CN110594439B

CN110594439B - Ball valve elastic element cavity dustproof construction

Info

Publication number: CN110594439B
Application number: CN201910789893.5A
Authority: CN
Inventors: 赵波; 季明生; 张群
Original assignee: Jiangsu Ydf Valve Co ltd
Current assignee: Jiangsu Ydf Valve Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-11-03
Anticipated expiration: 2039-08-26
Also published as: CN110594439A

Abstract

The invention relates to a dustproof structure for a ball valve elastic element cavity, which comprises a valve body, a valve rod, a sealing ring, a ball body, two valve seat groups, a sealing dustproof device, a disk spring and a circulation cavity, wherein the upper end of the valve body is connected with the upper end of the valve rod through a bearing, the middle part of the valve rod is wrapped with the sealing ring, the sealing ring is installed in the valve body, the ball body is installed at the lower end of the valve rod and is positioned between the two valve seat groups, the two valve seat groups are connected at the left end and the right end of the valve body, the circulation cavity is formed in the middle part of the valve body, the sealing dustproof device is arranged between the circulation cavity. The invention can solve the problems that when the ball valve is used, particle impurities in fluid can leak into the spring cavity when passing through the ball valve and are deposited in the spring cavity, so that the disc spring cannot move in the spring cavity and is in a failure state, the torque of a valve rod is increased sharply, or a ball cannot be rotated, so that the opening and closing of the ball valve are failed and the like.

Description

Ball valve elastic element cavity dustproof construction

Technical Field

The invention relates to the field of ball valves, in particular to a dustproof structure for a cavity of an elastic element of a ball valve.

Background

The ball valve, a drive by the valve rod, and the valve of doing rotary motion around the ball valve axis, also can be used to fluidic regulation and control, mainly comprises disk seat, spheroid, sealing washer, valve rod and other drive arrangement etc. thereby realizes opening and closing of valve through the valve body rotation degree, is used for shutting off, distribution, regulation flow size and change the medium flow direction on the pipeline, however, the fluid can bring following problem for the ball valve at the ball valve in-process often:

because contain certain particle impurity in the fluid, often can the seepage enter in the spring cavity when the ball valve to the deposit is at the spring cavity until filling up whole cavity, thereby makes belleville spring can not remove at the spring cavity and be the failure state, and the disk seat can't give way, can appear locking phenomenon between spheroid and the disk seat, thereby leads to valve rod moment of torsion surge or can't rotate the spheroid thereby to lead to opening and close inefficacy of ball valve.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a ball valve elastic element cavity dustproof construction, includes valve body, valve rod, sealing washer, spheroid, two valve seat groups, sealed dust keeper, belleville spring and circulation chamber, valve body upper end link to each other through bearing and valve rod upper end, the middle part parcel of valve rod has the sealing washer, and the sealing washer installs in the valve body, the spheroid is installed to the lower extreme of valve rod, the spheroid is located between two valve seat groups, two valve seat groups are even at both ends about the valve body, the circulation chamber has been seted up at the middle part of valve body, and be equipped with sealed dust keeper between circulation chamber and the valve seat group, sealed dust keeper middle part is equipped with belleville spring.

The valve seat group comprises a valve seat, a mushroom groove, a threaded hole and a locking groove, the mushroom groove is formed in the left end of the valve seat, the locking groove is formed in the middle of the valve seat, the threaded hole is formed in the upper end of the valve seat, and the valve seat plays a role in sealing and blocking the ball body.

The sealing dustproof device comprises a carbon fiber ring, an embedding block, an embedding column, a pressing ring, a working cavity, a locking mechanism, a locking column, a dustproof mechanism, an extrusion ring, an annular mushroom buckle and a spring cavity, wherein the embedding block is arranged at the lower end of the carbon fiber ring and embedded into the valve seat, the embedding column is uniformly arranged at the right end of the carbon fiber ring, the right end of the embedding column is embedded into the pressing ring, the extrusion ring is arranged at the right end of the carbon fiber ring, the embedding column is positioned below the extrusion ring, a working cavity is arranged in the compression ring, a locking mechanism is arranged in the working cavity, the locking column is connected with the threaded hole in an internal thread manner, the outer end of the valve seat is connected with a dustproof mechanism, a spring cavity is arranged between the dustproof mechanism and the compression ring, and a disc spring is arranged in the spring cavity and sleeved on the valve seat, an annular mushroom buckle is arranged on the inner wall of the circulation cavity, and the annular mushroom buckle is buckled in the mushroom groove.

During specific work, before the disk seat installation, embolia dustproof mechanism, belleville spring, clamping ring and carbon fiber ring on the disk seat in proper order, play the locking to the clamping ring through the rotation of locking post, later, detain the disk seat at the annular mushroom through the mushroom groove and detain, thereby simultaneously, the carbon fiber ring drives under the effect of the extrusion force and extrudes the ring and extrude inside the compression ring that has filled in the extrusion intracavity, has improved the leakproofness between compression ring and the circulation chamber.

The dustproof mechanism comprises a carbon fiber ring, a pressing ring and a limiting column, the carbon fiber ring is sleeved on the outer wall of the valve seat, a through hole is formed in the carbon fiber ring, the pressing ring is sleeved on the outer wall of the valve seat, the carbon fiber ring is located on the left side of the pressing ring, a through hole is formed in the pressing ring, the right end of the limiting column sequentially penetrates through the through hole and is connected with the threaded hole in a threaded matching mode, during specific work, the limiting column is screwed, so that the carbon fiber ring and the valve seat are tightly attached together, and the carbon fiber ring and the pressing ring are arranged to reduce the possibility that impurities enter the spring cavity.

Wherein, the middle part of the carbon fiber ring is provided with a sponge block, the outer wall of the carbon fiber ring is provided with a sponge layer, and the upper end of the carbon fiber ring is provided with a slag groove.

The thickness of the right end of the extrusion ring is gradually reduced from left to right, and the outer wall of the extrusion block is uniformly provided with the convex blocks.

The right end of the embedding block is provided with a triangular block, the left end of the embedding block is provided with an arc-shaped groove, and the inner wall of the working cavity is coated with a metal layer.

The compression ring comprises a rubber material, the left end of the compression ring is provided with an extrusion cavity, the upper end of the inner wall of the extrusion cavity is provided with an inner groove, and the position between the protruding block and the inner groove corresponds to one another one by one.

The locking mechanism comprises a connecting spring and an inserting column, the inserting column is connected with the working cavity through the connecting spring, a connecting sleeve is sleeved outside the connecting spring, the pressing ring is sleeved on the outer wall of the valve seat during specific working, the inserting column is integrally located in the working cavity until the inserting column is inserted into the locking groove, and then the inserting column is locked in the limiting groove through the locking column.

The upper end of the insertion column is provided with a rectangular plate, the lower end of the insertion column is provided with a limiting groove, and the limiting groove and the right end of the locking column are in an embedded relation.

Advantageous effects

1. According to the dustproof structure for the cavity of the elastic element of the ball valve, impurities in fluid are filtered by utilizing the filterability of carbon fibers, the spring cavity is sealed and protected in a multi-layer sealing mode, the possibility of entering of particle impurities is reduced, and the locking condition between a ball body and a valve seat is avoided;

2. according to the dustproof structure for the cavity of the elastic element of the ball valve, impurities in fluid are filtered by the carbon fiber ring and the carbon fiber ring, and the carbon fiber ring are detachable, so that the difficulty of personnel in replacing the carbon fiber ring and the carbon fiber ring regularly is reduced;

3. according to the dustproof structure for the cavity of the elastic element of the ball valve, the extrusion cavity is arranged to reduce the difficulty of the extrusion ring entering the circulation cavity, and when the extrusion ring extrudes the interior of the extrusion cavity, the internal fullness of the compression ring is improved, so that the gap between the compression ring and the circulation cavity is reduced, and the sealing performance is improved;

4. according to the reinforced composite floor, the dust-proof mechanism prevents fluid from entering and impurities from being filtered, and the possibility that particle impurities enter the spring cavity is reduced.

Drawings

The invention is further illustrated with reference to the following figures and examples.

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

FIG. 2 is an enlarged view of a portion of FIG. 1 according to the present invention in the X direction;

FIG. 3 is a schematic view of the structure of the carbon fiber ring, insert and extrusion ring of the present invention.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.

The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.

As shown in fig. 1 to 3, a ball valve elastic element cavity dustproof construction, including valve body 1, valve rod 2, sealing washer 3, spheroid 4, two valve seat groups 5, sealed dust keeper 6, belleville spring 7 and

circulation chamber

8, 1 upper end of valve body pass through the bearing and link to each other with 2 upper ends of valve rod, the middle part parcel of valve rod 2 has sealing washer 3, and sealing washer 3 installs in valve body 1, spheroid 4 is installed to the lower extreme of valve rod 2, spheroid 4 is located between two valve seat groups 5, two valve seat groups 5 link at both ends about valve body 1, circulation chamber 8 has been seted up at the middle part of valve body 1, and is equipped with sealed dust keeper 6 between circulation chamber 8 and the valve seat group 5, sealed dust keeper 6 middle part is equipped with belleville spring 7.

The valve seat group 5 comprises a valve seat 51, a mushroom groove 52, a threaded hole 53 and a locking groove 54, the mushroom groove 52 is formed in the left end of the valve seat 51, the locking groove 54 is formed in the middle of the valve seat 51, the threaded hole 53 is formed in the upper end of the valve seat 51, and the valve seat 51 plays a role in sealing and blocking the ball 4.

The sealing dustproof device 6 comprises a carbon fiber ring 61, an embedded block 62, an embedded column 63, a pressing ring 64, a working cavity 65, a locking mechanism 66, a locking column 67, a dustproof mechanism 68, an extrusion ring 69, an annular mushroom buckle 70 and a spring cavity 71, wherein the embedded block 62 is installed at the lower end of the carbon fiber ring 61, the embedded block 62 is embedded into the valve seat 51, the embedded column 63 is evenly installed at the right end of the carbon fiber ring 61, the right end of the embedded column 63 is embedded into the pressing ring 64, the extrusion ring 69 is installed at the right end of the carbon fiber ring 61, the embedded column 63 is positioned below the extrusion ring 69, the working cavity 65 is formed in the pressing ring 64, the locking mechanism 66 is arranged in the working cavity 65, the locking column 67 is connected with the threaded hole 53 through threads, the outer end of the valve seat 51 is connected with the dustproof mechanism 68, a spring cavity 71 is arranged between the dustproof mechanism 68 and the pressing ring 64, and a disc, and the disc spring 7 is sleeved on the valve seat 51, the inner wall of the circulation cavity 8 is provided with an annular mushroom buckle 70, and the annular mushroom buckle 70 is buckled in the mushroom groove 52.

During specific work, before the valve seat 51 is installed, the dustproof mechanism 68, the disc spring 7, the pressing ring 64 and the carbon fiber ring 61 are sequentially sleeved on the valve seat 51, the pressing ring 64 is locked through rotation of the locking column 67, then the valve seat 51 is buckled on the annular mushroom buckle 70 through the mushroom groove 52, meanwhile, the carbon fiber ring 61 drives the extrusion ring 69 to extrude into the extrusion cavity under the action of extrusion force, so that the interior of the pressing ring 64 is filled, and the sealing performance between the pressing ring 64 and the circulation cavity 8 is improved.

Dustproof mechanism 68 include carbon fiber circle 681, clamping ring 682 and spacing post 683, carbon fiber circle 681 overlaps and is established on the disk seat 51 outer wall, carbon fiber circle 681 is inside to be seted up the through-hole, clamping ring 682 overlaps and is established on the disk seat 51 outer wall, and carbon fiber circle 681 is located the left of clamping ring 682, the through-hole has been seted up to clamping ring 682 inside, the right-hand member of spacing post 683 passes through-hole and through-hole in proper order, and be connected with screw hole 53 through the screw-thread fit mode, during specific work, twist spacing post 683 thereby with carbon fiber circle 681, the laminating that tightly is in the same place between clamping ring 682 and the disk seat 51, and carbon fiber circle 681, the setting of clamping ring 682 has reduced the possibility that impurity enters into spring cavity 71.

Thereby the middle part of carbon fiber ring 61 be equipped with the sponge piece and played the buffering and go the effect of miscellaneous, the outer wall of carbon fiber ring 61 is equipped with the sponge layer, has reduced the clearance between carbon fiber ring 61 outer wall and the circulation chamber 8, the long-pending sediment groove has been seted up to the upper end of carbon fiber ring 61, thereby the setting up of long-pending sediment groove has played the impurity of going into by mistake and has played accumulational effect and avoided impurity to enter into in the spring cavity 71.

The thickness of the right end of the extrusion ring 69 is gradually reduced from left to right, and the outer wall of the extrusion block is uniformly provided with the convex blocks.

The right-hand member of embedded block 62 be equipped with three hornblocks, three hornblocks be provided with the orbit that has prolonged the fluid and got into to reduced the possibility that impurity got into, the arc recess has been seted up to embedded block 62's left end, the setting of arc recess has reduced the impact force of fluid to the arc recess, the inner wall of working chamber 65 scribbles the metal level, because clamping ring 64 comprises for the rubber material, the setting of metal level has avoided working chamber 65 inner space to lead to under the outside pressure to warp, thereby has blockked the slip of inserting post 662.

Clamping ring 64 constitute by the rubber material, the extrusion chamber has been seted up to the left end of clamping ring 64, and the inner groovy has been seted up to the inner wall upper end in extrusion chamber, and the position one-to-one between protruding piece and the inner groovy thereby extrude ring 69 and get into the extrusion intracavity and filled the inside degree of fullness that has improved clamping ring 64, improved the degree of sealing between clamping ring 64 and circulation chamber 8.

Locking mechanism 66 including connecting spring 661 and insert the post 662, insert the post 662 and link to each other with working chamber 65 through connecting spring 661, thereby the outside cover of connecting spring 661 is equipped with the adapter sleeve and plays rust-resistant effect, during concrete work, when the disk seat 51 outer wall was established to the cover to the clamping ring 64, insert the whole working chamber 65 that is located of post 662, until insert in post 662 inserts locking groove 54, later insert the spacing inslot through locking post 67 and carry out locking process to inserting post 662.

Insert the post 662 upper end be equipped with the rectangular plate, the pivoted condition when having avoided inserting post 662 to go up and down is avoided in the setting of rectangular plate, the spacing groove has been seted up to the lower extreme that inserts post 662, the spacing groove is the embedding relation with the right-hand member of locking post 67.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a ball valve elastic element cavity dustproof construction, includes valve body (1), valve rod (2), sealing washer (3), spheroid (4), two valve seat groups (5), sealed dust keeper (6), belleville spring (7) and circulation chamber (8), its characterized in that: the upper end of the valve body (1) is connected with the upper end of the valve rod (2) through a bearing, the middle part of the valve rod (2) is wrapped with a sealing ring (3), the sealing ring (3) is installed in the valve body (1), the lower end of the valve rod (2) is provided with a ball body (4), the ball body (4) is positioned between two valve seat groups (5), the two valve seat groups (5) are connected at the left end and the right end of the valve body (1), the middle part of the valve body (1) is provided with a circulation cavity (8), a sealing dustproof device (6) is arranged between the circulation cavity (8) and the valve seat groups (5), and the middle part of the sealing dustproof device (6) is provided with a disc spring;

the valve seat group (5) comprises a valve seat (51), a mushroom groove (52), a threaded hole (53) and a locking groove (54), the mushroom groove (52) is formed in the left end of the valve seat (51), the locking groove (54) is formed in the middle of the valve seat (51), and the threaded hole (53) is formed in the upper end of the valve seat (51);

the sealing dustproof device (6) comprises a carbon fiber ring (61), an embedding block (62), an embedding column (63), a pressing ring (64), a working cavity (65), a locking mechanism (66), a locking column (67), a dustproof mechanism (68), an extrusion ring (69), an annular mushroom buckle (70) and a spring cavity (71), wherein the embedding block (62) is installed at the lower end of the carbon fiber ring (61), the embedding block (62) is embedded into the valve seat (51), the embedding column (63) is uniformly installed at the right end of the carbon fiber ring (61), the right end of the embedding column (63) is embedded into the pressing ring (64), the extrusion ring (69) is installed at the right end of the carbon fiber ring (61), the embedding column (63) is positioned below the extrusion ring (69), the working cavity (65) is formed in the pressing ring (64), the locking mechanism (66) is arranged in the working cavity (65), the locking column (67) is in a threaded hole (53), the outer end of the valve seat (51) is connected with a dustproof mechanism (68), a spring cavity (71) is arranged between the dustproof mechanism (68) and the pressing ring (64), a disc spring (7) is arranged in the spring cavity (71), the disc spring (7) is sleeved on the valve seat (51), an annular mushroom buckle (70) is arranged on the inner wall of the circulation cavity (8), and the annular mushroom buckle (70) is buckled in the mushroom groove (52);

dustproof mechanism (68) include carbon fiber circle (681), clamping ring (682) and spacing post (683), carbon fiber circle (681) cover is established on disk seat (51) outer wall, carbon fiber circle (681) inside has seted up the through-hole, clamping ring (682) cover is established on disk seat (51) outer wall, and carbon fiber circle (681) is located the left of clamping ring (682), the through-hole has been seted up to clamping ring (682) inside, the right-hand member of spacing post (683) passes through-hole and through-hole in proper order to be connected with screw hole (53) through the screw-thread fit mode.

2. The ball valve elastic element cavity dust-proof structure according to claim 1, characterized in that: the middle part of the carbon fiber ring (61) is provided with a sponge block, the outer wall of the carbon fiber ring (61) is provided with a sponge layer, and the upper end of the carbon fiber ring (61) is provided with a slag groove.

3. The ball valve elastic element cavity dust-proof structure according to claim 1, characterized in that: the thickness of the right end of the extrusion ring (69) is gradually reduced from left to right, and the outer wall of the extrusion block is uniformly provided with convex blocks.

4. The ball valve elastic element cavity dust-proof structure according to claim 1, characterized in that: the right end of the embedding block (62) is provided with a triangular block, the left end of the embedding block (62) is provided with an arc-shaped groove, and the inner wall of the working cavity (65) is coated with a metal layer.

5. The ball valve elastic element cavity dust-proof structure according to claim 1, characterized in that: clamping ring (64) constitute by the rubber material, the extrusion chamber has been seted up to the left end of clamping ring (64), and has seted up the inner groovy on the inner wall in extrusion chamber, and the position one-to-one between protruding piece and the inner groovy.

6. The ball valve elastic element cavity dust-proof structure according to claim 1, characterized in that: locking mechanism (66) including connecting spring (661) and insert post (662), insert post (662) and link to each other with working chamber (65) through connecting spring (661), the outside cover of connecting spring (661) is equipped with the adapter sleeve.

7. The ball valve elastic member cavity dust-proof structure according to claim 6, characterized in that: the upper end of the insertion column (662) is provided with a rectangular plate, the lower end of the insertion column (662) is provided with a limiting groove, and the limiting groove is in embedded relation with the right end of the locking column (67).