Anti-drip-irrigation filling head of ointment filling machine
By designing an anti-drip filling head for the ointment filling machine, and utilizing the combination of inner and outer cylinders and elastic springs, the problem of dripping during the ointment filling process is solved, achieving efficient filling and meeting hygiene requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN DONGJI HEALTH MANAGEMENT CONSULTING CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-15
AI Technical Summary
Existing ointment filling machines are prone to dripping during the filling process, resulting in ointment residue and contamination. The existing technical solutions are not suitable for industrial production.
A drip-proof filling head for an ointment filling machine was designed. By using the inner and outer cylinders in combination, and utilizing the different elastic coefficients of the elastic springs, the flow interruption and negative pressure state during the filling process are achieved, reducing the residue at the outlet.
It achieves flow interruption during ointment filling, reduces residue at the outlet, improves filling efficiency, and meets hygiene requirements.
Smart Images
Figure CN224241398U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filling equipment technology, and in particular to an anti-drip filling head for a medicated ointment filling machine. Background Technology
[0002] After the ointment is processed, it needs to be filled. During the filling process, when switching between two bottles, some liquid drips from the filling head after the inlet valve is closed. This results in some liquid remaining at the filling head outlet, dripping onto the packaging table or the next bottle. If this dripped medicine is not cleaned up in time, it will spoil, contaminate the packaging table or bottle, and also waste liquid. In the prior art, patent document CN221854217U discloses an anti-drip filling head for liquid filling machines, which can prevent liquid from dripping. However, this structure is not suitable for ointments with high viscosity. Patent document CN111847360B discloses a filling head for ointment cosmetics with anti-drip function, but this solution is cumbersome and precise, and is not suitable for large-scale industrial application or workshop production needs.
[0003] To solve the above problems, an anti-drip filling head for ointment filling machines is provided. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, this utility model provides an anti-drip filling head for ointment filling machines, which effectively solves the problem that ointment tends to stick and contaminate at the outlet of the packaging machine after the filling head stops flowing.
[0005] The technical solution includes a discharge cylinder of a filling machine. A vertical central shaft is fixed inside the discharge cylinder by multiple fixing rods. An inner cylinder is fitted onto the central shaft, and the central shaft and inner cylinder are sealed. A first annular protrusion is located on the inner side of the lower end of the central shaft, with a gap between the first annular protrusion and the inner cylinder. An annular plate is fitted onto the inner cylinder, with its edge sealing against the discharge cylinder. A first compression spring is installed between the annular plate and the annular protrusion. The upper end of the inner cylinder is folded outward to form a folded edge, which seals the discharge port when it contacts the annular plate. An outer cylinder is fastened to the lower end of the discharge cylinder. The lower end of the outer cylinder is tapered and fixed to the inner cylinder. A second annular protrusion is located on the outer side of the lower end of the discharge cylinder. A second compression spring is installed between the second annular protrusion and the lower side plate of the outer cylinder, sealing the second annular protrusion against the side wall of the outer cylinder. The lower end of the inner cylinder has multiple small holes, through which the outer cylinder and the inner cylinder communicate.
[0006] Preferably, the elastic coefficient of the second compression spring is much greater than that of the first spring.
[0007] Preferably, the outer edges of the annular plate and the second annular protrusion are both provided with sealing rings.
[0008] This invention has a clever structure that enables flow interruption during the filling process, while reducing residue at the filling head outlet, thus greatly improving filling efficiency and meeting hygiene requirements. Attached Figure Description
[0009] Figure 1 This is a three-dimensional drawing of the present invention.
[0010] Figure 2 This is a front sectional view of the present invention in its initial state.
[0011] Figure 3 This is a front sectional view of the present invention during the canning process. Detailed Implementation
[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.
[0013] Depend on Figures 1 to 3 The present invention includes a discharge cylinder 1 of a filling machine. A vertical central shaft 2 is fixed inside the discharge cylinder 1 by multiple fixing rods. An inner cylinder 3 is fitted onto the central shaft 2, and the central shaft 2 and the inner cylinder 3 are sealed together. A first annular protrusion 4 is located on the inner side of the lower end of the central shaft 2, and there is a gap between the first annular protrusion 4 and the inner cylinder 3. An annular plate 5 is fitted onto the inner cylinder 3, and the edge of the annular plate 5 is sealed to the discharge cylinder 1. A first compression spring 6 is installed between the annular plate 5 and the annular protrusion. The upper end is folded outward to form a folded edge, which can block the discharge port when it contacts the annular plate 5; the lower end of the discharge cylinder 1 is fitted with an outer cylinder 7, the lower end of the outer cylinder 7 is conical and fixed together with the inner cylinder 3, the lower outer side of the discharge cylinder 1 has a second annular protrusion 8, a second compression spring 9 is installed between the second annular protrusion 8 and the lower side plate of the outer cylinder 7, and the second annular protrusion 8 is sealed with the side wall of the outer cylinder 7, the lower end of the inner cylinder 3 has multiple small holes 10, and the outer cylinder 7 and the inner cylinder 3 are connected through the small holes 10.
[0014] The elastic coefficient of the second compression spring 9 is much greater than that of the first spring.
[0015] The outer edges of the annular plate 5 and the second annular protrusion 8 are both provided with sealing rings.
[0016] It is worth noting that in this scheme, the ointment flows from the discharge cylinder 1 through the space between the annular plate 5 and the first annular protrusion 4, then flows down into the cavity of the outer cylinder 7 through the gap between the inner cylinder 3 and the discharge cylinder 1, and finally flows into the container through the small hole 10.
[0017] In the initial state, such as Figure 2 As shown, at this time, under the action of the second compression spring 9, both the outer cylinder 7 and the inner cylinder 3 are pressed downwards. At this time, the first compression spring 6 is compressed, and the annular plate 5 and the first annular protrusion 4 seal the discharge cylinder 1; when canning is required, such as Figure 3As shown, at this time, the outer cylinder 7 is pushed upward by the container opening until the first annular protrusion 4 and the annular plate 5 are completely separated, and then normal filling is carried out.
[0018] After filling is completed, the container is removed, and the outer cylinder 7 returns to its original position under the action of the second compression spring 9. During this process, the first annular protrusion 4 contacts the annular plate 5 first, and the feeding of material into the cavity of the outer cylinder 7 has stopped. The outer cylinder 7 continues to move downward. During the downward movement of the outer cylinder 7, the central shaft 2 remains fixed, which creates a negative pressure state inside the inner cylinder 3, causing the ointment at the small hole 10 to be sucked upward and will not fall off in a short time, which is enough to support the arrival of the next container.
[0019] Of course, in order to increase the negative pressure effect inside the inner cylinder 3, the lower end of the inner cylinder 3 can be made into a constricted shape, so as to ensure that the ointment residue will not drip after filling.
[0020] This invention has a clever structure that enables flow interruption during the filling process, while reducing residue at the filling head outlet, thus greatly improving filling efficiency and meeting hygiene requirements.
Claims
1. A drip-proof filling head for an ointment filling machine, characterized in that, The filling machine includes a discharge cylinder (1), inside which a vertical central shaft (2) is fixed by multiple fixing rods. An inner cylinder (3) is fitted on the central shaft (2), and the central shaft (2) and the inner cylinder (3) are sealed. There is a first annular protrusion (4) on the inner side of the lower end of the central shaft (2), and there is a gap between the first annular protrusion (4) and the inner cylinder (3). An annular plate (5) is fitted on the inner cylinder (3), and the edge of the annular plate (5) is sealed with the discharge cylinder (1). A first compression spring (6) is installed between the annular plate (5) and the annular protrusion. The upper end of the inner cylinder (3) faces... The outer edge is folded outward to form a folded edge. When the folded edge contacts the annular plate (5), it can block the discharge port. The lower end of the discharge cylinder (1) is fitted with an outer cylinder (7). The lower end of the outer cylinder (7) is conical and fixed together with the inner cylinder (3). There is a second annular protrusion (8) on the outer side of the lower end of the discharge cylinder (1). A second compression spring (9) is installed between the second annular protrusion (8) and the lower side plate of the outer cylinder (7). The second annular protrusion (8) is sealed with the side wall of the outer cylinder (7). The lower end of the inner cylinder (3) has multiple small holes (10). The outer cylinder (7) and the inner cylinder (3) are connected through the small holes (10).
2. The anti-drip filling head for an ointment filling machine according to claim 1, characterized in that, The elastic coefficient of the second compression spring (9) is much greater than that of the first spring.
3. The anti-drip filling head for an ointment filling machine according to claim 1, characterized in that, The outer edges of the annular plate (5) and the second annular protrusion (8) are both provided with sealing rings.