Drip-proof material nozzle of filling machine

Abstract

The utility model provides a drip-proof material nozzle of a filling machine, which comprises a material pipe, a sealing head, a connecting rod, a telescopic rod and an air extracting pump, the bottom of the material pipe is of a conical structure, the top of the material pipe is provided with an inclined section, the sealing head is of a conical structure, the taper of the sealing head is consistent with that of the bottom of a hopper, and the connecting rod is connected with the telescopic rod. The sealing head is arranged at the bottom of the inner side of the material pipe and is coaxial with the material pipe, a fixed section of the telescopic rod is fixed to the upper portion of the outer portion of the material pipe, a movable section of the telescopic rod downwards penetrates through the top of the material pipe and then is fixedly connected with the sealing head, the movable section is connected with the top of the material pipe in a sealed mode, and a first channel is formed in the movable section. A second channel is arranged at the bottom of the conical surface of the sealing head in a surrounding mode, the first channel is communicated with the second channel, and a connector extending to the outside of the material pipe is arranged at the top of the second channel. According to the utility model, the problem of dripping leakage of the material nozzle is solved, and dripping leakage pollution is avoided.

Description

Technical Field

[0001] This utility model relates to the field of filling equipment, and in particular to an anti-drip nozzle for a filling machine. Background Technology

[0002] In the automated production processes of food, pharmaceuticals, and daily chemical products, the filling machine, as a core piece of equipment, directly impacts product quality and production efficiency through the sealing performance of its nozzle. Traditional filling machine nozzles commonly suffer from dripping problems, especially in viscous materials or high-precision filling scenarios. Analysis reveals the following key technical deficiencies: Existing nozzles often employ a flat or simple conical sealing design. Due to processing precision and wear factors, achieving a perfect seal between the sealing surfaces is difficult, leading to the formation of tiny gaps. When the filling valve closes, material remaining on the inner wall of the nozzle easily seeps slowly through these gaps due to gravity or surface tension, causing dripping contamination. Traditional nozzles lack an effective mechanism for removing residual material. After filling, a small amount of material easily adheres to the conical tube wall. During subsequent equipment movement or air pressure fluctuations, the residue detaches due to inertia or negative pressure, resulting in random dripping. Therefore, optimization of existing nozzles is necessary. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an anti-drip nozzle for a filling machine, which solves the problem of dripping from existing nozzles.

[0004] According to an embodiment of this utility model, an anti-drip nozzle for a filling machine includes a material pipe, a sealing head, a connecting rod, a telescopic rod, and an air pump. The bottom of the material pipe is conical, and the top of the material pipe has an inclined section. The sealing head is conical, and the taper of the sealing head is the same as the taper of the bottom of the material pipe. The sealing head is located on the inner bottom of the material pipe and is coaxial with the material pipe. The fixed section of the telescopic rod is fixed to the upper outer side of the material pipe, and the movable section of the telescopic rod passes downward through the top of the material pipe and is fixedly connected to the sealing head. The movable section is sealed to the top of the material pipe. A first channel is provided inside the movable section, and a second channel is provided around the bottom of the conical surface of the sealing head. The first channel and the second channel are connected. The top of the second channel has an interface extending to the outside of the material pipe. A flexible hose is provided between the air pump and the interface. The top of the sealing head has a chamfer, and the outlet of the second channel is located in the chamfered area.

[0005] The technical principle of this utility model is as follows: This anti-drip nozzle drives the conical sealing head and the conical material tube to open and close through the telescopic rod. The air pump forms a negative pressure in the chamfered area of ​​the sealing head through the first and second channels, adsorbs the residual material and discharges it, so as to achieve zero dripping after filling.

[0006] Preferably, the outlet of the second channel is directly opposite the lowest point of the feed tube.

[0007] Preferably, a guide sleeve is provided at the center of the bottom of the material tube, and several connecting rods are arranged around the guide sleeve and the material tube.

[0008] Preferably, a sealing sleeve is fixedly provided at the top center of the material tube, and a first sealing ring is provided inside the sealing sleeve. The sealing sleeve and the movable section of the telescopic rod are fitted with a clearance.

[0009] Preferably, a second sealing ring is provided on the upper part of the conical surface of the sealing head.

[0010] Preferably, the air inlet of the air pump is equipped with a filter.

[0011] Preferably, the conical surface of the sealing head is provided with a rubber layer.

[0012] Compared to existing technologies, this invention offers the following advantages: The tapered sealing head forms a line contact seal with the feed tube, and the chamfered top design allows the vacuum pump to create a negative pressure adsorption zone at the edge of the sealing surface via the second channel. This thoroughly removes residual material from the bottom of the tube after filling, eliminating the dripping problem caused by surface tension in traditional nozzles. After the telescopic rod drives the sealing head to open and close, the first channel remains connected to the vacuum system. By adjusting the air pressure inside the tube in real time, material splashing or siphoning caused by sudden pressure changes is avoided, making it particularly suitable for filling carbonated beverages or high-viscosity materials. The coaxial positioning system formed by the guide sleeve and connecting rod ensures the smooth movement of the sealing head, resulting in improved filling accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the second channel of this utility model.

[0015] In the above attached figures: 1. Material pipe; 2. Inclined section; 3. Sealing head; 4. Telescopic rod; 5. First channel; 6. Second channel; 7. Second sealing ring; 8. Guide sleeve; 9. Connecting rod; 10. Air pump; 11. Filter; 12. Connecting frame; 13. Hoses. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1As shown in the figure, this utility model embodiment proposes an anti-drip nozzle for a filling machine, including a material pipe 1, a sealing head 3, a connecting rod 9, a telescopic rod 4, and a vacuum pump 10. The bottom of the material pipe 1 is conical, and the top of the material pipe 1 is provided with an inclined section 2, the top of which is connected to the feeding device. The sealing head 3 is conical, and the taper of the sealing head 3 is consistent with the taper of the bottom of the hopper. The sealing head 3 is located on the inner bottom of the material pipe 1 and is coaxial with the material pipe 1. The fixed section of the telescopic rod 4 is fixed to the upper outer side of the material pipe 1, and the movable section of the telescopic rod 4 passes downward through the top of the material pipe 1 and is fixedly connected to the sealing head 3. The movable section is sealed to the top of the material pipe 1. The interior of the movable section is provided with a first channel 5, and the bottom of the conical surface of the sealing head 3 is surrounded by a second channel 6. The first channel 5 and the second channel 6 are connected. The top of the second channel 6 is provided with an interface extending to the outside of the material pipe 1. A flexible hose 13 is provided between the vacuum pump 10 and the interface. The top of the sealing head 3 is chamfered, and the outlet of the second channel 6 is located in the chamfered area. The anti-drip nozzle of this invention uses a telescopic rod 4 to drive the sealing head 3 up and down, thus opening and closing the conical hole at the bottom of the material tube 1. During filling, the sealing head 3 moves upward to open the channel; at the end, the sealing head 3 moves downward to close the conical surface. Simultaneously, the vacuum pump 10 draws residual liquid from the chamfered area through the first channel 5 inside the telescopic rod 4 and the second channel 6 on the conical surface of the sealing head 3, achieving instantaneous negative pressure back suction. The double-stage sealing of the conical surface and the sealing ring ensures zero leakage, and the outlet in the chamfered area precisely adsorbs residual droplets, resulting in a high back suction rate and completely eliminating dripping pollution. In this embodiment, the fixed section of the telescopic rod 4 is fixedly connected to the inclined section 2 via a connecting frame 12. The telescopic rod 4 is a pneumatic structure.

[0018] Preferably, the outlet of the second channel 6 is directly opposite the lowest point of the feed pipe 1. This direct alignment of the outlet of the second channel 6 with the lowest point of the feed pipe 1 allows for precise suction of residual liquid collected at that location, improving the efficiency of negative pressure back suction.

[0019] Preferably, a guide sleeve 8 is provided at the center of the bottom of the material tube 1, and several connecting rods 9 are arranged around the guide sleeve 8 and the material tube 1. The guide sleeve 8 is fixed to the center of the bottom of the material tube 1 through the connecting rods 9, providing axial guidance for the movable section of the telescopic rod 4 and ensuring the coaxial accuracy between the sealing head 3 and the tapered hole of the material tube 1.

[0020] Preferably, a sealing sleeve 14 is fixedly installed at the top center of the material pipe 1, and a first sealing ring is provided inside the sealing sleeve 14. The sealing sleeve 14 and the movable section of the telescopic rod 4 are in clearance fit. The sealing sleeve 14, through the clearance fit between the built-in first sealing ring and the movable section of the telescopic rod 4, achieves the dual functions of dynamic sealing and axial guidance, preventing material leakage along the rod.

[0021] Preferably, a second sealing ring 7 is provided on the upper part of the conical surface of the sealing head 3. The second sealing ring 7 is provided on the upper part of the conical surface of the sealing head 3 to elastically compensate for the clearance of the conical surface, thereby achieving double sealing protection and preventing minor leakage.

[0022] Preferably, the air inlet of the air pump 10 is provided with a filter 11. The filter 11 is located at the air inlet of the air pump 10 to intercept impurities drawn in, avoid damage to the pump body and negative pressure attenuation, and ensure long-term operation of the system.

[0023] Preferably, the conical surface of the sealing head 3 is provided with a rubber layer. The rubber layer covering the conical surface of the sealing head 3 tightly conforms to the conical surface of the material tube 1 through elastic deformation, compensating for processing errors and achieving zero-gap sealing.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A drip-proof nozzle for a filling machine, characterized in that: The system includes a material pipe (1), a sealing head (3), a connecting rod (9), a telescopic rod (4), and a vacuum pump (10). The bottom of the material pipe (1) is tapered, and the top of the material pipe (1) is provided with an inclined section (2). The sealing head (3) is conical, and the taper of the sealing head (3) is the same as the taper of the bottom of the material pipe. The sealing head (3) is located at the bottom of the inner side of the material pipe (1) and is coaxial with the material pipe (1). The fixed section of the telescopic rod (4) is fixed to the upper outer side of the material pipe (1), and the movable section of the telescopic rod (4) passes downward through the material pipe (1). The top of the sealing head (3) is fixedly connected to the top of the material tube (1), and the movable section is sealed to the top of the material tube (1). The movable section is provided with a first channel (5), and the bottom of the conical surface of the sealing head (3) is provided with a second channel (6). The first channel (5) and the second channel (6) are connected. The top of the second channel (6) is provided with an interface extending to the outside of the material tube (1). A hose (13) is provided between the air pump (10) and the interface. The top of the sealing head (3) is provided with a chamfer, and the outlet of the second channel (6) is located in the chamfer area.

2. The anti-drip nozzle of a filling machine as described in claim 1, characterized in that: The outlet of the second channel (6) is directly opposite the lowest point of the feed tube (1).

3. The anti-drip nozzle of a filling machine as described in claim 1, characterized in that: A guide sleeve (8) is provided at the center of the bottom of the material tube (1), and several connecting rods (9) are arranged around the guide sleeve (8) and the material tube (1).

4. The anti-drip nozzle of a filling machine as described in claim 1, characterized in that: A sealing sleeve (14) is fixedly provided at the top center of the material tube (1), and a first sealing ring is provided inside the sealing sleeve (14). The sealing sleeve (14) and the movable section of the telescopic rod (4) are fitted with a clearance.

5. The anti-drip nozzle of a filling machine as described in claim 1, characterized in that: The upper part of the conical surface of the sealing head (3) is provided with a second sealing ring (7).

6. The anti-drip nozzle of a filling machine as described in claim 1, characterized in that: The air pump (10) is equipped with a filter (11) at its air inlet.

7. The anti-drip nozzle of a filling machine as described in claim 1, characterized in that: The conical surface of the sealing head (3) is provided with a rubber layer.

Images