WO2019056158A1

WO2019056158A1 - Fast-connect ball valve

Info

Publication number: WO2019056158A1
Application number: PCT/CN2017/102171
Authority: WO
Inventors: 陈保同
Original assignee: 东莞好奇智能科技有限公司
Priority date: 2017-09-19
Filing date: 2017-09-19
Publication date: 2019-03-28
Also published as: CN111465796A

Abstract

A fast-connect ball valve (60). The ball valve (60) is provided with preinstalled fasteners (30). The ball valve (60) can be installed by means of plastic deformation of the fasteners (30). The ball valve (60) is specially suitable for installation at a position where a space is narrow and an installation tool is not conveniently used. The connection of the ball valve (60) is fast and convenient, and the sealing is reliable.

Description

Quick connect ball valve

Technical field

[0001] The present invention relates to the field of fluid connectors, and in particular to a connection device for dispensing fluid from a main line to a branch. The invention also relates to a ball valve.

Background technique

[0002] Gas and liquid conveying pipelines are widely used in petroleum, chemical and other industrial fields. In production applications, the fluid in the main pipe or vessel often needs to be connected to multiple branch lines to distribute fluids to meet industrial needs, to achieve sample testing, fluid performance testing, and heat dissipation. The gas source distributor is the most widely used in the industrial field. Chinese patent CN102788246A discloses a gas source distributor, which is a centrally connected starting instrument connected to the gas main pipe, which can be conveniently controlled. The continuity of each pipeline. The Chinese patent CN104180115A considers that the connection method of the prior patent causes the container wall to be too thick, which causes the entire device to be cumbersome, and thus an improvement has been made to invent a thin-wall type fluid splitter. The fluid shunt disclosed in Chinese Patent No. CN104180115A has a thin wall and a light weight, but the manufacturing process is poor. In this device, the insertion pin must be carried out from the inner end of the container, and after the insertion is completed, the container is further processed. The welding of the end caps, the assembly process, the assembly speed is slow, and finally the welding is easily broken, resulting in seal failure and low yield.

technical problem

[0003] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a gas splitter which can achieve a firm connection and a stable seal by using a thin-walled container and a snap-fit connection, and the apparatus is fast in processing.

Problem solution

Technical solution

[0004] A gas flow divider comprising a vessel, a plurality of ball valves, a plurality of seals; the vessel comprising at least one fluid main passage, further comprising a circular hole disposed on the cylindrical wall of the vessel and connected to the joint; ball valve control The bypass of the branch, each ball valve comprises a valve body, a spherical valve core, a first valve seat assembly, a second valve seat assembly, a fastening component and a valve stem assembly, the valve body is substantially tubular, and the fastening member is sequentially installed inside. , the first valve seat assembly, The spherical valve core and the second valve seat assembly, the valve stem assembly is connected from the outlet hole of the valve body to the spherical valve core, and the valve body has an annular platform inside, and the fastening component is fixed in the valve seat by the first valve seat assembly, The first valve seat assembly and the second valve seat assembly form a pair of sealing pairs acting on the spherical valve core, and the spherical valve core can be rotated between the sealing pair under the driving of the valve stem assembly to realize the valve opening and closing; Extending from the first end of the valve body, the first end surface of the valve body is flat, and the end surface has an annular groove surrounding the fastening component; the fastening component comprises a plastic deformation part, a thin wall part, an outer edge part, a protrusion and a center hole, the center hole of the fastening member passes through the plastic deformation portion, the thin portion and the outer edge portion; the female thread portion and the thin portion of the fastening member sequentially pass through the sealing member and the container round hole, in the axial direction, Under the action of an external force in the opposite direction, the thin-walled portion is plastically collapsed and bulged radially outward toward the thin-walled portion to form a protrusion, so that the lower edge of the outer edge portion of the fastening member abuts against the ring-shaped inner portion of the valve body. On the platform, the protrusion abuts against the inner wall of the container surrounding the circular hole to realize the valve body An axial clamping is formed with the container and the seal is enclosed within the recess.

[0005] Further, the thickness of the thin portion of the fastening member is smaller than the thickness of the plastic deformation portion.

[0006] Further, the outer diameter of the thin portion is the same as the outer diameter of the plastic deformation portion, and the diameter of the central hole before the plastic deformation of the thin portion is larger than the diameter of the plastic deformation portion. With this configuration, in the plastic deformation, the thin portion is more likely to bulge radially outward to form a projection without collapsing radially inwardly and obstructing the center hole as the flow passage.

[0007] Further, in order to facilitate the insertion of the circular hole assembly, the front end of the plastic deformation portion is in a folded shape.

Further, in order to improve the friction between the fastening member and the inner wall of the container, the fastening member is prevented from being loosened in the axial direction, and the outer wall of the thin portion is provided with a grain or a protrusion to increase the friction between the protrusion and the inside of the container.

[0009] Further, in order to improve the friction between the fastening component and the valve body, the valve body and the fastening component are prevented from loosening, the lower edge of the outer edge portion is provided with a grain or a protrusion, and the annular platform is also provided with a grain or a convex shape. Start.

[0010] The gas flow splitter also includes a bleed port for cleaning that is disposed on the container.

[0011] Further, the first valve seat assembly includes a first locking member and a first spherical pair, the first locking member is screwed inside the valve body, and the upper edge of the fastening member is pressed, and the first spherical pair is located Between the spherical valve core and the first locking member; the second valve seat assembly includes a second locking member and a second spherical pair, the second locking member is screwed inside the valve body, and the second spherical pair is located at the spherical valve core and Between the second locking members.

Advantageous effects of the invention

Beneficial effect

[0012] The sealing method of the valve and the container in the invention is reliable and reliable, and the quick connection can be realized; The connection between the head and the container takes the form of snapping inside the container, and the snap fit only needs to be operated outside the complete container.

Brief description of the drawing

DRAWINGS

1 is a structural view of a gas splitter;

2 is an exploded view of a gas splitter;

Figure 3 is a cross-sectional view of the ball valve;

[0016] FIG. 4 is an exploded view of the main components of the ball valve;

Figure 5 is a cross-sectional view of the first type of fastener;

Figure 6 is a cross-sectional view of a second fastening member;

[0019] Figure 7 is a schematic view of the installation of the valve branch 1;

[0020] FIG. 8 is a schematic view of the valve branch installation 2;

[0021] Figure 9 is a schematic diagram of the installation of the valve branch 3;

10 is a partial cross-sectional view of a gas splitter.

BEST MODE FOR CARRYING OUT THE INVENTION

[0023] In order to facilitate the understanding of the present invention, the specific embodiments of the present invention and the assembly process will be described in detail below with reference to the accompanying drawings.

Embodiments of the invention

1 to 10 are related drawings of a gas splitter. a gas splitter comprising a vessel 10, a plurality of ball valves, a plurality of seals; the vessel 10 comprising a cylindrical intermediate section 11, a gathered front section 12, a gathered rear section 13, the front section 12 and the rear section 13 passing through the weld 16 and The weld bead 17 is integrally connected and forms a container having a cavity 19; the front section 12 has a fluid main passage 14 for externally connecting the main pipe, and the rear section 13 has a discharge port 15 on the cylindrical wall of the middle section 1 a circular hole 18 connected by a joint; a ball valve controls the opening and closing of the branch, each ball valve includes a valve body, a spherical valve core, a first valve seat assembly, a second valve seat assembly, a fastening member and a valve stem assembly, and the valve body is basically Tubular, the interior is sequentially fitted with a fastening member, a first valve seat assembly, a spherical valve core, and a second valve seat assembly. The valve stem assembly is connected from the outlet hole of the valve body to the spherical valve core, and the valve body has an annular platform inside, and the fastening component is fixed in the valve seat by the first valve seat assembly, and the first valve seat assembly and the second valve seat The assembly constitutes a pair of sealing jaws|J, acting on the spherical valve core, and the spherical valve core can be rotated between the sealing pair under the driving of the valve stem assembly to realize the valve opening and closing; the fastening component is from the first end of the valve body Extending out, the first end face of the valve body is flat

The end surface has an annular groove around the fastening member; the fastening member 30 includes a plastic deformation portion 33, a thin portion 32, an outer edge portion 31, a protrusion portion 322 and a central hole, and the outer diameter of the thin portion 32 is The external diameter of the plastic deformation portion 33 is the same, the diameter of the central hole before the deformation of the thin portion 32 is larger than the diameter of the female thread portion, and the wall thickness of the thin portion 32 is smaller than the thickness of the plastic deformation portion 3 3; the outer wall of the thin portion 32 is provided with the drawing pattern 321 In order to improve the friction between the fastening member and the inner wall of the container, the lower edge 311 of the outer edge portion 31 is provided with a grain to improve the friction between the fastening member and the joint, and the front end 333 of the plastic deformation portion is in a folded shape, and the center of the fastening member 30 The hole penetrates the plastic deformation portion 33, the thin portion 32 and the outer edge portion 31; the plastic deformation portion 33 and the thin portion 32 of the fastening member 30 sequentially pass through the sealing member 40 and the container circular hole 18 in the axial direction and the opposite direction Under the external force, the thin portion 32 is plastically collapsed and bulged radially outward toward the thin portion to form a protrusion 322, so that the lower edge 311 of the outer edge portion 31 of the fastening member abuts against the ring inside the valve body. On the platform 24, the protrusion 322 abuts against the inner wall of the container surrounding the circular hole 18, realizing the valve Forming an axial clamping with the container 10, the fastening member 30 is plastically deformed, and the container wall is also plastically deformed, so that the outer wall of the container 10 is attached to the first end surface 23 of the valve body, and the sealing member 40 is enclosed in the groove 26. .

Figures 7-10 illustrate the valve branch mounting of a gas splitter. The mounting process requires a clamping device, the mandrel, which can pass through the flow path of the ball valve shown in Figure 3 and has a streamlined enlarged portion 51. The body of the mandrel 50 can pass through the flow path of the entire valve branch, but the enlarged portion 51 can pass through an area other than the female thread 332 of the fastening member. Firstly, the main body of the mandrel 50 is passed through the flow path of the entire ball valve, and then the enlarged portion 51 and the fastening member 30 are passed through the sealing member 40 and the hole 18, and the force F1 is applied to the top. On the door 60, the mandrel 50 is extracted by F2, and the force is transmitted to the upper edge 312 of the fastening member through the ball valve 60, and the same expansion portion 51 is forcibly squeezed into the plastic deformation portion 33 of the fastening member, so that the buckle The fitting member 30 is axially compressed, and the thin portion 32 starts to bulge radially outward to form a projection 322. As the forces F1 and F2 are gradually increased, the projection 322 abuts against the inner wall of the container 10 and presses the container to fit. On the end face 23 of the joint 20, as the forces F1, F2 continue to increase, the expansion portion 51 damages and squeezes the female thread 332 of the plastic deformation portion 33, and finally the expansion portion 51 withdraws from the valve branch. This type of installation causes permanent damage to the female thread of the fastener, but does not adversely affect the strength of the joint; the female thread is squeezed smoothly, and the inner diameter of the plastic deformation portion 33 can be enlarged to improve the fluid circulation energy. Force.

[0026] FIG. 6 shows a fastening member of another structure. The fastening member 31' is different from the fastening member 30 shown in FIG. 5 in that the plastic deformation portion 33' does not contain a thread, but a plurality of The annular groove 332', the annular groove 332' is easy to control and adjust with respect to the female thread 33 2, and the annular groove plastic deformation is not easy to partially fall off, chip off, and does not pollute the gas splitter.

[0027] The ball valve of the present invention, when connected to an external device, saves installation space, eliminates the need to rotate the ball valve, and does not need to rotate an additional coupling nut at the joint. This ball valve is especially suitable for applications where the operating space is small and it is not convenient to use the installation tool. As long as the ball valve can be inserted into the target position, a sealed connection can be achieved.

Claims

Claim

The quick connect ball valve is characterized in that it comprises: a valve body, a spherical valve core, a first valve seat assembly, a second valve seat assembly, a fastening component and a valve stem assembly, the valve body is substantially tubular, and a fastening member is sequentially installed inside, The first valve seat assembly, the spherical valve core and the second valve seat assembly, the valve stem assembly is connected from the outlet hole of the valve body to the spherical valve core, and the valve body has an annular platform inside, and the fastening component is fixed by the first valve seat assembly. In the valve seat, the first valve seat assembly and the second valve seat assembly form a pair of sealing pairs, which act on the spherical valve core, and the ball valve core can be rotated between the sealing pair under the driving of the valve stem assembly. The valve is opened and closed; the fastening member extends from the first end of the valve body, and the first end surface of the valve body is flat, and the end surface has an annular groove surrounding the fastening member; the fastening component comprises a plastic deformation portion and a thin wall a portion, an outer edge portion, a protrusion portion and a center hole, the center hole of the fastening member passes through the plastic deformation portion, the thin portion and the outer edge portion; the lower edge of the outer edge portion of the fastening member is fixed to the top, the plastic deformation portion, the thin wall The portion extends to the outside of the first end face.

The quick connect ball valve according to claim 1, wherein: the thin portion of the engaging member has a wall thickness smaller than a wall thickness of the plastic deformation portion.

The quick connect ball valve according to claim 1, wherein: the outer diameter of the thin portion is the same as the outer diameter of the plastic deformation portion, and the diameter of the central hole before the plastic deformation of the thin portion is larger than the diameter of the plastic deformation portion. The quick connect ball valve according to claim 1, wherein: the front end of the plastic part of the fastening member is gathered.

A quick connect ball valve according to claim 1, wherein: the outer wall of the thin portion is provided with a grain or a projection.

The quick connect ball valve according to claim 5, wherein the lower edge of the outer edge portion is provided with a grain or a protrusion, and the annular platform is also provided with a grain or a protrusion.

The quick connect ball valve according to claim 1, wherein: the lower edge of the outer edge portion is provided with a grain or a protrusion, and the annular platform is also provided with a grain or a protrusion.

The quick connect ball valve of claim 1 wherein: the plastic deformation portion has a female thread that is plastically deformable.

The quick connect ball valve of claim 1 wherein: the plastic deformation portion has a plurality of annular grooves that have been plastically deformed.