CN107084258B

CN107084258B - Butt-clamping fluorine ball valve

Info

Publication number: CN107084258B
Application number: CN201710421892.6A
Authority: CN
Inventors: 林忠孩; 邵建腾; 杨洪沣
Original assignee: Zhejiang Doxi Valve Co ltd
Current assignee: Zhejiang Doxi Valve Co ltd
Priority date: 2017-06-07
Filing date: 2017-06-07
Publication date: 2023-04-28
Anticipated expiration: 2037-06-07
Also published as: CN107084258A

Abstract

A butt-clamped fluorine ball valve. The ball valve solves the problems that an existing ball valve is connected through a flange, the structure is complex and large in size, and sealing performance is poor after fluorine lining. The valve comprises a valve body, a gland, a valve seat, a ball body matched with the valve seat and a valve rod connected with the ball body, wherein the valve body comprises a left valve body and a right valve body, a first mounting hole is formed in the outer surface of the left valve body, a second mounting hole is formed in the outer surface of the right valve body, a pair of clamping type mounting holes are formed in the first mounting hole and the second mounting hole, a first fluorine lining layer is arranged on the inner wall of the left valve body, a second fluorine lining layer is arranged on the right valve body, a third fluorine lining layer is arranged on the ball body, a filler sealing piece is arranged on the outer sleeve of the valve rod, and a gap is formed between the filler sealing piece and the valve seat. The invention also has the advantages of simple structure, convenient assembly, reliable action, long service life and the like.

Description

Butt-clamping fluorine ball valve

Technical Field

The invention relates to a ball valve, in particular to a butt-clamped fluorine ball valve.

Background

Ball valves (ball valves) have been developed in the 50 s of the 20 th century, and along with the rapid development of science and technology, the continuous improvement of production process and product structure has been rapidly developed into a main valve class in a short 40-year period. In countries with developed western industry, the use of ball valves is increasing year by year. In China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a role in national economy. It has the action of rotating 90 degrees, the cock body is a sphere with a circular through hole or channel passing through its axis. Ball valves are used in pipelines mainly to cut off, distribute and change the flow direction of a medium, and can be tightly closed only by rotating the ball valve by 90 degrees and small rotating moment. However, the conventional ball valve is generally complex in structure, a flange plate is usually arranged for matching installation, the flanges at the two ends of the valve are connected to the pipeline flange by bolts, the structure is complex, the volume is large and heavy, in a pipeline with large medium corrosiveness, the fluorine lining treatment is usually required, but the conventional fluorine lining ball valve is poor in sealing performance, the fluorine lining is unreliable, the leakage risk still exists, and the service life of a product is influenced.

Disclosure of Invention

The invention provides a butt-clamped fluorine-lined ball valve, which aims to solve the problems that an existing ball valve in the background art is connected through a flange, has a complex structure and large volume, and has poor sealing performance after fluorine lining.

The technical scheme of the invention is as follows: the utility model provides a butt clamp lining fluorine ball valve, includes valve body, gland, disk seat, the spheroid with disk seat looks adaptation and the valve rod of being connected with the spheroid, the valve body include left valve body and right valve body, left valve body and right valve body mutually support and form the medium passageway, the spheroid locate in the medium passageway, left valve body and right valve body be connected through the bolt, be equipped with a plurality of first mounting holes that are used for being connected with external pipeline on the surface of left valve body, be equipped with a plurality of second mounting holes that are used for being connected with external pipeline on the surface of right valve body, first mounting hole and second mounting hole form butt clamp formula mounting hole, the inner wall of left valve body on be equipped with first lining fluorine layer, right valve body on be equipped with second lining fluorine layer, the spheroid on be equipped with third lining fluorine layer, the valve rod overcoat be equipped with the filler seal, filler seal and disk seat between be equipped with the clearance.

As an improvement of the invention, the first fluorine lining layer comprises a limiting part arranged on the outer side of the left valve body, a right-angle installation part used for installing the valve seat and a clamping part attached to the packing sealing element, wherein the clamping part is clamped with the inner wall of the left valve body, and a connecting part is arranged between the right-angle installation part and the clamping part.

As a further improvement of the invention, the clamping part turns over an edge part towards the upper outer side of the left valve body, and the edge part is clamped with the left valve body.

As a further improvement of the invention, the clamping part and the edge part are respectively provided with a plurality of clamping teeth which are clamped with the left valve body.

As a further improvement of the invention, the ball body and the valve rod are of an integrated structure, and the third fluorine lining layer extends from the ball body to the packing sealing part on the valve rod.

As a further improvement of the invention, the gland is connected with the packing sealing element through the packing pressing sleeve, the gland is provided with a groove, and the packing pressing sleeve is sleeved outside the valve rod.

As a further improvement of the invention, the packing press sleeve is provided with a first pressing part protruding outwards near the gland end, the packing press sleeve is provided with a second pressing part protruding inwards near the packing seal end, the second pressing part is propped against the packing seal, and the packing seal is provided with a clamping hook part clamped with the second pressing part.

As a further improvement of the invention, the packing sealing element is provided with a plurality of annular grooves, and the annular grooves are arranged on the inner wall and the outer wall of the packing sealing element.

As a further improvement of the invention, a plurality of annular grooves are alternately arranged on the inner wall and the outer wall of the packing seal, and the annular grooves are V-shaped in cross section.

As a further improvement of the invention, the valve rod is connected with the operating handle, the valve rod is sleeved with the grounding spring, one end of the grounding spring is connected with the operating handle, and the other end of the grounding spring is connected with the gland.

The invention has the advantages that the valve body is formed by matching the left valve body and the right valve body, so that the product has simple structure and convenient assembly, the first mounting hole and the second mounting hole can realize the opposite clamping type mounting of the product, the use of the flange plate is avoided, meanwhile, the structure is simple, the volume is small, the weight is light, the valve is only composed of a few parts, the valve can be quickly opened and closed only by rotating by 90 degrees, the operation is simple, the thickness of the valve body is the only resistance when a medium flows through the valve body when the ball valve is in a complete opening position, and therefore, the pressure drop generated by the valve is small, and the valve has good fluid control characteristics. And the fluorine lining layer is arranged, so that the parts possibly contacted with the medium channel are wrapped, corrosion of metal parts is avoided, the product can act under the working condition of corrosive medium, the product adaptation range is wide, and the sealing is reliable. The arrangement of the gap reduces the friction force when the ball rotates, and simultaneously plays a role in accommodating a small amount of medium when leakage occurs, so that the medium is prevented from corroding the parts. The invention also has the advantages of simple structure, convenient assembly, reliable action, long service life and the like.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure, 1, a valve body; 11. a left valve body; 111. a first mounting hole; 112. a first fluorine-lined layer; 1121. a limit part; 1122. a right angle mounting portion; 1123. a clamping part; 1124. a connection part; 1125. an edge portion; 1126. latch teeth; 12. a right valve body; 121. a second mounting hole; 122. a second fluorine-lined layer; 13. a media channel; 14. a bolt; 2. a gland; 21. a groove; 3. a valve seat; 4. a sphere; 41. a third fluorine-lined layer; 5. a valve stem; 6. a packing seal; 61. a hook part; 62. an annular groove; 7. a gap; 8. packing pressing sleeve; 81. a first pressing portion; 82. a second pressing portion; 9. an operation handle; 91. and a grounding spring.

Detailed Description

Embodiments of the invention are further described below with reference to the accompanying drawings:

the utility model provides a butt clamp lining fluorine ball valve, includes valve body 1, gland 2, disk seat 3, the spheroid 4 that suits with disk seat 3 and the valve rod 5 that is connected with spheroid 4, valve body 1 include left valve body 11 and right valve body 12, left valve body 11 and right valve body 12 mutually support and form medium passageway 13, spheroid 4 locate in medium passageway 13, left valve body 11 and right valve body 12 be connected through bolt 14, be equipped with a plurality of first mounting holes 111 that are used for being connected with external pipeline on the surface of left valve body 11, be equipped with a plurality of second mounting holes 121 that are used for being connected with external pipeline on the surface of right valve body 12, first mounting holes 111 and second mounting holes 121 form the butt clamp type mounting hole, the inner wall of left valve body 11 on be equipped with first lining fluorine layer 112, right valve body 12 on be equipped with second lining fluorine layer 122, spheroid 4 on be equipped with third lining fluorine layer 41, valve rod 5 overcoat be equipped with packing seal 6,

seal

6 and 3 between be equipped with clearance 7 with the disk seat. The invention has the advantages that the valve body is formed by matching the left valve body and the right valve body, so that the product has simple structure and convenient assembly, the first mounting hole and the second mounting hole can realize the opposite clamping type mounting of the product, the use of the flange plate is avoided, meanwhile, the structure is simple, the volume is small, the weight is light, the valve is only composed of a few parts, the valve can be quickly opened and closed only by rotating by 90 degrees, the operation is simple, the thickness of the valve body is the only resistance when a medium flows through the valve body when the ball valve is in a complete opening position, and therefore, the pressure drop generated by the valve is small, and the valve has good fluid control characteristics. And the fluorine lining layer is arranged, so that the parts possibly contacted with the medium channel are wrapped, corrosion of metal parts is avoided, the product can act under the working condition of corrosive medium, the product adaptation range is wide, and the sealing is reliable. The arrangement of the gap reduces the friction force when the ball rotates, and simultaneously plays a role in accommodating a small amount of medium when leakage occurs, so that the medium is prevented from corroding the parts. The invention also has the advantages of simple structure, convenient assembly, reliable action, long service life and the like.

The first fluorine lining layer 112 comprises a limiting part 1121 arranged on the outer side of the left valve body 11, a right-angle mounting part 1122 used for mounting the valve seat 3 and a clamping part 1123 attached to the packing seal 6, the clamping part 1123 is clamped with the inner wall of the left valve body 11, and a connecting part 1124 is arranged between the right-angle mounting part 1122 and the clamping part 1123. The setting of spacing portion carries out spacing on the medium circulation direction to first lining fluorine layer to make first lining fluorine layer installation convenient and reliable, the setting of right angle installation department makes the disk seat fixed reliable, avoids the disk seat to remove and influences product sealing performance. The setting of joint portion makes to carry out spacingly to first lining fluorine layer, and the installation of being convenient for first lining fluorine layer is fixed. Specifically, the engaging portion 1123 is folded to the upper outer side of the left valve body 11 to form an edge portion 1125, and the edge portion 1125 is engaged with the left valve body 11. More specifically, the clamping portion 1123 and the edge portion 1125 are provided with a plurality of clamping teeth 1126 that are clamped with the left valve body 11. The setting of border portion makes the inner wall of left valve body all wrap in first lining fluorine layer, avoids leaking the damage valve body to make product long service life. The first fluorine lining layer is reliably fixed through the latch, and the position of the first fluorine lining layer cannot deviate when the medium is flushed, so that the product is reliably sealed.

The ball 4 and the valve rod 5 are of an integrated structure, and the third fluorine lining layer 41 extends from the ball 4 to the packing seal 6 on the valve rod 5. The medium of such a structure does not leak from the valve stem.

The gland 2 is connected with the packing seal 6 through a packing gland 8, a groove 21 is formed in the gland 2, and the packing gland 8 is sleeved outside the valve rod 5. The gland and the packing sleeve can continuously press the packing gland, so that the medium cannot leak from the valve rod and the packing sealing piece, and the sealing is reliable.

The packing pressing sleeve 8 protrudes outwards from the first pressing part 81 near the end of the pressing cover 2, the packing pressing sleeve 8 protrudes inwards from the second pressing part 82 near the end of the packing sealing element 6, the second pressing part 82 abuts against the packing sealing element 6, and the clamping hook part 61 clamped with the second pressing part 82 is arranged on the packing sealing element. The arrangement of the first pressing part and the second pressing part increases the contact area, so that the pressure on the pressing cover can be reliably transmitted to the packing sealing piece, and the sealing is reliable. The setting of pothook portion carries out spacingly to packing press sleeve, avoids packing press sleeve to shift under the pressure effect and influences product sealing performance.

The packing seal 6 is provided with a plurality of annular grooves 62, and the annular grooves 62 are arranged on the inner wall and the outer wall of the packing seal 6. Specifically, a plurality of annular grooves 62 are alternately arranged on the inner wall and the outer wall of the packing seal 6, and the annular grooves 62 are V-shaped in cross section. When the setting of ring channel makes the packing seal spare pressed by the gland, the ring channel provides elastic force for the packing seal spare is pressed the deformation, and sealed more reliable, and the setting of ring channel is convenient for provide the appearance chamber, can store a small amount of leakage medium, avoids the medium to flow out and damage the valve body valve rod.

The valve rod 5 is connected with the operating handle 9, the grounding spring 91 is sleeved on the valve rod 5, one end of the grounding spring 91 is connected with the operating handle 9, and the other end of the grounding spring 91 is connected with the gland 2. The arrangement of the grounding spring enables static electricity generated at the valve rod, the fluorine lining layer and the filler sealing piece to be reliably led out, so that the system cannot be charged with the static electricity, and the product safety performance is good.

The skilled person will know: while the invention has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the invention, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.

Claims

1. The butt-clamping fluorine ball valve comprises a valve body (1), a gland (2), a valve seat (3), a ball body (4) matched with the valve seat (3) and a valve rod (5) connected with the ball body (4), wherein the valve body (1) comprises a left valve body (11) and a right valve body (12), and is characterized in that the left valve body (11) and the right valve body (12) are mutually matched to form a medium channel (13), the ball body (4) is arranged in the medium channel (13), the left valve body (11) and the right valve body (12) are connected through bolts (14), a plurality of first mounting holes (111) used for being connected with an external pipeline are formed in the outer surface of the left valve body (11), a plurality of second mounting holes (121) used for being connected with the external pipeline are formed in the outer surface of the right valve body (12), a first fluorine lining layer (112) is arranged on the inner wall of the left valve body (11), a second fluorine lining layer (12) is arranged on the inner wall of the left valve body (11), a third sealing piece (4) is arranged between the ball seat (4) and a sealing piece (41), gland (2) be connected with packing (6) through packing cover (8), gland (2) on be equipped with recess (21), packing cover (8) cover locate outside valve rod (5), packing cover (8) be close to gland (2) end outside first pressure portion (81) of protrusion, packing cover (8) be close to packing (6) end inside protrusion second pressure portion (82), second pressure portion (82) offset with packing (6), just packing be equipped with pothook portion (61) that blocks mutually with second pressure portion (82) on the packing, packing (6) on be equipped with a plurality of ring grooves (62), a plurality of ring grooves (62) locate on the inner wall and the outer wall of packing (6), valve rod (5) be connected with operating handle (9), valve rod (5) on cover locate ground spring (91), one end of ground spring (91) be connected with gland (2) with operating handle.

2. The butt-clamp fluorine-lined ball valve according to claim 1, wherein the first fluorine-lined layer (112) comprises a limiting part (1121) arranged on the outer side of the left valve body (11), a right-angle mounting part (1122) for mounting the valve seat (3) and a clamping part (1123) attached to the packing seal (6), the clamping part (1123) is clamped with the inner wall of the left valve body (11), and a connecting part (1124) is arranged between the right-angle mounting part (1122) and the clamping part (1123).

3. The butt-clamped fluorine ball valve according to claim 2, wherein the clamping part (1123) is folded to form a rim part (1125) on the upper outer side of the left valve body (11), and the rim part (1125) is clamped with the left valve body (11).

4. The butt-clamped fluorine ball valve according to claim 3, wherein a plurality of clamping teeth (1126) which are clamped with the left valve body (11) are arranged on the clamping part (1123) and the edge part (1125).

5. A butt-lined fluorine ball valve according to claim 1, characterized in that the ball (4) and the valve stem (5) are of one piece construction, and the third lining fluorine layer (41) extends from the ball (4) to the packing seal (6) on the valve stem (5).

6. The butt-lined fluorine ball valve according to claim 1, wherein a plurality of annular grooves (62) are provided alternately on the inner wall and the outer wall of the packing seal (6), the annular grooves (62) being V-shaped in cross section.