CN212055929U - Valve body structure of eccentric ball valve - Google Patents

Abstract

The utility model discloses a valve body structure of eccentric ball valve, including valve body, valve rod, the case cover of cover on the valve rod and the case of being connected with the case cover, the inside of valve body still is equipped with the disk seat, and it has first counter bore to open in the bottom of valve body, just the cover has the end cover in first counter bore on the valve rod, and open the outer end of valve body has the second counter bore, is equipped with the disk seat base on the disk seat, and the disk seat base is connected with lateral wall at the bottom of the second counter bore, and the winding has the metal to twine to fill up in the second counter bore and on the disk seat base. The valve body structure of the eccentric ball valve can still ensure the sealing effect of the valve seat under high pressure, uneven load and strong vibration, and can effectively prevent liquid leakage.

Description

Valve body structure of eccentric ball valve

Technical Field

The utility model belongs to the technical field of the liquid valve, concretely relates to valve body structure of eccentric ball valve.

Background

The eccentric ball valve is a novel ball valve type, and has certain advantages unique to the structure of the eccentric ball valve, such as no friction on the switch, difficult abrasion on the seal and small opening and closing torque. This reduces the size of the actuator to be fitted. And a multi-rotation electric actuating mechanism is matched, so that the adjustment and the tight cutting of the medium can be realized. The device is widely applicable to working conditions of strict cutting requirements such as petroleum, chemical engineering, urban water supply and drainage and the like. But eccentric ball valve also belongs to one kind of ball valve, and at the valve rod rotation in-process of opening and close the case, its liquid of carrying can lead to the valve body internal pressure to uprise, especially at the in-process that the valve was opened, not only pressure rapid change, its vibrations sense is also very strong, opens and close the in-process for a long time, can make the leakproofness of disk seat reduce, makes liquid leakage easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a valve body structure of eccentric ball valve to solve current eccentric ball valve and open and close the in-process for a long time and can make the disk seat leakproofness variation, make the problem of liquid leakage easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a valve body structure of eccentric ball valve, including valve body, valve rod, the case cover of cover on the valve rod and with the case that the case cover is connected, the inside of valve body still is equipped with the disk seat open the bottom of valve body has first counter bore, in first counter bore and the cover has the end cover on the valve rod, open the outer end of valve body has the second counter bore, be equipped with the disk seat base on the disk seat, the disk seat base is connected with second counter bore bottom side wall just be in the second counter bore the winding has the metal to twine the pad on the disk seat base.

Preferably, a spring is arranged in the valve body and arranged at one end, far away from the valve core, of the valve seat to provide pretightening force.

Preferably, a sealing ring is arranged at one end of the valve body and the valve seat far away from the valve core.

Preferably, one end of the valve seat close to the valve core is provided with a sealing lip.

Preferably, a graphite gasket is arranged at the bottom of the inner part of the first counter bore.

Preferably, a step surface is arranged at the upper end of the first counter bore, and the bottom sleeve is provided with a step shape matched with the step surface.

The utility model discloses a technological effect and advantage: this valve body structure of eccentric ball valve simple structure is provided with the second counter bore and makes the disk seat base fall into in the second counter bore, and the partial winding that falls into at the second counter bore at the disk seat base has the metal to twine the pad, can make the disk seat sealed through the metal to twine the pad with the part that the valve body is connected, and the metal twines the pad and seals and have fine high pressure resistant and cushioning effect, can guarantee that the ball valve is opening and close the sealed effect of in-process assurance disk seat.

Drawings

Fig. 1 is a longitudinal section of the present invention.

In the figure: 1-valve body, 2-valve rod, 3-valve core sleeve, 4-valve core, 5-first counter bore, 6-bottom sleeve, 7-step surface, 8-graphite gasket, 9-valve seat, 10-sealing lip, 11-valve seat base, 12-second counter bore, 13-metal winding pad, 14-spring and 15-sealing ring.

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.

The utility model provides a valve body structure of eccentric ball valve as shown in figure 1, which comprises a valve body 1, a valve rod 2, a valve core sleeve 3 sleeved on the valve rod 2 and a valve core 4 connected with the valve core sleeve 3, wherein a valve seat 9 is arranged inside the valve body 1, a first counter bore 5 is arranged at the bottom of the valve body, a bottom sleeve 6 is sleeved in the first counter bore 5 and on the valve rod 2, a second counter bore 12 is arranged at the outer end of the valve body 1, and a valve seat base 11 is arranged on the valve seat 9. in the present embodiment, the valve seat 9 and the valve seat base 11 are in an integral welding structure, of course, an integral casting structure can be adopted, and not only is the explanation that the valve seat base 11 is connected with the bottom side wall of the second counter bore 12, in the present embodiment, the connection mode of the valve seat base 11 and the bottom side wall of the second counter bore 12 is in clearance fit, a metal winding pad 13 is arranged on the valve seat base 11, namely, the metal winding pad 13 is wound at, the metal winding pad 13 can automatically adjust the pressure thermal cycle and vibration of the pipeline system, and is especially suitable for valve bodies with uneven load, easy loosening of joint force, periodic change of temperature and pressure, and impact or vibration.

In this embodiment, a spring 14 is arranged inside the valve body 1, the spring 14 is arranged at one end, away from the valve element 4, of the valve seat 9 to provide a pre-tightening force, specifically, see fig. 1, in this example, the spring 14 can push the valve seat 9 to push towards the valve element 4 through elasticity of the spring 14 itself, so as to ensure a sealing effect of the valve seat, a pressing ring can be arranged between the spring 14 and the valve seat 9, an auxiliary sealing force is generated by using a piston effect of the pressing ring, a sealing ring 15 is arranged at one end, away from the valve element 4, of the valve body 1 and the valve seat 9, see fig. 1, and the sealing ring 15 can be made of rubber to ensure the.

In this embodiment, one end of the valve seat 9 close to the valve core 4 is provided with a sealing lip 10, and the valve seat 9 adopts a three-side surrounding structure, so that the sealing lip 10 can play a good fireproof role in a surrounding cavity.

In the operation process of actual valve body, because static does not have fine elimination, the static phenomenon of catching a fire appears easily, consequently is equipped with graphite gasket 8 in the inside bottom of first counter bore 5 equally, and graphite gasket 8 also can play fine fire prevention effect.

In order to ensure the connection effect of the lower end of the valve rod 2 and the valve body 1, the upper end of the first counter bore 5 is provided with a step surface 7, and the bottom sleeve 6 is provided with a step shape matched with the step surface 7, so that a step transition structure on the bottom sleeve 6 is pressed together with the step surface 7, the valve rod 2 can be effectively prevented from loosening, and the normal operation can be ensured under the condition of large torque force.

The working principle is as follows: in this concrete implementation, drive valve rod 2 through the power supply and rotate, after valve rod 2 rotated a certain position, case 4 was in like the state of fig. 1 this moment, belonged to the closed condition this moment, namely liquid can not pass through the ball valve promptly, when valve rod 2 reconversion, case 4 was in when one side this moment, then belonged to the open condition, and liquid thing can pass through this moment.

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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (6)

1. The utility model provides a valve body structure of eccentric ball valve, includes valve body (1), valve rod (2), cover case (3) on valve rod (2) and with case (4) that case cover (3) are connected, the inside of valve body (1) still is equipped with disk seat (9), its characterized in that: open the bottom of valve body has first counter bore (5), just in first counter bore (5) the cover has a bed cover (6) on valve rod (2), open the outer end of valve body (1) has second counter bore (12), be equipped with valve seat base (11) on valve seat (9), valve seat base (11) are connected with second counter bore (12) end lateral wall in second counter bore (12) and the winding has metal to twine and fills up (13) on valve seat base (11).

2. The structure of the valve body of an eccentric ball valve according to claim 1, wherein: a spring (14) is arranged in the valve body (1), and the spring (14) is arranged at one end, far away from the valve core (4), of the valve seat (9) to provide pretightening force.

3. The structure of the valve body of an eccentric ball valve according to claim 2, wherein: and a sealing ring (15) is arranged at one end of the valve body (1) and one end of the valve seat (9) far away from the valve core (4).

4. The structure of the valve body of an eccentric ball valve according to claim 1, wherein: and a sealing lip (10) is arranged at one end of the valve seat (9) close to the valve core (4).

5. The structure of the valve body of an eccentric ball valve according to claim 1, wherein: and a graphite gasket (8) is arranged at the bottom inside the first counter bore (5).

6. The structure of the valve body of an eccentric ball valve according to claim 1, wherein: the upper end of the first counter bore (5) is provided with a step surface (7), and the bottom sleeve (6) is provided with a step shape matched with the step surface (7).

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