Stopcock valve for easy maintenance

Abstract

The utility model discloses a faucet valve convenient to disassemble and maintain relates to valve technical field. The faucet valve convenient to disassemble and maintain, the faucet valve convenient to disassemble and maintain, including valve body, the valve body is big hollow -like of center two ends small, and the top and bottom of valve body correspond and are seted up and have the through -hole, and the both ends fixed connection of valve body have the connecting platform, the one end fixed connection of connecting platform is away from the valve body and has the import flange, and the other connecting platform is away from the valve body and has the export flange, and the inboard of import flange and the inboard of export flange all fixed connection has the sealing washer, and the integrated design of plug core and valve rod makes when replacing the sealing element or valve core not need to split the core component, compares the multilayer flange bolt connection of traditional faucet valve, and the disassembly step reduces above, and the maintenance time is shortened significantly, and the artificial cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a plug valve that is easy to disassemble and maintain. Background Technology

[0002] In fields such as chemical media transportation, municipal water supply and drainage, and oil and gas extraction and transportation, plug valves are key equipment for controlling the flow and cut-off of fluids. They require frequent maintenance operations such as valve core replacement and transmission component overhaul. However, due to structural design defects, traditional plug valves are extremely difficult to disassemble and maintain. This problem not only prolongs maintenance time and increases operation and maintenance costs, but also leads to a series of pain points such as sealing failure, difficulty in cleaning impurities, and unstable operation, which seriously restrict the service life of the equipment and its adaptability to various scenarios.

[0003] Traditional plug valves often use integrated welding or multi-layer flange bolt connections for the drive components and valve body. During maintenance, multiple bolts need to be disassembled one by one, and the bolts are prone to rust and jamming, making it difficult for a single person to complete. Some small plug valves have simple end caps without positioning structures, and they are prone to misalignment after disassembly and reassembly, requiring repeated adjustments. In scenarios where uninterrupted operation is required, long-term shutdown for maintenance can lead to production line interruptions and fluctuations in water supply pressure.

[0004] Meanwhile, the cumbersome maintenance process can cause staff to delay maintenance cycles, exacerbating the problem of weak sealing structure in traditional plug valves, which only have single-layer seals on the inlet and outlet flanges and simple seals on the valve core. This can lead to media leakage and safety hazards. Traditional plug valves do not have a dedicated dustproof structure, and dust can easily cause the drive components to stick and wear, resulting in the handwheel spinning freely and the valve core shifting, affecting control accuracy. In addition, the drain port of some plug valves is not connected to the valve core, and impurities accumulate, requiring disassembly of the valve body for cleaning, forming a vicious cycle of impurity accumulation, valve core sticking, and more difficult maintenance.

[0005] Current industrial production demands higher efficiency, maintenance, and reliability. Traditional plug valves are no longer adequate for the needs of various fields. There is an urgent need to optimize the connection structure, simplify the disassembly and assembly process, and take into account sealing, dust prevention, and impurity removal functions to fundamentally solve the problem of difficult disassembly and maintenance. Utility Model Content

[0006] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a plug valve that is easy to disassemble and maintain, thereby solving the above-mentioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a plug valve that is easy to disassemble and maintain, including a valve body, the valve body being hollow with a large center and small ends, with through holes corresponding to the top and bottom of the valve body, and connecting platforms fixedly connected to both ends of the valve body;

[0008] An inlet flange is fixedly connected to one end of the connecting platform away from the valve body, and an outlet flange is fixedly connected to the other end of the connecting platform away from the valve body. Sealing gaskets are fixedly connected to the inner side of both the inlet flange and the outlet flange.

[0009] A T-shaped boss is fixedly connected to the top center of the valve body. The internal cavity of the T-shaped boss corresponds to the through hole on the top of the valve body. The end of the T-shaped boss away from the valve body is fixedly connected to a mounting flange by hexagonal bolts.

[0010] The end of the mounting flange away from the T-shaped boss is fixedly connected to the drive device mounting box. The bottom of the drive device mounting box has a through hole that extends into the valve body. The end of the drive device mounting box away from the mounting flange is fixedly connected to the end cap.

[0011] A drive gear is rotatably connected to the through hole inside the drive device mounting box. A drive rod meshes with the surface of the drive gear. One end of the drive rod extends to the outside of the drive device mounting box and is fixedly connected to an operating handwheel. A protective sleeve is fixedly connected inside the drive gear, and a valve stem is fixedly connected inside the protective sleeve.

[0012] One end of the valve stem is rotatably connected to a dustproof gasket, the outer side of the dustproof gasket is fixedly connected to the end cap, and the end of the valve stem away from the dustproof gasket is fixedly connected to a rotary plug, and a sealing gasket is fixedly connected to the surface of the rotary plug, with the end of the sealing gasket away from the rotary plug fitting against the inner side of the valve body.

[0013] A wastewater outlet is fixedly connected to the bottom through hole of the valve body, and a valve cover is rotatably connected to the end of the wastewater outlet away from the valve body.

[0014] Preferably, the mounting flange is I-shaped, with the upper diameter of the mounting flange being smaller than the lower diameter, and the lower end of the mounting flange being fixedly connected to the top of the T-shaped boss by hexagonal bolts.

[0015] Preferably, the end cap has a threaded hole on its surface that extends to the drive device mounting box, and a screw is fixedly connected inside the threaded hole. The end cap is fixedly connected to the drive device mounting box by the screw.

[0016] Preferably, the end of the drive rod near the drive gear is provided with a spline, the drive rod is meshed with the drive gear through the spline, and the drive rod is rotatably connected to the side wall of the drive device mounting box.

[0017] Preferably, the inner side of the dustproof gasket is fitted to the outer surface of the valve stem, and the outer side of the dustproof gasket is fixedly connected to the inner side of the end cap by glue or bolts.

[0018] Preferably, there is a flushing gap between the stopcock core and the inner wall of the valve body, and a water flow channel is opened through the inside of the stopcock core, the diameter of which is the same as the diameter of the openings at both ends of the valve body.

[0019] Preferably, the sealing gaskets on the surface of the cock core are fitted onto the outside of the cock core, and there are at least two sealing gaskets, which are located at the upper and lower ends of the cock core, respectively.

[0020] Preferably, the wastewater outlet is coaxially arranged with the bottom through hole of the valve body, the inner wall of the wastewater outlet is provided with internal threads, the outer wall of the valve cover is provided with external threads, and the valve cover is rotatably connected to the wastewater outlet through the threads.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This easy-to-disassemble and maintain plug valve features multiple quick-disassembly structures. The drive unit mounting box and mounting flange are positioned using an I-beam fit, and the end cover is quickly installed and removed using screw holes and bolts. The drive unit mounting box can be opened without disassembling complex connecting parts one by one, facilitating the inspection and maintenance of internal drive gears, drive rods, and other transmission components. The T-shaped boss on the top of the valve body is connected to the mounting flange with hexagonal bolts, allowing for the complete disassembly of the drive assembly. Combined with the rotatable valve cover at the bottom wastewater outlet, it is possible to quickly clean impurities inside the valve body or replace the plug core. The integrated design of the plug core and valve stem eliminates the need to disassemble core components when replacing seals or valve cores. Compared to the multi-layer flange bolt connection of traditional plug valves, the disassembly steps are reduced by more than 90%, significantly shortening maintenance time and reducing labor costs.

[0023] 2. This easy-to-disassemble and maintain plug valve features sealing gaskets on the inner sides of the inlet and outlet flanges and on the surface of the plug core. This multi-layered sealing structure effectively prevents media leakage. Combined with the dustproof gasket on the top of the valve stem, it prevents external dust from entering the drive unit mounting box, avoiding wear on transmission components. The drive rod meshes with the drive gear via a spline, achieving precise transmission with the operating handwheel. There is no jamming during rotation, ensuring the water flow channel of the plug core quickly aligns with or closes the valve body through-hole, resulting in high opening and closing efficiency. The valve body's shape, with a larger center and smaller ends, matches the flushing gap of the plug core. Combined with the bottom wastewater outlet, it allows for the periodic removal of deposited impurities through the valve cover, preventing blockages. This design is particularly suitable for media conveying scenarios containing small amounts of particulate matter, balancing sealing reliability and impurity handling capabilities. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Figure 1 This is a schematic diagram of the plug valve of this utility model that is easy to disassemble and maintain;

[0026] Figure 2 This is a schematic diagram of the plug valve of this utility model that is easy to disassemble and maintain;

[0027] Figure 3 This is a schematic diagram of the plug valve of this utility model that is easy to disassemble and maintain;

[0028] Figure 4 This utility model is for Figure 3 Enlarged diagram of point A in the middle.

[0029] Reference numerals: 1. Inlet flange; 2. Connecting platform; 3. Valve body; 4. Operating handwheel; 5. Drive rod; 6. Drive unit mounting box; 7. Plug core; 8. Sealing gasket; 9. Valve stem; 10. Drive gear; 11. Protective sleeve; 12. Water flow channel; 13. Hex bolt; 14. End cap; 15. Screw; 16. Screw hole; 17. T-shaped boss; 18. Wastewater outlet; 19. Valve cover; 20. Outlet flange; 21. Mounting flange; 22. Dustproof gasket. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Please see Figure 1-4 The present invention provides a technical solution: a plug valve that is easy to disassemble and maintain includes a valve body 3. The valve body 3 is shaped with a large center and small ends. The valve body 3 is hollow inside, with a through hole at the top and a through hole at the bottom corresponding to the top through hole. A connecting platform 2 is fixedly connected to both ends of the valve body 3.

[0035] An inlet flange 1 is fixedly connected to the end of the connecting platform 2 away from the valve body 3. A sealing gasket 8 is fixedly connected to the inside of the inlet flange 1. An outlet flange 20 is fixedly connected to the end of the connecting platform 2 away from the inlet flange 1 and away from the valve body 3. A sealing gasket 8 is also fixedly connected to the inside of the outlet flange 20. The sealing gaskets 8 inside the inlet flange 1 and the outlet flange 20 can form a double seal, effectively preventing media leakage and improving the sealing reliability of the device.

[0036] A T-shaped boss 17 is fixedly connected to the top center of the valve body 3. The internal cavity of the T-shaped boss 17 corresponds to the through hole at the top of the valve body 3. A mounting flange 21 is fixedly connected to the end of the T-shaped boss 17 away from the valve body 3. The mounting flange 21 is set in an I-shape, and the diameter of the upper end is smaller than the diameter of the lower end. The lower end of the mounting flange 21 is fixedly connected to the T-shaped boss 17 by a hex bolt 13. The cooperation between the I-shaped mounting flange 21 and the T-shaped boss 17 facilitates quick positioning and installation. With the connection of the hex bolt 13, the entire drive assembly can be quickly disassembled, greatly simplifying the disassembly and assembly steps.

[0037] The end of the mounting flange 21 away from the T-shaped boss 17 is fixedly connected to the drive device mounting box 6. The bottom of the drive device mounting box 6 is provided with a through hole that extends into the valve body 3. The end of the drive device mounting box 6 away from the mounting flange 21 is fixedly connected to the end cap 14.

[0038] The end cap 14 has a screw hole 16 on its surface, which extends to the drive unit mounting box 6. A screw 15 is fixedly connected inside the screw hole 16. The end cap 14 is quickly installed and removed from the drive unit mounting box 6 through the screw 15. The end cap 14 and the drive unit mounting box 6 are connected by the screw hole 16 and the screw 15, which can be installed and removed without complicated tools. This makes it easy to quickly open the mounting box to inspect and maintain the internal components, and significantly improves maintenance efficiency.

[0039] Inside the drive unit mounting box 6, a drive gear 10 is rotatably connected at the through hole. A drive rod 5 is meshed on the surface of the drive gear 10. One end of the drive rod 5 extends to the outside of the drive unit mounting box 6, and the other end is provided with a spline to cooperate with the drive gear 10. An operating handwheel is fixedly connected to the end of the drive rod 5 away from the drive gear 10. The drive rod 5 meshes with the drive gear 10 through the spline. With the cooperation of the operating handwheel 4, precise transmission can be achieved. The operation process is smooth and can quickly control the opening and closing state of the rotary valve 7, improving the stability and efficiency of operation.

[0040] A protective sleeve 11 is fixedly connected inside the drive gear 10. A valve stem 9 is fixedly connected inside the protective sleeve 11. A dustproof gasket 22 is rotatably connected to one end of the valve stem 9. The valve stem 9 fits inside the dustproof gasket 22 and is fixedly connected to the end cover 14 on the outside. The dustproof gasket 22 can effectively prevent external dust from entering the drive device mounting box 6, avoiding dust from causing wear to the drive gear 10, drive rod 5 and other transmission components, and extending the service life of the components.

[0041] A rotary valve core 7 is fixedly connected to the end of the valve stem 9 away from the dustproof gasket 22. The rotary valve core 7 and the valve body 3 are separated by a flushing gap. A water flow channel 12 is opened through the rotary valve core 7. The diameter of the water flow channel 12 is the same as the openings at both ends of the valve body 3.

[0042] A sealing gasket 8 is provided on the surface of the plug core 7. The sealing gasket 8 fits into the plug core 7. The end of the sealing gasket 8 away from the plug core 7 is fixedly connected to the inside of the valve body 3. The sealing gasket 8 on the surface of the plug core 7 fits into the inside of the valve body 3, which can further enhance the sealing performance of the device and prevent the medium from leaking between the valve body 3 and the plug core 7.

[0043] Wastewater outlet 18 is fixedly connected to the bottom through hole of valve body 3. Valve cover 19 is rotatably connected to the end of wastewater outlet 18 away from valve body 3. Wastewater outlet 18 and rotatable valve cover 19 cooperate with the flushing gap between plug core 7 and valve body 3 to periodically discharge impurities deposited in the valve and avoid blockage. It is especially suitable for media conveying scenarios containing a small amount of particulate matter, improving the functional adaptability of the device.

[0044] Working principle: In the initial state of the device, the end cover 14 is fixed to the drive device mounting box 6 through the screws 15 in the screw holes 16. The drive device mounting box 6 is connected to the T-shaped boss 17 on the top of the valve body 3 through the mounting flange 21 and hex bolts 13. The dustproof gasket 22 on the top of the valve stem 9 forms a dustproof seal. The valve cover 19 of the wastewater outlet 18 is closed. The sealing gaskets 8 on the surfaces of the inlet flange 1, the outlet flange 20, and the plug 7 ensure a seal. The water flow channel 12 of the plug 7 can be set to either open or closed. When opening or closing the valve, the operating handwheel 4 is turned to drive the drive rod 5 to rotate. The drive rod 5 meshes with the drive gear 10 through the spline. The drive gear 10 drives the valve through the protective sleeve 11. Rotating the rod 9 and the plug 7 aligns the water flow channel 12 with or deviates from the openings at both ends of the valve body 3 to achieve conduction or closure. When impurities accumulate inside the valve body 3, rotating the valve cover 19 opens the wastewater outlet 18, allowing cleaning medium to be introduced through the flushing gap between the plug 7 and the valve body 3 to flush away impurities. After the impurities are discharged from the wastewater outlet 18, the valve cover 19 is closed. When maintaining the drive components, unscrewing the screws 15 and removing the end cover 14 exposes the interior of the drive unit mounting box 6. When maintaining the valve rod 9 and the plug 7, unscrewing the hex bolts 13 allows the drive unit mounting box 6, mounting flange 21, valve rod 9, and plug 7 to be removed as a whole. After maintenance, reassemble them in reverse order, ensuring the dustproof gasket 22 is sealed, and the device can be put back into use.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A plug valve that is easy to disassemble and maintain, comprising a valve body (3), characterized in that: The valve body (3) is hollow with a large center and small ends. The top and bottom of the valve body (3) are respectively provided with through holes, and the two ends of the valve body (3) are fixedly connected with connecting platforms (2). The end of the connecting platform (2) away from the valve body (3) is fixedly connected to the inlet flange (1), and the end of the other connecting platform (2) away from the valve body (3) is fixedly connected to the outlet flange (20). The inner side of the inlet flange 1 (1) and the inner side of the outlet flange (20) are both fixedly connected to the sealing gasket (8). The valve body (3) is fixedly connected to a T-shaped boss (17) at the top center. The internal cavity of the T-shaped boss (17) corresponds to the through hole at the top of the valve body (3). The end of the T-shaped boss (17) away from the valve body (3) is fixedly connected to a mounting flange (21) by a hexagonal bolt (13). The end of the mounting flange (21) away from the T-shaped boss (17) is fixedly connected to the drive device mounting box (6). The bottom of the drive device mounting box (6) is provided with a through hole that extends into the valve body (3). The end of the drive device mounting box (6) away from the mounting flange (21) is fixedly connected to the end cap 14 (14). The drive device mounting box (6) is rotatably connected to the through hole inside, and a drive rod (5) is meshed on the surface of the drive gear (10). One end of the drive rod (5) extends to the outside of the drive device mounting box (6) and is fixedly connected to the operating handwheel (4). A protective sleeve (11) is fixedly connected inside the drive gear (10), and a valve stem (9) is fixedly connected inside the protective sleeve (11). One end of the valve stem (9) is rotatably connected to a dustproof gasket (22), the outer side of the dustproof gasket (22) is fixedly connected to the end cap (14), the end of the valve stem (9) away from the dustproof gasket (22) is fixedly connected to a rotary plug (7), the surface of the rotary plug (7) is fixedly connected to a sealing gasket (8), and the end of the sealing gasket (8) away from the rotary plug (7) is in contact with the inner side of the valve body (3); Wastewater outlet (18) is fixedly connected to the bottom through hole of the valve body (3), and valve cover (19) is rotatably connected to the end of the wastewater outlet (18) away from the valve body (3).

2. The plug valve for easy disassembly and maintenance according to claim 1, characterized in that: The mounting flange (21) is I-shaped, with the upper diameter of the mounting flange (21) being smaller than the lower diameter. The lower end of the mounting flange (21) is fixedly connected to the top of the T-shaped boss (17) by a hexagonal bolt (13).

3. The plug valve for easy disassembly and maintenance according to claim 2, characterized in that: The end cap (14) has a screw hole (16) that extends through to the drive device mounting box (6). A screw (15) is fixedly connected inside the screw hole (16). The end cap (14) is fixedly connected to the drive device mounting box (6) by the screw (15).

4. The plug valve for easy disassembly and maintenance according to claim 3, characterized in that: The drive rod (5) is provided with a spline at one end near the drive gear (10). The drive rod (5) is meshed with the drive gear (10) through the spline. The drive rod (5) is rotatably connected to the side wall of the drive device mounting box (6).

5. The plug valve for easy disassembly and maintenance according to claim 4, characterized in that: The inner side of the dustproof gasket (22) is attached to the outer surface of the valve stem (9), and the outer side of the dustproof gasket (22) is fixedly connected to the inner side of the end cap (14) by glue or bolts.

6. The plug valve for easy disassembly and maintenance according to claim 5, characterized in that: There is a flushing gap between the stopcock (7) and the inner wall of the valve body (3). A water flow channel (12) is opened through the stopcock (7), and the diameter of the water flow channel (12) is the same as the diameter of the openings at both ends of the valve body (3).

7. The plug valve for easy disassembly and maintenance according to claim 6, characterized in that: The sealing gaskets (8) on the surface of the valve core (7) are fitted on the outside of the valve core (7). There are at least two sealing gaskets (8), which are located at the upper and lower ends of the valve core (7) respectively.

8. The plug valve for easy disassembly and maintenance according to claim 7, characterized in that: The wastewater outlet (18) is coaxially arranged with the bottom through hole of the valve body (3). The inner wall of the wastewater outlet (18) is provided with an internal thread, and the outer wall of the valve cover (19) is provided with an external thread. The valve cover (19) is rotatably connected to the wastewater outlet (18) through the thread.

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