CN212775686U - Ball valve - Google Patents
Ball valve Download PDFInfo
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- CN212775686U CN212775686U CN202021259961.1U CN202021259961U CN212775686U CN 212775686 U CN212775686 U CN 212775686U CN 202021259961 U CN202021259961 U CN 202021259961U CN 212775686 U CN212775686 U CN 212775686U
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Abstract
The application provides a ball valve, including valve body and headstock gear, the valve body includes the valve casing provided with the cavity and the valve cap used for sealing the cavity, the headstock gear includes the spherical case and the valve stem used for driving the valve core to rotate, the case is located and held the cavity, one end of the valve stem far away from the case is worn out of the valve body and used for connecting with handle, there are fluid passages on the case, one end of the case far away from the valve stem is the circular plane, when the valve body is opened, the fluid passage communicates fluid inlet and fluid outlet, when the valve body is closed, the case seals fluid inlet and fluid outlet, between the inboard of fluid inlet and case, between the inboard of fluid outlet and case, there are first seal assemblies, there are second seal assemblies between valve stem outside and the valve body, the case and valve stem that this application provides are the integral structure, when the valve stem is rotated, the case, the problem of current components of a whole that can function independently design's case and valve rod use for a long time and lead to the junction to produce the clearance and influence the product precision is solved.
Description
Technical Field
The utility model belongs to the technical field of the valve technique and specifically relates to a ball valve is related to.
Background
The valve is a pipeline accessory used for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, is a control part in a fluid conveying system, and has the functions of stopping, adjusting, guiding, preventing countercurrent, stabilizing pressure, shunting or overflowing pressure relief and the like, wherein the ball valve is one type of valve, an internal spherical valve core is driven by a valve rod and rotates around the axis of the ball valve to realize the opening and closing of the ball valve, the existing ball valve comprises a valve body, a valve core and a valve rod, the valve core is arranged in the valve body, the valve rod penetrates into the valve body from the outside of the valve body to be connected with the valve core in a rotation stopping manner, because the valve core and the valve rod are connected by independent structures, a gap is generated at the joint after long-time use, the problems of incomplete closing and opening can occur under the condition of low precision requirement, and the rotation precision of, in severe cases, problems of ball drop and valve stem drop may occur.
Therefore, how to solve the problem that the valve core and the valve rod of the ball valve in the prior art are designed in a split manner, and the long-time use causes the gap at the joint to influence the precision becomes a technical problem which needs to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ball valve to the case and the valve rod that solve ball valve among the prior art are the components of a whole that can function independently design, long-time the use can cause the junction to appear the clearance and influence the problem of precision.
The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a ball valve, which comprises a valve body, a valve casing and a valve cap, wherein the valve casing is provided with a containing cavity, the valve cap is used for sealing the containing cavity, one of the valve casing and the valve cap is provided with a fluid inlet, and the other is provided with a fluid outlet;
the opening and closing device for controlling the valve body to open and close comprises a spherical valve core and a valve rod for driving the valve core to rotate, the valve core and the valve rod are of an integrated structure, the valve core is positioned in the accommodating cavity, one end, far away from the valve core, of the valve rod penetrates out of the valve body and is used for being connected with a handle, a fluid channel is arranged on the valve core, one end, far away from the valve rod, of the valve core is a circular plane, when the valve body is opened, the fluid channel is communicated with the fluid inlet and the fluid outlet, and when the valve body is closed, the valve core seals the fluid inlet and the fluid outlet;
first sealing assemblies are arranged among the inner side of the fluid inlet, the inner side of the fluid outlet and the valve core, and second sealing assemblies are arranged between the outer side of the valve rod and the valve body.
Preferably, the fluid passage is a cylindrical passage extending through the valve element, and an axis of the fluid passage is perpendicular to a rotation axis of the valve element.
Preferably, the diameter of the accommodating cavity is 1 mm larger than the outer diameter of the valve core.
Preferably, the top of the valve body is provided with a central hole which is communicated with the inner side and the outer side of the accommodating cavity, the valve rod penetrates out of the valve body through the central hole, and the inner diameter of the central hole is larger than the outer diameter of the valve rod by 4 mm.
Preferably, the first sealing component is a sealing ring, one side of the sealing ring, which is close to the valve core, is a spherical surface, and the inner diameter of the sealing ring is larger than that of the fluid channel.
Preferably, the second sealing assembly comprises a sealing bushing, a pressing ring and a locking cap, the sealing bushing, the pressing ring and the locking cap are sleeved on the outer side of the valve rod, the locking cap is in threaded connection with the valve body, and the locking cap presses the sealing bushing below the pressing ring through pressing downwards.
Preferably, the sealing bush is tapered at both ends.
Preferably, the valve body top sets up the position of centre bore is provided with the connecting cylinder, be provided with the internal thread in the connecting cylinder, the locking cap includes connecting portion and is located the installation department at connecting portion top, the installation department is hexagon sheet structure, connecting portion are the tubular structure, the connecting portion outside be provided with be used for with internal thread connection's external screw thread.
Preferably, the inner part of the connecting part is a conical surface.
Preferably, the material of the sealing bush is polytetrafluoroethylene.
The utility model provides a pair of ball valve, its beneficial effect is:
the utility model provides a ball valve, including valve body and headstock gear for controlling the valve body to open and close, the valve body includes the valve casing that is provided with the accommodation cavity and the valve cap that is used for sealing the accommodation cavity, one of them is provided with the fluid inlet with the valve cap, another is provided with the fluid outlet, the headstock gear includes spherical case and the valve rod that is used for driving the rotatory valve rod of case, case and valve rod formula structure as an organic whole, the case is located the accommodation cavity, the valve rod is kept away from case one end and is worn out the valve body and be used for connecting with the handle, be provided with fluid passage on the case, case keeps away from valve rod one end and is the circular plane, when the valve body is opened, fluid passage intercommunication fluid inlet and fluid outlet, when the valve body is closed, case seals fluid inlet and fluid outlet, be provided with first seal assembly between the, be provided with second seal assembly between the valve rod outside and the valve body, case and valve rod formula structure as an organic whole that this application provided, when the valve rod is rotatory, the case can synchronous revolution, the problem that the long-time use of case and the valve rod of having solved current components of a whole that can function independently design leads to the junction to produce the clearance and influence the product precision, the case bottom sets the circular plane into, during the installation, put into first seal assembly in the valve casing, then make headstock gear slope put into in the valve casing, the valve rod is worn out by valve body inside, then put into first seal assembly in the valve cap, be connected valve cap and valve casing, be connected second seal assembly and valve body at last, a gap for sealing between valve rod and the valve body.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a cross-sectional view of a ball valve according to an embodiment of the present invention;
fig. 2 is a sectional view of a valve body according to an embodiment of the present invention;
fig. 3 is an exploded view of a second seal assembly according to an embodiment of the present invention;
fig. 4 is a top view of the locking cap according to an embodiment of the present invention.
In the figure: 1. a valve body; 101. a valve housing; 102. a bonnet; 103. a fluid inlet; 104. a fluid outlet; 105. an accommodating space; 2. a valve core; 3. a valve stem; 4. a fluid channel; 5. a central bore; 6. a seal ring; 7. a seal bushing; 8. a compression ring; 9. a locking cap; 901. a connecting portion; 902. an installation part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
Referring to fig. 1 to 4, the present invention provides a ball valve, including a valve body 1 and an opening and closing device for controlling the opening and closing of the valve body 1, where the valve body 1 includes a valve casing 101 provided with a receiving cavity 105 and a valve cap 102 for closing the receiving cavity 105, one of the valve casing 101 and the valve cap 102 is provided with a fluid inlet 103, and the other is provided with a fluid outlet 104, for example, the fluid inlet 103 is located on the valve casing 101, the fluid outlet 104 is located on the valve cap 102, the opening and closing device includes a spherical valve core 2 and a valve rod 3 for driving the valve core 2 to rotate, the valve core 2 and the valve rod 3 are of an integral structure, the valve core 2 is located in the receiving cavity 105, one end of the valve rod 3, away from the valve core 2, penetrates out of the valve body 1 for connecting with a handle, a fluid passage 4 is provided on the valve core 2, one end of the valve, when the valve body 1 is closed, the valve core 2 seals the fluid inlet 103 and the fluid outlet 104, a first sealing assembly is arranged between the inner side of the fluid inlet 103 and the valve core 2, a first sealing assembly is arranged between the inner side of the fluid outlet 104 and the valve core 2, and a second sealing assembly is arranged between the outer side of the valve rod 3 and the valve body 1, the valve core 2 and the valve rod 3 provided by the application are of an integrated structure, when the valve rod 3 rotates, the valve core 2 can synchronously rotate, the problem that the product precision is affected due to the fact that a gap is generated at a connecting part of the valve core 2 and the valve rod 3 which are designed in a split mode for a long time is solved, the bottom of the valve core 2 is arranged into a circular plane, during installation, the first sealing assembly is placed in the valve casing 101, then the opening and closing device is obliquely placed in the valve casing 101, the valve rod 3 penetrates out of the valve body 1, then the first sealing assembly, for closing the gap between the valve stem 3 and the valve body 1.
As an alternative embodiment, the fluid passage 4 is a cylindrical passage penetrating through the valve element 2, the axis of the fluid passage 4 is perpendicular to the rotation axis of the valve element 2, when the valve body 1 is opened, the fluid passage 4 is communicated with the fluid inlet 103 and the fluid outlet 104, and when the valve body 1 is closed, the outer spherical surface of the part of the valve element 2 where the fluid passage 4 is not arranged seals the fluid inlet 103 and the fluid outlet 104.
In order to enable the opening and closing device to be obliquely placed into the accommodating cavity 105, a certain gap needs to be formed between the inner wall of the accommodating cavity 105 and the outer side wall of the valve core 2, the accommodating cavity 105 can be a cylindrical cavity, and the inner diameter of the accommodating cavity 105 can be larger than the outer diameter of the valve core 2 by 1 mm.
Further, the top of the valve body 1 may be provided with a central hole 5 communicating the inside and the outside of the accommodating cavity 105, the valve rod 3 penetrates through the valve body 1 through the central hole 5, in order to enable the valve rod 3 to penetrate through the valve body 1 obliquely, the inner diameter of the central hole 5 needs to be larger than the outer diameter of the valve rod 3, and the inner diameter of the central hole 5 may be larger than the outer diameter of the valve rod 3 by 4 mm.
The first sealing assembly described above has two functions, firstly to secure the cartridge 2 in the housing cavity 105, secondly to prevent water from entering the housing cavity 105 outside the cartridge 2, the first sealing assembly is two sealing rings 6, one is arranged between the valve core 2 and the fluid inlet 103, the other is arranged between the valve core 2 and the fluid outlet 104, the fluid inlet 103 can be positioned on the valve casing 101, the fluid outlet 104 can be positioned on the valve cap 102, the inner diameter of the sealing ring 6 can be equal to the inner diameter of the fluid passage 4, the outer diameter of the sealing ring 6 is larger than the inner diameter of the fluid passage 4, the side of the sealing ring 6 close to the valve core 2 is a spherical surface, the bulb of the spherical surface can be equal to or slightly smaller than that of the valve core 2, so that the sealing ring 6 can be filled in a gap between the valve core 2 and the inner wall of the valve casing 101, and one side of the sealing ring 6, which is close to the valve core 2, can be tightly attached to the valve core 2 to realize sealing.
Foretell second seal assembly can establish the sealing bush 7 in the valve rod 3 outside including the cover, clamp ring 8 and locking cap 9, during the installation, put into sealing bush 7 earlier, establish sealing bush 7 cover and push to case 2 direction on the valve rod 3, then place clamp ring 8, locking cap 9 and 1 threaded connection of valve body at last, rotatory locking cap 9, locking cap 9 is to being close to 2 direction movements of case, promote clamp ring 8 and compress tightly sealing bush 7 between clamp ring 8 and valve body 1, sealing bush 7 can seal the gap between valve rod 3 and the centre bore 5, prevent to leak.
Furthermore, the sealing bush 7 is made of soft materials, two ends of the sealing bush 7 can be provided with conical structures, when the sealing bush 7 is placed into, the conical structures at the bottom of the sealing bush 7 are embedded into a gap between the valve rod 3 and the central hole 5, then the pressing ring 8 is pressed downwards through the locking cap 9, the pressing ring 8 presses the sealing bush 7 downwards, and the sealing bush 7 is deformed and tightly filled between the central hole 5 and the valve rod 3.
In the implementation, the position that foretell valve body 1 top was provided with centre bore 5 is provided with the connecting cylinder, is provided with the internal thread in the connecting cylinder, and locking cap 9 includes connecting portion 901 and installation department 902, and installation department 902 is hexagon sheet structure, can with current instrument cooperation, and it is rotatory to drive by the instrument, and connecting portion 901 is the tubular structure, and the outside is provided with the external screw thread, is connected with the internal thread cooperation in the connecting cylinder.
The inside of the connecting portion 901 may be a conical surface, the outer diameter of the pressing ring 8 may be smaller than the inner diameter of the bottom end of the connecting portion 901, and the pressing ring 8 contacts with the conical surface.
The sealing bush 7 can be made of polytetrafluoroethylene, is formed by a die-splitting method at normal temperature, and then is sintered and cooled, and has the excellent characteristics of high and low temperature resistance, corrosion resistance, weather resistance, high insulation, high sealing, high lubrication, no adhesion, ageing resistance, no toxicity and the like.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A ball valve, comprising:
a valve body (1) comprising a valve housing (101) provided with a receiving cavity (105) and a valve cap (102) for closing the receiving cavity (105), one of the valve housing (101) and the valve cap (102) being provided with a fluid inlet (103) and the other with a fluid outlet (104);
the opening and closing device for controlling the valve body (1) to open and close comprises a spherical valve core (2) and a valve rod (3) for driving the valve core (2) to rotate, the valve core (2) and the valve rod (3) are of an integrated structure, the valve core (2) is located in the accommodating cavity (105), one end, far away from the valve core (2), of the valve rod (3) penetrates out of the valve body (1) and is used for being connected with a handle, a fluid channel (4) is arranged on the valve core (2), one end, far away from the valve rod (3), of the valve core (2) is a circular plane, when the valve body (1) is opened, the fluid channel (4) is communicated with the fluid inlet (103) and the fluid outlet (104), and when the valve body (1) is closed, the valve core (2) seals the fluid inlet (103) and the fluid outlet (104);
first sealing assemblies are arranged between the inner sides of the fluid inlet (103) and the fluid outlet (104) and the valve core (2), and second sealing assemblies are arranged between the outer side of the valve rod (3) and the valve body (1).
2. The ball valve according to claim 1, characterized in that the fluid channel (4) is a cylindrical channel through the spool (2), the axis of the fluid channel (4) being perpendicular to the axis of rotation of the spool (2).
3. The ball valve according to claim 1, characterized in that the diameter of the housing cavity (105) is greater than 1 mm of the outer diameter of the spool (2).
4. The ball valve according to claim 1, characterized in that the top of the valve body (1) is provided with a central hole (5) communicating the inner side and the outer side of the accommodating cavity (105), the valve rod (3) penetrates out of the valve body (1) through the central hole (5), and the inner diameter of the central hole (5) is 4 mm larger than the outer diameter of the valve rod (3).
5. The ball valve according to claim 1, wherein the first sealing component is a sealing ring (6), one side of the sealing ring (6) close to the valve core (2) is a spherical surface, and the inner diameter of the sealing ring (6) is larger than that of the fluid passage (4).
6. The ball valve according to claim 4, characterized in that the second sealing assembly comprises a sealing bushing (7) sleeved outside the valve rod (3), a pressing ring (8) and a locking cap (9), the locking cap (9) is in threaded connection with the valve body (1), and the locking cap (9) presses the sealing bushing (7) below by pressing down the pressing ring (8).
7. A ball valve according to claim 6, characterized in that the sealing bush (7) is conical at both ends.
8. The ball valve according to claim 6, wherein a connecting cylinder is arranged at the position of the top of the valve body (1) where the central hole (5) is arranged, internal threads are arranged in the connecting cylinder, the locking cap (9) comprises a connecting part (901) and a mounting part (902) arranged at the top of the connecting part (901), the mounting part (902) is in a hexagonal sheet structure, the connecting part (901) is in a cylindrical structure, and external threads for connecting with the internal threads are arranged on the outer side of the connecting part (901).
9. The ball valve according to claim 8, characterized in that the connection portion (901) is internally tapered.
10. A ball valve according to claim 6, characterized in that the material of the sealing bush (7) is polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021259961.1U CN212775686U (en) | 2020-07-01 | 2020-07-01 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021259961.1U CN212775686U (en) | 2020-07-01 | 2020-07-01 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775686U true CN212775686U (en) | 2021-03-23 |
Family
ID=75086799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021259961.1U Active CN212775686U (en) | 2020-07-01 | 2020-07-01 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046853A (en) * | 2021-11-29 | 2022-02-15 | 三一汽车制造有限公司 | Level gauge fixing base, stock bin equipment and agitated vessel |
-
2020
- 2020-07-01 CN CN202021259961.1U patent/CN212775686U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046853A (en) * | 2021-11-29 | 2022-02-15 | 三一汽车制造有限公司 | Level gauge fixing base, stock bin equipment and agitated vessel |
| CN114046853B (en) * | 2021-11-29 | 2023-09-26 | 三一汽车制造有限公司 | Material level gauge fixing seat, feed bin equipment and stirring equipment |
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