CN218177975U

CN218177975U - Valve body part structure of eccentric half-ball valve

Info

Publication number: CN218177975U
Application number: CN202221928648.1U
Authority: CN
Inventors: 郑云海; 刘伟; 岳中明; 彭盛列
Original assignee: CHONGQING HAIWANG INSTRUMENT CO LTD
Current assignee: CHONGQING HAIWANG INSTRUMENT CO LTD
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-12-30
Anticipated expiration: 2032-07-25

Abstract

The utility model relates to the technical field of valves, in particular to a valve body part structure of an eccentric half-ball valve, which comprises a valve body, wherein the upper side of the valve body is provided with a horizontal mounting surface and is used for mounting an actuator, a mounting cavity is arranged inside the valve body and is used for mounting a valve core, and liquid drainage channels are respectively arranged at two ends of the valve body and are respectively communicated with the mounting cavity; a mounting hole is formed in the upper side of the valve body and in a position opposite to the mounting cavity, and the size of the mounting hole is larger than that of the valve core in the mounting cavity so that the valve core can be placed in the mounting hole; a valve cover is arranged on the upper side of the valve body and corresponds to the mounting hole, a valve cover sealing structure is arranged between the valve cover and the valve body, and the valve cover and the valve body are connected through a connecting structure; the utility model has the characteristics of structural design is simple reasonable more, can make things convenient for the assembly more, can make things convenient for the dismouting maintenance.

Description

Valve body part structure of eccentric half-ball valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to an eccentric half ball valve body part structure.

Background

The eccentric half ball valve is a novel ball valve type, and has certain advantages unique to the structure of the eccentric half 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 pneumatic and electric actuating mechanism is matched, so that the adjustment and the tight cutting of the medium can be realized. The cutting device is widely suitable for working conditions of strict cutting requirements of petroleum, chemical engineering, urban water supply and drainage and the like. The valve is opened or closed by rotating the valve chain. The ball valve switch is light, small in size, reliable in sealing, simple in structure and convenient to maintain, can be made into a large-caliber ball valve, a sealing surface and a spherical surface are always in a closed state, and are not easily eroded by a medium, so that the ball valve switch is widely applied to various industries.

Fig. 9 shows an eccentric half ball valve structure of a conventional structure, which includes a valve body and a valve core, and in order to facilitate assembly, the size of the valve core is generally designed to be smaller than that of a liquid discharge channel formed in the valve body, and during assembly, the valve core is inserted into the liquid discharge channel and is completely assembled. This allows the valve element to be sized smaller than the drain passage, resulting in reduced sealing performance. And the existing structure is inconvenient to assemble and has the defect of difficult disassembly, assembly and maintenance.

Therefore, how to provide an eccentric half-ball valve body part structure which has simpler and more reasonable structural design, can be more conveniently assembled and can be conveniently disassembled, assembled and maintained becomes the technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that how to provide a structural design is simple reasonable more, can make things convenient for the assembly more, can make things convenient for the eccentric half-ball valve body part structure of dismouting maintenance.

In order to achieve the purpose, the utility model provides a valve body part structure of an eccentric half ball valve, which comprises a valve body, wherein the upper side of the valve body is provided with a horizontal mounting surface and is used for mounting an actuator, a mounting cavity is arranged inside the valve body and is used for mounting a valve core, and liquid drainage channels are respectively arranged at two ends of the valve body and are respectively communicated with the mounting cavity; the valve is characterized in that a mounting hole is formed in the upper side of the valve body and in a position opposite to the mounting cavity, and the size of the mounting hole is larger than that of the valve core in the mounting cavity so that the valve core can be placed in the mounting hole; a valve cover is arranged on the upper side of the valve body and corresponds to the mounting hole, a valve cover sealing structure is arranged between the valve cover and the valve body, and the valve cover and the valve body are connected through a connecting structure; the valve cover is provided with a vertical hole for installing the valve rod, and the upper end and the lower end of the valve rod can be respectively connected with the driving end of the actuator and the valve core.

Therefore, the valve body is provided with the mounting hole, and the size of the mounting hole is larger than that of the valve core, so that the valve core part can be placed in the mounting hole and mounted when the whole eccentric half-ball valve is assembled; and a valve cover is arranged corresponding to the mounting hole on the valve body, the valve cover is mounted and connected on the valve body through a connecting structure, and a valve cover sealing structure is arranged between the valve cover and the valve body to seal the valve cover and the valve body so as to avoid leakage. The valve cover is provided with a vertical hole for installing a valve rod, the lower end of the valve cover extends into the valve body and is in transmission connection with the valve core, and the upper end of the valve rod is in transmission connection with the driving end of the actuator. For the installation of accomplishing from valve body tip putting into of case among the original structure, this structure is put into the installation with the case from the mounting hole on the valve body, and structural design is simple more reasonable, can make things convenient for the completion installation more, can make things convenient for the dismouting maintenance of whole eccentric hemisphere valve more. And the valve body structure can ensure that the design size of the valve core is larger than the size of the liquid drainage channel on the valve body, improve the sealing effect of the valve core and better bear the pressure of liquid.

Preferably, the outer circumference of the upper end of the valve cover protrudes outwards to form a mounting flange, and the upper end face of the mounting flange forms the mounting surface.

Like this, through forming the mounting flange dish on the valve gap, the up end formation mounting face of mounting flange dish is used for the installation to set up the executor, can make things convenient for the installation of executor more, and structural design is more reasonable.

As optimization, the upper side of the valve body is provided with an installation boss which is arranged in an upward protruding manner and is designed into a cylindrical structure, and the upper end face of the installation boss is provided with the installation hole; the whole cylindrical structural design that is of valve gap, and the valve gap lower extreme pastes and installs on the installation boss.

Like this, through at the protruding installation boss that forms of valve body upside, design the mounting hole on the installation boss upper surface, the terminal surface is a horizontally face under the valve gap, and the valve gap lower extreme is installed in laminating on the installation boss, can make things convenient for the installation of valve gap more.

Preferably, the connecting structure comprises a circle of connecting flange formed by horizontally and outwards protruding the outer circumferential surface of the lower end of the valve cover, a plurality of connecting holes are formed in the connecting flange, connecting screws are arranged in the connecting holes, and the lower ends of the connecting screws are connected and arranged in threaded holes formed in the mounting boss.

Like this, through forming flange, lie in that the valve body links to each other, can make things convenient for the dismouting between valve body and the valve gap more to connection structure is more reliable.

As optimization, the region on the lower surface of the valve cover, which corresponds to the mounting hole, protrudes downwards to form a matching protrusion, and the matching protrusion is inserted into the mounting hole; the valve cover sealing structure comprises an O-shaped sealing ring arranged between the matching protrusion and the mounting hole; the upper end of the matching bulge is provided with a horizontal first sealing step surface, and a second sealing step surface corresponding to the first sealing step surface is arranged on the mounting hole; and a valve cover sealing ring is arranged between the first sealing step surface and the second sealing step surface.

Like this, form the cooperation arch on the valve gap and insert the cooperation in the mounting hole, can make things convenient for the installation of valve gap more to can also make things convenient for more the sealed between valve gap and the valve body.

Preferably, a sealing ring is arranged between the valve rod and the vertical hole, a filler made of PTFE or graphite is arranged between the valve rod and the vertical hole, and a filler gland and a filler pressing plate are arranged above the filler in the vertical hole.

Like this, the sealed effect between the perpendicular hole on valve gap and the valve gap is better, the avoiding that can be better leaks.

To sum up, the above structure is convenient for the case to put in from the mounting hole and accomplish the installation through designing the mounting hole at the valve body upside, at the corresponding mounting hole design valve gap, the valve gap upper end forms the installation face and is used for installing the executor, makes things convenient for the installation of executor to arrange. The whole structure is designed to be simpler and more reasonable, and the assembly, disassembly and maintenance can be facilitated.

Drawings

Fig. 1 is a schematic structural diagram of an eccentric half ball valve using the structure of the present invention.

Fig. 2 is a schematic view of fig. 1 rotated by an angle.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a left side view of fig. 1.

Fig. 5 isbase:Sub>A schematic sectional viewbase:Sub>A-base:Sub>A of fig. 4.

Fig. 6 is a partially enlarged schematic view of a B position in fig. 5.

Fig. 7 is a partially enlarged schematic view of the position C in fig. 5.

Fig. 8 is a schematic view of the valve cartridge of fig. 1.

Fig. 9 is a schematic structural view of an eccentric half ball valve of a conventional structure.

Detailed Description

In the following, the present invention will be further explained with reference to the drawings and embodiments of an eccentric half ball valve using the structure of the present invention, it should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of description of the present invention and simplification of the description, but not for the purpose of indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 8 and fig. 1 to 8, an eccentric half ball valve comprises a valve body 1, wherein an installation cavity 2 is arranged in the valve body, a valve core 3 is horizontally and rotatably arranged in the installation cavity, and liquid drainage channels 4 are respectively arranged at two ends of the valve body and are respectively opposite to the installation cavity in a penetrating manner; an actuator 5 is arranged above the valve body, the actuator is provided with a driving end and is connected with a valve rod 6 which is vertically arranged downwards, and the lower end of the valve rod is connected with the valve core and can drive the valve core to horizontally rotate in the installation cavity so that the valve core can complete the disconnection and the communication of the two liquid drainage channels; the upper side and the lower side of the valve core are respectively connected with an upper rotating shaft 7 and a lower rotating shaft 8, and the inner wall of the mounting cavity on the valve body is respectively provided with an upper mounting hole and a lower mounting hole corresponding to the upper rotating shaft and the lower rotating shaft for the insertion mounting of the upper rotating shaft and the lower rotating shaft; go up the vertical upwards valve body setting that runs through of mounting hole, and go up the pivot upper end and be connected with the valve rod transmission, be equipped with seal structure between valve rod and last mounting hole.

Therefore, when the eccentric half-ball valve works, the two ends of the valve body are respectively connected with the pipeline, and the liquid drainage channels are respectively communicated with the pipeline. The installation sets up the executor on the valve body as actuating mechanism, and it can drive the valve rod and rotate, and the valve rod drives case horizontal rotation through last pivot, and the case horizontal rotation is in order to make the case can accomplish two flowing back passageways disconnection and intercommunication in the installation cavity. The valve core can be horizontally and rotatably installed through the upper rotating shaft and the lower rotating shaft, and the valve core can be installed in the upper installation hole and the lower installation hole in a matched mode in a rotatable mode respectively, so that when the eccentric half-ball valve with the structure is in a disconnection working condition, the valve rod is not subjected to radial force or the radial force is small, the structure can play a role in protecting the driving shaft, and the actuator can be more conveniently used for completing driving execution.

In the present embodiment, the upper rotating shaft 7 and the valve element 3 are integrally formed; the lower rotating shaft 8 and the valve core 3 are integrally formed.

Thus, the upper rotating shaft and the valve core and the lower rotating shaft and the valve core are integrally formed; for current structure, an organic whole nature is better, does not need the cooperation installation between last pivot and the case and between lower pivot and the case, can be through reducing required installation cooperation position quantity in order to improve sealing reliability.

In the present embodiment, a lower shaft sleeve 9 is disposed between the lower mounting hole and the lower rotating shaft, and a wear-resistant gasket 10 is disposed between the bottom surface of the lower mounting hole and the lower end surface of the lower rotating shaft.

Like this, through setting up axle sleeve and wear-resisting packing ring down, the cooperation precision between mounting hole and the lower pivot down can be better assurance, frictional force between lower pivot and the lower mounting hole that can be better drops.

In the present embodiment, an upper bushing 11 is provided between the upper mounting hole and the upper rotary shaft.

Therefore, the matching precision between the upper rotating shaft and the upper mounting hole can be better ensured.

In the specific embodiment, the valve core comprises a valve core plate 12 which is vertically arranged and integrally designed in a spherical structure, the middle parts of the upper and lower ends of the valve core plate are respectively and horizontally bent outwards to form connecting blocks 13 so that the valve core is integrally designed in a C-shaped structure, and the upper and lower surfaces of the two connecting blocks are respectively provided with the upper rotating shaft and the lower rotating shaft; the inner end of the liquid drainage channel is provided with a fillet structure so as to form a sealing working surface and can be attached and sealed by the spherical surface of the valve core plate.

Like this, the structural design of case is more reasonable, all is eccentric structure between case board and the last pivot and between case board and the lower pivot, and the drive operation can be made things convenient for more to sealing that can be better.

In this embodiment, the drainage channel includes a large diameter section at the inner end; a valve seat 14 designed in an annular structure is arranged in the large-diameter section, a small-diameter section of the valve seat is arranged at the outer end of the valve seat, a valve seat support ring 15 is sleeved on the small-diameter section of the valve seat, one end of the valve seat support ring is supported on a step surface formed by the small-diameter section of the valve seat and the valve seat in an abutting mode, and the other end of the valve seat support ring is supported on the step surface formed by the large-diameter section and the liquid discharge channel in an abutting mode; an annular mounting groove is formed in the outer end face of the valve seat, a valve seat sealing ring 16 is arranged in the annular mounting groove, and the valve seat sealing ring is attached to and supported on a step face formed by the large-diameter section and the liquid drainage channel; and the inner end of the inner hole of the valve seat is provided with a fillet structure to form the sealing working surface.

Like this for case and disk seat cooperation realize sealed, and whole structural design is more reasonable, the sealed effect of improvement that can be better.

In the specific embodiment, the outer circumferences of the two ends of the valve body respectively protrude outwards to form a flange connection disc structure.

Therefore, the installation and the use of the whole eccentric half ball valve are more convenient.

In summary, both sides of the valve core of the eccentric half ball valve with the structure can better bear the pressure generated by the fluid, and the eccentric half ball valve can be better suitable for working scenes with different flow directions of the fluid; the structure has the characteristics that the structure design is simpler and more reasonable, the driving execution can be more conveniently completed, and the sealing reliability can be improved by reducing the number of required installation matching positions; in the structure, medium pressure and eccentric force borne by the valve core when the valve core is closed act on the valve body and the upper valve cover, the valve rod only bears torque force, gaps among parts are eliminated, the sealing performance of the valve can be better guaranteed, and bidirectional sealing can be better realized.

Specifically, the upper side of the valve body is provided with a horizontal mounting surface for mounting an actuator 5, a mounting hole 17 is formed in the position, opposite to the mounting cavity, of the upper side of the valve body, and the size of the mounting hole is larger than that of a valve core in the mounting cavity, so that the valve core can be placed into the mounting hole; a valve cover 18 is arranged on the upper side of the valve body and corresponds to the mounting hole, a valve cover sealing structure is arranged between the valve cover and the valve body, and the valve cover and the valve body are connected through a connecting structure; the valve cover is provided with a vertical hole for installing the valve rod 6, and the upper end and the lower end of the valve rod can be respectively connected with the driving end of the actuator and the valve core.

Therefore, the valve body is provided with the mounting hole, and the size of the mounting hole is larger than that of the valve core, so that the valve core part can be placed in the mounting hole and mounted when the whole eccentric half-ball valve is assembled; and a valve cover is arranged corresponding to the mounting hole on the valve body and is mounted and connected on the valve body through a connecting structure, and a valve cover sealing structure is arranged between the valve cover and the valve body to seal the valve cover and the valve body so as to avoid leakage. The valve cover is provided with a vertical hole for installing a valve rod, the lower end of the valve cover extends into the valve body and is in transmission connection with the valve core, and the upper end of the valve rod is in transmission connection with the driving end of the actuator. For the case in original structure put into from the valve body tip and accomplish the installation, this structure is put into the installation with the case from the mounting hole on the valve body, and structural design is simple more reasonable, can make things convenient for the completion installation more, can make things convenient for the dismouting maintenance of whole eccentric half-ball valve more.

Specifically, the outer circumference of the upper end of the bonnet projects outwardly to form a mounting flange 19, the upper end face of which forms the mounting surface.

Like this, through forming the mounting flange dish in the valve gap upper end, the up end of mounting flange dish forms the mounting surface and is used for the installation to set up the executor, can make things convenient for the installation of executor more, and structural design is more reasonable.

Specifically, the upper side of the valve body is provided with an installation boss 20 which is arranged in an upward protruding manner and is designed into a cylindrical structure, and the upper end face of the installation boss is provided with the installation hole; the valve cover is integrally designed into a cylindrical structure, and the lower end of the valve cover is attached to the mounting boss.

Specifically, the connecting structure comprises a circle of connecting flange 21 formed by horizontally and outwards protruding the outer circumferential surface of the lower end of the valve cover, a plurality of connecting holes are formed in the connecting flange, connecting screws are arranged in the connecting holes, and the lower ends of the connecting screws are connected and arranged in threaded holes formed in the mounting boss.

Specifically, the area on the lower surface of the valve cover corresponding to the mounting hole protrudes downwards to form a matching protrusion 22, and the matching protrusion is inserted into and matched with the mounting hole; the valve cover sealing structure comprises an O-shaped sealing ring 23 arranged between the matching protrusion and the mounting hole; the upper end of the matching bulge is provided with a horizontal first sealing step surface, and a second sealing step surface corresponding to the first sealing step surface is arranged on the mounting hole; a bonnet seal 24 is provided between the first seal step surface and the second seal step surface.

Specifically, a sealing ring is arranged between the valve rod and the vertical hole, a packing 25 made of PTFE or graphite is further arranged between the valve rod and the vertical hole, and a packing gland 26 and a packing pressure plate 27 are arranged above the packing in the vertical hole.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A valve body part structure of an eccentric half-ball valve comprises a valve body, wherein a horizontal mounting surface is arranged on the upper side of the valve body and used for mounting an actuator, a mounting cavity is formed in the valve body and used for mounting a valve core, and liquid drainage channels are respectively arranged at two ends of the valve body and are respectively communicated with the mounting cavity; the valve is characterized in that a mounting hole is formed in the upper side of the valve body and in a position opposite to the mounting cavity, and the size of the mounting hole is larger than that of the valve core in the mounting cavity so that the valve core can be placed in the mounting hole; a valve cover is arranged on the upper side of the valve body and corresponds to the mounting hole, a valve cover sealing structure is arranged between the valve cover and the valve body, and the valve cover and the valve body are connected through a connecting structure; the valve cover is provided with a vertical hole and used for installing a valve rod, and the upper end and the lower end of the valve rod can be respectively connected with the actuator driving end and the valve core.

2. The partial structure of an eccentric hemisphere valve body as set forth in claim 1, wherein: the outer circumference of the upper end of the valve cover protrudes outwards to form a mounting flange, and the upper end face of the mounting flange forms the mounting surface.

3. The partial structure of an eccentric hemisphere valve body as set forth in claim 1, wherein: the upper side of the valve body is provided with an installation boss which is arranged in an upward protruding manner and is designed into a cylindrical structure, and the upper end surface of the installation boss is provided with the installation hole; the valve cover is integrally designed into a cylindrical structure, and the lower end of the valve cover is attached to the mounting boss.

4. A valve body portion structure of an eccentric half ball valve as claimed in claim 3, wherein: the connecting structure comprises a circle of connecting flange formed by horizontally and outwards protruding the outer circumferential surface of the lower end of the valve cover, a plurality of connecting holes are formed in the connecting flange, connecting screws are arranged in the connecting holes, and the lower ends of the connecting screws are connected and arranged in threaded holes formed in the mounting boss.

5. The partial structure of an eccentric hemisphere valve body as set forth in claim 3, wherein: the area on the lower surface of the valve cover, which corresponds to the mounting hole, protrudes downwards to form a matching bulge and is inserted and matched in the mounting hole; the valve cover sealing structure comprises an O-shaped sealing ring arranged between the matching protrusion and the mounting hole; the upper end of the matching bulge is provided with a horizontal first sealing step surface, and a second sealing step surface corresponding to the first sealing step surface is arranged on the mounting hole; and a valve cover sealing ring is arranged between the first sealing step surface and the second sealing step surface.

6. The partial structure of an eccentric hemisphere valve body as set forth in claim 1, wherein: a sealing ring is arranged between the valve rod and the vertical hole, a packing made of PTFE or graphite is arranged between the valve rod and the vertical hole, and a packing gland and a packing pressing plate are arranged above the packing in the vertical hole.