CN211847099U

CN211847099U - Filling device

Info

Publication number: CN211847099U
Application number: CN201922335320.3U
Authority: CN
Inventors: 沈军; 高擎宇; 杨帆
Original assignee: Jiangsu Newamstar Packagin Machinery Co Ltd
Current assignee: Jiangsu Newamstar Packagin Machinery Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-11-03
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a filling device, which is used for filling beverage into PET bottles and comprises an oxygen-expelling mechanism and a filling mechanism, wherein the PET bottles are sequentially conveyed to pass through the oxygen-expelling mechanism and the filling mechanism; the oxygen driving mechanism comprises a conveyor for inputting a liquid or solid first medium into the PET bottle, and the first medium is used for falling into the bottom of the PET bottle and gasifying into gas so as to drive air in the PET bottle upwards; the filling mechanism comprises an isobaric valve used for communicating the liquid storage tank with the PET bottle, and a first cavity communicated with the PET bottle is arranged at the bottom of the isobaric valve; the filling mechanism further comprises a micro negative pressure cavity communicated with the first cavity through a negative pressure switch valve and an exhaust switch valve communicated with the first cavity. The utility model relates to a filling device can the air in the PET bottle be driven to the efficient, the effectual PET bottle beverage filling in-process that has reduced, the harm that oxygen brought the beverage quality.

Description

Filling device

Technical Field

The utility model relates to a filling technical field, in particular to filling device.

Background

In the process of filling beer in the PET bottle, because of the material of the PET bottle, the vacuum-pumping treatment cannot be carried out like a glass bottle so as to reduce the contact between the beer and oxygen in the air. Because the PET bottle is generally narrow at the top and wide at the bottom, the bottle neck is particularly narrow, and the air in the bottle can not be exhausted by filling carbon dioxide gas into the pop can, so that the contact between beer and oxygen in the air is reduced.

Therefore, in the process of filling beer in PET bottles, the PET bottles contain more air which is difficult to process, and oxygen in the PET bottles can bring great damage to the quality of the beer.

Disclosure of Invention

The utility model aims at providing a filling device can drive the air in the PET bottle by the efficient before the filling, the effectual PET bottle beverage filling in-process that has reduced, the harm that oxygen brought the beverage quality.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a filling device is used for filling beverage into PET bottles, and comprises an oxygen-purging mechanism and a filling mechanism which are sequentially conveyed to pass through the PET bottles;

the oxygen driving mechanism comprises a conveyor for inputting a liquid or solid first medium into the PET bottle, and the first medium is used for falling to the bottom of the PET bottle and gasifying into gas so as to drive air in the PET bottle upwards;

the filling mechanism comprises an isobaric valve used for communicating a liquid storage tank with the PET bottle, and a first cavity communicated with the PET bottle is arranged at the bottom of the isobaric valve; the filling mechanism further comprises a micro negative pressure cavity communicated with the first cavity through a negative pressure switch valve, and an exhaust switch valve communicated with the first cavity.

Preferably, the first medium is liquid nitrogen or dry ice.

Preferably, the constant pressure valve comprises a valve body with a valve cavity communicated with the liquid storage tank, a hollow liquid valve rod penetrating through the valve body, and a pressure spring, wherein the lower end of the pressure spring is fixedly arranged on the valve body, and the upper end of the pressure spring is fixedly arranged at the upper end of the hollow liquid valve rod;

the constant pressure valve also comprises an air valve rod arranged in the upper part of the liquid valve rod in a penetrating way, a driver used for driving the air valve rod to ascend so that the back pressure air enters the PET bottle through the hollow liquid valve rod, and a blocking piece arranged on the outer side of the lower end of the hollow liquid valve rod and used for blocking liquid from flowing out downwards;

the pressure spring is used for jacking the hollow liquid valve rod upwards after the back pressure gas enters the PET bottle, so that liquid can flow downwards into the PET bottle through a gap between the blocking piece and the inner surface of the valve body.

More preferably, the valve cavity comprises the first cavity, which is located between the barrier and the PET bottle.

More preferably, the upper end of the valve body penetrates through the liquid storage tank, the lower end of the valve body penetrates out of the liquid storage tank, and the blocking piece is located below the liquid storage tank.

More preferably, the valve body is provided with a liquid inlet for introducing liquid in the liquid storage tank into the valve cavity.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model relates to a filling device, before filling, first, a first medium is input into a PET bottle, so that the first medium is gasified into gas in the PET bottle to drive the air in the PET bottle; then communicating the micro negative pressure cavity with the PET bottle to pump out gas in the PET bottle; the filling device and the method can efficiently drive air in the PET bottle, and effectively reduce the damage of oxygen to the quality of the beverage in the filling process of the PET bottle beverage.

Drawings

FIG. 1 is a schematic structural view of a filling mechanism;

FIG. 2 is a schematic diagram of the principle of dropping liquid nitrogen to drive air;

FIG. 3 is a schematic view of the structure of the conveyor mounted on the bottle feeding thumb wheel.

Wherein: 1. a bottle feeding dial wheel; 2. a filling wheel; 3. a bottle discharging poking wheel; 4. an oxygen driving mechanism; 41. a first medium; 42. a conveyor; 5. PET bottles; 6. a liquid storage tank; 7. a first chamber; 8. a negative pressure switching valve; 9. a micro negative pressure cavity; 10. an exhaust switch valve; 11. a valve cavity; 12. a valve body; 13. a hollow liquid valve stem; 14. a pressure spring; 15. back pressure gas; 16. an air valve stem; 17. a driver; 18. a blocking member; 19. and (4) a liquid inlet.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 to 3, a filling device of the above type is used for filling a PET bottle 5 with a beverage, which in this embodiment is used for filling beer. The filling device comprises an oxygen driving mechanism 4 and a filling mechanism, wherein PET bottles 5 are sequentially conveyed to pass through. Referring to fig. 3, PET bottles 5 are sequentially conveyed through a bottle feeding dial wheel 1, a filling wheel 2, and a bottle discharging dial wheel 3. Wherein, the oxygen driving mechanism 4 is arranged on the bottle feeding thumb wheel 1, and the filling mechanism is arranged on the filling wheel 2.

The above-mentioned oxygen-purging mechanism 4 includes a conveyor 42 for feeding a first medium 41 in a liquid or solid state into the PET bottle 5, and the first medium 41 is adapted to fall into the bottom of the PET bottle 5 and be vaporized into a gas to purge the air in the PET bottle 5 upward. The first medium 41 is liquid nitrogen or dry ice. Because the liquid nitrogen or the dry ice can be rapidly gasified at normal temperature and normal pressure to generate a large amount of gas, after the liquid nitrogen and the dry ice fall to the bottom of the PET bottle 5, the gas generated by gasification is diffused upwards (namely at the bottle mouth) to drive the air out of the PET bottle 5.

In the present embodiment, the feeder 42 is a nitrogen dropping device for dropping liquid nitrogen into the bottle mouth. This nitrogen dropping device is located the bottleneck directly over, and the liquid nitrogen that drips falls to 5 bottoms of PET bottle under the effect of gravity, and the liquid nitrogen absorbs heat gasification and becomes nitrogen gas in the bottle, and nitrogen gas is less than peripheral air because of the temperature, spreads to the bottleneck from the bottle bottom, drives out the bottleneck to the air.

The filling mechanism comprises an isobaric valve for communicating the liquid storage tank 6 with the PET bottle 5, and a first cavity 7 communicated with the PET bottle 5 is arranged at the bottom of the isobaric valve; the filling mechanism further comprises a micro negative pressure cavity 9 communicated with the first cavity 7 through a negative pressure switch valve 8, and an exhaust switch valve 10 communicated with the first cavity 7. The micro negative pressure cavity 9 is communicated with the first cavity 7 by opening the negative pressure switch valve 8, so that the gas in the PET bottle 5 can be pumped out, and the pumped gas is discharged outwards by opening the exhaust switch valve 10.

Through two steps of operation around, can the efficient drive the air in PET bottle 5, the effectual 5 beverage filling in-process that have reduced PET bottle, the harm that oxygen brought the beverage quality. And also does not cause damage to the PET bottle 5.

The constant pressure valve comprises a valve body 12 with a valve cavity 11 communicated with the liquid storage tank 6 and a hollow liquid valve rod 13 arranged in the valve body 12 in a penetrating way. In this embodiment, the upper end of the valve body 12 penetrates through the fluid reservoir 6, the lower end of the valve body 12 penetrates through the fluid reservoir 6, and the valve body 12 is provided with a fluid inlet 19 for introducing the fluid in the fluid reservoir 6 into the valve cavity 11. Wherein, the upper end of the hollow liquid valve rod 13 penetrates out of the valve body 12, the upper end and the lower end of the hollow liquid valve rod 13 are respectively communicated with the backpressure gas 15 of the liquid storage tank 6 and the PET bottle 5, namely, the top end of the hollow liquid valve rod 13 is higher than the liquid level of the liquid in the liquid storage tank 6.

The isobaric valve further comprises a pressure spring 14, the lower end of the pressure spring is fixedly arranged on the valve body 12, the upper end of the pressure spring is fixedly arranged at the upper end of the hollow liquid valve rod 13, an air valve rod 16 penetrates through the upper portion of the liquid valve rod, a driver 17 used for driving the air valve rod 16 to ascend so that back pressure air 15 enters the PET bottle 5 through the hollow liquid valve rod 13, and a blocking piece 18 arranged on the outer side of the lower end of the hollow liquid valve rod 13 and used for blocking liquid from flowing downwards. The lower end of the air valve rod 16 is used for blocking the central through hole of the hollow liquid valve rod 13 so as to block the back pressure air 15 from entering the PET bottle 5.

The baffle 18 is arranged in the valve cavity 11 and used for generating a gap between the baffle and the inner surface of the valve body 12 when ascending, so that liquid can flow downwards into the PET bottle 5 through the gap; and also acts to interfere circumferentially with itself against the inner surface of the valve body 12 when lowered to block the flow of liquid down into the PET bottle 5. The valve chamber 11 comprises a first chamber 7, the first chamber 7 being located below the barrier member 18 and between the PET bottle 5. Since the liquid is present in the valve chamber 11 above the barrier member 18 before filling, by placing the first chamber 7 below the barrier member 18, the liquid can be prevented from being drawn out when the PET bottle 5 is evacuated through the slight negative pressure chamber 9. In this embodiment, the stop member 18 is positioned below the fluid reservoir 6.

The compression spring 14 is used to jack the hollow liquid valve stem 13 upward after the back pressure gas 15 enters the PET bottle 5, so that the liquid can flow downward into the PET bottle 5 through the gap between the blocking member 18 and the inner surface of the valve body 12. After gas is pumped out of the PET bottle 5 through the micro negative pressure cavity 9, the hydraulic pressure above the blocking piece 18 is greater than the air pressure below the blocking piece 18, and the blocking piece 18 is pressed downwards in the valve cavity 11; after the backpressure gas 15 above the liquid enters the PET bottle 5, an isobaric relation is established, the lower end of a pressure spring 14 is fixed on a valve body 12, the upper end of the pressure spring 14 bounces upwards to drive a hollow liquid valve rod 13 to move upwards, and accordingly a blocking piece 18 is driven to move upwards.

The following specifically explains the working process of this embodiment:

(1) feeding a liquid or solid first medium 41 into the PET bottle 5, and allowing the first medium 41 to fall to the bottom of the PET bottle 5, wherein the first medium 41 is used for gasifying gas in the PET bottle 5 to expel air in the PET bottle 5 upwards;

the first medium 41 is liquid nitrogen or dry ice which can be gasified into gas at normal temperature and normal pressure, in the embodiment, the first medium 41 is liquid nitrogen, the dripped liquid nitrogen falls to the bottom of the PET bottle 5 under the action of gravity, the liquid nitrogen absorbs heat in the bottle and is gasified into nitrogen, and the nitrogen diffuses from the bottom of the bottle to the bottle mouth because the temperature is lower than that of peripheral air and drives the air out of the bottle mouth;

(2) communicating the micro negative pressure cavity 9 with the PET bottle 5 to pump out gas in the PET bottle 5; the air pressure of the micro negative pressure cavity 9 is between 0.1 and 0.3 kilogram, in the embodiment, the air pressure of the micro negative pressure cavity 9 is 0.2 kilogram, so that the PET bottle 5 is not deformed or is deformed in the range of elastic recovery in the air suction process;

(3) back pressure gas 15 of the liquid in the liquid storage tank 6 is introduced into the PET bottle 5 through an isobaric valve, and the liquid is filled into the PET bottle 5 after isobaric pressure is established. In this embodiment, the liquid in the liquid storage tank 6 is beer, and the back pressure gas 15 above the beer is carbon dioxide.

The step (1) can be carried out for multiple times, and the specific times are set according to actual needs.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A filling device is used for filling beverage into PET bottles, and is characterized in that: the device comprises an oxygen-expelling mechanism and a filling mechanism, wherein the PET bottles are sequentially conveyed to pass through the oxygen-expelling mechanism and the filling mechanism;

2. A filling apparatus according to claim 1, wherein: the first medium is liquid nitrogen or dry ice.

3. A filling apparatus according to claim 1, wherein: the constant pressure valve comprises a valve body with a valve cavity communicated with the liquid storage tank, a hollow liquid valve rod penetrating through the valve body, and a pressure spring, wherein the lower end of the pressure spring is fixedly arranged on the valve body, the upper end of the pressure spring is fixedly arranged at the upper end of the hollow liquid valve rod, and the upper end and the lower end of the hollow liquid valve rod are respectively communicated with back pressure gas of the liquid storage tank and the PET bottle;

4. A filling apparatus according to claim 3, wherein: the valve cavity comprises the first cavity, and the first cavity is positioned between the barrier and the PET bottle.

5. A filling apparatus according to claim 3, wherein: the upper end of the valve body penetrates through the liquid storage tank, the lower end of the valve body penetrates out of the liquid storage tank, and the blocking piece is located below the liquid storage tank.

6. A filling apparatus according to claim 3, wherein: the valve body is provided with a liquid inlet for leading the liquid in the liquid storage tank into the valve cavity.