CN216692390U

CN216692390U - Indicating mechanism for displaying diaphragm damage of diaphragm valve

Info

Publication number: CN216692390U
Application number: CN202122458305.5U
Authority: CN
Inventors: 徐力; 沈凯桦
Original assignee: Shanghai Zhichun Precision Manufacturing Co ltd
Current assignee: Shanghai Zhichun Precision Manufacturing Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-06-07
Anticipated expiration: 2031-10-12

Abstract

The utility model provides an indicating mechanism for displaying damage of a diaphragm valve diaphragm, which comprises a valve main body for circulating liquid, wherein a driving shell with a barrel-shaped structure is hermetically arranged on the top surface of the valve main body, a pressing table is additionally arranged on the inner wall of the driving shell, a diaphragm and a pressing block are clamped between the pressing table and the valve main body, a driving rod is hermetically connected with the pressing block in a sealing manner, one end of the driving rod is fixedly connected with the diaphragm on the bottom surface, and the other end of the driving rod is sleeved at the upper end of the driving shell; first recess, second recess and third recess have been seted up from top to bottom in proper order to the compact heap lateral wall, all install the sealing ring in first recess and the third recess, the second recess sets up with compact heap bottom surface intercommunication, the sealed fixed mounting of drive shell outer wall has the instruction box that is used for showing the damaged condition of diaphragm, instruct box and second recess intercommunication setting. The utility model can display whether the diaphragm valve is damaged or not, and can quickly find out sealing accidents after the diaphragm is damaged and liquid leaks.

Description

Indicating mechanism for displaying diaphragm damage of diaphragm valve

Technical Field

The utility model relates to the technical field of displaying diaphragm valve diaphragm damage, in particular to an indicating mechanism for displaying diaphragm valve diaphragm damage.

Background

Carry on the pipeline of human contact harmful material such as strong acid, alkali, install the diaphragm valve for the ultrapure field, the diaphragm piece in the diaphragm valve is using throughout the year, under the unusual circumstances of operating mode, can take place the diaphragm damage, because a lot of corrosive liquids all are colourless, tasteless and transparent liquid, for improving the aesthetic property, a lot of valves are all installed in the place that is difficult for observing, and the large wafer liquid flows out when waiting to discover, causes the accident.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an indication mechanism for indicating a diaphragm of a diaphragm valve is damaged, which can indicate whether the diaphragm valve is damaged, and when the diaphragm is damaged and liquid leaks, accidents caused by sealing can be quickly found out.

In order to solve the technical problems, the utility model adopts the technical scheme that:

an indicating mechanism for displaying damage of a diaphragm valve diaphragm comprises a valve main body for flowing liquid, wherein a driving shell with a barrel-shaped structure is hermetically installed on the top surface of the valve main body, a pressing table is additionally arranged on the inner wall of the driving shell, a diaphragm and a pressing block are clamped between the pressing table and the valve main body, the pressing block is hermetically connected with a driving rod in a sealing mode, one end of the driving rod is fixedly connected with the diaphragm on the bottom surface, and the other end of the driving rod is sleeved at the upper end of the driving shell;

first recess, second recess and third recess have been seted up from top to bottom in proper order to the compact heap lateral wall, all install the sealing ring in first recess and the third recess, the second recess sets up with compact heap bottom surface intercommunication, the sealed fixed mounting of drive shell outer wall has the instruction box that is used for showing the damaged condition of diaphragm, instruct box and second recess intercommunication setting.

Furthermore, the indication box is transparent, and a color developing agent or color developing test paper is placed in the indication box.

Further, the indication box is in threaded sealing connection with the driving shell.

Furthermore, the indication box is of a compressible tank structure, and the side wall of the tank body is of an accordion structure.

Further, the color developing agent can be litmus test solution.

Further, the color test paper can be a pH test paper or litmus test paper.

The utility model has the advantages and positive effects that:

the transparent indicating box is hermetically arranged on the side wall of the driving shell, the indicating box is communicated with the top surface of the diaphragm, and the color developing agent or the color developing test paper is placed in the indicating box; and instruct box and drive shell sealing fixed connection, appear damaged and appear liquid leakage back when the diaphragm, the liquid storage of revealing in instructing the box, can not stretch to outside metal parts or on the ground, cause the accident.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a front view of an indicating mechanism of the present invention showing breakage of a diaphragm valve;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

in the figure: 1. a valve body; 2. a compression block; 201. a first groove; 202. a second groove; 203. a third groove; 3. a drive case; 4. a drive rod; 5. an indicator box; 6. developing test paper; 7. a membrane sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides an indicating mechanism for displaying diaphragm valve diaphragm damage, as shown in figures 1-2, comprising a valve main body 1 for circulating liquid, a driving shell 3 with a barrel-shaped structure is hermetically installed on the top surface of the valve main body 1, a pressing table is arranged on the inner wall of the driving shell 3, a pressing block 2 and a diaphragm 7 are clamped and installed between the pressing table and the top surface of the valve main body 1, and the pressing table hermetically installs the diaphragm 7 on the top surface of the valve main body 1 through the pressing block 2.

The compressing block 2 is hermetically sleeved with a driving rod 4 capable of axially reciprocating, the lower end of the driving rod 4 is fixedly connected with the central area of the diaphragm 7, and the upper wall of the driving shell 3 is sleeved with the upper end of the driving rod 4. The driving rod 4 is connected with a driving mechanism in a transmission mode, the driving mechanism enables the driving rod 4 to axially reciprocate to drive the central area of the diaphragm 7 to move up and down, the diaphragm 7 moves down to block a pipeline communicated in the valve main body 1, and therefore the diaphragm valve is in a blocking state, otherwise the diaphragm valve is in a conducting state. The bottom surface of the compressing block 2 is provided with a limiting groove for avoiding the damage of the diaphragm 7 caused by transition deformation in working.

First recess 201, second recess 202 and third recess 203 have been seted up from top to bottom in proper order to compact heap 2 its lateral wall, and equal seal installation sealing ring in first recess 201 and the third recess 203 for avoid in the valve main part 1 corrosive liquid to reveal to drive shell 3, damage the actuating mechanism who is connected with the 4 transmission of actuating lever.

Second recess

202 and 2 bottom surfaces of compact heap intercommunication settings, the sealed fixed mounting of 3 outer walls of drive shell has an instruction box 5 that is used for showing the damaged condition of diaphragm, has placed developer or color development test paper 6 in the instruction box 5, instructs 5 inside cavitys of box and second recess 202 intercommunication settings. The liquid leaked from the breakage of the diaphragm 7 enters the indicating box 5, the liquid reacts with the color developing agent or the color developing test paper 6 to generate a specific color, and whether the diaphragm 7 is broken or not is determined according to the color of the color developing agent or the color developing test paper 6.

Diaphragm 7 appears damaged in the course of the work, and the liquid of revealing passes

compact heap

2 and 3 lateral walls of drive shell in proper order and gets into in the instruction box 5, and instruction box 5 is transparent tank structure. When strong acid or strong alkali liquid enters the indicating box 5 and reacts with the color developing agent or the color developing test paper 6 to generate a colored substance, the color changing condition of the color developing agent or the color developing test paper 6 can be visually observed from the outside, and the valve body leakage condition can be timely found.

Preferably, the color-developing agent is litmus solution which turns purple when neutral, red when meeting acid and blue when meeting alkali. The color test paper 6 can be PH test paper or litmus test solution, the color development conditions of the litmus test paper and the litmus test solution are the same, and the PH test paper is used for determining whether the diaphragm 7 is damaged or not by the acid-base color development property.

Instruct box 5 to be compressible jar body structure, the link of the jar body and 3 threaded seal of drive shell are connected, and simple to operate is quick, instructs box 5 liquid that the diaphragm valve was revealed that can preserve temporarily simultaneously, and the liquid of avoiding revealing stretches to other outside metal parts or subaerial, causes the accident.

Preferably, the lateral wall of the jar body can be the accordion structure, and when 7 central regions of diaphragm moved up and down, the volume in space between 7 and the compact heap 2 of diaphragm can change, and 7 top surfaces of liquid level diaphragm set up with instruct 5 intercommunications of box, for avoiding the pressure change between 7 and the compact heap 2 of diaphragm to influence the normal use of 7, cushion through compressible instruction box 5. When the diaphragm 7 works normally, the indication box 5 is stretched or compressed, and whether the diaphragm 7 is broken or not can be determined by observing the condition that the indication box 5 is stretched or compressed.

The working principle and the working process of the utility model are as follows:

taking the case that purple litmus test paper is filled in the indication box 5, and the diaphragm valve transports acidic liquid as an example: the drive mechanism moves the center region of the diaphragm 7 up and down by the drive rod 4, and when the diaphragm 7 is not broken, the inside of the indicator box 5 is seen to be purple, and the indicator box 5 is compressed or stretched to a fixed length.

When diaphragm 7 is damaged, acidic liquid enters into indication box 5, makes litmus test paper become red, and the condition of discolouing can be directly perceived by the outsider to indicate box 5 by the length shortening of compression or tensile, if not discover the problem of diaphragm valve in time, the liquid of revealing is piled up in showing the box, can not stretch to other outside metal parts or subaerial, causes the accident.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. The indicating mechanism for displaying the damage of the diaphragm valve is characterized by comprising a valve main body (1) for circulating liquid, wherein a driving shell (3) with a barrel-shaped structure is hermetically arranged on the top surface of the valve main body (1), a pressing table is additionally arranged on the inner wall of the driving shell (3), a diaphragm (7) and a pressing block (2) are clamped and arranged between the pressing table and the valve main body (1), a driving rod (4) is hermetically sleeved on the pressing block (2), one end of the driving rod (4) is fixedly connected with the diaphragm (7) on the bottom surface, and the other end of the driving rod is sleeved at the upper end of the driving shell (3);

first recess (201), second recess (202) and third recess (203) have been seted up from top to bottom in proper order to compact heap (2) lateral wall, all install the sealing ring in first recess (201) and third recess (203), second recess (202) and compact heap (2) bottom surface intercommunication set up, the sealed fixed mounting of drive shell (3) outer wall has instruction box (5) that are used for showing the diaphragm damaged condition, instruct box (5) and second recess (202) intercommunication to set up.

2. The indication mechanism for indicating the diaphragm valve membrane breakage of claim 1, wherein the indication box (5) is transparent, and a color developing agent or color developing test paper (6) is placed in the indication box (5).

3. The indication mechanism for indicating diaphragm valve membrane breakage of claim 1, wherein the connection end of the indication box (5) is in threaded sealing connection with the driving shell (3).

4. An indication mechanism of diaphragm valve membrane breakage as claimed in claim 2 characterised in that the indicator box (5) is of compressible can construction, the side walls of the can being of accordion construction.

5. The indicating mechanism as claimed in claim 2, wherein the developer is litmus solution.

6. The indicator mechanism for indicating diaphragm valve membrane breakage as claimed in claim 2, wherein the color indicator paper (6) is PH paper or litmus paper.