CN210600215U - Butterfly valve - Google Patents

Abstract

The utility model discloses a butterfly valve. A butterfly valve comprises a valve body, a valve seat, a butterfly plate, an upper valve rod rotating shaft, a lower valve rod rotating shaft and a fastening device for axially and hermetically connecting the upper valve rod rotating shaft with an upper valve body shaft hole; the valve body upper shaft hole and the valve rod upper shaft axial sealing connection fastening device is a valve rod upper shaft sleeve, and a circular lug plate is arranged on one side of the upper end of the valve rod upper shaft sleeve; the valve seat vertical jacking device comprises a valve body and a valve seat vertical jacking device, and 2 flat-end fastening screws can longitudinally jack the valve seat installed in the valve body. The axial sealing connection and fastening of the butterfly valve body and the rotating shaft on the valve rod of the utility model are realized, and the leakage risk of the shaft hole part on the valve body is avoided; the 2 flat-end fastening screws exert longitudinal axial force on the valve seat in the bolt holes in the body wall of the left side and the right side of the valve body, so that the valve seat is longitudinally fastened, the damaged butterfly valve seat is conveniently detached and replaced, and the pollution to the environment is eliminated.

Description

Butterfly valve

Technical Field

The utility model belongs to a valve especially belongs to a butterfly valve.

Background

The butterfly valve mostly comprises a valve body, a valve seat, a valve rod upper rotating shaft, a butterfly plate and a valve rod lower rotating shaft. At present, the axial sealing connection and fastening of the rotating shaft on the valve body and the valve rod of the existing butterfly valve are mostly realized by matching a snap spring for a hole and a snap spring for a shaft or matching and installing a U-shaped snap plate. The connecting mode takes the butterfly plate and the valve body into consideration on the basis of realizing the matching of the sizes of the rotating shaft and the butterfly plate on the valve rod, the matching relation is complex due to the matching of the installation sizes of the rotating shaft and the valve body on the valve rod, the problem that the size design requirement on the rotating shaft on the valve rod is high is solved, and meanwhile, the replacement is difficult due to the fact that more parts need to be used in a matched mode; in addition, the existing butterfly valve body used for the tail end of the pipeline generally adopts a vulcanization integrated rubber coating process with the butterfly valve body and the valve seat in order to guarantee the tightness and the sealing performance of the valve seat, so that the integrity and the stability of the butterfly valve body and the valve seat are improved, and the risk of falling off of the valve seat is avoided. Although the integral encapsulation process of the butterfly valve body and the valve seat improves the structure of the integrity and the stability of the butterfly valve body and the valve seat, when the valve seat is damaged and needs to be disassembled and replaced due to cracks, the valve seat needs to be replaced after the encapsulating layer of the valve seat is burnt, and the vulcanization encapsulation is carried out again, so that the valve seat is difficult to replace, and the environment is polluted due to the fact that the encapsulating layer of the valve seat is burnt. How to conveniently realize the axial sealing connection and fastening of the butterfly valve body and the rotating shaft on the valve rod; how promote butterfly valve body and disk seat wholeness, steadiness, prevent the risk that the disk seat drops, still convenient realization is dismantled the change to damaging the butterfly valve disk seat, reduces butterfly valve disk seat vulcanization rubber coating material consumption, still not causing the problem that the pollution needs to be solved to the environment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a butterfly valve is provided. The axial sealing connection and fastening of the valve body of the butterfly valve and the rotating shaft on the valve rod can be conveniently realized by using the butterfly valve; can promote butterfly valve body and disk seat wholeness, steadiness, prevent that the risk that the disk seat drops from appearing, the realization that can also be convenient is dismantled the change to damaging the butterfly valve disk seat, reduces butterfly valve disk seat vulcanization rubber coating material and consumes, still does not cause the pollution to the environment.

The utility model provides a technical scheme of above-mentioned technical problem is: the utility model provides a butterfly valve, pivot under the valve rod on valve body, disk seat, butterfly plate, the valve rod, the valve body has shaft hole, lower shaft hole, characterized by: the valve body upper shaft hole and the valve rod upper shaft are axially and hermetically connected with a fastening device; the axial sealing connection fastening device for the upper shaft hole of the valve body and the upper shaft of the valve rod is a shaft sleeve of the upper shaft of the valve rod, one side of the upper end of the shaft sleeve of the upper shaft of the valve rod is provided with a circular lug plate, the shaft sleeve of the upper shaft of the valve rod and the circular lug plate arranged on one side of the upper end of the shaft sleeve of the upper shaft of the valve rod are integrally formed, a bolt hole is arranged on the circular lug plate arranged on one side of the upper end of the shaft sleeve of the upper shaft of the valve rod, when the upper shaft of the valve rod sleeved with the shaft sleeve of the upper shaft of the integrally formed lug plate and the upper shaft sleeve of the valve rod is arranged in the upper shaft hole of the valve body, and the axial sealing connection fastening of the upper shaft;

the valve body and the valve seat longitudinal jacking device are 2 flat-end fastening screws, screw holes matched with the flat-end fastening screws are respectively arranged on the transverse central axis of the left side wall and the right side wall of the valve body, the 2 flat-end fastening screws are respectively arranged in screw holes respectively arranged on the transverse central axis of the left side wall and the right side wall of the valve body, the 2 flat-end fastening screws which are respectively arranged in the screw holes on the transverse central axis of the left side wall and the right side wall of the valve body are screwed, and the 2 flat-end fastening screws can longitudinally jack the valve seat arranged in the valve body.

The utility model has the advantages that: because the utility model is provided with the fastening device for axial sealing connection between the upper shaft hole of the valve body and the upper shaft of the valve rod; the shaft hole on the valve body and the valve rod go up the axle shaft sleeve of axial sealing connection fastener for the valve rod, the valve rod is gone up axle shaft sleeve upper end one side and is provided with circular otic placode, the integrative taking shape of circular otic placode that sets up in axle shaft sleeve upper end one side on axle shaft sleeve and the valve rod of rotating on the axle shaft sleeve, install in the axle hole on the valve body when installing the cover on the valve rod that the upper end has the integrative otic placode axle sleeve that takes shape on the valve rod, the valve rod is gone up the round otic placode that the integrative taking shape of upper end has the bolt hole and is used when bolt fixed mounting on the top surface on the valve body outside the axle hole on the valve body, can realize. The axial sealing connection and fastening of the butterfly valve body and the rotating shaft on the valve rod of the utility model are conveniently realized, the surface of the rotating shaft sleeve on the valve rod is combined with the surface of the rotating shaft on the valve rod, the connection tightness and the axial stability of the rotating shaft sleeve on the valve rod and the rotating shaft on the valve rod are realized, and the leakage risk of the shaft hole part on the valve body is also avoided; the shaft sleeve on the valve rod replaces structures such as a snap spring, a flat gasket, a valve body ring groove and the like, so that the butterfly valve of the utility model cancels a more complicated machining procedure, and reduces the number of accessories; for the jump ring cooperation structure of traditional butterfly valve more simple, processing is convenient, and the assembly degree of difficulty is little. The utility model discloses the butterfly valve has still effectively prevented that the pivot from deviating from the phenomenon in shaft hole on the valve body from taking place on the valve rod.

Because the utility model discloses still set up the vertical tight device in top of valve body and disk seat, the valve body is 2 flush end fastening screw with the vertical tight device in top of disk seat, and 2 flush end fastening screw install respectively on the horizontal axis of valve body left and right sides body wall in the screw hole that sets up respectively, screw and install respectively on the horizontal axis of valve body left and right sides body wall in the screw hole 2 flush end fastening screw, 2 flush end fastening screw can be with the vertical tight of disk seat top of this valve body interior installation. The utility model has the advantages that 2 flat-end fastening screws of the butterfly valve exert longitudinal axial force on the valve seat in the wall bolt holes on the left side and the right side of the valve body, thereby playing the role of longitudinal fastening to the valve seat, when the damaged butterfly valve seat is disassembled and replaced, the 2 flat-end fastening screws are rotated reversely, and the disassembly and replacement of the damaged butterfly valve seat are conveniently realized; the butterfly valve of the utility model has the characteristics of the integration and the stability of the integrated rubber-coated valve body and the valve seat of the traditional butterfly valve and also has the characteristics of convenient disassembly; the utility model discloses 2 flat-end fastening screws of butterfly valve have replaced the integrative rubber coating of traditional butterfly valve, have cancelled the comparatively complicated processing technology of traditional butterfly valve, simple structure, and no longer need burn the rubber coating layer and vulcanize the rubber coating again to damaging the butterfly valve disk seat, have reduced the utility model discloses butterfly valve manufacturing cost has still eliminated the pollution to the environment.

Drawings

The present invention will be further explained with reference to the drawings and examples;

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged perspective view of the shaft sleeve on the valve stem of the present invention;

in the drawings: 1. the valve comprises a valve body, 2 valve seats, 3 butterfly plates, 4 valve rod upper rotating shafts, 5 valve rod lower rotating shafts, 6 valve rod upper rotating shaft sleeves, 7 circular lug plates and 8 flat end fastening screws.

Detailed Description

The present invention will be described in further detail with reference to the following examples.

Example 1

As shown in fig. 1 and 2, a butterfly valve comprises a valve body 1, a valve seat 2, a butterfly plate 3, a valve rod upper rotating shaft 4, a valve rod lower rotating shaft 5, wherein the valve body 1 is provided with an upper shaft hole and a lower shaft hole, and is characterized in that: the valve body upper shaft hole and the valve rod upper shaft are axially and hermetically connected with a fastening device; the axial sealing connection fastening device of the upper shaft hole of the valve body and the upper shaft of the valve rod is a shaft sleeve 6 of the upper shaft of the valve rod, one side of the upper end of the shaft sleeve 6 of the upper shaft of the valve rod is provided with a circular lug plate 7, the shaft sleeve 6 of the upper shaft of the valve rod and the circular lug plate 7 arranged on one side of the upper end of the shaft sleeve 6 of the upper shaft of the valve rod are integrally formed, a bolt hole is arranged on the circular lug plate 7 arranged on one side of the upper end of the shaft sleeve 6 of the upper shaft of the valve rod, when the upper shaft of the valve rod sleeved with the shaft sleeve of the upper shaft of the integrally formed lug plate and the valve rod is arranged in the upper shaft hole of the valve body, and the circular lug plate 7 integrally formed with the bolt hole on the upper end of;

still include the vertical tight device in top of valve body and disk seat, the valve body is 2 flat-end fastening screw 8 with the vertical tight device in top of disk seat, be provided with respectively on the horizontal axis of 1 left and right sides body wall of this valve body with flat-end fastening screw matched with screw hole, 2 flat-end fastening screw install respectively on the horizontal axis of left and right sides body wall of valve body in the screw hole that sets up respectively (the observer is in the face of this utility model, the observer left side is the body left side body wall, the observer right side is the body right side body wall of valve body), 2 flat-end fastening screw 8 of installing respectively in the screw hole on the horizontal axis of 1 left and right sides body wall of valve body are screwed, 2 flat-end fastening screw 8 can be with the vertical tight of disk seat 2 of this 1.

From the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the present invention, and the present invention is within the protection scope of the present invention. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.

Claims (1)

1. The utility model provides a butterfly valve, pivot under the valve rod on valve body, disk seat, butterfly plate, the valve rod, the valve body has shaft hole, lower shaft hole, characterized by: the valve body upper shaft hole and the valve rod upper shaft are axially and hermetically connected with a fastening device; the valve body upper shaft hole and the valve rod upper shaft axial sealing connection fastening device is a valve rod upper shaft sleeve, one side of the upper end of the valve rod upper shaft sleeve is provided with a circular lug plate, the valve rod upper shaft sleeve and the circular lug plate arranged on one side of the upper end of the valve rod upper shaft sleeve are integrally formed, and a bolt hole is formed in the circular lug plate arranged on one side of the upper end of the valve rod upper shaft sleeve;

the valve body and the valve seat longitudinal jacking device are 2 flat-end fastening screws, screw holes matched with the flat-end fastening screws are respectively arranged on the transverse central axis of the left side wall and the right side wall of the valve body, and the 2 flat-end fastening screws are respectively arranged in screw holes respectively arranged on the transverse central axis of the left side wall and the right side wall of the valve body.

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