CN212004356U

CN212004356U - Wear-resistant powder fluorine-lined ball valve

Info

Publication number: CN212004356U
Application number: CN202020508875.3U
Authority: CN
Inventors: 朱孝有
Original assignee: Zhejiang Yfm Valve Co ltd
Current assignee: Zhejiang Yfm Valve Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-11-24
Anticipated expiration: 2030-04-09

Abstract

The utility model provides a wear-resisting powder fluorine lining ball valve, including valve body, disk seat, spheroid, valve rod, handle, packing subassembly and valve gap, the valve rod runs through the valve body setting, valve gap and valve body fixed connection, packing subassembly locate between valve rod and the valve gap, the valve rod locate inside one side of valve body and be equipped with the butt portion of restriction valve rod from the roll-off of valve gap department, the setting of butt portion makes the valve rod nearly impossible departure from the valve body. In order to ensure that the valve can be suitable for corrosive media, fluorine lining layers are arranged on the inner wall of the valve body, the inner wall of the valve cover, the outer part of the valve rod and the outer part of the ball body. The valve rod adopts the flip-chip design, and when the valve pocket rose abnormally, the valve rod can not fly out yet, and spheroid and valve rod surface are equipped with dovetail and through-hole, can make firm and the metalwork of fluorine material combine, guarantee the life of valve.

Description

Wear-resistant powder fluorine-lined ball valve

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a ball valve.

Background

The wear-resistant powder fluorine-lined ball valve is specially used for conveying and cutting off powder media, and is especially suitable for corrosive and abrasive media (such as lithium hexafluorophosphate powder) through the structural design of internal fluorine lining.

The existing valve rod is generally inserted into the valve body from the outside of the valve body, and when the valve cavity is abnormally pressurized, the valve rod can fly out of the valve body, so that the valve is damaged, and surrounding personnel and articles are damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a ball valve that valve rod is difficult for departure valve body.

The utility model discloses a realize through following technical scheme:

the utility model discloses a solve the difficult departure problem of valve rod, with wear-resisting powder lining fluorine ball valve design for including valve body, disk seat, spheroid, valve rod, handle, packing subassembly and valve gap, the valve rod runs through the valve body setting, valve gap and valve body fixed connection, packing subassembly locate between valve rod and the valve gap, the valve rod locate inside one side of valve body and be equipped with the butt portion of restriction valve rod from the roll-off of valve gap department, the setting of butt portion makes the valve rod nearly impossible departure from the valve body. In order to ensure that the valve can be suitable for corrosive media, fluorine lining layers are arranged on the inner wall of the valve body, the inner wall of the valve cover, the outer part of the valve rod and the outer part of the ball body. The valve rod adopts the flip-chip design, and when the valve pocket rose abnormally, the valve rod can not fly out yet, and spheroid and valve rod surface are equipped with dovetail and through-hole, can make firm and the metalwork of fluorine material combine, guarantee the life of valve.

Preferably, the abutting part is a protrusion arranged along the radial direction of the valve rod.

Further in order to ensure the sealing effect of the packing assembly, the packing assembly comprises a lower packing, an upper packing, a packing press ring and a packing press plate which are sequentially arranged from bottom to top, wherein at least part of the outer diameter of the upper end of the lower packing is gradually reduced from bottom to top to form a lower inclined plane, at least part of the inner diameter of the lower end of the corresponding upper packing is gradually reduced from top to bottom to form an upper inclined plane, the upper packing is directly sleeved on the lower packing, and the upper packing and the lower packing are in contact with each other through the upper inclined plane and the lower inclined plane. The packing adopts a conical design, has the advantages of large sealing area and light torque, can easily obtain good sealing effect through the locking force of the packing gland, and effectively prevents the leakage of a medium from the position of the valve rod.

In order to guarantee to pack and can rotate relatively between clamping ring and the last filler, will last filler upper end circumference be equipped with the annular, pack the clamping ring lower extreme and be equipped with the card and go into the joint portion of packing in the annular on going into, packing clamp plate and packing clamping ring butt, the handle lower extreme be equipped with extend to with the extension of last filler butt, handle and valve rod linkage cooperation.

In order to ensure the sealing performance of the packing, the packing pressure plate is fixedly connected with the valve body.

In order to further ensure the sealing effect between the valve seat and the valve body of the valve, an inward concave structure is arranged on the valve seat sealing surface of the valve seat and the valve body sealing surface, and the inward concave structure is a U-shaped groove. The valve seat is made of imported high-quality PTFE materials, the sealing surface of the valve seat is provided with the sealing groove, abrasion of impurities between the ball body and the valve seat to the sealing surface can be effectively reduced, the valve seat is provided with the U-shaped groove, and the valve can achieve good sealing effect through the pretightening force of the valve body and the valve cover. When the valve is used for a long time, the sealing surface of the valve seat or the ball body is abraded, and the pretightening force of the valve seat is released, so that the sealing surface can be effectively compensated, and the sealing effect of the valve is ensured.

In order to facilitate the maintenance of the valve, the ball body and the valve rod are in a split structure. The ball body can be rapidly disassembled and maintained, and the ball body is suitable for the working condition that the valve needs to be disassembled and maintained regularly.

In order to prevent the valve from being operated by mistake, an opening position locking mechanism and/or a closing position locking mechanism is arranged between the handle and the packing gland. The opening position locking mechanism and the closing position locking mechanism are lock holes respectively formed in the packing gland and the handle, and the handle is locked at a set position by the lock penetrating through the lock holes. The handle and the packing gland are correspondingly provided with lock holes, and the lock holes are aligned when the valve is opened and closed, so that the valve can be locked very conveniently, the valve is prevented from being operated by mistake, and the use safety of a user is ensured.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a schematic structural diagram of the packing assembly of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples.

Examples

The wear-resistant powder fluorine-lined ball valve shown in fig. 1 and 2 comprises a valve body 1, a valve seat 2, a ball body 3, a valve rod 5, a handle 10, a packing assembly and a valve cover 4, wherein the valve rod 5 penetrates through the valve body 1, the valve cover 4 is fixedly connected with the valve body 1, the packing assembly is arranged between the valve rod 5 and the valve cover 4, the valve rod 5 is arranged on one side inside the valve body 1 and is provided with a butting part for limiting the valve rod 5 to slide out from the valve cover 4, the butting part is arranged so that the valve rod 5 can hardly fly out of the valve body 1, the valve cover is arranged on one side of the valve body in the embodiment and is provided with a medium inlet or outlet, one end opening part of the valve body connected with the valve cover is large in diameter and can only. In order to enable the valve to be suitable for corrosive media, fluorine lining layers are arranged on the inner wall of the valve body 1, the inner wall of the valve cover 4, the outer part of the valve rod 5 and the outer part of the ball body 3, and the fluorine lining layers are made of full-lining polytetrafluoroethylene materials. The valve rod 5 adopts the flip-chip design, when the valve cavity is abnormally boosted, the valve rod 5 can not fly out, the dovetail groove and the through hole are formed in the surfaces of the ball body 3 and the valve rod 5, the fluorine material can be firmly combined with the metal piece, and the service life of the valve is ensured.

Preferably, the abutting portion is a projection provided along a radial direction of the valve stem 5.

Further in order to ensure the sealing effect of the packing assembly, the packing assembly comprises a lower packing 6, an upper packing 7, a packing press ring 8 and a packing press plate 9 which are sequentially arranged from bottom to top, wherein at least part of the outer diameter of the upper end of the lower packing 6 is gradually reduced from bottom to top to form a lower inclined plane, at least part of the inner diameter of the lower end of the corresponding upper packing 7 is gradually reduced from top to bottom to form an upper inclined plane, the upper packing 7 is directly sleeved on the lower packing 6, and the upper packing 7 is in contact with the lower inclined plane through the upper inclined plane with the lower packing 6. The packing adopts the toper design, has that sealing area is big, the light advantage of moment of torsion, and locking force through gland can easily obtain good sealed effect, effectively stops the medium from leaking from valve rod 5 position.

In order to guarantee to pack and can rotate relatively between clamping ring 8 and the last 7 that pack, will last 7 upper end circumference of packing be equipped with the annular, pack 8 lower extremes of clamping ring and be equipped with the card and go into the joint portion of packing in the 7 annular of going into, packing clamp plate 9 and the 8 butt of packing clamping ring, 10 lower extremes of handle be equipped with extend to with last extension of 7 butts of packing, handle 10 and valve rod 5 linkage cooperation.

In order to ensure the sealing performance of the packing, the packing pressure plate 9 is fixedly connected with the valve body 1.

In order to further ensure the sealing effect between the valve seat 2 of the valve and the valve body 1, an inward concave structure is arranged on the sealing surface of the valve seat 2 of the sealing surface of the valve seat 2 and the valve body 1, and the inward concave structure is a U-shaped groove. The valve seat 2 is made of imported high-quality PTFE materials, the sealing surface of the valve seat 2 is provided with a sealing groove, the abrasion of impurities on the sealing surface between the ball body 3 and the valve seat 2 can be effectively reduced, the valve seat 2 is provided with a U-shaped groove, and the valve can achieve a good sealing effect through the pretightening force of the valve body 1 and the valve cover 4. When the valve is used for a long time, the sealing surface of the valve seat 2 or the sealing surface of the ball body 3 is abraded, and at the moment, the pretightening force of the valve seat 2 is released, so that the sealing surface can be effectively compensated, and the sealing effect of the valve is ensured.

The ball 3 and the valve rod 5 are separated for convenient maintenance of the valve. The ball body 3 can be rapidly disassembled and maintained, and the valve disassembling and maintaining device is suitable for the working condition that the valve is required to be disassembled and maintained regularly.

In order to prevent the valve from being operated by mistake, an open-position closure mechanism and/or a closed-position closure mechanism is provided between the handle 10 and the gland. The open position locking mechanism and the close position locking mechanism are locking holes (not shown in the figure) respectively arranged on the packing gland and the handle 10, in the embodiment, one locking hole is arranged on the handle, two locking holes are arranged on the packing gland, the locking holes respectively correspond to the handle locking hole position in the fully open state of the valve and the handle locking hole position in the closed state of the valve, and the handle 10 can be locked at the set position by passing through the locking holes through the lock in the fully open state or the closed state of the valve. The handle 10 and the packing gland are correspondingly provided with lock holes, and the lock holes at the opening position and the closing position are aligned, so that the valve can be locked very conveniently, the valve cannot be operated by mistake, and the use safety of a user is ensured.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. Wear-resisting powder lining fluorine ball valve, including valve body, disk seat, spheroid, valve rod, handle, packing subassembly and valve gap, the valve rod runs through the valve body setting, and valve gap and valve body fixed connection, packing subassembly locate between valve rod and the valve gap, its characterized in that: the valve body inner wall, the valve cover inner wall, the valve rod outside and the ball outside are all provided with fluorine lining layers, the valve rod is arranged on one side inside the valve body and is provided with a butting part for limiting the valve rod to slide out of the valve cover.

2. The wear-resistant powder fluorine-lined ball valve of claim 1, wherein: the abutting part is a bulge arranged along the radial direction of the valve rod.

3. The abrasion-resistant powder fluorine-lined ball valve according to claim 1 or 2, wherein: the packing assembly comprises a lower packing, an upper packing, a packing press ring and a packing press plate which are sequentially arranged from bottom to top, wherein at least part of the outer diameter of the upper end of the lower packing is gradually reduced from bottom to top to form a lower inclined plane, at least part of the inner diameter of the lower end of the corresponding upper packing is gradually reduced from top to bottom to form an upper inclined plane, the upper packing is directly sleeved on the lower packing, and the upper packing and the lower packing are in contact with each other through the upper inclined plane and the lower inclined plane.

4. The wear-resistant powder fluorine-lined ball valve of claim 3, wherein: go up filler upper end circumference be equipped with the annular, filler clamping ring lower extreme is equipped with the joint portion of card income in the filler annular, filler clamp plate and filler clamping ring butt, the handle lower extreme be equipped with extend to with the extension of last filler butt, handle and valve rod linkage cooperation.

5. The wear-resistant powder fluorine-lined ball valve of claim 4, wherein: and the packing pressing plate is fixedly connected with the valve body.

6. The wear-resistant powder fluorine-lined ball valve of claim 1, wherein: and the valve seat sealing surface of the valve seat and the valve body sealing surface is provided with an inward concave structure.

7. The wear-resistant powder fluorine-lined ball valve of claim 1, wherein: the ball body and the valve rod are of a split structure.

8. The wear-resistant powder fluorine-lined ball valve of claim 1, wherein: an opening position locking mechanism and/or a closing position locking mechanism is arranged between the handle and the packing gland.

9. The wear-resistant powder fluorine-lined ball valve of claim 8, wherein: the opening position locking mechanism and the closing position locking mechanism are lock holes respectively formed in the packing gland and the handle, and the handle is locked at a set position by the lock penetrating through the lock holes.