Flange ball valve

Abstract

The present invention discloses a flange ball valve, including a valve body, a valve seat, a valve cover, a valve stem, a flange and a limiting mechanism. The valve body is provided with a valve cavity, the valve body is provided with a channel connected with the valve cavity, and a sphere with a through hole is movably arranged in the valve cavity; two valve seats are provided, and the valve seats are located between the sphere and the valve body; the valve cover is plug-in connected with one end of the valve body, and one end of the valve cover abuts against the valve seat; the valve stem is passed through the channel and linked with the sphere; the flange is sleeved on the other end of the valve body and can rotate relative to the valve body; the limiting mechanism is provided between the valve body and the flange, and the limiting mechanism can limit the flange from moving forward and backward relative to the valve body during the rotation process. The flange is rotated, and the flange hole of the flange and the flange hole of the material pipeline complete the hole matching work, which is simple to operate, does not need to move or rotate the storage tank, and saves time and effort; the limiting mechanism can limit the flange from moving forward and backward relative to the valve body during the rotation process, has good stability, and is not easy to loosen.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, and in particular to a flange ball valve. Background Art

[0002] At present, flange ball valves are usually provided on some storage tanks for transporting chemical raw materials, etc. The flange ball valve is used to cooperate with the material pipeline, control the pipeline on and off, and load and unload materials. Since there are multiple flange holes on the flange ball valve, during the loading and unloading process, the flange hole of the flange ball valve needs to be completely docked with the flange hole on the material pipeline before the material can be loaded and unloaded. In the past, it always took many adjustments to complete the flange hole alignment work, and since the position of the flange hole on the loading and unloading material pipeline is fixed, it is necessary to adjust the position of the flange hole of the flange ball valve on the storage tank to correspond to the installation, resulting in each adjustment process. The storage tank needs to be moved or rotated many times, which is inconvenient to operate and time-consuming and laborious. In order to solve the above problems, the existing flange is connected to the valve body by threaded rotation. However, as the use time becomes longer, the thread lines between the flange and the valve body are easily worn, resulting in the unstable connection between the flange and the valve body, a short service life, or the flange is easily loosened relative to the valve body during the rotation adjustment process. Summary of the invention

[0003] The object of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a flange ball valve, wherein the flange of the flange ball valve is not easily loosened from the valve body during adjustment.

[0004] A flange ball valve according to an embodiment of the present invention comprises: a valve body, wherein the valve body has a valve cavity, the valve body is provided with a channel connected to the valve cavity, and a ball with a through hole is movably arranged in the valve cavity; a valve seat, wherein two valve seats are provided, the two valve seats are symmetrically arranged on both sides of the valve cavity, and the valve seat is located between the ball and the valve body; a valve cover, wherein the valve cover is plug-connected to one end of the valve body, and the end of the valve cover abuts against the valve seat; a valve stem, wherein the valve stem is passed through the channel and is linked to the ball; a flange, wherein the flange is sleeved on the other end of the valve body and can rotate relative to the valve body; a limiting mechanism, wherein the limiting mechanism is provided between the valve body and the flange, and the limiting mechanism can limit the flange from moving forward and backward relative to the valve body during the rotation process.

[0005] The flange ball valve according to the embodiment of the present invention has at least the following technical effects: during the assembly of the flange ball valve, one end of the valve body is fixedly connected to the material storage tank, and the other end of the valve body is rotatably provided with a flange. By rotating the flange of the flange ball valve installed on the material storage tank, the flange hole on the flange and the flange hole of the material pipeline are aligned, which is simple to operate and does not require moving or rotating the material storage tank, saving time and effort; at the same time, a limiting mechanism is provided to limit the forward and backward movement of the flange relative to the valve body during the rotation process, which has good stability and is not prone to loosening.

[0006] According to some embodiments of the present invention, the limiting mechanism includes a limiting groove and a limiting member slidably connected to the limiting groove, the limiting groove is provided on one of the valve body and the flange, and the limiting member is provided on the other of the valve body and the flange.

[0007] According to some embodiments of the present invention, the limiting member is a threaded rod.

[0008] According to some embodiments of the present invention, a handle that cooperates with the valve stem is provided on the valve stem.

[0009] According to some embodiments of the present invention, a locking mechanism for limiting the rotation angle of the handle is provided between the valve body and the handle.

[0010] According to some embodiments of the present invention, the valve body has a boss, and the channel is opened on the boss; the locking mechanism includes a locking block and at least two stop notches, the locking block can be slidably arranged on the handle, at least two of the stop notches are opened on the boss, and the locking block has a first convex portion that cooperates with the stop notch.

[0011] According to some embodiments of the present invention, a mounting hole is formed on the boss, a positioning piece is detachably connected to the mounting hole, and one side of the front end of the handle has a second protrusion that cooperates with the positioning piece.

[0012] According to some embodiments of the present invention, a packing located in the channel is provided between the valve body and the valve stem, and a gland assembly for compressing the packing is sleeved on the valve stem.

[0013] According to some embodiments of the present invention, the gland assembly includes a wear-resistant plate located above the packing, a glam located above the wear-resistant plate, a butterfly spring located above the glam, a valve stem nut located above the butterfly spring, and an anti-loosening gasket located between the valve stem nut and the handle.

[0014] According to some embodiments of the present invention, a sealing ring is provided between the valve cover and the valve body.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 2 is a schematic diagram of the structure of a flange ball valve according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Another perspective structural diagram of the flange ball valve shown;

[0019] Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle;

[0020] Figure 4 yes Figure 1 The cross-sectional diagram of the flange ball valve shown;

[0021] Figure 5 yes Figure 1 The exploded view of the flange ball valve is shown.

[0022] Reference numerals:

[0023] Valve body 10, valve cavity 11, valve seat 12, valve cover 13, valve stem 14, limit nut 141, boss 15, stop notch 151, mounting hole 152, packing 16;

[0024] Sphere 20, flange 30;

[0025] Limiting mechanism 40, limiting slide groove 41, limiting member 42;

[0026] The handle 50, the lock block 51, the first protrusion 511, the second lock hole 512, the first lock hole 52, and the second protrusion 53;

[0027] Wear-resistant sheet 61, Glam 62, butterfly spring 63, valve stem nut 64, anti-loosening washer 65;

[0028] Sealing ring 70. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the description of directions, such as up, down, front, back, etc., are based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] If the first and second are described, they are only used to distinguish the technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0032] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be plug-in connected, detachably connected, or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0033] Reference Figure 1 As shown, the flange ball valve according to an embodiment of the present invention includes a valve body 10.

[0034] Reference Figures 1 to 5 As shown, a valve cavity 11 is provided in the valve body 10, a passage communicating with the valve cavity 11 is provided on the valve body 10, and a ball 20 with a through hole is movably provided in the valve cavity 11; a valve seat 12, two valve seats 12 are provided, and the two valve seats 12 are symmetrically provided on both sides of the valve cavity 11, and the valve seat 12 is located between the ball 20 and the valve body 10; a valve cover 13, the valve cover 13 is plug-connected with one end of the valve body 10, and one end of the valve cover 13 abuts against the valve seat 12; a valve stem 14, the valve stem 14 is penetrated in the passage and linked with the ball 20; a flange 30, the flange 30 is sleeved on the other end of the valve body 10 and can rotate relative to the valve body 10; a limiting mechanism 40, the limiting mechanism 40 is provided between the valve body 10 and the flange 30, and the limiting mechanism 40 can limit the flange 30 from moving back and forth relative to the valve body 10 during the rotation process.

[0035] It should be noted that one end of the valve body 10 has a flange portion for connecting to a storage tank, the valve cover 13 is inserted into the flange portion of the valve body 10 and one end of the valve cover 13 abuts against the valve seat 12, and the valve cover 13 and the valve body 10 are connected by threads; a sealing ring 70 is arranged between the valve cover 13 and the valve body 10. Of course, in some embodiments, a sealing ring 70 is also arranged between the valve seat 12 and the valve body 10 to enhance the sealing performance.

[0036] According to the flange ball valve of the embodiment of the present invention, during the assembly of the flange ball valve, the flange 30 is rotatably connected to one end of the valve body 10. By rotating the flange 30 of the flange ball valve installed on the storage tank, the flange 30 hole on the flange 30 and the flange 30 hole of the material pipeline are aligned, which is simple to operate and does not require moving or rotating the storage tank, saving time and effort; at the same time, a limiting mechanism 40 is provided to limit the forward and backward movement of the flange 30 relative to the valve body 10 during the rotation process, which has good stability and is not prone to loosening.

[0037] Reference Figure 4 As shown, in an embodiment of the present invention, the limiting mechanism includes a limiting slot 41 and a limiting member 42 slidably connected to the limiting slot 41, the valve body 10 is provided with a limiting slot 41, and the flange 30 is provided with a limiting member 42. When the flange 30 rotates relative to the valve body 10, the limiting member 42 slides relative to the limiting slot 41, and limits the front-to-back misalignment between the flange 30 and the valve body 10, and the structure is simple and the design is reasonable. Of course, in some embodiments, the flange 30 is provided with a limiting slot 41, and the valve body 10 is provided with a limiting member 42, which still has the above-mentioned technical effects. It can be understood that in an embodiment of the present invention, the limiting slot 41 is transversely provided on the valve body 10 or the flange 30, and the limiting slot 41 is arranged parallel to the end face of the valve body 10 or the end face of the flange 30.

[0038] In the embodiment of the present invention, the limit member 42 is a threaded rod. When the limit slot 41 is provided on the valve body 10, the threaded rod is threadedly connected to the flange 30 and one end of the threaded rod extends into the limit slot 41; when the limit slot 41 is provided on the flange 30, the threaded rod is inserted into the limit slot 41 and one end of the threaded rod is threadedly connected to the valve body 10. It is conceivable that the threaded rod is a bolt. Of course, in some of the embodiments, the limit member 42 can also be set as a pin shaft, etc., which still has the above-mentioned technical effects.

[0039] It should be noted that in the implementation of the present invention, the slotting angle range of the limiting slide groove 41 is 101° to 104°, and the rotation range of the limiting member 42 in the limiting slide groove 41 is 92° to 95°. Of course, the slotting angle range can also be set to other values ​​according to the rotation angle requirements of the flange 30, which is not limited here.

[0040] Of course, in some embodiments, the limiting mechanism includes a cam and a slot, the flange 30 is composed of two half flanges connected by bolts, the inner walls of the two half flanges are provided with cams, one end of the valve body 10 has a slot, when installed, the two half flanges are installed at one end of the valve body 10, and the cam is engaged in the slot and the two half flanges are fixedly connected by bolts. In some embodiments, the inner walls of the two half flanges are provided with slots, and one end of the valve body 10 has a cam, which still has the above-mentioned technical effects.

[0041] Reference Figures 1 to 5 As shown, in the embodiment of the present invention, a handle 50 is provided on the valve stem 14 and cooperates with the valve stem 14 to facilitate the rotation of the valve stem 14. It should be noted that a limit nut for limiting the movement of the handle 50 is threadedly connected to the end of the valve stem 14, and the limit nut abuts against the handle 50 to prevent the handle 50 from slipping.

[0042] Reference Figures 1 to 5 As shown, in some embodiments of the present invention, a locking mechanism for limiting the rotation of the handle 50 is provided between the valve body 10 and the handle 50 to avoid the handle 50 from rotating too much. In a specific embodiment, the valve body 10 has a boss 15, and a channel is provided on the boss 15; the locking mechanism includes a locking block 51 and two stop notches 151, the locking block 51 can be slidably provided on the handle 50, the two stop notches 151 are provided on the boss 15, and the locking block 51 has a first convex portion 511 that cooperates with the stop notches 151. It should be noted that the two stop notches 151 are respectively provided on the two adjacent sides of the boss 15, and of course, they can also be provided on the two opposite sides of the boss 15. It can be understood that in some embodiments, according to the structure of the flange ball valve, the stop notches 151 can also be provided as three, four, etc., which is not limited here.

[0043] When the handle 50 drives the valve stem 14 to rotate to a predetermined position, the lock block 51 slides relative to the handle 50, and the first protrusion 511 is located in the stop notch 151, so that the handle 50 cannot rotate, thereby locking the valve stem 14. In some embodiments, a first lock hole 52 is provided on the handle 50, and a second lock hole 512 is provided on the lock block 51 to cooperate with the first lock hole 52. When the handle 50 rotates, the first lock hole 52 and the second lock hole 512 are sequentially penetrated by, for example, a lock head, a latch, etc., so as to limit the lock buckle from sliding relative to the handle 50, thereby preventing the first protrusion 511 from contacting the stop notch 151 and affecting the operation of the handle 50.

[0044] Of course, in some of the implementations, the locking mechanism includes a first protrusion provided on the handle 50 and a second protrusion provided on the boss 15, and the second protrusion is provided in at least two pieces, and threaded holes are provided on the first protrusion and the second protrusion, and bolts are sequentially penetrated and screwed through the threaded holes of the first protrusion and the threaded holes of the second protrusion to limit the rotation of the handle 50.

[0045] In the embodiment of the present invention, a mounting hole 152 is provided on the boss 15, and a positioning member (not shown in the figure) is detachably connected to the mounting hole 152. One side of the front end of the handle 50 has a second convex portion 53 that cooperates with the positioning member. It should be noted that the second convex portion 53 is horizontally arranged or bent. It should be noted that in the embodiment of the present invention, four mounting holes 152 are provided on the boss 15, and a positioning member is installed on at least one of the four mounting holes 152. When the handle 50 rotates, the second convex portion 53 abuts against the positioning member, thereby limiting the rotation angle of the handle 50. It should be noted that the positioning member is set as a bolt, a pin, etc.

[0046] In the embodiment of the present invention, a packing 16 is provided in the channel between the valve body 10 and the valve stem 14, and a gland assembly for compressing the packing 16 is sleeved on the valve stem 14. It not only positions the valve stem 14 to ensure that the valve stem 14 can normally drive the ball 20 to rotate, but also seals the valve body 10, has a certain strength, and prevents the internal fluid from flowing out. In a specific embodiment, the gland assembly includes a wear-resistant sheet 61 located above the packing 16, a grommet 62 located above the wear-resistant sheet 61, a butterfly spring 63 located above the grommet 62, a valve stem nut 64 located above the butterfly spring 63, and a locking gasket 65 located between the valve stem nut 64 and the handle 50, and has a compact structure and good stability.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A flange ball valve, characterized in that: include: A valve body (10), wherein the valve body (10) has a valve cavity (11) therein, the valve body (10) is provided with a passage connected to the valve cavity (11), and a ball (20) having a through hole is movably arranged in the valve cavity (11); A valve seat (12), wherein two valve seats (12) are provided, the two valve seats (12) are symmetrically arranged on both sides of the valve cavity (11), and the valve seat (12) is located between the ball (20) and the valve body (10); a valve cover (13), the valve cover (13) being plug-connected to one end of the valve body (10), and one end of the valve cover (13) abutting against the valve seat (12); a valve stem (14), the valve stem (14) being inserted into the channel and being linked to the ball (20); A flange (30), the flange (30) being sleeved on the other end of the valve body (10) and being rotatable relative to the valve body (10); a limiting mechanism (40), the limiting mechanism (40) being arranged between the valve body (10) and the flange (30), the limiting mechanism (40) being capable of limiting the forward and backward movement of the flange (30) relative to the valve body (10) during a rotation process; The limiting mechanism comprises a limiting slide groove (41) and a limiting member (42) slidably connected to the limiting slide groove (41); the limiting slide groove (41) is provided on one of the valve body (10) and the flange (30), and the limiting member (42) is provided on the other of the valve body (10) and the flange (30); The valve stem (14) is provided with a handle (50) which cooperates with the valve stem (14); A locking mechanism for limiting the rotation of the handle (50) is provided between the valve body (10) and the handle (50).

2. The flange ball valve according to claim 1, characterized in that: The limiting member (42) is a threaded rod.

3. The flange ball valve according to claim 1, characterized in that: The valve body (10) has a boss (15), and the boss (15) is provided with the channel; The locking mechanism comprises a locking block (51) and at least two stopping notches (151); the locking block (51) is slidably arranged on the handle (50); at least two stopping notches (151) are formed on the boss (15); and the locking block (51) has a first convex portion (511) that cooperates with the stopping notches (151).

4. The flange ball valve according to claim 3, characterized in that: The boss (15) is provided with a mounting hole (152), a positioning piece is detachably connected to the mounting hole (152), and one side of the front end of the handle (50) has a second convex portion (53) that cooperates with the positioning piece.

5. The flange ball valve according to claim 4, characterized in that: A packing (16) located in the channel is arranged between the valve body (10) and the valve stem (14), and a gland assembly for pressing the packing (16) is sleeved on the valve stem (14).

6. The flange ball valve according to claim 5, characterized in that: The gland assembly comprises a wear-resistant plate (61) located above the packing (16), a glam (62) located above the wear-resistant plate (61), a butterfly spring (63) located above the glam (62), a valve stem nut (64) located above the butterfly spring (63), and an anti-loosening gasket (65) located between the valve stem nut (64) and the handle (50).

7. The flange ball valve according to claim 1, characterized in that: A sealing ring (70) is provided between the valve cover (13) and the valve body (10).

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