CN116201925A - 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
CN116201925A
CN116201925A CN202111448824.1A CN202111448824A CN116201925A CN 116201925 A CN116201925 A CN 116201925A CN 202111448824 A CN202111448824 A CN 202111448824A CN 116201925 A CN116201925 A CN 116201925A
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CN
China
Prior art keywords
adjusting
piece
diaphragm valve
section
limiting
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
CN202111448824.1A
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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 CN202111448824.1A priority Critical patent/CN116201925A/en
Publication of CN116201925A publication Critical patent/CN116201925A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • 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
    • 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
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
    • F16K7/17—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

The invention discloses a diaphragm valve opening adjusting device and a diaphragm valve, wherein one end of a connecting piece of the device is connected with a valve rod, an adjusting channel is arranged in the connecting piece, and a limiting part is arranged in the adjusting channel; the adjusting device comprises an adjusting piece, a supporting piece and an elastic piece, wherein the adjusting piece is provided with a matching part matched with the limiting part, the supporting piece is fixedly connected with one end, adjacent to the connecting piece, of the adjusting piece, connected with the valve rod, the elastic piece is located in the adjusting channel, and the elastic piece is located between the matching part and the supporting piece. The diaphragm valve opening adjusting device can be used for adjusting the opening of the diaphragm valve 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 a connecting piece and an adjusting mechanism; wherein,,
one end of the connecting piece is connected with the valve rod, an adjusting channel is arranged in the connecting piece, and a limiting part is arranged in the adjusting channel;
the adjusting device comprises an adjusting piece, a supporting piece and an elastic piece, wherein the adjusting piece is provided with a matching portion matched with the limiting portion, the supporting piece is fixedly connected with one end, adjacent to the connecting piece and the valve rod, of the adjusting piece, the elastic piece is located in the adjusting channel, and the elastic piece is located between the matching portion and the supporting piece, so that acting force towards the direction of the matching portion is provided for the adjusting piece.
Optionally, an expansion notch is formed at the end, connected with the valve rod, of the connecting piece.
Optionally, the connecting piece is in threaded connection with the valve rod, and the expansion notch penetrates through threads on the connecting piece.
Optionally, the connecting piece is provided with at least two expansion openings, and the expansion openings are uniformly distributed.
Optionally, the adjustment channel has adjustment section, linkage segment and spacing section, adjustment section with spacing section is located respectively the both ends of connecting piece, the linkage segment with adjustment piece sliding fit, just the internal diameter of linkage segment is less than adjustment section with spacing section, spacing section with the junction of linkage segment forms spacing portion.
Optionally, the supporting piece has a truncated cone shape, and an outer diameter of the supporting piece gradually increases along a direction away from the limiting portion.
Optionally, the adjusting device 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 device further comprises an elastic piece lower supporting seat, an elastic piece upper supporting portion is arranged on the adjusting piece, the elastic piece is a spring, and two ends of the elastic piece are respectively matched with the elastic piece lower supporting seat and the elastic piece upper supporting portion.
According to a second aspect of the present invention, a diaphragm valve is provided.
The diaphragm valve comprises a cylinder body, a limiting cover and the diaphragm valve opening adjusting device disclosed by the disclosure, wherein the limiting cover is arranged on the outer surface of the cylinder body, a sliding cavity is arranged in the limiting cover, and the connecting piece is in sliding fit with the sliding cavity.
Optionally, a sliding protrusion is disposed on the connecting piece, and the sliding protrusion is in sliding fit with the sliding cavity.
The connecting piece of the diaphragm valve opening degree adjusting device is supported by the supporting piece to be in a state that the end part of the connecting piece is expanded, so that the connecting piece and the valve rod are locked. The adjusting piece can drive the supporting piece to break away from the adjusting channel when receiving external force effect for the one end that connecting piece and valve rod are connected is restored to original state by expanding state, thereby the position of valve rod can be changed through adjusting the position of connecting piece, realizes the regulation of diaphragm valve aperture. After the diaphragm valve opening is adjusted, the adjusting piece is driven by the elastic piece to move by the supporting piece, so that the connecting piece is in a state that the end part is enlarged again.
The diaphragm valve opening adjusting device can be used for adjusting the opening of the diaphragm valve 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 degree adjustment device of the present disclosure.
Fig. 2 is a cross-sectional view of an embodiment of a diaphragm valve opening degree adjustment device of the present disclosure.
Fig. 3 is a schematic structural view of an embodiment of a diaphragm valve of the present disclosure.
The figures are marked as follows:
the device comprises a connecting piece-1, an adjusting channel-11, an adjusting section-111, a connecting section-112, a limiting section-113, an expansion notch-12, a sliding protrusion-13, an adjusting piece-2, a matching part-21, an elastic piece upper supporting part-22, a supporting piece-3, an elastic piece-4, an elastic piece limiting piece-5, an elastic piece lower supporting seat-6, a cylinder body-7, a limiting 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 disclosure includes a connector 1 and an adjusting mechanism.
One end of the connecting piece 1 is connected with the valve rod, and an adjusting channel 11 is arranged in the connecting piece 1. The connection between the connecting 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 through the connecting piece 1, so that the opening degree of the diaphragm valve is adjusted by adjusting the position of the valve rod. The regulating passage 11 has a limiting portion therein. The adjustment channel 11 extends generally along the length of the connector 1, and both ends of the adjustment channel 11 have openings. The limiting portion may be, for example, a protrusion or a boss.
The adjusting device comprises an adjusting member 2, a supporting member 3 and an elastic member 4. The adjusting member 2 is provided with a fitting portion 21 which is fitted with a limiting portion. The engagement between the engaging portion 21 and the limiting portion may be, for example, engagement between a circumferential projection and a boss, or a snap-fit. The adjusting member 2 can be restrained in the adjusting passage 11 by the engagement between the engaging portion 21 and the restraining portion.
The supporting element 3 is fixedly connected with the end of the adjusting element 2 adjacent to the connecting element 1 and the valve rod. The fixed connection between the supporting member 3 and the adjusting member 2 can be realized by means of threaded connection or integral molding, etc.
The elastic member 4 is located in the adjustment channel 11, and the elastic member 4 is located between the fitting portion 21 and the support member 3 to provide a force to the adjustment member 2 in a direction toward the fitting portion 21. 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 to the support member 3 towards the adjustment channel 11 when no external force is applied.
The diaphragm valve opening degree adjustment device of the present disclosure may have a locked state and an adjusted state.
In the locked state, the matching part 21 of the adjusting piece 2 is matched with the limiting part of the connecting piece 1, and the supporting piece 3 enters into one end of the adjusting channel 11 of the connecting piece 1 matched with the valve rod. Under the supporting action of the supporting piece 3 on the inner wall of the adjusting channel 11, the end part of the connecting piece 1 expands, so that the connecting piece 1 and the valve rod are locked, and the opening degree of the diaphragm valve cannot be adjusted by adjusting the position of the connecting piece 1.
In the adjusted state, the support member 3 leaves the adjustment channel 11 of the connection member 1, the support member 3 does not exert a force on the adjustment channel 11, and the end of the connection member 1 is restored to the original state by not receiving the force of the support member 3, so that the connection member 1 can move relative to the valve stem. The valve rod is driven to move by applying force to the connecting piece 1, so that the opening degree of the diaphragm valve is adjusted.
In particular use, a hexagonal wrench may be used to insert the adjustment channel 11 into the opening at the end remote from the support 3. The support 3 can be pushed out of the adjustment channel 11 by the hexagonal wrench exerting a force towards the valve stem on the adjustment member 2 in the adjustment channel 11, so that the diaphragm valve opening adjustment device is converted from a locked state to an adjusted state. After the support 3 is pushed out of the adjustment channel 11, the position of the connection 1 in the diaphragm valve can be adjusted by means of a hexagonal wrench, thereby adjusting the opening of the diaphragm valve. After the adjustment is completed, the hexagonal wrench is separated from the adjusting channel 11, the diaphragm valve opening adjusting device is converted from the adjusting state to the locking state under the action of the elastic piece 4, the supporting piece 3 reenters the adjusting channel 11, and the connecting 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.
The connector 1 of the diaphragm valve opening degree adjusting apparatus of the present disclosure is supported by the support 3 to assume a state in which an end portion is expanded, so that the connector 1 is locked with the valve stem. The adjusting piece 2 can drive the supporting piece 3 to be separated from the adjusting channel 11 under the action of external force, so that one end of the connecting piece 1 connected with the valve rod is restored to the original state from the expanded state, the position of the valve rod can be changed by adjusting the position of the connecting piece 1, and the opening degree of the diaphragm valve can be adjusted. After the diaphragm valve opening is adjusted, the adjusting piece 2 is driven by the elastic piece 4 to move the supporting piece 3, so that the connecting piece 1 is in a state that the end part is expanded again.
The diaphragm valve opening adjusting device can be used for adjusting the opening of the diaphragm valve through a single operation tool, and is convenient and quick to operate.
In one embodiment of the diaphragm valve opening degree adjusting apparatus of the present disclosure, an expansion gap 12 is provided at an end of the connection member 1 connected to the valve stem. The expansion notch 12 is beneficial to enhancing the deformability of the end part of the connecting piece 1, so that the opening degree of the diaphragm valve can be adjusted by using smaller force, and the convenience of the diaphragm valve opening degree adjusting device in use is improved.
Further, in order to more effectively enhance the deformability of the end of the connector 1, the connector 1 is threaded with the valve stem, and the expansion gap 12 penetrates the threads on the connector 1.
Further, in order to more effectively enhance the deformability of the end portion of the connecting member 1, at least two expansion slits 12 are provided on the connecting member 1, and the expansion slits 12 are uniformly distributed.
In practice, three expansion notches 12 may be provided in the connector 1, which are evenly distributed.
In one embodiment of the diaphragm valve opening degree adjustment device of the present disclosure, the adjustment passage 11 has an adjustment section 111, a connection section 112, and a limit section 113. The adjusting section 111 and the limiting section 113 are respectively positioned at two ends of the connecting piece 1, the connecting section 112 is in sliding fit with the adjusting piece 2, and the inner diameter of the connecting 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 connecting section 112 forms a limiting part. A step surface, i.e. a limiting part, is formed between the limiting section 113 and the connecting section 112 due to the change of the inner diameter, and the mating part of the adjusting member 2 can be abutted against the step surface.
In one embodiment of the diaphragm valve opening degree adjustment device of the present disclosure, the support 3 has a truncated cone shape, and the outer diameter of the support 3 gradually increases in a direction away from the limiting portion. The outer surface of the support 3 of this construction is beveled to provide a guiding action so that the support 3 can more smoothly enter or leave the adjustment channel 11.
In one embodiment of the diaphragm valve opening degree adjustment device of the present disclosure, in order to more conveniently limit the elastic member 4 in the adjustment passage 11, the adjustment device further includes an elastic member limit member 5. 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 device further comprises an elastic member lower supporting seat 6, and an elastic member upper supporting portion 22 is arranged on the adjusting member 2. The elastic element 4 is a spring, and two ends of the elastic element 4 are respectively matched with the elastic element lower supporting seat 6 and the elastic element upper supporting part 22.
In specific implementation, two ends of the spring can be sleeved on the elastic member lower supporting seat 6 and the elastic member upper supporting portion 22, so that the elastic member 4 is installed 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. 2 as an example:
the diaphragm valve opening degree adjusting device comprises a connecting piece 1 and an adjusting mechanism.
An adjusting channel 11 is arranged in the connecting piece 1. The adjusting channel 11 is provided with an adjusting section 111, a connecting section 112 and a limiting section 113, the adjusting section 111 and the limiting section 113 are respectively positioned at two ends of the connecting piece 1, the inner diameter of the connecting section 112 is smaller than that of the adjusting section 111 and the limiting section 113, and a limiting part is formed at the joint of the limiting section 113 and the connecting section 112. The inner hole of the adjusting section 111 is hexagonal and can be matched with a hexagonal wrench. The limit section 113 is provided with threads connected with the valve rod, and the limit section 113 is provided with three expansion openings 12 which are uniformly distributed. The three expansion notches 12 all penetrate through the external threads on the limiting segment 113.
The adjusting device comprises an adjusting piece 2, a supporting piece 3, an elastic piece 4, an elastic piece limiting piece 5 and an elastic piece lower supporting seat 6. The adjusting member 2 is in sliding engagement with the connecting section 112. The adjusting piece 2 is provided with a matching part 21, the matching part 21 is an annular bulge, and the matching part 21 can be propped against the limiting part. The side of the mating portion 21 facing the support 3 is provided with an elastic member upper support portion 22. The support 3 is screwed with the end of the adjusting member 2 adjacent to the valve stem. The support 3 has a truncated cone shape, and the outer diameter of the support 3 gradually increases in a direction away from the limit portion. The elastic member limiting member 5 of the retainer ring structure is mounted in a groove on the inner wall of the adjustment channel 11. The elastic piece lower supporting seat 6 is supported on the elastic piece limiting piece 5, and the elastic piece lower supporting seat 6 is provided with a circumferential bulge. The elastic piece 4 is a spring, and two ends of the elastic piece 4 are respectively sleeved on the annular bulge of the elastic piece lower supporting seat 6 and the elastic piece upper supporting part 22.
In this embodiment, when the hexagonal wrench is inserted into the adjustment section 111, the hexagonal wrench can apply a force to the adjustment member 2 in the adjustment channel 11 toward the valve rod, and the adjustment member 2 moves along the adjustment channel 11 under the action of the hexagonal wrench, so as to push the support member 3 out of the adjustment channel 11. After the supporting member 3 is pushed out of the adjusting passage 11, the connecting member 1 can rotate relative to the valve rod, the connecting member 1 is forced by a hexagonal wrench, the position of the connecting member 1 in the diaphragm valve is adjusted, the position of the valve rod connected with the connecting member 1 is also adjusted, and the purpose of adjusting the opening of the diaphragm valve is achieved.
After the adjustment is completed, the hexagonal wrench is disengaged from the adjustment section 111. Under the action of the elastic force of the elastic element 4, the adjusting element 2 moves along the adjusting channel 11 in a direction away from the valve stem, and the supporting element 3 re-enters the limiting section 113 of the adjusting channel 11. Under the action of the support 3, the expansion gap 12 deforms, and the limiting section 113 expands to lock the connecting piece 1 on the valve rod.
As shown in fig. 3, the present disclosure also provides a diaphragm valve including a cylinder 7, a limit cap 8, and a diaphragm valve opening adjusting apparatus of the present disclosure. The limit cover 8 is arranged on the outer surface of the cylinder body 7, and a sliding cavity 80 is arranged in the limit cover 8. The connector 1 is in sliding engagement with the sliding chamber 80.
In particular, the outer surface of the end of the connecting element 1 remote from the valve stem 9 may be provided with graduations, which may correspond to the adjustment section 111 and/or the connecting section 112, and which may expose the limit cap 8. In this way, the position of the connector 1 can be obtained according to the graduation marks, thereby judging the opening degree of the diaphragm valve.
In one embodiment of the diaphragm valve of the present disclosure, the connector 1 is provided with a sliding protrusion 13, and the sliding protrusion 13 is slidably engaged with the sliding chamber 80. The sliding protrusion 13 is beneficial to limiting the connecting piece 1 in the limiting cover 8, so that the safety and stability of the diaphragm valve in use are improved.
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 a connecting piece and an adjusting mechanism; wherein,,
one end of the connecting piece is connected with the valve rod, an adjusting channel is arranged in the connecting piece, and a limiting part is arranged in the adjusting channel;
the adjusting device comprises an adjusting piece, a supporting piece and an elastic piece, wherein the adjusting piece is provided with a matching portion matched with the limiting portion, the supporting piece is fixedly connected with one end, adjacent to the connecting piece and the valve rod, of the adjusting piece, the elastic piece is located in the adjusting channel, and the elastic piece is located between the matching portion and the supporting piece, so that acting force towards the direction of the matching portion is provided for the adjusting piece.
2. The diaphragm valve opening degree adjusting apparatus according to claim 1, wherein an expansion gap is provided at an end of the connecting member connected to the valve stem.
3. The diaphragm valve opening degree adjustment apparatus of claim 2, wherein the connecting member is screwed to the valve stem, and the expansion slit penetrates the screw thread on the connecting member.
4. The diaphragm valve opening degree adjusting device according to claim 2, wherein at least two expansion gaps are formed in the connecting piece, and the expansion gaps are uniformly distributed.
5. The diaphragm valve opening degree adjusting device according to claim 1, wherein the adjusting channel is provided with an adjusting section, a connecting section and a limiting section, the adjusting section and the limiting section are respectively located at two ends of the connecting piece, the connecting section is in sliding fit with the adjusting piece, the inner diameter of the connecting section is smaller than that of the adjusting section and the limiting section, and the connecting part of the limiting section and the connecting section forms the limiting part.
6. The diaphragm valve opening degree adjustment apparatus according to claim 1, wherein the support member has a truncated cone shape, and an outer diameter of the support member gradually increases in a direction away from the limiting portion.
7. The diaphragm valve opening degree adjustment apparatus according to any one of claims 1 to 6, further comprising 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 device according to claim 7, further comprising an elastic member lower support seat, wherein an elastic member upper support portion is provided on the adjusting member, the elastic member is a spring, and both ends of the elastic member are respectively matched with the elastic member lower support seat and the elastic member upper support portion.
9. The diaphragm valve is characterized by comprising a cylinder body, a limiting cover and the diaphragm valve opening adjusting device according to any one of claims 1 to 8, wherein the limiting cover is arranged on the outer surface of the cylinder body, a sliding cavity is arranged in the limiting cover, and the connecting piece is in sliding fit with the sliding cavity.
10. The diaphragm valve of claim 9 wherein the connector has a sliding projection thereon that slidingly engages the sliding chamber.
CN202111448824.1A 2021-11-30 2021-11-30 Diaphragm valve aperture adjusting device and diaphragm valve Pending CN116201925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111448824.1A CN116201925A (en) 2021-11-30 2021-11-30 Diaphragm valve aperture adjusting device and diaphragm valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111448824.1A CN116201925A (en) 2021-11-30 2021-11-30 Diaphragm valve aperture adjusting device and diaphragm valve

Publications (1)

Publication Number Publication Date
CN116201925A true CN116201925A (en) 2023-06-02

Family

ID=86513506

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111448824.1A Pending CN116201925A (en) 2021-11-30 2021-11-30 Diaphragm valve aperture adjusting device and diaphragm valve

Country Status (1)

Country Link
CN (1) CN116201925A (en)

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Effective date of registration: 20240105

Address after: Longxing village five 315111 villages and towns in Zhejiang city of Ningbo province Yinzhou District

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Address before: 201203 unit 03, 8th floor, No. 6, Lane 2889, Jinke Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai

Applicant before: Ningbo yingkete Precision Machinery Co.,Ltd. Shanghai Branch