High-speed sterile double-liquid-level filling valve

Abstract

The utility model relates to the technical field of liquid filling, in particular to a high-speed sterile double-liquid-level filling valve which comprises a valve cavity, the upper end of the valve cavity is a closed end, the lower end of the valve cavity is a liquid outlet, a first piston, a second piston and a valve element are sequentially arranged in the valve cavity from top to bottom, a buffer spring is sleeved on the second piston, the first piston pushes the second piston to move, and the second piston pushes the valve element to move. The second piston pushes the valve element to move, and the valve element extends into the liquid outlet to limit the liquid outlet amount. The high-speed sterile double-liquid-level filling valve can be flexibly switched between large flow and small flow, and different filling requirements are met. When the flow is large, the piston II independently controls the flow to ensure quick filling; when flow is small, the first piston pushes the second piston and the valve element, the liquid outlet amount is rapidly adjusted, and accurate control is achieved. By means of the design, the filling efficiency and flexibility are remarkably improved. The whole filling valve is made of high-strength and corrosion-resistant materials and is specially designed, so that the stability and the sealing performance of the whole structure are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid filling equipment, in particular to a high-speed aseptic double-liquid-level filling valve. Background Art

[0002] In the field of liquid filling, although the existing filling technology has met market demand to a certain extent, it still has some significant shortcomings, which limit the further improvement of filling efficiency, accuracy and sterility.

[0003] For example, filling accuracy is insufficient. Traditional filling methods often use relatively simple mechanical structures, which make it difficult to achieve precise control of the filling volume. Especially when filling small volumes, the friction and wear of mechanical components and the instability of liquid flow can easily lead to a decrease in filling accuracy, affecting the quality and consistency of the product. Insufficient filling accuracy can lead to large differences between products, affecting the consumer experience, and may even cause quality issues and damage the brand image. For example, the filling efficiency is low. Some existing filling equipment has certain limitations in design and manufacturing, resulting in slow filling speeds that cannot meet the needs of high-speed production lines. In addition, some equipment requires frequent manual intervention during the filling process, further reducing filling efficiency. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and provides a high-speed aseptic double-liquid-level filling valve.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A high-speed aseptic dual-liquid-level filling valve comprises a valve cavity, wherein the upper end of the valve cavity is a closed end, and the lower end is a liquid outlet. Piston 1, piston 2, and valve core are sequentially arranged in the valve cavity from top to bottom. A buffer spring is provided on the upper sleeve of piston 2. Piston 1 pushes piston 2 to move, and piston 2 pushes the valve core to move. The valve core extends into the liquid outlet to limit the liquid output.

[0007] Furthermore, the valve chamber includes a cylinder upper cover, a cylinder lower cover, an upper valve seat, a lower valve seat, and a liquid outlet nozzle connected in sequence from top to bottom, piston one and piston two are arranged in the cylinder upper cover and the cylinder lower cover in sequence, the upper part of the valve core is arranged in the upper valve seat, and the lower part is arranged in the lower valve seat.

[0008] Furthermore, the cylinder upper cover includes an upper cover body, the upper end of the upper cover body is a closed end, the lower end is provided with a docking port, and the side wall is provided with a straight-through installation port.

[0009] Furthermore, the cylinder lower cover includes a lower cover body, the upper and lower ends of the lower cover body are open ends, the upper end of the lower cover body is provided with an annular boss 1, the annular boss 1 is inserted into the docking port, and a straight-through installation port 2 is opened on the side wall of the lower cover body.

[0010] Furthermore, the upper valve seat and the lower valve seat both include a seat body, a through hole is opened through the middle of the seat body, and an annular boss 2 is provided at the upper and lower ends of the through hole. The cylinder lower cover and the upper valve seat, and the upper valve seat and the lower valve seat are plug-in connected through the annular boss 2.

[0011] Furthermore, the piston 1 includes a piston push rod 1, on which an annular plug body 1 is provided, and the lower end of the piston push rod 1 is in contact with the piston 2.

[0012] Furthermore, the second piston includes a second piston push rod, the upper part of which is provided with a second annular plug body, the lower part of which is a cavity, and the diameter of the lower part decreases from top to bottom, and the upper end of the valve core is inserted into the cavity.

[0013] Furthermore, the valve core includes a plug-in section, the upper part of the plug-in section is plugged into the cavity, the lower end is connected to the clamping section, the upper end of the clamping section is clamped to the lower end of the upper valve seat, and the lower end is connected to the flow control head, which is suspended at the upper end of the liquid outlet nozzle, and its shape matches the liquid outlet.

[0014] Beneficial effects of the utility model:

[0015] The high-speed aseptic dual-liquid-level filling valve provided by the utility model can flexibly switch between high flow and low flow to meet different filling needs. When the flow is large, piston two controls the flow alone to ensure fast filling; when the flow is small, piston one pushes piston two and the valve core to quickly adjust the liquid output and achieve precise control. This design significantly improves the filling efficiency and flexibility. The entire filling valve is made of high-strength, corrosion-resistant materials and is specially designed to ensure the stability and sealing of the overall structure. In particular, the valve chamber and its various components, such as the cylinder upper cover, cylinder lower cover, upper valve seat, lower valve seat, etc., are all precisely processed and specially sealed to effectively prevent the entry of external contaminants and ensure the sterility of the filling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the utility model high-speed aseptic dual-liquid-level filling valve;

[0017] Figure 2 This is a cross-sectional view of the utility model high-speed aseptic dual-liquid-level filling valve;

[0018] Figure 3 This is a structural diagram of the cylinder upper cover of the utility model;

[0019] Figure 4 This is a structural diagram of the cylinder lower cover of the utility model;

[0020] Figure 5 This is a schematic structural diagram of the upper valve seat and the lower valve seat of the utility model;

[0021] Figure 6 This is a schematic structural diagram of a piston 1 of the present utility model;

[0022] Figure 7 This is a schematic structural diagram of the second piston of the present invention;

[0023] Figure 8 This is a structural diagram of the valve core of the utility model.

[0024] In the figure: 1-valve chamber, 11-cylinder upper cover, 111-upper cover body, 112-docking port, 113-straight-through mounting port, 12-cylinder lower cover, 121-lower cover body, 122-annular boss, 123-straight-through mounting port 2, 13-upper valve seat, 131-seat body, 132-through hole, 133-annular boss 2, 134-two-way mounting port, 14-lower valve seat, 15-liquid outlet, 2-liquid outlet, 3-piston 1, 31-piston push rod 1, 32-annular plug body 1, 4-piston 2, 41-piston push rod 2, 42-annular plug body 2, 43-cavity, 5-valve core, 51-plug-in section, 52-clamping section, 53-flow control head. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0026] In the description of this application, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are used solely to facilitate the description of this application and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application.

[0028] Please refer to Figure 1 and Figure 2The utility model provides a high-speed aseptic dual-liquid-level filling valve, comprising a valve chamber 1, the upper end of which is a closed end, and the lower end of which is a liquid outlet 2. Piston 1 3, piston 2 4, and valve core 5 are arranged in sequence from top to bottom in the valve chamber 1. A buffer spring is sleeved on piston 2 4. Piston 1 3 pushes piston 2 4 to move, which in turn pushes valve core 5 to move. Valve core 5 extends into liquid outlet 2 to limit the amount of liquid discharged. In short, when a high-flow filling rate is required, piston 2 4 controls the flow rate independently. When a low-flow filling rate is required, piston 1 3 pushes piston 2 4 downward, quickly blocking part or all of liquid outlet 2, limiting the liquid flow rate and reducing the flow rate.

[0029] The valve chamber 1, the main body of the filling valve, consists, from top to bottom, of the cylinder upper cover 11, the cylinder lower cover 12, the upper valve seat 13, the lower valve seat 14, and the liquid outlet nozzle 15. These components are precision-machined and specially designed to ensure the stability and sealing of the overall structure. Piston 1 3 and piston 2 4 are respectively mounted in the cylinder upper cover 11 and the cylinder lower cover 12. The upper portion of the valve core 5 is mounted in the upper valve seat 13, and the lower portion is mounted in the lower valve seat 14. The liquid inlet 6 is located on the sidewall of the lower valve seat 14.

[0030] Please refer to Figure 1-3 The cylinder upper cover 11 includes an upper cover body 111. The upper cover body 111 is made of high-strength, corrosion-resistant material, and the upper end is a completely enclosed dome design to prevent the entry of external contaminants. The lower end of the upper cover body 111 is provided with a docking port 112. The docking port 112 is designed as a precise cylindrical hole, which tightly fits with the annular boss 122 of the cylinder lower cover 12, and a leak-free connection is achieved through an O-ring or a special sealing gasket. A straight-through mounting port 113 is provided on the side wall. The straight-through mounting port 113 is used to connect a straight-through pipe, which is connected to the air source to control the movement of the internal piston.

[0031] Please refer to Figure 1 、 Figure 2 、 Figure 4 The cylinder lower cover 12 includes a lower cover body 121, which is also made of high-strength material and has openings at both ends. An annular boss 122 is provided at the upper end of the lower cover 121. This precisely machined annular protrusion seamlessly interfaces with the docking port 112 of the cylinder upper cover 11. A second through-hole 123 is provided on the sidewall of the lower cover 121. This through-hole 123 is used to connect to a through-tube, which is connected to the air source and controls the movement of the internal piston.

[0032] Please refer to Figure 1 、 Figure 2 、 Figure 5The upper valve seat 13 includes a seat body 131. The seat body 131 is made of high-quality stainless steel. A through hole 132 is provided in the middle for liquid circulation. An annular boss 133 is provided at both the upper and lower ends of the through hole 132. The cylinder lower cover 12 and the upper valve seat 13 are plug-in connected via the annular boss 133. A two-way mounting port 134 is also provided on the upper valve seat 13. The two-way mounting port 123 is used to connect a straight-through pipe, which is connected to the air source to control the movement of the internal piston. The structure of the lower valve seat 14 is the same as that of the upper valve seat 13. The only difference is that the two-way mounting port 134 is not provided on the side wall, so its structure will not be described in detail. The upper valve seat 13 and the lower valve seat 14 are also plug-in connected via the annular boss 133.

[0033] Please refer to Figure 1 、 Figure 2 、 Figure 6 Piston 1 (3) includes a piston push rod (31), a precision-machined cylindrical rod with a specially treated surface to reduce friction. An annular plug (32) is attached to the piston push rod (31), which tightly fits within the cylinder lower cover (12), forming a seal. The lower end of the piston push rod (31) is designed to be flat to ensure smooth contact with piston 2 (4).

[0034] Please refer to Figure 1 、 Figure 2 、 Figure 7 Piston 2 (4) includes a piston push rod (41). This is similar to piston 1 (3), but has a longer stroke. An annular plug (42) is located above piston push rod (41). This plug also tightly fits within the cavity within cylinder lower cover (12) or upper valve seat (13), forming a seal. The lower portion of piston push rod (41) is a cavity (43). The lower portion of piston push rod (41) is tapered, with a larger diameter at the top for easier assembly.

[0035] Please refer to Figure 1 、 Figure 2 、 Figure 8 The valve core 5 includes a plug-in section 51, the upper part of the plug-in section 51 is plugged into the cavity 43, and the lower end is connected to the clamping section 52. The upper end of the clamping section 52 is clamped to the lower end of the upper valve seat 13, and the lower end is connected to the flow control head 53. The flow control head 53 is suspended at the upper end of the liquid outlet nozzle 15, and its shape matches the liquid outlet 2.

[0036] Working principle:

[0037] In the initial state:

[0038] When the filling valve is in the closed position, the plug section 51 of the valve core 5 is inserted into the cavity 43 of the second piston 4, and its flow control head 53 is tightly fitted on the liquid outlet 2 of the liquid outlet nozzle 15, thereby preventing liquid from flowing out. The buffer spring 5 surrounds the second piston 4 and provides a reset force for the piston 4.

[0039] High flow filling process:

[0040] When high-flow filling is required, an external air source applies upward force to pistons 1 (3) and 2 (4) through direct-through installation port 1 (113) and 2 (123), respectively. Pistons 1 (3) and 2 (4) move upward simultaneously, driving flow control head 53 of valve core 5 gradually away from liquid outlet 2, thereby opening the filling channel. At this point, the liquid to be filled enters valve chamber 1 through liquid inlet 6 and flows out of liquid outlet 2 at high speed, achieving high-flow filling.

[0041] Small flow filling process:

[0042] When low-flow filling is required, the external air source applies a downward driving force to piston 1 3 and piston 2 4 simultaneously or separately through the straight-through mounting port 1 113 and the straight-through mounting port 2 123. The piston push rod 1 31 of piston 1 3 pushes piston 2 4 and the valve core 5 thereon to move downward synchronously. During this process, the annular plug body 2 42 of piston 2 4 remains sealed with the cavity in the cylinder lower cover 12 or the upper valve seat 13 to ensure that the liquid does not leak from the bypass. As piston 2 4 and valve core 5 continue to descend, the flow control head 53 gradually partially or completely blocks the liquid outlet 2, thereby limiting the flow rate and flow of the liquid. By precisely controlling the moving distance of piston 1 3 and piston 2 4, fine adjustment of the liquid filling amount can be achieved.

[0043] In summary, the high-speed aseptic dual-level filling valve realizes flexible adjustment and precise control of the liquid filling process through the coordinated action of piston 1 3 and piston 2 4, and the precise control of the liquid outlet by the valve core 5.

[0044] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A high-speed sterile dual-level filling valve, characterized by: The invention comprises a valve chamber (1), wherein the upper end of the valve chamber (1) is a closed end, the lower end is a liquid outlet (2), a liquid inlet (6) is provided above the liquid outlet (2), and the valve chamber (1) is provided with a piston 1 (3), a piston 2 (4), and a valve core (5) in sequence from top to bottom, a buffer spring is provided on the piston 2 (4), the piston 1 (3) pushes the piston 2 (4) to move, the piston 2 (4) pushes the valve core (5) to move, and the valve core (5) extends into the liquid outlet (2) to limit the amount of liquid discharged.

2. The high-speed aseptic dual-level filling valve according to claim 1, characterized in that: The valve chamber (1) comprises a cylinder upper cover (11), a cylinder lower cover (12), an upper valve seat (13), a lower valve seat (14), and a liquid outlet nozzle (15) which are sequentially connected from top to bottom; piston one (3) and piston two (4) are sequentially arranged in the cylinder upper cover (11) and the cylinder lower cover (12); the upper part of the valve core (5) is arranged in the upper valve seat (13), and the lower part is arranged in the lower valve seat (14); and the liquid inlet (6) is arranged on the side wall of the lower valve seat (14).

3. The high-speed aseptic dual-level filling valve according to claim 2, characterized in that: The cylinder upper cover (11) comprises an upper cover body (111), the upper end of the upper cover body (111) is a closed end, the lower end is provided with a docking port (112), and the side wall is provided with a straight-through installation port (113).

4. The high-speed aseptic dual-level filling valve according to claim 2, characterized in that: The cylinder lower cover (12) includes a lower cover body (121), the upper and lower ends of the lower cover body (121) are both open ends, the upper end of the lower cover body (121) is provided with an annular boss (122), the annular boss (122) is inserted into the docking port (112), and a straight-through installation port (123) is provided on the side wall of the lower cover body (121).

5. The high-speed aseptic dual-level filling valve according to claim 2, characterized in that: The upper valve seat (13) and the lower valve seat (14) both include a seat body, a through hole is provided in the middle of the seat body, and an annular boss is provided at the upper and lower ends of the through hole. The cylinder lower cover (12) and the upper valve seat (13), and the upper valve seat (13) and the lower valve seat (14) are connected by plugging through the annular boss. The upper valve seat (13) is also provided with a two-way installation port.

6. The high-speed aseptic dual-level filling valve according to claim 1, characterized in that: The piston one (3) includes a piston push rod one (31), on which an annular plug body one (32) is provided, and the lower end of the piston push rod one (31) is in contact with the piston two (4).

7. The high-speed aseptic dual-level filling valve according to claim 1, characterized in that: The second piston (4) includes a second piston push rod (41), the upper part of the second piston push rod (41) is provided with a second annular plug body (42), the diameter of the lower part decreases from top to bottom, and the lower part is a cavity (43), and the upper end of the valve core (5) is inserted into the cavity (43).

8. The high-speed aseptic dual-level filling valve according to claim 1, characterized in that: The valve core (5) includes a plug-in section (51), the upper part of the plug-in section (51) is plugged into the cavity (43), the lower end of which is connected to a clamping section (52), the upper end of which is clamped to the lower end of the upper valve seat (13), and the lower end of which is connected to a flow control head (53), which is suspended at the upper end of the liquid outlet nozzle (15) and has an outer shape that matches the liquid outlet (2).

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