阅读说明：本技术 一种蝶阀及其蝶阀阀座 (Butterfly valve and butterfly valve seat thereof ) 是由 于洪香 于 2019-10-16 设计创作，主要内容包括：本发明公开了一种蝶阀及其蝶阀阀座,属于阀门技术领域,所述蝶阀包括手柄、阀杆和阀体,所述手柄与阀杆固定连接,所述阀杆插接在阀体内部,所述阀杆贯穿平面偏心蝶板中轴线位置,所述偏心蝶板外部安装有PTFE唇形阀座,所述阀体内部填充有阀体嵌件,所述阀体嵌件位于PTFE唇形阀座一侧,所述阀杆外部贯穿连接有止推垫圈,所述止推垫圈位于PTFE唇形阀座上方,所述阀杆与阀体上表面连接处填充有V型填料。本发明通过在阀体内部安装PTFE唇形阀座,并且在阀体与PTFE唇形阀座之间安装阀体嵌件,增强了PTFE唇形阀座耐磨损和耐腐蚀性能,延长使用寿命；阀杆转动更加省力,操作方便；对阀门内部的结构进行改进,提高使用效果。(The invention discloses a butterfly valve and a butterfly valve seat thereof, belonging to the technical field of valves, wherein the butterfly valve comprises a handle, a valve rod and a valve body, the handle is fixedly connected with the valve rod, the valve rod is inserted in the valve body, the valve rod penetrates through the axis position of a plane eccentric butterfly plate, a PTFE (polytetrafluoroethylene) lip-shaped valve seat is installed outside the eccentric butterfly plate, a valve body insert is filled in the valve body, the valve body insert is positioned on one side of the PTFE lip-shaped valve seat, a thrust washer is connected outside the valve rod in a penetrating manner, the thrust washer is positioned above the PTFE lip-shaped valve seat, and V-shaped filler is filled at the joint. According to the invention, the PTFE lip-shaped valve seat is arranged in the valve body, and the valve body insert is arranged between the valve body and the PTFE lip-shaped valve seat, so that the wear resistance and corrosion resistance of the PTFE lip-shaped valve seat are enhanced, and the service life is prolonged; the valve rod is more labor-saving to rotate, and the operation is convenient; the structure inside the valve is improved, and the using effect is improved.)

1. The utility model provides a butterfly valve and butterfly valve disk seat thereof, its characterized in that, the butterfly valve includes handle, valve rod and valve body, handle and valve rod fixed connection, the valve rod is pegged graft inside the valve body, the valve rod runs through the eccentric butterfly plate axis position in plane, eccentric butterfly plate externally mounted has PTFE lip disk seat, the inside packing of valve body has the valve body inserts, the valve body inserts is located PTFE lip disk seat one side, the outside through connection of valve rod has thrust washer, thrust washer is located PTFE lip disk seat top, valve rod and valve body upper surface connection department pack have the V type to pack, the outside cover of valve rod is equipped with stainless steel bearing.

2. The butterfly valve and its valve seat according to claim 1, wherein the eccentric butterfly plate has a hollow cavity on its surface, and the valve stem extends through the hollow cavity.

3. A butterfly valve and its valve seat as claimed in claim 1, wherein the stainless steel bearing is located between the V-shaped packing and the thrust washer.

4. A butterfly valve and its valve seat according to claim 1, wherein a sealing washer is detachably connected to one end of the valve body by means of a bolt, and the sealing washer is located on one side of the PTFE lip valve seat.

5. A butterfly valve and its valve seat according to claim 1, wherein the bottom end of the valve body is mounted with a base, and the bottom end of the valve rod is inserted into the base and rotatably connected.

6. A butterfly valve and its valve seat as claimed in claim 1, wherein the V-shaped packing is PTFE and the liner of the stainless steel bearing is PTFE.

Technical Field

The invention relates to the technical field of valves, in particular to a butterfly valve and a butterfly valve seat thereof.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

1. The existing valve seat has poor wear resistance and corrosion resistance and short service life; 2. the valve stem is relatively laborious in this rotation; 3. the overall structure wear resistance of the valve is poor, and the use effect is not good. Therefore, a butterfly valve and a butterfly valve seat thereof are provided.

Disclosure of Invention

The invention provides a butterfly valve and a butterfly valve seat thereof, aiming at enhancing the wear resistance and corrosion resistance of a PTFE lip-shaped valve seat and prolonging the service life by installing the PTFE lip-shaped valve seat in a valve body and installing a valve body insert between the valve body and the PTFE lip-shaped valve seat; the valve rod is more labor-saving to rotate, and the operation is convenient; the structure inside the valve is improved, and the using effect is improved.

The specific technical scheme provided by the invention is as follows:

the invention provides a butterfly valve and a butterfly valve seat thereof, wherein the butterfly valve comprises a handle, a valve rod and a valve body, the handle is fixedly connected with the valve rod, the valve rod is inserted in the valve body, the valve rod penetrates through the axis position of a plane eccentric butterfly plate, a PTFE (polytetrafluoroethylene) lip-shaped valve seat is installed outside the eccentric butterfly plate, a valve body insert is filled in the valve body, the valve body insert is positioned at one side of the PTFE lip-shaped valve seat, a thrust washer is connected outside the valve rod in a penetrating manner and positioned above the PTFE lip-shaped valve seat, V-shaped packing is filled at the joint of the valve rod and the upper surface of the valve body, and a stainless.

Optionally, a hollow cavity is formed in the surface of the eccentric butterfly plate, and the valve rod penetrates through the hollow cavity.

Optionally, the stainless steel bearing is located between the V-shaped packing and the thrust washer.

Optionally, one end of the valve body is detachably connected with a sealing washer through a bolt, and the sealing washer is located on one side of the PTFE lip-shaped valve seat.

Optionally, a base is installed at the bottom end of the valve body, and the bottom end of the valve rod is inserted into the base and is connected in a rotating mode.

Optionally, the V-shaped filler is made of PTFE, and the liner of the stainless steel bearing is made of PTFE.

The invention has the following beneficial effects:

1. according to the invention, the PTFE lip-shaped valve seat is arranged in the valve body, and the valve body insert is arranged between the valve body and the PTFE lip-shaped valve seat, so that the wear resistance and corrosion resistance of the PTFE lip-shaped valve seat are enhanced, and the service life is prolonged.

2. The valve rod of the invention is an integral single-diameter shaft, the deviation is reduced to the minimum, the use is more labor-saving, and the sealing performance is improved.

3. The stainless steel bearing with the PTFE lining has high corrosion resistance and self-lubrication, the thrust washer keeps the center position of the butterfly plate, the valve body insert is used for fixing the PTFE lip-shaped valve seat to prevent the PTFE lip-shaped valve seat from being worn and corroded, the rotation of the plane eccentric butterfly plate does not take the valve seat as a fulcrum, the torque and the wear of the PTFE lip-shaped valve seat are reduced, the integral structure is improved, the use effect is improved, and the service life is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of an overall structure of a butterfly valve and a butterfly valve seat thereof according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of positions of a PTFE lip valve seat, a planar eccentric butterfly plate and a valve body of a butterfly valve and a butterfly valve seat thereof according to an embodiment of the invention;

fig. 3 is a schematic structural view of a plane eccentric butterfly plate of a butterfly valve and a butterfly valve seat thereof according to an embodiment of the invention.

In the figure: 1. a handle; 2. a V-shaped filler; 3. a thrust washer; 4. a planar eccentric butterfly plate; 401. a hollow cavity; 5. a PTFE lip valve seat; 6. a sealing gasket; 7. a valve body insert; 8. a base; 9. a valve stem; 10. a valve body; 11. stainless steel bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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.

A butterfly valve and its valve seat according to an embodiment of the present invention will be described in detail with reference to fig. 1 ~ and fig. 3.

Referring to fig. 1, 2 and 3, the butterfly valve and the butterfly valve seat thereof provided by the embodiment of the invention include a handle 1, a valve rod 9 and a valve body 10, the handle 1 is fixedly connected with the valve rod 9, the valve rod 9 is inserted into the valve body 10, the valve rod 9 penetrates through the axis position of a plane eccentric butterfly plate 4, a PTFE lip valve seat 5 is installed outside the eccentric butterfly plate 4, a valve body insert 7 is filled inside the valve body 10, the valve body insert 7 is located on one side of the PTFE lip valve seat 5, a thrust washer 3 is connected outside the valve rod 9 in a penetrating manner, the thrust washer 3 is located above the PTFE lip valve seat 5, a V-shaped packing 2 is filled at the connection position of the upper surface of the valve rod 9 and the valve body 10, and a stainless steel bearing 11 is sleeved outside the valve rod.

Referring to fig. 1 and 3, a hollow cavity 401 is formed in the surface of the eccentric butterfly plate 4, the valve rod 9 penetrates through the hollow cavity 401, and the rotation of the eccentric butterfly plate does not use the valve seat as a fulcrum, so that the torque and the valve seat abrasion are reduced.

Referring to fig. 1, the stainless steel bearing 11 is positioned between the V-shaped packing 2 and the thrust washer 3 to improve sealability and wear resistance.

Referring to fig. 1, one end of the valve body 10 is detachably connected with a sealing gasket 6 through a bolt, and the sealing gasket 6 is located on one side of the PTFE lip valve seat 5, so that the sealing performance of the pipeline connection is improved.

Referring to fig. 1, a base 8 is installed at the bottom end of the valve body 10, and the bottom end of the valve rod 9 is inserted into the base 8 and is connected in a rotating manner, so that a supporting force is provided for the valve rod through the base.

Referring to fig. 1, the V-shaped packing 2 is made of PTFE, and the liner of the stainless steel bearing 11 is made of PTFE.

In summary, the following steps: the embodiment of the invention provides a butterfly valve and a butterfly valve seat thereof.A PTFE lip-shaped valve seat is arranged in a valve body, and a valve body insert is arranged between the valve body and the PTFE lip-shaped valve seat, so that the wear resistance and corrosion resistance of the PTFE lip-shaped valve seat are enhanced, and the service life is prolonged; the valve rod is more labor-saving to rotate, and the operation is convenient; the structure inside the valve is improved, and the using effect is improved.

The butterfly valve and the butterfly valve seat thereof comprise a handle 1, a V-shaped filler 2, a thrust washer 3, a plane eccentric butterfly plate 4, a hollow cavity 401, a PTFE lip-shaped valve seat 5, a sealing washer 6, a valve body insert 7, a base 8, a valve rod 9, a valve body 10 and a stainless steel bearing 11, wherein the components are all universal standard components or components known by those skilled in the art, and the structure and the principle of the butterfly valve are known by the technical manual or conventional experimental methods.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.