Sterile stop valve

Abstract

The utility model discloses a sterile stop valve, and belongs to the technical field of valves. The valve mainly comprises a valve body; the control mechanism is installed at the upper end of the valve body and comprises a valve seat, a valve rod, a valve rod, a valve rod and a control mechanism, and the valve seat is installed at the upper end of the valve body; the air cylinder is mounted at the upper end of the valve seat; the small clamping shaft is fixedly connected with the output end of the air cylinder; the valve rod is mounted at one end of the small clamping shaft; the diaphragm piece is mounted at the joint of the valve rod and the small clamping shaft; and the valve core is arranged at the lower end of the valve rod. According to the sterile stop valve, the diaphragm piece is arranged, so that the effect of preventing medium pollution in the movement process of the valve rod is achieved.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a sterile stop valve. Background Art

[0002] Aseptic stop valve, also known as cut-off valve, is one of the most widely used valves. It is mainly used to control the flow of fluid, to achieve fluid cut-off or regulation. In sterile environments, such as pharmaceuticals, biotechnology, food processing and other industries, the application of aseptic stop valves is particularly important to ensure the sterility of the fluid and the safety of the system.

[0003] For example, the patent with publication number CN211288789U discloses a sterile stop valve. The patent uses a circulating pump in the flushing mechanism to circulate the cleaning liquid to repeatedly clean the inside of the stop valve body. In combination with the vent hole in the valve stem to blow air into the inside of the stop valve body, the cleaning liquid randomly hits the inner wall of the stop valve body, thereby achieving a better cleaning effect on the inside of the stop valve body.

[0004] However, in actual use, the valve stem needs to move up and down to control the cutoff and flow of the two pipe openings of the valve body. This movement mechanism itself may cause the valve stem to move between the external environment and the medium, increasing the chance of contact with the outside. After the valve stem contacts the outside and then contacts the medium, external contaminants may be brought into the medium, thereby causing medium contamination.

[0005] Therefore, it is necessary to provide a sterile stop valve to solve the above problems.

[0006] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute prior art. Summary of the Invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a sterile stop valve, which solves the problem that during the movement of the valve stem, part of the valve stem will come into contact with the outside and then come into contact with the medium, thereby contaminating the medium.

[0008] The technical solution adopted by the present application to solve the technical problem is: a sterile stop valve, comprising:

[0009] Valve body;

[0010] A control mechanism is mounted on the upper end of the valve body and is used to control the opening and closing of the stop valve. The control mechanism includes:

[0011] a valve seat mounted on an upper end of the valve body;

[0012] a cylinder mounted on an upper end of the valve seat;

[0013] A clamping shaft, the clamping shaft being fixedly connected to the output end of the cylinder;

[0014] a valve stem mounted on one end of the clamping shaft;

[0015] A diaphragm, which is installed at the connection between the valve stem and the clamping shaft;

[0016] A valve core is installed at the lower end of the valve stem.

[0017] Furthermore, a feed port is fixedly provided on the valve body, a discharge pipe is fixedly provided on the lower end of the valve body, the valve core is located directly above the discharge pipe, and the front end of the valve core is in contact with the discharge pipe.

[0018] Furthermore, a clamp is detachably provided at the connection between the valve seat and the valve body, and the output end of the cylinder passes through the valve seat and extends to the interior of the valve seat.

[0019] Furthermore, a fixing ring is fixedly provided on the outside of the diaphragm, and the fixing ring is fixedly connected to the upper end of the valve body near the valve seat. A sealing ring is fixedly provided at the connection between the diaphragm and the clamping shaft. A diaphragm bracket is fixedly provided around the upper end of the diaphragm and the clamping shaft. A diaphragm filler is fixedly provided on the upper end of the diaphragm bracket. The diaphragm is fixedly provided directly above the valve stem, and an exhaust joint is fixedly provided on the upper end of the valve seat.

[0020] Furthermore, a filtering mechanism is fixedly provided at the lower end of the discharge pipe, and the filtering mechanism includes a filtering pipe fixedly provided at the lower end of the discharge pipe, and a filter net is detachably provided inside the filtering pipe.

[0021] Furthermore, a slot is provided on one side of the filter pipe, and a connecting ring is slidably provided on the slot, and the connecting ring is fixedly connected to one side of the filter screen, and the outer wall of the connecting ring fits with the inner wall of the slot, and a fixing plate is fixedly provided on the side of the connecting ring away from the filter screen, and the fixing plate is fixedly connected to the outer side of the connecting ring, and the fixing plate is fixedly connected to the outer side of the filter pipe by bolts, and a handle is fixedly provided on one side of the fixing plate.

[0022] The beneficial effect of the present application is that the present application provides an aseptic stop valve, which prevents medium contamination during the movement of the valve stem by providing a diaphragm.

[0023] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0025] Figure 1 This is an overall schematic diagram of a sterile stop valve in this application;

[0026] Figure 2 This is a schematic diagram of an explosion of a sterile stop valve in this application;

[0027] Figure 3 for Figure 1 A cross-sectional diagram of the control mechanism;

[0028] Figure 4 for Figure 1 Schematic diagram of the filtering mechanism;

[0029] Among them, the reference numerals in the figures are:

[0030] 1. Valve body; 2. Feed inlet; 3. Clamp; 4. Control mechanism; 40. Cylinder; 41. Valve seat; 42. Diaphragm packing; 43. Diaphragm bracket; 44. Sealing ring; 45. Diaphragm; 46. Clamping shaft; 47. Valve stem; 48. Valve core; 49. Exhaust connector; 5. Filter mechanism; 6. Feed pipe; 52. Filter pipe; 53. Slot; 54. Filter screen; 56. Fixing plate; 57. Connecting ring; 58. Handle. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0033] like Figure 1-Figure 2As shown, the present application provides an aseptic stop valve, including a valve body 1, which is the main structure of the entire aseptic stop valve and carries all other components. At the same time, a feed port 2 is fixedly provided on the valve body 1, and the feed port 2 is used to introduce fluid into the valve body 1 for use. A discharge pipe 6 is fixedly provided at the lower end of the valve body 1, and the discharge pipe 6 is used to discharge the fluid from the valve body 1 for use. The discharge pipe 6, the feed port 2 and the valve body 1 together provide a channel for the fluid;

[0034] A control mechanism 4 is installed at the upper end of the valve body 1. The control mechanism 4 is used to control the opening and closing of the stop valve. The control mechanism 4 includes a valve seat 41 fixedly arranged at the upper end of the valve body 1. At the same time, a clamp 3 is detachably provided at the connection between the valve seat 41 and the valve body 1. The clamp 3 is used to firmly connect the valve body 1 and the valve seat 41 together, so that the stop valve can be opened and closed smoothly.

[0035] At the same time, a cylinder 40 is fixedly provided on the upper end of the valve seat 41. The cylinder 40 is the power source of the control mechanism 4, generating a driving force to push the stop valve to open or close, and the output end of the cylinder 40 passes through the valve seat 41 and extends into the interior of the valve seat 41;

[0036] The output end of the cylinder 40 is connected to a valve stem 47 inside the valve seat 41. The valve stem 47 extends through the valve seat 41 to the inside of the valve body 1 and is fixedly connected to a valve core 48. The valve stem 47 is used to transmit the movement of the control mechanism 4 to the valve core 48, so that the valve core 48 controls the flow of fluid.

[0037] It should be noted that the valve core 48 is located directly above the discharge pipe 6, and the front end of the valve core 48 is in contact with the discharge pipe 6, so that when the cylinder 40 controls the valve stem 47 to move vertically downward, the valve core 48 can be driven to continuously approach the discharge pipe 6 until it is completely in contact with the discharge pipe 6, thereby closing the valve and preventing the fluid from passing through. Conversely, when the cylinder 40 controls the valve stem 47 to move vertically upward, the valve core 48 moves accordingly, so that the valve core 48 continuously moves away from the discharge pipe 6, thereby opening the stop valve and allowing the fluid to pass through.

[0038] like Figure 2-Figure 3 As shown, in order to prevent the valve stem 47 from partially contacting the outside and then contacting the medium during the vertical movement, thereby preventing the medium from being contaminated, a clamping shaft 46 is provided inside the valve seat 41 between the valve stem 47 and the output end of the cylinder 40. The clamping shaft 46 is used to connect the valve stem 47 to the output end.

[0039] A diaphragm 45 is fixedly provided at the connection between the clamping shaft 46 and the valve stem 47. The diaphragm 45 is used to isolate the valve stem 47 from contact with the outside. At the same time, the diaphragm 45 drives the clamping shaft 46 through the cylinder 40 to deform and control the movement of the valve stem 47 to open or close the valve.

[0040] A fixing ring (not shown) is fixedly provided on the outside of the diaphragm 45. The fixing ring is fixedly connected to the upper end of the valve body 1 near the valve seat 41 so that the diaphragm 45 can be deformed stably.

[0041] At the same time, a sealing ring 44 is fixedly provided at the connection between the diaphragm 45 and the clamping shaft 46. The sealing ring 44 is used to prevent the fluid from leaking into the valve seat 41. At the same time, a diaphragm bracket 43 is fixedly provided around the clamping shaft 46 at the upper end of the diaphragm 45. The diaphragm bracket 43 is used to support and fix the diaphragm 45 to ensure that it can correctly respond to the drive of the cylinder 40.

[0042] A diaphragm filler 42 is fixedly provided on the upper end of the diaphragm bracket 43. The diaphragm filler 42 is used to seal the gap between the clamping shaft 46 and the diaphragm 45, thereby preventing fluid leakage.

[0043] It should be noted that the diaphragm 45 is fixedly arranged just above the valve stem 47, so that the valve stem 47 is isolated from contact with the outside when it moves, thereby preventing the valve stem 47 from contacting the outside and then contacting the medium when the stop valve is opened or closed, thereby preventing the medium from being contaminated.

[0044] At the same time, when the cylinder 40 applies downward pressure, the clamping shaft 46 transmits the pressure to the diaphragm 45. At this time, the diaphragm 45 is subjected to the pressure of the clamping shaft 46, thereby elastically deforming vertically downward, thereby pushing the valve stem 47 and the valve core 48 to move vertically downward, thereby making the valve core 48 fit with the discharge pipe 6 and closing the pipe. Conversely, when the pressure is released, the diaphragm 45 returns to its original state, thereby driving the valve stem 47 and the valve core 48 to move vertically upward, thereby opening the stop valve.

[0045] An exhaust connector 49 is fixedly provided at the upper end of the valve seat 41. The exhaust connector 49 passes through the valve seat 41 and extends to the interior to facilitate exhausting the gas inside the valve seat 41, thereby ensuring the airtightness of the internal space of the valve seat 41 and the normal operation of the system.

[0046] like Figure 1 and Figure 4 As shown, in order to filter the fluid and prevent the fluid from contaminating the pipeline, a filtering mechanism 5 is fixedly provided at the lower end of the discharge pipeline 6. The filtering mechanism 5 is used to filter the fluid flowing through the stop valve;

[0047] The filtering mechanism 5 includes a filtering pipe 52 fixedly provided at the lower end of the feed pipe 6, and a filter screen 54 is detachably provided inside the filtering pipe 52, and the filter screen 54 is used to filter the fluid flowing through the stop valve;

[0048] At the same time, a slot 53 is opened on one side of the filter pipe 52, and a connecting ring 57 is slidably provided on the slot 53. The connecting ring 57 is fixedly connected to one side of the filter screen 54, so that the connecting ring 57 can drive the filter screen 54 to slide on the slot 53;

[0049] It should be noted that the outer wall of the connecting ring 57 is in contact with the inner wall of the slot 53, thereby preventing fluid leakage. At the same time, a fixing plate 56 is fixedly provided on the side of the connecting ring 57 away from the filter screen 54. The fixing plate 56 is fixedly connected to the outer side of the connecting ring 57. At the same time, the fixing plate 56 is fixedly connected to the outer side of the filter pipe 52 by bolts, thereby preventing fluid leakage and preventing the filter screen 54 from falling off.

[0050] A handle 58 is fixedly provided on one side of the fixing plate 56. The handle 58 is used to facilitate pulling the connecting ring 57 to drive the filter 54 to slide in the slot 53, thereby facilitating the operator to remove the filter 54 for use.

[0051] When the filter 54 needs to be cleaned, first close the valve to block the fluid flow, then remove the fixing plate 56, and finally pull the handle 58 to pull out the filter 54 for cleaning. After cleaning, install the filter 54 through the slot 53, and finally fix the fixing plate 56.

[0052] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A sterile stop valve, characterized by: include: Valve body (1); A control mechanism (4) is mounted on the upper end of the valve body (1). The control mechanism (4) is used to control the opening and closing of the stop valve. The control mechanism (4) includes: a valve seat (41), the valve seat (41) being mounted on the upper end of the valve body (1); a cylinder (40) mounted on an upper end of the valve seat (41); A clamping shaft (46) fixedly connected to the output end of the cylinder (40); A valve stem (47) mounted on one end of the clamping shaft (46); a diaphragm (45), the diaphragm (45) being mounted at the connection between the valve stem (47) and the clamping shaft (46); A valve core (48) is mounted on the lower end of the valve stem (47).

2. The aseptic stop valve according to claim 1, characterized in that: A feed port (2) is fixedly provided on the valve body (1), a discharge pipe (6) is fixedly provided at the lower end of the valve body (1), the valve core (48) is located directly above the discharge pipe (6), and the front end of the valve core (48) is in contact with the discharge pipe (6).

3. The aseptic stop valve according to claim 1, characterized in that: A clamp (3) is detachably provided at the connection between the valve seat (41) and the valve body (1), and the output end of the cylinder (40) passes through the valve seat (41) and extends into the interior of the valve seat (41).

4. The aseptic stop valve according to claim 1, characterized in that: A fixing ring is fixedly provided on the outside of the diaphragm (45), and the fixing ring is fixedly connected to the upper end of the valve body (1) near the valve seat (41). A sealing ring (44) is fixedly provided at the connection between the diaphragm (45) and the clamping shaft (46). A diaphragm bracket (43) is fixedly provided around the upper end of the diaphragm (45) and the clamping shaft (46). A diaphragm filler (42) is fixedly provided on the upper end of the diaphragm bracket (43). The diaphragm (45) is fixedly provided just above the valve stem (47), and an exhaust joint (49) is fixedly provided on the upper end of the valve seat (41).

5. The aseptic stop valve according to claim 2, characterized in that: A filter mechanism (5) is fixedly provided at the lower end of the discharge pipe (6), and the filter mechanism (5) comprises a filter pipe (52) fixedly provided at the lower end of the discharge pipe (6), and a filter screen (54) is detachably provided inside the filter pipe (52).

6. The aseptic stop valve according to claim 5, characterized in that: A slot (53) is provided on one side of the filter pipe (52), and a connecting ring (57) is slidably provided on the slot (53). The connecting ring (57) is fixedly connected to one side of the filter screen (54), and the outer wall of the connecting ring (57) is in contact with the inner wall of the slot (53). A fixing plate (56) is fixedly provided on the side of the connecting ring (57) away from the filter screen (54). The fixing plate (56) is fixedly connected to the outer side of the connecting ring (57). The fixing plate (56) is fixedly connected to the outer side of the filter pipe (52) by bolts, and a handle (58) is fixedly provided on one side of the fixing plate (56).

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