Cylinder driven dosing head

Abstract

Cylinder drive type quantitative filling head, including: power drive structure, support installation module, quick disassembly structure, transmission execution system and sealing structure, power drive structure is fixed to the upper end of quick disassembly structure through support installation module, the lower end of support installation module is sealedly connected with the upper end of quick disassembly structure through sealing structure, the lower end of quick disassembly structure is connected with sealing structure, the side end of quick disassembly structure is connected with external feed pipeline, the upper end of transmission execution system is connected with the output end of power drive structure, transmission execution system is arranged in the inner cavity of quick disassembly structure, the inside connection of transmission execution system is provided with sealing structure, and the lower end of transmission execution system is matched with sealing structure to form discharge end sealing.The present application has the advantages of compact structure, simplified sealing ring structure of clamp sealing sleeve, convenient maintenance, double anti-dripping of conical sealing head and micro negative pressure, no linear friction between sealing element and plug rod, eradication of debris problem, and wide adaptation range.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery technology, and more particularly to a cylinder-driven quantitative filling head. Background Technology

[0002] Liquid filling is a crucial step in the production of food, pharmaceuticals, and daily chemicals. As a core component of filling equipment, the performance of the filling head directly determines filling accuracy, production efficiency, and product quality. Currently, filling heads on the market generally suffer from the following problems:

[0003] First, the structure is complex, with most components connected by threads, making disassembly and assembly time-consuming and labor-intensive, daily maintenance inconvenient, and requiring high precision in thread processing and assembly, resulting in high manufacturing costs.

[0004] Second, the sealing method mainly uses a sealing ring structure. The sealing ring is sleeved on the piston rod and moves linearly back and forth with the rod. The two continuously generate sliding friction. The sealing ring wears out quickly and has a short lifespan. The debris generated by the wear will fall off and mix into the material, directly contaminating the product. This is a quality hazard that customers in the food, pharmaceutical and other industries cannot accept. At the same time, after the sealing ring wears out, the gap between the sealing surfaces increases, which easily leads to leakage. The leakage further contaminates the outer wall of the bottle and the surface of the equipment, increasing cleaning costs and downtime losses.

[0005] Third, due to the threaded connection and complex internal structure, disassembly and cleaning are difficult, and thorough disinfection and sterilization are hard to achieve, which cannot meet the strict requirements of the food and pharmaceutical industries for hygienic production.

[0006] Therefore, there is an urgent need for a filling head that is compact, reliably sealed, generates no friction debris from sealing components, and is easy to assemble and disassemble, in order to solve the problems existing in the above-mentioned prior art. Summary of the Invention

[0007] The purpose of this invention is to provide a cylinder-driven quantitative filling head to overcome the above-mentioned shortcomings and deficiencies of the prior art.

[0008] A cylinder-driven quantitative filling head includes: a power drive structure, a support mounting module, a quick-disassembly structure, a transmission execution system, and a sealing structure. The power drive structure is fixed to the upper end of the quick-disassembly structure via the support mounting module. The lower end of the support mounting module is sealed to the upper end of the quick-disassembly structure via the sealing structure. The lower end of the quick-disassembly structure is connected to the sealing structure. The side end of the quick-disassembly structure is connected to an external feed pipe. The upper end of the transmission execution system is connected to the output end of the power drive structure. The transmission execution system passes through the inner cavity of the quick-disassembly structure. A sealing structure is provided at the internal connection of the transmission execution system. The lower end of the transmission execution system cooperates with the sealing structure to form a discharge end seal.

[0009] The sealing structure includes a clamp sealing sleeve and a discharge nozzle. The clamp sealing sleeve is made of food-grade silicone and is disposed between the connection end face of the support installation module and the quick-disassembly structure. The clamp sealing sleeve is disposed between the connection end face of the internal push rod of the transmission execution system. The clamp sealing sleeve is clamped at the docking point of the chuck end face of the quick-disassembly structure. The upper end of the discharge nozzle is connected to the lower end of the quick-disassembly structure, and the outlet of the discharge nozzle is provided with a slope.

[0010] Furthermore, the power drive structure includes a cylinder and an air nozzle. The cylinder is fixed to the upper end of the quick-disassembly structure via a support mounting module. The rod end of the cylinder is connected to the upper end of the transmission execution system. The air nozzle is connected to an external air source and communicates with the hollow channel inside the transmission execution system.

[0011] Furthermore, the support mounting module includes a support rod and a mounting base. The upper end of the support rod is fixedly connected to the cylinder, and the lower end of the support rod is fixed to the upper end of the mounting base. The lower end of the mounting base is a chuck structure. The mounting base is in contact with the upper chuck face of the quick-disassembly structure, and a clamp sealing sleeve is sandwiched between the lower chuck face of the mounting base and the quick-disassembly structure.

[0012] Furthermore, the quick-disassembly structure includes: clamp one, clamp two, clamp three, and a connecting sleeve. The upper end, lower end, and side feed port end of the connecting sleeve are all chuck structures. The upper chuck of the connecting sleeve is connected to the support and installation module through clamp one. A clamp sealing sleeve is sandwiched between the upper chuck surface of the connecting sleeve and the support and installation module. The lower chuck of the connecting sleeve is connected to the feed nozzle through clamp two. The side feed port end chuck of the connecting sleeve is connected to the external feed pipe through clamp three. The inner cavity of the connecting sleeve is connected to the transmission and execution system.

[0013] Furthermore, the transmission execution system includes: a floating joint, a push rod one, and a push rod two. The upper end of the floating joint is connected to the cylinder rod end of the cylinder, and the lower end of the floating joint is connected to the upper end of the push rod one. The upper end of the push rod one is connected to the air nozzle. The push rod one has a hollow channel inside. The lower end of the push rod one is connected to the upper end of the push rod two. A clamp sealing sleeve is clamped between the lower end face of the push rod one and the upper end face of the push rod two. The lower end of the push rod two is provided with a conical sealing head. The outer conical surface of the conical sealing head of the push rod two is matched with the inclined surface of the discharge nozzle outlet. The push rod one and the push rod two pass through the inner cavity of the connecting sleeve.

[0014] The beneficial effects of this invention are:

[0015] This invention features a compact structure, with a simplified sealing ring structure using a clamp sealing sleeve for easy maintenance; a conical sealing head combined with micro-negative pressure provides double anti-drip protection; and the absence of a seal and plug rod with linear friction eliminates debris problems, while also offering quick disassembly, easy cleaning, and wide applicability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0018] Figure label:

[0019] The system includes a power drive structure 100, a support mounting module 200, a quick-release structure 300, a transmission actuator system 400, and a sealing structure 500.

[0020] Cylinder 110 and valve 120.

[0021] Support rod 210 and mounting base 220.

[0022] Clamp 1 310, Clamp 2 320, Clamp 3 330 and Connecting Sleeve 340.

[0023] Floating joint 410, push rod one 420 and push rod two 430.

[0024] Clamp sealing sleeve 510 and discharge nozzle 520. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0026] Example 1

[0027] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0028] like Figure 1-2 As shown, the cylinder-driven quantitative filling head includes: a power drive structure 100, a support mounting module 200, a quick-disassembly structure 300, a transmission execution system 400, and a sealing structure 500. The power drive structure 100 is fixed to the upper end of the quick-disassembly structure 300 through the support mounting module 200. The lower end of the support mounting module 200 is sealed to the upper end of the quick-disassembly structure 300 through the sealing structure 500. The lower end of the quick-disassembly structure 300 is connected to the sealing structure 500. The side end of the quick-disassembly structure 300 is connected to an external feed pipe. The upper end of the transmission execution system 400 is connected to the output end of the power drive structure 100. The transmission execution system 400 passes through the inner cavity of the quick-disassembly structure 300. The internal connection of the transmission execution system 400 is provided with the sealing structure 500. The lower end of the transmission execution system 400 cooperates with the sealing structure 500 to form a discharge end seal.

[0029] The sealing structure 500 includes a clamp sealing sleeve 510 and a discharge nozzle 520. The clamp sealing sleeve 510 is made of food-grade silicone. The clamp sealing sleeve 510 is located between the connection end face of the support mounting module 200 and the quick-disassembly structure 300. The clamp sealing sleeve 510 is located between the connection end faces of the internal push rod of the transmission execution system 400. The clamp sealing sleeve 510 is clamped at the docking point of the chuck end face of the quick-disassembly structure 300. The upper end of the discharge nozzle 520 is connected to the lower end of the quick-disassembly structure 300. The outlet of the discharge nozzle 520 is provided with a slope.

[0030] The power drive structure 100 includes a cylinder 110 and a nozzle 120. The cylinder 110 is fixed to the upper end of the quick-release structure 300 by a support mounting module 200. The rod end of the cylinder 110 is connected to the upper end of the transmission execution system 400. The nozzle 120 is connected to an external air source and is connected to the hollow channel inside the transmission execution system 400.

[0031] The support mounting module 200 includes a support rod 210 and a mounting base 220. The upper end of the support rod 210 is fixedly connected to the cylinder 110, and the lower end of the support rod 210 is fixed to the upper end of the mounting base 220. The lower end of the mounting base 220 is a chuck structure. The mounting base 220 is in contact with the upper chuck face of the quick-release structure 300. A clamp sealing sleeve 510 is sandwiched between the lower chuck face of the mounting base 220 and the quick-release structure 300.

[0032] The quick-disassembly structure 300 includes: clamp one 310, clamp two 320, clamp three 330, and connecting sleeve 340. The upper end, lower end, and side feed port end of the connecting sleeve 340 are all chuck structures. The upper chuck of the connecting sleeve 340 is connected to the support and installation module 200 through clamp one 310. A clamp sealing sleeve 510 is sandwiched between the upper chuck surface of the connecting sleeve 340 and the support and installation module 200. The lower chuck of the connecting sleeve 340 is connected to the feed nozzle 520 through clamp two 320. The side feed port end chuck of the connecting sleeve 340 is connected to the external feed pipe through clamp three 330. The inner cavity of the connecting sleeve 340 is connected to the transmission execution system 400.

[0033] The transmission execution system 400 includes: a floating joint 410, a push rod 420, and a push rod 430. The upper end of the floating joint 410 is connected to the cylinder rod end of the cylinder 110, and the lower end of the floating joint 410 is connected to the upper end of the push rod 420. The upper end of the push rod 420 is connected to the air nozzle 120. The push rod 420 has a hollow channel inside. The lower end of the push rod 420 is connected to the upper end of the push rod 430. A clamp sealing sleeve 510 is clamped between the lower end face of the push rod 420 and the upper end face of the push rod 430. The lower end of the push rod 430 is provided with a conical sealing head. The outer conical surface of the conical sealing head of the push rod 430 is matched with the outlet slope of the discharge nozzle 520. The push rod 420 and the push rod 430 pass through the inner cavity of the connecting sleeve 340.

[0034] This invention, a cylinder-driven quantitative filling head, is applied to quantitative filling operations of liquid materials in industries such as pharmaceuticals, food, and daily chemicals. It adapts to three usage requirements: conveying liquids of different viscosities, adjusting filling volumes to multiple specifications, and ensuring hygienic production compliance. The complete workflow consists of four stages: deployment of the support installation body, assembly of the quick-release sealed cavity, docking of the transmission actuator, and quantitative filling operation, as detailed below:

[0035] First, the supporting mounting body is deployed: the cylinder 110, as the power drive core, is fixed to the upper end of the mounting base 220 via the support rod 210, forming the upper support frame. The lower end of the mounting base 220 has a standard chuck structure, which serves as the docking reference between the upper power component and the lower filling cavity. A through hole is reserved in the center of the mounting base 220 for the cylinder rod to pass through and dock with the internal transmission mechanism.

[0036] Next, the quick-release sealing cavity is assembled: the connecting sleeve 340 serves as the main body of the filling cavity, with its upper, lower, and side inlet ends all machined into chuck structures; the upper chuck of the connecting sleeve 340 aligns and connects with the lower chuck of the mounting base 220, with a clamp sealing sleeve 510 sandwiched between the mating end faces, and the outer side is locked by clamp one 310. The lower chuck of the connecting sleeve 340 aligns and connects with the upper chuck of the discharge nozzle 520, and the outer side is locked by clamp two 320; the outlet of the discharge nozzle 520 is machined with a sealing fit bevel. The chuck at the side inlet end of the connecting sleeve 340 quickly connects with the external feed pipe through clamp three 330. The clamp sealing sleeve 510 is made of food-grade silicone material, forming a static seal after being squeezed by the end faces of the two chucks, isolating the material from the upper cavity.

[0037] Next, the transmission actuator is connected: the rod end of cylinder 110 is connected to floating joint 410, and the lower end of floating joint 410 is connected to the upper end of push rod 420, which can automatically compensate for assembly coaxiality errors and avoid jamming and wear during reciprocating motion. Push rod 420 has a hollow channel machined inside, the upper end of which is connected to air nozzle 120, and the lower end face is connected to the upper end face of push rod 430. A clamp sealing sleeve 510 is clamped between the mating end faces to achieve internal section sealing. Push rod 420 and push rod 430 are integrally inserted into the inner cavity of connecting sleeve 340. The bottom end of push rod 430 is provided with a conical sealing head, the outer conical surface of which can fit and cooperate with the outlet slope of discharge nozzle 520 to form an end face seal at the discharge end.

[0038] Finally, the quantitative filling operation begins: material continuously enters the cavity through the side inlet of the connecting sleeve 340. The clamp sealing sleeve 510 isolates the material from the upper transmission cavity, preventing material overflow and contamination of the transmission components. The cylinder 110, controlled by a solenoid valve, extends and retracts, driving the floating joint 410, push rod 420, and push rod 430 to reciprocate up and down. When the cylinder 110 retracts, the conical sealing head at the bottom of push rod 430 disengages from the inclined surface of the discharge nozzle 520, allowing material to flow out through the nozzle 520, completing the filling process. When the cylinder 110 extends, the conical sealing head tightly contacts the inclined surface of the discharge nozzle 520, cutting off the material flow and stopping the filling process. After filling stops, the air source connected to the nozzle 120 blows air through the hollow channel inside the push rod, removing any remaining material at the discharge nozzle 520. Combined with the slight negative pressure effect created by the upward movement of the push rod, this double-layered anti-leaking effect prevents material waste and equipment contamination. By replacing different specifications of push rod assemblies and adjusting the cylinder stroke, it is possible to adapt to liquid materials of different viscosities and meet the production needs of different filling volumes.

[0039] The core innovation of this invention lies in:

[0040] Firstly, addressing the industry pain point of traditional sealing rings generating debris and contaminating products through linear friction with the piston rod, this invention adopts a fully static sealing structure with a clamp sealing sleeve. All seals are clamped between the mating end faces, and no seals move in a linear frictional motion with the push rod. This eliminates the risk of seal wear and debris at the source, preventing sealing debris from mixing into materials and causing product contamination, thus meeting the hygiene-grade production requirements of the food and pharmaceutical industries.

[0041] Secondly, addressing the issues of cumbersome disassembly and assembly, difficult cleaning, and non-compliance with sanitary production requirements of traditional threaded connection structures, this invention employs a quick-release structure with a chuck and sanitary clamps at all cavity connection points, enabling rapid disassembly and assembly of various components. The inner cavity of the housing has no complex dead corners or thread gaps, facilitating thorough cleaning and disinfection, reducing maintenance difficulty and cleaning costs, and meeting sanitary production standards.

[0042] Furthermore, addressing the issues of poor sealing, easy dripping, and narrow applicability of traditional filling heads, this invention employs a conical sealing head that mates with the inclined surface of the discharge nozzle to create an end-face seal. Combined with the slight negative pressure created by the upward movement of the push rod and the end-blowing structure, it achieves a dual anti-drip effect, effectively preventing material waste and equipment contamination. Simultaneously, by replacing push rods of different specifications and adjusting the cylinder stroke, it can adapt to liquids of different viscosities and various filling volume requirements, making it suitable for a wide range of scenarios.

[0043] In summary, compared with traditional sealing ring filling heads, this invention integrates four functions—debris-free sealing, quick-release maintenance, drip prevention, and multi-scenario adaptability—through a frictionless static sealing structure formed by a clamp sealing sleeve, a sanitary connection structure with full chuck quick release, and a dual anti-drip and wide-adaptability structure with conical sealing and micro-negative pressure blowing. This solves the industry pain points of traditional filling heads, such as sealing debris contamination, inconvenient disassembly and maintenance, dripping waste, and poor adaptability. It improves the stability and cleanliness of filling operations and is suitable for the liquid quantitative filling production needs of multiple industries such as pharmaceuticals, food, and daily chemicals.

[0044] The specific embodiments of the present invention have been described above, but the present invention is not limited thereto. Various changes can be made to the present invention as long as they do not depart from the spirit of the present invention.

Claims

1. A cylinder-driven quantitative filling head, characterized in that, include: The system comprises a power drive structure (100), a support mounting module (200), a quick-release structure (300), a transmission actuator (400), and a sealing structure (500). The power drive structure (100) is fixed to the upper end of the quick-release structure (300) via the support mounting module (200). The lower end of the support mounting module (200) is sealed to the upper end of the quick-release structure (300) via the sealing structure (500). The lower end of the quick-release structure (300) is sealed to the upper end of the sealing structure. The quick-disassembly structure (300) is connected to the external feed pipe, the upper end of the transmission execution system (400) is connected to the output end of the power drive structure (100), the transmission execution system (400) is installed in the inner cavity of the quick-disassembly structure (300), the internal connection of the transmission execution system (400) is provided with a sealing structure (500), and the lower end of the transmission execution system (400) cooperates with the sealing structure (500) to form a discharge end seal; The sealing structure (500) includes a clamp sealing sleeve (510) and a discharge nozzle (520). The clamp sealing sleeve (510) is made of food-grade silicone. The clamp sealing sleeve (510) is disposed between the connection end face of the support installation module (200) and the quick disassembly structure (300). The clamp sealing sleeve (510) is disposed between the connection end face of the internal push rod of the transmission execution system (400). The clamp sealing sleeve (510) is clamped at the docking point of the chuck end face of the quick disassembly structure (300). The upper end of the discharge nozzle (520) is connected to the lower end of the quick disassembly structure (300). The outlet of the discharge nozzle (520) is provided with a slope.

2. The cylinder-driven quantitative filling head according to claim 1, characterized in that, The power drive structure (100) includes a cylinder (110) and a nozzle (120). The cylinder (110) is fixed to the upper end of the quick-release structure (300) by a support mounting module (200). The rod end of the cylinder (110) is connected to the upper end of the transmission execution system (400). The nozzle (120) is connected to an external air source and is connected to the hollow channel inside the transmission execution system (400).

3. The cylinder-driven quantitative filling head according to claim 2, characterized in that, The support mounting module (200) includes a support rod (210) and a mounting base (220). The upper end of the support rod (210) is fixedly connected to the cylinder (110), and the lower end of the support rod (210) is fixed to the upper end of the mounting base (220). The lower end of the mounting base (220) is a chuck structure. The mounting base (220) is in contact with the upper chuck face of the quick-release structure (300). A clamp sealing sleeve (510) is sandwiched between the lower chuck face of the mounting base (220) and the quick-release structure (300).

4. The cylinder-driven quantitative filling head according to claim 3, characterized in that, The quick-disassembly structure (300) includes: clamp one (310), clamp two (320), clamp three (330) and connecting sleeve (340). The upper end, lower end and side feed port end of the connecting sleeve (340) are all chuck structures. The upper chuck of the connecting sleeve (340) is connected to the support installation module (200) through clamp one (310). A clamp sealing sleeve (510) is sandwiched between the upper chuck surface of the connecting sleeve (340) and the support installation module (200). The lower chuck of the connecting sleeve (340) is connected to the feed nozzle (520) through clamp two (320). The side feed port end chuck of the connecting sleeve (340) is connected to the external feed pipe through clamp three (330). The inner cavity of the connecting sleeve (340) is connected to the transmission execution system (400).

5. The cylinder-driven quantitative filling head according to claim 4, characterized in that, The transmission actuator (400) includes: a floating joint (410), a push rod one (420), and a push rod two (430). The upper end of the floating joint (410) is connected to the cylinder rod end of the cylinder (110), and the lower end of the floating joint (410) is connected to the upper end of the push rod one (420). The upper end of the push rod one (420) is connected to the air nozzle (120). The push rod one (420) has a hollow channel inside. The lower end of push rod 1 (420) is connected to the upper end of push rod 2 (430). A clamp sealing sleeve (510) is sandwiched between the lower end face of push rod 1 (420) and the upper end face of push rod 2 (430). A conical sealing head is provided at the lower end of push rod 2 (430). The outer conical surface of the conical sealing head of push rod 2 (430) is matched with the inclined surface of the outlet of the feed nozzle (520). Push rod 1 (420) and push rod 2 (430) pass through the inner cavity of connecting sleeve (340).

Images