Negative pressure filling head and liquid material negative pressure filling device

Abstract

The utility model relates to the technical field of liquid filling, in particular to a negative pressure filling head and a liquid material negative pressure filling device.The negative pressure filling head comprises a liquid outlet pipe, a liquid inlet part is arranged on the upper portion of the liquid outlet pipe, a liquid outlet part inserted into an inner cavity of a bottle body is arranged on the lower portion of the liquid outlet pipe, and a positioning head in sealed connection is arranged at the bottom end of the liquid outlet pipe. A liquid outlet pipe is arranged in the bottle body, a gas guide pipe is arranged in the liquid outlet pipe, one end of the gas guide pipe is communicated with an inner cavity of the bottle body, the other end of the gas guide pipe is communicated with a vacuum pipeline, the liquid outlet pipe is sleeved with a sleeve, and a bottle opening sealing taper sleeve with the position adjustable is arranged on the sleeve. After the negative pressure filling head is inserted into a bottle body, the bottle opening sealing taper sleeve located on the sleeve effectively seals the bottle opening and isolates outside air, vacuumizing of an inner cavity of the bottle body can be achieved, liquid bottling in the negative pressure state can also be achieved, the position of the bottle opening sealing taper sleeve is adjustable, and sealing of the bottle bodies of different heights can be met.

Description

Technical Field

[0001] This utility model relates to the field of liquid filling technology, and in particular to a negative pressure filling head and a negative pressure filling device for liquid materials. Background Technology

[0002] In the field of liquid material filling technology, traditional filling methods mostly use atmospheric pressure or positive pressure filling. During the filling process, air bubbles often get mixed in, which makes the filled liquid prone to deterioration during storage and greatly shortens the shelf life.

[0003] Utility model patent CN213475377U discloses a quantitative negative pressure filling machine for irregularly shaped bottles, including a storage tank, a vacuum pump, and a collection tank. The outlet of the storage tank is connected to multiple branch conveying pipes through a main conveying pipe. Each branch conveying pipe has a buffer chamber at its lower part, and a filling head is located below the buffer chamber. The filling head is equipped with a filling pipe and a pumping pipe. A switch valve is installed on the filling pipe between the buffer chamber and the filling head. A liquid sensor is installed on the pumping pipe above the filling head. The upper part of the pumping pipe is connected to the vacuum pump through a vacuum pipe. The outlet of the vacuum pump is connected to the collection tank through a pipe. A conveying device is located below the filling head, and the bottle is placed on the conveying device. The bottle is located below the filling head, so that the entire system from the storage tank to the bottle is under negative pressure, minimizing the contact between the liquor and air during the filling process, thus preserving the original flavor and good taste of the liquor. The above-mentioned disclosed solution achieves negative pressure filling through the cooperation of a buffer chamber, a filling head, and a switching valve between the two. The technical solution of this application discloses a filling head and a negative pressure filling device for liquid materials that is different from the above solution. Utility Model Content

[0004] Technical objective: In order to overcome the shortcomings of the existing technology, this utility model provides a negative pressure filling head and a negative pressure filling device for liquid materials.

[0005] Technical Solution: To achieve the above objectives, this utility model discloses a negative pressure filling head, including a liquid outlet tube. The upper part of the liquid outlet tube is provided with a liquid inlet, and the lower part of the liquid outlet tube is provided with a liquid outlet that is inserted into the inner cavity of the bottle. The bottom end of the liquid outlet tube is provided with a positioning head that is sealed and connected. An air guide tube is provided inside the liquid outlet tube. One end of the air guide tube communicates with the inner cavity of the bottle, and the other end communicates with a vacuum line. A sleeve is provided outside the liquid outlet tube, and an adjustable bottle mouth sealing cone sleeve is provided on the sleeve.

[0006] Preferably, the liquid outlet is a plurality of through holes penetrating the side wall of the liquid outlet pipe.

[0007] Preferably, the positioning head includes a connecting part, a tapered guide head, and a sealing flange located between the connecting part and the tapered guide head. The sealing flange is fitted with a first sealing ring. The connecting part is provided with an external thread that mates with the liquid outlet pipe. After the connecting part is screwed into the liquid outlet pipe, the end face of the sealing flange abuts against the liquid outlet pipe and the end face is sealed by the first sealing ring.

[0008] Preferably, the sleeve is movable relative to the liquid outlet pipe, and the sleeve is provided with a slide at the end near the liquid inlet. A spring is provided between the slide and the liquid inlet and sleeved on the liquid outlet pipe. When the spring is in a freely extended state, the sleeve covers the liquid outlet and the air guide pipe port, and cooperates with the first sealing ring to form a circumferential seal.

[0009] Preferably, a first spring seat connected by bolts is provided above the slide block, a second sealing ring is provided between the slide block and the first spring seat, and the first spring seat is provided with a first positioning boss that is inserted into the spring and adapted to the inner diameter of the spring.

[0010] Preferably, the liquid inlet includes a fixed seat and a steering bushing. A third sealing ring is provided circumferentially between the fixed seat and the steering bushing. A liquid flow channel is also provided at the center of the fixed seat and the steering bushing. The liquid flow channel is perpendicular to and communicates with the liquid outlet pipe. The air guide pipe passes through the liquid flow channel and extends to the outside of the steering bushing. The steering bushing is also provided with a second spring seat that is sleeved on the end of the liquid outlet pipe and abuts against the spring. The second spring seat is provided with a second positioning boss that is inserted into the spring and matches the inner diameter of the spring.

[0011] Preferably, the first sealing ring, the second sealing ring, and the third sealing ring are all O-rings.

[0012] Preferably, the bottle neck sealing cone sleeve includes a rubber cone and an adjusting seat, the adjusting seat being provided with a clamping bolt for locking the position.

[0013] This utility model also provides a negative pressure filling device for liquid materials, including the above-mentioned negative pressure filling head, and a liquid storage tank installed on the upper part of the frame. The bottom of the liquid storage tank is connected to the liquid inlet, and the upper part of the liquid storage tank is connected to the air guide pipe through a vacuum pipeline. The lower part of the frame is also provided with a vacuum pump, an air storage tank, and a feed pump for supplying liquid to the liquid storage tank. The air storage tank is provided with pipelines that are connected to the liquid storage tank and the vacuum pump respectively.

[0014] Preferably, the frame is provided with bottle holders for placing bottles, and there are two bottle holders arranged on both sides of the liquid storage tank. The frame and the bottle holders are detachably connected. The frame and / or the bottle holders are provided with multiple elongated holes for adjusting their relative positions. The liquid storage tank is provided with a breather valve, a sight glass and a liquid level sensor.

[0015] The beneficial effects of this utility model are:

[0016] 1. The negative pressure filling head of this application has a built-in air guide tube for vacuuming and a liquid outlet tube for liquid bottling. After the negative pressure filling head is inserted into the bottle body, the bottle mouth sealing cone sleeve located on the sleeve effectively seals the bottle mouth and isolates the outside air, which can realize the vacuuming of the inner cavity of the bottle and the bottling of liquid under negative pressure. The position of the bottle mouth sealing cone sleeve is adjustable to meet the sealing of bottles of different heights.

[0017] 2. By adjusting the position of the sealing cone sleeve on the sleeve, after the negative pressure filling head is inserted into the bottle, the sleeve moves upward to expose the liquid outlet and the gas guide tube port. At this time, vacuuming and liquid filling can be performed. After filling is completed, the bottle is removed. Under the action of the spring, the sleeve moves downward to cover the liquid outlet and the gas guide tube port. At this time, the vacuum passage and the liquid passage are cut off and automatically closed. When this device is used, there is no need to configure the switch valve in the pipeline, saving pipeline layout space. Moreover, under the action of the spring, the sealing cone sleeve seals the bottle mouth more tightly and reliably.

[0018] 3. The negative pressure filling device for liquid materials of this application can realize small-batch filling of liquids. During the negative pressure filling process, air can be effectively prevented from entering the bottle, thus extending the shelf life of the liquid. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the negative pressure filling head of this utility model during filling;

[0020] Figure 2 This is a cross-sectional view of the negative pressure filling head of this utility model in its unfilled state;

[0021] Figure 3 Appendix to this utility model Figure 1 A magnified view of a portion of region A in the middle;

[0022] Figure 4 Appendix to this utility model Figure 2 A magnified view of a portion of region B in the middle;

[0023] Figure 5 This is a front view of the negative pressure filling device for liquid materials according to this utility model;

[0024] Figure 6 This is a left view of the negative pressure filling device for liquid materials according to this utility model;

[0025] Figure 7 This is a schematic diagram illustrating the working principle of the negative pressure filling device for liquid materials according to this utility model.

[0026] In the diagram, 1. Discharge pipe; 2. Inlet section; 201. Fixed base; 202. Steering bushing; 203. Third sealing ring; 204. Liquid flow channel; 205. Second spring seat; 206. Second positioning boss; 3. Discharge section; 4. Positioning head; 401. Connecting part; 402. Sealing flange; 403. Conical guide head; 5. Air guide pipe; 6. Sleeve; 7. Bottle mouth sealing cone sleeve; 701. Rubber cone; 702. Adjustment... 703. Clamping bolt; 8. First sealing ring; 9. Slide; 10. Spring; 11. First spring seat; 12. Second sealing ring; 13. First positioning boss; 14. Frame; 15. Liquid storage tank; 16. Vacuum pipeline; 17. Vacuum pump; 18. Gas storage tank; 19. Feed pump; 20. Bottle body; 21. Bottle support bracket; 22. Oblong hole; 23. Breathing valve; 24. Sight glass; 25. Liquid level sensor. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 To be continued Figure 7 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0028] Example 1:

[0029] A negative pressure filling head, such as Figures 1-4 As shown, the device includes an outlet pipe 1, with an inlet section 2 at the upper part of the outlet pipe 1. The inlet section 2 includes a fixed seat 201 and a steering shaft sleeve 202. A third sealing ring 203 is provided circumferentially between the fixed seat 201 and the steering shaft sleeve 202. The number of third sealing rings 203 can be multiple. In this embodiment, there are two third sealing rings 203 arranged at intervals, which can achieve circumferential sealing between the fixed seat 201 and the steering shaft sleeve 202. The third sealing ring 203 is an O-ring, or it can be a sealing gasket with a square cross-section or other sealing elements well known to those skilled in the art.

[0030] The fixed base 201 and the steering bushing 202 are also provided with a liquid flow channel 204 at their center. The liquid flow channel 204 is perpendicular to and communicates with the liquid outlet pipe 1. After the liquid from the storage tank 15 enters the fixed base 201, it flows through the liquid flow channel 204, through the steering bushing 202, and into the liquid outlet pipe 1. The lower part of the liquid outlet pipe 1 is provided with a liquid outlet section 3 that is inserted into the inner cavity of the bottle body 20 for the liquid to flow into the bottle body 20. The liquid outlet section 3 consists of multiple through holes penetrating the side wall of the liquid outlet pipe 1. In this embodiment, there are four through holes arranged in a circumferential array on the side wall of the liquid outlet pipe 1. The liquid outlet pipe 1 is provided with a gas guide pipe 5. One end of the gas guide pipe 5 communicates with the inner cavity of the bottle body 20, and the other end passes through the liquid flow channel 204 and extends to the outside of the steering bushing 202 to communicate with the vacuum pipeline 16 for evacuating the bottle body 20.

[0031] The bottom end of the outlet pipe 1 is provided with a sealing connection positioning head 4. The positioning head 4 includes a connecting part 401, a tapered guide head 403, and a sealing flange 402 located between the connecting part 401 and the tapered guide head 403. The sealing flange 402 is fitted with a first sealing ring 8, which can be an O-ring or other sealing element well known to those skilled in the art, such as a Y-ring. The connecting part 401 is provided with an external thread that mates with the outlet pipe 1. After the connecting part 401 is screwed into the outlet pipe 1, the end face of the sealing flange 402 abuts against the outlet pipe 1 and the end face is sealed by the first sealing ring 8, which can prevent liquid from leaking from the joint between the outlet pipe 1 and the positioning head 4.

[0032] A sleeve 6 is fitted over the outside of the outlet pipe 1. The sleeve 6 is movable relative to the outlet pipe 1, and an adjustable bottle mouth sealing cone sleeve 7 is provided on the sleeve 6. Further, the bottle mouth sealing cone sleeve 7 includes a rubber cone 701 made of rubber and an adjusting seat 702. The adjusting seat 702 is provided with a clamping bolt 703 for locking the position, which can realize the tightening of the bottle mouth sealing cone sleeve 7 after the position is adjusted on the sleeve 6, and prevent the bottle mouth sealing cone sleeve 7 from shifting and causing the bottle mouth seal to fail.

[0033] The sleeve 6 is also provided with a slide 9 at the end near the liquid inlet 2. A spring 10 is provided between the slide 9 and the liquid inlet 2 and fitted onto the liquid outlet pipe 1. Further, a first spring seat 11 bolted to the slide 9 is provided above the slide 9. A second sealing ring 12 is provided between the slide 9 and the first spring seat 11. The first spring seat 11 has a first positioning boss 13 that is inserted into the spring 10 and matches the inner diameter of the spring 10. The second sealing ring 12 can prevent liquid from leaking from the gap between the liquid outlet pipe 1 and the sleeve 6. In this embodiment, the second sealing ring 12 is an O-ring, or it can be a sealing gasket with a square cross-section or other sealing elements well known to those skilled in the art. The steering shaft sleeve 202 is also provided with a second spring seat 205 fitted onto the end of the liquid outlet pipe 1 and abutting against the spring 10. The second spring seat 205 has a second positioning boss 206 that is inserted into the spring 10 and matches the inner diameter of the spring 10. Both the first positioning boss 13 and the second positioning boss 206 are used to position the spring 10 to prevent the spring 10 from deflecting during compression or extension. When the spring 10 is in its freely extended state, the sleeve 6 covers the liquid outlet 3 and the port of the air guide tube 5, and cooperates with the first sealing ring 8 to form a circumferential seal, so that liquid will not flow into the bottle body 20.

[0034] After the device is inserted into the bottle 20, the bottle 20 pushes the bottle mouth sealing cone sleeve 7 and the sleeve 6 upwards together, fully exposing the liquid outlet 3 and the gas guide tube 5. The spring 10 is compressed, and the rubber cone 701 effectively seals the bottle mouth under the pushing force of the spring 10. At this time, the bottle 20 can be vacuumed and filled sequentially. When the bottle 20 is removed, the spring 10 returns to its original position, the sleeve 6 moves downwards, and the liquid outlet 3 and the gas guide tube 5 are blocked, closing both the vacuuming and filling passages. During use, no additional valves are needed in the corresponding pipelines, saving pipeline layout space.

[0035] Example 2:

[0036] A negative pressure filling device for liquid materials, such as Figures 5-7 As shown, the system includes the aforementioned negative pressure filling head, as well as a liquid storage tank 15 mounted on the upper part of the frame 14. The liquid storage tank 15 is equipped with a breather valve 23, a sight glass 24, and a liquid level sensor 25. The bottom of the liquid storage tank 15 is connected to the liquid inlet 2. The frame 14 is equipped with two bottle support brackets 21 for placing bottles 20. The bottle support brackets 21 are arranged on both sides of the liquid storage tank 15. The frame 14 and the bottle support brackets 21 are connected by snap-fit ​​pins, or bolts can also be used. The frame 14 and the bottle support brackets 21 may have multiple elongated holes 22, either individually or simultaneously, to allow the height of the bottle support brackets 21 relative to the frame 14 to accommodate bottles of different sizes 20.

[0037] The upper part of the liquid storage tank 15 is connected to the gas guide pipe 5 via a vacuum pipeline 16. The lower part of the frame 14 is also equipped with a vacuum pump 17 and a gas storage tank 18. The air inlet of the vacuum pump 17 is connected to the gas storage tank 18, and the gas storage tank 18 is connected to the liquid storage tank 15 via a pipeline. The lower part of the frame 14 is also equipped with a feed pump 19 for supplying liquid to the liquid storage tank 15. The feed pump 19 can be a centrifugal pump or a gear pump. The feeding and vacuuming of the entire device are automatically controlled by a PLC, resulting in a higher degree of automation and convenient operation.

[0038] During vacuuming, the solenoid valve corresponding to the gas storage tank 18 is opened, and the vacuum pump 17 is started. The air in the bottle 20 enters the liquid storage tank 15 through the air guide pipe 5 and the vacuum pipeline 16. It merges with the upper air in the liquid storage tank 15 and enters the vacuum pump 17 through the gas storage tank 18. It is then drawn out by the vacuum pump 17, creating a negative pressure in the liquid storage tank 15 and the bottle 20. After the negative pressure is established, the bottle 20 is filled, which can reduce the amount of air entering the bottle 20 and extend the shelf life of the liquid.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A negative pressure filling head, characterized in that: The liquid outlet pipe (1) is provided with a liquid inlet portion (2) at the upper portion, a liquid outlet portion (3) inserted into the inner cavity of the bottle body (20) at the lower portion, a sealingly connected positioning head (4) at the bottom end, a gas guide pipe (5) inside the liquid outlet pipe (1), one end of the gas guide pipe (5) being communicated with the inner cavity of the bottle body (20) and the other end being communicated with a vacuum pipe (16), and a sleeve (6) outside the liquid outlet pipe (1), the sleeve (6) being provided with a bottle mouth sealing cone sleeve (7) with adjustable position.

2. The negative pressure fill head of claim 1, wherein: The liquid outlet portion (3) is a plurality of through holes penetrating the side wall of the liquid outlet pipe (1).

3. The negative pressure fill head of claim 1, wherein: The positioning head (4) comprises a connecting portion (401), a tapered guide head (403) and a sealing flange (402) between the connecting portion (401) and the tapered guide head (403), the sealing flange (402) is sleeved with a first sealing ring (8), the connecting portion (401) is provided with external threads matched with the liquid outlet pipe (1), after the connecting portion (401) is screwed into the liquid outlet pipe (1), the end surface of the sealing flange (402) abuts against the liquid outlet pipe (1) and realizes end surface sealing through the first sealing ring (8).

4. The negative pressure fill head of claim 3, wherein: The sleeve (6) is movable relative to the liquid outlet pipe (1), the sleeve (6) is provided with a sliding seat (9) at the end close to the liquid inlet portion (2), a spring (10) is arranged between the sliding seat (9) and the liquid inlet portion (2) and sleeved on the liquid outlet pipe (1), when the spring (10) is in free elongation state, the sleeve (6) covers the liquid outlet portion (3) and the gas guide pipe (5) port and forms circumferential sealing with the first sealing ring (8).

5. The negative pressure fill head of claim 4, wherein: A first spring seat (11) is arranged above the sliding seat (9) and connected by bolts, a second sealing ring (12) is arranged between the sliding seat (9) and the first spring seat (11), and the first spring seat (11) is provided with a first positioning boss (13) inserted into the spring (10) and matched with the inner diameter of the spring (10).

6. The negative pressure fill head of claim 4, wherein: The liquid inlet portion (2) comprises a fixed seat (201) and a steering shaft sleeve (202), a third sealing ring (203) is arranged between the fixed seat (201) and the steering shaft sleeve (202) in a circumferential direction, a liquid flow channel (204) is further arranged at the center of the fixed seat (201) and the steering shaft sleeve (202), the liquid flow channel (204) is perpendicular to and communicated with the liquid outlet pipe (1), the gas guide pipe (5) penetrates the liquid flow channel (204) and extends to the outside of the steering shaft sleeve (202), the steering shaft sleeve (202) is further provided with a second spring seat (205) sleeved on the end portion of the liquid outlet pipe (1) and abutting against the spring (10), and the second spring seat (205) is provided with a second positioning boss (206) inserted into the spring (10) and matched with the inner diameter of the spring (10).

7. The negative pressure fill head of claim 6, wherein: The first sealing ring (8), the second sealing ring (12) and the third sealing ring (203) are all O-rings.

8. The negative pressure fill head of claim 1, wherein: The bottle mouth sealing cone sleeve (7) comprises a rubber cone (701) and an adjusting seat (702), and the adjusting seat (702) is provided with a clamping bolt (703) for locking position.

9. A liquid product under-pressure filling apparatus, characterized by: The negative pressure filling head comprises a rack (14), a liquid inlet part (2), a guide pipe (5), a bottle mouth sealing cone sleeve (7), a liquid storage tank (15), a vacuum pump (17), a gas storage tank (18) and a material feeding pump (19).

10. The liquid product under-pressure filling apparatus of claim 9, wherein: The rack (14) is provided with bottle supporting frames (21) for placing bottle bodies (20), the number of the bottle supporting frames (21) is two, and the bottle supporting frames (21) are arranged on the two sides of the liquid storage tank (15), the rack (14) and the bottle supporting frames (21) are detachably connected, the rack (14) and / or the bottle supporting frames (21) are provided with a plurality of long circular holes (22) for adjusting relative positions, and the liquid storage tank (15) is provided with a breather valve (23), a sight glass (24) and a liquid level sensor (25).

Images