CN218494254U

CN218494254U - Diaphragm valve convenient to processing installation

Info

Publication number: CN218494254U
Application number: CN202220700046.4U
Authority: CN
Inventors: 项少聪
Original assignee: Shanghai Yuanan Liquid Equipment Technology Co ltd
Current assignee: Shanghai Yuanan Liquid Equipment Technology Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2023-02-17
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses a diaphragm valve convenient to processing installation, include: a valve body; a cylinder assembly; the diaphragm is arranged on the valve body, and the air cylinder assembly is arranged on one side, far away from the valve body, of the diaphragm; the valve core comprises a plurality of valve sub-cores which are arranged in a surrounding mode, a first containing groove is formed in the valve core, and the diaphragm is clamped in the first containing groove. Enclose to close through a plurality of minutes case and form case and diaphragm joint in first storage tank, realize the joint of case and diaphragm, simple to operate, and the elasticity degree of easy control installation, make the connection of diaphragm and case more reliable, thereby the life of diaphragm has been prolonged, and the case need not processing screw hole and can directly use, and the processing of being convenient for, practice thrift the processing cost and ensured the centering installation of diaphragm, the size of diaphragm valve has still been reduced, make the diaphragm valve smaller and more exquisite, compact, the installation space of diaphragm valve has been reduced.

Description

Diaphragm valve convenient to processing installation

Technical Field

The utility model relates to the technical field of valves, concretely relates to diaphragm valve convenient to processing installation.

Background

The diaphragm valve is a special type of block valve, and an inner cavity of a lower valve body is separated from an inner cavity of an upper valve cover through a diaphragm, so that the purity of a working medium is ensured. The closing and opening of the diaphragm valve is achieved by controlling the up and down movement of the diaphragm, so its lifetime depends on the fatigue resistance of the diaphragm.

The prior art discloses diaphragm valves that include a diaphragm and a valve cartridge. Wherein, the valve core is provided with a threaded hole, the diaphragm is provided with a threaded pin, and the valve core and the diaphragm are connected by the threaded hole and the threaded pin to realize the threaded connection of the valve core and the diaphragm.

However, in the diaphragm valve, the valve core and the diaphragm are connected through the screw thread, so that the screw hole is not conveniently centered and processed, and the tightness degree of the screw thread connection is not conveniently controlled, thereby affecting the service life of the diaphragm.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the centering processing screw hole of not being convenient for among the prior art and the elasticity degree of not being convenient for control threaded connection to influence the life's of diaphragm defect, thereby provide a diaphragm valve convenient to processing installation.

A diaphragm valve for easy tooling installation, comprising:

a valve body;

a cylinder assembly;

the diaphragm is arranged on the valve body, and the air cylinder assembly is arranged on one side, far away from the valve body, of the diaphragm;

the valve core comprises a plurality of valve sub-cores which are arranged in a surrounding mode, a first containing groove is formed in the valve core, and the diaphragm is clamped in the first containing groove.

Furthermore, the valve core is provided with a second accommodating groove, the second accommodating groove is formed in one side, close to the air cylinder assembly, of the first accommodating groove, and an anti-rotation pin is arranged on a piston rod of the air cylinder assembly and embedded into the second accommodating groove.

Further, the diaphragm comprises a pin bulge, and the head part of the pin bulge protrudes out of the waist part of the pin bulge.

Furthermore, the pin bulge is of a conical surface structure, and the conical surface structure is gradually expanded along the direction close to the valve body.

Further, the diaphragm further includes a first diaphragm body coupled to the pin boss.

Further, the diaphragm further comprises a second diaphragm body and a third diaphragm body, the second diaphragm body is connected to the pin boss, and the third diaphragm body is connected to the second diaphragm body.

Further, the first diaphragm body is an EPDM diaphragm body; or, the second diaphragm body and the third diaphragm body are bonded or separated, the second diaphragm body is an EPDM diaphragm body, and the third diaphragm body is a PTFE diaphragm body.

Furthermore, one side of the piston rod, which is far away from the valve body, is provided with a piston of the air cylinder assembly, one side of the piston, which is far away from the piston rod, is provided with a guide rod, and the top end of the guide rod is provided with a flat square.

Furthermore, a first sealing ring is arranged outside the piston, and a second sealing ring is arranged outside the piston rod.

Further, first sealing washer the second sealing washer is the elasticity lip structure, first sealing washer is the type of falling V setting, the second sealing washer is the type of V setting.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a pair of diaphragm valve convenient to processing installation, include: a valve body; a cylinder assembly; the diaphragm is arranged on the valve body, and the air cylinder assembly is arranged on one side, far away from the valve body, of the diaphragm; the valve core comprises a plurality of valve sub-cores which are arranged in a surrounding mode, a first containing groove is formed in the valve core, and the diaphragm is clamped in the first containing groove. A diaphragm valve convenient to processing installation of this structure, enclose to close through a plurality of minutes case and form case and diaphragm joint in first storage tank, realize the joint of case and diaphragm, high durability and convenient installation, and the elasticity degree of easy control installation, make the connection of diaphragm and case more reliable, thereby the life of diaphragm has been prolonged, and the case need not to process the screw hole and can directly use, high durability and convenient processing, the centering installation of having practiced thrift the processing cost and having ensured the diaphragm, still reduced diaphragm valve's size, make the diaphragm valve smaller and more exquisite, compact, the installation space of diaphragm valve has been reduced.

2. The utility model provides a pair of diaphragm valve convenient to processing installation, the piston rod is kept away from one side of valve body is equipped with the piston of cylinder subassembly, the piston is kept away from one side of piston rod is equipped with the guide bar, the top of guide bar is equipped with flat side. The diaphragm valve convenient to process and install in the structure has the advantages that the flat square is arranged, and the acting force is convenient.

3. The utility model provides a pair of diaphragm valve convenient to processing installation, first sealing washer the second sealing washer is the elasticity lip structure, first sealing washer is the type of falling V setting, the second sealing washer is the type of V setting. The diaphragm valve convenient to process and install of the structure has the advantages that the elastic lip structure is arranged, the wear resistance is better, the sealing is more reliable, and the service life is longer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a diaphragm valve convenient to process and install according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the diaphragm valve shown in FIG. 1, ready for tooling installation;

FIG. 3 is a schematic structural diagram of the valve component and the piston rod shown in FIG. 2;

FIG. 4 is a top view of the diaphragm shown in FIG. 2;

FIG. 5 is a schematic view of the diaphragm shown in FIG. 2;

FIG. 6 is a cross-sectional view of the diaphragm shown in FIG. 2;

FIG. 7 is a cross-sectional view of an alternative embodiment of the membrane sheet shown in FIG. 2;

FIG. 8 is a schematic view of the construction of an alternative embodiment of the membrane sheet shown in FIG. 2;

FIG. 9 is a schematic structural view of the first seal ring shown in FIG. 2;

FIG. 10 is a schematic structural view of the second seal ring shown in FIG. 2;

description of the reference numerals:

1-a valve body, 2-a cylinder assembly, 21-a piston rod, 211-an anti-rotation pin, 22-a piston, 23-a guide rod, 231-a flat square, 24-a helical compression spring, 25-a cylinder block, 26-a cylinder upper cover, 27-a gland nut, 28-an indicator sleeve, 291-a first sliding bearing, 292-a second sliding bearing, 3-a diaphragm, 31-a pin boss, 32-a first diaphragm body, 33-a second diaphragm body, 34-a third diaphragm body, 4-a valve core, 41-a valve core, 42-a first receiving groove, 43-a second receiving groove, 44-a third receiving groove, 5-a fastener, 6-an air tap, 71-a first seal ring, 72-a second seal ring, and 8-an elastic retainer ring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

A diaphragm valve convenient for processing and installation as shown in fig. 1 to 10 comprises a valve body 1, a cylinder assembly 2, a diaphragm 3 and a valve core 4. Wherein, the diaphragm 3 is arranged on the valve body 1, and the cylinder component 2 is arranged on one side of the diaphragm 3 far away from the valve body 1; the cylinder assembly 2 and the valve body 1 are connected through a fastener 5 such as a screw and the like and clamp the diaphragm 3; the cylinder assembly 2 is provided with a guide groove to form a sliding track of the valve core 4 and the cylinder assembly 2 is connected with an air nozzle 6. Specifically, the two ends of the valve body 1 are connection ports, a valve seat is arranged on the valve body 1, and a diaphragm 3 is arranged at the top of the valve seat.

As shown in fig. 2 and 3, the valve core 4 includes a plurality of valve sub-cores 41 disposed around the valve core 4, a first receiving groove 42, a second receiving groove 43 and a third receiving groove 44 are disposed in the valve core 4, the diaphragm 3 is clamped in the first receiving groove 42, the second receiving groove 43 is disposed on one side of the first receiving groove 42 close to the cylinder assembly 2, the piston rod 21 of the cylinder assembly 2 is provided with an anti-rotation pin 211, and the piston rod 21 is clamped in the third receiving groove 44 and the anti-rotation pin 211 is embedded in the second receiving groove 43. Specifically, the partial valve bodies 41 may be provided in two, and the two partial valve bodies 41 are symmetrically provided. Of course other numbers may be provided; the first receiving grooves 42 may be circular grooves or others, the second receiving grooves 43 may include rectangular grooves or others, and the third receiving grooves 44 may be circular grooves or others. And as shown in fig. 2, the outside of the valve core 4 is provided with a spring collar 8.

As shown in fig. 4 to 6, the diaphragm 3 includes a pin boss 31 and a first diaphragm body 32, a head portion of the pin boss 31 protrudes from a waist portion of the pin boss 31, and the first diaphragm body 32 is coupled to the pin boss 31. The pin boss 31 is a conical surface structure which is gradually expanded outwards along the direction close to the valve body 1; the first diaphragm body 32 is an EPDM diaphragm body, and the second diaphragm body 33 is an EPDM diaphragm body.

As an alternative embodiment, as shown in fig. 7 and 8, the diaphragm 3 includes a pin boss 31, a second diaphragm body 33, and a third diaphragm body 34, the second diaphragm body 33 is coupled to the pin boss 31, and the third diaphragm body 34 is coupled to the second diaphragm body 33. That is, the diaphragm 3 does not include the first diaphragm body 32 but includes the second diaphragm body 33 and the third diaphragm body 34. The second diaphragm body 33 and the third diaphragm body 34 are bonded as shown in fig. 7 or separated as shown in fig. 8, the second diaphragm body 33 is an EPDM diaphragm body, and the third diaphragm body 34 is a PTFE diaphragm body. EPDM and PTFE are ethylene propylene diene monomer and polytetrafluoroethylene, respectively.

As shown in fig. 2 and 3, a piston 22 of the cylinder assembly 2 is disposed on one side of the piston rod 21 away from the valve body 1, the piston rod 21 is screwed into the piston 22, a guide rod 23 is disposed on one side of the piston 22 away from the piston rod 21, and a flat square 231 is disposed at the top end of the guide rod 23. By providing the flat square 231, the force is facilitated. Wherein the top of guide bar 23 is equipped with the vertical tangent plane and the slope tangent plane of connection in order to form oblate 231, is equipped with vertical tangent plane, slope tangent plane along the direction that is close to valve body 1 in proper order.

As shown in fig. 2, 9 and 10, a first sealing ring 71 is disposed in a fourth receiving groove outside the piston 22, a step surface is disposed on an outer wall of a side of the piston 22 away from the valve body 1, the helical compression spring 24 is disposed on the step surface, and a second sealing ring 72 is disposed outside the piston rod 21. Specifically, the first sealing ring 71 and the second sealing ring 72 are both elastic lip structures, the first sealing ring 71 is arranged in an inverted V shape, the height of the inner diameter position of the first sealing ring 71 is two times or other than the height of the outer diameter position, the second sealing ring 72 is arranged in a V shape, and the height of the inner diameter position of the second sealing ring 72 is half of the height of the outer diameter position; the fourth containing groove is an annular groove or the like. Through being provided with elasticity lip structure, the wearability is better, and is sealed more reliable, and life is longer.

As shown in fig. 1 and fig. 2, a first air chamber is formed on one side of the piston 22 close to the valve body 1, and the first air chamber is provided with an air nozzle passage; a second air chamber is formed on one side of the piston 22 far away from the valve body 1, and the two air chambers are provided with small exhaust holes; the cylinder body 25 of the cylinder component 2 is provided with a cylinder upper cover 26 of the cylinder component 2, the cylinder upper cover 26 is provided with a gland nut 27 of the cylinder component 2, and the gland nut 27 is internally provided with an indicating sleeve 28; a first sliding bearing 291 is provided outside the piston rod 21 and a second sliding bearing 292 is provided outside the guide rod 23.

The utility model discloses a diaphragm valve convenient to processing installation, enclose through a plurality of minute case 41 and close and

form case

4 and 3 joints of diaphragm piece in first storage tank 42, realize case 4 and diaphragm piece 3's joint, high durability and convenient installation, and the elasticity degree of easy control installation, make diaphragm piece 3 and case 4's connection more reliable, thereby the life of diaphragm piece 3 has been prolonged, and case 4 need not to process the screw hole and can directly use, and is convenient for process, practice thrift the processing cost and ensured the centering installation of diaphragm piece 3, the size of diaphragm valve has still been reduced, make the diaphragm valve smaller and more exquisite, compact, the installation space of diaphragm valve has been reduced.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A diaphragm valve for easy installation and manufacture, comprising:

a valve body;

a cylinder assembly;

2. The diaphragm valve convenient to machine and install of claim 1, wherein the valve core is provided with a second receiving groove, the second receiving groove is formed in a side, close to the cylinder assembly, of the first receiving groove, and a piston rod of the cylinder assembly is provided with an anti-rotation pin, and the anti-rotation pin is embedded in the second receiving groove.

3. A diaphragm valve of claim 2 in which said diaphragm includes a pin boss, the head of said pin boss protruding from the waist of said pin boss.

4. A diaphragm valve of the type set forth in claim 3 wherein said pin projection is a tapered structure, said tapered structure flaring progressively in a direction closer to said valve body.

5. The diaphragm valve of claim 4 where said diaphragm further comprises a first diaphragm body, said first diaphragm body attached to said pin boss.

6. The diaphragm valve of claim 4 wherein said diaphragm further comprises a second diaphragm body attached to said dowel boss and a third diaphragm body attached to said second diaphragm body.

7. The diaphragm valve of claim 6, wherein the second diaphragm body and the third diaphragm body are bonded or separated, the second diaphragm body is an EPDM diaphragm body, and the third diaphragm body is a PTFE diaphragm body.

8. A diaphragm valve easy to manufacture and install according to claim 2, wherein the side of said piston rod remote from said valve body is provided with a piston of said cylinder assembly, and the side of said piston remote from said piston rod is provided with a guide rod.

9. The diaphragm valve of claim 8 where said piston has a first seal disposed thereon and said piston rod has a second seal disposed thereon.

10. The diaphragm valve of claim 9, wherein the first sealing ring and the second sealing ring are both of an elastic lip structure, the first sealing ring is disposed in an inverted V shape, and the second sealing ring is disposed in a V shape.