Valve structure with better sealing performance

Abstract

The utility model discloses a valve structure with better sealing performance, relates to the technical field of valves, solves the problem that when a valve cover is disassembled, a plurality of bolts at the top of the valve cover need to be disassembled firstly, and the maintenance efficiency is low, and comprises a valve body, the valve cover and a mounting seat, a valve rod is rotatably installed in the valve deck, a driving piece is arranged at the upper end of the valve rod, a valve element is in threaded connection with the lower end of the valve rod, the installation base is fixedly connected to the top of the valve body, an installation opening matched with the valve deck is formed in the middle of the installation base, and locking grooves are formed in the two sides of the valve deck correspondingly. Cavities are formed in the two sides of the mounting base, gears are rotationally connected into the cavities, rotating discs are fixedly connected to the tops of the gears, L-shaped toothed plates are connected to one sides of the gears in an engaged mode, and locking rods are fixedly connected to one ends of the L-shaped toothed plates. Due to the arrangement of the mounting seat, the maintenance efficiency of the valve can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve structure with better sealing performance. Background Art

[0002] A valve is a device used to control the direction, pressure and flow of fluid in a fluid system. It is a device that allows the medium in pipes and equipment to flow or stop and control its flow.

[0003] The existing Chinese patent with announcement number CN213145378U discloses a valve structure with a long service life, including a valve body, an inlet pipe is fixedly installed on the right side of the valve body, a water outlet pipe is fixedly installed on the left side of the valve body, a valve cover is movably connected to the top of the valve body, a threaded pipe is fixedly inlaid inside the valve cover, a connecting frame is fixedly installed on the top of the valve cover, a valve stem with one end passing through the threaded pipe and extending into the inside of the valve body is movably installed on the top of the connecting frame, a turntable is fixedly installed on the top of the valve stem, a valve core is fixedly installed on the outside of the bottom end of the valve stem, a first sealing ring is fixedly installed on the outside of the valve core, a sealing block penetrated by the valve stem is fixedly installed on the bottom of the valve cover, an installation cavity is provided inside the sealing block, two springs are fixedly installed on the left and right inner walls of the installation cavity, and the other ends of the two springs on the same side are fixedly connected to the pressure plate, and the opposite sides of the two pressure plates are fixedly connected to the second sealing ring, and a protective layer is provided on the outside of the sealing block.

[0004] With respect to the above-mentioned related technologies, the inventors have found that there are at least the following problems in the technologies: in the above-mentioned technologies, although the sealing block can be disassembled and repaired, when removing the valve cover, it is necessary to first remove the multiple bolts on the top of the valve cover, which is relatively cumbersome and has low maintenance efficiency. Utility Model Content

[0005] In order to improve the problem that when removing the valve cover, multiple bolts on the top of the valve cover need to be removed first, which is relatively cumbersome and has low maintenance efficiency, the utility model provides a valve structure with better sealing performance.

[0006] The utility model provides a valve structure with better sealing performance, which adopts the following technical solutions:

[0007] A valve structure with better sealing performance includes a valve body, a valve cover and a mounting seat. The valve cover is detachably mounted on the top of the valve body. A valve stem is rotatably mounted inside the valve cover. A driving member is provided at the upper end of the valve stem. A valve core is threadedly connected to the lower end of the valve stem. A sealing gasket is fixedly connected to the outer surface of the valve core.

[0008] The mounting seat is fixedly connected to the top of the valve body, and a mounting port adapted to the valve cover is provided in the middle of the mounting seat. Locking grooves are provided on both sides of the valve cover, and a cavity is provided on both sides of the mounting seat. A gear is rotatably connected in the cavity, and a turntable is fixedly connected to the top of the gear. An L-shaped tooth plate is meshed and connected to one side of the gear, and a locking rod is fixedly connected to one end of the L-shaped tooth plate.

[0009] By adopting the above technical solution, when opening and closing the valve, the driving member can be controlled to drive the valve stem to rotate, so that the valve stem drives the valve core to rise and fall along the valve stem in the valve body, thereby realizing the opening and closing of the valve. When removing the valve cover, it is only necessary to rotate the turntable, and the turntable drives the gear to rotate, so that the gear drives the L-shaped tooth plate to slide in the cavity, and the L-shaped tooth plate drives the locking rod to move out of the locking groove of the valve cover, so that the fixation of the valve cover can be released, and then the valve cover can be opened, and the valve core can be taken out of the valve body. The operation is relatively convenient, which improves the maintenance efficiency.

[0010] Optionally, the driving member includes a handwheel, a worm and a worm wheel, the handwheel is fixedly mounted on the end of the worm, the worm is rotatably mounted on the valve cover, and the worm wheel is fixedly mounted on the upper end of the valve stem and meshes with the worm.

[0011] By adopting the above technical solution, during operation, the handwheel can be rotated by hand, so that the handwheel drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the valve stem to operate. Since the transmission of the worm and the worm wheel is self-locking, the valve stem can be prevented from operating on its own, the stability of the valve stem is improved, and the occurrence of valve loosening is reduced.

[0012] Optionally, guide rods are fixedly connected to both sides of the valve stem inside the valve cover, and the upper end of the valve core is slidably sleeved on the guide rods.

[0013] By adopting the above technical solution, the guide rod can play a guiding and limiting role on the valve core, thereby improving the stability of the valve core.

[0014] Optionally, a positioning groove adapted to the guide rod is provided on the top of the valve body, and the lower end of the guide rod is inserted into the positioning groove.

[0015] By adopting the above technical solution, when installing the valve cover, the lower end of the guide rod will be inserted into the positioning groove, which can have a positioning effect on the guide rod and the valve cover. After the valve cover is removed, the valve core can be easily removed from the lower end of the guide rod.

[0016] Optionally, a sealing sleeve is embedded in the top of the valve body, and the valve core slides through the sealing sleeve.

[0017] By adopting the above technical solution, the sealing performance of the connection between the valve core and the valve body can be improved, thereby improving the sealing performance of the valve.

[0018] Optionally, the inner bottom wall of the valve body is provided with a limiting groove adapted for the valve core, and the lower end of the valve core is inserted into the limiting groove.

[0019] By adopting the above technical solution, when the valve is in a closed state, the valve core will drop and insert into the limit groove. The limit groove can limit the lower end of the valve core, prevent the valve core from shaking, and improve the stability of the valve core when the valve is closed.

[0020] Optionally, a groove is provided on the top of the mounting seat, the turntable is arranged in the groove, and a cover plate is hinged on one side of the mounting seat close to the groove.

[0021] By adopting the above technical solution and arranging the groove and the cover plate, the turntable can be protected, thereby preventing the turntable from being touched at will and ensuring the service life of the turntable.

[0022] Optionally, a limiting sliding groove is provided on the inner bottom wall of the cavity, and a sliding block is fixedly connected to the bottom of the L-shaped tooth plate, and the sliding block is slidably connected in the limiting sliding groove.

[0023] By adopting the above technical solution, the L-shaped tooth plate can be limited.

[0024] In summary, the present invention has the following beneficial effects:

[0025] 1. The utility model is provided with a mounting seat. When removing the valve cover, it is only necessary to rotate the turntable. The turntable drives the gear to rotate, causing the gear to drive the L-shaped toothed plate to slide in the cavity. The L-shaped toothed plate drives the locking rod to move out of the locking groove of the valve cover, thereby releasing the fixation of the valve cover. Then, the valve cover can be opened and the valve core can be taken out of the valve body. The operation is relatively convenient, which improves the maintenance efficiency.

[0026] 2. The utility model adopts the setting of the driving part and utilizes the self-locking property of the transmission of the worm and the worm wheel, thereby preventing the valve stem from operating on its own, improving the stability of the valve stem, and reducing the occurrence of valve loosening. Through the setting of the limit groove, when the valve is in the closed state, the valve core will drop and insert into the limit groove. The limit groove can limit the lower end of the valve core, avoiding the valve core from shaking, improving the stability of the valve core when the valve is closed, and thus making the valve more sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0029] Figure 3 This utility model Figure 2A magnified view of the structure in the middle.

[0030] Description of reference numerals:

[0031] 1. Valve body; 11. Positioning groove; 12. Sealing sleeve; 13. Limiting groove; 2. Valve cover; 21. Valve stem; 22. Driving member; 221. Handwheel; 222. Worm; 223. Worm gear; 23. Valve core; 24. Sealing gasket; 25. Locking groove; 26. Guide rod; 3. Mounting seat; 31. Mounting port; 32. Gear; 33. Turntable; 34. L-shaped tooth plate; 35. Locking rod; 36. Groove; 37. Cover plate; 38. Limiting slide groove; 39. Slider. DETAILED DESCRIPTION

[0032] The following is in conjunction with the appended drawings in the embodiment of the present utility model. Figure 1-3 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0033] Please refer to Figure 1-2 A valve structure with better sealing performance includes a valve body 1, a valve cover 2 and a mounting seat 3. Connecting pipes are provided at both ends of the valve body 1. The ends of the connecting pipes are flange or threaded structures so that the valve can be installed according to needs. The valve cover 2 is detachably mounted on the top of the valve body 1, and a valve stem 21 is rotatably mounted inside the valve cover 2. A driving member 22 is provided at the upper end of the valve stem 21, and a thread is provided on the surface of the valve stem 21. The lower end of the valve stem 21 is threadedly connected to a valve core 23, and a threaded hole is provided on the top of the valve core 23 that matches the valve stem 21. Guide rods 26 are fixedly connected on both sides of the valve stem 21 inside the valve cover 2, and the upper end of the valve core 23 is slidably sleeved on the guide rods 26. The guide rods 26 can guide and limit the valve core 23, thereby improving the stability of the valve core 23. Through the arrangement of the valve stem 21, the driving member 22 and the valve core 23, when opening and closing the valve, the driving member 22 can be manipulated to make the driving member 22 drive the valve stem 21 to rotate, so that the valve stem 21 drives the valve core 23 to rise and fall along the valve stem 21 in the valve body 1, thereby realizing the opening and closing of the valve.

[0034] Specifically, the driving member 22 includes a handwheel 221, a worm 222 and a worm gear 223. The handwheel 221 is fixedly mounted on the end of the worm 222, and the worm 222 is rotatably mounted on the valve cover 2. The worm gear 223 is fixedly mounted on the upper end of the valve stem 21 and meshes with the worm 222. Through the setting of the driving member 22, during operation, the handwheel 221 can be rotated by hand to make the handwheel 221 drive the worm 222 to rotate, and the worm 222 drives the worm gear 223 to rotate, and the worm gear 223 drives the valve stem 21 to operate. Since the transmission of the worm 222 and the worm gear 223 is self-locking, the valve stem 21 can be prevented from operating on its own, the stability of the valve stem 21 is improved, and the occurrence of valve loosening is reduced.

[0035] Among them, the outer surface of the valve core 23 is fixedly connected with a sealing gasket 24. Through the setting of the sealing gasket 24, the sealing between the valve core 23 and the inner wall of the valve body 1 can be improved. The top of the valve body 1 is embedded with a sealing sleeve 12, and the valve core 23 slides through the sealing sleeve 12. Through the setting of the sealing sleeve 12, the sealing of the connection between the valve core 23 and the valve body 1 can be improved, so that the sealing of the valve is better.

[0036] In addition, the inner bottom wall of the valve body 1 is provided with a limiting groove 13 adapted for the valve core 23, and the lower end of the valve core 23 is inserted into the limiting groove 13. Through the setting of the limiting groove 13, when the valve is in a closed state, the valve core 23 will drop and be inserted into the limiting groove 13. The limiting groove 13 can limit the lower end of the valve core 23, thereby preventing the valve core 23 from shaking and improving the stability of the valve core 23 when the valve is closed.

[0037] Reference Figure 1 and Figure 3 The mounting seat 3 is fixedly connected to the top of the valve body 1. The middle part of the mounting seat 3 is provided with a mounting port 31 adapted to the valve cover 2. Locking grooves 25 are provided on both sides of the valve cover 2. A cavity is provided on both sides of the mounting seat 3. A gear 32 is rotatably connected in the cavity. A turntable 33 is fixedly connected to the top of the gear 32. An L-shaped tooth plate 34 is meshed and connected to one side of the gear 32. A limiting slide groove 38 is provided on the inner bottom wall of the cavity. A slider 39 is fixedly connected to the bottom of the L-shaped tooth plate 34. The slider 39 is slidably connected to the limiting slide groove 38. Inside, one end of the L-shaped toothed plate 34 is fixedly connected to a locking rod 35. Through the setting of the mounting seat 3, when removing the valve cover 2, it is only necessary to rotate the turntable 33. The turntable 33 drives the gear 32 to rotate, so that the gear 32 drives the L-shaped toothed plate 34 to slide in the cavity, so that the L-shaped toothed plate 34 drives the locking rod 35 to move out of the locking groove 25 of the valve cover 2, and the fixation of the valve cover 2 can be released. Then the valve cover 2 can be opened and the valve core 23 can be taken out from the valve body 1. The operation is relatively convenient, which improves the maintenance efficiency.

[0038] Among them, a groove 36 is opened at the top of the mounting base 3, and the turntable 33 is arranged in the groove 36. A cover plate 37 is hinged on the side of the mounting base 3 close to the groove 36. Through the setting of the groove 36 and the cover plate 37, the turntable 33 can be protected, and the turntable 33 can be prevented from being touched at will, thereby ensuring the service life of the turntable 33.

[0039] Reference Figure 2 A positioning groove 11 is provided on the top of the valve body 1, which is adapted to the guide rod 26. The lower end of the guide rod 26 is inserted into the positioning groove 11. Through the setting of the positioning groove 11, when the valve cover 2 is installed, the lower end of the guide rod 26 will be inserted into the positioning groove 11, which can position the guide rod 26 and the valve cover 2. After the valve cover 2 is disassembled, it is convenient to remove the valve core 23 from the lower end of the guide rod 26.

[0040] The implementation principle of the present invention is as follows: through the arrangement of the valve stem 21, the driving member 22 and the valve core 23, when opening and closing the valve, the driving member 22 can be controlled by manipulating the driving member 22. During operation, the hand wheel 221 can be rotated by hand, so that the hand wheel 221 drives the worm 222 to rotate, so that the worm 222 drives the worm gear 223 to rotate, so that the worm gear 223 drives the valve stem 21 to operate, so that the valve stem 21 drives the valve core 23 to rise and fall along the valve stem 21 in the valve body 1, thereby realizing the opening and closing of the valve. Since the transmission of the worm 222 and the worm gear 223 has a self-locking property, the valve stem 21 can be prevented from operating on its own, thereby improving the stability of the valve stem 21 and reducing the occurrence of valve loosening. When the valve is in the closed state, the valve core 23 will fall and insert into the limiting groove 13. The limiting groove 13 can limit the lower end of the valve core 23 to prevent the valve core 23 from shaking, thereby improving the stability of the valve core 23 when the valve is closed.

[0041] When removing the valve cover 2, it is only necessary to rotate the turntable 33, which drives the gear 32 to rotate through the turntable 33, so that the gear 32 drives the L-shaped toothed plate 34 to slide in the cavity, and the L-shaped toothed plate 34 drives the locking rod 35 to move out of the locking groove 25 of the valve cover 2, so that the valve cover 2 can be released from the fixation. Then the valve cover 2 can be opened and the valve core 23 can be taken out from the valve body 1. The operation is relatively convenient, which improves the maintenance efficiency.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A valve structure with improved sealing performance, comprising a valve body (1), a valve cover (2) and a mounting seat (3), characterized in that: The valve cover (2) is detachably mounted on the top of the valve body (1), a valve stem (21) is rotatably mounted inside the valve cover (2), a driving member (22) is provided at the upper end of the valve stem (21), a valve core (23) is threadedly connected to the lower end of the valve stem (21), and a sealing gasket (24) is fixedly connected to the outer surface of the valve core (23); The mounting seat (3) is fixedly connected to the top of the valve body (1), and a mounting opening (31) adapted to the valve cover (2) is provided in the middle of the mounting seat (3), and locking grooves (25) are provided on both sides of the valve cover (2). A cavity is provided on both sides of the mounting seat (3), and a gear (32) is rotatably connected in the cavity. A turntable (33) is fixedly connected to the top of the gear (32), and an L-shaped tooth plate (34) is meshedly connected to one side of the gear (32), and a locking rod (35) is fixedly connected to one end of the L-shaped tooth plate (34).

2. A valve structure with improved sealing performance according to claim 1, characterized in that: The driving member (22) comprises a handwheel (221), a worm (222) and a worm gear (223); the handwheel (221) is fixedly mounted on the end of the worm (222); the worm (222) is rotatably mounted on the valve cover (2); and the worm gear (223) is fixedly mounted on the upper end of the valve stem (21) and meshes with the worm (222).

3. A valve structure with improved sealing performance according to claim 1, characterized in that: Guide rods (26) are fixedly connected to both sides of the valve stem (21) inside the valve cover (2), and the upper end of the valve core (23) is slidably sleeved on the guide rods (26).

4. A valve structure with improved sealing performance according to claim 3, characterized in that: A positioning groove (11) adapted to the guide rod (26) is provided on the top of the valve body (1), and the lower end of the guide rod (26) is inserted into the positioning groove (11).

5. A valve structure with improved sealing performance according to claim 1, characterized in that: A sealing sleeve (12) is embedded in the top of the valve body (1), and the valve core (23) slides through the sealing sleeve (12).

6. A valve structure with improved sealing performance according to claim 1, characterized in that: The inner bottom wall of the valve body (1) is provided with a limiting groove (13) adapted to the valve core (23), and the lower end of the valve core (23) is inserted into the limiting groove (13).

7. A valve structure with improved sealing performance according to claim 1, characterized in that: A groove (36) is provided on the top of the mounting seat (3), the turntable (33) is arranged in the groove (36), and a cover plate (37) is hingedly connected to one side of the mounting seat (3) close to the groove (36).

8. A valve structure with improved sealing performance according to claim 1, characterized in that: A limiting sliding groove (38) is provided on the inner bottom wall of the cavity, and a slider (39) is fixedly connected to the bottom of the L-shaped tooth plate (34), and the slider (39) is slidably connected in the limiting sliding groove (38).

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