during can.Its shortcoming is: because blowing-by between vessel port and the drain pipe, when liquid level is very fast near vessel port and filling speed, outside the easy overflow container of liquid, therefore have to reduce filling speed.On the other hand, when can finishes, when container moved, the residual small amount of liquid of the discharge opeing mouth of pipe may be dropped on the container outer surface, formed spot.

The purpose of this utility model is that a kind of later-model filling valve that is used for the piston type bottle placer will be provided, and it can overcome the above-mentioned shortcoming of existing filling valve, improves filling speed, improves packaging quality.

The purpose of this utility model is achieved in that it includes: valve body, drain pipe, spool etc., it is characterized in that: a drain pipe is arranged in valve body lower portion, a boss is arranged on the drain pipe outside face, can with the vessel port side seal, the spool that a hollow is arranged in drain pipe, spool top stretch out in outside the valve body and and body movable sealing, the spool bottom has a packing seal can seal the discharge opeing mouth of pipe, also has a retracing spring between spool top and the valve body upper surface, the discharge opeing mouth of pipe is opened, retracing spring makes on the spool and lifts when external force is cancelled, and the discharge opeing mouth of pipe is closed.Suitable for reading can the connection with atmosphere also of spool can be communicated with a depression generator.

Owing to seal between vessel port and the drain pipe, the spool that a hollow is arranged in the drain pipe, the interior original air of container can be got back to the atmosphere from valve core inside during can, when liquid level during near vessel port, even filling speed is very fast, liquid also can not overflow container outside, on the other hand, according to the requirement of packaging quality,, the suitable for reading of spool is communicated with and raffinate can be siphoned away with a depression generator as not allowing residual liquid when drippage.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is the structure cutaway view of an embodiment of the present utility model.

Among the figure: 1. valve body 2. drain pipes 3. spools 4. packing seals 5. packing seals 6. retracing springs 7. injecting type vacuum generators 8. seal rings 9. containers

Drain pipe (2) is arranged at valve body (1) bottom, a boss is arranged on the drain pipe outside face, by packing seal (4) and container (9) side seal, spool (3) is a hollow, spool top stretches out in outside the valve body and passes through seal ring (8) and body movable sealing, the spool bottom is by packing seal (4) and can sealing valve port, and a suitable for reading and injecting type vacuum generator (7) of spool is communicated with.When work (post) plug pump liquid (in the direction of arrows) when being pressed into filling valve, thereby spool is subjected to the downward pressure of liquid and moves downward the discharge opeing mouth of pipe and open (this moment spring (6) be compressed), in the liquid inlet container, (this moment, the injecting type vacuum generator was failure to actuate and the interior original air of container is got back to the atmosphere through injecting type vacuum generator (7) from valve core inside, promptly do not produce negative pressure), when can finishes, live (post) plug pump no longer when the filling valve hydraulic fluid, on the effect bottom spool of retracing spring (6), lift, the discharge opeing mouth of pipe is closed, injecting type vacuum generator this moment (controlled system directive) moves and the generation negative pressure, be sucked away when therefore, residual liquid arrives the spool end opening.

The injecting type vacuum generator can be for depression generator such as the various vacuum pumps etc. with other in the present embodiment.The residual liquid drippage is being required under the undemanding situation, and the suitable for reading of spool can directly be communicated with atmosphere.

In the present embodiment, spool moves downward and is subjected to the downward pressure of liquid and produces, also can for example cylinder, cam, plate machine etc. are depressed spool (these mechanisms all are bottle placer valve-opening mechanisms commonly used) with other mechanism.

Also can be communicated with between the suitable for reading and injecting type vacuum generator of spool with flexible pipe.

Claims

1. filling valve that is used for the piston type bottle placer, include: valve body, drain pipe, spool etc., it is characterized in that: a drain pipe is arranged in valve body lower portion, a boss is arranged on the drain pipe outside face, can with the vessel port side seal, the spool that a hollow is arranged in drain pipe, spool top stretch out in outside the valve body and and body movable sealing, the spool bottom has a packing seal can seal the discharge opeing mouth of pipe, also has a retracing spring between spool top and the valve body upper surface, the discharge opeing mouth of pipe is opened, and retracing spring makes on the spool and lifts when external force is cancelled, and the discharge opeing mouth of pipe is closed; Suitable for reading can the connection with atmosphere also of spool can be communicated with a depression generator.

2. the filling valve that is used for the piston type bottle placer according to claim 1 is characterized in that: described depression generator is the injecting type vacuum generator.