Ball valve safe to use

Abstract

The utility model discloses a ball valve safe to use, which comprises a first valve body and a ball valve core, a positioning component is arranged at the upper end of the first valve body, and sealing components are arranged in a first connecting flange plate and a second connecting flange plate. The valve handle swinging to the right side anticlockwise or the left side anticlockwise by 90 degrees can be blocked and limited, excessive anticlockwise or clockwise swinging of the valve handle is avoided, a plurality of positioning through holes are formed at equal intervals, a positioning pin can conveniently position the valve handle swinging to different angles through an extension piece, and the positioning precision is improved. The valve handle is prevented from swinging when being accidentally touched, the limiting range is wide, the use safety is good, the sealing performance of the connecting position of the second connecting flange plate can be improved by installing a sealing ring and a first auxiliary sealing ring, and the sealing performance of the connecting position of the first connecting flange plate can be improved by installing a second auxiliary sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically to a ball valve that is safe to use. Background Technology

[0002] A ball valve is a valve in which the valve stem drives the valve to rotate around the axis of the ball valve. The valve stem and the ball are linked and cooperated. The handle drives the valve stem to rotate, which in turn drives the ball to rotate.

[0003] In the prior art, a safety ball valve with the publication number "CN218267549U" restricts the ball valve mechanism through a limit component, limiting the rotating plate to a specified position. At the same time, a safety component is used to fix the state of the limit component, preventing the operator from accidentally touching the rotating plate and causing the safety ball valve to open, thus avoiding safety hazards.

[0004] However, the above technical solutions and existing technologies have the following drawbacks:

[0005] Although the ball valve can be restricted by the limiting component, this component can only fix the rotating plate when it is not in use to prevent accidental contact. Once the rotating plate swings to the left or right and opens, the limiting component can no longer restrict the rotating plate. If the opened rotating plate is accidentally touched, the flow rate of the ball valve can easily change, which also poses a certain safety hazard. Secondly, the installation pipe of the ball valve does not have a corresponding sealing structure, which makes it easy for leakage to occur at the connection between the installation pipe and the external pipeline when the ball valve is connected to the external pipeline. Its practicality needs to be further improved. Utility Model Content

[0006] The purpose of this invention is to provide a safe ball valve to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A safe ball valve includes a valve handle, a valve stem, a first connecting flange, a second valve body, a second connecting flange, a first valve body, and a ball valve core. The ball valve core is inserted inside the first valve body. The upper end of the ball valve core is connected to the valve stem, and the upper end of the valve stem is fitted with a valve handle. The second valve body is installed on the left end of the first valve body. The first valve body and the second valve body are connected and fixedly connected by the first connecting flange. The right end of the first valve body and the left end of the second valve body are both fixedly connected to the second connecting flange. Sealing inner rings are installed on both sides of the ball valve core. A positioning component is provided at the upper end of the first valve body, and the positioning component is used to position the valve handle. Sealing components are provided inside the first and second connecting flanges, and the sealing components are used to improve the sealing performance at the connection between the first and second connecting flanges.

[0009] Preferably, the positioning component includes an extension piece, a support plate, a positioning pin, a positioning through hole, and an insertion through hole. The support plate is fixedly connected to the upper end of the first valve body. Multiple positioning through holes are opened on the front side of the upper end of the support plate. An extension piece is provided on the side of the valve stem. An insertion through hole is opened inside the extension piece. A positioning pin is inserted into the insertion through hole.

[0010] Preferably, a first stop is fixedly connected to the rear side of the upper end face of the support plate, and a second stop is fixedly connected to the left side of the upper end face of the support plate. The plurality of positioning through holes are opened at equal intervals, and the positioning through holes and the through holes are matched with positioning pins.

[0011] Preferably, the sealing assembly includes a first auxiliary sealing ring, a sealing ring, a first guide groove, a first annular mounting groove, and a second annular mounting groove. The second connecting flange has a first annular mounting groove on its outer wall. The first auxiliary sealing ring is embedded inside the first annular mounting groove, and the first auxiliary sealing ring is made of a water-swellable sealing strip. The second annular mounting groove has a second annular mounting groove on its inner side. The second annular mounting groove has a sealing ring embedded inside, and the sealing ring is made of graphite-filled PTFE fiber packing. Multiple first guide grooves are formed between the first annular mounting groove and the second annular mounting groove.

[0012] Preferably, the inner wall of the first connecting flange is provided with a third annular mounting groove, and a second auxiliary sealing ring is embedded inside the third annular mounting groove. The second auxiliary sealing ring is made of a water-swellable sealing strip, and a plurality of second guide grooves are provided between the third annular mounting groove and the sealing inner liner ring.

[0013] Preferably, a reinforcing plate is fixedly connected to the lower end face of the extension piece, and an anti-disengagement sleeve is fitted on the upper side of the outer surface of the valve stem.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting the first stop and the second stop, the valve handle can be blocked and limited when it swings counterclockwise to the right or counterclockwise to the left to 90 degrees, so as to prevent the valve handle from swinging excessively counterclockwise or clockwise. By opening multiple positioning through holes at equal intervals, the positioning pin can be used to position the valve handle swinging to different angles through the extension piece, so as to prevent the valve handle from swinging in this way when it is accidentally touched. The limitation range is wide and the safety of use is good.

[0016] 2. The sealing ring installed inside the second annular mounting groove can provide a primary seal at the connection of the second connecting flange, while the first auxiliary sealing ring installed in the first annular mounting groove can provide a secondary seal at the connection of the second connecting flange. When the sealing ring leaks, the leaked liquid will be guided into the first annular mounting groove by the first guide groove, causing the first auxiliary sealing ring to expand upon contact with water and fill the first annular mounting groove, thereby sealing and plugging the leaked liquid and preventing easy leakage at the connection of the second connecting flange during subsequent use.

[0017] 3. By installing a second auxiliary sealing ring in the third annular mounting groove, the sealing performance of the first connecting flange connection can be improved. The second guide groove can guide the liquid leaking from the first connecting flange connection to the third annular mounting groove, causing the second auxiliary sealing ring to expand upon contact with water and fill the third annular mounting groove, thereby sealing and plugging the leaking liquid and preventing easy leakage at the first connecting flange connection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a structural diagram of the positioning component and the sealing component in this utility model;

[0020] Figure 3 This is a schematic diagram of the explosion state of the sealing component in this utility model;

[0021] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0022] Figure 5 for Figure 3 A magnified view of B in the middle.

[0023] In the diagram: 1. Valve handle; 2. Valve stem; 21. Anti-disengagement sleeve; 3. First connecting flange; 4. Second valve body; 5. Second connecting flange; 6. First valve body; 71. First stop; 72. Second stop; 73. Extension plate; 731. Reinforcing plate; 74. Support plate; 75. Locating pin; 76. Locating through hole; 77. Through hole; 81. First auxiliary sealing ring; 82. Sealing ring; 83. First guide groove; 84. First annular mounting groove; 85. Second annular mounting groove; 86. Third annular mounting groove; 87. Second auxiliary sealing ring; 88. Second guide groove; 9. Ball valve core; 10. Sealing inner liner ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 This utility model provides a technical solution:

[0026] Example 1:

[0027] A safe ball valve includes a valve handle 1, a valve stem 2, a first connecting flange 3, a second valve body 4, a second connecting flange 5, a first valve body 6, and a ball valve core 9. The ball valve core 9 is inserted inside the first valve body 6. The upper end of the ball valve core 9 is connected to the valve stem 2, and the valve handle 1 is installed on the upper end of the valve stem 2. The second valve body 4 is installed on the left end of the first valve body 6. The first valve body 6 and the second valve body 4 are connected and fixedly connected by the first connecting flange 3. The right end of the first valve body 6 and the left end of the second valve body 4 are both fixedly connected to the second connecting flange 5. The valve handle 1, valve stem 2, first connecting flange 3, second valve body 4, second connecting flange 5, first valve body 6, and ball valve core 9 constitute the ball valve. Since the detailed internal structure and working principle of the ball valve are relatively mature technologies in the prior art, they will not be described in detail here. An anti-disengagement sleeve 21 is fitted on the upper side of the outer surface of the valve stem 2 to prevent the valve handle 1 from loosening and slipping during use.

[0028] Both sides of the ball valve core 9 are equipped with sealing inner rings 10. The sealing inner rings 10 are made of silicone rubber, which improves the sealing performance between the ball valve core 9 and the first valve body 6 and the second valve body 4. The upper end of the first valve body 6 is provided with a positioning component, which is used to position the valve handle 1 to prevent the valve stem 2 from swinging open or closed when accidentally touched, thereby ensuring the safety of the ball valve. Both the first connecting flange 3 and the second connecting flange 5 are provided with sealing components, which are used to improve the sealing performance at the connection between the first connecting flange 3 and the second connecting flange 5, and prevent leakage from easily occurring at the connection between the first connecting flange 3 and the second connecting flange 5.

[0029] The positioning assembly includes an extension plate 73, a support plate 74, a positioning pin 75, a positioning through hole 76, and a through hole 77. The support plate 74 is fixedly connected to the upper end of the first valve body 6. The support plate 74 is connected to the first valve body 6, the first stop 71, and the second stop 72 by welding. The support plate 74 can support the first stop 71, the second stop 72, and the valve handle 1 respectively. Multiple positioning through holes 76 are provided on the front side of the upper end of the support plate 74. The multiple positioning through holes 76 are equally spaced and match the positioning pin 75. The multiple equally spaced positioning through holes 76 facilitate the positioning pin 75 to lock the extension plate 73 when it is rotated to different angles, thereby positioning the valve handle 1 when it swings to different angles.

[0030] An extension piece 73 is provided on the side of the valve stem 2. The extension piece 73 is connected to the valve stem 2 by welding. The extension piece 73 can support and limit the positioning pin 75. The extension piece 73 has an insertion hole 77 inside, which matches the positioning pin 75. The insertion hole 77 facilitates the insertion of the positioning pin 75 inside the extension piece 73. The positioning pin 75 is inserted into the insertion hole 77, and the positioning pin 75 can position the valve handle 1 through the extension piece 73. A first stop 71 is fixedly connected to the rear side of the upper end face of the support plate 74. The first stop 71 can swing counterclockwise to the right to nine degrees. The valve handle 1 is blocked and limited by a 10-degree angle, so that the valve handle 1 drives the ball valve core 9 to swing counterclockwise by 90 degrees through the valve stem 2 to fully open. A second stop 72 is fixedly connected to the left side of the upper end face of the support plate 74. The second stop 72 can block and limit the extension plate 73 that swings clockwise to the left by 90 degrees, thereby blocking and limiting the valve handle 1, so that the valve handle 1 drives the ball valve core 9 to swing clockwise by 90 degrees through the valve stem 2 to fully close. A reinforcing plate 731 is fixedly connected to the lower end face of the extension plate 73. The reinforcing plate 731 can further improve the connection stability between the extension plate 73 and the valve handle 1.

[0031] Example 2:

[0032] Based on Embodiment 1, in this embodiment, by installing the sealing ring 82 and the first auxiliary sealing ring 81, the sealing performance at the connection of the second connecting flange 5 can be improved, and by installing the second auxiliary sealing ring 87, the sealing performance at the connection of the first connecting flange 3 can be improved.

[0033] The sealing assembly includes a first auxiliary sealing ring 81, a sealing ring 82, a first guide groove 83, a first annular mounting groove 84, and a second annular mounting groove 85. The outer wall of the second connecting flange 5 has a first annular mounting groove 84. The depth of the first annular mounting groove 84 is half the thickness of the first auxiliary sealing ring 81. The first annular mounting groove 84 matches the first auxiliary sealing ring 81. The first annular mounting groove 84 facilitates the embedding of the first auxiliary sealing ring 81 inside the second connecting flange 5. The first auxiliary sealing ring 81 is embedded inside the first annular mounting groove 84. The first auxiliary sealing ring 81 is made of a water-swellable sealing strip. The first auxiliary sealing ring 81, made of a water-swellable sealing strip, has the ability to expand on its own when exposed to water, and can provide a secondary seal at the connection of the second connecting flange 5.

[0034] A second annular mounting groove 85 is provided inside the first annular mounting groove 84. The second annular mounting groove 85 matches the sealing ring 82. The depth of the second annular mounting groove 85 is half the thickness of the sealing ring 82. The second annular mounting groove 85 facilitates the installation of the sealing ring 82 into the second connecting flange 5. The sealing ring 82 is embedded inside the second annular mounting groove 85. The sealing ring 82 is made of graphite-filled PTFE fiber packing. The sealing ring 82 made of graphite-filled PTFE fiber packing has good corrosion resistance and sealing performance, and can provide a primary seal at the connection of the second connecting flange 5. Multiple first guide grooves 83 are provided between the first annular mounting groove 84 and the second annular mounting groove 85. The multiple first guide grooves 83 can guide the liquid that leaks through the sealing ring 82 into the first annular mounting groove 84, so that the first auxiliary sealing ring 81 in the first annular mounting groove 84 expands when it comes into contact with water and stops the leakage.

[0035] A third annular mounting groove 86 is provided on the inner wall of the first connecting flange 3. The third annular mounting groove 86 matches the second auxiliary sealing ring 87. The depth of the third annular mounting groove 86 is half the thickness of the second auxiliary sealing ring 87. The third annular mounting groove 86 facilitates the embedding of the second auxiliary sealing ring 87 inside the first connecting flange 3. The second auxiliary sealing ring 87 is embedded inside the third annular mounting groove 86. The second auxiliary sealing ring 87 is made of water-swellable sealing strip. The second auxiliary sealing ring 87, made of water-swellable sealing strip, has the ability to expand when exposed to water, and can effectively seal the connection of the first connecting flange 3. Multiple second guide grooves 88 are provided between the third annular mounting groove 86 and the sealing inner liner ring 10. The multiple second guide grooves 88 can guide the liquid that leaks through the sealing inner liner ring 10 to the third annular mounting groove 86, so that the second auxiliary sealing ring 87 in the third annular mounting groove 86 expands when exposed to water and seals.

[0036] Working principle: During the use of this ball valve, the first stop 71 can block and limit the valve handle 1 when it swings counterclockwise to the right to 90 degrees, preventing the valve handle 1 from swinging excessively counterclockwise. The second stop 72 can block and limit the valve handle 1 when it swings clockwise to the left to 90 degrees through the extension piece 73, preventing the valve handle 1 from swinging excessively clockwise. During the use of the valve handle 1, after the valve handle 1 swings to the desired position, the user only needs to insert the positioning pin 75 from top to bottom into the through hole 77 and the corresponding positioning through hole 76, so that the positioning pin 75 can position the valve handle 1 through the extension piece 73, preventing the valve handle 1 from swinging again when accidentally touched, thus ensuring the safety of the use of this ball valve. When the positioning pin 75 is lifted and removed, the valve handle 1 can be swung again.

[0037] By opening the third annular mounting groove 86, the second auxiliary sealing ring 87 can be easily embedded inside the first connecting flange 3. The installed second auxiliary sealing ring 87 can improve the sealing performance of the first connecting flange 3. In this process, when the liquid in the first valve body 6 or the second valve body 4 leaks outward through the sealing inner ring 10, the multiple second guide grooves 88 can guide the leaked liquid to the third annular mounting groove 86, so that the second auxiliary sealing ring 87 in the third annular mounting groove 86 expands when it comes into contact with water and fills the third annular mounting groove 86, thereby sealing and plugging the leaked liquid and preventing leakage from easily occurring at the connection of the first connecting flange 3.

[0038] By opening a second annular mounting groove 85, the sealing ring 82 is easily installed in the second connecting flange 5. By opening a first annular mounting groove 84, the first auxiliary sealing ring 81 is easily installed in the second connecting flange 5. The installed sealing ring 82 can improve the sealing performance at the connection of the second connecting flange 5. The installed sealing ring 82 can further improve the sealing performance at the connection of the second connecting flange 5. In this process, when the sealing ring 82 leaks, the leaked liquid will be guided by the first guide groove 83 to the first annular mounting groove 84. At this time, the first auxiliary sealing ring 81 in the first annular mounting groove 84 will expand when it comes into contact with water and fill the first annular mounting groove 84, thereby sealing and plugging the leaked liquid, thus preventing the connection of the second connecting flange 5 from easily leaking during subsequent use.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safe ball valve using, comprising a valve handle (1), a valve stem (2), a first connecting flange plate (3), a second valve body (4), a second connecting flange plate (5), a first valve body (6) and a ball valve spool (9), characterized in that: The first valve body (6) is internally plugged with a ball valve spool (9), the upper end of the ball valve spool (9) is connected with a valve stem (2), the upper end of the valve stem (2) is installed with a valve handle (1), the left end of the first valve body (6) is installed with a second valve body (4), the first valve body (6) and the second valve body (4) are connected and fixed through a first connecting flange plate (3), the right end of the first valve body (6) and the left end of the second valve body (4) are both fixedly connected with a second connecting flange plate (5), the left and right sides of the ball valve spool (9) are both installed with a sealing lining ring (10). The upper end of the first valve body (6) is provided with a positioning assembly, and the positioning assembly is used for positioning the valve handle (1), the interiors of the first connecting flange plate (3) and the second connecting flange plate (5) are both provided with a sealing assembly, and the sealing assembly is used for improving the sealing performance of the connection between the first connecting flange plate (3) and the second connecting flange plate (5).

2. A safety ball valve according to claim 1, characterized in that: The positioning assembly comprises an extension piece (73), a support disc (74), a positioning pin (75), a positioning through hole (76) and a penetrating through hole (77), the upper end of the first valve body (6) is fixedly connected with the support disc (74), a plurality of positioning through holes (76) are formed in the front side of the upper end face of the support disc (74), the side edge of the valve stem (2) is provided with the extension piece (73), the interior of the extension piece (73) is provided with the penetrating through hole (77), and the penetrating through hole (77) is internally inserted with the positioning pin (75).

3. A safety ball valve according to claim 2, characterized in that: The rear side of the upper end face of the support disc (74) is fixedly connected with a first stop head (71), the left side of the upper end face of the support disc (74) is fixedly connected with a second stop head (72), the plurality of positioning through holes (76) are equally spaced, and the positioning through hole (76) and the penetrating through hole (77) are both matched with the positioning pin (75).

4. A safety ball valve according to claim 1, characterized in that: The sealing assembly comprises a first auxiliary sealing ring (81), a sealing ring (82), a first guide groove (83), a first annular mounting groove (84) and a second annular mounting groove (85), the outer wall of the second connecting flange plate (5) is provided with the first annular mounting groove (84), the first annular mounting groove (84) is internally embedded with the first auxiliary sealing ring (81), the material of the first auxiliary sealing ring (81) is a water-swelling waterstop, the inner side of the first annular mounting groove (84) is provided with the second annular mounting groove (85), the second annular mounting groove (85) is internally embedded with the sealing ring (82), and the material of the sealing ring (82) is a graphite-filled PTFE fiber packing, and a plurality of first guide grooves (83) are formed between the first annular mounting groove (84) and the second annular mounting groove (85).

5. A safety ball valve according to claim 1, characterized in that: The inner wall of the first connecting flange plate (3) is provided with a third annular mounting groove (86), the third annular mounting groove (86) is internally embedded with a second auxiliary sealing ring (87), and the material of the second auxiliary sealing ring (87) is a water-swelling waterstop, and a plurality of second guide grooves (88) are formed between the third annular mounting groove (86) and the sealing lining ring (10).

6. A safety ball valve according to claim 2, characterized in that: The lower end surface of the extension piece (73) is fixedly connected with a reinforcing piece (731), and the outer surface of the valve rod (2) is sleeved with an anti-dropping sleeve (21).

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