A filling device

Abstract

The utility model discloses a kind of filling devices, it is related to filling equipment technical field, including filling needle, filling needle includes back suction pipe and the filling pipe of setting in the back suction pipe outside, first passage is formed inside back suction pipe, second passage is formed between filling pipe and back suction pipe, back suction mouth of back suction pipe is above filling mouth of filling pipe, and the retaining portion for keeping back suction mouth position is equipped above filling mouth.The filling device has the advantages of realizing quick back suction to avoid material drip and stick at filling nozzle.

Description

Technical Field

[0001] This utility model belongs to the field of filling equipment technology, and in particular relates to a filling device. Background Technology

[0002] In the field of filling equipment technology, for liquid materials such as oral liquids, syrups, and ointments, dripping, adhesion, and stringing at the filling nozzle during the filling process can lead to material trapping at the sealing point. This material trapping at the sealing point, in turn, results in poor product filling accuracy and inadequate sealing. Especially for products packaged in soft bags, which typically use heat sealing, material trapping at the sealing point directly causes the seal to fail, leading to air and liquid leakage, and consequently, serious product quality problems. Due to the long distance between the filling pump and the dispensing nozzle outlet, back suction via the filling pump is delayed, resulting in insignificant back suction and causing dripping, adhesion, and stringing of liquid materials during filling. Existing stop nozzle filling needle cylinders are noisy during operation, the sealing ring in contact with the stop rod is easily worn, and the friction between the stop rod and the inner wall of the filling needle nozzle causes trace metal particles to enter the material. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a method to achieve rapid back suction, thereby avoiding material dripping and sticking at the filling nozzle.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A filling device includes a filling needle, which includes a suction tube and a filling tube sleeved outside the suction tube. A first channel is formed inside the suction tube, and a second channel is formed between the filling tube and the suction tube. The suction port of the suction tube is above the filling port of the filling tube. A holding part is provided above the filling port to maintain the position of the suction port, thereby achieving rapid suction and preventing material from dripping and sticking at the filling nozzle.

[0006] As a further improvement to the above technical solution:

[0007] The suction pipe is equipped with a first connecting block, and the filling pipe is detachably connected to the connecting block. The top of the filling pipe is equipped with a second connecting block, and a sealing ring is pressed between the second connecting block and the first connecting block to effectively prevent material leakage during the filling process and facilitate disassembly and cleaning.

[0008] The side wall of the filling tube is equipped with an interface, and the second channel is connected to the filling pipeline through the interface for easy disassembly and assembly.

[0009] The bottom of the filling tube is provided with an inverted conical filling port for easy back suction. The retaining part and the filling port are welded to the filling tube in sequence. There is a gap between the retaining part and the back suction tube for easy processing. During assembly, the retaining part guides the back suction tube to the center to prevent the back suction tube from being skewed.

[0010] It also includes a buffer tank, a filling pipeline, and a back suction pipeline. The first channel is connected to the back suction pipeline, and the second channel is connected to the filling pipeline. A filling pump is installed on the filling pipeline, and a back suction pump is installed on the back suction pipeline. Both the filling pipeline and the back suction pipeline are connected to the buffer tank to recycle the material after back suction and reduce material waste.

[0011] The buffer tank is equipped with a level gauge to detect the material level inside the tank, which is used to control the feeding of the buffer tank and maintain the material level inside the tank.

[0012] The filling pipeline connects to the bottom of the buffer tank, and the back suction pipeline connects to the top of the buffer tank to ensure filling accuracy and stability and reduce the impact of the back suction process on the filling process.

[0013] A control valve is installed on the filling pipeline, located between the filling needle and the filling pump, to facilitate control of the filling and cleaning process.

[0014] The filling pump is a rotary valve pump, and the back suction pump is a peristaltic pump or a rotor pump, which realizes the filling and back suction processes and can be used for online cleaning.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This utility model discloses a filling device, comprising a filling needle, which includes a suction tube and a filling tube sleeved outside the suction tube. A first channel is formed inside the suction tube, and a second channel is formed between the filling tube and the suction tube. The suction port of the suction tube is located above the filling port of the filling tube. A holding part is provided above the filling port to maintain the position of the suction port. By providing a first channel for suction and a second channel for filling within the filling needle, filling and suction are completed separately through independent channels, avoiding the need for the filling pump to simultaneously perform suction and filling, which could lead to insufficient suction. At this time, the suction port is located above the filling port. The retaining part ensures the position of the suction port, guaranteeing the suction effect and achieving rapid suction to avoid material dripping and sticking at the filling nozzle. When the suction tube is assembled with the filling tube, since the filling needle is relatively long, the retaining part can ensure that the suction tube passes through the filling tube in the center, avoiding collisions caused by the suction tube being skewed and damaging the filling needle. The retaining part limits the suction tube around its periphery, keeping it in the center position. During the filling process, the distance between the suction port and the filling port is not inconvenient, and it is always in the optimal position after adjustment to ensure the suction effect. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the filling needle of a filling device according to the present invention;

[0018] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0019] Figure 3This is a schematic diagram of the filling needle of a filling device according to the present invention;

[0020] Figure 4 This is a schematic diagram of the overall structure of a filling device according to the present invention.

[0021] The reference numerals in the accompanying drawings of this utility model are as follows: 1. Buffer tank; 2. Filling pipeline; 3. Back suction pipeline; 4. Filling needle; 5. First channel; 6. Second channel; 7. Filling pump; 8. Back suction pump; 9. Back suction pipe; 91. Back suction port; 10. Filling pipe; 101. Filling port; 11. Interface; 12. First connecting block; 13. Second connecting block; 14. Sealing ring; 15. Holding part; 16. Level gauge; 17. Control valve. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 4 The filling device shown includes a filling needle 4, which includes a suction pipe 9 and a filling pipe 10 sleeved outside the suction pipe 9. A first channel 5 is formed inside the suction pipe 9, and a second channel 6 is formed between the filling pipe 10 and the suction pipe 9. The suction port 91 of the suction pipe 9 is above the filling port 101 of the filling pipe 10. A holding part 15 is provided above the filling port 101 to maintain the position of the suction port 91. By setting the first channel 5 for suction and the second channel 6 for filling inside the filling needle 4, filling and suction are completed separately through independent channels, avoiding the need for the filling pump to simultaneously perform suction and filling, which would lead to untimely suction. The suction port 91 is located above the filling port 101. The retaining part 5 ensures the position of the suction port 91, ensuring the suction effect and achieving rapid suction to avoid material dripping and sticking at the filling nozzle. When the suction tube 9 is assembled with the filling tube 10, since the filling needle is relatively long, the retaining part 15 can ensure that the suction tube 9 passes through the filling tube 10 in the center, avoiding collisions caused by the skewed suction tube 91 and damage to the filling needle. The retaining part 15 limits the suction tube 9 on the periphery, keeping the suction tube 9 in the center position. During the filling process, the distance between the suction port 91 and the filling port 101 is not inconvenient, and it is always in the optimal position after adjustment to ensure the suction effect.

[0024] The suction tube 9 is equipped with a first connecting block 12, and the filling tube 10 is detachably connected to the connecting block. A second connecting block 13 is located at the top of the filling tube 10, and a sealing ring 14 is pressed between the second connecting block 13 and the first connecting block 12. During assembly, the suction tube 9 is inserted into the filling tube 10 from top to bottom. The retaining part 15 guides the suction tube 9 in a centered manner. The first connecting block 12 presses against the sealing ring 14 and then is threadedly connected to the second connecting block 14. Assembly and disassembly are convenient and quick. After disassembly, the filling tube 10 and the suction tube 9 can be cleaned and sterilized separately to ensure sterilization effectiveness. The sealing ring 14 is easy to replace and ensures a good seal. The side wall of the filling tube 10 is equipped with an interface 11, through which the second channel 6 connects to the filling pipeline 2, facilitating assembly and disassembly.

[0025] The bottom of the filling tube 10 is provided with an inverted conical filling port 101. During back suction, it mainly sucks back the material remaining on the inverted conical inclined surface. Since the back suction port 91 is close to the inclined surface, it can achieve rapid back suction and avoid dripping. The holding part 15 and the filling port 101 are welded to the filling tube 10 in sequence. The holding part 15 is a cylinder with a square block inside. The cylinder is welded to the filling tube 10, and then the filling port 101 is welded to the bottom of the cylinder. The filling port 101 has an inverted conical structure, which makes it easy to process the inverted conical shape of the filling port 101 first, and then weld the filling port 101 to the holding part 15. There is a gap between the holding part 15 and the back suction tube 9 for the back suction tube 9 to pass through, so as to achieve the centering guidance of the back suction tube 9 during assembly.

[0026] It also includes a buffer tank 1, a filling pipeline 2, and a back suction pipeline 3. A first channel 5 connects to the back suction pipeline 3, and a second channel 6 connects to the filling pipeline 2. A filling pump 7 is installed on the filling pipeline 2, and a back suction pump 8 is installed on the back suction pipeline 3. Both the filling pipeline 2 and the back suction pipeline 3 are connected to the buffer tank 1 to recycle the back-suctioned material, reducing material waste. A level gauge 16 is installed on the buffer tank 1 to detect the material level inside, controlling the feed and maintaining the material level. The filling pipeline 2 connects to the bottom of the buffer tank 1, and the back suction pipeline 3 connects to the top of the buffer tank 1, ensuring filling accuracy and stability and reducing the impact of the back suction process on the filling process. A control valve 17 is installed on the filling pipeline 2, positioned between the filling needle 4 and the filling pump 7, facilitating control of the filling and cleaning processes. The filling pump 7 is a rotary valve pump, and the back suction pump 8 is a peristaltic pump or a rotor pump, realizing the filling and back suction process. The peristaltic pump and rotor pump can rotate in both directions and are suitable for online cleaning. When back suction is required, the back suction pump 8 draws the material back from the back suction pipe 9 to the buffer tank 1. When cleaning is required, the back suction pump 8 delivers the cleaning fluid from the buffer pipe 1 to the back suction pipe 9 and then discharges it through the filling port 101. After the batch of materials has been filled, online cleaning can be used. When the material type is changed, offline cleaning can be used by disassembling the filling needle for cleaning.

[0027] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A filling device, characterized in that, The device includes a filling needle (4), which includes a suction tube (9) and a filling tube (10) sleeved outside the suction tube (9). A first channel (5) is formed inside the suction tube (9), and a second channel (6) is formed between the filling tube (10) and the suction tube (9). The suction port (91) of the suction tube (9) is above the filling port (101) of the filling tube (10), and a holding part (15) for holding the position of the suction port (91) is provided above the filling port (101).

2. The filling device as described in claim 1, characterized in that, The suction pipe (9) is provided with a first connecting block (12), the filling pipe (10) is detachably connected to the connecting block, the top of the filling pipe (10) is provided with a second connecting block (13), and a sealing ring (14) is pressed between the second connecting block (13) and the first connecting block (12).

3. The filling device as described in claim 1, characterized in that, The side wall of the filling tube (10) is provided with an interface (11), and the second channel (6) is connected to the filling pipeline (2) through the interface (11).

4. A filling device as described in claim 1, characterized in that, The bottom of the filling tube (10) is provided with an inverted conical filling port (101). The retaining part (15) and the filling port (101) are sequentially welded onto the filling tube (10). There is a gap between the retaining part (15) and the back suction tube (9).

5. A filling device as described in claim 1, characterized in that, It also includes a buffer tank (1), a filling pipeline (2), and a back suction pipeline (3). The first channel (5) is connected to the back suction pipeline (3), and the second channel (6) is connected to the filling pipeline (2). The filling pipeline (2) is equipped with a filling pump (7), and the back suction pipeline (3) is equipped with a back suction pump (8). Both the filling pipeline (2) and the back suction pipeline (3) are connected to the buffer tank (1).

6. A filling device as described in claim 5, characterized in that, The buffer tank (1) is equipped with a level gauge (16).

7. A filling device as described in claim 5, characterized in that, The filling pipeline (2) is connected to the bottom of the buffer tank (1), and the back suction pipeline (3) is connected to the top of the buffer tank (1).

8. A filling device as described in claim 5, characterized in that, The filling pipeline (2) is equipped with a control valve (17), which is located between the filling needle (4) and the filling pump (7).

9. A filling device as described in claim 5, characterized in that, The filling pump (7) is a rotary valve pump, and the back suction pump (8) is a peristaltic pump or a rotor pump.

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