阅读说明：本技术 一种手柄齿盘蝶阀 (Handle fluted disc butterfly valve ) 是由 刘震庸 王明军 张生辰 焦仕学 李占超 付兴新 满宏蓉 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种手柄齿盘蝶阀。一种手柄齿盘蝶阀,包括阀体、阀座、阀杆上转轴、阀杆下转轴,阀杆上转轴相对于阀体的转动限位装置,阀杆上转轴相对于阀体的转动限位装置为弹性圆柱销；还包括阀杆上转轴与阀体密封装置,阀杆上转轴与阀体密封装置为橡胶密封圈,还包括阀体与阀座纵向顶紧装置,阀体与阀座纵向顶紧装置为2个平端紧固螺钉。方便的实现了本发明手柄齿盘蝶阀阀体与阀杆上转轴的轴向密封连接紧固；方便的实现了阀杆上转轴的拆卸更换,提高了阀体与阀杆上转轴的轴向密封性；方便的实现了对损坏手柄齿盘蝶阀阀座拆卸更换,还消除了对环境的污染。(The invention discloses a handle fluted disc butterfly valve. A handle fluted disc butterfly valve comprises a valve body, a valve seat, an upper valve rod rotating shaft and a lower valve rod rotating shaft, wherein the upper valve rod rotating shaft is a rotation limiting device relative to the valve body, and the upper valve rod rotating shaft is an elastic cylindrical pin relative to the rotation limiting device of the valve body; the valve body and the valve seat longitudinal jacking device are 2 flat-end fastening screws. The axial sealing connection and fastening of the handle fluted disc butterfly valve body and the rotating shaft on the valve rod are conveniently realized; the disassembly and replacement of the rotating shaft on the valve rod are conveniently realized, and the axial sealing property of the valve body and the rotating shaft on the valve rod is improved; the damaged handle fluted disc butterfly valve seat is conveniently detached and replaced, and the pollution to the environment is also eliminated.)

1. The utility model provides a handle fluted disc butterfly valve, pivot under the valve rod on valve body, disk seat, butterfly plate, handle, fluted disc, top flange, the valve rod, the valve body has shaft hole, lower shaft hole, characterized by: the valve also comprises a rotation limiting device of the rotating shaft on the valve rod relative to the valve body; the rotation limiting device of the upper rotating shaft of the valve rod relative to the valve body is an elastic cylindrical pin, a blind hole which is in interference fit with the elastic cylindrical pin is arranged on a neck of the valve body, a semicircular annular groove is arranged on the rotating shaft on the valve rod at the position corresponding to the blind hole arranged on the neck of the valve body, the diameter of the semicircular annular groove arranged on the rotating shaft on the valve rod is consistent with that of the blind hole arranged on the neck of the valve body, when the upper rotating shaft of the valve rod is inserted into the upper shaft hole of the valve body, the blind hole arranged on the neck of the valve body coincides with the center of the cross section of the semicircular arc annular groove arranged on the upper rotating shaft of the valve rod, when the elastic cylindrical pin is pushed into the neck of the valve body from a blind hole formed in the neck of the valve body by using external force, the elastic cylindrical pin can be in rotating fit with the surface of the semicircular arc-shaped annular groove formed in the rotating shaft on the valve rod, and the elastic cylindrical pin is in rotating fit with the surface of the semicircular arc-shaped annular groove formed in the rotating shaft on the valve rod, so that the upper rotating shaft of the valve rod can be axially limited and fixed relative to the valve body; the valve also comprises a valve rod upper rotating shaft and a valve body sealing device; the rotary shaft and the valve body sealing device on the valve rod are rubber sealing rings, the vertical section of the rubber sealing ring is in an ear shape, an annular pit which is matched with the ear-shaped rubber sealing ring is arranged on the inner wall of the upper end part of the valve body upper shaft hole, when the rotary shaft on the valve rod, which is sleeved with the ear-shaped rubber sealing ring, of the vertical section is inserted into the annular pit arranged on the inner wall of the upper end part of the valve body upper shaft hole, the vertical section sleeved on the rotary shaft on the valve rod is in the ear-shaped rubber sealing ring, when the top flange is fixed on the top surface of the neck of the valve body by using a bolt, the top flange can compress the vertical section sleeved on the rotary shaft on the valve rod and is in the ear-shaped rubber sealing ring, and the vertical section is in the ear-shaped rubber sealing ring and.

2. The handle fluted disc butterfly valve of claim 1, wherein: the handle fluted disc butterfly valve further comprises a valve body and a valve seat longitudinal jacking device, wherein 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 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.

Technical Field

The invention belongs to a butterfly valve, in particular to a handle fluted disc butterfly valve.

Background

The handle fluted disc butterfly valve mostly comprises a valve body, a valve seat, a butterfly plate, a handle, a fluted disc, a top flange, a valve rod upper rotating shaft, the butterfly plate and a valve rod lower rotating shaft. At present, axial sealing connection and fastening of a valve body and an upper rotating shaft of a valve rod of an existing handle fluted disc butterfly valve are mostly realized by matching and installing a hole clamp spring and a hole clamp spring matched shaft with a clamp spring or a U-shaped clamp plate, the connecting mode considers the butterfly plate and the valve body on the basis of matching of sizes of the upper rotating shaft and the butterfly plate of the valve rod, the matching relation is complex due to matching of the installation sizes of the upper rotating shaft and the valve body of the valve rod, the problem that the size design requirement of the upper rotating shaft of the valve rod is high is solved, and meanwhile, more parts are needed to be matched to; 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 structure that the integral encapsulation technology is done with the disk seat to butterfly valve body and valve seat promotes butterfly valve body, the wholeness, the steadiness of disk seat, nevertheless when the disk seat damages when appearing crackle etc. and need dismantle the change with the disk seat, need change the disk seat after burning off the rubber coating layer of disk seat and vulcanize the rubber coating again, not only the disk seat is changed the difficulty, and the way of burning off the disk seat rubber coating layer still can the polluted environment. How to conveniently realize the axial sealing connection and fastening of the handle fluted disc butterfly valve body and the rotating shaft on the valve rod, improve the axial sealing performance of the rotating shaft on the valve body and the valve rod, and conveniently realize the disassembly and replacement of 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.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: a handle fluted disc butterfly valve is provided. The axial sealing connection and fastening of the handle fluted disc butterfly valve body and the rotating shaft on the valve rod can be conveniently realized by using the butterfly valve, the axial sealing performance of the rotating shaft on the valve body and the valve rod is improved, and the rotating shaft on the valve rod can be conveniently detached and replaced; 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 technical scheme for solving the technical problems is as follows: the utility model provides a handle fluted disc butterfly valve, pivot under the valve rod on valve body, disk seat, butterfly plate, handle, fluted disc, top flange, the valve rod, the valve body has shaft hole, lower shaft hole, characterized by: the valve also comprises a rotation limiting device of the rotating shaft on the valve rod relative to the valve body; the rotation limiting device of the upper rotating shaft of the valve rod relative to the valve body is an elastic cylindrical pin, a blind hole which is in interference fit with the elastic cylindrical pin is arranged on a neck of the valve body, a semicircular annular groove is arranged on the rotating shaft on the valve rod at the position corresponding to the blind hole arranged on the neck of the valve body, the diameter of the semicircular annular groove arranged on the rotating shaft on the valve rod is consistent with that of the blind hole arranged on the neck of the valve body, when the upper rotating shaft of the valve rod is inserted into the upper shaft hole of the valve body, the blind hole arranged on the neck of the valve body coincides with the center of the cross section of the semicircular arc annular groove arranged on the upper rotating shaft of the valve rod, when the elastic cylindrical pin is pushed into the neck of the valve body from a blind hole formed in the neck of the valve body by using external force, the elastic cylindrical pin can be in rotating fit with the surface of the semicircular arc-shaped annular groove formed in the rotating shaft on the valve rod, and the elastic cylindrical pin is in rotating fit with the surface of the semicircular arc-shaped annular groove formed in the rotating shaft on the valve rod, so that the upper rotating shaft of the valve rod can be axially limited and fixed relative to the valve body; the valve also comprises a valve rod upper rotating shaft and a valve body sealing device; the sealing device for the upper rotating shaft of the valve rod and the valve body is a rubber sealing ring, the vertical section of the rubber sealing ring is in an ear shape, an annular pit matched with the rubber sealing ring with the ear shape in the vertical section is arranged on the inner wall of the upper end part of the upper shaft hole of the valve body, when the upper rotating shaft of the valve rod sleeved with the rubber sealing ring with the ear shape in the vertical section is inserted into the upper shaft hole of the valve body, the rubber sealing ring with the ear shape in the vertical section sleeved on the upper rotating shaft of the valve rod can be inserted into the annular pit arranged on the inner wall of the upper end part of the upper shaft hole of the valve body, when the top flange is fixed on the upper top surface of the neck of the valve body by using a bolt, the top flange can compress the rubber sealing ring with the ear shape in the vertical section sleeved on;

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 invention has the beneficial effects that: the invention is provided with the rotation limiting device of the rotating shaft on the valve rod relative to the valve body; the rotating shaft on the valve rod is an elastic cylindrical pin relative to the rotating limiting device of the valve body, a blind hole which is in interference fit with the elastic cylindrical pin is arranged on a neck of the valve body, a semi-circular ring groove is arranged at the position of the rotating shaft on the valve rod, which corresponds to the blind hole arranged on the neck of the valve body, the diameter of the semi-circular ring groove arranged on the rotating shaft on the valve rod is consistent with the diameter of the blind hole arranged on the neck of the valve body, when the upper rotating shaft of the valve rod is inserted into the upper shaft hole of the valve body, the blind hole arranged on the neck of the valve body coincides with the center of the vertical section of the semicircular annular groove arranged on the upper rotating shaft of the valve rod, when the elastic cylindrical pin is pushed into the neck of the valve body from a blind hole formed in the neck of the valve body by using external force, the elastic cylindrical pin can be in rotating fit with the surface of the semicircular arc-shaped annular groove formed in the rotating shaft on the valve rod, and the elastic cylindrical pin is in rotating fit with the surface of the semicircular arc-shaped annular groove formed in the rotating shaft on the valve rod, so that the upper rotating shaft of the valve rod can be axially limited and fixed relative to the valve body; a sealing device of the valve rod upper rotating shaft and the valve body is also arranged; the rotating shaft and the valve body sealing device on the valve rod are rubber sealing rings, and the vertical sections of the rubber sealing rings are ear-shaped. The elastic cylindrical pin is in running fit with the surface of the semicircular arc annular groove arranged on the rotating shaft on the valve rod, so that the limit connection tightness and the axial stability of the elastic cylindrical pin and the rotating shaft on the valve rod are realized; the axial sealing connection and fastening of the handle fluted disc butterfly valve body and the rotating shaft on the valve rod are conveniently realized; when the rotating shaft on the valve rod needs to be replaced, the elastic cylindrical pin can be conveniently detached and then the rotating shaft on the valve rod can be taken out. The disassembly and replacement of the rotating shaft on the valve rod are conveniently realized; when the top flange is fixed on the neck of the valve body by using bolts, the top flange can compress the rubber sealing ring with the ear-shaped vertical section sleeved on the rotating shaft on the valve rod, so that the sealing of the rotating shaft on the valve rod and the valve body by the rubber sealing ring with the ear-shaped vertical section is realized; meanwhile, as the neck of the valve body is provided with the blind hole which is in interference fit with the elastic cylindrical pin, the leakage risk of the valve body and the rotary shaft on the valve rod is prevented; the axial sealing performance of the valve body and the rotating shaft on the valve rod is improved. The elastic cylindrical pin replaces structures such as a snap spring, a flat gasket, a valve body ring groove and the like, so that the handle fluted disc butterfly valve eliminates a complex machining procedure, and the number of accessories is reduced. Compared with a clamp spring matching structure of a traditional handle fluted disc butterfly valve, the clamp spring matching structure is simpler and is convenient to process. The butterfly valve effectively prevents the rotary shaft on the valve rod from dropping out of the shaft hole on the valve body.

The valve body and the valve seat longitudinal jacking device is 2 flat-end fastening screws, the 2 flat-end fastening screws are respectively arranged in screw holes respectively arranged on the transverse central axes of the left side wall and the right side wall of the valve body, the 2 flat-end fastening screws respectively arranged in the screw holes on the transverse central axes 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. According to the handle fluted disc butterfly valve, 2 flat-end fastening screws exert longitudinal axial force on the valve seat in the wall screw holes on the left side and the right side of the valve body, so that the longitudinal fastening effect on the valve seat is achieved, when the damaged valve seat is disassembled and replaced, the 2 flat-end fastening screws are rotated reversely, and the disassembly and replacement of the damaged handle fluted disc butterfly valve seat are conveniently realized; the handle fluted disc butterfly valve has the characteristics of integration and stability of the integrated rubber coated valve body and the valve seat of the traditional handle fluted disc butterfly valve, and also has the characteristics of convenience and detachability; the 2 flat-end fastening screws of the handle fluted disc butterfly valve replace the integral rubber coating of the traditional handle fluted disc butterfly valve, the complex processing technology of the traditional handle fluted disc butterfly valve is cancelled, the structure is simple, the damage to the burning rubber coating layer of the valve seat and the vulcanization rubber coating are not needed any more, the production cost of the handle fluted disc butterfly valve is reduced, and the pollution to the environment is eliminated.

Drawings

The invention is further explained below with reference to the figures and examples;

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

in the drawings: 1. the valve comprises a valve body, 2 valve seats, 3 butterfly plates, 4 handles, 5 fluted discs, 6 top flanges, 7 valve rod upper rotating shafts, 8 valve rod lower rotating shafts, 9 elastic cylindrical pins, 71 semi-circular arc annular grooves, 10 vertical cross sections of lug-shaped rubber sealing rings and 11 flat-end fastening screws.

Detailed Description

The present invention is described in further detail below with reference to specific examples.