Anti-backflow quantitative filling head and liquid filling machine

Abstract

The utility model relates to the technical field of liquid filling, in particular to an anti-backflow quantitative filling head and a liquid filling machine, the anti-backflow quantitative filling head comprises a filling head, the inner surface of the filling head is provided with a movable groove, the filling head is internally provided with a blocking assembly, the blocking assembly comprises a first spring, and the lower end of the first spring is fixedly connected with the inner bottom surface of the movable groove; the upper end of the first spring is fixedly connected with a movable block, the outer surface of the movable block is fixedly connected with a limiting block, the inner surface of the movable groove is provided with a limiting groove, the outer surface of the limiting block is movably connected with the interior of the limiting groove, the upper surface of the movable block is provided with a blocking inclined groove, and the upper surface of the movable block is fixedly connected with a second spring; the upper end of the second spring is fixedly connected with a buffer block, and a buffer inclined groove is formed in the upper surface of the buffer block. According to the filling head, inside and outside communication of the filling head can be blocked after filling is finished, the situation that the inside of the filling head is affected by external pressure is avoided, backflow is prevented, and the filling head is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of liquid filling technology, and in particular to an anti-backflow quantitative filling head and a liquid filling machine. Background Technology

[0002] A liquid filling machine is a device used to fill bottles and cans with liquids. It is widely used in various industries such as cosmetics, pharmaceuticals, and beverages. A liquid filling machine includes a quantitative filling head, which is a crucial component of a fully automatic filling machine. It is primarily responsible for precisely controlling the filling volume of the fluid to meet preset requirements.

[0003] In existing technologies, liquid filling heads are usually transported by a pumping system during filling. The pumping system applies a large pressure to the internal liquid during transportation, resulting in a large pressure difference between the inside and outside of the filling head. This causes the liquid to flow back after filling, making it inconvenient to use the filling head. Utility Model Content

[0004] In view of this, the present invention provides an anti-backflow quantitative filling head and a liquid filling machine. The main technical problem to be solved is that the pressure difference between the inside and outside of the filling head is large during filling, which causes liquid backflow after filling.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an anti-backflow quantitative filling head and a liquid filling machine, comprising a filling head, wherein a movable groove is formed on the inner surface of the filling head, and a blocking component is installed inside the filling head, the blocking component comprising a first spring, the lower end of the first spring being fixedly connected to the inner bottom surface of the movable groove, a movable block being fixedly connected to the upper end of the first spring, a limiting block being fixedly connected to the outer surface of the movable block, a limiting groove being formed on the inner surface of the movable groove, the outer surface of the limiting block being movably connected to the interior of the limiting groove, a blocking inclined groove being formed on the upper surface of the movable block, a second spring being fixedly connected to the upper surface of the movable block, a buffer block being fixedly connected to the upper end of the second spring, and a buffer inclined groove being formed on the upper surface of the buffer block.

[0006] By adopting the above technical solution, the internal and external communication of the filling head can be blocked after filling, preventing backflow.

[0007] As a further description of the above technical solution:

[0008] A fixing ring is fixedly connected to the outer surface of the filling head, and a first mounting seat is provided on the outer surface of the filling head. A first mounting groove is opened on the side surface of the first mounting seat, and the interior of the first mounting groove is movably connected to the outer surface of the fixing ring. A threaded hole is opened on the side surface of the first mounting seat.

[0009] By adopting the above technical solution, the filling head can be installed through the fixing ring and the first mounting seat, which facilitates liquid filling.

[0010] As a further description of the above technical solution:

[0011] The outer surface of the filling head is provided with a second mounting seat, and the side surface of the second mounting seat is provided with a second mounting groove. The interior of the second mounting groove is movably connected to the outer surface of the fixing ring. The side surface of the second mounting seat is provided with a through hole, and a bolt is threadedly connected to the interior of the through hole. One end of the bolt is threadedly connected to the interior of the threaded hole.

[0012] By adopting the above technical solution, the filling head can be fixed after installation, thus preventing it from moving during filling.

[0013] As a further description of the above technical solution:

[0014] A connecting plate is fixedly connected to the side surface of the first mounting base, and a cylinder is provided below the connecting plate. The output end of the cylinder is fixedly connected to the lower surface of the connecting plate.

[0015] By adopting the above technical solution, the lifting and lowering of the filling head can be controlled, making it easier to insert the filling head into the container for filling.

[0016] As a further description of the above technical solution:

[0017] A fixing seat is fixedly connected to the upper surface of the filling head, and a slot is formed on the upper surface of the fixing seat.

[0018] By adopting the above technical solution, the connecting pipe can be connected to the filling head, which facilitates the delivery of liquid.

[0019] As a further description of the above technical solution:

[0020] The fixed base has a connecting tube inside, and a retaining ring is fixedly connected to the outer surface of the connecting tube. The lower end of the retaining ring is movably connected to the inside of the retaining groove. A rotating block is movably connected to the outer surface of the connecting tube, and the inner surface of the rotating block is threadedly connected to the outer surface of the fixed base.

[0021] By adopting the above technical solution, the connecting tube and filling head can be fixed after installation, thus preventing liquid leakage during filling.

[0022] As a further description of the above technical solution:

[0023] A liquid filling machine includes a filling machine body and the aforementioned anti-backflow quantitative filling head. The side surface of the filling machine body is fixedly connected to one end of a connecting pipe, and the upper surface of the filling machine body is fixedly connected to the lower surface of a cylinder.

[0024] By adopting the above technical solution, liquid can be transported to the filling head through the connecting pipe for liquid filling.

[0025] By employing the above technical solution, the anti-backflow quantitative filling head and liquid filling machine of this utility model have at least the following beneficial effects:

[0026] Compared with existing technologies, this anti-backflow metering filling head, through a movable groove and a blocking component, ensures that during filling, as the liquid flows out of the filling head, it first contacts a buffer block, applying downward pressure to the buffer block. This compresses a second spring, reducing the impact of the falling liquid and pushing the movable block downwards. The first spring is then compressed, connecting the filling head interior with the movable groove, thus enabling liquid filling. After filling is complete, the liquid delivery stops, and the liquid output pressure decreases. Under the elastic force of the first spring, the movable block rises, causing the blocking groove to connect with the movable groove. The top of the moving tank is connected to the inside, thus blocking the inside and outside of the filling head. Compared with the existing technology, where liquid filling heads are usually transported by a pumping system during filling, the pumping system applies a large pressure to the internal liquid during transportation, resulting in a large pressure difference between the inside and outside of the filling head. This causes the liquid to flow back after filling, making it inconvenient to use the filling head. This anti-backflow quantitative filling head can block the connection between the inside and outside of the filling head after filling, preventing external pressure from affecting the inside of the filling head, preventing backflow, and facilitating the use of the filling head. Attached Figure Description

[0027] Figure 1 This is a first-view overall structural diagram of an anti-backflow quantitative filling head and a liquid filling machine proposed in this utility model;

[0028] Figure 2 This is a second-view overall structural diagram of an anti-backflow quantitative filling head and a liquid filling machine proposed in this utility model;

[0029] Figure 3 This is a third-view overall structural diagram of an anti-backflow quantitative filling head and a liquid filling machine proposed in this utility model.

[0030] Figure 4 This is a half-sectional schematic diagram of an anti-backflow quantitative filling head proposed in this utility model;

[0031] Figure 5 This utility model proposes an anti-backflow quantitative filling head. Figure 4 Enlarged view of the structure at point A in the middle;

[0032] Figure 6 This utility model proposes an anti-backflow quantitative filling head. Figure 4 Enlarged view of the structure at point B in the middle;

[0033] Figure 7 This is a partial structural cross-sectional view of an anti-backflow quantitative filling head proposed in this utility model;

[0034] Figure 8 This is an enlarged view of the structure at point C in Figure 7 of the anti-backflow quantitative filling head proposed in this utility model;

[0035] Figure 9 The enlarged view of section D in Figure 7 shows the structure of an anti-backflow quantitative filling head proposed in this utility model.

[0036] Legend:

[0037] 1. Filling head; 101. Movable groove; 2. Blocking assembly; 201. First spring; 202. Movable block; 203. Limiting block; 204. Limiting groove; 205. Blocking inclined groove; 206. Second spring; 207. Buffer block; 208. Buffer inclined groove; 3. Fixing ring; 4. First mounting seat; 5. First mounting groove; 6. Threaded hole; 7. Second mounting seat; 8. Second mounting groove; 9. Through hole; 10. Bolt; 11. Connecting plate; 12. Cylinder; 13. Fixing seat; 14. Slot; 15. Connecting pipe; 16. Snap ring; 17. Rotating block; 18. Filling machine body. Detailed Implementation

[0038] Reference Figure 1-9This utility model provides an anti-backflow quantitative filling head and a liquid filling machine: It includes a filling head 1, with a movable groove 101 on its inner surface. The movable groove 101 can accommodate a blocking component 2 moving within it, facilitating the use of the filling head 1. The blocking component 2 is installed inside the filling head 1. The blocking component 2 includes a first spring 201, the lower end of which is fixedly connected to the inner bottom surface of the movable groove 101. The first spring 201 can apply a force to the movable block 202. The movable block 202 is pushed upwards. The upper end of the first spring 201 is fixedly connected to the movable block 202. The upward movement of the movable block 202 facilitates the blocking of the connection between the inclined groove 205 and the inner top of the movable groove 101. A limiting block 203 is fixedly connected to the outer surface of the movable block 202. A limiting groove 204 is formed on the inner surface of the movable groove 101. The outer surface of the limiting block 203 is movably connected to the inside of the limiting groove 204. Through the cooperation of the limiting block 203 and the limiting groove 204, the movable block 202 can be restricted to moving only... The movable block 202 is capable of linear movement. An annular blocking groove 205 is formed on the upper surface of the movable block 202, facilitating contact with the inner top of the movable groove 101. This blocking groove 205, in contact with the inner top of the movable groove 101, blocks the channel between the movable groove 101 and the inner surface of the filling head 1, preventing external pressure from affecting the interior of the filling head 1 and thus preventing backflow of liquid inside the filling head 1. A second spring 206 is fixedly connected to the upper surface of the movable block 202. Spring 206 provides a certain upward resistance when buffer block 207 descends, thereby reducing the impact of the descending buffer block 207. The upper end of the second spring 206 is fixedly connected to the buffer block 207. The upper surface of the buffer block 207 is provided with a buffer groove 208. The buffer groove 208 is hemispherical. The buffer groove 208 directly contacts the liquid being transported during filling and flows out from the gap formed between the movable block 202 and the movable groove 101 after the movable block 202 descends, thereby carrying out filling.

[0039] A fixing ring 3 is fixedly connected to the outer surface of the filling head 1. A first mounting seat 4 is provided on the outer surface of the filling head 1. A first mounting groove 5 is opened on the side surface of the first mounting seat 4. The interior of the first mounting groove 5 is movably connected to the outer surface of the fixing ring 3. By connecting the fixing ring 3 to the first mounting groove 5, the filling head 1 can be installed. A threaded hole 6 is opened on the side surface of the first mounting seat 4. A second mounting seat 7 is provided on the outer surface of the filling head 1. A second mounting groove 8 is opened on the side surface of the second mounting seat 7. The interior of the second mounting groove 8 is movably connected to the outer surface of the fixing ring 3. The other side of the fixing ring 3 can be installed and limited through the second mounting groove 8, which facilitates the fixing of the filling head 1 and the use of the filling head 1. A through hole 9 is opened on the side surface of the second mounting seat 7. A bolt 10 is threadedly connected to the interior of the through hole 9. One end of the bolt 10 is threadedly connected to the interior of the threaded hole 6. The bolt 10 can be connected and fixed to the second mounting seat 7 and the first mounting seat 4 respectively through the through hole 9 and the threaded hole 6, thereby fixing the filling head 1.

[0040] A connecting plate 11 is fixedly connected to the side surface of the first mounting base 4. A cylinder 12 is provided below the connecting plate 11. The output end of the cylinder 12 is fixedly connected to the lower surface of the connecting plate 11. The extension and retraction of the cylinder 12 can control the lifting and lowering of the connecting plate 11, that is, control the lifting and lowering of the filling head 1.

[0041] A fixing seat 13 is fixedly connected to the upper surface of the filling head 1. A groove 14 is formed on the upper surface of the fixing seat 13. The groove 14 can connect with the lower end of the retaining ring 16, thereby completing the connection between the upper end of the filling head 1 and the lower end of the connecting tube 15. The connecting tube 15 is provided inside the fixing seat 13, and the filling liquid can be transported through the connecting tube 15. A retaining ring 16 is fixedly connected to the outer surface of the connecting tube 15. The lower end of the retaining ring 16 is movably connected to the inside of the groove 14. The cross-section of the retaining ring 16 is inverted L-shaped. The lower end of the retaining ring 16 enters the groove 14, thereby connecting the connecting tube 15 and the filling head. 1. A rotating block 17 is movably connected to the outer surface of the connecting tube 15. The rotating block 17 can rotate freely on the outer surface of the connecting tube 15. The inner surface of the rotating block 17 is threadedly connected to the outer surface of the fixed seat 13. After connecting the retaining ring 16 to the retaining groove 14, the rotating block 17 is rotated so that the inner surface of the rotating block 17 is threadedly connected to the outer surface of the fixed seat 13, causing the rotating block 17 to move towards the filling head 1, thereby applying downward pressure to the retaining ring 16, thus making the connection between the retaining ring 16 and the retaining groove 14 tighter and preventing leakage at the connection position between the connecting tube 15 and the filling head 1.

[0042] A liquid filling machine includes a filling machine body 18 and an anti-backflow quantitative filling head. The side surface of the filling machine body 18 is fixedly connected to one end of a connecting pipe 15. The filling machine body 18 can provide liquid for conveying the filling to the connecting pipe 15, thereby facilitating liquid filling. The upper surface of the filling machine body 18 is fixedly connected to the lower surface of a cylinder 12. The filling machine body 18 provides support for the cylinder 12, facilitating the operation of the cylinder 12.

[0043] Working principle: During filling, as the liquid flows out of the filling head 1, it first contacts the buffer block 207, applying downward pressure to the buffer block 207. This compresses the second spring 206, reducing the impact of the falling liquid and pushing the movable block 202 downward. The first spring 201 is compressed, connecting the inside of the filling head 1 with the movable groove 101, thus enabling liquid filling. After filling is completed, the liquid delivery stops, and the liquid output pressure decreases. Under the elastic force of the first spring 201, the movable block 202 rises, connecting the blocking chute 205 with the top of the movable groove 101, thereby blocking the inside and outside of the filling head 1.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 backflow prevention dosing head comprising a dosing head (1), characterized in that: The inner surface of the filling head (1) is provided with a movable groove (101), the inside of the filling head (1) is provided with a blocking component (2), the blocking component (2) comprises a first spring (201), the lower end of the first spring (201) is fixedly connected with the inner bottom surface of the movable groove (101), the upper end of the first spring (201) is fixedly connected with a movable block (202), the outer surface of the movable block (202) is fixedly connected with a limiting block (203), the inner surface of the movable groove (101) is provided with a limiting groove (204), the outer surface of the limiting block (203) is movably connected with the inside of the limiting groove (204), the upper surface of the movable block (202) is provided with a blocking inclined groove (205), the upper surface of the movable block (202) is fixedly connected with a second spring (206), the upper end of the second spring (206) is fixedly connected with a buffer block (207), and the upper surface of the buffer block (207) is provided with a buffer inclined groove (208).

2. A backflow resistant dosing filler head according to claim 1, characterized in that: The outer surface of the filling head (1) is fixedly connected with a fixed ring (3), the outer surface of the filling head (1) is provided with a first mounting seat (4), the side surface of the first mounting seat (4) is provided with a first mounting groove (5), the inside of the first mounting groove (5) is movably connected with the outer surface of the fixed ring (3), and the side surface of the first mounting seat (4) is provided with a threaded hole (6).

3. A backflow resistant dosing filler head according to claim 1, characterized in that: The outer surface of the filling head (1) is provided with a second mounting seat (7), the side surface of the second mounting seat (7) is provided with a second mounting groove (8), the inside of the second mounting groove (8) is movably connected with the outer surface of the fixed ring (3), the side surface of the second mounting seat (7) is provided with a through hole (9), the inside of the through hole (9) is threadedly connected with a bolt (10), and one end of the bolt (10) is threadedly connected with the inside of the threaded hole (6).

4. A backflow resistant dosing filler head according to claim 2, characterized in that: The side surface of the first mounting seat (4) is fixedly connected with a connecting plate (11), and the lower portion of the connecting plate (11) is provided with an air cylinder (12).

5. A backflow resistant dosing filler head according to claim 1, characterized in that: The upper surface of the filling head (1) is fixedly connected with a fixed seat (13), and the upper surface of the fixed seat (13) is provided with a clamping groove (14).

6. A backflow resistant dosing head according to claim 5, characterized in that: The inside of the fixed seat (13) is provided with a connecting pipe (15), the outer surface of the connecting pipe (15) is fixedly connected with a clamping ring (16), the lower end of the clamping ring (16) is movably connected with the inside of the clamping groove (14), the outer surface of the connecting pipe (15) is movably connected with a rotating block (17), and the inner surface of the rotating block (17) is threadedly connected with the outer surface of the fixed seat (13).

7. A liquid filling machine characterised in that: A backflow prevention quantitative filling head is provided, which comprises a filling machine body (18) and any one of the backflow prevention quantitative filling heads according to claims 1-6, one end of the connecting pipe (15) is fixedly connected with the side surface of the filling machine body (18), and the upper surface of the filling machine body (18) is fixedly connected with the lower surface of the air cylinder (12).

Images