An integrated ball valve

Abstract

The utility model discloses an integrated ball valve relates to valve technical field. The utility model provides an integrated ball valve, including valve body and valve ball, and valve body has the accommodation chamber, and valve ball rotates and is installed in the accommodation chamber, and the both sides of valve body are all seted up with the flow channel, and two flow channels all are linked with the accommodation chamber, and valve ball sets up the through hole, and the accommodation chamber has the sealing cavity wall, and installs the assembly and can press the valve ball to the sealing cavity wall. Through rotating valve ball, make the through hole and two flow channels communicate or disconnect, to realize the opening and closing of ball valve, still through setting up the sealing cavity wall, and the sealing cavity wall and valve ball abutment realize the sealing of valve ball, through the sealing cavity wall of valve body itself forms the form of valve ball sealing, need not set up the valve seat between valve body and valve ball to realize the sealing of valve ball, and then avoid the phenomenon that sealing failure is easy to produce between valve seat and valve body and between valve seat and valve ball, namely through discarding the valve seat, reduces the matching point of easy to produce leakage risk, improves the sealing strength of integrated ball valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an integrated ball valve. Background Technology

[0002] As the types of materials transported through pipelines increase, the adaptability of ball valves to the environment also gradually increases. For example, high temperature and high pressure environments affect the sealing of ball valves, and general sealing devices are not very suitable for temperatures above 300°C, which can easily lead to material leakage and even pose a risk of major accidents.

[0003] Currently, most valves on the market use a split-type valve seat, with two valve seats installed in the valve body and the valve ball abutting against each seat. When the temperature difference exceeds 150°C, the difference in the coefficient of thermal expansion can easily cause changes in the gap between the valve ball and the valve seat, damaging the sealing pressure. In addition, high-pressure and high-speed fluids (especially media containing solid particles) will aggravate the erosion and wear of the valve seat sealing surface, forming grooves or pits. Vibration can also cause the seal between the valve ball and the valve seat to fail, leading to material leakage.

[0004] Therefore, it is urgent to propose a solution to the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an integrated ball valve to solve the problem of easy sealing failure in existing valves.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An integrated ball valve includes a valve body and a valve ball. The valve body has a receiving cavity, and the valve ball is rotatably mounted in the receiving cavity. Flow channels are provided on both sides of the valve body, and both flow channels communicate with the receiving cavity. The valve ball has a through hole, and rotation of the valve ball can connect or disconnect the through hole from the two flow channels. The receiving cavity has a sealing cavity wall, which abuts against the valve ball. An installation assembly is also provided in the receiving cavity, and the installation assembly abuts between the valve ball and the inner wall of the receiving cavity, and the installation assembly can press the valve ball against the sealing cavity wall.

[0008] In some embodiments, the accommodating cavity includes a first sub-cavity, a second sub-cavity, and a third sub-cavity connected in sequence. The first sub-cavity is connected to one of the flow channels, the third sub-cavity is connected to another flow channel, the mounting assembly is installed in the third sub-cavity, and the cavity wall of the first sub-cavity forms the sealing cavity wall.

[0009] In some embodiments, the first sub-cavity is frustum-shaped, and the small end of the first sub-cavity is connected to a flow channel.

[0010] In some embodiments, the sealed cavity wall is lined with a wear-resistant alloy layer.

[0011] In some embodiments, the wear-resistant alloy layer is a WC, CrC, STL, NI60, or NI55 component.

[0012] In some embodiments, the mounting assembly includes a valve seat and an elastic element, the valve seat abutting against the valve ball, and the elastic element abutting between the valve seat and the inner wall of the receiving cavity.

[0013] In some embodiments, a filler is provided between the valve seat and the elastic element.

[0014] In some embodiments, the valve seat and the elastic element are both coaxially provided with a connecting hole, which can connect the through hole and a flow channel.

[0015] In some embodiments, a rotating shaft is provided on one side of the accommodating cavity, the valve ball has a rotating groove, the rotating shaft is inserted into the rotating groove, and the axis of the rotating shaft and the rotating groove are perpendicular to the axis of the through hole.

[0016] In some embodiments, an operating hole is provided on the other side of the accommodating cavity, and the integrated ball valve further includes a valve stem that can be inserted into the operating hole and connected to the valve ball.

[0017] The beneficial effects of this utility model are:

[0018] This utility model proposes an integrated ball valve, comprising a valve body and a valve ball. The valve body has a receiving cavity, and the valve ball is rotatably installed in the receiving cavity. Flow channels are provided on both sides of the valve body, and both flow channels are connected to the receiving cavity. The valve ball has a through hole, and the rotation of the valve ball can connect or disconnect the through hole with the two flow channels. The receiving cavity has a sealing cavity wall, which abuts against the valve ball. An installation component is also provided in the receiving cavity, which abuts between the valve ball and the inner wall of the receiving cavity, and the installation component can press the valve ball against the sealing cavity wall. By rotating the valve ball, the through hole can be connected or disconnected from the two flow channels, thereby opening and closing the ball valve. Furthermore, a sealing cavity wall is provided, which abuts against the valve ball to achieve a seal. This valve ball sealing method, where the valve body itself forms a sealing cavity wall, eliminates the need for valve seats on both sides of the valve body and valve ball. This avoids the possibility of sealing failure between the valve seat and valve body, or between the valve seat and valve ball on one side. In other words, by eliminating one valve seat, the number of mating points prone to leakage is reduced. Simultaneously, eliminating one valve seat also avoids sealing failure caused by the difference in thermal expansion coefficients between the valve seat and valve body on that side, thus improving the sealing strength of the integrated ball valve. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an integrated ball valve proposed in an embodiment of this utility model.

[0021] In the picture:

[0022] 100. Flow channel;

[0023] 1. Valve body; 11. First sub-chamber; 111. Sealing chamber wall; 2. Valve ball; 21. Through hole; 3. Mounting assembly; 31. Valve seat; 311. Outer expansion; 32. Elastic element; 33. Packing; 4. Rotary shaft. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0028] This embodiment proposes an integrated ball valve to solve the problem of easy valve sealing failure in the prior art.

[0029] like Figure 1 As shown, an integrated ball valve includes a valve body 1 and a valve ball 2. The valve body 1 has a receiving cavity, and the valve ball 2 is rotatably installed in the receiving cavity. Flow channels 100 are provided on both sides of the valve body 1, and both flow channels 100 are connected to the receiving cavity. The valve ball 2 has a through hole 21. Rotation of the valve ball 2 can connect or disconnect the through hole 21 from the two flow channels 100. The receiving cavity has a sealing cavity wall 111, which abuts against the valve ball 2. An installation component 3 is also provided in the receiving cavity. The installation component 3 abuts between the valve ball 2 and the inner wall of the receiving cavity, and the installation component 3 can press the valve ball 2 against the sealing cavity wall 111.

[0030] Understandably, the integrated ball valve proposed in this embodiment achieves opening and closing by rotating the valve ball 2 to connect or disconnect the guide hole 21 with the two flow channels 100. Furthermore, by setting a sealing cavity wall 111, which abuts against the valve ball 2, the valve ball 2 is sealed. This sealing method, where the valve body 1 itself forms the sealing cavity wall 111, eliminates the need for valve seats 31 on both sides of the valve body 1 and valve ball 2. This avoids the possibility of sealing failure between the valve seat 31 and valve body 1, or between the valve seat 31 and valve ball 2 on one side. In other words, by eliminating one side of the valve seat 31, the number of mating points prone to leakage risk is reduced. Simultaneously, eliminating one side of the valve seat 31 also avoids sealing failure caused by the difference in thermal expansion coefficients between the valve seat 31 and valve body 1 on that side, thus improving the sealing strength of the integrated ball valve.

[0031] In some embodiments, the accommodating cavity includes a first sub-cavity 11, a second sub-cavity, and a third sub-cavity connected in sequence. The first sub-cavity 11 is connected to a flow channel 100, and the third sub-cavity is connected to another flow channel 100. An installation assembly 3 is installed in the third sub-cavity, and the cavity wall of the first sub-cavity 11 forms a sealing cavity wall 111. Understandably, when the valve ball 2 is not installed in the accommodating cavity, the flow channel 100 is connected to the first sub-cavity, the second sub-cavity, and the third sub-cavity in sequence, and then to another flow channel 100. When the valve ball 2 is installed in the accommodating cavity, the installation assembly 3 in the third sub-cavity presses the valve ball 2 against the cavity wall of the first sub-cavity 11, and the cavity wall of the first sub-cavity 11 forms a sealing cavity wall 111 to achieve sealing of the valve ball 2. Sealing can be achieved without setting a valve seat 31 on the side of the valve ball 2 away from the installation assembly 3, reducing leakage points and thus improving the sealing performance of the integrated ball valve.

[0032] In some embodiments, the first sub-cavity 11 is frustum-shaped, and the small end of the first sub-cavity 11 is connected to a flow channel 100. This arrangement makes the cavity wall of the first sub-cavity 11 beveled, which is beneficial to adapt to the shape of the valve ball 2, thereby improving the sealing strength between the sealing cavity wall 111 and the valve ball 2.

[0033] In some embodiments, the sealing cavity wall 111 is provided with a wear-resistant alloy layer. This arrangement improves the wear resistance and durability of the sealing cavity wall 111, thereby enhancing the reliability and sealing strength of the integrated valve ball 2.

[0034] In some embodiments, the wear-resistant alloy layer is made of WC (tungsten carbide), CrC (chromium carbide), STL (cobalt-based), NI60 (nickel-based alloy), or NI55 (nickel-chromium-boron-silicon alloy). WC, CrC, STL, NI60, or NI55 components possess high strength, corrosion resistance, and wear resistance, further enhancing the reliability and sealing strength of the integrated valve ball 2.

[0035] Of course, in other embodiments, the wear-resistant alloy layer can also be made of other materials, which can be set as needed according to the application environment. This embodiment does not impose too many restrictions.

[0036] In some embodiments, the mounting assembly 3 includes a valve seat 31 and an elastic element 32. The valve seat 31 abuts against the valve ball 2, and the elastic element 32 abuts between the valve seat 31 and the inner wall of the receiving cavity. This arrangement allows the elastic element 32 to press the valve ball 2 against the sealing cavity wall 111, and the elastic element 32 can generate a pre-tightening force on the valve ball 2, thereby improving the sealing performance of the valve ball 2. In addition, providing the valve seat 31 only on one side of the valve ball 2 ensures both the sealing performance of the valve seat 31 for the valve ball 2 and the wear resistance of the valve seat 31, while avoiding the defect of too many leakage points when valve seats 31 are provided on both sides, effectively improving the structural rationality of the integrated valve ball 2.

[0037] For example, the elastic element 32 is a disc spring. Disc springs have high stiffness and strong damping and vibration absorption capabilities, and can withstand large loads with small deformations, thus improving the reliability of the elastic element 32.

[0038] Of course, in other embodiments, the elastic element 32 can also be of other types. It can be set as needed according to the actual situation. This embodiment does not impose too many restrictions.

[0039] In some embodiments, a packing 33 is provided between the valve seat 31 and the elastic element 32. This arrangement can improve the sealing performance by filling the gap between the valve seat 31 and the elastic element 32 with the packing 33. In addition, the compressibility of the packing 33 can also create a preload on the valve seat 31, further preventing the valve ball 2 from failing.

[0040] For example, the packing 33 is graphite packing. Graphite packing has high elasticity and heat resistance, which improves the sealing performance and durability of the integrated valve ball 2.

[0041] Of course, in other embodiments, the filler 33 can also be of other types, and can be set as needed according to the application scenario. This embodiment does not impose too many restrictions.

[0042] In some embodiments, both the valve seat 31 and the elastic element 32 are coaxially provided with a connecting hole, which connects the through hole 21 and the flow channel 100. This arrangement not only allows the valve seat 31 and the elastic element 32 to apply pressure to the valve ball 2 in a ring-shaped contact, improving the stress stability of the valve ball 2, but also avoids interference with the connection between the flow channel 100 and the through hole 21, thus improving the structural rationality of the integrated ball valve.

[0043] For example, both the valve seat 31 and the elastic element 32 are annular. The elastic element 32 is sleeved on the outer periphery of the valve seat 31. The side of the valve seat 31 away from the elastic element 32 has an outwardly flared portion 311, and a packing 33 is filled between the outwardly flared portion 311 and the elastic element 32. With this arrangement, the elastic force of the elastic element 32 can be transmitted to the outwardly flared portion 311 through the packing 33, thereby forming a clamping effect on the valve ball 2 and improving the sealing performance of the valve ball 2.

[0044] In some embodiments, a rotating shaft 4 is provided on one side of the accommodating cavity, and the valve ball 2 has a rotating groove. The rotating shaft 4 is inserted into the rotating groove, and the axis of the rotating shaft 4 and the rotating groove are perpendicular to the axis of the through hole 21. This arrangement can improve the stability of the valve ball 2 when rotating, while preventing the valve ball 2 from displacing, thereby improving the sealing performance of the integrated ball valve.

[0045] In some embodiments, an operating hole is provided on the other side of the receiving cavity, and the integrated ball valve also includes a valve stem that can be inserted into the operating hole and connected to the valve ball 2. The valve stem allows for easier rotation of the valve ball 2, improving operational convenience. For example, a grip is provided at the end of the valve stem away from the valve ball 2, allowing the operator to rotate the valve stem by gripping the grip, further enhancing operational convenience.

[0046] It is worth noting that the valve body 1 includes a left valve body portion and a right valve body portion, which are joined together to form the valve body 1. Both the left and right valve body portions have grooves for communicating flow channels 100, and the grooves on both sides are joined together to form a receiving cavity. One flow channel 100 is located in the left valve body portion, and the other flow channel 100 is located in the right valve body portion. The elastic element 32, the packing 33, and the valve seat 31 are all installed in the right valve body portion. The left and right valve body portions are fastened together by bolts.

[0047] The assembly process of the integrated ball valve provided in this embodiment is as follows:

[0048] First, remove the bolts between the left and right valve bodies to separate them. Then, install the elastic element 32, packing 33, and valve seat 31 onto the right valve body in sequence, and place the valve ball 2 onto the valve seat 31. Next, align the left and right valve bodies together. The elastic element 32 will be gradually compressed. After alignment, the valve ball 2 will be located in the accommodating cavity and pressed against the sealing cavity wall 111 by the valve seat 31.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An integrated ball valve, characterized in that, The device includes a valve body (1) and a valve ball (2). The valve body (1) has a receiving cavity, and the valve ball (2) is rotatably installed in the receiving cavity. Flow channels (100) are provided on both sides of the valve body (1), and both flow channels (100) are connected to the receiving cavity. The valve ball (2) has a through hole (21). The valve ball (2) can be rotated to make the through hole (21) connect or disconnect with the two flow channels (100). The receiving cavity has a sealing cavity wall (111), and the sealing cavity wall (111) abuts against the valve ball (2). An installation assembly (3) is also provided in the receiving cavity. The installation assembly (3) abuts between the valve ball (2) and the inner wall of the receiving cavity. The installation assembly (3) can press the valve ball (2) against the sealing cavity wall (111).

2. The integrated ball valve according to claim 1, characterized in that, The accommodating cavity includes a first sub-cavity (11), a second sub-cavity, and a third sub-cavity connected in sequence. The first sub-cavity (11) is connected to one of the flow channels (100), and the third sub-cavity is connected to another flow channel (100). The mounting assembly (3) is installed in the third sub-cavity, and the cavity wall of the first sub-cavity (11) forms the sealing cavity wall (111).

3. The integrated ball valve according to claim 2, characterized in that, The first sub-cavity (11) is frustum shaped, and the small end of the first sub-cavity (11) is connected to a flow channel (100).

4. The integrated ball valve according to claim 1, characterized in that, The sealed cavity wall (111) is covered with a wear-resistant alloy layer.

5. The integrated ball valve according to claim 4, characterized in that, The wear-resistant alloy layer is made of WC, CrC, STL, NI60, or NI55.

6. The integrated ball valve according to claim 1, characterized in that, The mounting assembly (3) includes a valve seat (31) and an elastic element (32), wherein the valve seat (31) abuts against the valve ball (2) and the elastic element (32) abuts between the valve seat (31) and the inner wall of the receiving cavity.

7. The integrated ball valve according to claim 6, characterized in that, The valve seat (31) and the elastic element (32) are filled with filler (33).

8. The integrated ball valve according to claim 6, characterized in that, Both the valve seat (31) and the elastic element (32) are coaxially provided with a connecting hole, which can connect the through hole (21) and a flow channel (100).

9. The integrated ball valve according to claim 1, characterized in that, A rotating shaft (4) is provided on one side of the accommodating cavity. The valve ball (2) has a rotating groove. The rotating shaft (4) is inserted into the rotating groove, and the axis of the rotating shaft (4) and the rotating groove are perpendicular to the axis of the through hole (21).

10. The integrated ball valve according to claim 9, characterized in that, An operating hole is provided on the other side of the accommodating cavity. The integrated ball valve also includes a valve stem, which can be inserted into the operating hole and connected to the valve ball (2).

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