CN117146033A - Diaphragm valve aperture adjusting device and diaphragm valve - Google Patents

Diaphragm valve aperture adjusting device and diaphragm valve Download PDF

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Publication number
CN117146033A
CN117146033A CN202210566470.9A CN202210566470A CN117146033A CN 117146033 A CN117146033 A CN 117146033A CN 202210566470 A CN202210566470 A CN 202210566470A CN 117146033 A CN117146033 A CN 117146033A
Authority
CN
China
Prior art keywords
adjusting
diaphragm valve
piece
adjustment
valve opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210566470.9A
Other languages
Chinese (zh)
Inventor
刘成忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Yingkete Fluid Control Technology Co ltd
Original Assignee
Ningbo Yingkete Precision Machinery Co ltd Shanghai Branch
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Yingkete Precision Machinery Co ltd Shanghai Branch filed Critical Ningbo Yingkete Precision Machinery Co ltd Shanghai Branch
Priority to CN202210566470.9A priority Critical patent/CN117146033A/en
Publication of CN117146033A publication Critical patent/CN117146033A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008—Mechanical means
    • F16K37/0016—Mechanical means having a graduated scale
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves

Abstract

The invention discloses a diaphragm valve opening degree adjusting device and a diaphragm valve, wherein one end of an adjusting piece of the diaphragm valve opening degree adjusting device is connected with a valve rod, an adjusting channel is arranged in the adjusting piece, and a limiting part and an adjusting hole are arranged in the adjusting channel; the adjusting mechanism comprises an adjusting piece, an adjusting ball and an elastic piece, wherein the adjusting piece 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 adjusting ball is positioned in an 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 away from the limiting part compared with the adjusting surface, the elastic piece is positioned in the adjusting channel, and the elastic piece is used for providing acting force towards the direction of the adjusting part for the adjusting piece. The diaphragm valve opening adjusting device can complete the adjustment of the diaphragm valve opening through a single operation tool, and is convenient and quick to operate.

Description

Diaphragm valve aperture adjusting device and diaphragm valve
Technical Field
The present invention relates to the field of diaphragm valve opening adjustment, and more particularly, to a diaphragm valve opening adjustment device and a diaphragm valve.
Background
The opening and closing part of the pneumatic diaphragm valve is a diaphragm, and the diaphragm separates the inner cavity of the valve body at the lower part from the inner cavity of the cylinder at the upper part, so that parts such as a valve rod, a valve clack and the like positioned above the diaphragm are not corroded by media, and the pneumatic diaphragm valve has the advantage of no leakage of the media.
When the valve opening of the pneumatic diaphragm valve needs to be adjusted on line, two wrenches are needed to be matched to apply force to the cylinder body, and the operation is inconvenient.
Therefore, how to provide a device capable of conveniently and rapidly adjusting the opening of the diaphragm valve is a technical problem to be solved in the field.
Disclosure of Invention
The invention aims to provide a novel technical scheme of a device capable of conveniently and quickly adjusting the opening degree of a diaphragm valve.
According to a first aspect of the present invention, there is provided a diaphragm valve opening degree adjustment device.
The diaphragm valve opening adjusting device comprises an adjusting piece and an adjusting mechanism; wherein,
one end of the adjusting piece is connected with the valve rod, an adjusting channel is arranged in the adjusting piece, and a limiting part and an adjusting hole are arranged in the adjusting channel;
the adjusting mechanism comprises an adjusting piece, an adjusting ball and an elastic piece, wherein the adjusting piece 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 adjusting ball is positioned 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 far away from the limiting part compared with the adjusting surface, the elastic piece is positioned in the adjusting channel, and the elastic piece is used for providing acting force towards the direction of the adjusting part for the adjusting piece.
Optionally, the adjustment channel has adjustment section, cooperation section and spacing section, adjustment section with spacing section is located respectively the both ends of adjustment piece, cooperation section with adjustment piece sliding fit, just the internal diameter of cooperation section is less than adjustment section with spacing section, spacing section with the junction of cooperation section forms spacing portion.
Optionally, a handle is disposed on the adjusting member at an outer wall surface corresponding to the adjusting section.
Optionally, a plurality of adjustment holes are formed in the adjustment channel and are equally distributed along the inner wall surface of the adjustment channel.
Optionally, the connection between the positioning surface and the adjusting surface is in smooth transition.
Optionally, scale marks are arranged on the outer wall surface of the adjusting piece.
Optionally, the adjusting mechanism further includes an elastic member limiting member, the elastic member limiting member is installed in the adjusting channel, and the elastic member is matched with the elastic member limiting member.
Optionally, the adjusting mechanism further includes an elastic element lower support seat, the elastic element is a spring, and two ends of the elastic element are respectively matched with the elastic element lower support seat and the adjusting portion.
According to a second aspect of the present invention, a diaphragm valve is provided.
The diaphragm valve comprises a cylinder body, an adjusting cover and the diaphragm valve opening adjusting device, wherein the adjusting cover is arranged on the outer surface of the cylinder body, a sliding cavity is arranged in the adjusting cover, and the adjusting piece is in sliding fit with the sliding cavity.
Optionally, the diaphragm valve further comprises a valve rod, and the adjusting piece is in threaded connection with the valve rod.
When the positioning surface on the adjusting piece of the diaphragm valve opening adjusting device is opposite to the adjusting ball, the adjusting piece is locked; when the adjusting surface on the adjusting piece is opposite to the adjusting ball, the position of the valve rod can be changed by adjusting the position of the adjusting piece, so that the opening degree of the diaphragm valve can be adjusted. After the diaphragm valve opening is regulated, the regulating member is under the action of the elastic member, so that the positioning surface is matched with the regulating ball, and the regulating member is locked again.
The diaphragm valve opening adjusting device can complete the adjustment of the diaphragm valve opening through a single operation tool, and is convenient and quick to operate.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural view of an embodiment of a diaphragm valve opening adjusting apparatus according to the present invention in a locked state.
Fig. 2 is a schematic view showing the structure of an embodiment of the diaphragm valve opening degree adjusting apparatus of the present invention in an adjusted state.
The figures are marked as follows:
the device comprises an adjusting part-1, an adjusting channel-11, an adjusting section-111, a matching section-112, a limiting section-113, an adjusting hole-114, a handle-12, an adjusting part-2, an adjusting part-20, a positioning surface-201, an adjusting surface-202, an adjusting ball-3, an elastic part-4, an elastic part limiting part-5, an elastic part lower supporting seat-6, a cylinder body-7, an adjusting cover-8, a sliding cavity-80 and a valve rod-9.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
As shown in fig. 1 and 2, the diaphragm valve opening degree adjusting apparatus of the present invention includes an adjuster 1 and an adjusting mechanism.
One end of the adjusting piece 1 is connected with the valve rod, and an adjusting channel 11 is arranged in the adjusting piece 1. The connection between the adjusting piece 1 and the valve rod can be realized by means of threaded connection or pin connection, etc. The valve rod can be driven or driven to move by the adjusting piece 1, so that the opening degree of the diaphragm valve can be adjusted by adjusting the position of the valve rod. The regulating passage 11 is provided with a limiting part and an adjusting hole 114. The adjustment channel 11 extends generally along the length of the adjustment member 1. The limiting portion may be, for example, a protrusion or a boss. The adjustment holes 114 may be one or more, and when the adjustment holes 114 are plural, the plurality of adjustment holes 114 are uniformly provided along the inner wall surface of the adjustment passage 11.
The adjusting mechanism comprises an adjusting piece 2, an adjusting ball 3 and an elastic piece 4. The adjusting piece 2 is provided with an adjusting part 20 matched with the limiting part. The fit between the adjustment portion 20 and the stop portion may be, for example, a fit between a circumferential projection and a boss, or a snap fit. The adjusting member 2 can be restrained in the adjusting channel 11 by cooperation between the adjusting portion 20 and the restraining portion.
The adjusting portion 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 far away from the limiting portion compared with the adjusting surface 202.
The adjustment ball 3 is located in the adjustment hole 114, and the depth of the adjustment hole 114 is smaller than the diameter of the adjustment ball 3, so that a part of the surface of the adjustment ball 3 is located outside the adjustment hole 114. Both the positioning surface 201 and the adjustment surface 202 can cooperate with the adjustment ball 3. When the positioning surface 201 is matched with the adjusting ball 3, the positioning surface 201 applies a laterally outward force to the adjusting ball 3, and the adjusting piece 1 is locked. When the adjusting surface 202 is matched with the adjusting ball 3, a gap exists between the adjusting surface 202 and the adjusting ball 3 or no interaction exists between the adjusting surface and the adjusting ball 3 and no force perpendicular to the moving direction of the valve rod, the adjusting piece 1 is not locked, the position of the valve rod can be changed by adjusting the position of the adjusting piece 1, and the opening degree of the diaphragm valve can be adjusted.
The elastic member 4 is located in the adjustment channel 11, and the elastic member 4 is configured to provide a force to the adjustment member 2 in a direction toward the adjustment portion 20. The elastic member 4 may be, for example, a spring or a leaf spring. The elastic member 4 may continuously provide a force to the adjustment member 2 such that the adjustment member 2 applies a force toward the stopper when the adjustment member 2 is not subjected to an external force.
The diaphragm valve opening degree adjusting device of the present invention may have a locking state and an adjusting state.
In the locked state, the adjusting part 20 of the adjusting part 2 is matched with the limiting part of the adjusting part 1, the positioning surface 201 of the adjusting part 20 abuts against the surface of the adjusting ball 3, so that the adjusting ball 3 moves towards the direction away from the adjusting part 20, and 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 effect of locking the adjusting part 2 and the adjusting part 1 is achieved.
In the adjustment state, the adjustment portion 20 of the adjustment member 2 is separated from the limit portion of the adjustment member 1, there is a gap or no interaction of forces perpendicular to the movement direction of the valve stem between the adjustment surface 202 of the adjustment portion 20 and the surface of the adjustment ball 3, so that there is also a gap or no interaction of forces perpendicular to the movement direction of the valve stem between the surface of the adjustment ball 3 remote from the positioning surface 201 and the wall surface of the cylinder of the diaphragm valve, whereby the adjustment member 1 is movable relative to the cylinder of the diaphragm valve. The valve rod is driven to move by the force applied by the adjusting piece 1, so that the opening degree of the diaphragm valve is adjusted.
In particular use, a hex wrench may be used to insert into the opening in the end of the adjustment passage 11 remote from the valve stem. The adjusting member 2 in the adjusting channel 11 applies a force towards the valve rod through the hexagonal wrench, so that the adjusting member 2 is converted from the positioning surface 201 to the adjusting ball 3 to the adjusting surface 202 to the adjusting ball 3, and at this time, the diaphragm valve opening adjusting device is converted from the locking state to the adjusting state. After the adjusting surface 202 is opposite to the adjusting ball 3, the position of the adjusting member 1 in the diaphragm valve can be adjusted by a hexagonal wrench, thereby adjusting the opening degree of the diaphragm valve. After the adjustment is completed, the hexagonal wrench is separated from the adjusting channel 11, the adjusting piece 2 is relatively converted into a positioning surface 201 to be opposite to the adjusting ball 3 by the adjusting surface 202 and the adjusting ball 3 under the action of the elastic piece 4, and at the moment, the diaphragm valve opening adjusting device is converted back to a locking state from an adjusting state, and the adjusting piece 1 and the valve rod are locked again. Therefore, the diaphragm valve opening degree adjusting device can realize the adjustment of the opening degree through a single hexagonal wrench.
When the positioning surface 201 on the adjusting piece 2 of the diaphragm valve opening adjusting device is opposite to the adjusting ball 3, the adjusting piece 1 is locked; when the adjusting surface 202 on the adjusting member 2 is opposite to the adjusting ball 3, the position of the valve rod can be changed by adjusting the position of the adjusting member 1, so that the opening degree of the diaphragm valve can be adjusted. After the diaphragm valve opening is adjusted, the adjusting piece 2 is acted by the elastic piece 4 to enable the positioning surface 201 to be matched with the adjusting ball 3, and the adjusting piece 1 is locked again.
The diaphragm valve opening adjusting device can complete the adjustment of the diaphragm valve opening through a single operation tool, and is convenient and quick to operate.
In one embodiment of the diaphragm valve opening degree adjustment device of the present invention, the adjustment passage 11 has an adjustment section 111, a fitting 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 piece 1, the matching section 112 is in sliding fit with the adjusting piece 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 connection of the limiting section 113 and the mating section 112 forms a limiting portion. The step surface, namely the limiting part, is formed between the limiting section 113 and the connecting section 112 due to the change of the inner diameter, and the adjusting part 20 of the adjusting piece 2 can be abutted against the step surface to realize the matching of the adjusting part 20 and the limiting part.
Further, in order to apply force to the adjustment member 1 more conveniently, a handle 12 is provided on the adjustment member 1 at an outer wall surface corresponding to the adjustment section 111. The handle 12 may be an outwardly projecting flange on the outer wall surface of the self-adjusting piece 1.
In one embodiment of the diaphragm valve opening degree adjusting apparatus of the present invention, a plurality of adjustment holes 114 are provided in the adjustment passage 11, and the adjustment holes are equally provided along the inner wall surface of the adjustment passage 11. A plurality of adjustment balls 3 are provided in one-to-one correspondence with the plurality of adjustment holes 114.
In practice, three adjustment holes 114 may be provided, and the line between the geometric centers of the three adjustment holes 114 forms an equilateral triangle. The three adjusting holes 114 are designed to ensure smooth movement of the adjusting members 1 and 2 while maximally ensuring smoothness of the diaphragm valve opening degree adjusting device. In addition, the three adjustment holes 114 and the three adjustment balls 3 are provided at a low cost and are easy to implement.
In one embodiment of the diaphragm valve opening degree adjusting apparatus of the present invention, in order to improve the smoothness of movement of the adjusting ball 3 on the outer surface of the adjusting portion 20, the junction between the positioning surface 201 and the adjusting surface 202 is smoothly transitioned. The smooth transition may be a smooth curved surface.
In one embodiment of the diaphragm valve opening degree adjusting apparatus of the present invention, graduation marks are provided on the outer wall surface of the adjuster 1. In practical application, the position of the adjusting piece 1 relative to the cylinder body can be obtained according to the scale marks, so that the opening degree of the diaphragm valve can be accurately judged.
In one embodiment of the diaphragm valve opening degree adjusting apparatus of the present invention, the adjusting mechanism further includes the elastic member stopper 5 in order to more conveniently and efficiently position the elastic member 4 in the adjusting passage 11. The elastic piece limiting piece 5 is arranged in the adjusting channel 11, and the elastic piece 4 is matched with the elastic piece limiting piece 5. The elastic element stop 5 may for example be a collar mounted in a recess on the inner wall of the adjustment channel 11.
Further, the adjusting mechanism further comprises an elastic piece lower supporting seat 6. The elastic piece 4 is a spring, and two ends of the elastic piece 4 are respectively matched with the elastic piece lower supporting seat 6 and the adjusting part 20. In specific implementation, two ends of the spring can respectively prop against the elastic piece lower supporting seat 6 and the adjusting part 20, so that the elastic piece 4 is positioned in the adjusting channel 11.
In order to more clearly explain the diaphragm valve opening degree adjustment device of the present disclosure, the following description will take the embodiment shown in fig. 1 and 2 as an example:
the diaphragm valve opening degree adjusting device comprises an adjusting piece 1 and an adjusting mechanism.
One end of the adjusting piece 1 is connected with the valve rod, and an adjusting channel 11 is arranged in the adjusting piece 1. The adjustment channel 11 has an adjustment section 111, a mating 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 piece 1, the matching section 112 is in sliding fit with the adjusting piece 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 regulating channel 11 is internally provided with a limiting part and three regulating holes 114, and the connecting line between the geometric centers of the three regulating holes 114 forms an equilateral triangle. The adjusting member 1 is provided with a handle 12 at an outer wall surface corresponding to the adjusting section 111.
The adjusting mechanism comprises an adjusting piece 2, an adjusting ball 3, an elastic piece 4, an elastic piece limiting piece 5 and an elastic piece lower supporting seat 6. The adjusting piece 2 is provided with an adjusting part 20 matched with the limiting part.
The adjusting portion 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 far away from the limiting portion compared with the adjusting surface 202. The connection of the limiting section 113 and the mating section 112 forms a limiting portion. The junction between the locating surface 201 and the adjusting surface 202 is a smooth transition.
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.
The elastic member 4, which is a spring, is located in the adjustment channel 11, and the elastic member 4 is adapted to provide a force to the adjustment member 2 in a direction towards the adjustment portion 20. Both ends of the elastic member 4 are respectively matched with the elastic member lower supporting seat 6 and the adjusting part 20.
The elastic piece limiting piece 5 with a check ring structure is arranged in the adjusting channel 11, and the elastic piece 4 is matched with the elastic piece limiting piece 5.
In use, this embodiment is first inserted into the adjustment section 111 through the opening in the end of the adjustment passage 11 remote from the valve stem. By applying a force to the valve rod to the adjusting member 2 in the adjusting channel 11 by the hexagonal wrench, the adjusting member 2 is converted from the positioning surface 201 to the adjusting ball 3 (as shown in fig. 1) to the adjusting surface 202 to the adjusting ball 3 (as shown in fig. 2), and at this time, the diaphragm valve opening adjusting device is converted from the locking state to the adjusting state. After the adjusting surface 202 is opposite to the adjusting ball 3, the position of the adjusting member 1 in the diaphragm valve can be adjusted by a hexagonal wrench, thereby adjusting the opening degree of the diaphragm valve. After the adjustment is completed, the hexagonal wrench is separated from the adjusting channel 11, the adjusting piece 2 is relatively converted into a positioning surface 201 to be opposite to the adjusting ball 3 by the adjusting surface 202 and the adjusting ball 3 under the action of the elastic piece 4, and at the moment, the diaphragm valve opening adjusting device is converted back to a locking state from an adjusting state, and the adjusting piece 1 and the valve rod are locked again.
The invention also provides a diaphragm valve comprising a cylinder 7, an adjusting cover 8 and the diaphragm valve opening adjusting device. The adjusting cover 8 is arranged on the outer surface of the cylinder body 7, a sliding cavity 80 is arranged in the adjusting cover 8, and the adjusting piece 1 is in sliding fit with the sliding cavity 80.
The provision of the adjustment cap 8 facilitates more convenient driving of the adjustment member 1 and adjustment of the position of the adjustment member 1. In practice, the adjusting cover 8 may be fixed to the cylinder 7 by bolts.
When the outer wall surface of the adjusting piece 1 is provided with scale marks, the position of the adjusting piece 1 can be obtained according to the condition that the scale marks are exposed out of the adjusting cover 8, so that the opening degree of the diaphragm valve is judged.
Further, the diaphragm valve further comprises a valve rod 9, and the adjusting piece 1 is in threaded connection with the valve rod 9. When the regulator 1 rotates, the valve rod 9 moves, and the opening degree of the diaphragm connected to the valve rod 9 changes.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. The diaphragm valve opening adjusting device is characterized by comprising an adjusting piece and an adjusting mechanism; wherein,
one end of the adjusting piece is connected with the valve rod, an adjusting channel is arranged in the adjusting piece, and a limiting part and an adjusting hole are arranged in the adjusting channel;
the adjusting mechanism comprises an adjusting piece, an adjusting ball and an elastic piece, wherein the adjusting piece 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 adjusting ball is positioned 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 far away from the limiting part compared with the adjusting surface, the elastic piece is positioned in the adjusting channel, and the elastic piece is used for providing acting force towards the direction of the adjusting part for the adjusting piece.
2. The diaphragm valve opening degree adjusting device according to claim 1, wherein the adjusting passage has an adjusting section, a fitting section and a limiting section, the adjusting section and the limiting section are respectively located at two ends of the adjusting member, the fitting section is slidably fitted with the adjusting member, and an inner diameter of the fitting section is smaller than that of the adjusting section and the limiting section, and a joint of the limiting section and the fitting section forms the limiting portion.
3. The diaphragm valve opening degree adjusting apparatus according to claim 2, wherein a handle is provided on the adjusting member at an outer wall surface corresponding to the adjusting section.
4. The diaphragm valve opening degree adjustment apparatus according to claim 1, wherein a plurality of the adjustment holes are provided in the adjustment passage so as to be equally spaced along an inner wall surface of the adjustment passage.
5. The diaphragm valve opening degree adjustment apparatus according to claim 1, wherein a junction between the positioning surface and the adjustment surface is smoothly transitioned.
6. The diaphragm valve opening degree adjusting apparatus according to claim 1, wherein the outer wall surface of the adjusting member is provided with scale marks.
7. The diaphragm valve opening degree adjustment apparatus according to any one of claims 1 to 6, wherein the adjustment mechanism further comprises an elastic member stopper installed in the adjustment passage, the elastic member cooperating with the elastic member stopper.
8. The diaphragm valve opening degree adjusting apparatus according to claim 7, wherein the adjusting mechanism further comprises an elastic member lower support seat, the elastic member is a spring, and both ends of the elastic member are respectively engaged with the elastic member lower support seat and the adjusting portion.
9. A diaphragm valve, characterized by comprising a cylinder body, an adjusting cover and the diaphragm valve opening adjusting device according to any one of claims 1 to 8, wherein the adjusting cover is arranged on the outer surface of the cylinder body, a sliding cavity is arranged in the adjusting cover, and the adjusting piece is in sliding fit with the sliding cavity.
10. The diaphragm valve of claim 9 further comprising a valve stem, the regulator being threadably coupled to the valve stem.
CN202210566470.9A 2022-05-23 2022-05-23 Diaphragm valve aperture adjusting device and diaphragm valve Pending CN117146033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210566470.9A CN117146033A (en) 2022-05-23 2022-05-23 Diaphragm valve aperture adjusting device and diaphragm valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210566470.9A CN117146033A (en) 2022-05-23 2022-05-23 Diaphragm valve aperture adjusting device and diaphragm valve

Publications (1)

Publication Number Publication Date
CN117146033A true CN117146033A (en) 2023-12-01

Family

ID=88904752

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210566470.9A Pending CN117146033A (en) 2022-05-23 2022-05-23 Diaphragm valve aperture adjusting device and diaphragm valve

Country Status (1)

Country Link
CN (1) CN117146033A (en)

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