Duplex three-way ball valve convenient to maintain

Abstract

The utility model discloses a duplex three-way ball valve convenient to maintain, which relates to the field of duplex three-way ball valves, and comprises a duplex three-way ball valve main body and a connecting flange, and the duplex three-way ball valve main body and the connecting flange are integrally formed. According to the double-linkage three-way ball valve, the sealing assembly is arranged, when the double-linkage three-way ball valve body and other pipeline flanges are installed, the pipeline flanges push the pressing rods to move, the pressing rods push the pressing rings to move, and when the pressing rings move in the direction of the inflatable air bag rings, the pressing rings can extrude the inflatable air bag rings; the inflatable air bag ring is compressed, air in the inflatable air bag ring can enter the sealing air bag ring through the inflation pipe, the sealing air bag ring is expanded and moves into the sealing groove, and then the sealing performance after the pipeline and the duplex three-way ball valve body are installed is improved; and through the inflatable air bag, a user does not need to worry that the sealing performance is influenced by the reduction of the elastic performance after long-time use of an elastic structure such as a sealing ring, so that fluid leakage is avoided, and the service life of the sealing assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of double three-way ball valves, in particular to a double three-way ball valve which is easy to maintain. Background Art

[0002] The double three-way ball valve is two three-way ball valves connected by a connecting rod. The valve outlets are in the same direction, and the sealing surfaces of the upper and lower corresponding flanges are on the same horizontal plane. When one side is opened, the other side will be closed at the same time, which ensures that the upper and lower three-way ball valves open and close synchronously. It is an ideal supporting product for equipment such as filters.

[0003] According to a Chinese patent with publication number CN215763435U, a precision-sealed double three-way ball valve is disclosed. The sealing strength between the connecting flange and the external pipe body is effectively improved through a sealing component, and a sealing gasket is installed in a first annular groove to improve the sealing level of the connecting flange. A sealing gasket is then added to the second annular groove to further enhance the sealing level.

[0004] In response to the above-mentioned disclosed patent content, a sealing gasket is added to improve the sealing between the pipeline and the double three-way ball valve, but the elastic performance of the sealing gasket will decrease after long-term use, resulting in the sealing gasket being difficult to fully fit with the inner wall of the pipeline and the double three-way ball valve, thereby affecting the sealing between the double three-way ball valve and the pipeline, resulting in a gap between the double three-way ball valve and the pipeline, and the fluid may flow out through the gap, thereby reducing the sealing performance of the double three-way ball valve after installation. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a double three-way ball valve that is easy to maintain, so as to solve the technical problem that the sealing performance of the sealing gasket will be reduced after long-term use, thereby affecting the sealing effect of the double three-way ball valve.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a double three-way ball valve that is easy to maintain, comprising a double three-way ball valve body and a connecting flange, the double three-way ball valve body and the connecting flange are integrally formed, a pipe flange is provided on one side of the connecting flange, a sealing component and a disassembly component are respectively provided inside the connecting flange, the sealing component comprises an active cavity opened inside the connecting flange and an annular groove opened on the connecting flange, a sealing airbag ring is provided inside the annular groove, an inflatable airbag ring is provided on one side of the active cavity, and a pressure ring is provided on one side of the inflatable airbag ring, a pressure rod that penetrates to the outside of the connecting flange is installed on one side of the pressure ring, and a plurality of inflatable tubes are connected between the inflatable airbag ring and the sealing airbag ring.

[0007] By adopting the above technical solution, when the pressure ring moves toward the inflatable airbag ring, the pressure ring can squeeze the inflatable airbag ring, so that the inflatable airbag ring is compressed and the air inside the inflatable airbag ring enters into the sealing airbag ring.

[0008] Furthermore, the disassembly and assembly assembly includes a rotating sleeve sleeved on the outer wall of the connecting flange, a plurality of slots opened on one side of the connecting flange, a plurality of grooves opened inside the connecting flange and a plurality of plug-in blocks installed on one side of the pipe flange, the plug-in block is provided with a limiting groove, a reset spring is fixed inside the groove, and one end of the reset spring is connected to a limiting block extending to the inside of the limiting groove, the limiting block is connected to a movable rod extending to the outside of the connecting flange, and a limiting ring is provided on one side of the rotating sleeve.

[0009] By adopting the above technical solution, when the double three-way ball valve body needs to be disassembled for maintenance, the user can rotate the rotating sleeve to move the rotating sleeve and drive the limit ring to move.

[0010] Furthermore, the inner wall of the rotating sleeve and the outer wall of the connecting flange are both provided with threads, and the rotating sleeve is threadedly connected to the connecting flange.

[0011] By adopting the above technical solution, the setting of the thread facilitates the rotation of the rotating sleeve, and when the rotating sleeve is no longer rotated, the rotating sleeve can also stay firmly on the outer wall of the connecting flange.

[0012] Furthermore, the inserting block is adapted to the slot, and the limiting block is adapted to the limiting groove.

[0013] By adopting the above technical solution, when the limiting block is inserted into the limiting groove, the insertion block can be limited to prevent the insertion block from moving out of the slot.

[0014] Furthermore, the top end of the movable rod contacts the inner wall of the limiting ring, and the limiting block is slidably connected to the groove.

[0015] By adopting the above technical solution, the limiting ring can limit the movable rod to prevent the movable rod from moving upward at will, thereby ensuring that the limiting block can be always inserted into the limiting groove.

[0016] Furthermore, a slide groove is provided inside the movable cavity, and a spring is fixed on one side of the slide groove, and one end of the spring is connected to a sliding block.

[0017] By adopting the above technical solution, when the slider slides inside the slide groove, it squeezes the spring, causing the spring to be compressed, making it easier to push the pressure ring to reset and move.

[0018] Furthermore, the slider is connected to the inner wall of the pressure ring, and the pressure ring is slidably connected to the sliding groove via the slider.

[0019] By adopting the above technical solution, when the pressure ring moves, it will drive the slider to slide inside the slide groove, so as to improve the stability of the pressure ring when moving.

[0020] Furthermore, a sealing groove is provided on one side of the pipeline flange, and one side of the sealing airbag ring is located inside the sealing groove.

[0021] By adopting the above technical solution, when the sealing airbag ring expands, the expanded part of the sealing airbag ring will move into the sealing groove, thereby achieving sealing between the pipeline flange and the connecting flange.

[0022] Furthermore, one end of the pressure rod is in contact with the pipeline flange.

[0023] By adopting the above technical solution, when the pipeline flange and the connecting flange are installed, the pipeline flange can push the pressure rod to move into the movable cavity.

[0024] Furthermore, the thickness of the inflatable airbag ring is greater than the thickness of the sealing airbag ring, and the plurality of inflatable tubes are distributed in a ring array between the inflatable airbag ring and the sealing airbag ring.

[0025] By adopting the above technical solution, sufficient air inside the inflatable airbag ring can enter into the sealed airbag ring through the inflation tube, thereby expanding the sealed airbag ring.

[0026] In summary, the utility model mainly has the following beneficial effects:

[0027] 1. The utility model is provided with a sealing assembly. When the double three-way ball valve body is installed with other pipeline flanges, the pipeline flange will push the pressure rod to move, and the pressure rod will push the pressure ring to move. When the pressure ring moves toward the inflatable airbag ring, the pressure ring can squeeze the inflatable airbag ring, so that the inflatable airbag ring is compressed and the air inside it enters the sealing airbag ring through the inflatable tube, so that the sealing airbag ring expands and moves into the sealing groove, thereby improving the sealing performance of the pipeline and the double three-way ball valve body after installation. In addition, through the inflatable airbag, there is no need to worry about the elastic performance of elastic structures such as sealing rings being reduced after long-term use, thereby affecting the sealing performance, thereby avoiding fluid leakage and improving the service life of the sealing assembly;

[0028] 2. The utility model is provided with a disassembly and assembly component. When the pipe flange needs to be installed, it is only necessary to insert the plug block on the pipe flange into the slot. After insertion, the movable rod is pressed to make the movable rod drive the limit block to move. At this time, the limit block moves into the limit groove and can limit and fix the plug block. Then the rotating sleeve is rotated to make the rotating sleeve drive the limit ring to move, and the limit ring can limit the movable rod, so that the limit block is firmly inserted into the limit groove to achieve the purpose of limiting the plug block and avoid the limit block from moving randomly. In this way, the double three-way ball valve can be quickly disassembled and assembled, which is convenient for maintenance of the double three-way ball valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0030] Figure 2 It is a schematic diagram of the partial structure of the top section of the connecting flange of the utility model;

[0031] Figure 3 It is a schematic diagram of the three-dimensional partial structure of the pipeline flange of the utility model;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting flange of the utility model;

[0033] Figure 5 For the utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the limit block of the utility model.

[0035] In the figure: 1. Double three-way ball valve body; 2. Connecting flange; 3. Sealing assembly; 301. Active cavity; 302. Pressure rod; 303. Inflatable airbag ring; 304. Pressure ring; 305. Inflating tube; 306. Annular groove; 307. Sealing airbag ring; 308. Spring; 309. Slider; 310. Slide groove; 4. Disassembly and assembly assembly; 401. Rotating sleeve; 402. Limiting ring; 403. Active rod; 404. Groove; 405. Reset spring; 406. Insert block; 407. Slot; 408. Limiting groove; 409. Limiting block; 5. Pipe flange; 6. Sealing groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0037] The following describes an embodiment of the utility model based on its overall structure.

[0038] Embodiment 1:

[0039] A double three-way ball valve that is easy to maintain, such as Figure 1-Figure 6 As shown, it includes a double three-way ball valve body 1 and a connecting flange 2. The double three-way ball valve body 1 and the connecting flange 2 are integrally formed. A pipeline flange 5 is provided on one side of the connecting flange 2. A sealing component 3 and a disassembly component 4 are provided inside the connecting flange 2. The sealing component 3 includes an active cavity 301 opened inside the connecting flange 2 and an annular groove 306 opened on the connecting flange 2. A sealing airbag ring 307 is provided inside the annular groove 306. An inflatable gas bag ring 307 is provided on one side of the active cavity 301. An airbag ring 303 is provided with a pressure ring 304 on one side of the inflatable airbag ring 303, and a pressure rod 302 is installed on one side of the pressure ring 304 which penetrates to the outside of the connecting flange 2, and multiple inflation tubes 305 are connected between the inflatable airbag ring 303 and the sealing airbag ring 307. When the pressure ring 304 moves toward the inflatable airbag ring 303, the pressure ring 304 can squeeze the inflatable airbag ring 303, so that the inflatable airbag ring 303 is compressed and the air inside it will enter the inside of the sealing airbag ring 307.

[0040] Specifically, the thickness of the inflatable airbag ring 303 is greater than the thickness of the sealing airbag ring 307, and multiple inflatable tubes 305 are distributed in a ring array between the inflatable airbag ring 303 and the sealing airbag ring 307, so that enough air inside the inflatable airbag ring 303 can enter the sealing airbag ring 307 through the inflatable tubes 305, thereby expanding the sealing airbag ring 307. A sealing groove 6 is also provided on one side of the pipeline flange 5, and one side of the sealing airbag ring 307 is located inside the sealing groove 6. When the sealing airbag ring 307 is expanded, the sealing airbag The expanded part of the ring 307 will move into the sealing groove 6, thereby realizing the sealing between the pipe flange 5 and the connecting flange 2. One end of the pressure rod 302 contacts the pipe flange 5, so that when the pipe flange 5 and the connecting flange 2 are installed, the pipe flange 5 can push the pressure rod 302 to move into the movable cavity 301. One end of the pressure rod 302 contacts the pipe flange 5, so that when the pipe flange 5 is installed, it can push the pressure rod 302 to move, so that the pressure rod 302 drives the pressure ring 304 to move, and the pressure ring 304 can squeeze the inflatable airbag ring 303.

[0041] Specifically, the disassembly and assembly component 4 includes a rotating sleeve 401 that is sleeved on the outer wall of the connecting flange 2, a plurality of slots 407 opened on one side of the connecting flange 2, a plurality of grooves 404 opened inside the connecting flange 2, and a plurality of plug-in blocks 406 installed on one side of the pipe flange 5. The plug-in blocks 406 are adapted to the slots 407, and the limit blocks 409 are adapted to the limit grooves 408. When the limit blocks 409 are inserted into the limit grooves 408, the plug-in blocks 406 can be limited to prevent the plug-in blocks 406 from moving out of the slots 407. The limit grooves 408 are opened on the plug-in blocks 406, and a reset spring 405 is fixed inside the grooves 404, and one end of the reset spring 405 is connected to the limit block 409 extending to the inside of the limit grooves 408. The top end of the movable rod 403 contacts the inner wall of the limit ring 402.

[0042] Specifically, the limit block 409 is slidably connected to the groove 404, and the limit ring 402 can limit the movable rod 403 to prevent the movable rod 403 from moving up at will, thereby ensuring that the limit block 409 can be always inserted into the limit groove 408. The limit block 409 is connected to the movable rod 403 that penetrates to the outside of the connecting flange 2, and a limit ring 402 is provided on one side of the rotating sleeve 401. When the double three-way ball valve body 1 needs to be disassembled for maintenance, the user can rotate the rotating sleeve 401 to move the rotating sleeve 401 and drive the limit ring 402 to move. The inner wall of the rotating sleeve 401 and the outer wall of the connecting flange 2 are both provided with threads, and the rotating sleeve 401 is threadedly connected to the connecting flange 2. The setting of the threads facilitates the rotation of the rotating sleeve 401. At the same time, when the rotating sleeve 401 is no longer rotated, the rotating sleeve 401 can also stay firmly on the outer wall of the connecting flange 2, and the setting of the disassembly and assembly component 4 facilitates the disassembly of the double three-way ball valve body 1 for maintenance.

[0043] Embodiment 2:

[0044] On the basis of the above-mentioned first embodiment, in order to facilitate the subsequent rapid resetting of the pressure ring 304, the following structure is provided.

[0045] See also Figure 2 and Figure 5 A slide groove 310 is also provided inside the movable cavity 301, and a spring 308 is fixed on one side of the slide groove 310, and a slider 309 is connected to one end of the spring 308. When the slider 309 slides inside the slide groove 310, it squeezes the spring 308, so that the spring 308 is compressed, which is convenient for pushing the pressure ring 304 to reset and move. The slider 309 is connected to the inner wall of the pressure ring 304, and the pressure ring 304 is slidably connected to the slide groove 310 through the slider 309. When the pressure ring 304 moves, it drives the slider 309 to slide inside the slide groove 310, so as to improve the stability of the pressure ring 304 when moving.

[0046] The working principle of the utility model is as follows: first, when the double three-way ball valve body needs to be installed with other pipelines through the pipeline flange 5, the plug block 406 on the pipeline flange 5 is inserted into the slot 407, and then the movable rod 403 is pressed after insertion, so that the movable rod 403 drives the limit block 409 to move, and at this time the limit block 409 moves into the limit groove 408 to limit and fix the plug block 406, and then the rotating sleeve 401 is rotated, so that the rotating sleeve 401 drives the limit ring 402 to move, and the limit ring 402 can limit the movable rod 403, so that the limit block 409 is firmly inserted into the limit groove 408, thereby achieving the purpose of limiting the plug block 406;

[0047] At the same time, when the pipe flange 5 is installed, it will push the pressure rod 302 to move, and the pressure rod 302 will push the pressure ring 304 to move. When the pressure ring 304 moves toward the inflatable airbag ring 303, the pressure ring 304 can squeeze the inflatable airbag ring 303, so that the inflatable airbag ring 303 is compressed and the air inside it will enter the sealing airbag ring 307 through the inflation tube 305, so that the sealing airbag ring 307 expands and moves into the sealing groove 6, thereby improving the sealing performance of the pipeline and the double three-way ball valve body after installation.

[0048] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A double three-way ball valve that is easy to maintain, comprising a double three-way ball valve body (1) and a connecting flange (2), characterized in that: The double three-way ball valve body (1) and the connecting flange (2) are integrally formed, a pipe flange (5) is provided on one side of the connecting flange (2), a sealing component (3) and a disassembly component (4) are respectively provided inside the connecting flange (2), the sealing component (3) comprises an active cavity (301) provided inside the connecting flange (2) and an annular groove (306) provided on the connecting flange (2), a sealing airbag ring (307) is provided inside the annular groove (306), an inflatable airbag ring (303) is provided on one side of the active cavity (301), and a pressure ring (304) is provided on one side of the inflatable airbag ring (303), a pressure rod (302) penetrating to the outside of the connecting flange (2) is installed on one side of the pressure ring (304), and a plurality of inflatable tubes (305) are connected between the inflatable airbag ring (303) and the sealing airbag ring (307).

2. The double three-way ball valve easy to maintain according to claim 1, characterized in that: The disassembly and assembly component (4) comprises a rotating sleeve (401) sleeved on the outer wall of the connecting flange (2), a plurality of slots (407) provided on one side of the connecting flange (2), a plurality of grooves (404) provided inside the connecting flange (2), and a plurality of plug-in blocks (406) installed on one side of the pipe flange (5), wherein a limiting groove (408) is provided on the plug-in block (406), a return spring (405) is fixed inside the groove (404), and one end of the return spring (405) is connected to a limit block (409) extending into the limit groove (408), and a movable rod (403) penetrating to the outside of the connecting flange (2) is connected to the limit block (409), and a limit ring (402) is provided on one side of the rotating sleeve (401).

3. The double three-way ball valve easy to maintain according to claim 2, characterized in that: The inner wall of the rotating sleeve (401) and the outer wall of the connecting flange (2) are both provided with threads, and the rotating sleeve (401) is connected to the connecting flange (2) by threads.

4. The double three-way ball valve easy to maintain according to claim 2, characterized in that: The insert block (406) is matched with the slot (407), and the limit block (409) is matched with the limit groove (408).

5. The double three-way ball valve easy to maintain according to claim 2, characterized in that: The top end of the movable rod (403) contacts the inner wall of the limiting ring (402), and the limiting block (409) is slidably connected to the groove (404).

6. The double three-way ball valve easy to maintain according to claim 1, characterized in that: A sliding groove (310) is also provided inside the movable cavity (301), and a spring (308) is fixed on one side of the sliding groove (310), and one end of the spring (308) is connected to a sliding block (309).

7. The double three-way ball valve easy to maintain according to claim 6, characterized in that: The slider (309) is connected to the inner wall of the pressure ring (304), and the pressure ring (304) is slidably connected to the slide groove (310) via the slider (309).

8. The double three-way ball valve easy to maintain according to claim 1, characterized in that: A sealing groove (6) is also provided on one side of the pipeline flange (5), and one side of the sealing airbag ring (307) is located inside the sealing groove (6).

9. The double three-way ball valve easy to maintain according to claim 1, characterized in that: One end of the pressure rod (302) is in contact with the pipeline flange (5).

10. The double three-way ball valve easy to maintain according to claim 1, characterized in that: The thickness of the inflatable airbag ring (303) is greater than the thickness of the sealing airbag ring (307), and the plurality of inflatable tubes (305) are distributed in an annular array between the inflatable airbag ring (303) and the sealing airbag ring (307).

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