Spring type diaphragm valve

Abstract

The utility model relates to the technical field of diaphragm valves, and particularly discloses a spring type diaphragm valve which comprises a valve body, the valve body comprises an air inlet end, an air outlet end and a connecting end, the air inlet end is communicated with an air inlet, and the air outlet end is communicated with an air outlet; the main body mechanism comprises a center rod, a valve bonnet, a steel ball and a pressing shaft, a concave spherical surface is formed in the middle of the pressing shaft, the steel ball is placed in the concave spherical surface, the center rod abuts against the steel ball, a gasket is arranged at one end of the pressing shaft, a pressing ring is arranged at the other end of the pressing shaft, and a connecting hole is formed in the center of the pressing shaft; the diaphragm is adjacent to the air inlet, and the diaphragm abuts against the pressing shaft and the pressing ring; one end of the spring is connected with the gasket, and the other end of the spring is connected with the pressing ring; the sealing mechanism comprises a valve element and a valve clack; the diaphragm valve overcomes the defects that in the prior art, when the diaphragm valve is opened, due to the fact that the diaphragm is reset slowly or not completely, working performance is degraded, and when the diaphragm valve is closed, sealing is not complete.

Description

Technical Field

[0001] The utility model relates to the field of diaphragm valves, in particular to a spring type diaphragm valve. Background Art

[0002] A diaphragm valve is an important fluid control device, which is widely used in various industrial and medical fields. Its main characteristics are simple structure, good sealing performance, corrosion resistance and wear resistance. These characteristics make the diaphragm valve widely used in gas and fluid control systems.

[0003] The diaphragm valve controls the on / off of gas / fluid through the movement of the diaphragm. As an efficient and reliable fluid control device, it plays an important role in many industries.

[0004] In the prior art, when the diaphragm valve is opened, usually the diaphragm in the diaphragm valve resets slowly / incompletely. This phenomenon will cause the working performance of the diaphragm valve to decay, thus affecting the intake efficiency. At the same time, in the prior art, the air tightness of the diaphragm valve is insufficient, which may cause defects such as gas leakage. Summary of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] The problem to be solved by the utility model is to provide a spring type diaphragm valve to overcome the defects that when the diaphragm valve is opened, the working performance decays due to the slow / incomplete reset of the diaphragm, and when the diaphragm valve is closed, the sealing is incomplete in the prior art.

[0007] (II) Technical Solutions

[0008] To solve the above technical problem, the utility model provides a spring type diaphragm valve, including:

[0009] A valve body, which includes an air inlet end, an air outlet end and a connection end. The air inlet end is located on one side of the valve body, the air outlet end is located on the other side of the valve body, the connection end is located at the upper end of the valve body. The air inlet end is communicated with an air inlet, and the air outlet end is communicated with an air outlet;

[0010] A main body mechanism, which includes a center rod, a valve cap, a steel ball and a pressing shaft. One end of the valve cap is threadedly connected to the connection end, and the other end of the valve cap is threadedly connected to the center rod. A concave spherical surface is formed in the middle of the pressing shaft, and the steel ball is placed in the concave spherical surface. The other end of the center rod abuts against the steel ball. A gasket is arranged at one end of the pressing shaft, and a pressing ring is arranged at the other end of the pressing shaft. A connection hole is arranged in the center of the pressing shaft;

[0011] A diaphragm, which is arranged adjacent to the air inlet and abuts against the pressing shaft and the pressing ring;

[0012] A spring, one end of the spring is connected to the gasket, and the other end of the spring is connected to the pressure ring;

[0013] A sealing mechanism, the sealing mechanism includes a valve core and a valve flap, the valve core is threadedly connected to the connecting hole, and the valve flap is arranged on the valve core.

[0014] The spring diaphragm valve as described above, optionally, the spring diaphragm valve includes a rotating mechanism, the rotating mechanism includes a rotating handwheel and a handwheel cover, the rotating handwheel is connected to the central rod, the handwheel cover is connected to the rotating handwheel, and an observation groove is arranged on the handwheel cover.

[0015] The spring diaphragm valve as described above, optionally, an indicating ring is further included inside the rotating handwheel.

[0016] The spring diaphragm valve as described above, optionally, the main body mechanism includes an M4 bolt, and the M4 bolt is arranged at the central position of the central rod.

[0017] The spring diaphragm valve as described above, optionally, the sealing mechanism includes a first O-ring and a second O-ring, the first O-ring is arranged on the central rod, and the second O-ring is arranged on the pressure shaft.

[0018] The spring diaphragm valve as described above, optionally, the M4 bolt, the central rod, the valve cap, the pressure shaft and the pressure ring are coaxially arranged.

[0019] (III) Beneficial effects

[0020] A spring diaphragm valve provided by the present utility model has the following beneficial effects:

[0021] (1) The air flow of the present utility model can enter through the air inlet and flow out from the air outlet. When the experimenters in the art need to close the diaphragm valve, rotate the rotating handwheel clockwise, thereby driving the central rod to rotate clockwise. Since the central rod is threadedly connected to the valve cap, during the rotation of the central rod, it moves downward, squeezing the steel ball, so that the pressure shaft, the gasket and the pressure ring all move downward, and the diaphragm valve and the valve core deform under the extrusion, and the valve flap closely fits the air inlet, realizing the complete closing of the diaphragm valve. The operation is convenient and the air tightness is strong, which can effectively ensure that the air flow does not leak when the diaphragm valve is closed.

[0022] (2) In the present utility model, when an experimenter in the art needs to open the diaphragm valve, rotate the handwheel counterclockwise, thereby driving the central rod to rotate counterclockwise. During the rotation of the neutral rod, it moves upward, and the spring generates a reaction force of extrusion, causing the pressing shaft and the pressing ring to lift upward. The diaphragm returns to its shape. Also, since the valve core is threadedly connected to the pressing shaft, when the pressing shaft lifts, the valve core relatively lifts, and the air inlet becomes unobstructed, and the air flow can enter from the air inlet. The reaction force of the spring can solve the disadvantages that the shape of the diaphragm returns slowly or incompletely during the lifting process, ensuring that the working performance of the diaphragm valve is not attenuated and improving the working efficiency. Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a cross-sectional view of a spring-type diaphragm valve of the present utility model;

[0025] Figure 2 It is a top view of a spring-type diaphragm valve of the present utility model.

[0026] The corresponding component names for the reference numerals in the drawings are: 1. Valve body; 11. Air inlet end; 12. Air outlet end; 13. Connection end; 14. Air inlet; 15. Air outlet; 2. Main body mechanism; 21. Central rod; 22. Valve cap; 23. Steel ball; 24. Pressing shaft; 25. Gasket; 26. Pressing ring; 27. Connection hole; 28. M4 bolt; 3. Diaphragm; 4. Spring; 5. Sealing mechanism; 51. Valve core; 52. Valve flap; 53. First O-ring; 54. Second O-ring; 6. Rotating mechanism; 61. Rotating handwheel; 62. Handwheel cover; 63. Observation groove; 64. Indicator ring. Detailed Description of the Embodiments

[0027] The present application will be described in detail below in conjunction with the drawings and specific embodiments.

[0028] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all embodiments. The present application can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0029] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionality in addition to one or more of the aspects described herein.

[0030] It should also be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application schematically. The drawings only show the components related to the present application, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0031] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.

[0032] The following describes the technical solutions provided by each embodiment of the present application in conjunction with the accompanying drawings.

[0033] Refer to Figures 1 to 2 , the present utility model provides a spring diaphragm valve, which includes a valve body 1, a main body mechanism 2, a diaphragm 3, a spring 4, and a sealing mechanism 5.

[0034] In Figures 1 to 2In an alternative embodiment, the valve body 1 includes an air inlet end 11, an air outlet end 12, and a connection end 13. The air inlet end 11 is located on one side of the valve body 1, the air outlet end 12 is located on the other side of the valve body 1, and the connection end 13 is located at the upper end of the valve body 1. At the same time, the air inlet end 11 communicates with the air inlet 14, the air outlet end 12 communicates with the air outlet 15, and the air flow can enter from the air inlet end 11, flow through the air inlet 14, into the air outlet 15, and finally flow out from the air outlet 15.

[0035] In Figures 1 to 2 In an alternative embodiment, the main body mechanism 2 includes a central rod 21, a valve cap 22, a steel ball 23, and a pressing shaft 24. The main body mechanism 2 is used to provide functional support for a spring-type diaphragm valve of the present invention. Among them, the inner wall of the connection end 13 has an internal thread, and the outer wall of one end of the valve cap 22 has an external thread. Therefore, the valve cap 22 can be threadedly connected to the connection end 13. At the same time, the inner surface of the other end of the valve cap 22 has an internal thread, and the outer surface of the central rod 21 has an external thread. Therefore, the valve cap 22 is threadedly connected to the central rod 21.

[0036] Further, a concave spherical surface is provided in the middle of the pressing shaft 24, the steel ball 23 is placed in the concave spherical surface, the other end of the central rod 21 abuts against the steel ball 23, a gasket 25 is provided at one end of the pressing shaft 24, a pressing ring 26 is provided at the other end of the pressing shaft 24, and a connection hole 27 is provided in the center of the pressing shaft 24. One end of the spring 4 can be connected to the gasket 25, and the other end of the spring 4 can be connected to the pressing ring 26.

[0037] In Figures 1 to 2 In an alternative embodiment, the diaphragm 3 is arranged adjacent to the air inlet 14, and the diaphragm 3 abuts against the pressing shaft 24 and the pressing ring 26. When the pressing shaft 24 and the pressing ring 26 are pressed downward, the diaphragm 3 is driven to be deformed by extrusion, thereby closing the air flow of the air inlet 14, achieving the effect of closing the diaphragm valve. When the pressing shaft 24 and the pressing ring 26 are lifted upward, the diaphragm 3 returns to its original shape, thereby opening the air inlet 14, and the air flow flows from the air inlet 14 into the air outlet 15.

[0038] Specifically, the sealing mechanism 5 includes a valve core 51 and a valve flap 52. One end of the valve core 51 is threadedly connected to the connection hole 27 on the pressing shaft 24. A notch is also provided on the valve core 51, and the valve flap 52 can be installed in the notch. The cooperation of the valve core 51 and the valve flap 52 can further seal the air flow flowing out of the air inlet 14, ensuring that the air flow does not leak.

[0039] Further, the sealing mechanism 5 further includes a first O-ring 53 and a second O-ring 54. The first O-ring 53 is arranged on the central rod 21, and the second O-ring 54 is arranged on the pressing shaft 24. The first O-ring 53 and the second O-ring 54 are used to ensure the airtightness of the main body mechanism 2. At the same time, it ensures that the lubricating oil liquid on the main body mechanism 2 does not leak.

[0040] In Figures 1 to 2 In an alternative embodiment, the spring diaphragm valve further includes a rotating mechanism 6. The rotating mechanism 6 includes a rotating handwheel 61 and a handwheel cover 62. The rotating handwheel 61 is connected to the central rod 21. An experimenter in the art can drive the central rod 21 to rotate by rotating the rotating handwheel 61.

[0041] When the rotating handwheel 61 rotates clockwise, that is, the external thread on the central rod 21 interacts with the internal thread on the valve cap 22, causing the central rod 21 to move downward, squeezing the steel ball 23, so that the pressure shaft 24 and the pressure ring 26 are squeezed, the diaphragm 3 deforms, and the air inlet 14 is closed, and the diaphragm valve is closed. At the same time as closing the air inlet 14, the spring 4 also deforms and compresses accordingly.

[0042] When the rotating handwheel 61 rotates counterclockwise, that is, the external thread on the central rod 21 interacts with the internal thread on the valve cap 22, causing the central rod 21 to move upward, relaxing the steel ball 23. The spring 4 is slowly released from the compressed state, and the pressure shaft 24 and the pressure ring 26 are also lifted under the action of the spring 4. The diaphragm 3 returns to its original shape, the air inlet 14 is opened, and the diaphragm valve is opened.

[0043] Furthermore, the handwheel cover 62 is connected to the rotating handwheel 61, and an observation groove 63 is provided on the handwheel cover 62. At the same time, an indicating ring 64 is also included inside the rotating handwheel 61. A person skilled in the art can observe the internal situation of the diaphragm valve through the observation groove 63.

[0044] In Figures 1 to 2 In an alternative embodiment, the main body mechanism 2 includes an M4 bolt 28. The M4 bolt 28 is disposed at the central position of the central rod 21 and plays a role in fixing the central rod 21.

[0045] It should be noted that the M4 bolt 28, the central rod 21, the valve cap 22, the pressure shaft 24, and the pressure ring 26 are coaxially arranged.

[0046] The operation process of a spring diaphragm valve of the present utility model is as follows:

[0047] Airflow can enter through the air inlet 14 and flow out from the air outlet 15. When an experimenter in the art needs to close the diaphragm valve, rotate the rotating handwheel 61 clockwise, thereby driving the central rod 21 to rotate clockwise. Since the central rod 21 is threadedly connected to the valve cap 22, during the rotation of the central rod 21, it moves downward, squeezing the steel ball 23, causing the pressure shaft 24, the gasket 25, and the pressure ring 26 to all move downward. The diaphragm valve and the valve core 51 deform under the extrusion, and the valve flap 52 closely fits the air inlet 14, realizing the complete closing of the diaphragm valve. The operation is convenient and the airtightness is strong, which can effectively ensure that the airflow does not leak when the diaphragm valve is closed.

[0048] When the experimenters in the field need to open the diaphragm valve, rotate the handwheel 61 counterclockwise, thereby driving the central rod 21 to rotate counterclockwise. During the rotation of the neutral rod, it moves upward, and the spring 4 generates a reaction force of extrusion, causing the pressure shaft 24 and the pressure ring 26 to lift upward. The diaphragm 3 returns to its shape. Also, because the valve core 51 is threadedly connected to the pressure shaft 24, when the pressure shaft 24 lifts, the valve core 51 relatively lifts, and the air inlet 14 becomes unobstructed, and the air flow can enter from the air inlet 14. The reaction force of the spring 4 can solve the disadvantages that the diaphragm 3 has a slow or incomplete shape recovery during the lifting process, ensuring that the working performance of the diaphragm valve is not attenuated and improving the working efficiency.

[0049] For the same and similar parts among the various embodiments in this specification, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0050] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A spring-loaded diaphragm valve, characterized in that: include: A valve body (1), the valve body (1) comprising an air inlet end (11), an air outlet end (12) and a connecting end (13), the air inlet end (11) being located at one side of the valve body (1), the air outlet end (12) being located at the other side of the valve body (1), the connecting end (13) being located at the upper end of the valve body (1), the air inlet end (11) being connected to an air inlet port (14), and the air outlet end (12) being connected to an air outlet port (15); A main body mechanism (2), the main body mechanism (2) comprising a center rod (21), a valve bonnet (22), a steel ball (23) and a pressure shaft (24), one end of the valve bonnet (22) being threadedly connected to the connecting end (13), the other end of the valve bonnet (22) being threadedly connected to the center rod (21), a concave spherical surface being provided in the middle of the pressure shaft (24), the steel ball (23) being placed in the concave spherical surface, the other end of the center rod (21) being in contact with the steel ball (23), a gasket (25) being provided at one end of the pressure shaft (24), a pressure ring (26) being provided at the other end of the pressure shaft (24), and a connecting hole (27) being provided at the center of the pressure shaft (24); A diaphragm (3), the diaphragm (3) being arranged adjacent to the air inlet (14), the diaphragm (3) abutting against the pressure shaft (24) and the pressure ring (26); A spring (4), one end of the spring (4) is connected to the gasket (25), and the other end of the spring (4) is connected to the pressure ring (26); A sealing mechanism (5), the sealing mechanism (5) comprising a valve core (51) and a valve flap (52), the valve core (51) being threadedly connected to the connecting hole (27), and the valve flap (52) being arranged on the valve core (51).

2. The spring-loaded diaphragm valve according to claim 1, characterized in that: The spring-type diaphragm valve comprises a rotating mechanism (6), wherein the rotating mechanism (6) comprises a rotating hand wheel (61) and a hand wheel cover (62), wherein the rotating hand wheel (61) is connected to the center rod (21), the hand wheel cover (62) is connected to the rotating hand wheel (61), and an observation slot (63) is provided on the hand wheel cover (62).

3. The spring-loaded diaphragm valve according to claim 2, characterized in that: The rotating hand wheel (61) further includes an indicator ring (64) inside.

4. The spring-loaded diaphragm valve according to claim 1, characterized in that: The main body mechanism (2) comprises an M4 bolt (28), and the M4 bolt (28) is arranged at the center position of the center rod (21).

5. The spring-loaded diaphragm valve according to claim 1, characterized in that: The sealing mechanism (5) comprises a first O-ring (53) and a second O-ring (54), wherein the first O-ring (53) is arranged on the central rod (21), and the second O-ring (54) is arranged on the pressing shaft (24).

6. The spring-loaded diaphragm valve according to claim 1, characterized in that: The M4 bolt (28), the center rod (21), the valve cap (22), the pressure shaft (24) and the pressure ring (26) are coaxially arranged.

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