CN215806465U

CN215806465U - Diaphragm oil leakage prevention structure of diaphragm valve

Info

Publication number: CN215806465U
Application number: CN202121444013.XU
Authority: CN
Inventors: 刘波; 王译涵
Original assignee: Nanjing Daolong Biotechnology Co ltd
Current assignee: Nanjing Daolong Biotechnology Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-02-11
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses an oil leakage prevention structure for a diaphragm of a diaphragm valve, and particularly relates to the technical field of valve equipment. The diaphragm is extruded by the driving rod to seal the valve body, meanwhile, the pressure pad on the diaphragm is also contacted with the driving rod, the pressure pad is accommodated into the movable groove after being extruded by the driving rod, the spring is compressed in the accommodating process, the compressed spring simultaneously extrudes the extrusion pad by virtue of the tension of the spring, and the diaphragm is also extruded after the extrusion pad is extruded, so that the diaphragm is contacted with the inner wall of the valve body more tightly, the sealing performance in the diaphragm is improved, and the leakage in the valve body is avoided.

Description

Diaphragm oil leakage prevention structure of diaphragm valve

Technical Field

The utility model relates to the technical field of valve equipment, in particular to an oil leakage prevention structure of a diaphragm valve diaphragm.

Background

The valve is a general mechanical product with large amount and wide range, the application range is very wide, the pipeline can not be opened when the conveying flow medium flows, the valve can not be opened when the control medium flows, and the valve must be installed in places where the flow medium needs to be controlled, so the valve can be compared with the throat of the pipeline, the structural form of the diaphragm valve is different from that of a common valve, the diaphragm valve is a novel valve and is a cut-off valve in a special form, the opening and closing part of the diaphragm valve is a diaphragm made of soft materials, the inner cavity of the valve body is separated from the inner cavity of the valve cover and a driving part, and the diaphragm valve is widely used in various fields.

The existing valve is practical after the basic function of the valve is realized, the production cost is low, the use is convenient, the reduction of spare and accessory parts simplifies the product structure, the damage between the spare and accessory parts is reduced, the service life of the product is prolonged, the assembly speed is increased, the production efficiency is improved, the overall cost is reduced, the contact sealing property between a valve body step and a valve flap with a diaphragm is not considered, the structure for ensuring sealing is not arranged, and the hidden danger of leakage of the valve is easily caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides an oil leakage prevention structure for a diaphragm of a diaphragm valve, which extrudes the diaphragm through a driving rod to seal the valve body by the diaphragm, meanwhile, the pressure pad on the diaphragm is also contacted with the driving rod, and the pressure pad is accommodated in the movable groove after being pressed by the driving rod, the spring is compressed in the process of storage, the compressed spring simultaneously extrudes the extrusion pad by virtue of the tension of the spring, the membrane is also extruded after the extrusion pad is extruded, so that the membrane can be contacted with the inner wall of the valve body more tightly, the membrane is contacted with the valve body by the extrusion of the driving rod due to the integral structure, meanwhile, the diaphragm can be in closer contact with the inner wall of the valve body through the extrusion of the spring, the sealing performance in the diaphragm is improved, the condition that the inside of the valve body leaks is avoided, and the problem in the background technology is solved.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a diaphragm valve diaphragm leak protection oil structure, includes the valve body, the intercommunication mouth has been seted up at the valve body top, the valve body top is equipped with the connecting pipe, the connecting pipe is corresponding from top to bottom with the intercommunication mouth position, the connecting pipe bottom is equipped with the diaphragm, the diaphragm diameter is greater than the connecting pipe, the fixed mounting panel that has cup jointed of connecting pipe bottom outer wall, mounting panel top threaded connection has a plurality of bolts, the bolt bottom runs through mounting panel and diaphragm in proper order and extends to inside the valve body, the bolt is threaded connection with the valve body, the connecting pipe top is equipped with actuating mechanism.

In a preferred embodiment, still include sealing mechanism, sealing mechanism is located the diaphragm top, sealing mechanism includes a plurality of movable grooves, and a plurality of movable grooves are the annular and offer at the diaphragm top, the inslot portion that moves is equipped with the extrusion pad, the fixed a plurality of springs that are equipped with in extrusion pad top, a plurality of spring tops are equipped with same pressurized pad, a plurality of springs all with pressurized pad bottom fixed connection.

In a preferred embodiment, the inner wall of one side close to the inner part of the movable groove is provided with a limiting groove, the limiting groove is internally provided with limiting blocks, and the two limiting blocks are respectively fixedly connected with two sides of the bottom of the compression pad.

In a preferred embodiment, the driving mechanism includes a valve cover, a first annular plate is connected to the outer wall of the valve cover through threads, a second annular plate is arranged at the bottom of the first annular plate, the second annular plate is fixedly sleeved on the outer wall of the top end of the connecting pipe, the first annular plate and the second annular plate are connected through screws, a driving rod is connected to the top of the valve cover through threads, the bottom end of the driving rod penetrates through the valve cover and extends into the connecting pipe, and the bottom end of the driving rod is in contact with the top of the diaphragm.

In a preferred embodiment, the top end of the driving rod penetrates through the valve cover and extends to the top of the valve cover, and the top end of the driving rod is fixedly provided with a handle.

In a preferred embodiment, the plurality of springs are evenly spaced inside the movable slot.

The utility model has the technical effects and advantages that:

the diaphragm is extruded by the driving rod to seal the valve body, meanwhile, the pressure pad on the diaphragm is also contacted with the driving rod, the pressure pad is accommodated into the movable groove after being extruded by the driving rod, the spring is compressed in the accommodating process, the compressed spring simultaneously extrudes the extrusion pad by virtue of the tension of the spring, the diaphragm is also extruded after the extrusion pad is extruded, so that the diaphragm is contacted with the inner wall of the valve body more tightly, the diaphragm is not only extruded by the driving rod to be contacted with the valve body, but also can be contacted with the inner wall of the valve body more tightly by the extrusion of the spring through the integral structure, the sealing performance in the diaphragm is improved, and the condition of leakage in the valve body is avoided.

Drawings

FIG. 1 is a top view of a diaphragm of the present invention.

Fig. 2 is a sectional view of a connection pipe of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 2 according to the present invention.

Fig. 4 is a front view of the overall structure of the present invention.

Fig. 5 is a top view of the active slot of the present invention.

FIG. 6 is a top view of a port of the present invention

The reference signs are: 1. a valve body; 2. a communication port; 3. a connecting pipe; 4. a membrane; 5. mounting a plate; 6. A movable groove; 7. pressing the cushion; 8. a spring; 9. a pressure pad; 10. a limiting groove; 11. a limiting block; 12. A valve cover; 13. a first ring plate; 14. a second ring plate; 15. a drive rod.

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.

Referring to the attached drawings 1-6 of the specification, the diaphragm oil leakage prevention structure of the diaphragm valve in the embodiment comprises a valve body 1, a communication port 2 is formed in the top of the valve body 1, a connecting pipe 3 is arranged on the top of the valve body 1, the connecting pipe 3 corresponds to the communication port 2 up and down, a diaphragm 4 is arranged at the bottom end of the connecting pipe 3, the diameter of the diaphragm 4 is larger than that of the connecting pipe 3, a mounting plate 5 is fixedly sleeved on the outer wall of the bottom end of the connecting pipe 3, a plurality of bolts are connected to the top of the mounting plate 5 in a threaded manner, the bottom ends of the bolts sequentially penetrate through the mounting plate 5 and the diaphragm 4 and extend into the valve body 1, the bolts are in threaded connection with the valve body 1, a driving mechanism is arranged at the top of the connecting pipe 3, the driving rod 15 moves downwards and simultaneously extrudes the diaphragm 4, a pressure pad 9 on the diaphragm 4 is also in contact with the driving rod 15, and after the pressure pad 9 is extruded by the driving rod 15, is accomodate to the activity 6 insides to compress spring 8 at the in-process of accomodating, spring 8 after the compression also extrudees extrusion pad 7 simultaneously with the help of its own stretching force, then extrudees diaphragm 4 after extrusion pad 7 receives the extrusion, makes diaphragm 4 inseparabler with the contact of valve body 1 inner wall.

The sealing mechanism is positioned at the top of the diaphragm 4 and comprises a plurality of movable grooves 6, the movable grooves 6 are annularly arranged at the top of the diaphragm 4, a pressing pad 7 is arranged in the movable groove 6, a plurality of springs 8 are fixedly arranged at the top of the pressing pad 7, the same pressed pad 9 is arranged at the top of each spring 8, the springs 8 are fixedly connected with the bottom of the pressed pad 9, the diaphragm 4 is pressed while the driving rod 15 moves downwards, the pressed pad 9 on the diaphragm 4 is also contacted with the driving rod 15, the pressed pad 9 is accommodated in the movable groove 6 after being pressed by the driving rod 15, and compress spring 8 at the in-process of accomodating, spring 8 after the compression also extrudes extrusion pad 7 simultaneously with the help of its own stretching force, then extrudees diaphragm 4 behind extrusion pad 7 receiving the extrusion, makes diaphragm 4 inseparabler with what valve body 1 inner wall can contact.

Actuating mechanism includes valve gap 12, valve gap 12 outer wall threaded connection has first crown plate 13, first crown plate 13 bottom is equipped with second crown plate 14, second crown plate 14 is fixed cup joints in 3 top outer walls of connecting pipe, through screw connection between first crown plate 13 and the second crown plate 14, valve gap 12 top threaded connection has actuating lever 15, actuating lever 15 bottom runs through valve gap 12 and extends to inside connecting

pipe

3, 15 bottoms of actuating lever contact with 4 tops of diaphragm, through the setting of first crown plate 13 and second crown plate 14, the user of being convenient for dismantles valve gap 12, and valve body 1 after the dismantlement is convenient for overhaul actuating lever 15 and is maintained, extension actuating lever 15's life.

The top end of the driving rod 15 penetrates through the valve cover 12 and extends to the top of the valve cover 12, a handle is fixedly arranged at the top end of the driving rod 15, and through the arrangement of the handle, a user can operate the driving rod 15 conveniently through the handle, and operability of the user is improved.

A plurality of 8 evenly spaced distributions of spring are inside movable groove 6, through the setting of a plurality of springs 8, make extrusion pad 7 can be more even exert pressure to diaphragm 4, let diaphragm 4 can be more even with 1 inner wall contact of valve body, than the sealing performance between high diaphragm 4 and the valve body 1.

The implementation scenario is specifically as follows: the user drives actuating lever 15 through rotating the handle and moves down, also extrude diaphragm 4 when actuating lever 15 moves down, pressurized pad 9 on diaphragm 4 also contacts with actuating lever 15, pressurized pad 9 receives the extrusion back of actuating lever 15, accomodate to activity inslot 6 inside, and compress spring 8 at the in-process of accomodating, spring 8 after the compression, also extrude extrusion pad 7 simultaneously with the help of its own stretching force, extrusion pad 7 then extrudees diaphragm 4 after receiving the extrusion, make diaphragm 4 and 1 inner wall of valve body can contact inseparabler, overall structure makes diaphragm 4 not only receive actuating lever 15's extrusion and valve body 1 contact, also make diaphragm 4 can inseparabler and 1 inner wall contact of valve body through the extrusion of spring 8 simultaneously, overall structure has improved the leakproofness in the diaphragm 4, avoid the inside condition of taking place to leak of valve body 1.

Referring to the attached fig. 2, 3 and 6 of the specification, the diaphragm oil leakage prevention structure of the diaphragm valve of the embodiment: spacing groove 10 has all been seted up to the inside one side inner wall that is close to mutually of activity groove 6, spacing groove 10 inside is equipped with stopper 11, and two stopper 11 fill up 9 bottom both sides fixed connection with the pressurized respectively, and pressurized pad 9 is when being moved down by the pressure, also receives the restriction of stopper 11 and spacing groove 10, makes pressurized pad 9 can only carry out and remove along the inner wall of activity groove 6, has avoided pressurized pad 9 to take place the skew when the pressurized, and influences overall structure's leakproofness.

The implementation scenario is specifically as follows: the pressure-bearing pad 9 is limited by the limiting block 11 and the limiting groove 10 when the pressure moves downwards, so that the pressure-bearing pad 9 can only move along the inner wall of the movable groove 6, and the influence on the sealing performance of the whole structure due to the deviation of the pressure-bearing pad 9 when the pressure is applied is avoided.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a diaphragm valve diaphragm leak protection oil structure which characterized in that: including valve body (1), intercommunication mouth (2) have been seted up at valve body (1) top, valve body (1) top is equipped with connecting pipe (3), connecting pipe (3) and intercommunication mouth (2) position are corresponding from top to bottom, connecting pipe (3) bottom is equipped with diaphragm (4), diaphragm (4) diameter is greater than connecting pipe (3), mounting panel (5) have been cup jointed to connecting pipe (3) bottom outer wall is fixed, mounting panel (5) top threaded connection has a plurality of bolts, the bolt bottom runs through mounting panel (5) and diaphragm (4) in proper order and extends to valve body (1) inside, the bolt is threaded connection with valve body (1), connecting pipe (3) top is equipped with actuating mechanism.

2. The diaphragm valve diaphragm oil-leakage-prevention structure of claim 1, wherein: still include sealing mechanism, sealing mechanism is located diaphragm (4) top, sealing mechanism includes a plurality of movable groove (6), and a plurality of movable groove (6) are the annular and offer in diaphragm (4) top, movable groove (6) inside is equipped with extrusion pad (7), extrusion pad (7) top is fixed and is equipped with a plurality of springs (8), and a plurality of springs (8) top is equipped with same pressure pad (9), a plurality of springs (8) all with pressure pad (9) bottom fixed connection.

3. The diaphragm valve diaphragm oil-leakage-prevention structure of claim 2, wherein: limiting groove (10) have all been seted up to the inside one side inner wall that is close to mutually of activity groove (6), limiting groove (10) inside is equipped with stopper (11), two stoppers (11) respectively with pressure pad (9) bottom both sides fixed connection.

4. The diaphragm valve diaphragm oil-leakage-prevention structure of claim 1, wherein: actuating mechanism includes valve gap (12), valve gap (12) outer wall threaded connection has first crown plate (13), first crown plate (13) bottom is equipped with second crown plate (14), second crown plate (14) are fixed cup joints in connecting pipe (3) top outer wall, pass through screw connection between first crown plate (13) and second crown plate (14), valve gap (12) top threaded connection has actuating lever (15), actuating lever (15) bottom is run through valve gap (12) and is extended to inside connecting pipe (3), actuating lever (15) bottom contacts with diaphragm (4) top.

5. The diaphragm valve diaphragm oil-leakage-prevention structure of claim 4, wherein: the top end of the driving rod (15) penetrates through the valve cover (12) and extends to the top of the valve cover (12), and a handle is fixedly arranged at the top end of the driving rod (15).

6. The diaphragm valve diaphragm oil-leakage-prevention structure of claim 1, wherein: the springs (8) are uniformly distributed in the movable groove (6) at intervals.