Sterile diaphragm valve

Abstract

The utility model discloses a sterile diaphragm valve, and relates to the technical field of diaphragm valves. The sterile diaphragm valve comprises a valve body, a valve cavity formed in the valve body, an inlet, an outlet, a valve seat and an actuator, the inlet and the outlet are formed in the valve body, the valve seat and the actuator are arranged in the valve cavity, the valve seat is internally connected into the valve cavity and divides the valve cavity into a first cavity and a second cavity, the inlet and the outlet are communicated with the first cavity, and an execution groove is formed in the valve seat; the execution groove is communicated with the second cavity, the execution groove and the second cavity are combined to form a working cavity, and the actuator is located in the working cavity. According to the sterile diaphragm valve, the valve seat internally connected into the valve cavity can completely isolate the first cavity from the working cavity, liquid in the first cavity is effectively prevented from permeating into the working cavity, damage to the actuator is prevented, and breeding of bacteria in the working cavity is reduced.

Description

Technical Field

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

[0002] In the existing diaphragm valve, the working chamber where the actuator is located is not completely isolated from the liquid chamber where the valve seat is located. During the opening process of the diaphragm valve, liquid may penetrate into and remain in the working chamber, which may not only easily cause damage to the actuator, but also the residual liquid may breed bacteria. The grown bacteria may easily penetrate into the liquid chamber and cause the liquid to be contaminated. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the present application provides an aseptic diaphragm valve that can completely isolate a liquid chamber from a working chamber and prevent bacterial growth.

[0004] The aseptic diaphragm valve provided in this application adopts the following technical solution:

[0005] A sterile diaphragm valve comprises a valve body, a valve cavity opened in the valve body, an inlet and an outlet opened on the valve body, a valve seat and an actuator arranged in the valve cavity, the valve seat is connected to the valve cavity and divides the valve cavity into a first chamber and a second chamber, the inlet and the outlet are respectively communicated with the first chamber, an actuator groove is opened in the valve seat, the actuator groove is communicated with the second chamber, the actuator groove and the second chamber are combined into a working chamber, and the actuator is located in the working chamber.

[0006] By adopting the above technical solution, the valve seat connected in the valve cavity can completely isolate the first chamber from the working chamber, effectively preventing the liquid in the first chamber from penetrating into the working chamber, which not only prevents damage to the actuator but also reduces the growth of bacteria in the working chamber.

[0007] In a specific possible implementation manner, the valve seat includes a seat body inscribed in the valve cavity, and a diaphragm portion coaxially arranged on the seat body for shielding the inlet, the diaphragm portion is annular and its outer peripheral surface is arc-shaped.

[0008] By adopting the above technical solution, after the diaphragm part is separated from the inlet, the arc-shaped outer peripheral surface can make the liquid introduced into the inlet flow through the diaphragm part more smoothly, thereby preventing bacteria from growing on the diaphragm part due to residual liquid.

[0009] In a specific possible implementation manner, the outer diameter of the diaphragm portion gradually increases along a direction away from the inlet.

[0010] By adopting the above technical solution, the smoothness of liquid flow is further improved, and liquid residue on the diaphragm part is effectively avoided.

[0011] In a specific possible implementation manner, a liquid separation platform is coaxially arranged on the diaphragm portion, and the liquid separation platform is in a truncated cone shape and its maximum outer diameter is smaller than the diameter of the inlet.

[0012] By adopting the above technical solution, after the diaphragm part is separated from the inlet, the liquid separation table can disperse the instantaneous impact force of the external liquid when the inlet is first opened, thereby preventing the valve seat from being damaged by the impact of the external liquid; at the same time, the liquid separation table can effectively prevent the liquid from accumulating on the surface of the diaphragm part, thereby preventing the surface of the diaphragm part from being damaged due to long-term accumulation of liquid or accumulation of corrosive liquid.

[0013] In a specific possible implementation manner, the valve seat further comprises a retractable corrugated portion disposed between the seat body and the diaphragm portion, the corrugated portion comprises a plurality of corrugated sections, the corrugated sections are annular and their outer circumferential surfaces are arc-shaped.

[0014] By adopting the above technical solution, when the diaphragm part is deformed due to long-term use, resulting in a weakening of its sealing effect, the corrugated part can press against the diaphragm part under the axial expansion and contraction action, provide displacement compensation for the diaphragm part, and extend the service life of the diaphragm valve; at the same time, when the diaphragm part shifts to one side when moving due to long-term use, resulting in it being unable to completely cover the inlet, the corrugated part can adjust the moving direction of the diaphragm part under the action of its radial elastic force, so that the diaphragm part can completely cover the inlet, ensuring the cut-off effect of the diaphragm valve.

[0015] In a specific possible implementation manner, the diameter of the corrugated section is smaller than the diameter of the diaphragm portion.

[0016] By adopting the above technical solution, the diaphragm part can serve as a shield for the corrugated part, thereby preventing the liquid from remaining on the corrugated part after flowing through the diaphragm part, and preventing bacteria from growing on the corrugated part due to the residual liquid.

[0017] In a specific possible implementation mode, the seat body, the corrugated portion and the diaphragm portion are integrally formed.

[0018] By adopting the above technical solution, the isolation effect of the valve seat on the first chamber and the working chamber is further improved, and the growth of bacteria in the working chamber is completely prevented.

[0019] In a specific possible implementation scheme, the aseptic diaphragm valve also includes a mounting plate connected to the valve cavity, the seat body is mounted on the mounting plate, the actuator includes a device body and a valve stem connected to the output end of the device body, the device body is located in the second chamber, and the valve stem passes through the mounting plate and the corrugated part in sequence and then is connected to the diaphragm part.

[0020] By adopting the above technical solution, the valve seat can be effectively supported, which not only improves the shielding effect of the valve seat on the inlet, but also prolongs the service life of the valve seat.

[0021] In a specific possible implementation manner, the aseptic diaphragm valve further includes a spring sleeved on the valve stem, the spring is located in the execution groove and two ends of the spring are respectively connected to the diaphragm portion and the mounting plate.

[0022] By adopting the above technical solution, the spring can serve as an auxiliary reset of the valve seat, which can not only reduce the driving pressure of the actuator, but also when the diaphragm part is deformed due to long-term use, resulting in weakened sealing effect, the spring can resist the diaphragm part under the action of its own elastic force, provide displacement compensation for the diaphragm part, and extend the service life of the diaphragm valve.

[0023] In a specific possible implementation manner, the opening direction of the inlet is consistent with the axial direction of the valve seat, and the opening direction of the outlet is perpendicular to the axial direction of the valve seat.

[0024] By adopting the above technical solution, the matching degree between the valve seat and the inlet is effectively guaranteed, and the cut-off effect of the diaphragm valve is improved.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] The aseptic diaphragm valve of the present application, whose valve seat connected to the valve cavity can completely isolate the first chamber from the working chamber, effectively preventing the liquid in the first chamber from penetrating into the working chamber, not only preventing damage to the actuator, but also reducing the growth of bacteria in the working chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a partial cross-sectional schematic diagram of the aseptic diaphragm valve of the embodiment of the present application when it is in a closed state.

[0028] Figure 2 It is a schematic axial cross-sectional view of the aseptic diaphragm valve of an embodiment of the present application when it is in a closed state.

[0029] Figure 3 It is a partial cross-sectional schematic diagram of the aseptic diaphragm valve of the embodiment of the present application when it is in an open state.

[0030] Description of reference numerals:

[0031] 1. Valve body; 2. Valve cavity; 21. First chamber; 22. Second chamber; 3. Inlet; 4. Outlet; 5. Valve seat; 51. Actuator groove; 52. Seat body; 53. Diaphragm part; 54. Liquid separation table; 55. Bellows part; 551. Bellows section; 6. Actuator; 61. Actuator body; 62. Valve stem; 7. Mounting plate; 8. Spring. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] join Figure 1-3 As shown, there is shown an aseptic diaphragm valve, including a valve body 1, a valve cavity 2 opened in the valve body 1, an inlet 3 and an outlet 4 opened on the valve body 1, a valve seat 5 and an actuator 6 arranged in the valve cavity 2, the valve seat 5 is connected to the valve cavity 2 and divides the valve cavity 2 into a first chamber 21 and a second chamber 22, the inlet 3 and the outlet 4 are respectively connected to the first chamber 21, an actuator groove 51 is opened in the valve seat 5, the actuator groove 51 is connected to the second chamber 22, the actuator groove 51 and the second chamber 22 are combined into a working chamber, and the actuator 6 is located in the working chamber.

[0034] The inlet 3 is used to introduce liquid into the first chamber 21, and the outlet 4 is used to let liquid out of the first chamber 21. The valve seat 5 connected to the valve chamber 2 can completely isolate the first chamber 21 from the working chamber, effectively preventing the liquid in the first chamber 21 from penetrating into the working chamber, which not only prevents damage to the actuator 6, but also reduces the growth of bacteria in the working chamber.

[0035] In this embodiment, the valve seat 5 includes a seat body 52 connected to the valve cavity 2, and a diaphragm portion 53 coaxially arranged on the seat body 52 for shielding the inlet 3. The diaphragm portion 53 is annular and its outer peripheral surface is arc-shaped. The outer diameter of the diaphragm portion 53 gradually increases in the direction away from the inlet 3.

[0036] After the diaphragm portion 53 is separated from the inlet 3 , the arc-shaped outer peripheral surface enables the liquid introduced through the inlet 3 to flow through the diaphragm portion 53 more smoothly, thereby preventing bacteria from growing on the diaphragm portion 53 due to residual liquid.

[0037] Furthermore, a liquid separation platform 54 is coaxially arranged on the diaphragm portion 53, and the liquid separation platform 54 is in a truncated cone shape and its maximum outer diameter is smaller than the diameter of the inlet 3. After the diaphragm portion 53 is separated from the inlet 3, the liquid separation platform 54 can disperse the instantaneous impact force of the external liquid when the inlet 3 is initially opened, thereby preventing the valve seat 5 from being damaged by the impact of the external liquid; at the same time, the liquid separation platform 54 can effectively prevent the liquid from accumulating on the surface of the diaphragm portion 53, thereby preventing the surface of the diaphragm portion 53 from being damaged due to long-term accumulation of liquid or accumulation of corrosive liquid.

[0038] In this embodiment, the valve seat 5 also includes a retractable corrugated portion 55 arranged between the seat body 52 and the diaphragm portion 53. The corrugated portion 55 includes a plurality of corrugated sections 551. The corrugated sections 551 are annular and their outer peripheral surfaces are arc-shaped. The diameter of the corrugated sections 551 is smaller than the diameter of the diaphragm portion 53.

[0039] Through the above-mentioned arrangement, when the diaphragm portion 53 is aged and deformed due to long-term use, resulting in a weakening of its sealing effect, the corrugated portion 55 can resist the diaphragm portion 53 under the axial expansion and contraction action thereof, thereby providing displacement compensation for the diaphragm portion 53 and extending the service life of the diaphragm valve; at the same time, when the diaphragm portion 53 is offset to one side during movement due to long-term use, resulting in it being unable to completely cover the inlet 3, the corrugated portion 55 can adjust the moving direction of the diaphragm portion 53 under the action of its radial elastic force, so that the diaphragm portion 53 can completely cover the inlet 3, thereby ensuring the cut-off effect of the diaphragm valve; and the diaphragm portion 53 can serve as a shield for the corrugated portion 55, thereby preventing liquid from remaining on the corrugated portion 55 after flowing through the diaphragm portion 53, thereby preventing bacteria from growing on the corrugated portion 55 due to residual liquid.

[0040] In this embodiment, the seat body 52, the corrugated portion 55 and the diaphragm portion 53 are integrally formed. The integrally formed seat body 52, the corrugated portion 55 and the diaphragm portion 53 further enhance the isolation effect of the valve seat 5 on the first chamber 21 and the working chamber, and completely prevent the growth of bacteria in the working chamber.

[0041] Combination Figure 2 As shown, the aseptic diaphragm valve further includes a mounting plate 7 connected to the valve cavity 2, the seat body 52 is mounted on the mounting plate 7, the actuator 6 includes an actuator body 61, a valve stem 62 connected to the output end of the actuator body 61, the actuator body 61 is located in the second chamber 22, the valve stem 62 passes through the mounting plate 7 and the corrugated portion 55 in sequence and is connected to the diaphragm portion 53, and a spring 8 is sleeved on the valve stem 62, the spring 8 is located in the actuator groove 51 and its two ends are respectively connected to the diaphragm portion 53 and the mounting plate 7. Among them, the actuator body 61 is a cylinder.

[0042] Through the above arrangement, the spring 8 can serve as an auxiliary reset device for the valve seat 5, which can not only reduce the driving pressure of the actuator 6, but also when the diaphragm part 53 ages and deforms due to long-term use, resulting in a weakened sealing effect, the spring 8 can resist the diaphragm part 53 under the action of its own elastic force, provide displacement compensation for the diaphragm part 53, and extend the service life of the diaphragm valve.

[0043] In this embodiment, the opening direction of the inlet 3 is consistent with the axial direction of the valve seat 5, and the opening direction of the outlet 4 is perpendicular to the axial direction of the valve seat 5. In this way, the matching degree between the valve seat 5 and the inlet 3 can be effectively ensured, and the cut-off effect of the diaphragm valve is improved.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An aseptic diaphragm valve, comprising a valve body (1), a valve cavity (2) provided in the valve body (1), an inlet (3) and an outlet (4) provided on the valve body (1), a valve seat (5) provided in the valve cavity (2), and an actuator (6), characterized in that: The valve seat (5) is connected to the valve cavity (2) and divides the valve cavity (2) into a first chamber (21) and a second chamber (22); the inlet (3) and the outlet (4) are respectively connected to the first chamber (21); an execution groove (51) is provided in the valve seat (5); the execution groove (51) is connected to the second chamber (22); the execution groove (51) and the second chamber (22) are combined into a working chamber; the actuator (6) is located in the working chamber.

2. The aseptic diaphragm valve according to claim 1, characterized in that: The valve seat (5) comprises a seat body (52) inscribed in the valve cavity (2), and a diaphragm portion (53) coaxially arranged on the seat body (52) for shielding the inlet (3); the diaphragm portion (53) is annular and its outer peripheral surface is arc-shaped.

3. The aseptic diaphragm valve according to claim 2, characterized in that: The outer diameter of the diaphragm portion (53) gradually increases in a direction away from the inlet (3).

4. The aseptic diaphragm valve according to claim 2, characterized in that: A liquid separation platform (54) is coaxially arranged on the diaphragm portion (53); the liquid separation platform (54) is in a truncated cone shape and has a maximum outer diameter that is smaller than the diameter of the inlet (3).

5. The aseptic diaphragm valve according to claim 2, characterized in that: The valve seat (5) further comprises a retractable corrugated portion (55) disposed between the seat body (52) and the diaphragm portion (53), wherein the corrugated portion (55) comprises a plurality of corrugated sections (551), wherein the corrugated sections (551) are annular and have an arc-shaped outer peripheral surface.

6. The aseptic diaphragm valve according to claim 5, characterized in that: The diameter of the bellows section (551) is smaller than the diameter of the diaphragm portion (53).

7. The aseptic diaphragm valve according to claim 5, characterized in that: The seat body (52), the corrugated portion (55) and the diaphragm portion (53) are integrally formed.

8. The aseptic diaphragm valve according to claim 5, characterized in that: The aseptic diaphragm valve also includes a mounting plate (7) internally connected to the valve cavity (2), the seat body (52) is mounted on the mounting plate (7), the actuator (6) includes an actuator body (61), and a valve stem (62) connected to the output end of the actuator body (61), the actuator body (61) is located in the second chamber (22), and the valve stem (62) passes through the mounting plate (7) and the corrugated part (55) in sequence and is connected to the diaphragm part (53).

9. The aseptic diaphragm valve according to claim 8, characterized in that: The aseptic diaphragm valve further comprises a spring (8) sleeved on the valve stem (62); the spring (8) is located in the execution groove (51) and its two ends are respectively connected to the diaphragm portion (53) and the mounting plate (7).

10. The aseptic diaphragm valve according to claim 1, characterized in that: The opening direction of the inlet (3) is consistent with the axial direction of the valve seat (5), and the opening direction of the outlet (4) is perpendicular to the axial direction of the valve seat (5).

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