Wear-resistant dome valve

Abstract

The application belongs to the technical field of dome valves, and discloses a wear-resistant dome valve, which comprises a dome valve body and a valve core rotatably installed in the dome valve body, the dome valve body is a hollow structure with openings at the top and bottom, a rotating mechanism for driving the valve core to rotate is arranged on the dome valve body, an installation groove extending into the dome valve body is formed in the top of the dome valve body, an inflatable sealing gasket is connected to the installation groove in a plug-in manner, a sealing cover is connected to the installation groove in a plug-in manner, the bottom of the sealing cover abuts against the top of the inflatable sealing gasket, a gas supply mechanism for supplying gas to the inflatable sealing gasket is arranged on the inflatable sealing gasket, a plurality of installation screw holes are formed in the top of the dome valve body, and a fixing assembly is arranged on the dome valve body. According to the application, the fixing assembly is arranged, so that the operation of disassembling or installing the inflatable sealing gasket in the dome valve body is omitted, and the replacement speed of the inflatable sealing gasket is improved.

Description

Technical Field

[0001] This utility model relates to the field of dome valve technology, and in particular to a wear-resistant dome valve. Background Technology

[0002] A dome valve is a device used to control the flow of fluids or gases. Inside the dome valve is an elastic, expandable sealing ring. When the sealing ring is inflated, it can form an effective seal, thereby preventing material leakage.

[0003] Chinese utility model patent CN220523333U discloses a dome valve controlled by dual solenoid valves, including a dome valve body, an actuating cylinder, an air inlet A, an air inlet B, a two-position five-way solenoid valve, a positioning coupling sleeve, a hemispherical valve core, an inflatable rubber sealing ring, an air guide pipe, a quick exhaust valve, an air guide switch mechanism, a two-position three-way solenoid valve, and a control module. The hemispherical valve core is movably disposed within the dome valve body. The left end of the positioning coupling sleeve extends into the dome valve body and connects to the hemispherical valve core. An inflatable rubber sealing ring is disposed on the top of the dome valve body, and the inflatable rubber sealing ring is evenly disposed around the top of the hemispherical valve core.

[0004] The pneumatic rubber sealing ring of the aforementioned dome valve is located inside the dome valve body. When replacing the pneumatic rubber sealing ring, the operator needs to disassemble or install it inside the dome valve body, which increases the difficulty of replacing the pneumatic rubber sealing ring and is not conducive to improving the replacement speed of the pneumatic rubber sealing ring. Utility Model Content

[0005] To solve the above problems, this utility model provides a wear-resistant dome valve.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a wear-resistant dome valve, comprising a dome valve body and a valve core rotatably installed within the dome valve body. The dome valve body is a hollow structure with openings at both the top and bottom. A rotating mechanism for driving the valve core to rotate is provided on the dome valve body. An installation groove extending into the dome valve body is provided at the top of the dome valve body. An inflatable sealing gasket is inserted into the installation groove. A sealing cover is inserted into the installation groove. The bottom of the sealing cover abuts against the top of the inflatable sealing gasket. An air supply mechanism for supplying air to the inflatable sealing gasket is provided on the inflatable sealing gasket. A plurality of mounting screw holes for bolt thread engagement on a material conveying pipeline are provided at the top of the dome valve body. A fixing component for fixing the sealing cover and the dome valve body is provided on the dome valve body.

[0007] By adopting the above technical solution, during the replacement of the inflatable sealing gasket, the fixing relationship between the dome valve body and the sealing cover is first released by the fixing component. Then, the sealing cover and the inflatable sealing gasket are removed from the mounting groove in sequence. Subsequently, the new inflatable sealing gasket and the sealing cover are inserted into the mounting groove in sequence. Finally, the sealing cover and the dome valve body are fixed to complete the replacement of the inflatable sealing gasket. There is no need to disassemble and replace the inflatable sealing gasket inside the dome valve body, which reduces the difficulty of replacing the inflatable sealing gasket and increases the replacement speed of the inflatable sealing gasket.

[0008] Furthermore, the top of the dome valve body is provided with multiple sliding grooves. The fixing assembly includes a slider slidably installed in the sliding groove, a connecting post set on the top of the slider, a positioning block fixed on the connecting post, and a turntable rotatably installed on the top of the dome valve body. The positioning block penetrates the side wall of the sliding groove near the sealing cover and slides in engagement. The top of the turntable is provided with a limiting through hole that slides in engagement with the connecting post. The distance between the limiting through hole and the axis of the dome valve body gradually increases from the sealing cover to the turntable. The side wall of the sealing cover is provided with a positioning slot that engages with the positioning block. The number of fixing assemblies, the number of sliding grooves, the number of limiting through holes, and the number of positioning slots are all equal, and their positions correspond one-to-one.

[0009] By adopting the above technical solution, rotating the turntable causes the connecting post, which is slidably connected to the limiting through hole, the slider connected to the connecting post, and the positioning block connected to the slider to all move away from the axis of the dome valve body until the positioning block separates from the positioning slot. At this point, the inflation sealing gasket and sealing cover can be disassembled. Similarly, rotating the turntable in the opposite direction causes the connecting post, slider, and positioning block to all move towards the positioning slot until the positioning block is inserted into the positioning slot, thus fixing the sealing cover in place and ensuring the stability of the sealing cover when the dome valve body is working normally.

[0010] Furthermore, the rotating mechanism includes a mounting plate fixed to the dome valve body, a motor fixed to the mounting plate, a drive gear fixedly sleeved on the output end of the motor, a rotating column that passes through and is rotatably connected to the side wall of the dome valve body, and a driven gear fixedly sleeved on the rotating column and meshing with the drive gear. The rotating column is fixed to the valve core, and the horizontal axis of the valve core coincides with the axis of the rotating column.

[0011] By adopting the above technical solution, after the motor works, it drives the drive gear to rotate, which causes the driven gear meshing with the drive gear, the rotating column connected to the driven gear, and the valve core connected to the rotating column to rotate, thereby ensuring the normal operation of the dome valve.

[0012] Furthermore, an air supply channel communicating with the inside of the air supply gasket is provided through the side wall of the inflatable sealing gasket. The air supply mechanism includes an external threaded pipe that is threaded through the side wall of the dome valve body, a connecting pipe fixed to one end of the external threaded pipe near the axis of the dome valve body, and an air supply pipe rotatably installed at one end of the external threaded pipe away from the axis of the dome valve body. The outer side wall of the connecting pipe abuts against the inner side wall of the air supply channel. The air supply pipe and the external threaded pipe are coaxially arranged, and the air supply pipe and the external threaded pipe are sealed by a rotating shaft seal.

[0013] By adopting the above technical solution, rotating the external threaded tube drives the connecting tube to rotate until the connecting tube separates from the air supply channel, and the sealing cover can be removed from the installation groove. Similarly, after the sealing cover is installed in the installation groove, rotating the external threaded tube drives the connecting tube to rotate in the opposite direction until the connecting tube is pressed against the air supply channel to ensure the normal sealing work of the inflatable sealing gasket.

[0014] Furthermore, a limiting post is fixed at the bottom of the sealing cover, the limiting post penetrates the inflatable sealing gasket and is inserted into it, and a limiting slot is provided at the bottom of the mounting groove to be inserted into the limiting post.

[0015] By adopting the above technical solution, the limiting post and limiting slot have a good limiting effect, which improves the stability of the inflatable sealing gasket and sealing cover when installed in the installation groove.

[0016] Furthermore, the connecting column is rotatably mounted on the top of the slider.

[0017] By adopting the above technical solution, the friction between the turntable and the connecting column is reduced when the turntable rotates.

[0018] Furthermore, the gas supply mechanism also includes an auxiliary block with a regular hexagonal structure that is fixedly sleeved on the external threaded pipe.

[0019] By adopting the above technical solution, the rotation of the externally threaded pipe is facilitated.

[0020] Furthermore, a limiting through hole is provided on the top of the turntable at the position corresponding to the mounting screw hole, allowing the bolts on the material conveying pipe to pass through.

[0021] By adopting the above technical solution, after the dome valve body and the conveying pipeline are connected, the stability of the turntable is improved by the limiting between the bolt and the limiting through hole.

[0022] In summary, the present invention has the following beneficial effects: In this application, by setting a fixing component, the operation of disassembling or installing the inflatable sealing gasket in the dome valve body, which is required in the prior art, is eliminated, thereby reducing the difficulty of replacing the inflatable sealing gasket and increasing the speed of replacing the inflatable sealing gasket. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is an exploded view of an embodiment of the present invention to highlight the connection structure between the sealing cap and the inflatable sealing gasket;

[0025] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present invention used to highlight the fixing component;

[0026] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the present invention used to highlight the gas supply component;

[0027] Figure 5 yes Figure 3 Enlarged view of point A in the middle;

[0028] Figure 6 yes Figure 4 Enlarged diagram of point B in the middle.

[0029] In the diagram: 1. Dome valve body; 2. Valve core; 3. Mounting groove; 4. Inflatable sealing gasket; 5. Sealing cover; 6. Air supply channel; 7. Rotating mechanism; 71. Mounting plate; 72. Motor; 73. Drive gear; 74. Rotating column; 75. Driven gear; 8. Air supply mechanism; 81. External threaded pipe; 82. Connecting pipe; 83. Air supply pipe; 84. Auxiliary block; 9. Mounting screw hole; 10. Fixing component; 101. Slider; 102. Connecting column; 103. Positioning insert; 104. Turntable; 11. Slide groove; 12. Limiting through hole; 13. Positioning slot; 14. Limiting post; 15. Limiting slot; 16. Limiting through hole. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] like Figure 1-6As shown in the figure, this application discloses a wear-resistant dome valve, including a dome valve body 1, a valve core 2, a fixing assembly 10, a rotating mechanism 7, and an air supply mechanism 8. The dome valve body 1 is a hollow structure with openings at both the top and bottom. The valve core 2 is rotatably installed inside the dome valve body 1. Both the surface of the dome valve body 1 and the valve core 2 are coated with a tungsten carbide protective coating to improve their wear resistance. The top of the dome valve body 1 has an installation groove 3 extending into the dome valve body 1, and an inflatable sealing gasket 4 is inserted into the installation groove 3. An air supply channel 6 communicating with the inside of the inflatable sealing gasket 4 is provided through the side wall of the inflatable sealing gasket 4. A sealing cover 5 is inserted into the installation groove 3, and the bottom of the sealing cover 5 abuts against the top of the inflatable sealing gasket 4. The top of the dome valve body 1 has multiple mounting screw holes 9 for bolt thread engagement on the material conveying pipeline, and multiple sliding grooves 11.

[0032] During the replacement of the inflatable sealing gasket 4, the fixing relationship between the dome valve body 1 and the sealing cover 5 is first released by the fixing component 10. Then, the sealing cover 5 and the inflatable sealing gasket 4 are taken out from the mounting groove 3 in sequence. Subsequently, the new inflatable sealing gasket 4 and the sealing cover 5 are inserted into the mounting groove 3 in sequence. Finally, the sealing cover 5 and the dome valve body 1 are fixed to complete the replacement operation of the inflatable sealing gasket 4. There is no need to disassemble and replace the inflatable sealing gasket 4 inside the dome valve body 1, which improves the replacement speed of the inflatable sealing gasket 4.

[0033] A fixing assembly 10 is disposed on the dome valve body 1, and is used to fix the sealing cover 5 and the dome valve body 1. The fixing assembly 10 includes a slider 101, a connecting post 102, a positioning block 103, and a turntable 104. The slider 101 is slidably installed in the slide groove 11. The connecting post 102 is disposed on the top of the slider 101. The positioning block 103 is fixed on the connecting post 102, and the positioning block 103 passes through the side wall of the slide groove 11 near the sealing cover 5 and slides in engagement. The side wall of the sealing cover 5 has a positioning slot 13 that engages with the positioning block 103. The turntable 104 is rotatably mounted on the top of the dome valve body 1. The top of the turntable 104 is provided with a limiting through hole 12 that slides with the connecting column 102. The distance between the limiting through hole 12 and the axis of the dome valve body 1 gradually increases from the sealing cover 5 to the turntable 104. The number of fixed components 10, the number of slide grooves 11, the number of limiting through holes 12 and the number of positioning slots 13 are all equal and their positions correspond one to one.

[0034] Rotating the turntable 104 causes the connecting post 102, which is slidably connected to the limiting through hole 12, the slider 101 connected to the connecting post 102, and the positioning block 103 connected to the slider 101 to all move in a direction away from the axis of the dome valve body 1 until the positioning block 103 separates from the positioning groove 13. At this point, the inflatable sealing gasket 4 and the sealing cover 5 can be disassembled. Similarly, rotating the turntable 104 in the opposite direction causes the connecting post 102, the slider 101, and the positioning block 103 to all move in the direction of the positioning groove 13 until the positioning block 103 is inserted into the positioning groove 13. This achieves the fixed positioning of the sealing cover 5, ensuring the stability of the sealing cover 5 when the dome valve body 1 is working normally.

[0035] A rotating mechanism 7 is mounted on the dome valve body 1 and drives the valve core 2 to rotate. The rotating mechanism 7 includes a mounting plate 71, a motor 72, a drive gear 73, a rotating column 74, and a driven gear 75. The mounting plate 71 is fixed to the dome valve body 1. The motor 72 is fixed to the mounting plate 71, and the drive gear 73 is fixedly sleeved on the output end of the motor 72. The rotating column 74 passes through the side wall of the dome valve body 1 and is rotatably connected to it. The rotating column 74 is fixed to the valve core 2. The horizontal axis of the valve core 2 coincides with the axis of the rotating column 74. The driven gear 75 is fixedly sleeved on the rotating column 74 and meshes with the drive gear 73. After the motor 72 operates, it drives the drive gear 73 to rotate, causing the driven gear 75 meshing with the drive gear 73, the rotating column 74 connected to the driven gear 75, and the valve core 2 connected to the rotating column 74 to all rotate, thereby ensuring the normal operation of the dome valve.

[0036] An air supply mechanism 8 is mounted on the inflatable sealing gasket 4 and is used to supply air to the inflatable sealing gasket 4. The air supply mechanism 8 includes an external threaded pipe 81, a connecting pipe 82, and an air supply pipe 83. The external threaded pipe 81 passes through the side wall of the dome valve body 1 and is threadedly connected. The connecting pipe 82 is fixed to the end of the external threaded pipe 81 near the axis of the dome valve body 1, and the outer side wall of the connecting pipe 82 abuts against the inner side wall of the air supply channel 6. The air supply pipe 83 is rotatably mounted on the end of the external threaded pipe 81 away from the axis of the dome valve body 1. The air supply pipe 83 and the external threaded pipe 81 are coaxially arranged, and the air supply pipe 83 and the external threaded pipe 81 are sealed by a rotating shaft seal.

[0037] Rotate the external threaded tube 81 to drive the connecting tube 82 to rotate until the connecting tube 82 is separated from the air supply channel 6, then the sealing cover 5 can be removed from the mounting groove 3. Similarly, after the sealing cover 5 is installed in the mounting groove 3, rotate the external threaded tube 81 to drive the connecting tube 82 to rotate in the opposite direction until the connecting tube 82 is pressed against the air supply channel 6 to ensure the normal sealing operation of the inflatable sealing gasket 4.

[0038] A limiting post 14 is fixed to the bottom of the sealing cap 5. The limiting post 14 passes through the inflatable sealing gasket 4 and is inserted into it. The bottom of the mounting groove 3 is provided with a limiting slot 15 that is inserted into the limiting post 14. The limiting post 14 and the limiting slot 15 provide good limiting function, which improves the stability of the inflatable sealing gasket 4 and the sealing cap 5 when they are installed in the mounting groove 3.

[0039] The connecting post 102 is rotatably mounted on the top of the slider 101. This reduces the friction between the turntable 104 and the connecting post 102 when the turntable 104 rotates.

[0040] The gas supply mechanism 8 also includes an auxiliary block 84, which is fixedly sleeved on the external threaded pipe 81 and has a regular hexagonal structure, to facilitate the rotation of the external threaded pipe 81.

[0041] A limiting through hole 16 is provided at the top of the turntable 104, corresponding to the mounting screw hole 9, for the bolts on the conveying pipe to pass through. After the dome valve body 1 and the conveying pipe are connected, the stability of the turntable 104 is improved by the limiting between the bolts and the limiting through hole 16.

[0042] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A wear-resistant dome valve, comprising a dome valve body (1) and a valve core (2) rotatably mounted within the dome valve body (1), wherein the dome valve body (1) is a hollow structure with openings at both the top and bottom, and a rotating mechanism (7) for driving the valve core (2) to rotate is provided on the dome valve body (1), characterized in that: The top of the dome valve body (1) is provided with an installation groove (3) extending into the dome valve body (1). An inflatable sealing gasket (4) is inserted into the installation groove (3). A sealing cover (5) is inserted into the installation groove (3). The bottom of the sealing cover (5) abuts against the top of the inflatable sealing gasket (4). An air supply mechanism (8) for supplying air to the inflatable sealing gasket (4) is provided on the inflatable sealing gasket (4). The top of the dome valve body (1) is provided with multiple mounting screw holes (9) for bolt thread engagement on the conveying pipe. A fixing component (10) for fixing the sealing cover (5) and the dome valve body (1) is provided on the dome valve body (1).

2. The wear-resistant dome valve according to claim 1, characterized in that: The top of the dome valve body (1) is provided with multiple sliding grooves (11). The fixing assembly (10) includes a slider (101) slidably installed in the sliding groove (11), a connecting post (102) set on the top of the slider (101), a positioning block (103) fixed on the connecting post (102), and a turntable (104) rotatably installed on the top of the dome valve body (1). The positioning block (103) penetrates the side wall of the sliding groove (11) near the sealing cover (5) and slides in fit. The turntable (104) The top of the valve has a through hole (12) that slides with the connecting column (102). The distance between the through hole (12) and the axis of the dome valve body (1) gradually increases from the sealing cover (5) to the turntable (104). The side wall of the sealing cover (5) has a positioning slot (13) that is inserted into the positioning block (103). The number of fixed components (10), the number of sliding grooves (11), the number of through holes (12) and the number of positioning slots (13) are all equal and their positions correspond one to one.

3. The wear-resistant dome valve according to claim 1, characterized in that: The rotating mechanism (7) includes a mounting plate (71) fixed on the dome valve body (1), a motor (72) fixed on the mounting plate (71), a drive gear (73) fixedly sleeved on the output end of the motor (72), a rotating column (74) that passes through and is rotatably connected to the side wall of the dome valve body (1), and a driven gear (75) fixedly sleeved on the rotating column (74) and meshing with the drive gear (73). The rotating column (74) is fixed to the valve core (2), and the horizontal axis of the valve core (2) coincides with the axis of the rotating column (74).

4. The wear-resistant dome valve according to claim 1, characterized in that: The side wall of the inflatable sealing gasket (4) is provided with an air supply channel (6) that communicates with the inside of the inflatable sealing gasket (4). The air supply mechanism (8) includes an external threaded pipe (81) that is provided through the side wall of the dome valve body (1) and threadedly connected, a connecting pipe (82) fixed to one end of the external threaded pipe (81) near the axis of the dome valve body (1), and an air supply pipe (83) that is rotatably installed at one end of the external threaded pipe (81) away from the axis of the dome valve body (1). The outer side wall of the connecting pipe (82) abuts against the inner side wall of the air supply channel (6). The air supply pipe (83) is coaxially arranged with the external threaded pipe (81). The air supply pipe (83) and the external threaded pipe (81) are sealed by a rotating shaft seal.

5. A wear-resistant dome valve according to claim 1, characterized in that: The bottom of the sealing cover (5) is fixed with a limiting post (14), which penetrates the inflatable sealing gasket (4) and is inserted into it. The bottom of the mounting groove (3) is provided with a limiting slot (15) that is inserted into the limiting post (14).

6. A wear-resistant dome valve according to claim 2, characterized in that: The connecting column (102) is rotatably mounted on the top of the slider (101).

7. A wear-resistant dome valve according to claim 4, characterized in that: The gas supply mechanism (8) also includes an auxiliary block (84) that is fixedly sleeved on the external threaded pipe (81) and has a regular hexagonal structure.

8. A wear-resistant dome valve according to claim 2, characterized in that: The top of the turntable (104) is provided with a limiting through hole (16) for the bolts on the conveying pipe to pass through at the position corresponding to the mounting screw hole (9).

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