CN218913766U - Triple offset butterfly valve - Google Patents

Abstract

The application discloses three eccentric butterfly valve relates to valve machinery, and its characterized in that includes: a valve body; the valve rod is rotatably arranged in the valve body in a penetrating way, the inner end face of the valve rod is fixedly connected with the butterfly plate, and the outer end face of the valve body is movably connected with the driving device; the butterfly plate, the butterfly plate sets up in the cavity of valve body, the butterfly plate still includes: the eccentric positioning step is arranged on the butterfly plate and is an eccentric circle; the sealing ring is arranged on the eccentric positioning step; the sealing ring pressing ring is arranged on the sealing ring and fixed on the eccentric positioning step by screws. The three-eccentric butterfly valve assembly repair, overhaul and repair method solves the problem that an existing three-eccentric butterfly valve assembly repair, overhaul and repair process is complex.

Description

Triple offset butterfly valve

Technical Field

The application relates to the field of valve machinery, in particular to a three-eccentric butterfly valve.

Background

Butterfly valves have been one of the fastest growing valve varieties in recent decades, and have been in very wide use, with the variety and number of varieties being continually expanding, and evolving toward high temperatures, high pressures, large calibers, high sealability, long life, excellent regulatory characteristics, and a valve multifunction. Butterfly valves can be divided into a central sealing butterfly valve, a single eccentric butterfly valve, a double eccentric butterfly valve, a triple eccentric butterfly valve and a four eccentric butterfly valve according to structures.

The triple offset butterfly valve means that the valve rod shaft center deviates from the disc center and the body center at the same time, and the valve seat rotation axis has a certain angle with the valve body channel axis. It is widely used in metallurgical, electric, petrochemical, water supply and drainage, municipal construction and other industrial pipelines for regulating flow and carrying flow. However, the existing three-eccentric butterfly valve sealing ring is generally difficult to repair after being damaged, or parts are detached respectively for repair when being detached, and the repair process is complex.

In view of this, we need a triple offset butterfly valve that facilitates assembly, repair, overhaul and repair procedures.

Disclosure of Invention

The purpose of this application is to solve current triple offset butterfly valve and is difficult to the repair, and repair process is complicated problem, for solving above-mentioned technical problem, provides a triple offset butterfly valve convenient to assembly repair, overhaul repair process are simple and convenient.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: a triple offset butterfly valve, comprising: a valve body; the valve rod is rotatably arranged in the valve body in a penetrating way, the inner end face of the valve rod is fixedly connected with the butterfly plate, and the outer end face of the valve body is movably connected with the driving device; the butterfly plate, the butterfly plate setting is in the cavity of valve body, and the butterfly plate still includes: the eccentric positioning step is arranged on the butterfly plate and is an eccentric circle; the sealing ring is arranged on the eccentric positioning step; the sealing ring pressing ring is arranged on the sealing ring and fixed on the eccentric positioning step by screws.

Further, according to the embodiment of the application, the valve body is abutted with the butterfly plate and is provided with a valve body valve seat, and the valve body valve seat is located on one side of the butterfly plate.

Further, according to the embodiment of the application, the sealing ring compression ring, the sealing ring, the butterfly plate and the valve rod are respectively provided with a sealing ring compression ring center line, a sealing ring center line, a butterfly plate middle line and a valve rod middle line.

Further, according to an embodiment of the application, the center line of the sealing ring compression ring and the middle line of the valve rod are located on two sides of the middle line of the butterfly plate.

Further, according to an embodiment of the present application, the height of the eccentric positioning step is not less than 1/2 of the thickness of the seal ring.

Further, according to an embodiment of the present application, the maximum outer contour of the sealing ring compression ring is smaller than the minimum outer contour of the valve seat of the valve body.

Further, according to the embodiment of the application, when the over-opening angle of the butterfly plate is 5-10 degrees, the butterfly plate does not interfere with the valve seat of the valve body.

Further, according to an embodiment of the present application, the driving device includes a worm gear case and a handle.

Further, according to an embodiment of the present application, the worm gear case is coupled to an outer end portion of the valve stem.

Further, according to an embodiment of the present application, the handle is coupled to the worm gear case by a worm linkage.

Compared with the prior art, this application is through setting up eccentric location step on the butterfly plate, install sealing washer and sealing washer clamping ring on eccentric location step, when the butterfly valve closed position, the sealing washer clamping ring can be dismantled and overhaul, when the butterfly valve is opened 85 to 95, under the condition of not dismantling the worm gear case, the sealing washer can be dismantled, the convenience overhauls and inspects the disk seat sealing condition, the problem that current three eccentric butterfly valve is difficult to repair, repair process complicacy has been solved, the realization is convenient for assemble and is repaired, overhaul the simple and convenient better effect of repair process.

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a triple offset butterfly valve according to the present application.

Fig. 2 is an enlarged schematic view of a portion a of a triple offset butterfly valve of the present application.

FIG. 3 is a schematic structural view of a butterfly plate of a triple offset butterfly valve of the present application.

Fig. 4 is a schematic structural view of a sealing ring of a triple offset butterfly valve.

Fig. 5 is a schematic structural view of a sealing ring of a tri-eccentric butterfly valve.

In the accompanying drawings

1. Valve body 2, valve rod 20, valve rod intermediate line

3. Butterfly plate 30, butterfly plate center line 31, eccentric positioning step

32. Seal ring 320, seal ring center line 33, seal ring compression ring

330. Sealing ring compression ring center line 4, valve body valve seat 5 and driving device

51. Worm gear case 52, handle 310, groove

Detailed Description

In order to make the objects, technical solutions, and advantages of the present utility model more apparent, the embodiments of the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present utility model, are intended to be illustrative only and not limiting of the embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

In the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Example 1:

as shown in fig. 1, this embodiment provides a triple offset butterfly valve, which is characterized by comprising: a valve body 1; the valve rod 2 is rotatably arranged in the valve body 1 in a penetrating way, the inner end surface of the valve rod 2 is fixedly connected with the butterfly plate 3, and the outer end surface of the valve body 1 is movably connected with the driving device 5; butterfly plate 3, butterfly plate 3 set up in the cavity of valve body 1, and butterfly plate 3 still includes: an eccentric positioning step 31, wherein the eccentric positioning step 31 is arranged on the butterfly plate 3, and the eccentric positioning step 31 is an eccentric circle; a seal ring 32, the seal ring 32 being mounted on the eccentric positioning step 31; the sealing ring pressing ring 33, the sealing ring pressing ring 33 is installed on the sealing ring 32, and the sealing ring pressing ring 33 is fixed on the eccentric positioning step 31 by using a screw.

As shown in fig. 2, the valve body 1 is provided with a valve body seat 4 in contact with the butterfly plate 3, and the valve body seat 4 is located on one side of the butterfly plate 3.

As shown in fig. 3-5, the seal ring compression ring 33, the seal ring 32, the butterfly plate 3 and the valve rod 2 are respectively provided with a seal ring compression ring center line 330, a seal ring center line 320, a butterfly plate middle line 30 and a valve rod middle line 20; the seal ring pressure ring centerline 330 and the valve stem centerline 20 are located on either side of the butterfly plate centerline 30. The sealing ring pressing ring 33, the sealing ring 32, the center and the central line of the butterfly plate 3 and the valve body 1 are in different positions, the sealing ring pressing ring 33 can be detached at the closing position of the application, no influence is exerted on other components, most of the center of the components in the existing butterfly valve is at the same point, the driving device 5 can be detached firstly only when the butterfly valve is detached, then the other components are detached one by one, the mounting process is opposite to the detaching process, the method is complex, and when the internal parts of the valve are adjusted before the worm gear case 51 is mounted in the mounting process, the valve rod is difficult to rotate, and the butterfly valve is particularly remarkable in the large-caliber valve mounting. But this application is in different positions with the central line of subassembly, when rotating, can not exert an influence each other to need not dismantle devices such as worm gear case 51 when dismantling, can overhaul, reach the assembly of being convenient for and repair, overhaul the simple and convenient better effect of repair process.

The height of the eccentric positioning step 31 is not less than 1/2 of the thickness of the sealing ring 32, if the height is too high, the worm gear case 51 needs to be detached firstly, then the sealing ring 32 and the sealing ring pressing ring 33 are detached, the operation is inconvenient to detach, the repairing process is complex, the height of the eccentric positioning step 31 is limited, multiple experiments prove that the height is suitable for the eccentric positioning step 31, and the sealing ring 32 and the sealing ring pressing ring 33 can be detached under the condition that the worm gear case 51 is not detached, so that the good effect of being convenient for assembly, repair and overhaul is achieved.

The surface of the eccentric positioning step 31 is set to be concave, the eccentric positioning step 31 further comprises a groove 310, the middle of the groove is low, the two sides of the groove 310 are high, the heights of the two sides of the groove are the same as those of the eccentric positioning step 31, the groove 310 enables the sealing ring 32 and the sealing ring pressing ring 33 to be attached to the eccentric positioning step 31 more, friction with other parts is avoided, the service life of the eccentric positioning step is prolonged, and in the assembling and repairing process, the sealing ring 32 and the sealing ring pressing ring 33 can be assembled and repaired only by taking out the sealing ring 32 and the sealing ring pressing ring 33 from the groove 310.

The maximum outline of the sealing ring pressing ring 33 is smaller than the minimum outline of the valve seat 4 of the valve body, the sealing ring pressing ring 33 can be conveniently detached under any opening degree, when the valve seat is closed, the sealing ring pressing ring 33 can be detached, overhaul and check the sealing condition of the valve seat conveniently, and when the butterfly valve is opened for 85 DEG to 95 DEG, the sealing ring 32 can be detached under the condition that the worm gear case 51 is not detached, so that the good effect of convenience in assembly, overhaul and repair processes can be achieved.

When the over-opening angle of the butterfly plate 3 is 5-10 degrees, the butterfly plate 3 and the valve body valve seat 4 do not interfere, so that collision and friction between the butterfly plate 3 and the valve body valve seat 4 can not occur under any opening degree, mutual abrasion of the butterfly plate 3 and the valve body valve seat 4 is avoided, and a gap between the butterfly plate 3 and the valve body valve seat 4 can be adjusted, so that the reliability of the valve is improved, the service life is prolonged, and the valve body valve seat 4 is not influenced in the disassembling process.

The driving device 5 comprises a worm gear case 51 and a handle 52, the worm gear case 51 is connected with the outer end part of the valve rod 2 in a linkage way, the handle 52 is connected with the worm gear case 51 through worm linkage, the butterfly valve can be opened and closed conveniently and rapidly by the worm gear case 51, labor is saved, fluid resistance is small, the operation is simple, the opening and closing moment is small, and the butterfly plates on two sides of the rotating shaft are basically equal under the action of a medium, so that the directions of the generated torque are opposite, and therefore, the starting and the closing are more labor-saving and convenient.

While the foregoing has been described in terms of illustrative embodiments thereof, so that those skilled in the art may appreciate the present application, it is not intended to be limited to the precise embodiments so that others skilled in the art may readily utilize the present application to its various modifications and variations which are within the spirit and scope of the present application as defined and determined by the appended claims.

Claims (10)

1. A triple offset butterfly valve, comprising:

a valve body;

the valve rod is rotatably arranged in the valve body in a penetrating way, the inner end face of the valve rod is fixedly connected with the butterfly plate, and the outer end face of the valve body is movably connected with the driving device;

the butterfly plate, the butterfly plate sets up in the cavity of valve body, the butterfly plate still includes:

the eccentric positioning step is arranged on the butterfly plate and is an eccentric circle;

the sealing ring is arranged on the eccentric positioning step;

the sealing ring pressing ring is arranged on the sealing ring and fixed on the eccentric positioning step by screws.

2. The triple offset butterfly valve of claim 1, wherein the valve body is provided with a valve body valve seat in abutment with the butterfly plate, the valve body valve seat being located on one side of the butterfly plate.

3. The triple offset butterfly valve of claim 1, wherein the seal ring pressure ring, the seal ring, the butterfly plate and the valve stem are provided with a seal ring pressure ring centerline, a seal ring centerline, a butterfly plate centerline and a valve stem centerline, respectively.

4. A triple offset butterfly valve according to claim 3 wherein the seal ring pressure ring centerline and the valve stem centerline are located on either side of the butterfly plate centerline.

5. The triple offset butterfly valve of claim 1 wherein the height of the offset positioning step is no less than 1/2 the thickness of the seal ring.

6. The triple offset butterfly valve of claim 2, wherein the maximum outer contour of the seal ring pressure ring is less than the minimum outer contour of the valve body seat.

7. The triple offset butterfly valve of claim 2, wherein the butterfly plate does not interfere with the valve seat of the valve body when the butterfly plate has an over-opening angle of 5 ° to 10 °.

8. The triple offset butterfly valve of claim 1, wherein the drive includes a worm gear case and a handle.

9. The triple offset butterfly valve of claim 8, wherein the worm gear case is coupled to an outer end of the valve stem.

10. The triple offset butterfly valve of claim 9, wherein the handle is coupled to the worm gear case by a worm linkage.

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