Multifunctional drip-proof filling head

Abstract

The utility model relates to fluid filling equipment technical field, concretely to a multifunctional drip-proof filling head, including valve main body, filling nozzle, sealing rod, valve core guide rod and cylinder, valve core guide rod is located in the valve main body, its upper end is connected with the piston rod of cylinder through elastic pin structure, its lower end and the upper end of sealing rod adopt the joint structure connection of horizontal slide, the elastic pin structure includes quick -mounting joint, quick -joint locating pin and positioning spring, is equipped with V -groove on quick -joint locating pin, the upper end of valve core guide rod is equipped with annular groove, the lower part of V -groove and annular groove joint cooperation, press quick -joint locating pin to make V -groove and annular groove separate to unlock valve core guide rod, when releasing, V -groove and annular groove joint to lock valve core guide rod under the action of positioning spring, the utility model discloses compact structure, convenient to assemble and disassemble, reliable sealing, applicable to a variety of filling specifications, has improved filling efficiency and operation convenience significantly.

Description

Technical Field

[0001] This utility model relates to the field of fluid filling equipment technology, specifically a multi-functional anti-drip filling head. Background Technology

[0002] In the liquid filling process, the filling head is a key component that directly contacts the material. Its sealing performance, ease of replacement, and positioning accuracy directly affect filling efficiency and product quality. Currently, most common filling heads use an O-ring seal structure, requiring pre-tightening force during installation and involving complex disassembly. Furthermore, replacing different specifications of filling rods requires complete disassembly of the valve core guide rod, making the operation cumbersome and demanding high operator skills. In addition, traditional filling heads are prone to dripping after filling, affecting cleanliness and material utilization. Due to their small size and limited installation space, filling heads require specialized tools and require limited space for disassembly. The small thread specifications mean that frequent disassembly may damage the fixing threads, and dimensional control during installation is difficult. The coaxiality of the rigid connection of the threads cannot be guaranteed each time, and each disassembly carries the potential risk of contaminating the filling liquid. Therefore, there is an urgent need for a multi-functional filling head that is compact, reliably sealed, easy to replace, and drip-proof, to improve filling efficiency, adapt to multi-specification production needs, and reduce maintenance costs and operational complexity. Utility Model Content

[0003] The purpose of this utility model is to provide a solution to the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional anti-drip filling head, comprising a valve body, a filling nozzle, a sealing rod, a valve core guide rod, and a cylinder. The two ends of the valve body are respectively connected to the cylinder and the filling nozzle. The sealing rod is slidably disposed within the filling nozzle. The valve core guide rod is disposed within the valve body, its upper end connected to the piston rod of the cylinder via an elastic pin structure, and its lower end connected to the upper end of the sealing rod via a horizontally slidable snap-fit ​​structure. The elastic pin structure includes a quick-connect coupling... The quick-connect coupling includes a positioning pin and a positioning spring. The positioning pin is elastically positioned inside the quick-connect coupling by the positioning spring and is perpendicular to the valve core guide rod. The positioning pin has a V-groove, and the upper end of the valve core guide rod has an annular groove. The lower part of the V-groove engages with the annular groove. Pressing the positioning pin disengages the V-groove from the annular groove to unlock the valve core guide rod. When released, the positioning pin engages with the annular groove under the action of the positioning spring to lock the valve core guide rod.

[0005] Preferably, it also includes a cylinder mounting base, which is connected to the top of the valve body, and the cylinder body is connected to the cylinder mounting base.

[0006] Preferably, the cylinder mounting base is provided with a through hole for the valve core guide rod to pass through, and the quick-connect coupling is disposed inside the cylinder mounting base.

[0007] Preferably, the quick-connect coupling includes a base, the base having a channel through which the valve core guide rod passes, and the end of the quick-connect coupling away from the base is connected to the piston rod of the cylinder via a connector.

[0008] Preferably, the snap-fit ​​structure includes a T-shaped groove at the lower end of the valve core guide rod and a protrusion at the upper end of the sealing rod. The inner diameter of the T-shaped groove is larger than the outer diameter of the protrusion, and the protrusion can slide along the horizontal direction of the T-shaped groove to realize the engagement or separation of the valve core guide rod and the sealing rod.

[0009] Preferably, a star-shaped sealing ring is fitted in the middle of the valve core guide rod, and the outer diameter of the star-shaped sealing ring is interference-fitted with the inner wall of the valve body.

[0010] Preferably, the lower end of the valve body is connected to the upper end of the filling nozzle by a thread, and an O-ring is provided at the threaded joint surface of the two.

[0011] Preferably, a speed regulating valve is provided in the piston movement air path of the cylinder.

[0012] Preferably, the outer diameter of the star-shaped sealing ring is 13.95±0.05mm and the thickness is 2.62±0.05mm.

[0013] Preferably, the outer diameter of the O-ring is 30±0.1mm and the wire diameter is 3.5±0.1mm.

[0014] Compared with existing technologies, this utility model provides a multi-functional anti-drip filling head with the following advantages: Through optimized structural design, this utility model offers a multi-functional anti-drip filling head with convenient assembly and disassembly, reliable sealing, and wide applicability. Its elastic pin structure enables quick unlocking and locking of the valve core guide rod, significantly improving replacement efficiency; the horizontal sliding snap-fit ​​structure allows easy separation of the sealing rod and valve core guide rod, facilitating adaptation to different filling specifications; the star-shaped sealing ring ensures dynamic sealing while reducing frictional resistance and extending service life; the O-ring seal ensures static sealing between the valve body and the filling nozzle, preventing leakage; the speed regulating valve adjusts the cylinder's movement speed, further controlling the smoothness of the filling process. The overall structure is compact and easy to operate, significantly reducing the skill requirements for operators and making it suitable for high-frequency, multi-specification filling production environments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the working structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of AA section in the middle;

[0018] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0019] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0020] Figure 6 This is a structural diagram of the present invention with the cylinder mounting base and valve body concealed.

[0021] Figure 7 This is a cross-sectional schematic diagram of the positioning pin of the quick-connect coupling of this utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the cylinder fixing seat and the elastic pin of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. Filling nozzle; 3. Sealing rod; 31. Protrusion; 4. Valve core guide rod; 41. Annular groove; 5. Cylinder; 6. Elastic pin structure; 61. Quick-connect coupling; 611. Base; 612. Channel; 62. Quick-connect coupling positioning pin; 621. V-groove; 63. Positioning spring; 7. Snap-fit ​​structure; 71. T-groove; 8. Cylinder fixing seat; 81. Through hole; 82. Hollowed-out part; 10. Star-shaped sealing ring; 11. O-ring sealing ring; 12. Speed ​​control valve. Detailed Implementation

[0024] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:

[0025] like Figure 1-8 As shown, this utility model provides a multifunctional anti-drip filling head, including a valve body 1, a filling nozzle 2, a sealing rod 3, a valve core guide rod 4, a cylinder 5, and a cylinder fixing seat 8. The cylinder 5 and the filling nozzle 2 are respectively connected to both ends of the valve body 1. The cylinder fixing seat 8 is connected to the top of the valve body 1, and the cylinder body of the cylinder 5 is connected to the cylinder fixing seat 8. The cylinder fixing seat 8 is used to fix the cylinder body of the cylinder 5, ensuring its alignment and stable connection with the valve body 1. The lower end of the valve body 1 and the upper end of the filling nozzle 2 are connected by threads. An O-ring seal 11 is provided at the threaded joint surface of the two. The outer diameter of the O-ring seal 11 is 30±0.1mm, and the wire diameter is 3.5±0.1mm, to achieve a reliable static seal and prevent liquid leakage during the filling process.

[0026] The sealing rod 3 is slidably installed inside the filling nozzle 2, and its lower end engages with the outlet of the filling nozzle 2. It controls the flow of liquid by moving up and down to prevent dripping. The valve core guide rod 4 is installed inside the valve body 1. Its upper end is connected to the piston rod of the cylinder 5 through an elastic pin structure 6, and its lower end is connected to the upper end of the sealing rod 3 by a horizontally sliding snap-fit ​​structure 7.

[0027] The elastic pin structure 6 includes a quick-connect coupling 61, a quick-connect coupling positioning pin 62, and a positioning spring 63. The quick-connect coupling positioning pin 62 is elastically set inside the quick-connect coupling 61 by the positioning spring 63, and the quick-connect coupling positioning pin 62 is perpendicular to the valve core guide rod 4. The quick-connect coupling positioning pin 62 is provided with a V-groove 621, and the upper end of the valve core guide rod 4 is provided with an annular groove 41. The lower part of the V-groove 621 is engaged with the annular groove 41. Pressing the quick-connect coupling positioning pin 62 disengages the V-groove 621 from the annular groove 41 to unlock the valve core guide rod 4, facilitating quick disassembly. When the quick-connect coupling positioning pin 62 is released, the V-groove 621 engages with the annular groove 41 under the action of the positioning spring 63 to lock the valve core guide rod 4.

[0028] The cylinder mounting base 8 includes a through hole 81 for the valve core guide rod 4 to pass through and an annular hollow portion 82. The quick-connect connector 61 is disposed in the hollow portion 82 of the cylinder mounting base 8. The quick-connect connector 61 includes a base 611, the base 611 is provided with a channel 612 for the valve core guide rod 4 to pass through, and the end of the quick-connect connector 61 away from the base 611 is connected to the piston rod of the cylinder 5 through a connector.

[0029] The snap-fit ​​structure 7 includes a T-shaped groove 71 at the lower end of the valve core guide rod 4 and a protrusion 31 at the upper end of the sealing rod 3. The inner diameter of the T-shaped groove 71 is larger than the outer diameter of the protrusion 31. The protrusion 31 can slide along the horizontal direction of the T-shaped groove 71 to realize the engagement or separation of the valve core guide rod 4 and the sealing rod 3, which facilitates the replacement of sealing rods of different specifications.

[0030] A star-shaped sealing ring 10 is fitted in the middle of the valve core guide rod 4. The outer diameter of the star-shaped sealing ring 10 is 13.95±0.05mm and the thickness is 2.62±0.05mm. The outer diameter of the star-shaped sealing ring 10 is interference-fitted with the inner wall of the valve body 1, which not only ensures the sealing performance during movement but also reduces friction during movement and extends the service life.

[0031] A speed regulating valve 12 is installed in the piston movement air path of cylinder 5. The speed regulating valve 12 is used to adjust the movement speed of the cylinder piston, thereby controlling the stability of the filling process.

[0032] The operation process is as follows:

[0033] Normal filling process:

[0034] Cylinder 5 pushes valve core guide rod 4 downward, which drives sealing rod 3 to move downward through snap-fit ​​structure 7, opening the outlet of filling nozzle 2 and allowing liquid to flow out; when cylinder 5 retracts, sealing rod 3 moves upward to close the outlet, effectively preventing dripping.

[0035] Procedure for replacing a sealing rod (taking the replacement of a sealing rod of different specifications as an example):

[0036] Pressing the quick-connect fitting positioning pin 62 causes the valve core guide rod 4 to be positioned above the V-groove 621, which is wider at the top and narrower at the bottom. The inner diameter of the upper part of the V-groove 621 is larger than that of the lower part. After the quick-connect fitting positioning pin 62 moves downward, the valve core guide rod 4 is positioned above the V-groove 621, causing the lower part of the V-groove 621 to disengage from the annular groove 41 of the valve core guide rod 4, thus releasing the lock. The valve core guide rod 4 and the sealing rod 3 are then removed from the valve body 1 as a whole. The sealing rod 3 is then slid horizontally, causing its protrusion 31 to slide out of the T-groove 71 of the valve core guide rod 4, thus completing the locking mechanism. Separate the valve core guide rod; take a new sealing rod of the required specifications, align its protrusion 31 with the T-groove 71, and push it horizontally until it is locked in place; reinstall the assembled valve core guide rod 4 and sealing rod 3 into the valve body 1, ensuring that the upper end of the valve core guide rod 4 passes through the through hole 81 of the cylinder fixing seat 8 and extends into the channel 612 of the quick-connect coupling 61; release the quick-connect coupling positioning pin 62, and under the action of the positioning spring 63, the quick-connect coupling positioning pin 62 automatically returns to its original position, and the lower part of the V-groove 621 is re-locked into the annular groove 41 of the valve core guide rod 4, completing the locking.

[0037] Sealing ring replacement and maintenance:

[0038] If the star-shaped sealing ring 10 or the O-ring 11 is worn, the valve core guide rod 4 or the filling nozzle 2 can be removed and replaced respectively. The operation is simple, requires no professional tools, and significantly reduces maintenance costs and time.

[0039] This invention utilizes a combination of an elastic pin structure and a snap-fit ​​structure to achieve rapid disassembly and replacement of the valve core guide rod and sealing rod, significantly improving replacement efficiency and reducing the skill requirements for operators. The dual sealing design of a star-shaped sealing ring and an O-ring ensures reliable dynamic and static sealing, preventing liquid leakage. The introduction of a speed control valve further optimizes the control performance of the filling process, making it suitable for liquid filling equipment in various industries such as beverages, daily chemicals, and pharmaceuticals.

[0040] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A multifunctional anti-drip filling head, characterized in that: The valve body (1) includes a filling nozzle (2), a sealing rod (3), a valve core guide rod (4), and a cylinder (5). The two ends of the valve body (1) are respectively connected to the cylinder (5) and the filling nozzle (2). The sealing rod (3) is slidably disposed in the filling nozzle (2). The valve core guide rod (4) is disposed in the valve body (1). Its upper end is connected to the piston rod of the cylinder (5) through an elastic pin structure (6), and its lower end is connected to the upper end of the sealing rod (3) by a horizontally sliding snap-fit ​​structure (7). The elastic pin structure (6) includes a quick-connect connector (61), a quick-connect connector positioning pin (62), and a positioning spring (63). The quick-connect connector positioning pin (62) is... The quick-connector is elastically set in the quick-connector (61) by the positioning spring (63), and the quick-connector positioning pin (62) is set perpendicular to the valve core guide rod (4). The quick-connector positioning pin (62) is provided with a V-groove (621), and the upper end of the valve core guide rod (4) is provided with an annular groove (41). The lower part of the V-groove (621) is engaged with the annular groove (41). Pressing the quick-connector positioning pin (62) causes the V-groove (621) to disengage from the annular groove (41) to unlock the valve core guide rod (4). When the quick-connector positioning pin (62) is released, the V-groove (621) and the annular groove (41) are engaged under the action of the positioning spring (63) to lock the valve core guide rod (4).

2. The multifunctional anti-drip filling head according to claim 1, characterized in that: It also includes a cylinder mounting base (8), which is connected to the top of the valve body (1), and the cylinder body of the cylinder (5) is connected to the cylinder mounting base (8).

3. The multifunctional anti-drip filling head according to claim 2, characterized in that: The cylinder mounting base (8) is provided with a through hole (81) through which the valve core guide rod (4) passes, and the quick-connect fitting (61) is located inside the cylinder mounting base (8).

4. The multifunctional anti-drip filling head according to claim 3, characterized in that: The quick-connector (61) includes a base (611) with a channel (612) through which the valve core guide rod (4) passes. The end of the quick-connector (61) away from the base (611) is connected to the piston rod of the cylinder (5) via a connector.

5. The multifunctional anti-drip filling head according to claim 1, characterized in that: The snap-fit ​​structure (7) includes a T-shaped groove (71) at the lower end of the valve core guide rod (4) and a protrusion (31) at the upper end of the sealing rod (3). The inner diameter of the T-shaped groove (71) is larger than the outer diameter of the protrusion (31). The protrusion (31) can slide along the horizontal direction of the T-shaped groove (71) to realize the engagement or separation of the valve core guide rod (4) and the sealing rod (3).

6. The multifunctional anti-drip filling head according to claim 1, characterized in that: A star-shaped sealing ring (10) is fitted in the middle of the valve core guide rod (4), and the outer diameter of the star-shaped sealing ring (10) is interference-fitted with the inner wall of the valve body (1).

7. The multifunctional anti-drip filling head according to claim 1, characterized in that: The lower end of the valve body (1) is connected to the upper end of the filling nozzle (2) by a thread, and an O-ring (11) is provided at the threaded joint surface of the two.

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