Diaphragm valve opening degree adjusting device and diaphragm valve

Abstract

The application discloses a diaphragm valve opening degree adjusting device and a diaphragm valve. One end of an adjusting part of the diaphragm valve opening degree adjusting device is connected with a valve rod, and an adjusting channel is arranged in the adjusting part, and a limiting part and an adjusting hole are arranged in the adjusting channel. An adjusting mechanism comprises the adjusting part, an adjusting ball and an elastic part. An adjusting part matched with the limiting part is arranged on the adjusting part. A positioning surface and an adjusting surface are arranged on the adjusting part. The adjusting ball is located in the adjusting hole, and the depth of the adjusting hole is smaller than the diameter of the adjusting ball. The positioning surface or the adjusting surface is matched with the adjusting ball, and the outer diameter of the positioning surface is larger than the outer diameter of the adjusting surface. The positioning surface is farther away from the limiting part than the adjusting surface. The elastic part is located in the adjusting channel, and the elastic part is used for providing an acting force to the adjusting part in the direction of the adjusting part. The diaphragm valve opening degree adjusting device can complete the adjustment of the diaphragm valve opening degree through a single operating tool, and the operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of diaphragm valve opening degree adjustment, and more particularly, to a diaphragm valve opening degree adjustment device and a diaphragm valve. BACKGROUND

[0002] The opening and closing part of a pneumatic diaphragm valve is a diaphragm, which separates the lower valve body cavity from the upper cylinder cavity, so that the valve rod, valve flap and other parts located above the diaphragm are not corroded by the medium, and the medium is not leaked.

[0003] When it is necessary to adjust the valve opening degree of the pneumatic diaphragm valve online, two wrenches need to be used to apply force to the cylinder body, which is not convenient to operate.

[0004] Therefore, how to provide a device that can conveniently and quickly adjust the opening degree of the diaphragm valve has become a technical problem to be solved in the field. SUMMARY

[0005] An object of the present application is to provide a new technical solution of a device that can conveniently and quickly adjust the opening degree of the diaphragm valve.

[0006] According to a first aspect of the present application, a diaphragm valve opening degree adjustment device is provided.

[0007] The diaphragm valve opening degree adjustment device comprises an adjusting member and an adjustment mechanism, wherein

[0008] One end of the adjusting member is connected to the valve rod, and an adjustment channel is arranged in the adjusting member, and a limiting portion and an adjusting hole are arranged in the adjustment channel;

[0009] The adjustment mechanism comprises an adjusting member, an adjusting ball and an elastic member, the adjusting member is provided with an adjusting portion matched with the limiting portion, the adjusting portion is provided with a positioning surface and an adjusting surface, the adjusting ball is located in the adjusting hole, the depth of the adjusting hole is smaller than the diameter of the adjusting ball, the positioning surface or the adjusting surface is matched with the adjusting ball, the outer diameter of the positioning surface is larger than that of the adjusting surface, the positioning surface is farther away from the limiting portion than the adjusting surface, and the elastic member is located in the adjustment channel and is used to provide a force to the adjusting member in the direction of the adjusting portion.

[0010] Optionally, the adjustment channel has an adjustment section, a matching section and a limiting section, the adjustment section and the limiting section are respectively located at two ends of the adjusting member, the matching section is in sliding cooperation with the adjusting member, the inner diameter of the matching section is smaller than that of the adjustment section and the limiting section, and the connecting part of the limiting section and the matching section forms the limiting portion.

[0011] Optionally, a handle is arranged at the outer wall surface of the adjusting member corresponding to the adjustment section.

[0012] Optionally, the adjusting channel is provided with a plurality of adjusting holes which are equidistantly arranged along the inner wall of the adjusting channel.

[0013] Optionally, the connection between the positioning surface and the adjusting surface is smoothly transitioned.

[0014] Optionally, the outer wall of the adjusting member is provided with a scale line.

[0015] Optionally, the adjusting mechanism further comprises an elastic member limiting member which is installed in the adjusting channel, and the elastic member is matched with the elastic member limiting member.

[0016] Optionally, the adjusting mechanism further comprises an elastic member lower support seat, the elastic member is a spring, and the two ends of the elastic member are matched with the elastic member lower support seat and the adjusting part respectively.

[0017] According to the second aspect of the present application, a diaphragm valve is provided.

[0018] The diaphragm valve comprises a cylinder body, an adjusting cover and the diaphragm valve opening adjusting device, the adjusting cover is installed on the outer surface of the cylinder body, and the adjusting cover is provided with a sliding cavity, and the adjusting member is slidably matched with the sliding cavity.

[0019] Optionally, the diaphragm valve further comprises a valve rod, and the adjusting member is threadedly connected with the valve rod.

[0020] When the positioning surface on the adjusting member of the diaphragm valve opening adjusting device is opposite to the adjusting ball, the adjusting member is locked; when the adjusting surface on the adjusting member is opposite to the adjusting ball, the position of the valve rod can be changed by adjusting the position of the adjusting member, so as to realize the adjustment of the diaphragm valve opening. After the adjustment of the diaphragm valve opening is completed, the adjusting member is acted on by the elastic member, so that the positioning surface is matched with the adjusting ball, and the adjusting member is locked again.

[0021] The diaphragm valve opening adjusting device of the present application can complete the adjustment of the diaphragm valve opening by a single operating tool, and is convenient and fast to operate.

[0022] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application.

[0024] Figure 1 It is a structure schematic view of the diaphragm valve opening adjusting device of the present application in the locked state.

[0025] Figure 2 This is a schematic diagram of the structure of the diaphragm valve opening adjustment device embodiment of the present invention in the adjustment state.

[0026] The diagram is marked as follows:

[0027] Adjusting component-1, adjusting channel-11, adjusting section-111, mating section-112, limiting section-113, adjusting hole-114, handle-12, adjusting component-2, adjusting part-20, positioning surface-201, adjusting surface-202, adjusting ball-3, elastic component-4, elastic component limiting component-5, elastic component lower support seat-6, cylinder body-7, adjusting cover-8, sliding cavity-80, valve stem-9. Detailed Implementation

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0029] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0031] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0032] like Figure 1 and Figure 2 As shown, the diaphragm valve opening adjustment device of the present invention includes an adjustment component 1 and an adjustment mechanism.

[0033] One end of the adjusting member 1 is connected to the valve stem, and the adjusting member 1 has an adjusting channel 11. The connection between the adjusting member 1 and the valve stem can be achieved by means of threaded connection or pin connection, etc. The adjusting member 1 can drive or move the valve stem, thereby adjusting the opening degree of the diaphragm valve by adjusting the position of the valve stem. The adjusting channel 11 has a limiting part and an adjusting hole 114. The adjusting channel 11 usually extends along the length of the adjusting member 1. The limiting part can be, for example, a protrusion or a boss. There can be one or more adjusting holes 114. When there are multiple adjusting holes 114, the multiple adjusting holes 114 are evenly arranged along the inner wall surface of the adjusting channel 11.

[0034] The adjusting mechanism comprises the adjusting member 2, the adjusting ball 3 and the elastic member 4. The adjusting member 2 is provided with an adjusting part 20 matched with the limiting part. The matching between the adjusting part 20 and the limiting part can be, for example, the matching between a ring-shaped protrusion and a boss, or the snap-fit. The adjusting member 2 can be limited in the adjusting channel 11 through the matching between the adjusting part 20 and the limiting part.

[0035] The adjusting part 20 is provided with a positioning surface 201 and an adjusting surface 202. The outer diameter of the positioning surface 201 is larger than that of the adjusting surface 202, and the positioning surface 201 is farther away from the limiting part than the adjusting surface 202.

[0036] The adjusting ball 3 is located in the adjusting hole 114, and the depth of the adjusting hole 114 is smaller than the diameter of the adjusting ball 3, so that part of the surface of the adjusting ball 3 is located outside the adjusting hole 114. Both the positioning surface 201 and the adjusting surface 202 can be matched with the adjusting ball 3. When the positioning surface 201 is matched with the adjusting ball 3, the positioning surface 201 exerts a transverse outward force on the adjusting ball 3, and the adjusting member 1 is locked. When the adjusting surface 202 is matched with the adjusting ball 3, there is a gap between the adjusting surface 202 and the adjusting ball 3, or there is no force interaction perpendicular to the moving direction of the valve rod, so the adjusting member 1 is not locked. The position of the adjusting member 1 can be adjusted to change the position of the valve rod, so as to adjust the opening degree of the diaphragm valve.

[0037] The elastic member 4 is located in the adjusting channel 11, and the elastic member 4 is used to provide a force on the adjusting member 2 in the direction of the adjusting part 20. The elastic member 4 can be, for example, a spring or a spring sheet. The elastic member 4 can continuously provide a force on the adjusting member 2, so that the adjusting member 2 exerts a force on the adjusting member 2 in the direction of the limiting part when no external force is applied.

[0038] The diaphragm valve opening degree adjusting device of the present application can have a locked state and an adjusting state.

[0039] In the locked state, the adjusting part 20 of the adjusting member 2 is matched with the limiting part of the adjusting member 1, the positioning surface 201 of the adjusting part 20 abuts against the surface of the adjusting ball 3, the adjusting ball 3 moves in the direction away from the adjusting part 20, the surface of the adjusting ball 3 away from the positioning surface 201 abuts against the wall surface of the cylinder body of the diaphragm valve, and the adjusting member 2 and the adjusting member 1 are locked.

[0040] In the adjusting state, the adjusting part 20 of the adjusting member 2 is separated from the limiting part of the adjusting member 1, there is a gap between the adjusting surface 202 of the adjusting part 20 and the surface of the adjusting ball 3, or there is no force interaction perpendicular to the moving direction of the valve rod, so that there is also a gap between the surface of the adjusting ball 3 away from the positioning surface 201 and the wall surface of the cylinder body of the diaphragm valve, or there is no force interaction perpendicular to the moving direction of the valve rod, so that the adjusting member 1 can move relative to the cylinder body of the diaphragm valve. The valve rod is moved by applying a force on the adjusting member 1, so as to adjust the opening degree of the diaphragm valve.

[0041] In use, a hexagonal wrench is inserted into the opening of the adjusting channel 11 away from the valve stem. By exerting force on the adjusting member 2 in the adjusting channel 11 towards the valve stem through the hexagonal wrench, the adjusting member 2 is switched from the positioning surface 201 to the adjusting surface 202 relative to the adjusting ball 3, and the diaphragm valve opening degree adjusting device is switched from the locking state to the adjusting state. After the adjusting surface 202 is relative to the adjusting ball 3, the position of the adjusting member 1 in the diaphragm valve can be adjusted through the hexagonal wrench, so as to adjust the opening degree of the diaphragm valve. After the adjustment is completed, the hexagonal wrench is removed from the adjusting channel 11, and under the action of the elastic member 4, the adjusting member 2 is switched from the adjusting surface 202 to the positioning surface 201 relative to the adjusting ball 3, and the diaphragm valve opening degree adjusting device is switched from the adjusting state to the locking state, and the adjusting member 1 is locked again. Therefore, the diaphragm valve opening degree adjusting device of the present application can realize the adjustment of the opening degree through a single hexagonal wrench.

[0042] When the positioning surface 201 on the adjusting member 2 of the diaphragm valve opening degree adjusting device of the present application is relative to the adjusting ball 3, the adjusting member 1 is locked; when the adjusting surface 202 on the adjusting member 2 is relative to the adjusting ball 3, the position of the adjusting member 1 can be adjusted to change the position of the valve stem, and the adjustment of the opening degree of the diaphragm valve is realized. After the adjustment of the diaphragm valve opening degree is completed, the adjusting member 2 is acted on by the elastic member 4 to make the positioning surface 201 cooperate with the adjusting ball 3, and the adjusting member 1 is locked again.

[0043] The diaphragm valve opening degree adjusting device of the present application can complete the adjustment of the diaphragm valve opening degree through a single operating tool, and is convenient and fast to operate.

[0044] In an embodiment of the diaphragm valve opening degree adjusting device of the present application, the adjusting channel 11 has an adjusting section 111, a matching section 112 and a limiting section 113. The adjusting section 111 and the limiting section 113 are respectively located at two ends of the adjusting member 1, the matching section 112 is in sliding cooperation with the adjusting member 2, and the inner diameter of the matching section 112 is smaller than that of the adjusting section 111 and the limiting section 113. The connecting part of the limiting section 113 and the matching section 112 forms a limiting part. The limiting section 113 and the connecting section 112 form a step surface due to the change of the inner diameter, and the step surface is the limiting part. The adjusting part 20 of the adjusting member 2 can abut against the step surface, so as to realize the cooperation of the adjusting part 20 and the limiting part.

[0045] Further, in order to more conveniently exert force on the adjusting member 1, a handle 12 is arranged on the outer wall surface of the adjusting member 1 corresponding to the adjusting section 111. The handle 12 can be a flange protruding outward from the outer wall surface of the adjusting member 1.

[0046] In an embodiment of the diaphragm valve opening degree adjusting device, a plurality of adjustment holes 114 are provided along the inner wall of the adjusting channel 11. A plurality of adjusting balls 3 are provided corresponding to the plurality of adjustment holes 114.

[0047] In practice, three adjustment holes 114 can be provided, and the geometric centers of the three adjustment holes 114 form an equilateral triangle. The design of the three adjustment holes 114 can ensure the smooth movement of the adjusting member 1 and the adjusting member 2 while maximizing the stability of the diaphragm valve opening degree adjusting device. In addition, the provision of three adjustment holes 114 and three adjusting balls 3 is cost-effective and easy to implement.

[0048] In an embodiment of the diaphragm valve opening degree adjusting device, in order to improve the smoothness of the movement of the adjusting ball 3 on the outer surface of the adjusting portion 20, the connection between the positioning surface 201 and the adjusting surface 202 is smoothly transitioned. The smoothly transitioned portion can be a smoothly curved surface.

[0049] In an embodiment of the diaphragm valve opening degree adjusting device, a scale is provided on the outer wall of the adjusting member 1. In actual application, the position of the adjusting member 1 relative to the cylinder body can be obtained according to the scale, so as to accurately determine the opening degree of the diaphragm valve.

[0050] In an embodiment of the diaphragm valve opening degree adjusting device, in order to more conveniently and effectively position the elastic member 4 in the adjusting channel 11, the adjusting mechanism further comprises an elastic member limiting member 5. The elastic member limiting member 5 is installed in the adjusting channel 11, and the elastic member 4 cooperates with the elastic member limiting member 5. The elastic member limiting member 5 can be, for example, a retaining ring installed in a groove on the inner wall of the adjusting channel 11.

[0051] Further, the adjusting mechanism further comprises an elastic member lower support seat 6. The elastic member 4 is a spring, and the two ends of the elastic member 4 are respectively cooperated with the elastic member lower support seat 6 and the adjusting portion 20. In practice, the two ends of the spring can be respectively abutted with the elastic member lower support seat 6 and the adjusting portion 20, so as to position the elastic member 4 in the adjusting channel 11.

[0052] In order to more clearly illustrate the diaphragm valve opening degree adjusting device of the present disclosure, the following will take the embodiments shown in Figs. 1 and 2 as examples for illustration: Figure 1 and Figure 2

[0053] The diaphragm valve opening degree adjusting device comprises an adjusting member 1 and an adjusting mechanism.

[0054] ​One end of the adjusting component 1 is connected to the valve stem, and the adjusting component 1 has an adjusting channel 11. The adjusting channel 11 has an adjusting section 111, a mating section 112, and a limiting section 113. The adjusting section 111 and the limiting section 113 are located at opposite ends of the adjusting component 1, and the mating section 112 is in sliding fit with the adjusting component 2, and the inner diameter of the mating section 112 is smaller than that of the adjusting section 111 and the limiting section 113. The adjusting channel 11 has a limiting part and three adjusting holes 114, and the line connecting the geometric centers of the three adjusting holes 114 forms an equilateral triangle. A handle 12 is provided on the outer wall surface of the adjusting component 1 corresponding to the adjusting section 111.

[0055] The adjustment mechanism includes an adjustment component 2, an adjustment ball 3, an elastic component 4, an elastic component limiting component 5, and an elastic component lower support 6. The adjustment component 2 is provided with an adjustment part 20 that cooperates with the limiting part.

[0056] The adjusting part 20 is provided with a positioning surface 201 and an adjusting surface 202. The outer diameter of the positioning surface 201 is larger than the outer diameter of the adjusting surface 202, and the positioning surface 201 is farther away from the limiting part than the adjusting surface 202. The limiting part is formed at the connection between the limiting section 113 and the mating section 112. The connection between the positioning surface 201 and the adjusting surface 202 is a smooth transition.

[0057] The adjusting ball 3 is located inside the adjusting hole 114, and the depth of the adjusting hole 114 is less than the diameter of the adjusting ball 3.

[0058] The elastic element 4 of the spring is located within the adjustment channel 11, and the elastic element 4 is used to provide a force to the adjustment member 2 in the direction of the adjustment part 20. The two ends of the elastic element 4 are respectively engaged with the lower support seat 6 and the adjustment part 20.

[0059] The elastic element limiting member 5, which is a retaining ring structure, is installed in the adjustment channel 11, and the elastic element 4 cooperates with the elastic element limiting member 5.

[0060] In this embodiment, during use, a hex wrench is first inserted into the adjusting section 111 through the opening at the end of the adjusting channel 11 furthest from the valve stem. By applying a force towards the valve stem to the adjusting member 2 within the adjusting channel 11 using the hex wrench, the adjusting member 2 is positioned so that the positioning surface 201 is aligned with the adjusting ball 3 (e.g., ...). Figure 1 (As shown) is converted to an adjustment surface 202 opposite to the adjustment ball 3 (e.g.) Figure 2 As shown in the diagram, the diaphragm valve opening adjustment device changes from the locked state to the adjustment state. After the adjustment surface 202 is aligned with the adjustment ball 3, the position of the adjustment element 1 in the diaphragm valve can be adjusted using a hex wrench, thereby adjusting the opening of the diaphragm valve. After adjustment, the hex wrench is disengaged from the adjustment channel 11. Under the action of the elastic element 4, the adjustment element 2 changes from being aligned with the adjustment surface 202 and the adjustment ball 3 to being aligned with the positioning surface 201 and the adjustment ball 3. At this time, the diaphragm valve opening adjustment device changes from the adjustment state back to the locked state, locking the adjustment element 1 and the valve stem again.

[0061] The application further provides a diaphragm valve comprising a cylinder 7, an adjusting cover 8 and the diaphragm valve opening adjusting device. The adjusting cover 8 is installed on the outer surface of the cylinder 7, and the adjusting cover 8 is provided with a sliding cavity 80, and the adjusting member 1 is in sliding cooperation with the sliding cavity 80.

[0062] The adjusting cover 8 is beneficial to conveniently drive the adjusting member 1 and adjust the position of the adjusting member 1. In the specific implementation, the adjusting cover 8 can be fixed on the cylinder 7 by bolts.

[0063] When the adjusting member 1 is provided with scale lines on the outer wall surface, the position of the adjusting member 1 can be obtained according to the scale lines exposed to the adjusting cover 8, so as to judge the opening of the diaphragm valve.

[0064] Further, the diaphragm valve further comprises a valve rod 9, and the adjusting member 1 is in threaded connection with the valve rod 9. When the adjusting member 1 rotates, the movement of the valve rod 9 changes the opening of the diaphragm connected with the valve rod 9.

[0065] Although some specific embodiments of the application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

1. A diaphragm valve opening degree adjusting device characterized by comprising: The adjusting member and the adjusting mechanism are included. One end of the adjusting member is connected with the valve rod, and an adjusting channel is arranged in the adjusting member, and a limiting part and an adjusting hole are arranged in the adjusting channel. The adjusting mechanism includes an adjusting member, an adjusting ball and an elastic member, the adjusting member is provided with an adjusting part matched with the limiting part, the adjusting part is provided with a positioning surface and an adjusting surface, the connection between the positioning surface and the adjusting surface is smoothly transitioned, the adjusting ball is located in the adjusting hole, the depth of the adjusting hole is less than the diameter of the adjusting ball, the positioning surface or the adjusting surface is matched with the adjusting ball, the outer diameter of the positioning surface is greater than the outer diameter of the adjusting surface, the positioning surface is farther away from the limiting part than the adjusting surface, the elastic member is located in the adjusting channel, and the elastic member is used for providing an acting force to the adjusting member in the direction of the adjusting part. The adjusting mechanism further includes an elastic member limiting part, the elastic member limiting part is installed in the adjusting channel, and the elastic member is matched with the elastic member limiting part. The adjusting mechanism further includes an elastic member lower support seat, the elastic member is a spring, and two ends of the elastic member are respectively matched with the elastic member lower support seat and the adjusting part. The adjusting channel has an adjusting section, a matching section and a limiting section, the adjusting section and the limiting section are respectively located at two ends of the adjusting member, the matching section is slidably matched with the adjusting member, the inner diameter of the matching section is less than the adjusting section and the limiting section, and the connection between the limiting section and the matching section forms the limiting part.

2. The diaphragm valve opening degree adjusting device according to claim 1, characterized by A handle is arranged at the outer wall surface of the adjusting member corresponding to the adjusting section.

3. The diaphragm valve opening degree adjusting device according to claim 1, characterized by A plurality of adjusting holes are arranged in the adjusting channel along the inner wall surface of the adjusting channel.

4. The diaphragm valve opening degree adjusting device according to claim 1, characterized by A scale line is arranged on the outer wall surface of the adjusting member.

5. A diaphragm valve characterized by, The diaphragm valve opening adjusting device includes a cylinder body, an adjusting cover and the diaphragm valve opening adjusting device of any one of claims 1 to 4, the adjusting cover is installed on the outer surface of the cylinder body, an adjusting cover is arranged in the adjusting cover, and the adjusting member is slidably matched with the sliding cavity.

6. The diaphragm valve of claim 5, wherein, The diaphragm valve further includes a valve rod, and the adjusting member is threadedly connected with the valve rod.

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