CN215059571U

CN215059571U - Pneumatic butterfly valve

Info

Publication number: CN215059571U
Application number: CN202121384010.1U
Authority: CN
Inventors: 金建淼; 周梅丽; 李智勇
Original assignee: Shanghai Samusen Valve Co ltd
Current assignee: Shanghai Samusen Valve Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-07
Anticipated expiration: 2031-06-21

Abstract

The utility model relates to a pneumatic butterfly valve, including valve body, disk seat, butterfly plate, valve rod and base, be provided with the runner on the valve body, the valve rod sets up on the valve body along vertical direction rotation in the runner, and the disk seat sets up inside the valve body, and the butterfly plate sets up on the valve rod and along with valve rod synchronous motion, and the butterfly plate constitutes the closure of runner with the sealed cooperation of disk seat, the valve body lower part be provided with the valve way that supplies the valve rod to pass, the other end that the runner was kept away from relatively to the valve way is provided with the ladder groove and the ladder groove extends to outside the valve body, be provided with on the base with the rotation arch of ladder groove looks adaptation, rotate arch and ladder groove screw-thread fit, the valve rod lower extreme is provided with the external screw thread, rotate the protruding linkage groove that is provided with and be provided with valve rod size looks adaptation, be provided with the internal thread with external screw-thread looks adaptation in the linkage groove.

Description

Pneumatic butterfly valve

Technical Field

The utility model relates to a valve, concretely relates to pneumatic butterfly valve.

Background

The butterfly valve is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by the rotation of the butterfly plate around a valve rod.

At present, for preventing the valve rod from moving along the axial direction, the decline of the leakproofness is caused, the base that is used for the location is usually set up to the bottom of the valve rod, and the valve rod divide into integral and split type with the base, and integral makes manufacturing cost high, and the material is extravagant in a large number, and split type adopts the welding at present for the assembly degree of difficulty is high, causes assembly error easily, and scraps, can make valve rod and base produce the deformation during welding simultaneously, need carry out secondary operation, causes the increase of artifical volume.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a valve rod and disk seat screw-thread fit's pneumatic butterfly valve.

In order to achieve the above purpose, the utility model provides a following technical scheme: including valve body, disk seat, butterfly plate, valve rod and base, be provided with the runner on the valve body, the valve rod rotates along vertical direction in the runner and sets up on the valve body, and the disk seat sets up inside the valve body, and the butterfly plate sets up on the valve rod and along with valve rod synchronous motion, and the butterfly plate constitutes the closure of runner with the sealed cooperation of disk seat, the valve body lower part be provided with the valve way that supplies the valve rod to pass, the other end that the runner was kept away from relatively to the valve way is provided with ladder groove and extends to outside the valve body, be provided with on the base with the rotation arch of ladder groove looks adaptation, rotate arch and ladder groove screw-thread fit, the valve rod lower extreme is provided with the external screw thread, rotate the arch on be provided with the linkage groove with valve rod size looks adaptation, be provided with the internal thread with external screw thread looks adaptation in the linkage groove.

Through adopting above-mentioned technical scheme, the valve rod lower extreme passes during the valve way reaches the ladder groove to relative with the link groove, rotatory valve rod makes during valve rod lower extreme screw in link groove, and the valve rod rotates with the base is synchronous this moment, plays the base to the valve rod at axial limiting displacement, and the installation between valve rod and the base is simple, dismantles simply, need not worry the mistake appearing when installing, corrects easily, and normal running fit between base and the valve body can adopt draw-in groove and fixture block to reach.

The utility model discloses further set up to: including the disk seat pressure disk, the disk seat pressure disk is fixed to be set up on the valve body, the disk seat has the portion of supporting mutually, spacing portion of elasticity and fixed part, the portion of supporting has the inclined plane of supporting with the butterfly plate counterbalance, be provided with fixed recess on the disk seat pressure disk, fixed recess forms fixed slot and fixed part with the valve body and sets up in the fixed slot fixedly, spacing portion of elasticity has spacing arch, be provided with spacing recess on the disk seat pressure disk and spacing arch is located spacing recess, spacing recess has the plane of extrusion and recovers face and the plane of extrusion and restore the face and set up relatively, when the butterfly plate offsets with supporting the inclined plane of pressing, spacing portion of elasticity offsets with the plane of extrusion, when the butterfly plate departed with supporting the inclined plane of pressing, spacing portion of elasticity offsets with recovering the face.

By adopting the technical scheme, for the leakproofness, the sealing fit between the valve seat and the butterfly plate is undoubtedly the most important, the fixed part is fixed by the fixed groove formed between the valve seat pressure plate and the valve body, the elastic limiting part is limited in the limiting groove, when the abutting inclined surface abuts against the butterfly plate, the elastic limiting part is extruded by the abutting part, the elastic limiting part moves towards the extrusion surface of the limiting groove and abuts against the extrusion surface, at the moment, due to the support of the extrusion surface, the elastic limiting part can not move any more, the sealing effect is good, when the butterfly plate rotates and is separated from the abutting inclined surface, the elastic limiting part is separated from the extrusion surface under the action of self elasticity and is close to the restoration surface, when the valve seat is not stressed, the elastic limiting part can not be always in a deformation state, the service life of the elastic limiting part is prolonged, and the sealing effect of the valve seat is maintained.

The utility model discloses further set up to: the valve seat gland and the valve body are fixed through bolts.

Through adopting above-mentioned technical scheme, during the installation, install the disk seat on the valve body earlier, pass through hexagon socket head cap screw with the disk seat gland again and fix on the valve body, accomplish fixed and the installation to the disk seat, and dismantle simply, easily operation.

The utility model discloses further set up to: and a self-lubricating bearing is arranged between the valve rod and the inner wall of the valve channel.

By adopting the technical scheme, the self-lubricating bearing can be maintained in a non-maintenance or less maintenance mode when in use, so that excessive maintenance is not needed in long-time use, and the manual input is reduced.

The utility model discloses further set up to: the stepped groove include last stepped groove and lower stepped groove, set up the sealing washer down stepped groove and rotate between the arch, go up stepped groove and valve way size looks adaptation.

Through adopting above-mentioned technical scheme, the setting up of sealing washer prevents revealing of medium and leads to the damage of whole device.

The utility model discloses further set up to: the butterfly plate is fixed on the valve rod through a pin and synchronously rotates along with the valve rod.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

FIG. 2 is a partial enlarged view A of the present invention;

FIG. 3 is a partial enlarged view B of the present invention;

fig. 4 is a schematic structural view of another overall view angle of the present invention.

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.

As shown in FIGS. 1-4, the utility model discloses a pneumatic butterfly valve, which comprises a valve body 1, a valve seat 2, a butterfly plate 3, a valve rod 4 and a base 5, wherein the valve body 1 is provided with a flow passage 11, the valve rod 4 is rotatably arranged on the valve body 1 along the direction vertical to the flow passage 11, the valve seat 2 is arranged inside the valve body 1, the butterfly plate 3 is arranged on the valve rod 4 and moves synchronously with the valve rod 4, the butterfly plate 3 and the valve seat 2 are in sealing fit to form the seal of the flow passage 11, the lower part of the valve body 1 is provided with a valve passage 12 for the valve rod 4 to pass through, the other end of the valve passage 12, which is relatively far away from the flow passage 11, is provided with a stepped groove 13, the stepped groove 13 extends out of the valve body 1, the base 5 is provided with a rotary projection 51 matched with the stepped groove 13, the rotary projection 51 is in threaded fit with the stepped groove 13, the lower end of the valve rod 4 is provided with an external thread, the rotary projection 51 is provided with a linkage groove 52 matched with the size of the valve rod 4, be provided with the internal thread with external screw thread looks adaptation in the link groove 52, valve rod 4 lower extreme passes during valve way 12 reaches ladder groove 13, and relative with link groove 52, rotatory valve rod 4 makes in valve rod 4 lower extreme screw in link groove 52, valve rod 4 rotates with base 5 is synchronous this moment, play base 5 to valve rod 4 at axial limiting displacement, and the installation between valve rod 4 and the base 5 is simple, it is simple to dismantle, need not worry that mistake appears when installing, correct easily, and normal running fit between base 5 and the valve body 1 can adopt draw-in groove and fixture block to reach.

Comprises a valve seat pressure plate 6, the valve seat pressure plate 6 is fixedly arranged on a valve body 1, a valve seat 2 is provided with an abutting part 21, an elastic limiting part 22 and a fixing part 23, the abutting part 21 is provided with an abutting inclined surface abutting against a butterfly plate 3, the valve seat pressure plate 6 is provided with a fixing recess 61, the fixing recess 61 and the valve body 1 form a fixing groove 15, the fixing part 23 is fixedly arranged in the fixing groove 15, the elastic limiting part 22 is provided with a limiting bulge 221, the valve seat pressure plate 6 is provided with a limiting groove 62, the limiting bulge 221 is positioned in the limiting groove 62, the limiting groove 62 is provided with a squeezing surface 621 and a restoring surface 622, the squeezing surface 621 and the restoring surface 622 are oppositely arranged, when the butterfly plate 3 abuts against the abutting inclined surface, the elastic limiting part 22 abuts against the squeezing surface 621, when the butterfly plate 3 is separated from the abutting inclined surface, the elastic limiting part 22 abuts against the restoring surface 622, and the sealing fit between the valve seat 2 and the butterfly plate 3 is undoubtedly the most important for sealing property, the fixing portion 23 is fixed by the fixing groove 15 formed between the valve seat pressure plate 6 and the valve body 1, the elastic limiting portion 22 is limited in the limiting groove 62, when the abutting inclined surface abuts against the butterfly plate 3, the abutting portion 21 extrudes the elastic limiting portion 22, the elastic limiting portion 22 moves towards the extrusion surface 621 of the limiting groove 62 and abuts against the extrusion surface 621, at the moment, due to the support of the extrusion surface 621, the elastic limiting portion 22 cannot move any more, the sealing effect is good, when the butterfly plate 3 rotates and separates from the abutting inclined surface, the elastic limiting portion 22 separates from the extrusion surface 621 under the elastic action of the elastic limiting portion 22, and is close to the restoration surface 622, when the valve seat 2 is not stressed, the elastic limiting portion 22 cannot be in a deformation state all the time, the service life of the elastic limiting portion 22 is prolonged, and the sealing effect of the valve seat 2 is kept.

The valve seat 2 gland and the valve body 1 are fixed through the bolts, during installation, the valve seat 2 is installed on the valve body 1, and then the valve seat 2 gland is fixed on the valve body 1 through the hexagon socket head cap bolts, so that the valve seat 2 is fixed and installed, and the valve seat 2 gland is simple to disassemble and easy to operate.

A self-lubricating bearing 14 is arranged between the valve rod 4 and the inner wall of the valve channel 12, and the self-lubricating bearing 14 can be maintained or maintained less when in use, so that excessive maintenance is not needed when the valve is used for a long time, and the manual input is reduced.

The stepped groove 13 comprises an upper stepped groove 131 and a lower stepped groove 132, a sealing ring 7 is arranged between the lower stepped groove 132 and the rotary protrusion 51, the upper stepped groove 131 is matched with the valve passage 12 in size, and the sealing ring 7 is arranged to prevent the medium leakage from causing damage to the whole device.

The butterfly plate 3 is fixed on the valve rod 4 through a pin and synchronously rotates along with the valve rod 4.

Claims

1. The utility model provides a pneumatic butterfly valve, includes valve body, disk seat, butterfly plate, valve rod and base, is provided with the runner on the valve body, and the valve rod rotates along vertical direction in the runner to set up on the valve body, and the disk seat sets up inside the valve body, and the butterfly plate sets up on the valve rod and along with valve rod synchronous motion, and the butterfly plate constitutes the closure of runner, its characterized in that with the sealed cooperation of disk seat: the valve body lower part be provided with the valve way that supplies the valve rod to pass, the other end that the runner was kept away from relatively to the valve way is provided with ladder groove and extends to outside the valve body, be provided with on the base with the rotation arch of ladder groove looks adaptation, rotate protruding and ladder groove normal running fit, the valve rod lower extreme is provided with the external screw thread, rotate the overhead linkage groove that is provided with and valve rod size looks adaptation, be provided with the internal thread with external screw thread looks adaptation in the linkage groove.

2. The pneumatic butterfly valve of claim 1, wherein: including the disk seat pressure disk, the disk seat pressure disk is fixed to be set up on the valve body, the disk seat has the portion of supporting mutually, spacing portion of elasticity and fixed part, the portion of supporting has the inclined plane of supporting with the butterfly plate counterbalance, be provided with fixed recess on the disk seat pressure disk, fixed recess forms fixed slot and fixed part with the valve body and sets up in the fixed slot fixedly, spacing portion of elasticity has spacing arch, be provided with spacing recess on the disk seat pressure disk and spacing arch is located spacing recess, spacing recess has the plane of extrusion and recovers face and the plane of extrusion and restore the face and set up relatively, when the butterfly plate offsets with supporting the inclined plane of pressing, spacing portion of elasticity offsets with the plane of extrusion, when the butterfly plate departed with supporting the inclined plane of pressing, spacing portion of elasticity offsets with recovering the face.

3. The pneumatic butterfly valve of claim 1, wherein: the valve seat gland and the valve body are fixed through bolts.

4. The pneumatic butterfly valve of claim 1, wherein: and a self-lubricating bearing is arranged between the valve rod and the inner wall of the valve channel.

5. The pneumatic butterfly valve of claim 4, wherein: the stepped groove include last stepped groove and lower stepped groove, set up the sealing washer down stepped groove and rotate between the arch, go up stepped groove and valve way size looks adaptation.

6. The pneumatic butterfly valve of claim 1, wherein: the butterfly plate is fixed on the valve rod through a pin and synchronously rotates along with the valve rod.