CN218895007U - Leak-proof ball valve - Google Patents

Abstract

The utility model belongs to the technical field of ball valves, in particular to a leakage-proof ball valve, which comprises a valve body, a ball core assembly and an extrusion mechanism, wherein the ball core assembly comprises a ball core and a rubber layer, the rubber layer is of a ball shell structure, the rubber layer is wrapped on the outer side of the ball core, the valve body is of a ball shell structure, two end pipes are symmetrically communicated with the outer side of the valve body, the ball core is positioned in the valve body, and the outer side wall of the rubber layer is bonded with the inner side wall of the valve body; the utility model is convenient to block the gap between the ball core and the valve body through the arrangement of the rubber layer and the extrusion mechanism, so that the abrasion caused by the contact between the ball core and the valve body is avoided, or the gap exists between the ball core and the valve body due to the quality problem.

Description

Leak-proof ball valve

Technical Field

The utility model relates to the technical field of ball valves, in particular to a leakage-proof ball valve.

Background

The ball valve is driven by the valve rod and can be used for regulating and controlling fluid, and 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 occupies a vital position in national economy, and has the action of rotating by 90 degrees.

One Chinese patent with publication number of CN209469818U discloses a ball valve and a ball valve assembly thereof, the ball valve comprises a valve body, a valve core and a valve rod, wherein a convex part is arranged on the outer wall of the valve body, the valve core is arranged in the valve body, one end of the valve rod is connected with the valve core, the other end of the valve rod penetrates out of the convex part, the ball valve further comprises a limit cover, a locking mechanism and a limit structure, one end of the valve rod, which penetrates out of the convex part, is connected with the limit cover, the limit cover can rotate relative to the convex part, a locking hole is formed in the limit cover, and the locking mechanism is arranged between the limit cover and the convex part and is matched with the locking hole; the limiting structure is arranged on the convex part and used for limiting the rotation angle of the limiting cover relative to the convex part.

After the ball valve works for a long time, a gap is formed between the valve body and the ball core due to friction, or when the ball valve is produced, the gap is formed between the valve body and the ball core due to the factors of product quality, so that a medium in a conveying pipeline flows into the gap, the control of the ball valve on the medium flow is influenced, and even, liquid in the gap leaks from the contact position of a ball core rotating shaft and the valve body; accordingly, a leak-proof ball valve is proposed against the above-mentioned problems.

Disclosure of Invention

In order to make up the deficiency of the prior art, the ball valve is used for a long time, and the gap is formed between the valve body and the ball core piece due to friction, so that the medium in the conveying pipeline leaks.

The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a leakage-proof ball valve, which comprises a valve body, a ball core assembly and an extrusion mechanism, wherein the ball core assembly comprises a ball core and a rubber layer, the rubber layer is in a ball shell structure, the rubber layer is wrapped on the outer side of the ball core, the valve body is in a ball shell structure, two end pipes are symmetrically and communicated on the outer side of the valve body, the ball core is positioned in the valve body, the outer side wall of the rubber layer is adhered to the inner side wall of the valve body, one ends of the two end pipes, which are close to each other, protrude out of the inner side wall of the valve body, sealing rings are arranged at one ends of the two end pipes, which are close to each other, the sealing rings are in sealing sliding contact with the outer side wall of the ball core, the extrusion mechanism is positioned between the valve body and the rubber layer, and the extrusion mechanism comprises a first extrusion assembly or a second extrusion assembly and is used for propping against the rubber layer to attach the ball core;

through the setting of rubber layer and extrusion mechanism, be convenient for block up the clearance of ball core and valve body, avoid the contact to cause wearing and tearing between ball core and the valve body, perhaps because of having a clearance between quality problem ball core and the valve body, after the ball core rotates certain angle simultaneously, make its deformation through applying effort to extrusion mechanism, and extrude the rubber layer, make rubber layer and ball core in close contact, make rubber layer and ball core sealing contact, further avoid liquid to circulate from between valve body and the ball core, through setting up the sealing washer, initially realize the sealed sliding contact of ball core and valve body.

Preferably, the first extrusion assembly comprises two symmetrical arc plates, a sleeve is arranged in the middle of each arc plate, end plates of the arc plates are fixedly connected with end plates, fastening bolts are arranged on the upper sides of the end plates of the arc plates in a penetrating mode, lower ends of the fastening bolts are inserted into the end plates of the arc plates in a threaded mode, through holes are formed in the side walls of the valve body, the end plates penetrate through the through holes, and the sleeve is sleeved on a rotating shaft of the ball core.

Preferably, the second extrusion assembly comprises two arc plates and two rotating discs which are symmetrically arranged, a ring plate is arranged in the middle of each arc plate, tooth grooves are formed in two ends of the outer side wall of each arc plate, teeth are formed in the side walls, close to each other, of each rotating disc, the teeth are meshed with the tooth grooves and connected, a circular hole is formed in the side wall of the valve body, the rotating disc is located in the circular hole, and the ring plate is sleeved on the rotating shaft of the ball core.

Preferably, the inner side wall of the valve body is provided with an annular groove, the inner side wall of the annular groove is provided with a sealing layer, the arc plate or the arc plate is positioned in the annular groove, and the arc plate or the arc plate is in sealing contact with the annular groove through the sealing layer; the arrangement of the annular groove is convenient for providing space for the installation of the arc-shaped plate, and the sealing contact of the rubber layer and the valve body is prevented from being influenced by the existence of the arc-shaped plate.

Preferably, the side walls of the end plates are provided with sealing gaskets, the sealing gaskets enable the two end plates to be in sealing contact, and the sealing gaskets enable the end plates to be in sealing contact with the through holes; the sealing gasket is arranged to facilitate the movable connection of the arc-shaped plate and the annular groove.

Preferably, the end faces of the two end pipes, which are close to each other, are arranged to be of a curved surface structure, and the sealing ring is fixedly adhered to the curved surface of the end pipe.

Preferably, the rotating discs are arranged in the circular holes through bearings, and polygonal grooves are formed in the side walls of the two rotating discs, which are far away from each other; the polygonal groove is convenient for provide space for a worker to hold the polygonal wrench and insert the polygonal wrench, so that acting force is applied to the rotating disc to enable the rotating disc to rotate, and movement of the arc plate is realized.

The utility model has the advantages that:

1. through setting up the rubber layer, be convenient for block up the clearance of ball core and valve body, avoid ball core and valve body to contact and cause wearing and tearing, or because of the quality problem there is the clearance between ball core and the valve body, simultaneously after the ball core rotates certain angle, through setting up extrusion mechanism, exert effort make its deformation to extrusion mechanism to extrude the rubber layer, make rubber layer and ball core close contact, make rubber layer and ball core sealing contact, further avoid the liquid to circulate from between valve body and the ball core;

2. through setting up the sealing washer, preliminarily realize the sealed sliding contact of ball core and valve body, and then with the multiple sealed protection of rubber layer cooperation realization valve body and ball core.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a first schematic overall view of the present utility model;

FIG. 2 is a schematic view of a ball core assembly according to the present utility model;

FIG. 3 is a schematic view of a first extrusion assembly according to the present utility model;

FIG. 4 is a schematic view of a valve body and an end tube according to the present utility model;

FIG. 5 is a second overall schematic of the present utility model;

FIG. 6 is a schematic view of a second extrusion assembly according to the present utility model.

In the figure: 1. a valve body; 11. an annular groove; 12. a sealing layer; 13. perforating; 14. a circular hole; 2. a ball core assembly; 21. a core; 22. an end pipe; 23. a seal ring; 24. a rubber layer; 3. a first press assembly; 31. an arc-shaped plate; 32. a sleeve; 33. an end plate; 34. a sealing gasket; 35. a fastening bolt; 4. a second extrusion assembly; 41. an arc plate; 42. a ring plate; 43. tooth sockets; 44. a rotating disc; 45. teeth.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-4, a leak-proof ball valve is shown, which comprises a valve body 1, a ball core assembly 2 and an extrusion mechanism, wherein the ball core assembly 2 comprises a ball core 21 and a rubber layer 24, the rubber layer 24 is in a ball shell structure, the rubber layer 24 is wrapped on the outer side of the ball core 21, the valve body 1 is in a ball shell structure, two end pipes 22 are symmetrically communicated with each other on the outer side of the valve body 1, the ball core 21 is positioned in the valve body 1, the outer side wall of the rubber layer 24 is adhered to the inner side wall of the valve body 1, one ends of the two end pipes 22 close to each other protrude out of the inner side wall of the valve body 1, the end surfaces of the two end pipes 22 close to each other are in a curved surface structure, a sealing ring 23 is fixedly adhered to the curved surface of the end pipes 22, the sealing ring 23 is in sealing sliding contact with the outer side wall of the ball core 21, the extrusion mechanism is positioned between the valve body 1 and the rubber layer 24, and the extrusion mechanism comprises a first extrusion assembly 3;

the first extrusion component 3 comprises two symmetrical arc plates 31, a sleeve 32 is arranged in the middle of each arc plate 31, an end plate 33 is fixedly connected with the end of each arc plate 31, a fastening bolt 35 is arranged on the end plate 33 of the upper arc plate 31 in a penetrating way, the lower end thread of each fastening bolt 35 is inserted into the end plate 33 of the lower arc plate 31,

the annular groove 11 has been seted up to valve body 1 inside wall, annular groove 11 inside wall is provided with sealing layer 12, perforation 13 has been seted up to valve body 1's lateral wall, arc 31 is located annular groove 11, and arc 31 passes through sealing layer 12 and annular groove 11 sealing contact, end plate 33 runs through perforation 13 setting, end plate 33's lateral wall all is provided with sealing gasket 34, sealing gasket 34 makes sealing contact between two end plates 33, and sealing gasket 34 makes end plate 33 and perforation 13 sealing contact, sleeve pipe 32 cover is established in the pivot of ball core 21.

The existing ball valve is mainly applied to a conveying pipeline so as to control the smoothness of the conveying pipeline and control the medium flow in the conveying pipeline, the ball valve comprises a valve body 1 and a ball core 21, after the ball valve works for a long time, the valve body 1 and the ball core 21 generate gaps due to friction, or when the ball valve is produced, the valve body 1 and the ball core 21 generate gaps due to the factors of product quality, the medium in the conveying pipeline can circulate into the gaps to influence the control of the ball valve on the medium flow, and even, liquid in the gaps can leak from the contact position of a rotating shaft of the ball core 21 and the valve body 1; the arrangement of the rubber layer 24 and the extrusion mechanism is convenient for blocking the gap between the ball core 21 and the valve body 1, avoiding abrasion caused by contact between the ball core 21 and the valve body 1, or avoiding the gap between the ball core 21 and the valve body 1 due to quality problem, simultaneously, after the ball core 21 rotates for a certain angle, deforming the extrusion mechanism by applying acting force to the extrusion mechanism, extruding the rubber layer 24, so that the rubber layer 24 is tightly contacted with the ball core 21, and the rubber layer 24 is in sealing contact with the ball core 21, thereby further avoiding the circulation of liquid between the valve body 1 and the ball core 21; by arranging the sealing ring 23, the ball core 21 and the valve body 1 are in sealed sliding contact preliminarily; the annular groove 11 is arranged to provide space for installing the arc-shaped plate 31, so that the sealing contact between the rubber layer 24 and the valve body 1 is prevented from being influenced by the existence of the arc-shaped plate 31; the sealing gasket 34 is arranged so as to enable the arc-shaped plate 31 to be movably connected with the annular groove 11 in a sealing way; during operation, the staff controls the rotation of the rotating shaft of the ball core 21 according to the regulation requirement of the medium flow, so that the ball core 21 rotates by a certain angle, then, the staff applies acting force to the fastening bolts 35 to enable the fastening bolts to rotate, the two adjacent end plates 33 are forced to be close to each other, and then the arc plate 31 is driven to move and squeeze the rubber layer 24, so that the rubber layer 24 is attached to the ball core 21.

Example two

Referring to fig. 5-6, a first comparative example is shown as another embodiment of the present utility model; the extrusion mechanism includes second extrusion subassembly 4, second extrusion subassembly 4 is including two arc boards 41 and two rotating disk 44 that the symmetry set up, the middle part of arc board 41 is provided with annular plate 42, the lateral wall both ends of arc board 41 all are provided with tooth socket 43, the lateral wall that two rotating disk 44 are close to each other all is provided with tooth 45, tooth 45 and tooth socket 43 meshing are connected, ring channel 11 has been seted up to valve body 1 inside wall, ring channel 11 inside wall is provided with sealing layer 12, arc board 41 is located ring channel 11, arc board 41 passes through sealing layer 12 and ring channel 11 sealing contact, circular hole 14 has been seted up to the lateral wall of valve body 1, rotating disk 44 passes through the bearing and installs in circular hole 14, polygonal groove has all been seted up to the lateral wall that two rotating disk 44 kept away from each other.

When the ball valve works, a worker controls the rotating shaft of the ball core 21 to rotate according to the regulation requirement of the medium flow so as to enable the ball core 21 to rotate by a certain angle, then, the worker applies acting force to the rotating disc 44 to enable the rotating disc 44 to rotate, and the end parts of the arc plates 41 are forced to be close to each other through the cooperation of the teeth 45 and the tooth grooves 43 so as to drive the arc plates 41 to move and squeeze the rubber layer 24, so that the rubber layer 24 is attached to the ball core 21, and the regulated ball core 21 is in sealing connection with the valve body 1; the polygonal groove is provided to facilitate the operator to hold the polygonal wrench and insert the polygonal wrench to provide space for applying force to the rotating disc 44 to rotate the same, thereby effecting movement of the arc plate 41.

Working principle: the existing ball valve is mainly applied to a conveying pipeline so as to control the smoothness of the conveying pipeline and control the medium flow in the conveying pipeline, the ball valve comprises a valve body 1 and a ball core 21, after the ball valve works for a long time, the valve body 1 and the ball core 21 generate gaps due to friction, or when the ball valve is produced, the valve body 1 and the ball core 21 generate gaps due to the factors of product quality, the medium in the conveying pipeline can circulate into the gaps to influence the control of the ball valve on the medium flow, and even, liquid in the gaps can leak from the contact position of a rotating shaft of the ball core 21 and the valve body 1; when the ball core 21 is in operation, a worker controls the rotation of the rotating shaft of the ball core 21 according to the regulation requirement of the medium flow, so that the ball core 21 rotates by a certain angle, then, the worker applies acting force to the fastening bolts 35 to enable the fastening bolts to rotate, the two adjacent end plates 33 are forced to be close to each other, and then, the arc plate 31 is driven to move and squeeze the rubber layer 24, so that the rubber layer 24 is attached to the ball core 21; or the worker applies acting force to the rotating disc 44 to enable the rotating disc 44 to rotate, and the end parts of the arc plates 41 are forced to be close to each other through the cooperation of the teeth 45 and the tooth grooves 43 so as to drive the arc plates 41 to move and squeeze the rubber layer 24, so that the rubber layer 24 is attached to the ball core 21, and the ball core 21 and the valve body 1 are in sealing connection after adjustment.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (8)

1. A leak-proof ball valve, characterized in that: including valve body (1), ball core subassembly (2) and extrusion mechanism, ball core subassembly (2) include ball core (21) and rubber layer (24), rubber layer (24) set up to spherical shell structure, rubber layer (24) parcel is in ball core (21) outside, valve body (1) set up to spherical shell structure, valve body (1) outside symmetry communicates with each other and is provided with two end pipe (22), ball core (21) are located inside valve body (1), the lateral wall of rubber layer (24) bonds with valve body (1) inside wall, two the inside wall of one end protrusion valve body (1) that end pipe (22) are close to each other, and two the one end that end pipe (22) are close to each other all is provided with sealing washer (23), sealing washer (23) seal sliding contact ball core (21)'s lateral wall, extrusion mechanism is located between valve body (1) and rubber layer (24), extrusion mechanism includes first extrusion component (3) or second extrusion component (4), extrusion mechanism is used for pressing rubber layer (24) laminating ball core (21).

2. The leak-proof ball valve of claim 1, wherein: the first extrusion assembly (3) comprises two symmetrical arc plates (31), a sleeve (32) is arranged in the middle of each arc plate (31), end plates (33) are fixedly connected to the ends of the arc plates (31), fastening bolts (35) are arranged on the upper sides of the arc plates (33) in a penetrating mode, the lower ends of the fastening bolts (35) are inserted into the end plates (33) of the arc plates (31) in a threaded mode, through holes (13) are formed in the side walls of the valve body (1), the end plates (33) penetrate through the through holes (13), and the sleeve (32) is sleeved on a rotating shaft of the ball core (21).

3. The leak-proof ball valve of claim 1, wherein: the second extrusion assembly (4) comprises two arc plates (41) and two rotating discs (44) which are symmetrically arranged, wherein a ring plate (42) is arranged in the middle of each arc plate (41), tooth sockets (43) are formed in two ends of the outer side wall of each arc plate (41), teeth (45) are formed in the side walls, close to each other, of each rotating disc (44), the teeth (45) are meshed with the tooth sockets (43), a circular hole (14) is formed in the side wall of the valve body (1), the rotating disc (44) is located in the circular hole (14), and the ring plate (42) is sleeved on the rotating shaft of the ball core (21).

4. The leak-proof ball valve of claim 2, wherein: annular groove (11) have been seted up to valve body (1) inside wall, annular groove (11) inside wall is provided with sealing layer (12), arc (31) are located annular groove (11), just arc (31) pass through sealing layer (12) and annular groove (11) sealing contact.

5. A leak-proof ball valve as defined in claim 3, wherein: the valve body (1) is characterized in that an annular groove (11) is formed in the inner side wall of the valve body (1), a sealing layer (12) is arranged on the inner side wall of the annular groove (11), the arc plate (41) is located in the annular groove (11), and the arc plate (41) is in sealing contact with the annular groove (11) through the sealing layer (12).

6. The leak-proof ball valve of claim 2, wherein: the side walls of the end plates (33) are provided with sealing gaskets (34), the sealing gaskets (34) enable the two end plates (33) to be in sealing contact, and the sealing gaskets (34) enable the end plates (33) to be in sealing contact with the through holes (13).

7. The leak-proof ball valve of claim 1, wherein: the end faces of the two end pipes (22) close to each other are of a curved surface structure, and the sealing rings (23) are fixedly adhered to the curved surface of the end pipe (22).

8. A leak-proof ball valve as defined in claim 3, wherein: the rotating discs (44) are arranged in the circular holes (14) through bearings, and polygonal grooves are formed in the side walls of the two rotating discs (44) which are far away from each other.

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