阅读说明：本技术 偏心半球阀及其组装方法 (Eccentric half ball valve and assembling method thereof ) 是由 孙乐 范伟 于 2019-10-23 设计创作，主要内容包括：本发明涉及阀门技术领域,特别是涉及一种偏心半球阀及其组装方法。一种偏心半球阀,包括阀体以、调节组件及阀座组件,所述阀座组件位于所述阀体内部,所述阀体的一侧开设有调节孔,所述调节组件的一端穿设于所述调节孔并与所述阀座组件连接,另一端位于所述调节孔外,调节所述调节组件以带动所述阀座组件在所述阀体内运动,并使所述阀座组件密封地与所述阀体抵接。一种偏心半球阀组装方法,包括以下步骤：将所述阀座组件放入所述阀体内部；将所述调节组件的一端穿过所述调节孔并与所述阀座组件连接；调节所述调节组件,并带动所述阀座组件在所述阀体内运动,且使所述阀座组件与阀体之间密封。本发明的优点在于：组装方便、阀座组件位置可调节。(The invention relates to the technical field of valves, in particular to an eccentric half ball valve and an assembling method thereof. The eccentric half ball valve comprises a valve body, an adjusting component and a valve seat component, wherein the valve seat component is located inside the valve body, an adjusting hole is formed in one side of the valve body, one end of the adjusting component penetrates through the adjusting hole and is connected with the valve seat component, the other end of the adjusting component is located outside the adjusting hole, the adjusting component is adjusted to drive the valve seat component to move in the valve body, and the valve seat component is enabled to be abutted to the valve body in a sealing mode. An eccentric hemisphere valve assembling method comprises the following steps: placing the valve seat assembly inside the valve body; passing one end of the adjustment assembly through the adjustment aperture and into engagement with the valve seat assembly; and adjusting the adjusting assembly, driving the valve seat assembly to move in the valve body, and sealing the valve seat assembly and the valve body. The invention has the advantages that: the assembly is convenient, and the position of the valve seat component can be adjusted.)

1. The eccentric half ball valve is characterized by further comprising an adjusting assembly, an adjusting hole communicated with the inside of the valve body is formed in one side of the valve body, one end of the adjusting assembly penetrates through the adjusting hole and is connected with the valve seat assembly, the other end of the adjusting assembly is located outside the adjusting hole, the adjusting assembly is adjusted to drive the valve seat assembly to move in the valve body, and the valve seat assembly is enabled to be abutted to the valve body in a sealing mode.

2. The eccentric half ball valve according to claim 1, wherein the adjusting assembly comprises an adjusting screw and a locking unit, a threaded hole is formed in the valve seat assembly, one end of the adjusting screw, which extends into the adjusting hole, is in threaded connection with the threaded hole, the locking unit is arranged at one end of the adjusting screw, which is located outside the adjusting hole, and the locking unit is used for locking the adjusting screw when the adjusting screw drives the valve seat assembly to move to a preset position.

3. The eccentric half ball valve according to claim 1 or 2, further comprising a fine adjustment rod, wherein a fine adjustment hole is further formed in the valve body in the circumferential direction of the side provided with the adjustment hole, one end of the fine adjustment rod penetrates through the fine adjustment hole and is in threaded connection with the fine adjustment hole, and the fine adjustment rod is pressed against one side of the valve seat assembly.

4. The eccentric half ball valve according to claim 3, wherein the number of the adjusting holes and the number of the fine adjusting holes are respectively multiple, each adjusting hole corresponds to one adjusting assembly, each fine adjusting hole corresponds to one fine adjusting rod, the adjusting holes and the fine adjusting holes are respectively distributed along the circumferential direction of one side of the valve body, and at least one fine adjusting hole is arranged between every two adjacent adjusting holes.

5. The eccentric half ball valve as recited in claim 1, wherein the valve seat assembly comprises a mounting seat, a sealing seat and a retainer ring, the sealing seat is hermetically mounted on the mounting seat, the adjusting assembly is connected with the mounting seat, the mounting seat can be hermetically connected with the valve body, a limiting step is arranged on the outer surface of the sealing seat, and the retainer ring can be matched with the limiting step to limit the sealing seat from moving axially to separate from the mounting seat.

6. The eccentric half ball valve according to claim 5, wherein an installation groove is formed in the inner wall of the valve body, and the retainer ring is rotatably fixed in the installation groove.

7. The eccentric half ball valve as claimed in claim 1, further comprising a valve stem and a valve core, wherein the valve stem is installed inside the valve body, an axis of the valve stem is perpendicular to a medium flowing direction in the eccentric half ball valve, the valve core is vertically installed on the valve stem, and the valve core can rotate relative to the valve stem from the vertical direction to the medium flowing direction so as to cooperate with the valve seat assembly to seal the eccentric half ball valve.

8. The eccentric half ball valve of claim 7, further comprising a retainer mounted within the valve body and located below the valve element trajectory to contact the valve element to limit movement of the valve element when the valve element rotates to mate with the valve seat assembly for sealing.

9. An eccentric half ball valve assembly method, wherein the eccentric half ball valve adopts the eccentric half ball valve as claimed in claim 1; the assembling method comprises the following steps:

placing the valve seat assembly inside the valve body;

passing one end of the adjustment assembly through the adjustment aperture and into engagement with the valve seat assembly; and

and adjusting the adjusting assembly, driving the valve seat assembly to move in the valve body, and sealing the valve seat assembly and the valve body.

10. The method for assembling the eccentric hemisphere valve according to claim 9, wherein the eccentric hemisphere valve further comprises a retainer ring, and an installation groove is formed in the inner wall of the valve body; after the step of placing the valve seat assembly inside the valve body, the eccentric hemispherical valve assembling method further comprises the steps of:

placing the check ring into the valve body;

and rotating the check ring and clamping the check ring into the mounting groove.

Technical Field

The invention relates to the technical field of valves, in particular to an eccentric half ball valve and an assembling method thereof.

Background

The eccentric half ball valve is usually installed on a pipeline for conveying fluid, and is used for controlling the opening/closing of the pipeline so as to realize the flow control of the fluid. The existing eccentric half ball valve generally comprises a valve seat, a valve body, a valve core and other parts, wherein the valve seat is forcibly pressed into the valve body through the parts such as a jack, the valve seat is not only inconvenient to install, but also has large error after installation, the uniform clearance between the valve seat and the valve body is hardly ensured, and the sealing of the eccentric half ball valve is not facilitated.

Disclosure of Invention

Therefore, it is necessary to provide an adjustable eccentric half ball valve with a conveniently installed valve seat and a method for installing the eccentric half ball valve.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an eccentric half ball valve, includes valve body and disk seat subassembly, the disk seat subassembly is located inside the valve body, its characterized in that, eccentric half ball valve still includes adjusting part, one side of valve body seted up with the regulation hole of the inside intercommunication of valve body, adjusting part's one end wear to locate the regulation hole and with the disk seat subassembly is connected, the other end is located outside the regulation hole, adjust adjusting part is in order to drive the disk seat subassembly is close to or keeps away from the valve body, and makes the disk seat subassembly seal ground with the valve body butt.

According to the installation method, the valve seat assembly is installed by arranging the adjusting assembly, so that the valve seat assembly is driven to move by adjusting the adjusting assembly; meanwhile, the adjusting assembly is connected with the valve seat assembly, so that a certain limiting and guiding effect is achieved on the valve seat assembly, the valve seat assembly can be guaranteed to be uniform in peripheral clearance between the valve seat assembly and the valve body when being installed, namely, the axis of the valve seat assembly can be guaranteed to be overlapped with the axis of the outlet valve body, the valve seat assembly cannot be installed in a deviation mode, and therefore the whole sealing performance is better when the eccentric half-ball valve is closed; secondly, the adjusting component can drive the valve seat component to be close to or far away from the valve body, so that the position of the valve seat component in the valve body can be adjusted, the valve seat component can be better matched with a sealing seat of the valve body to realize sealing, and the situations of leakage points and the like in the sealing of the eccentric half-ball valve are avoided.

In one embodiment, the adjusting assembly comprises an adjusting screw and a locking unit, a threaded hole is formed in the valve seat assembly, and one end of the adjusting screw is in threaded connection with the threaded hole. The locking unit of the eccentric half-ball valve is arranged at one end of the adjusting screw rod, which is positioned outside the adjusting hole, and the locking unit locks the adjusting screw rod when the adjusting screw rod drives the valve seat assembly to move to a preset position. It will be appreciated that the provision of a locking unit ensures that the position of the adjusted seat assembly is unchanged.

In one embodiment, the eccentric half ball valve further comprises a fine adjustment rod, a fine adjustment hole is further formed in the valve body in the circumferential direction on the same side with the adjustment hole, one end of the fine adjustment rod penetrates through the fine adjustment hole and is in threaded connection with the fine adjustment hole, and the fine adjustment rod is abutted against one side of the valve seat assembly.

It can be understood that the position of the valve seat assembly can be finely adjusted by arranging a fine adjustment rod, so that the error of installation of the valve seat assembly is reduced; simultaneously, the fine adjustment rod is mutually matched with the adjusting component, so that the valve seat component is more convenient and faster to install.

In one embodiment, the number of the adjusting holes and the number of the fine adjusting holes are respectively multiple, each adjusting hole corresponds to one adjusting assembly, each fine adjusting hole corresponds to one fine adjusting rod, the adjusting holes and the fine adjusting holes are distributed along the circumferential direction of one side of the valve body respectively, and at least one fine adjusting hole is arranged between every two adjacent adjusting holes.

In one embodiment, the valve seat assembly comprises a mounting seat, a sealing seat and a retainer ring, the sealing seat is hermetically mounted on the mounting seat, the adjusting assembly is connected with the mounting seat, the mounting seat can be hermetically connected with the valve body, a limiting step is arranged on the outer surface of the sealing seat, and the retainer ring can be matched with the limiting step to limit the sealing seat to move axially to be separated from the mounting seat.

It can be understood that the retainer ring is arranged, so that the sealing seat can be prevented from being separated from the mounting seat under the action of stress, and the sealing failure and other conditions are avoided.

In one embodiment, an installation groove is formed in the inner wall of the valve body, and the retainer ring is rotationally fixed in the installation groove.

In one embodiment, the eccentric half ball valve further comprises a valve rod and a valve core, the valve rod is installed inside the valve body, the axis of the valve rod is perpendicular to the medium flowing direction in the eccentric half ball valve, the valve core is vertically installed on the valve rod, and the valve core can rotate relative to the valve rod from the vertical direction to the medium flowing direction so as to be matched with the valve seat assembly to seal the eccentric half ball valve.

In one embodiment, the eccentric half-ball valve further comprises a limiting piece, wherein the limiting piece is installed inside the valve body and located below the motion trail of the valve core, so that the limiting piece is in contact with the valve core when the valve core rotates to be matched and sealed with the valve seat assembly to limit the motion of the valve core.

The limiting piece can limit the movement of the valve core assembly, so that the damage to the upper sealing surface of the valve core assembly and/or the valve seat assembly caused by the over-closing of the eccentric half-ball valve is avoided, the sealing gap is ensured to be uniform up and down, and the sealing failure is prevented from being easily caused when the valve is pressed; secondly, when the eccentric hemisphere valve was closed, can play the effect of certain bearing to the case subassembly, avoid the tie point atress of case subassembly and valve body to take place to deform.

The invention also provides the following technical scheme:

the eccentric half ball valve is adopted; the assembling method comprises the following steps:

placing the valve seat assembly inside the valve body;

passing one end of the adjustment assembly through the adjustment aperture and into engagement with the valve seat assembly; and

and adjusting the adjusting assembly, driving the valve seat assembly to be close to or far away from the valve body, and sealing the valve seat assembly and the valve body.

It can be understood that, the assembly method can realize the installation of the valve seat assembly through the adjusting assembly and can realize the position adjustment of the valve seat assembly, the installation is convenient, and the sealing effect of the eccentric half-ball valve is better.

In one embodiment, the eccentric half ball valve further comprises a retainer ring, and the inner wall of the valve body is provided with an installation groove; after the step of placing the valve seat assembly inside the valve body, the eccentric hemispherical valve assembling method further comprises the steps of:

placing the check ring into the valve body;

and rotating the check ring and clamping the check ring into the mounting groove.

Compared with the prior art, the eccentric half-ball valve is provided with the adjusting assembly, so that the valve seat assembly is driven to move in the adjusting assembly mode to realize the installation of the valve seat assembly; meanwhile, the adjusting assembly is connected with the valve seat assembly, so that a certain limiting and guiding effect is achieved on the valve seat assembly, the valve seat assembly can be guaranteed to be uniform in peripheral clearance between the valve seat assembly and the valve body when being installed, namely, the axis of the valve seat assembly can be guaranteed to be overlapped with the axis of the outlet, the valve seat assembly cannot be installed in a deviation mode, and therefore the whole sealing performance is better when the eccentric half-ball valve is closed; secondly, the adjusting component can drive the valve seat component to be close to or far away from the valve body, so that the position of the valve seat component in the valve body can be adjusted, the valve seat component can be better matched with a sealing seat of the valve body to realize sealing, and the situations of leakage points and the like in the sealing of the eccentric half-ball valve are avoided.

Drawings

FIG. 1 is a cross-sectional view from a perspective of an eccentric half ball valve as provided herein;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural view of an eccentric half ball valve provided in the present application from another perspective;

FIG. 4 is an enlarged view of a portion of FIG. 1 at B;

FIG. 5 is a schematic view of a retainer ring according to the present application being placed in a valve body;

FIG. 6 is a schematic view of the structure provided by the present application rotated 90 degrees and mounted on a valve body;

fig. 7 is a step diagram of an assembling method of an eccentric half ball valve provided by the present application.

In the figure, an eccentric hemisphere valve 100, a valve body 10, an inlet 11, an outlet 12, a valve cavity 13, a mounting groove 131, an adjusting hole 14, a valve cover 15, a hanging ring 151, a fine adjusting hole 16, a valve seat assembly 20, a mounting seat 21, a mounting step 211, a valve port 212, a sealing seat 22, a limiting step 221, a butting portion 222, a retainer ring 23, an adjusting assembly 30, an adjusting screw 31, a locking unit 32, a locking member 321, a gasket 322, a fine adjusting rod 40, a valve core assembly 50, a valve rod 51, a valve core 52, a limiting member 60 and an assembling method 200 of the eccentric hemisphere valve are shown.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the present invention provides an eccentric half ball valve 100 installed on a pipe for opening/closing the pipe to control the flow of fluid in the pipe. Here, the fluid may be water, gas, or the like.

Specifically, the eccentric half ball valve 100 includes a valve body 10, a valve seat assembly 20 and an adjusting assembly 30, the valve seat assembly 20 is located inside the valve body 10, one side of the valve body 10 is provided with an adjusting hole 14 communicated with the inside of the valve body 10, one end of the adjusting assembly 30 penetrates through the adjusting hole 14 and is connected with the valve seat assembly 20, the other end of the adjusting assembly 30 is located outside the adjusting hole 14, and the adjusting assembly 30 is adjusted to drive the valve seat assembly 20 in the valve body 10, so that the valve seat assembly 20 is abutted to the valve body 10 in a sealing manner.

It is understood that the adjustment assembly 30 is used to move the seat assembly 20 to effect installation of the seat assembly 20; meanwhile, the adjusting assembly 30 is connected with the valve seat assembly 20, so that a certain limiting and guiding effect is provided for the valve seat assembly 20, the uniformity of the peripheral gap between the valve seat assembly 20 and the valve body 3 during installation can be ensured, namely, the coincidence of the axis of the valve seat assembly 20 and the axis of the outlet valve body 10 can be ensured, the installation of the valve seat assembly 20 cannot deviate, and the integral sealing performance is better when the eccentric hemisphere valve is closed; secondly, the adjusting component 30 can drive the valve seat component 20 to be close to or far away from the valve body 10, so that the position of the valve seat component 20 in the valve body 10 can be adjusted, the valve seat component 20 can be better matched with a sealing seat of the valve body 10 to realize sealing, and the situations of leakage points and the like in the sealing of the eccentric half ball valve are avoided.

It should be explained that the error of installing the valve seat assembly 20 is a key point for ensuring the sealing effect of the eccentric half ball valve 100, because the valve seat assembly 20 is matched with the valve core assembly in the eccentric half ball valve 100 to realize the sealing of the eccentric half ball valve 100. If the peripheral gap between the valve seat assembly 20 and the valve body 10 is not uniform, so that when the valve core assembly is sealed with the valve seat assembly 20 in a matching manner, the valve core assembly is easily offset from the valve seat assembly 20, and the eccentric half ball valve 100 is prone to sealing failure.

Further, the valve body 10 has an inlet 11, an outlet 12 and a valve cavity 13, the valve cavity 13 is located at the inlet 11 and the outlet 12, the valve seat assembly 20 is accommodated in the valve cavity 13 and located at the outlet 12, the adjusting hole 14 is located on a side wall of the outlet 12 of the valve body 10 and is communicated with the valve cavity 13, and the adjusting assembly 30 drives the valve seat assembly 20 to approach or depart from the inlet or the outlet 12, and makes the valve seat assembly 20 abut against the valve body 10 in a sealing manner.

Alternatively, the axis of the adjustment bore 14 is arranged parallel to the axis of the valve body 10. In the present embodiment, the axis of the valve body 10 is coincident with or parallel to the axis of the inlet 11 or the axis of the outlet 12, i.e., the axis of the adjusting hole 14 is parallel to the axis of the inlet 11 or the axis of the outlet 12. Of course, in other embodiments, the axis of the adjusting hole 14 may not be parallel to the axis of the valve body 10, and the specific arrangement may be set according to the actual installation situation or requirement.

Preferably, the valve body 10 has a step 14 at the outlet 12, and the valve seat assembly 20 is disposed at the step 14.

Furthermore, one end of the valve body 10 is provided with a valve cover 15, and the valve cover 15 is hermetically covered on the valve body 10 and encloses the valve cavity 13 with the valve body 10. Preferably, the bonnet 15 is connected to the valve body 10 by a plurality of screws.

Optionally, a suspension buckle 151 is connected to the bonnet 15, and the suspension buckle 151 is used to cooperate with an external crane or the like to carry the eccentric half ball valve 100.

As shown in fig. 2, the valve seat assembly 20 includes a mounting seat 21 and a sealing seat 22, the sealing seat 22 is sealingly mounted on the mounting seat 21, the adjusting assembly 30 is connected to the mounting seat 21, and the mounting seat 21 can be sealingly connected to the valve body 10.

Preferably, the mounting seat 21 is located at the step 14, and the mounting seat 21 has a sealing member (not labeled) thereon, which is used for sealing cooperation with the step surface of the step 14 to realize the sealing connection between the mounting seat 21 and the valve body 10.

Further, the mounting seat 21 is provided with a mounting step 211, the sealing seat 22 is annular, and an inner ring of the sealing seat 22 is hermetically sleeved on the mounting step 211.

Preferably, the mounting seat 21 has a valve port 212, the valve port 212 is communicated with the inlet 11 or the outlet 12, and the eccentric half-ball valve 100 controls the opening and closing of the valve port 212 to control the connection or the disconnection between the inlet 11 and the outlet 12.

Further, the valve seat assembly 20 further comprises a retainer ring 23, the outer surface of the sealing seat 22 has a limit step 221, and the retainer ring 23 can cooperate with the limit step 221 to limit the axial movement of the sealing seat 22 away from the mounting seat 21.

It can be understood that, the limiting step 221 is disposed so as to form the abutting portion 222 on the outer surface of the sealing seat 22, and the abutting portion 222 can abut against the retaining ring 23 to block or limit the movement of the sealing seat 22 along the axial direction of the inlet 11, so as to avoid the sealing seat 22 being separated from the mounting seat 21 by the pipeline pressure, which may cause a sealing failure or the like.

Specifically, as shown in fig. 5 and 6, the inner wall of the valve cavity 13 has an installation groove 131, and the retainer ring 23 is rotatably inserted into the installation groove 131 and fixed by a positioning member. Here, the positioning member may be a bolt, a screw, or the like.

Preferably, in this embodiment, the retainer ring 23 is rotated by 90 degrees to be snapped into the mounting groove 131. It can be understood that the retainer ring 23 is installed in a rotating manner, so that the installation is convenient and the disassembly is convenient; utilize mounting groove 131 to carry on spacingly simultaneously, prevent that seal receptacle 22 from deviating from, simple structure.

As shown in fig. 2, the adjusting assemblies 30 may be a plurality of groups, each group of adjusting assemblies 30 corresponds to one adjusting hole 14, that is, the number of the adjusting holes 14 is a plurality, and the plurality of adjusting holes are evenly distributed along the circumferential direction of one side of the valve body 10, and the plurality of groups of adjusting assemblies 30 are inserted into the adjusting holes 14 in a one-to-one correspondence manner and are connected to the valve seat assembly 20.

Preferably, the number of adjustment assemblies 30 may be 4, 6, 8, etc. The specific number can be set according to the actual size of the valve body 10 or the installation requirement of the valve seat assembly 20, and will not be described herein.

Further, each set of the adjusting assembly 30 includes an adjusting screw 31, a threaded hole 23 is formed in the valve seat assembly 20, and one end of the adjusting screw 31 extends into the adjusting hole 14 and is in threaded connection with the threaded hole 23.

Preferably, the threaded hole 23 is located on the side of the mounting seat 21 remote from the sealing seat 22.

Further, the adjusting assembly 30 further includes a locking unit 32, the locking unit 32 is disposed at one end of the adjusting screw 31 located outside the adjusting hole 14, and when the adjusting screw 31 drives the valve seat assembly 20 to move to a predetermined position, the locking unit 32 locks the adjusting screw 31 to ensure that the position of the adjusted valve seat assembly 20 is unchanged.

Specifically, the locking unit 32 includes a locking member 321 and a spacer 322, the spacer 322 is sleeved on the adjusting screw 31 and the valve body 10 abuts against the adjusting screw 31, and the locking member 321 is in threaded connection with the adjusting screw 31 and abuts against the spacer 322 when the adjusting screw 31 is locked. It will be appreciated that the spacer 33 provides a force for locking the locking member 32, preventing the locking member 32 from being separated from the adjusting screw 31, and improving the reliability of locking the locking member 32.

Of course, in other embodiments, the locking unit 32 may also adopt other structures as long as the locking of the adjusting screw 31 can be realized.

As shown in fig. 3 and 4, the eccentric half ball valve 100 further includes a fine adjustment rod 40, a fine adjustment hole 16 is further formed in the circumferential direction of the side of the valve body 10 where the adjustment hole 14 is formed, one end of the fine adjustment rod 40 penetrates through the fine adjustment hole 16 and is in threaded connection with the fine adjustment hole 16, and the fine adjustment rod 40 is pressed against one side of the valve seat assembly 20. So that the position of the seat assembly 20 can be finely adjusted to reduce errors in the installation of the seat assembly 20; meanwhile, the fine adjustment rod 40 is matched with the adjustment assembly 30, so that the valve seat assembly 20 is more conveniently and quickly installed.

Further, the fine adjustment rods 40 may be multiple, each fine adjustment rod 40 corresponds to one fine adjustment hole 16, that is, the number of the fine adjustment holes 16 is multiple, the fine adjustment holes 16 are evenly distributed along the circumferential direction of one side of the valve body 10, and multiple sets of the fine adjustment rods 40 are inserted into the fine adjustment holes 16 in a one-to-one correspondence manner and abut against the valve seat assembly 20.

Preferably, the fine adjustment rod 40 is a screw.

At least one fine adjustment hole 16 is formed between two adjacent adjusting holes 14, that is, at least one fine adjustment rod 40 is arranged between two adjacent sets of adjusting assemblies 30. It will be appreciated that by arranging the adjustment assembly 30 and the vernier rod 40 in this manner, the accuracy of the adjustment of the seat assembly 20 may be further improved.

In the present embodiment, there is one fine adjustment hole 16 between two adjacent adjustment holes 14, i.e., each fine adjustment hole 16 is disposed adjacent to two adjustment holes 14. Of course, in other embodiments, 2 or 3 unequal fine adjustment holes 16 may be provided between two adjacent adjustment holes 14 according to practical situations.

As shown in fig. 3 and 4, the eccentric half ball valve 100 further includes a valve core assembly 50, and the valve core assembly 50 is rotatably installed in the valve cavity 13 and can be in sealing fit with the valve seat assembly 20 to control the opening/closing of the eccentric half ball valve 100.

Preferably, the valve core assembly 50 is matched with the sealing seat 22 to seal the valve port 212, so as to control the opening and closing of the valve port 212, thereby achieving the purpose of controlling the opening/closing of the eccentric half-ball valve 100.

Specifically, the valve core assembly 50 includes a valve rod 51 and a valve core 52, the valve rod 51 is installed inside the valve body 10, an axis of the valve rod 51 is perpendicular to a medium flowing direction in the eccentric half ball valve, the valve core 52 is vertically installed on the valve rod 51, and the valve core 52 can rotate relative to the valve rod 51 from the vertical direction to the medium flowing direction, so as to cooperate with the valve seat assembly 20 to seal the eccentric half ball valve 100, that is, control the opening/closing of the eccentric half ball valve 100.

Referring to fig. 4, the eccentric half ball valve 100 further includes a limiting member 60, and the limiting member 60 is installed inside the valve body 10 and located below the motion trajectory of the valve element 52, so as to contact with the valve element 52 to limit the motion of the valve element 52 when the valve element 52 rotates to be in fit with and seal with the valve seat assembly 20.

It can be understood that the limiting member 60 can limit the movement of the valve core assembly 50, so as to prevent the eccentric half-ball valve from being excessively closed to damage the sealing surface on the valve core assembly 50 and/or the valve seat assembly 20, ensure the sealing gap to be uniform from top to bottom, and prevent the easy sealing failure when being pressed; secondly, when the eccentric hemisphere valve is closed, the limiting member 60 can play a certain supporting role on the valve core assembly 50, and the deformation of the connection point of the valve core assembly 50 and the valve body 10 due to stress is avoided.

As shown in fig. 7, the present invention further provides an eccentric hemisphere valve assembling method 200, where the eccentric hemisphere valve assembling method 200 is implemented based on the structure of the eccentric hemisphere valve 100, and the assembling method 100 includes the following steps:

s1 placing the valve seat assembly 20 inside the valve body 10;

s2 passing one end of the adjusting component 30 through the adjusting hole 14 and connecting with the valve seat component 20; and

s3 adjusting the adjusting assembly 30 and driving the valve seat assembly 20 to move in the valve body 10, and sealing between the valve seat assembly 20 and the valve body 10.

It can be understood that, the assembly method 200 can accurately install the valve seat assembly 20 in the valve body 10 under the action of the adjusting assembly 30, so as to ensure that the gap between the valve seat assembly 20 and the valve body 10 is uniform, and reduce the assembly difficulty; moreover, the position of the valve seat assembly 20 in the valve body 10 can be adjusted through the adjusting assembly 30, and when the pressure test leak point test of the eccentric half-ball valve is carried out, the displacement of the valve seat assembly 20 in the valve body 10 can be adjusted through the adjusting assembly 30, so that the leak point is blocked.

Further, between the steps S1 and S2, the assembling method 100 further includes the following steps:

s11, placing the check ring 23 into the valve body 10;

s12 rotates the retainer ring 23 and causes the retainer ring 23 to snap into the mounting groove 131.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.