CN215172304U - Improved pneumatic butterfly valve - Google Patents

Abstract

The utility model provides a modified pneumatic butterfly valve belongs to the butterfly valve field. The utility model comprises a pneumatic actuator and a valve body, wherein a valve rod is arranged in the valve body, the valve rod penetrates through the valve body and penetrates out from the lower side of a bracket arranged at the lower side of the valve body, and the tail end of the valve rod is connected with a coupling arranged in the pneumatic actuator; a convex edge is formed on the lower side of the support, and a connecting piece is arranged between the convex edge and the pneumatic actuator. The utility model discloses be provided with the connecting piece between pneumatic butterfly valve's valve body and pneumatic actuator, the valve rod that makes the valve body forms non-sealing connection with the pneumatic actuator junction, can be eliminated the negative pressure that forms in the twinkling of an eye that the valve was closed, and various area such as muddy water pressed the water and can not get into the valve body, and then can not lead to the fact destruction to gas circuit and other equipment, has prolonged the life of equipment greatly.

Description

Improved pneumatic butterfly valve

Technical Field

The utility model belongs to the butterfly valve field, concretely relates to modified pneumatic butterfly valve.

Background

At present, the pneumatic butterfly valve device is widely applied to the field of water treatment, for example, a pulse clarification tank needs to be started to discharge sludge at intervals, and the sludge discharge process is realized through the pneumatic butterfly valve. The valve body of the pneumatic butterfly valve is connected with a mud pipe, and the pneumatic actuator is connected with a gas circuit with an electromagnetic valve. The pneumatic actuator of the existing pneumatic butterfly valve standard component is connected with the valve body in a bolt seamless hard connection mode.

Under this kind of seamless hard linking mode, this pneumatic butterfly valve can take place the wearing and tearing and ageing of sealing washer after using a period, and in the twinkling of an eye that the valve was closed, the negative pressure of formation can make various area such as mud-discharging water press water to pass through the shaft coupling and inhale the cylinder, causes the gas circuit to have water, leads to equipment to damage, causes great economic loss. The service life of the pneumatic butterfly valve and other equipment after maintenance can be greatly reduced. Because the import sealing washer supplies a material cycle long, above-mentioned phenomenon still can frequently take place after the change, if directly change whole import pneumatic butterfly valve, need modify pipeline, space, mounting means etc. many places, the cost input is too big, gives up most functional pneumatic butterfly valve simultaneously and causes the wasting of resources.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a propose in order to overcome the shortcoming that exists among the prior art, its purpose provides an improved pneumatic butterfly valve.

The utility model discloses a realize through following technical scheme:

an improved pneumatic butterfly valve comprises a pneumatic actuator and a valve body, wherein a valve rod is arranged in the valve body, the valve rod penetrates through the valve body and penetrates out of the lower side of a support arranged at the lower end of the valve body, and the tail end of the valve rod is connected with a coupling arranged at the upper part of the pneumatic actuator; a convex edge is formed on the lower side of the support, and a connecting piece is arranged between the convex edge and the pneumatic actuator.

In the technical scheme, the convex edge is provided with bolts which are uniformly distributed along the circumferential direction, and the bolts penetrate through the connecting piece and are fixed on the upper side of the pneumatic actuator.

In the above technical solution, the connecting member is a circular ring piece.

In the above technical scheme, the inner diameter and the outer diameter of the ring piece are respectively the same as those of the nut matched with the bolt.

In the technical scheme, each bolt penetrates through at least one circular ring piece, and the number of the circular ring pieces penetrated by each bolt is the same.

In the above technical scheme, the circular ring piece is sleeved on the valve rod.

In the technical scheme, the ring piece is provided with bolt through holes along the circumferential direction, and the number of the bolt through holes is matched with the number of bolts arranged on the convex edge.

In the above technical solution, the diameter of the bolt passing hole matches with the inner diameter of the bolt.

In the above technical scheme, the ring piece is a stainless steel gasket with the thickness of 1 mm.

The utility model has the advantages that:

the utility model provides a modified pneumatic butterfly valve is provided with the connecting piece between the support of pneumatic butterfly valve's valve body downside and the pneumatic actuator, makes the valve rod of valve body become non-sealing connection with the junction of pneumatic actuator, can make the negative pressure of the formation in the twinkling of an eye that the valve closed eliminated, and various area such as muddy water of draining can not get into pneumatic actuator, and then can not lead to the fact destruction to gas circuit and other equipment, has prolonged the life of equipment greatly.

Drawings

Fig. 1 is a schematic view of the front view structure of the present invention;

fig. 2 is a schematic side view structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A of the present invention;

fig. 4 is a schematic view of a connector structure according to an embodiment of the present invention;

fig. 5 is a schematic view of a connector structure according to another embodiment of the present invention.

Wherein:

1. a pneumatic actuator, 2, a valve body,

3. a connector, 301, the valve stem passes through the aperture,

302. the bolt passes through the hole, 4, the bracket,

401. a convex edge, 5. a valve rod,

6. a coupling, 7. a bolt,

8. a first compressed gas port, 9. a second compressed gas port.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be further described by the following detailed description with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-3, an improved pneumatic butterfly valve comprises a pneumatic actuator 1 and a valve body 2, wherein a valve rod 5 is arranged in the valve body 2, the valve rod 5 penetrates through the valve body 2 and penetrates out from the lower side of a support 4 arranged on the lower side of the valve body 2, and the tail end of the valve rod 5 is connected with a coupling 6 arranged on the upper part of the pneumatic actuator 1; the lower end of the support 4 forms a convex edge 401, and a connecting piece 3 is arranged between the convex edge 401 and the pneumatic actuator 1.

Such design changes into the connection that has certain clearance through the seamless hard link originally that will move the support 4 of the valve body 2 downside of butterfly valve and pneumatic actuator 1 junction into, makes the valve rod 5 of valve body 2 become non-sealing connection with pneumatic actuator 1's junction, the negative pressure that forms in the twinkling of an eye that the valve closed when pneumatic butterfly valve operation was moved is eliminated, solved originally because of the ageing problem that the muddy water of arranging of sealing washer is inhaled the gas circuit, and then can not lead to the fact destruction to gas circuit and other equipment, the security that has improved equipment operation and the life of equipment.

The improved pneumatic butterfly valve is characterized in that bolts 7 which are uniformly distributed along the circumferential direction are arranged on the convex edge 401, and the bolts 7 penetrate through the connecting piece 3 and are fixed on the upper side of the pneumatic actuator 1.

The improved pneumatic butterfly valve is characterized in that the connecting piece 3 is a circular ring piece.

The improved pneumatic butterfly valve is characterized in that the inner diameter and the outer diameter of the circular ring piece are respectively the same as those of the nut matched with the bolt 7.

Each bolt 7 penetrates through at least one circular ring piece, and the number of the circular ring pieces penetrated through each bolt 7 is the same; the number of the ring pieces can be selected as required, and when the effect of only setting one ring piece is not good, each bolt 7 can be considered to penetrate through a plurality of ring pieces with the same number.

The utility model discloses it is the same with the nut to add four sizes at four bolt 7 junctions of valve body and pneumatic actuator, and the stainless steel gasket about thickness 1mm makes valve rod 5 of valve body 2 become non-sealing connection with pneumatic actuator 1's junction, has improved the seamless hard connected mode between valve body 2 and the pneumatic actuator 1 of former pneumatic butterfly valve. During the operation process of the pneumatic butterfly valve, negative pressure formed at the moment when the valve is closed is eliminated, various pressurized water such as sludge water cannot enter the pneumatic actuator 1, the problem that the sludge water is sucked into a gas circuit due to the aging of a sealing ring is solved, and the operation safety of equipment and the service life of the equipment are improved.

Example 2:

on the basis of embodiment 1, it can be further considered that the improved pneumatic butterfly valve is provided with a connecting piece which is a circular ring piece sleeved on the valve rod, as shown in fig. 4, a valve rod through hole 301 is formed in the middle of the circular ring piece, bolt through holes 302 are circumferentially formed in the circular ring piece, the number of the bolt through holes 302 is matched with the number of bolts 7 arranged on the convex edge 401, and the diameter of the bolt through holes 302 is matched with the inner diameter of the bolts 7. The gasket can also achieve the aim of eliminating negative pressure, and simultaneously reduces the number of parts, so that the parts are easier to manage.

Taking embodiment 1 as an example, the pneumatic butterfly valve is applied to a sludge discharge system, the valve body 2 is arranged in a sludge discharge pipe, the pneumatic actuator 1 is connected with a gas circuit with an electromagnetic valve, and a first compressed gas connector 8 and a second compressed gas connector 9 are arranged on the side surface of the pneumatic actuator 1. When sludge needs to be discharged, compressed air enters the pneumatic actuator 1 from the first compressed air interface 8 and is discharged from the second compressed air interface 9; after the mud discharging, compressed air enters from the second compressed gas interface 9 and is discharged from the first compressed gas interface 8, the compressed gas in the pneumatic actuator 1 in the process pushes the piston to drive the rotating shaft arranged in the pneumatic actuator to move, and further, the rotating shaft is connected with the valve rod 5 through the coupler 6 and drives the valve rod 5 to rotate so as to control the opening and closing of the valve arranged on the valve body 1.

The sealing washer wearing and tearing ageing in rotation axis bottom and pneumatic actuator 1 upper portion can take place for pneumatic butterfly valve among the prior art after using a period, and in the moment of the valve is closed, the negative pressure of formation can make various area such as blowdown water press water to pass through shaft coupling and rotation axis suction cylinder, causes the gas circuit to have water, causes equipment damage.

The utility model provides a modified pneumatic butterfly valve is provided with the connecting piece between pneumatic butterfly valve's valve body and pneumatic actuator, makes the valve rod and the pneumatic actuator junction of valve body form non-sealing connection, can make the negative pressure of the formation in the twinkling of an eye that the valve closed eliminated, and various area such as muddy water press the water can not get into pneumatic actuator, and then can not lead to the fact destruction to gas circuit and other equipment, has prolonged the life of equipment greatly.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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 simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to 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 by those of ordinary skill in the art through specific situations.

The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.

Claims (9)

1. The utility model provides an improved pneumatic butterfly valve, includes pneumatic actuator (1) and valve body (2), be provided with valve rod (5) in valve body (2), its characterized in that: the valve rod (5) penetrates through the valve body (2) and penetrates out of the lower side of a support (4) arranged on the lower side of the valve body (2), and the tail end of the valve rod (5) is connected with a coupler (6) arranged on the upper portion of the pneumatic actuator (1); a convex edge (401) is formed at the lower end of the support (4), and a connecting piece (3) is arranged between the convex edge (401) and the pneumatic actuator (1).

2. An improved pneumatic butterfly valve as claimed in claim 1, wherein: bolts (7) which are uniformly distributed along the circumferential direction are arranged on the convex edge (401), and the bolts (7) penetrate through the connecting piece (3) and are fixed on the upper side of the pneumatic actuator (1).

3. An improved pneumatic butterfly valve as claimed in claim 2, wherein: the connecting piece (3) is a circular ring piece.

4. An improved pneumatic butterfly valve as claimed in claim 3, wherein: the inner diameter and the outer diameter of the circular ring piece are respectively the same as those of the nut matched with the bolt (7).

5. An improved pneumatic butterfly valve as claimed in claim 4, wherein: each bolt (7) penetrates through at least one circular ring piece, and the number of the circular ring pieces penetrated by each bolt (7) is the same.

6. An improved pneumatic butterfly valve as claimed in claim 3, wherein: the circular ring piece is sleeved on the valve rod (5).

7. An improved pneumatic butterfly valve as claimed in claim 6, wherein: the ring piece is provided with bolt through holes (302) along the circumferential direction, and the number of the bolt through holes (302) is matched with the number of bolts (7) arranged on the convex edge (401).

8. An improved pneumatic butterfly valve as claimed in claim 7, wherein: the diameter of the bolt passage hole (302) matches the inner diameter of the bolt (7).

9. An improved pneumatic butterfly valve according to one of claims 3 to 8, characterized in that: the ring piece is a stainless steel gasket with the thickness of 1 mm.

Images