Near half stroke micro flow sterile regulating valve

Abstract

The utility model relates to the technical field of parts spraying, and discloses a near half range small flow sterile regulating valve, which comprises a shell, a flange is arranged at the end of the shell, a hose is arranged in the shell, the shell is made of steel material, the hose is made of fluorine rubber material, a flow limiting mechanism is installed on the side of the shell, the flow limiting mechanism comprises a fixed shell, a rotating rod one, a gear, a rack and a pressing plate, the fixed shell is arranged on the side of the shell, the rotating rod one is rotationally connected in the fixed shell, the gear is fixedly connected to the outside of the rotating rod one, the rack is slidingly connected to the middle part of the fixed shell and the shell, and the gear and the rack are in mesh with each other. In the utility model, the flow is adjusted by extruding the hose through the external mechanism, the fluid is completely closed in the pipe, is isolated from the external mechanical structure, the pollution risk is eradicated, and the absolute sterility of fluid delivery is ensured.

Description

Technical Field

[0001] This utility model relates to the field of component spraying technology, and in particular to a near-half-range micro-flow sterile regulating valve. Background Technology

[0002] Aseptic control valves are specialized valves designed for high-cleanliness industries such as pharmaceuticals, biotechnology, and food and beverage. Their core function is to precisely control parameters such as flow rate, pressure, and temperature of the fluid medium while maintaining a sterile system. Through the use of dead-angle-free flow channels, highly polished surfaces (typically 316L stainless steel), and diaphragm or bellows seals, they effectively prevent bacterial growth and cross-contamination. These valves typically need to meet the requirements of Clean In-Place (CIP) and Sterilize In-Place (SIP), making them a key component in ensuring stable aseptic production processes and product quality.

[0003] Firstly, regarding flow control, existing aseptic control valves are mainly used in high-flow-rate applications (such as above 1000 L / hr). They are ill-suited for the small, continuous feeding required in fields such as bio-fermentation, exhibiting problems such as inaccurate control, large detection errors, and an inability to achieve zero leakage. Instantaneous flow fluctuations can easily lead to abnormal microbial metabolism. Secondly, regarding aseptic assurance, the direct connection between the valve stem and the valve cavity, even with seals, still presents a risk of microbial survival and contamination. Therefore, a near-half-range micro-flow aseptic control valve is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a near-half-range micro-flow sterile regulating valve, which aims to improve the existing technology, which is mainly used in high-flow conditions and is not suitable for small, continuous feeding. The valve stem is directly connected to the valve cavity, and even with a seal, there is still a risk of microbial survival and contamination in the gap.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A near-half-range micro-flow sterile regulating valve includes a housing, a flange at the end of the housing, a hose inside the housing, the housing being made of steel, the hose being made of fluororubber, and a flow limiting mechanism mounted on the side of the housing.

[0007] As a further description of the above technical solution:

[0008] The flow limiting mechanism includes a fixed shell, a rotating rod, a gear, a rack, and a pressure plate. The fixed shell is disposed on the side of the outer shell. The rotating rod is rotatably connected inside the fixed shell. The gear is fixedly connected to the outside of the rotating rod. The rack is slidably connected to the middle of the fixed shell and the outer shell. The gear and the rack mesh with each other. The pressure plate is fixedly connected to the end of the rack. The bottom surface of the pressure plate contacts the hose.

[0009] As a further description of the above technical solution:

[0010] A motor is mounted on the side of the fixed housing, and the rotating rod is fixedly connected to the output end of the motor.

[0011] As a further description of the above technical solution:

[0012] A guide plate is fixedly connected to the side of the rack, and a guide groove is provided inside the fixed shell. The guide plate is slidably connected to the middle of the guide groove.

[0013] As a further description of the above technical solution:

[0014] The current limiting mechanism includes a second rotating rod, a roller, and a connecting frame. The second rotating rod is slidably connected to the inner side of the housing, the roller is fixedly connected to the outer side of the second rotating rod, the connecting frame is disposed on the side of the roller, and the connecting plate of the roller is rotatably connected to the outer side of the second rotating rod. A groove is provided on the inner side of the housing, and the second rotating rod is slidably connected to the middle of the groove.

[0015] As a further description of the above technical solution:

[0016] An electric push rod is rotatably connected to the middle of the housing, and the output end of the electric push rod is fixedly connected to the side of the connecting frame.

[0017] This utility model has the following beneficial effects:

[0018] In this invention, by setting up a flow-limiting mechanism that physically squeezes the hose from the outside, precise flow regulation is achieved whether a gear and rack drive pressure plate is used or an electric push rod is used in conjunction with a sliding roller. Because the fluid is always completely enclosed within the replaceable hose, and is completely isolated from the complex external mechanical transmission structure, the risk of microbial contamination that may arise from gaps in the valve stem seal and other structural gaps in traditional valves is eliminated. Thus, the simple structure ensures absolute sterility during fluid transport, making it particularly suitable for applications requiring high cleanliness, such as biopharmaceutical manufacturing. Attached Figure Description

[0019] Figure 1This is a three-dimensional schematic diagram of the near-half-range micro-flow sterile regulating valve proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the rotating rod of the near-half-range micro-flow sterile regulating valve proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the outer shell of the near-half-range micro-flow sterile regulating valve proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the fixed housing structure of the near-half-range micro-flow sterile regulating valve proposed in this utility model;

[0023] Figure 5 This is a schematic diagram of the roller structure of the near-half-range micro-flow sterile regulating valve proposed in this utility model;

[0024] Figure 6 This is a schematic diagram of the connecting frame of the near-half-range micro-flow sterile regulating valve proposed in this utility model.

[0025] Figure 7 This is a schematic diagram of the electric actuator of the near-half-range micro-flow sterile regulating valve proposed in this utility model.

[0026] Legend:

[0027] 1. Outer shell; 2. Flange; 3. Hose; 4. Flow limiting mechanism; 401. Fixed shell; 402. Rotating rod one; 403. Gear; 404. Rack; 405. Pressure plate; 406. Motor; 407. Guide plate; 408. Guide groove; 411. Rotating rod two; 412. Roller; 413. Slide groove; 414. Connecting frame; 415. Electric push rod. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] Reference Figures 1-4An embodiment of this utility model provides a near-half-range micro-flow sterile regulating valve, including a housing 1, a flange 2 at the end of the housing 1, a hose 3 inside the housing 1, the housing 1 being made of steel to increase the hardness of the housing 1, the hose 3 being made of fluororubber, a new type of heat-resistant organic material with deformable characteristics, and a flow limiting mechanism 4 installed on the side of the housing 1.

[0031] The flow limiting mechanism 4 includes a fixed shell 401, a rotating rod 402, a gear 403, a rack 404, and a pressure plate 405. The fixed shell 401 is located on the side of the outer shell 1 and protects the internal structure. The rotating rod 402 is rotatably connected to the inside of the fixed shell 401. The gear 403 is fixedly connected to the outside of the rotating rod 402, and the rotating rod 402 drives the gear 403 to rotate synchronously. The rack 404 is slidably connected to the middle of the fixed shell 401 and the outer shell 1. The gear 403 and the rack 404 mesh with each other. While the gear 403 rotates, it controls the movement of the rack 404. The pressure plate 405 is fixedly connected to the end of the rack 404. The bottom surface of the pressure plate 405 contacts the hose 3. When the rack 404 moves downward, the pressure plate 405 squeezes the space of the hose 3, thereby controlling the flow rate inside the hose 3. At the same time, due to the characteristics of the new heat-resistant organic material, the pressure plate 405 can control nearly half of the space inside the hose 3. A motor 406 is mounted on the side of the fixed housing 401, and a rotating rod 402 is fixedly connected to the output end of the motor 406. The motor 406 is used to control the rotation of the rotating rod 402.

[0032] A guide plate 407 is fixedly connected to the side of the rack 404. A guide groove 408 is provided inside the fixed housing 401. The guide plate 407 is slidably connected to the middle of the guide groove 408. Through the cooperation between the guide plate 407 and the guide groove 408, the trajectory of the rack 404 when it moves is limited, and the rack 404 is prevented from deviating when it moves.

[0033] Example 2:

[0034] Reference Figures 5-7In contrast to the above embodiments, this utility model also provides an embodiment in which the flow limiting mechanism 4 includes a second rotating rod 411, a roller 412, and a connecting frame 414. The second rotating rod 411 is slidably connected to the inner side of the outer shell 1, and the roller 412 is fixedly connected to the outer side of the second rotating rod 411. The roller 412 moves synchronously with the second rotating rod 411. The connecting frame 414 is disposed on the side of the roller 412, and the connecting plate of the roller 412 is rotatably connected to the outer side of the second rotating rod 411. The connecting frame 414 moves with the roller 412. A groove 413 is provided on the inner side of the outer shell 1. The second rotating rod 411 is slidably connected to the middle of the groove 413. The groove 413 is inclined. The second rotating rod 411 moves obliquely in the groove 413. The second rotating rod 411 moves with the roller 412, squeezing the space of the hose 3. The roller 412 can squeeze and control the space of nearly half of the hose 3. An electric push rod 415 is rotatably connected to the middle of the outer casing 1. The output end of the electric push rod 415 is fixedly connected to the side of the connecting frame 414. The electric push rod 415 is used to push the connecting frame 414, thereby controlling the movement of the roller 412.

[0035] Working principle: In the first embodiment, the flow-limiting mechanism 4 drives the rotating rod 402 via the starting motor 406, causing it to rotate along with the gear 403. The rotating gear 403 pushes the rack 404, which in turn moves the pressure plate 405 downwards, compressing the space in the hose 3 and thus adjusting the flow rate in the hose 3. In the second embodiment, the flow-limiting mechanism 4 activates the electric push rod 415, whose output end pushes the roller 412 through the connecting frame 414. With the guidance of the inclined slide groove 413 and the rotating rod 411, the roller 412 is pushed towards the hose 3, compressing the space in the hose 3 and adjusting the flow rate in the hose 3. Simultaneously, since the fluid only flows through the inside of the hose 3, it does not come into contact with external structures, avoiding external contamination.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A near-half-range micro-flow sterile regulating valve, comprising a housing (1), characterized in that: The end of the housing (1) is provided with a flange (2), and the inside of the housing (1) is provided with a hose (3). The housing (1) is made of steel, the hose (3) is made of fluororubber, and a flow limiting mechanism (4) is installed on the side of the housing (1).

2. The near-half-range micro-flow sterile regulating valve according to claim 1, characterized in that: The flow limiting mechanism (4) includes a fixed shell (401), a rotating rod (402), a gear (403), a rack (404), and a pressure plate (405). The fixed shell (401) is disposed on the side of the outer shell (1). The rotating rod (402) is rotatably connected to the inside of the fixed shell (401). The gear (403) is fixedly connected to the outside of the rotating rod (402). The rack (404) is slidably connected to the middle of the fixed shell (401) and the outer shell (1). The gear (403) meshes with the rack (404). The pressure plate (405) is fixedly connected to the end of the rack (404). The bottom surface of the pressure plate (405) contacts the hose (3).

3. The near-half-range micro-flow sterile regulating valve according to claim 2, characterized in that: A motor (406) is mounted on the side of the fixed housing (401), and the rotating rod (402) is fixedly connected to the output end of the motor (406).

4. The near-half-range micro-flow sterile regulating valve according to claim 2, characterized in that: A guide plate (407) is fixedly connected to the side of the rack (404), and a guide groove (408) is provided inside the fixed shell (401). The guide plate (407) is slidably connected to the middle of the guide groove (408).

5. The near-half-range micro-flow sterile regulating valve according to claim 1, characterized in that: The flow limiting mechanism (4) includes a second rotating rod (411), a roller (412), and a connecting frame (414). The second rotating rod (411) is slidably connected to the inner side of the outer shell (1). The roller (412) is fixedly connected to the outer side of the second rotating rod (411). The connecting frame (414) is disposed on the side of the roller (412). The connecting plate of the roller (412) is rotatably connected to the outer side of the second rotating rod (411). A groove (413) is provided on the inner side of the outer shell (1). The second rotating rod (411) is slidably connected to the middle part of the groove (413).

6. The near-half-range micro-flow sterile regulating valve according to claim 5, characterized in that: An electric push rod (415) is rotatably connected to the middle of the outer casing (1), and the output end of the electric push rod (415) is fixedly connected to the side of the connecting frame (414).

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