Discharge valve and sterile tank

Abstract

The embodiment of the utility model provides an emptying valve and a sterile tank, the emptying valve comprises a valve body, a cavity is arranged in the valve body, and the valve body comprises a feed port and a discharge port which are communicated with the cavity; the valve rod penetrates through the cavity and extends out of the valve body, and the valve rod is movably connected with the valve body; the driving mechanism is connected to one end of the valve rod and used for driving the valve rod to move; the driving mechanism is arranged far away from the feeding hole; the valve clack is connected to the end, close to the feeding port, of the valve rod, the valve clack moves relative to the feeding port, and the valve clack is used for moving along with movement of the valve rod so as to close or open the feeding port; the reset mechanism is connected to the side, away from the feeding port, of the valve body, and the reset mechanism can drive the valve rod to move so that the valve clack can seal the feeding port. And the sterility in the discharging process is ensured, and the high-standard sterility requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical machinery, in particular to a discharge valve and a sterile tank. Background Art

[0002] In the fields of biopharmaceuticals, food processing and cosmetics, a sterile environment during the production process is essential to ensure product quality and safety. Traditional discharge valves often fail to meet the strict aseptic production standards in these demanding sterile environments. Traditional valves have limited sealing performance and are prone to become a breeding ground for bacteria, thereby increasing the risk of cross-contamination. For example, traditional ball valves, butterfly valves and other structures have complex internal flow channels and small inner diameters, which leads to poor material flow when the valve is opened, and may even cause material to be trapped inside the valve. These problems seriously affect the quality and safety of the final product. As the requirements for product quality and safety continue to increase, the production environment in these fields must meet high-level aseptic standards to prevent material contamination, bacterial growth and cross-contamination. Utility Model Content

[0003] Therefore, in order to overcome at least some of the defects and shortcomings in the prior art, the embodiments of the present invention provide a discharge valve and a sterile tank, which are provided with a valve stem, a valve flap, a driving mechanism and a reset mechanism. During the discharge process, the driving mechanism drives the valve stem to move so that the valve flap opens the feed inlet. When the discharge is completed, the reset mechanism drives the valve flap to close the feed inlet in time, thereby ensuring a high degree of sterility during the discharge process and meeting high standards of sterility requirements.

[0004] Specifically, an embodiment of the utility model provides a discharge valve, including a valve body, which has a cavity inside, and the valve body includes a feed port and a discharge port connected to the cavity; a valve stem, which passes through the cavity and extends out of the valve body, and the valve stem is movably connected to the valve body; a driving mechanism, which is connected to one end of the valve stem and is used to drive the valve stem to move; and the driving mechanism is arranged away from the feed port; a valve flap, which is connected to one end of the valve stem close to the feed port, and the valve flap moves relative to the feed port, and the valve flap is used to move with the valve stem to close or open the feed port; a reset mechanism, which is connected to a side of the valve body away from the feed port, and the reset mechanism can drive the valve stem to move so that the valve flap closes the feed port.

[0005] In one embodiment, a diaphragm structure is further included, which is arranged in the cavity. The diaphragm structure has a first connecting part and a second connecting part. The first connecting part is fixedly connected to a side of the valve body close to the driving mechanism. The valve stem passes through the diaphragm structure and the valve stem is fixedly connected to the second connecting part. The diaphragm structure is used to separate the driving mechanism and the valve body.

[0006] In one embodiment, the diaphragm structure is a flexible structure and can deform following the movement of the valve stem.

[0007] In one embodiment, the area of the diaphragm structure is larger than the area of the bottom of the valve body.

[0008] In one embodiment, the reset mechanism includes: a limit plate fixedly connected to the part of the valve stem extending out of the valve body and located between the valve body and the driving mechanism; a reset elastic member disposed between the valve body and the limit plate. When the power of the driving mechanism is lower than the preset power value, the reset elastic member drives the limit plate to move so as to move the valve stem.

[0009] In one embodiment, it further includes: a sealing structure disposed on one side of the valve flap close to the feed port.

[0010] In one embodiment, the sealing structure includes a first sealing structure and a second sealing structure, and the second sealing structure is arranged closer to the center of the valve flap relative to the first sealing structure.

[0011] In one embodiment, the sealing structure includes a silica gel member and a sealing layer coated outside the silica gel member, and the sealing layer is polytetrafluoroethylene.

[0012] In one embodiment, the driving mechanism is a pneumatic driving mechanism, including a driving structure; a valve stem positioning member connected between the driving structure and the valve stem, and the valve stem positioning member is located on the side of the valve body away from the feed port; a limiting member disposed on one side of the valve stem positioning member.

[0013] Another embodiment of the present utility model provides a sterile tank, including a tank body having an accommodation cavity inside; the above-mentioned discharging valve is disposed at the bottom of the tank body, one end of the valve body close to the feed port is connected to the tank body, and the driving mechanism drives the valve stem to move, and then drives the valve flap to move so as to separate or communicate the cavity and the accommodation cavity.

[0014] As can be seen from the above, the above technical features of the present utility model can have one or more of the following beneficial effects: In the embodiment of the present utility model, by setting a valve stem, a valve flap, a driving mechanism and a reset mechanism, during the discharging process, the driving mechanism drives the valve stem to move to open the feed port by the valve flap. When the discharging is completed, the reset mechanism drives the valve flap to close the feed port in time, ensuring high sterility during the discharging process and meeting high-standard sterility requirements. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of a discharging valve provided by an embodiment of the present utility model.

[0017] Figure 2 For Figure 1 the schematic structural diagram of the discharging valve shown.

[0018] Figure 3 For Figure 2 the sectional view of the discharging valve shown.

[0019] Figure 4 For Figure 1 another schematic structural diagram of the discharging valve shown.

[0020] Figure 5 For Figure 4 the sectional view of the discharging valve shown.

[0021] Figure 6 For Figure 5 the partial enlarged view of area A in

[0022] Figure 7 For Figure 5 the partial enlarged view of area B in

[0023] Figure 8 It is a schematic structural diagram of another discharging valve provided by an embodiment of the present utility model.

[0024] Figure 9 It is a schematic structural diagram of a sterile tank provided by an embodiment of the present utility model.

[0025] Figure 10 For Figure 9 the partial enlarged view of area C in

[0026]

Explanation of the reference numerals

[0027] 10. Discharge valve; 100. Valve body; 101. Cavity; 110. Feed inlet; 120. Discharge outlet; 200. Valve stem; 210. First valve stem; 220. Second valve stem; 300. Driving mechanism; 310. Driving structure; 320. Valve stem positioning member; 330. Limiting member; 400. Diaphragm structure; 410. First connecting portion; 420. Second connecting portion; 500. Valve flap; 600. Reset mechanism; 610. Limiting plate; 620. Reset elastic member; 700. Sealing structure; 710. First sealing structure; 720. Second sealing structure; 800. Tank body; 810. Accommodating cavity. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments described in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the embodiments of the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0030] As Figure 1 、 Figure 2 、 Figure 3 As shown, the embodiments of the present utility model provide a discharge valve 10, which includes a valve body 100, a valve stem 200, a driving mechanism 300, a valve flap 500 and a reset mechanism 600. The interior of the valve body 100 has a cavity 101. The valve body 100 includes a feed inlet 110 and a discharge outlet 120 that communicate with the cavity 101. The valve stem 200 passes through the cavity 101 and extends out of the valve body 100, and the valve stem 200 is movably connected to the valve body 100. The driving mechanism 300 is connected to one end of the valve stem 200 for driving the valve stem 200 to move, and the driving mechanism 300 is arranged away from the feed inlet 110. The valve flap 500 is connected to one end of the valve stem 200 close to the feed inlet 110, and the valve flap 500 moves relative to the feed inlet 110. The valve flap 500 is used to move with the valve stem 200 to close or open the feed inlet 110. The reset mechanism 600 is connected to the side of the valve body 100 away from the feed inlet 110, and the reset mechanism 600 can drive the valve stem 200 to move so that the valve flap 500 closes the feed inlet 110.

[0031] During the feeding process, the driving mechanism 300 is activated, driving the valve stem 200 to move upward, thereby driving the valve flap 500 to move relative to the feed inlet 110 to open the feed inlet 110. The materials generated in the previous process enter the internal cavity 101 of the valve body 100 through the feed inlet 110 and are output through the discharge outlet 120. The discharge outlet 120 can be connected to an external pipeline, enabling the materials to be discharged from the discharge outlet 120 into the pipeline and transported to the next process. During this process, the driving mechanism 300 needs to have sufficient power to ensure that the valve stem 200 is in a certain position, that is, the position of the valve stem 200 can ensure that the valve flap 500 opens the feed inlet 110.

[0032] After the feeding is completed, the driving mechanism 300 is closed, and the reset mechanism 600 can promptly drive the valve stem 200 to move, thereby causing the valve flap 500 to move to close the feed inlet 110. This ensures a high level of sterility and cleanliness during the feeding process, meeting high-standard aseptic requirements. If the driving mechanism 300 is accidentally closed or the power is insufficient to keep the valve stem 200 in the above-mentioned certain position, the reset mechanism 600 can also drive the valve stem 200 to move, causing the valve flap 500 to close the feed inlet 110, ensuring that the feed valve 10 is in a sealed state and preventing the materials that have not completed the processing in the previous process from flowing out prematurely.

[0033] Preferably, the valve stem 200 includes a first valve stem 210 and a second valve stem 220, and the diaphragm structure 400 is fixed between the first valve stem 210 and the second valve stem 220. One end of the first valve stem 210 is fixedly connected to the valve flap 500, and the other end is connected to the diaphragm structure 400; one end of the second valve stem 220 extends out of the valve body 100 and is fixedly connected to the driving mechanism 300, and the other end is connected to the diaphragm structure 400. For example, the second valve stem 220 has an internal space for a fixing bolt to pass through. The fixing bolt passes through the first valve stem 210 and the diaphragm structure 400, and the second valve stem 220 is screwed onto the fixing bolt to fix the diaphragm structure 400 between the first valve stem 210 and the second valve stem 220. The diaphragm structure 400 isolates the driving mechanism 300 from the interior of the valve body 100, avoiding incomplete cleaning and sterilization at the position where the second valve stem 220 contacts the valve body 100.

[0034] As Figure 3 、 Figure 7 shown, in one embodiment, the feed valve further includes a diaphragm structure 400. The diaphragm structure 400 is disposed in the cavity 101. The diaphragm structure 400 has a first connection portion 410 and a second connection portion 420. The first connection portion 410 is fixedly connected to one side of the valve body 100 close to the driving mechanism 300, ensuring that the diaphragm structure 400 can be fixed in the cavity 101 and is not easily displaced due to the movement of the valve stem 200. The valve stem 200 passes through the diaphragm structure 400 and is fixedly connected to the second connection portion 420. The diaphragm structure 400 is, for example, made of a deformable flexible material and can move following the movement of the valve stem 200.Figure 7 This is a diagram showing the movement of the diaphragm structure 400 when the valve stem 200 moves to open the feed port 110. The diaphragm structure 400 can separate the drive mechanism 300 from the interior of the valve body 100, preventing the transmission of bacteria and contaminants. The material of the diaphragm structure 400 is made of a sterile material that can withstand high temperatures and pressures, ensuring that it will not be damaged or contaminate the material during operation. Among them, the first connecting portion 410 can be connected to the valve body 100, for example, by bolts, welding, or other mechanical fixing methods, ensuring that the diaphragm structure 400 will not loosen or detach in complex environments such as high temperature, high pressure, or vibration. The diaphragm structure 400 forms a physical barrier between the bottom of the valve body 100 and the external environment, preventing external contaminants from entering the valve body 100 through seams, gaps, etc. of the valve body 100 and contaminating the material, effectively isolating the internal and external environments, avoiding contamination, and ensuring a high degree of sterility during the discharging process.

[0035] Furthermore, the diaphragm structure 400 is a flexible structure and can deform following the movement of the valve stem 200. It can withstand a certain range of deformation and has a variable space, with high stretchability and adaptability, preventing the diaphragm structure 400 from being torn or damaged due to the movement of the valve stem 200 and extending the service life of the diaphragm structure 400. When the valve stem 200 moves, the diaphragm structure 400 can bend, expand, or contract, ensuring close contact between the diaphragm structure 400 and the valve stem 200 as well as between the diaphragm structure 400 and the valve body 100, preventing material leakage, and ensuring that there are no tiny gaps or leakage points, thereby effectively preventing the transmission of contaminants.

[0036] Furthermore, the area of the diaphragm structure 400 is larger than the area of the bottom of the valve body 100. Since the position where the diaphragm structure 400 is connected to the valve stem 200 is fixed, the movement of the valve stem 200 will also drive the movement of the diaphragm structure 400. The diaphragm structure 400 requires a larger diaphragm area to adapt to the movement of the valve stem 200 and prevent the diaphragm structure 400 from being torn when the valve stem 200 moves upward. In addition, the larger diaphragm structure can also ensure that when the diaphragm structure 400 contacts the valve body 100, it completely covers the entire area of the bottom of the valve body 100, effectively preventing incomplete sealing caused by any uncovered area, thereby improving the overall sealing effect of the system, preventing material leakage or the penetration of contaminants. And during the movement of the valve stem 200, the diaphragm structure 400 will deform. The larger diaphragm area can better adapt to this deformation, and the diaphragm structure 400 can still maintain a good sealing state when the valve stem 200 moves, thus avoiding sealing failure caused by deformation.

[0037] Such as Figure 3 and Figure 4As shown, in one embodiment, the reset mechanism 600 includes a limit plate 610 and a reset elastic member 620. The limit plate 610 is fixedly connected to the part of the valve stem 200 extending out of the valve body 100, and is located between the valve body 100 and the driving mechanism 300. The reset elastic member 620 is disposed between the valve body 100 and the limit plate 610. When the power of the driving mechanism 300 is lower than the power preset value, the reset elastic member 620 drives the limit plate 610 to move so as to move the valve stem 200.

[0038] When the driving mechanism 300 works to drive the valve stem 200 to move upward, the valve stem 200 drives the limit plate 610 to move upward to compress the reset elastic member 620. When the driving mechanism 300 is lower than the power preset value or when the driving mechanism 300 is turned off after discharging is completed, that is, when the power of the driving mechanism 300 is not sufficient to maintain the valve stem 200 at a specific position, the reset elastic member 620 resets and drives the limit plate 610 to return to the initial state, and drives the valve stem 200 to move to close the feed port 110. Among them, the reset elastic member 620 is, for example, a compression spring. The above-mentioned power preset value is a threshold value. When the power value of the driving mechanism 300 is less than this threshold value, the power of the driving mechanism 300 is not sufficient to keep the valve stem 200 at a specific position, so that the valve flap 500 keeps the feed port 110 open; when the power of the driving mechanism 300 is equal to or greater than this threshold value, the power of the driving mechanism 300 can ensure that the valve stem 200 stays at a specific position and maintain the normal discharging operation of the discharging valve 10.

[0039] In order to prevent the reset elastic member 620 from deforming or twisting due to compression, a limit rod (not marked in the figure) is provided between the limit plate 610 and the valve body 100. One end of the limit rod is fixedly connected to the valve body 100, and the other end extends through the limit plate 610. It provides a clear guiding path for the limit plate 610 and the reset elastic member 620 during the compression and recovery processes, so that the reset elastic member 620 moves in a straight line during the compression and recovery processes, reducing the deformation caused by the lateral pressure.

[0040] As Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, the discharging valve further includes a sealing structure 700, which is arranged on the side of the valve flap 500 close to the feed port 110, ensuring that when the valve flap 500 closes the valve body 100, the sealing performance of the valve flap 500 is improved, ensuring the safety of the environment and reducing the leakage.

[0041] Preferably, the sealing structure 700 includes a first sealing structure 710 and a second sealing structure 720. The second sealing structure 720 is arranged closer to the center of the valve flap 500 than the first sealing structure 710. The double sealing ring structure is designed to ensure a completely sealed state when the valve flap 500 closes the feed port 110, reducing the risk of incomplete sealing and premature leakage of materials before the reaction is completed.

[0042] Furthermore, the sealing structure 700 includes a silica gel part and a sealing layer coated outside the silica gel part. The sealing layer is polytetrafluoroethylene. When the silica gel part is not resistant to certain chemical substances, the sealing layer can meet the situation where the silica gel part is not resistant to the reaction substances, and further improve corrosion resistance, high temperature resistance, reduce friction and wear, and maintain stable sealing performance in different chemical environments.

[0043] As Figure 4 、 Figure 5 and Figure 8 shown, in one embodiment, the driving mechanism 300 is a pneumatic driving mechanism, including a driving structure 310, a valve stem positioning part 320, and a limiting part 330. The valve stem positioning part 320 is connected between the driving structure 310 and the valve stem 200, and the valve stem positioning part 320 is located on the side of the valve body 100 away from the feed port 110. The limiting part 330 is arranged on one side of the valve stem positioning part 320.

[0044] The driving structure 310 is the core component of the pneumatic driving mechanism 300. This structure generally includes a cylinder, a piston, and related pneumatic control systems. The driving structure 310 is responsible for converting pneumatic energy into mechanical motion to push the movement of the valve stem 200 and maintain the valve stem 200 at a certain position. One end of the valve stem positioning part 320 is fixedly connected to the driving structure 310, and the other end is connected to the diaphragm structure 400. One end of the valve stem 200 extending out of the valve body 100 is arranged inside the valve stem positioning part 320, ensuring that when the driving structure 310 moves, it can drive the valve stem 200 to move. A through hole is opened at the bottom of the valve body 100, and the valve stem 200 and the valve stem positioning part 320 pass through this through hole. The limiting part 330 surrounds the valve stem positioning part 320 and the through hole, having a certain guiding function to keep the valve stem 200 moving in a stable straight line.

[0045] As Figure 9 and Figure 10As shown in the figure, a sterile tank provided by an embodiment of the present utility model includes a tank body 800 and the above-mentioned discharging valve 10. The interior of the tank body 800 has a receiving cavity 810. The tank body 800 is usually made of materials that are corrosion-resistant and not easily contaminated, such as stainless steel, high-temperature resistant plastics or glass. The tank body 800 is designed as a closed structure to ensure the aseptic state of the internal environment. The receiving cavity 810 is used to store and process substances that need to maintain an aseptic environment. The discharging valve 10 is arranged at the bottom of the tank body 800. One end of the valve body 100 close to the feeding port 110 is connected to the tank body 800. The driving mechanism 300 drives the valve stem 200 to move, and further drives the valve flap 500 to move so as to separate or communicate the cavity 101 from the receiving cavity 810. A discharging port communicating with the receiving cavity 810 is provided at the bottom of the tank body 800, and the material in the tank body 800 can flow out from the discharging port.

[0046] When it is necessary to keep the tank body 800 in a sealed state for aseptic treatment of the material contained in the tank body 800, the valve flap 500 closes the feeding port 110 to separate the receiving cavity 810 from the cavity 101, ensuring that the tank body 800 is in a sealed and aseptic state. When the material contained in the tank body 800 needs to be output, the driving mechanism 300 is turned on. The driving mechanism 300 drives the valve stem 200 to move, and further drives the valve flap 500 to move so as to communicate the cavity 101 with the receiving cavity 810. The material in the tank body 800 can be transported from the discharging port to the discharging valve 10 and output to the next process through the discharging valve 10.

[0047] In addition, it can be understood that the foregoing embodiments are only exemplary descriptions of the present utility model. On the premise that the technical features do not conflict, the structures are not contradictory, and the utility model purpose of the present utility model is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used in combination.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A discharge valve (10), characterized in that: include: A valve body (100) having a cavity (101) therein, the valve body (100) comprising an inlet (110) and an outlet (120) communicating with the cavity (101); A valve stem (200) passes through the cavity (101) and extends out of the valve body (100), the valve stem (200) being movably connected to the valve body (100); a driving mechanism (300) connected to one end of the valve stem (200) and used for driving the valve stem (200) to move; and the driving mechanism (300) is arranged away from the feed port (110); a valve flap (500) connected to one end of the valve stem (200) close to the feed inlet (110), and the valve flap (500) moves relative to the feed inlet (110), and the valve flap (500) is used to move along with the movement of the valve stem (200) to close or open the feed inlet (110); A reset mechanism (600) is connected to a side of the valve body (100) away from the feed inlet (110), and the reset mechanism (600) can drive the valve stem (200) to move so that the valve flap (500) closes the feed inlet (110).

2. The discharge valve (10) according to claim 1, characterized in that: The invention also comprises a diaphragm structure (400) which is arranged in the cavity (101), the diaphragm structure (400) having a first connection portion (410) and a second connection portion (420), the first connection portion (410) being fixedly connected to a side of the valve body (100) close to the drive mechanism (300), the valve stem (200) passing through the diaphragm structure (400) and the valve stem (200) being fixedly connected to the second connection portion (420), and the diaphragm structure (400) being used to separate the drive mechanism (300) and the valve body (100).

3. The discharge valve (10) according to claim 2, characterized in that: The diaphragm structure (400) is a flexible structure and can deform following the movement of the valve stem (200).

4. The discharge valve (10) according to claim 2, characterized in that: The area of ​​the diaphragm structure (400) is larger than the bottom area of ​​the valve body (100).

5. The discharge valve (10) according to claim 1, characterized in that: The reset mechanism (600) comprises: a limit plate (610), fixedly connected to the portion of the valve stem (200) extending out of the valve body (100), and located between the valve body (100) and the drive mechanism (300); A reset elastic member (620) is arranged between the valve body (100) and the limit plate (610); when the power of the driving mechanism (300) is lower than a preset power value, the reset elastic member (620) drives the limit plate (610) to move, thereby causing the valve stem (200) to move.

6. The discharge valve (10) according to claim 1, characterized in that: Also includes: The sealing structure (700) is arranged on a side of the valve flap (500) close to the feed port (110).

7. The discharge valve (10) according to claim 6, characterized in that: The sealing structure (700) comprises a first sealing structure (710) and a second sealing structure (720); the second sealing structure (720) is arranged relative to the first sealing structure (710) and close to the center of the valve flap (500).

8. The discharge valve (10) according to claim 6, characterized in that: The sealing structure (700) comprises a silicone member and a sealing layer coated outside the silicone member, wherein the sealing layer is polytetrafluoroethylene.

9. The discharge valve (10) according to claim 1, characterized in that: The driving mechanism (300) is a pneumatic driving mechanism, comprising: Drive structure (310); a valve stem positioning member (320) connected between the driving structure (310) and the valve stem (200), and the valve stem positioning member (320) is located on a side of the valve body (100) away from the feed port (110); The limiting member (330) is arranged on one side of the valve stem positioning member (320).

10. A sterile tank, characterized in that: include: A tank body (800) having a receiving cavity (810) therein; The discharge valve (10) according to any one of claims 1 to 9 is arranged at the bottom of the tank body (800), and one end of the valve body (100) close to the feed port (110) is connected to the tank body (800), and the driving mechanism (300) drives the valve stem (200) to move, thereby moving the valve flap (500) to separate or connect the cavity (101) and the accommodating cavity (810).

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