CN215567989U

CN215567989U - Novel ultra-low temperature butterfly valve

Info

Publication number: CN215567989U
Application number: CN202121244629.2U
Authority: CN
Inventors: 董相良; 缪震华; 叶国梁
Original assignee: Naisen Valve Industry Co ltd
Current assignee: Naisen Valve Industry Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-01-18
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a novel ultra-low temperature butterfly valve, and particularly relates to the technical field of mechanical engineering valves, which comprises a valve body, a valve cover, a valve plate and a hand wheel, wherein the upper side of the valve body is fixedly connected with a first connecting pipe, the lower side of the valve body is fixedly connected with a second connecting pipe, the valve plate is arranged in the valve body, the upper surface of the first connecting pipe is fixedly connected with a connecting seat, the valve cover comprises an upper valve cover and a lower valve cover, the connecting seat is fixedly arranged on the bottom surface of the lower valve cover, a transmission mechanism is arranged on the inner side of the lower valve cover, the upper surface of the lower valve cover is provided with the upper valve cover, a connecting hole is formed in the side surface of the valve cover, a connecting rod is arranged in the connecting hole, and the hand wheel is fixedly connected to one side of the connecting rod. The utility model is provided with a transmission mechanism, the opening and closing functions of the utility model can be realized by rotating the hand wheel, and the sealing property of the utility model is improved to a certain extent by arranging the pressing ring and the valve cover sealing ring, so that the service life of the utility model is prolonged.

Description

Novel ultra-low temperature butterfly valve

Technical Field

The utility model relates to the technical field of mechanical engineering valves, in particular to a novel ultralow-temperature butterfly valve.

Background

The butterfly valve is also called as flap valve, it is a simple structure regulating valve, it can be used for controlling the flow of various fluids of air, water, steam, various corrosive media, slurry, oil product, liquid metal and radioactive media, etc., and mainly plays the role of cutting off and throttling on the pipeline.

The sealing ring materials used by the existing butterfly valve used in the low-temperature environment are multi-layer sealing rings made of stainless steel and flexible graphite, the sealing rings are not resistant to medium scouring, after the butterfly valve is used for a long time, the sealing rings are easy to damage, so that the sealing performance of the valve is influenced, the existing ultralow-temperature butterfly valve is opened and closed by adopting a disc type opening and closing piece which rotates for about 90 degrees in a reciprocating manner, and a medium easily permeates into a valve cover in the rotation process, so that the normal use of the butterfly valve is influenced. In view of this, it is necessary to provide a novel ultra-low temperature butterfly valve which is convenient to install, environment-friendly and energy-saving.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defects in the prior art, embodiments of the present invention provide a novel ultra-low temperature butterfly valve, so as to solve the problems that the existing ultra-low temperature butterfly valve proposed in the above background art has a poor sealing effect, and media are easy to permeate during opening and closing.

In order to achieve the above purpose, the utility model provides the following technical scheme: the utility model provides a novel ultra-low temperature butterfly valve, includes valve body, valve gap, valve plate and hand wheel, the upside fixedly connected with connecting pipe of valve body I, the downside fixedly connected with connecting pipe two of valve body simultaneously, inside the valve body was located to the valve plate, the last fixed surface of connecting pipe I is connected with the connecting seat, the valve gap includes valve gap and lower valve gap, connecting seat fixed mounting is in the bottom surface of valve gap down, the inboard of valve gap is equipped with drive mechanism down, the upper surface of valve gap is equipped with the valve gap down, the four corners department of valve gap and lower valve gap all sets up threaded hole, threaded hole is equipped with the joint bolt, the connecting hole has been seted up to the side of valve gap, be equipped with the connecting rod in the connecting hole, one side fixedly connected with hand wheel of connecting rod.

In a preferred embodiment, the transmission mechanism comprises a worm and a transmission gear.

In a preferred embodiment, the worm is sleeved on the connecting rod, the transmission gear is movably connected with the inner bottom surface of the lower valve cover, and the worm is meshed with the transmission gear.

In a preferred embodiment, the upper top surface of the valve plate is provided with a square groove, the lower top surface of the valve plate is provided with a circular groove, and the connecting pipe II is internally provided with a circular plug which extends into the circular groove.

In a preferred embodiment, an elongated valve rod is arranged inside the first connecting pipe, the upper end surface of the elongated valve rod is fixedly connected with the lower end surface of the transmission gear, and the lower side of the elongated valve rod is cylindrical.

In a preferred embodiment, the upper end surface of the upper valve cover is provided with a through hole, and the upper side of the upper valve cover is provided with a valve cover shaft pin which passes through the through hole and is fixedly connected with the transmission gear.

In a preferred embodiment, an annular groove is formed in the upper surface of the lower valve cover, a pressing ring is arranged in the annular groove, and a valve cover sealing ring is arranged at the joint of the upper valve cover and the lower valve cover.

In a preferred embodiment, the valve cover sealing ring is divided into a sealing layer and a filling layer, the sealing layer is made of aramid fiber, the filling layer is made of glass fiber reinforced plastics, and the outer sides of the valve body, the valve cover and the valve plate are coated with protective paint.

Compared with the prior art, the utility model has the beneficial effects that:

through arranging the transmission mechanism in the valve cover, when the utility model is used, the hand wheel is rotated, the hand wheel drives the connecting rod fixedly connected with the hand wheel to rotate, the connecting rod drives the worm to rotate, the worm drives the transmission gear meshed with the worm to rotate, the transmission gear drives the extension valve rod to rotate, and the extension valve rod drives the valve plate to rotate through the square groove, so that the opening and closing functions of the utility model are realized; by arranging the pressing ring and the valve cover sealing ring, the sealing performance of the utility model is improved to a certain extent, so that the utility model has good strength and rigidity in a low-temperature environment, is not easy to be damaged by medium erosion, and prolongs the service life of the utility model.

Drawings

For a clearer explanation of the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

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

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

FIG. 3 is a right side view of the present invention;

FIG. 4 is a front view of the present invention;

FIG. 5 is a top view of the present invention;

FIG. 6 is a partial schematic view of the present invention;

FIG. 7 is a top view of a portion of the structure of the present invention;

FIG. 8 is a top view of the valve plate of the present invention;

FIG. 9 is a bottom view of the valve plate of the present invention;

FIG. 10 is a schematic view of the construction of a transmission gear according to the present invention;

FIG. 11 is a schematic illustration of the elongated valve stem of the present invention;

fig. 12 is a schematic structural view of the bonnet seal of the present invention.

Description of reference numerals:

1. a valve body; 2. a valve cover; 201. an upper valve cover; 202. a lower valve cover; 3. a valve plate; 4. a hand wheel; 5. a first connecting pipe; 6. a second connecting pipe; 7. a connecting seat; 8. a transmission mechanism; 801. a worm; 802. a transmission gear; 9. clamping a bolt; 10. a connecting rod; 11. lengthening the valve rod; 12. a square groove; 13. a circular groove; 14. a circular plug; 15. pressing a ring; 16. a valve cover sealing ring; 1601. a sealing layer; 1602. a filling layer; 17. valve cover axle pin.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-11 of the specification, the novel ultra-low temperature butterfly valve of the embodiment comprises a valve body 1, a valve cover 2, a valve plate 3 and a hand wheel 4, wherein a first connecting pipe 5 is fixedly connected to the upper side of the valve body 1, a second connecting pipe 6 is fixedly connected to the lower side of the valve body 1, the valve plate 3 is arranged inside the valve body 1, the opening and closing of the novel ultra-low temperature butterfly valve are determined by the rotation of the valve plate 3, a connecting seat 7 is fixedly connected to the upper surface of the first connecting pipe 5, the valve cover 2 comprises an upper valve cover 201 and a lower valve cover 202, the connecting seat 7 is fixedly arranged on the bottom surface of the lower valve cover 202, a transmission mechanism 8 is arranged on the inner side of the lower valve cover 202, the upper valve cover 201 is arranged on the upper surface of the lower valve cover 202, threaded holes are formed in four corners of the upper valve cover 201 and the lower valve cover 202, clamping bolts 9 are arranged in the threaded holes, the upper valve cover 201 and the lower valve cover 202 are fixedly connected together by the clamping bolts 9, the connecting hole has been seted up to the side of valve gap 2, be equipped with connecting rod 10 in the connecting hole, one side fixedly connected with hand wheel 4 of connecting rod 10, this utility model realizes opening and closing of this utility model through rotating the rotation that hand wheel 4 realized valve plate 3 during the use.

The implementation scenario is specifically as follows: this utility model discloses during the use, install the water pipe in the both sides of valve body 1, rotate hand wheel 4, will drive mechanism 8 after hand wheel 4 is rotatory and rotate, and drive mechanism 8 drives extension valve rod 11 and rotates, and extension valve rod 11 drives valve plate 3 and rotates to open this utility model, the rivers will follow the inside through of valve body 1.

Referring to the specification, fig. 6, 7 and 10, the transmission mechanism 8 of the novel ultra-low temperature butterfly valve of the embodiment comprises a worm 801 and a transmission gear 802.

The worm 801 is sleeved on the connecting rod 10, the transmission gear 802 is movably connected with the inner bottom surface of the lower valve cover 202, and the worm 801 is meshed with the transmission gear 802.

The implementation scenario is specifically as follows: the utility model discloses a during the use, it is rotatory to drive connecting rod 10 through rotating hand wheel 4 to it is rotatory to drive the worm 801 on the connecting rod 10, and worm 801 drives the drive gear 802 rotation of meshing with it, and drive gear 802 drives extension valve rod 11 and rotates.

Referring to the accompanying

drawings

1, 6, 8, 9 and 11 in the specification, in the novel ultra-low temperature butterfly valve of this embodiment, the upper top surface of the valve plate 3 is provided with a square groove 12, the lower top surface of the valve plate 3 is provided with a circular groove 13, a circular plug 14 is arranged in the second connecting pipe 6, and the circular plug 14 extends into the circular groove 13.

The connecting pipe I5 is internally provided with a lengthened valve rod 11, the upper end face of the lengthened valve rod 11 is fixedly connected with the lower end face of the transmission gear 802, and the lower side of the lengthened valve rod 11 is cylindrical.

The implementation scenario is specifically as follows: the downside of extension valve rod 11 injects square inslot 12, drives extension valve rod 11 when drive gear 802 and rotates the back, and extension valve rod 11 can drive valve plate 3 through square inslot 12 and rotate, realizes this utility model's opening and closed function.

Referring to the attached

drawings

1, 6, 7 and 12 in the specification, the novel ultra-low temperature butterfly valve of this embodiment, the ring channel has been seted up to the upper surface of lower valve gap 202, is equipped with clamping ring 15 in the ring channel simultaneously, when rotating hand wheel 4 and opening or close this utility model, the medium can get into in valve gap 2, leads to the unable normal switch of valve plate 3, sets up the leakproofness that clamping ring 15 can strengthen in the valve gap 2 better, guarantees the normal closing of valve plate 3, the junction of upper valve gap 201 and lower valve gap 202 is equipped with valve gap sealing washer 16.

Valve gap sealing washer 16 divide into sealing layer 1601 and filling layer 1602, sealing layer 1601 adopts aramid fiber to make, filling layer 1602 adopts glass fiber reinforced plastics to make, the outside of valve body 1, valve gap 2, valve plate 3 all scribbles the protective paint, the protective paint adopts polytetrafluoroethylene for making, has characteristics such as corrosion resistance is strong, stable performance, difficult ageing, coefficient of friction is low, easily takes shape, dimensional stability.

The implementation scenario is specifically as follows: the sealing layer 1601 made of aramid fiber has a good sealing effect, so that the valve cover sealing ring 16 has good strength in a low-temperature environment, and the filling layer 1602 made of glass fiber reinforced plastic enables the valve cover sealing ring 16 to have super-strong tensile strength and rigidity, is not easily damaged by medium washing, and prolongs the service life of the valve cover sealing ring.

The upper end surface of the upper valve cover 201 is provided with a through hole, the upper side of the upper valve cover 201 is provided with a valve cover shaft pin 17, the valve cover shaft pin 17 penetrates through the through hole to be fixedly connected with the transmission gear 802, and the pressure in the valve cover 2 can be released by pulling out the valve cover shaft pin 17.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a novel ultra-low temperature butterfly valve, includes valve body (1), valve gap (2), valve plate (3) and hand wheel (4), its characterized in that: the upper side of the valve body (1) is fixedly connected with a first connecting pipe (5), the lower side of the valve body (1) is fixedly connected with a second connecting pipe (6), the valve plate (3) is arranged inside the valve body (1), the upper surface of the first connecting pipe (5) is fixedly connected with a connecting seat (7), the valve cover (2) comprises an upper valve cover (201) and a lower valve cover (202), the connecting seat (7) is fixedly arranged on the bottom surface of the lower valve cover (202), the inner side of the lower valve cover (202) is provided with a transmission mechanism (8), the upper surface of the lower valve cover (202) is provided with an upper valve cover (201), the four corners of the upper valve cover (201) and the lower valve cover (202) are both provided with threaded holes, a clamping bolt (9) is arranged in the threaded hole, a connecting hole is arranged on the side surface of the valve cover (2), a connecting rod (10) is arranged in the connecting hole, and a hand wheel (4) is fixedly connected to one side of the connecting rod (10).

2. A novel ultra-low temperature butterfly valve according to claim 1, characterized in that: the transmission mechanism (8) comprises a worm (801) and a transmission gear (802).

3. A novel ultra-low temperature butterfly valve according to claim 2, characterized in that: the worm (801) is sleeved on the connecting rod (10), the transmission gear (802) is movably connected with the inner bottom surface of the lower valve cover (202), and the worm (801) is meshed with the transmission gear (802).

4. A novel ultra-low temperature butterfly valve according to claim 1, characterized in that: the last top surface of valve plate (3) is equipped with square groove (12), the lower top surface of valve plate (3) is equipped with circular recess (13), be equipped with circular stopper (14) in connecting pipe two (6), circular stopper (14) stretch into to inside circular recess (13) simultaneously.

5. A novel ultra-low temperature butterfly valve according to claim 2, characterized in that: the connecting pipe (5) is internally provided with a lengthened valve rod (11), the upper end face of the lengthened valve rod (11) is fixedly connected with the lower end face of the transmission gear (802), and the lower side of the lengthened valve rod (11) is cylindrical.

6. A novel ultra-low temperature butterfly valve according to claim 2, characterized in that: the upper end face of the upper valve cover (201) is provided with a through hole, a valve cover shaft pin (17) is arranged on the upper side of the upper valve cover (201), and the valve cover shaft pin (17) penetrates through the through hole to be fixedly connected with the transmission gear (802).

7. A novel ultra-low temperature butterfly valve according to claim 1, characterized in that: an annular groove is formed in the upper surface of the lower valve cover (202), a pressing ring (15) is arranged in the annular groove, and a valve cover sealing ring (16) is arranged at the joint of the upper valve cover (201) and the lower valve cover (202).

8. A novel ultra-low temperature butterfly valve according to claim 7, characterized in that: valve gap sealing washer (16) divide into sealing layer (1601) and filling layer (1602), sealing layer (1601) adopt aramid fiber to make, filling layer (1602) adopt glass fiber reinforced plastics to make, the outside of valve body (1), valve gap (2), valve plate (3) all scribbles the protective paint.