CN215214794U

CN215214794U - Flange type butt-clamping hard sealing butterfly valve

Info

Publication number: CN215214794U
Application number: CN202120777938.XU
Authority: CN
Inventors: 金泽润
Original assignee: Zhejiang Zhongyuan Valve Co ltd
Current assignee: Zhejiang Zhongyuan Valve Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-12-17
Anticipated expiration: 2031-04-16

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a flange type opposite clamping hard sealing butterfly valve, which comprises a valve seat, wherein an upper valve body and a lower valve body are respectively welded and fixed at the top and the bottom ends of the valve seat, two second flange plates with the same specification are arranged above the upper valve body, the first flange plates at the two ends of the valve seat are respectively arranged on two conveying pipelines, when in use, a worm at one end of a driving rotating handle is rotated by a rotating handle of a worker, because the worm is meshed with the valve rod, when the worm rotates, the valve rod can synchronously rotate with the worm, the valve rod is arranged between the upper valve body and the lower valve body, the upper valve body and the lower valve body limit the valve rod, the valve rod only can rotate in the upper valve body and the lower valve body, when the valve rod rotates, the circular butterfly plate can be driven to rotate, when the circular butterfly plate rotates to 90 degrees, the valve is in a fully-opened state, and the medium can conveniently circulate between the two pipelines, when the medium is cut off, a worker needs to rotate the rotating handle in the opposite direction, so that the influence on the opening and closing of the valve when the medium impact force is too large can be avoided.

Description

Flange type butt-clamping hard sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a flange formula is to pressing from both sides hard seal butterfly valve.

Background

A butterfly valve, also called a flap 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 closing (a valve clack or a butterfly plate) into a disc and rotating around a valve shaft. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The existing butterfly valve is complex in structure, high in manufacturing cost and poor in sealing performance, the valve clack or the butterfly plate in the valve seat is easy to change the rotating angle by medium impact force, the valve is closed, the valve clack or the butterfly plate needs to be rotated for many times, and the butterfly valve is troublesome. In view of this, we propose a flange type double-clamped hard seal butterfly valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flange formula is to pressing from both sides sealed butterfly valve firmly to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a flange type hard-sealing butterfly valve comprises a valve seat, wherein an upper valve body and a lower valve body are respectively welded and fixed at two ends of the top and the bottom of the valve seat, two second flange plates with the same specification are arranged above the upper valve body, one of the second flange plates is welded and fixed with the upper surface of the upper valve body, the other second flange plate is fixed with a second sealing gasket on the upper surface, a top box is fixed at the top end of the second sealing gasket, an installation box is tightly welded on the outer surface of the top box, a valve rod is arranged in the top box, the top box is communicated with the inside of the installation box, a worm meshed with the valve rod is installed in the installation box, the valve rod is arranged between the upper valve body and the lower valve body, the valve rod is in threaded connection with the upper valve body and the lower valve body, and a circular butterfly plate is fixed on the valve rod, the outer surface welded fastening of circular butterfly plate has the metal sealing washer, the rear end face of circular butterfly plate has two retainer plates that are ring circular structure closely to weld, the surface of valve rod with the internal surface welded fastening of retainer plate.

Preferably, first ring flanges are fixed at two ends of the valve seat, and a plurality of screw holes which are arranged in an annular and equidistant mode are formed in each of the first ring flanges.

Preferably, a first gasket is fixed inside the first flange.

Preferably, the diameter of the metal sealing ring is equal to the diameter of the valve seat.

Preferably, the two second flange plates are in threaded connection through a plurality of screws which are annularly arranged at equal intervals, and each screw is in threaded connection with two nuts.

Preferably, one end of the worm penetrates through the wall of the mounting box and is provided with a rotating handle.

Preferably, the valve seat, the upper valve body and the lower valve body are coated with anticorrosive coatings on the inner and outer surfaces.

Compared with the prior art, the beneficial effects of the utility model are that: the flange type opposite clamping hard sealing butterfly valve is characterized in that first flange plates at two ends of a valve seat are respectively arranged on two conveying pipelines, when the flange type opposite clamping hard sealing butterfly valve is used, a worker rotates a rotating handle to drive a worm at one end of the rotating handle to rotate, the worm and a valve rod are meshed with each other, when the worm rotates, the valve rod can synchronously rotate with the worm, the valve rod is arranged between an upper valve body and a lower valve body, the upper valve body and the lower valve body limit the valve rod, the valve rod only can rotate in the upper valve body and the lower valve body, the valve rod can drive a circular butterfly plate to rotate when rotating, when the circular butterfly plate rotates to 90 degrees, the valve is in a fully-opened state, a medium can conveniently circulate between the two pipelines, when the medium is cut off, the rotating handle needs to be rotated in the opposite direction by the worker, the influence on the opening and closing of the valve when the medium impact force is too large can be avoided, the problems that the structure of the existing butterfly valve is complex, the manufacturing cost is high, the sealing performance is poor, and the valve clack or the butterfly plate in the valve seat is easily changed in rotation angle by the medium impact force are solved, the valve is closed, the valve clack or the butterfly plate needs to be rotated for many times, and the problem of trouble is solved.

Drawings

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

fig. 2 is a front view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a schematic structural view of the circular butterfly plate of the present invention.

In the figure: 1. a valve seat; 2. a first flange plate; 21. a screw hole; 3. an upper valve body; 4. a lower valve body; 5. a first gasket; 6. a top box; 61. a valve stem; 62. a circular butterfly plate; 621. a metal seal ring; 622. a stationary ring; 7. installing a box; 71. turning a handle; 72. a worm; 8. a second gasket; 9. a second flange plate; 91. a screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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 is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element 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" and "first" 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" or "second" 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 specifically limited otherwise.

Referring to fig. 1-4, the present invention provides a technical solution:

a flange type opposite clamping hard sealing butterfly valve comprises a valve seat 1, wherein an upper valve body 3 and a lower valve body 4 are respectively welded and fixed at the top and bottom ends of the valve seat 1, two second flange plates 9 with the same specification are arranged above the upper valve body 3, the lower bottom surface of one second flange plate 9 is welded and fixed with the upper surface of the upper valve body 3, a second sealing gasket 8 is fixed on the upper surface of the other second flange plate 9, a top box 6 is fixed at the top end of the second sealing gasket 8, a mounting box 7 is tightly welded on the outer surface of the top box 6, a valve rod 61 is arranged inside the top box 6, the top box 6 is communicated with the inside of the mounting box 7, a worm 72 which is mutually meshed with the valve rod 61 is arranged in the mounting box 7, the valve rod 61 is arranged between the upper valve body 3 and the lower valve body 4, the valve rod 61 is in threaded connection with the upper valve body 3 and the lower valve body 4, a circular butterfly plate 62 is fixed on the valve rod 61, a metal sealing ring 621 is welded and fixed on the outer surface of the circular butterfly plate 62, two fixing rings 622 in a circular ring structure are tightly welded to the rear end face of the circular butterfly plate 62, and the outer surface of the valve rod 61 is welded and fixed to the inner surface of the fixing rings 622.

In this embodiment, the both ends of disk seat 1 all are fixed with first ring flange 2, and all set up the screw 21 that a plurality of is the equidistant range of annular on two first ring flanges 2, be convenient for install the device between two pipelines, circular butterfly plate 62 is installed in disk seat 1, circular butterfly plate 62 can be rotatory round the axis, rotation angle is between 0-90, when rotatory 90, the valve then is the state of opening entirely, the medium of being convenient for circulates between two pipelines, the convenience is carried the medium.

Furthermore, a first sealing gasket 5 is fixed inside the first flange 2 to prevent the medium from leaking from a gap between the first flange 2 and the facing surface of the pipeline.

In addition, the diameter of the metal sealing ring 621 is equal to the diameter of the valve seat 1, when the circular butterfly plate 62 rotates in the valve seat 1, the metal sealing ring 621 can rotate synchronously with the circular butterfly plate 62, so that the valve can be opened and closed conveniently, when the valve is closed, the outer surface of the metal sealing ring 621 is tightly attached to the inner surface of the valve seat 1, the sealing performance of the metal sealing ring 621 is good, and the medium can be prevented from leaking along the gap between the valve seat 1 and the metal sealing ring 621.

Specifically, two second ring flanges 9 are the screw rod 91 threaded connection of annular equidistant range through a plurality of, and equal threaded connection has two nuts on every screw rod 91, is convenient for install two second ring flanges 9, and the nut can prevent that screw rod 91 from droing from two second ring flanges 9.

In this embodiment, the one end of worm 72 runs through the tank wall of installation case 7 and installs and change handle 71, and the staff of being convenient for drives worm 72 and rotates, and then drives valve rod 61 and rotate, and when valve rod 61 rotated, circular butterfly plate 62 on the valve rod 61 can be rotatory around the axis, realizes opening and closing of valve.

It is worth noting that the inner and outer surfaces of the valve seat 1, the upper valve body 3 and the lower valve body 4 are coated with anticorrosive coatings, so that the valve seat 1, the upper valve body 3 and the lower valve body 4 can be protected from being corroded by harmful chemical substances in media, and the service lives of the valve seat 1, the upper valve body 3 and the lower valve body 4 can be prolonged conveniently.

When the flange type opposite clamping hard sealing butterfly valve is used, the first flange plates 2 at two ends of the valve seat 1 are respectively arranged on two conveying pipelines, when the flange type opposite clamping hard sealing butterfly valve is used, a worker rotates the rotating handle 71 to drive the worm 72 at one end of the rotating handle 71 to rotate, the worm 72 is meshed with the valve rod 61, the valve rod 61 can synchronously rotate with the worm 72 when the worm 72 rotates, the valve rod 61 is arranged between the upper valve body 3 and the lower valve body 4, the upper valve body 3 and the lower valve body 4 limit the valve rod 61, so that the valve rod 61 can only rotate in the upper valve body 3 and the lower valve body 4, the valve rod 61 can drive the circular butterfly plate 62 to rotate when rotating, when the circular butterfly plate 62 rotates to 90 degrees, the valve is in a fully-opened state, the medium can conveniently circulate between the two pipelines, when the medium is cut off, the worker needs to reversely rotate the rotating handle 71, the influence on the opening and closing of the valve when the medium impact force is too large can be avoided, and the current butterfly valve structure is solved, the manufacturing cost is high, the sealing performance is poor, the valve clack or the butterfly plate in the valve seat is easy to change the rotating angle by medium impact force, the valve is closed, the valve clack or the butterfly plate needs to be rotated for many times, and the problem is troublesome.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a flange formula is to pressing from both sides hard seal butterfly valve which characterized in that: comprises a valve seat (1), wherein an upper valve body (3) and a lower valve body (4) are respectively welded and fixed at two ends of the top and the bottom of the valve seat (1), a second flange (9) with the same specification is arranged above the upper valve body (3), one of the two flange is welded and fixed on the lower bottom surface of the second flange (9) and the upper surface of the upper valve body (3), the other flange is fixed on the upper surface of the second flange (9) and is provided with a second sealing gasket (8), the top end of the second sealing gasket (8) is fixed with a top box (6), an installation box (7) is tightly welded on the outer surface of the top box (6), a valve rod (61) is arranged inside the top box (6), the top box (6) is communicated with the inside of the installation box (7), a worm (72) meshed with the valve rod (61) is installed inside the installation box (7), the valve rod (61) is arranged between the upper valve body (3) and the lower valve body (4), valve rod (61) with go up valve body (3) with lower valve body (4) threaded connection, be fixed with circular butterfly plate (62) on valve rod (61), the surface welded fastening of circular butterfly plate (62) has metal seal ring (621), the rear end face of circular butterfly plate (62) closely welds two retainer plates (622) that are the ring annular structure, the surface of valve rod (61) with the internal surface welded fastening of retainer plate (622).

2. The flange type double-clamp hard seal butterfly valve according to claim 1, wherein: the two ends of the valve seat (1) are fixed with first flange plates (2), and the first flange plates (2) are provided with a plurality of screw holes (21) which are arranged in an annular and equidistant mode.

3. The flange type double-clamp hard seal butterfly valve according to claim 2, wherein: and a first sealing gasket (5) is fixed inside the first flange plate (2).

4. The flange type double-clamp hard seal butterfly valve according to claim 1, wherein: the diameter of the metal sealing ring (621) is equal to that of the valve seat (1).

5. The flange type double-clamp hard seal butterfly valve according to claim 1, wherein: two the second ring flange (9) are in threaded connection through a plurality of screw rods (91) which are arranged in an annular and equidistant mode, and each screw rod (91) is connected with two nuts in a threaded mode.

6. The flange type double-clamp hard seal butterfly valve according to claim 1, wherein: one end of the worm (72) penetrates through the wall of the mounting box (7) and is provided with a rotating handle (71).

7. The flange type double-clamp hard seal butterfly valve according to claim 1, wherein: the valve seat (1), the upper valve body (3) and the lower valve body (4) are coated with anticorrosive coatings on the inner and outer surfaces.