Antibiotic stop valve

Abstract

The utility model discloses an antibiotic stop valve, relates to the field of valves, and can solve the problems that in the prior art, there are many dead corners between a valve rod and a valve clack of an antibiotic stop valve, and contamination is prone to occurring. The antibiotic stop valve comprises a valve body, a supporting assembly connected to the valve body and a valve rod piece connected to the supporting assembly, the valve body comprises an opening and closing part, a first pipe integrally formed on one side of the opening and closing part and a second pipe integrally formed on the other side of the opening and closing part, and the opening and closing part is provided with an opening and closing cavity; a first channel communicated with a pipe cavity of the first pipe and a second channel communicated with a pipe cavity of the second pipe are formed in the bottom wall of an inner cavity of the opening and closing cavity, the valve rod piece comprises a valve rod connected to the supporting assembly and a valve clack integrally formed at one end of the valve rod and stretching into the opening and closing cavity, and the valve clack is used for blocking the first channel.

Description

Technical Field

[0001] The present application relates to the field of valves, and in particular to an antibiotic stop valve. Background Art

[0002] Antibiotic stop valves, also known as sanitary stop valves or pharmaceutical stop valves, are widely used in industries with high hygiene requirements such as biological fermentation, antibiotic production, biopharmaceuticals, and chemical pharmaceuticals. The key to the design of this type of valve is to meet strict hygiene standards and aseptic requirements to prevent contamination and ensure the purity of the product.

[0003] A Chinese patent document (Announcement No.: CN214404712U) discloses an antibiotic stop valve, which includes a valve body, a valve cover, a valve stem, a valve disc and a sealing assembly. The valve disc is connected to the valve stem through a valve disc cover, and a stop washer and an O-ring are provided at the connection. Due to the large number of connection structures between the valve disc cover and the valve stem, installation gaps are easily formed, resulting in multiple dead corners. These dead corners are difficult to clean thoroughly, and are prone to breed bacteria and microorganisms, leading to the risk of bacterial contamination. Utility Model Content

[0004] To this end, the present application provides an antibiotic stop valve to solve the problem in the prior art that there are many dead angles between the valve stem and the valve disc of the antibiotic stop valve, which is prone to bacterial contamination.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An antibiotic stop valve comprises a valve body, a supporting assembly connected to the valve body and a valve stem connected to the supporting assembly, the valve body comprising an opening and closing portion, a first tube integrally formed on one side of the opening and closing portion and a second tube integrally formed on the other side of the opening and closing portion, the opening and closing portion having an opening and closing cavity, the inner cavity bottom wall of the opening and closing cavity being respectively provided with a first channel connected to the lumen of the first tube and a second channel connected to the lumen of the second tube, the valve stem comprising a valve stem connected to the supporting assembly and a valve flap integrally formed on one end of the valve stem and extending into the opening and closing cavity, the valve flap being used to block the first channel.

[0007] Optionally, the bottom of the valve flap is connected to a sealing gasket for pressing against the bottom wall of the inner cavity of the opening and closing cavity, and the bottom of the valve flap is rotatably connected to a locking nut for pressing the sealing gasket against the valve flap, and a pressure plate is connected between the locking nut and the sealing gasket, and the pressure plate is sleeved on the locking nut.

[0008] Optionally, the top of the opening and closing part is open, and the supporting assembly includes a valve cover sealing the opening of the opening and closing part, a bracket sleeved on the valve cover and abutting against the top of the valve cover, and a pressure cover sleeved on the bracket and used to press the valve cover to the opening and closing part through the bracket, and the pressure cover is also sleeved on the outer wall of the opening and closing part, and the pressure cover is provided with a threaded hole connected to a locking screw so that the locking screw can be rotated and pressed against the outer wall of the opening and closing part, and the supporting assembly is provided with a through hole for the valve stem to pass through, and the through hole includes a threaded section opened on the bracket and threadedly connected to the valve stem, and a through section opened on the valve cover and connected to the threaded section.

[0009] Optionally, part of the valve cover extends into the opening and closing cavity, and the part extending into the opening and closing cavity abuts against the inner wall of the opening and closing cavity, and the valve cover is provided with a first sealing ring groove for sleeve-mounting a first sealing ring, and the first sealing ring abuts against the inner wall of the opening and closing cavity; the inner wall of the through section is provided with a second sealing ring groove for sleeve-mounting a second sealing ring, and the second sealing ring abuts against the outer wall of the valve stem.

[0010] Optionally, a sealing groove communicating with the through section is provided on the top of the valve cover, and the sealing groove and the bracket form a sealing cavity for filling a sealing packing, and the sealing packing is arranged on the peripheral side of the valve stem.

[0011] Optionally, an elastic member is connected between the top of the sealing filler and the bracket, and an outer wall of the bracket is provided with a leakage hole penetrating to the outer wall of the valve cover.

[0012] Optionally, the elastic member is a disc spring.

[0013] Optionally, one end of the valve stem away from the valve disc extends out of the threaded section, and the extended end is connected to a hand wheel for facilitating manual rotation of the valve stem.

[0014] Compared with the prior art, this application has at least the following beneficial effects:

[0015] When the valve needs to be opened or closed, the valve stem drives the integrated valve disc to move up and down to achieve the opening and closing operation. The valve disc extends into the opening and closing cavity. When the valve disc moves downward, the bottom of the valve disc will press against the bottom wall of the inner cavity of the opening and closing cavity, blocking the first channel and cutting off the flow of the medium; when the valve disc moves upward, the first channel is opened, and the medium can flow to the second channel through the opening and closing cavity. Among them, the valve stem and the valve disc are integrated, the structure is simple, the number of parts is reduced, and the multiple connection structures between the valve disc and the valve stem in the traditional structure are eliminated, the gaps and dead corners caused by the connection parts are avoided, and the risk of bacterial contamination is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more intuitively illustrate the prior art and the present application, several exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0017] Figure 1 A schematic diagram of the overall structure of an antibiotic stop valve provided in one embodiment of the present application;

[0018] Figure 2 A schematic diagram of the overall structure of an antibiotic stop valve provided in one embodiment of the present application;

[0019] Figure 3 for Figure 2 Schematic diagram of part of the structure.

[0020] Description of reference numerals:

[0021] 1. Valve body; 11. Opening and closing part; 111. Opening and closing cavity; 12. First tube; 121. First channel; 13. Second tube; 131. Second channel; 2. Valve stem; 21. Valve stem; 22. Valve disc; 221. Sealing gasket; 222. Locking nut; 223. Pressure plate; 23. Handwheel; 3. Support assembly; 31. Valve cover; 311. First sealing ring; 312. Through section; 313. Sealing packing; 314. Elastic member; 315. Second sealing ring; 32. Bracket; 321. Threaded section; 322. Leakage hole; 33. Pressure cover; 331. Locking screw. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0024] refer to Figure 1-3The present application discloses an antibiotic stop valve, comprising a valve body 1, a support assembly 3 connected to the valve body 1 and a valve stem 2 connected to the support assembly 3, the valve body 1 comprising an opening and closing portion 11, a first tube 12 integrally formed on one side of the opening and closing portion 11 and a second tube 13 integrally formed on the other side of the opening and closing portion 11, the opening and closing portion 11 having an opening and closing cavity 111, the inner cavity bottom wall of the opening and closing cavity 111 respectively opening a first channel 121 connected to the lumen of the first tube 12 and a second channel 131 connected to the lumen of the second tube 13, the valve stem 2 comprising a valve stem 21 connected to the support assembly 3 and a valve flap 22 integrally formed at one end of the valve stem 21 and extending into the opening and closing cavity 111, the valve flap 22 being used to block the first channel 121.

[0025] When the valve needs to be opened or closed, the valve stem 21 drives the integrated valve flap 22 to move up and down, thereby realizing the opening and closing operation. The valve flap 22 extends into the opening and closing cavity 111. When the valve flap 22 moves downward, the bottom of the valve flap 22 will press against the bottom wall of the inner cavity of the opening and closing cavity 111, blocking the first channel 121 and cutting off the flow of the medium; when the valve flap 22 moves upward, the first channel 121 is opened, and the medium can flow to the second channel 131 through the opening and closing cavity 111. Among them, the valve stem 21 and the valve flap 22 are integrated, the structure is simple, the number of parts is reduced, and the multiple connection structures between the valve flap 22 and the valve stem 21 in the traditional structure are eliminated, the gaps and dead angles caused by the connection parts are avoided, and the risk of bacterial contamination is reduced.

[0026] In some embodiments, the valve stem 21 and the valve flap 22 can be formed by machining rather than traditional casting, which further improves the surface accuracy of the parts and reduces the polishing requirements and production costs.

[0027] The bottom of the valve flap 22 is connected to a sealing gasket 221 for pressing against the bottom wall of the inner cavity of the opening and closing cavity 111. The bottom of the valve flap 22 is rotatably connected to a locking nut 222 for pressing the sealing gasket 221 against the valve flap 22. A pressure plate 223 is connected between the locking nut 222 and the sealing gasket 221, and the pressure plate 223 is sleeved on the locking nut 222.

[0028] The sealing gasket 221 can improve the sealing effect, ensure that the valve can provide reliable sealing performance when opening and closing, and effectively prevent medium leakage; through the design of the locking nut 222 and the pressure plate 223, the sealing gasket 221 can be firmly fixed on the valve disc 22, avoiding the sealing gasket 221 from loosening or displacement during use.

[0029] The top of the opening and closing part 11 is open, and the support assembly 3 includes a valve cover 31 that seals the open part of the opening and closing part 11, a bracket 32 ​​that is sleeved on the valve cover 31 and abuts against the top of the valve cover 31, and a pressure cover 33 that is sleeved on the bracket 32 ​​and is used to press the valve cover 31 to the opening and closing part 11 through the bracket 32. The pressure cover 33 is also sleeved on the outer wall of the opening and closing part 11. The pressure cover 33 is provided with a threaded hole connected to a locking screw 331 so that the locking screw 331 can be rotated and pressed against the outer wall of the opening and closing part 11. The support assembly 3 is provided with a through hole for the valve stem 21 to pass through. The through hole includes a threaded section 321 that is opened on the bracket 32 ​​and threadedly connected to the valve stem 21, and a through section 312 that is opened on the valve cover 31 and communicates with the threaded section 321.

[0030] The valve stem 21 can be extended and retracted up and down by rotating the thread; there is no need to set a gasket between the valve cover 31, the bracket 32, and the pressure cover 33. The pressure cover 33 is pressed against the outer wall of the opening and closing part 11 by the locking screw 331, and then the valve cover 31 is pressed against the opening and closing part 11 by the bracket 32, thereby ensuring the accuracy of the installation. In the traditional technology, the gasket is prone to deviation in the installation of the corresponding parts due to installation errors or wear, causing problems such as the inclination of the valve stem 21, thereby affecting the sealing effect. The present application ensures the precise alignment between the valve stem 21 and the valve cover 31 and the bracket 32 ​​by eliminating the gasket, thereby effectively improving the sealing effect.

[0031] The valve cover 31 partially extends into the opening and closing cavity 111, and the part extending into the opening and closing cavity 111 abuts against the inner wall of the opening and closing cavity 111. The valve cover 31 is provided with a first sealing ring groove for sleeve-mounting the first sealing ring 311, and the first sealing ring 311 abuts against the inner wall of the opening and closing cavity 111; the inner wall of the through section 312 is provided with a second sealing ring groove for sleeve-mounting the second sealing ring 315, and the second sealing ring 315 abuts against the outer wall of the valve stem 21. The provision of the first sealing ring 311 and the second sealing ring 315 improves the sealing performance of the valve, avoids overflow and leakage of the medium, and ensures the reliability of the valve in an environment with high pressure and high sanitation requirements.

[0032] A sealing groove communicating with the through section 312 is formed on the top of the valve cover 31 . The sealing groove and the bracket 32 ​​form a sealing cavity for filling a sealing packing 313 . The sealing packing 313 is arranged on the circumference of the valve stem 21 .

[0033] Since the valve stem 21 needs to move up and down during operation, it is easy for the medium to overflow along the valve stem 21 from the inner wall of the valve stem 21 and the through section 312. The sealing packing 313 is located on the peripheral side of the valve stem 21 and can cooperate with the second sealing ring 315 to further improve the sealing performance when the valve stem 21 moves.

[0034] In some embodiments, the sealing filler 313 may be flexible graphite, PTFE (polytetrafluoroethylene) or other materials with good elasticity and chemical resistance.

[0035] An elastic member 314 is connected between the top of the sealing packing 313 and the bracket 32 ​​, and a leakage hole 322 penetrating through the outer wall of the valve cover 31 is formed on the outer wall of the bracket 32 ​​.

[0036] The elastic member 314 squeezes the sealing packing 313 so that it always closely fits the outer wall of the valve stem 21 during the movement of the valve stem 21, thereby forming a dynamic seal and further improving the sealing performance of the valve. In addition, the leakage hole 322 on the outer wall of the bracket 32 ​​is designed so that when the sealing packing 313 fails or leaks, the medium will overflow from the small gap between the bracket 32 ​​and the valve cover 31 to the leakage hole 322, which can be handled in time.

[0037] The elastic member 314 is a disc spring.

[0038] The end of the valve stem 21 away from the valve flap 22 extends out of the threaded section 321, and the extended end is connected to a hand wheel 23 for manually rotating the valve stem 21. By rotating the hand wheel 23, the user can easily drive the valve stem 21 up and down, thereby realizing the opening and closing operation of the valve flap 22.

[0039] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0040] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. An antibiotic stop valve, characterized in that: The valve body comprises a valve body, a supporting assembly connected to the valve body and a valve stem connected to the supporting assembly, the valve body comprises an opening and closing portion, a first tube integrally formed on one side of the opening and closing portion and a second tube integrally formed on the other side of the opening and closing portion, the opening and closing portion has an opening and closing cavity, the inner cavity bottom wall of the opening and closing cavity is respectively provided with a first channel connected to the lumen of the first tube and a second channel connected to the lumen of the second tube, the valve stem comprises a valve stem connected to the supporting assembly and a valve flap integrally formed on one end of the valve stem and extending into the opening and closing cavity, the valve flap is used to block the first channel.

2. The antibiotic stop valve according to claim 1, characterized in that: The bottom of the valve flap is connected to a sealing gasket for pressing against the bottom wall of the inner cavity of the opening and closing cavity. The bottom of the valve flap is rotatably connected to a locking nut for pressing the sealing gasket against the valve flap. A pressure plate is connected between the locking nut and the sealing gasket, and the pressure plate is sleeved on the locking nut.

3. The antibiotic stop valve according to claim 1, characterized in that: The top of the opening and closing part is open, and the supporting assembly includes a valve cover that seals the opening of the opening and closing part, a bracket that is sleeved on the valve cover and abuts against the top of the valve cover, and a pressure cover that is sleeved on the bracket and is used to press the valve cover to the opening and closing part through the bracket. The pressure cover is also sleeved on the outer wall of the opening and closing part, and the pressure cover is provided with a threaded hole connected to a locking screw so that the locking screw can be rotated and pressed against the outer wall of the opening and closing part. The supporting assembly is provided with a through hole for the valve stem to pass through, and the through hole includes a threaded section that is opened on the bracket and threadedly connected to the valve stem, and a through section that is opened on the valve cover and communicates with the threaded section.

4. The antibiotic stop valve according to claim 3, characterized in that: Part of the valve cover extends into the opening and closing cavity, and the part extending into the opening and closing cavity abuts against the inner wall of the opening and closing cavity. The valve cover is provided with a first sealing ring groove for sleeve-mounting a first sealing ring, and the first sealing ring abuts against the inner wall of the opening and closing cavity; the inner wall of the through section is provided with a second sealing ring groove for sleeve-mounting a second sealing ring, and the second sealing ring abuts against the outer wall of the valve stem.

5. The antibiotic stop valve according to claim 4, characterized in that: A sealing groove communicating with the through section is formed on the top of the valve cover. The sealing groove and the bracket form a sealing cavity for filling a sealing filler. The sealing filler is arranged on the peripheral side of the valve stem.

6. The antibiotic stop valve according to claim 5, characterized in that: An elastic member is connected between the top of the sealing filler and the bracket, and a leakage hole penetrating to the outer wall of the valve cover is opened on the outer wall of the bracket.

7. The antibiotic stop valve according to claim 6, characterized in that: The elastic member is a disc spring.

8. The antibiotic stop valve according to claim 3, characterized in that: One end of the valve stem away from the valve disc extends out of the threaded section, and the extended end is connected to a hand wheel for facilitating manual rotation of the valve stem.

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