Vacuum stop valve

Abstract

The utility model relates to the technical field of vacuum stop valves, and discloses a vacuum stop valve which comprises a valve body, a valve cover is installed on the top of the valve body, an installation frame is fixedly connected to the top of the valve cover, a threaded rod is rotationally connected to the inner diameter of the installation frame, and a rotating wheel is fixedly connected to the top of the threaded rod. First bosses are fixedly connected to the two sides of the middle of the front end of the mounting frame, and second bosses are fixedly connected to the two sides of the top of the front end of the mounting frame. According to the vacuum stop valve, the surface of the oiling device abuts against the surface of the threaded rod, lubricating oil can be smeared on the surface of the threaded rod through the oiling device, meanwhile, through cooperative use of a first sliding groove and a first sliding block, a user can replace the abraded oiling device conveniently, and therefore lubrication of the surface of the threaded rod is guaranteed; and the situation that the surface of the threaded rod is rusted is reduced, use by a user is facilitated, and waste of financial resources and material resources is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum stop valves, in particular to a vacuum stop valve. Background Art

[0002] The vacuum stop valve and flange gate valve are valves of the same type. The difference is that its closing piece is a valve body, which rotates around the center line of the valve body to achieve opening and closing. The gate valve is mainly used in the pipeline to cut off, distribute and change the flow direction of the medium.

[0003] A Chinese patent discloses a vacuum stop valve (authorization announcement number CN219453194U). This patented technology can achieve the purpose of replacing the gasket by setting a replacement device by screwing the two nuts on the flange and loosening the two nuts, thereby avoiding the need to completely disassemble the flange between the valve body and the pipeline to replace the gasket, and then to position and install the flange between the pipeline again to replace the gasket. This reduces the workload of the staff for replacing the gasket between the vacuum stop valve and the pipeline, and improves the replacement efficiency of the vacuum stop valve to a certain extent. However, during long-term use, the screw rod used to control the flow may rust, resulting in slippage or inability to rotate when the user adjusts the vacuum valve through the screw rod, thereby affecting the use. In severe cases, the vacuum valve may need to be replaced, resulting in a waste of financial and material resources.

[0004] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: during long-term use, the screw rod may rust, thereby affecting the user's use. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the prior art has the disadvantage that the screw rod may be rusted after long-term use, thus affecting the use of the user. For this reason, we propose a vacuum stop valve.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: it comprises a valve body, a valve cover is installed on the top of the valve body, a mounting frame is fixedly connected to the top of the valve cover, a threaded rod is rotatably connected to the inner diameter of the mounting frame, a rotating wheel is fixedly connected to the top of the threaded rod, a first boss is fixedly connected to both sides of the middle of the front end of the mounting frame, a second boss is fixedly connected to both sides of the top of the front end of the mounting frame, a first slide groove is provided at the bottom of the first slide groove, a first slider is slidably connected to the inner diameter of the first slide groove, and the facing surfaces of the first slider are fixedly An oiling device is connected, the surface of the oiling device is in contact with the surface of the threaded rod, a through groove is provided at the front end of the first boss, a slot is provided at the rear end of the inner diameter of the first slide groove, a movable block is slidably connected to the inner diameter of the through groove, the surface of the movable block is plugged into the inner diameter of the slot, a limiting hole is provided on the surface of the movable block, a first protrusion is fixedly connected to the front end of the first boss, the inner diameter of the first protrusion is slidably connected to the limiting rod, the surface of the limiting rod is plugged into the inner diameter of the limiting hole, and the top of the limiting rod is fixedly connected to the first limiting block.

[0007] Preferably, a first spring is fixedly connected to the top of the first protrusion, the top of the first spring is fixedly connected to the bottom of the first limiting block, and the inner diameter of the first spring is slidably connected to the surface of the limiting rod.

[0008] Preferably, one end of the first sliding block away from the oiling device is fixedly connected to a limit plate, and the limit plate is adapted to the first sliding groove.

[0009] Preferably, the facing surfaces of the second boss are fixedly connected with an oil box, the bottom of the oil box is fixedly connected with an oil outlet, the top of the oiling device is fixedly connected with the first oil inlet, the inner diameter of the first oil inlet is plugged into the surface of the oil outlet, both sides of the bottom of the oil box are fixedly connected with convex plates, the surface of the oil outlet is provided with a slot, the inner diameter of the slot is slidably connected with the limiting plate, the front end of the oil box is fixedly connected with a second boss, the bottom of the second boss is fixedly connected with a second spring, the bottom of the second spring is fixedly connected with a limiting ring, the top of the limiting plate is fixedly connected with a fixing column, the number of the fixing columns is several, the surface of the fixing column is plugged into the inner diameter of the limiting ring, the surface of the convex plate is provided with a second slide groove, both sides of the limiting plate are fixedly connected with second sliders, the surface of the second slider is slidably connected to the inner diameter of the second slide groove.

[0010] Preferably, the tops of both sides of the limiting ring are fixedly connected with sliding rods, the tops of the sliding rods are fixedly connected with connecting plates, sliding holes are opened on both sides of the top of the second protrusion, and the surface of the sliding rod is slidably connected to the inner diameter of the sliding hole.

[0011] Preferably, a second oil inlet is fixedly connected to the top of the oil box, and an oil inlet cover is threadedly connected to the surface of the second oil inlet.

[0012] Technical effects and advantages of the utility model:

[0013] In the utility model, through the abutment between the surface of the oiling device and the surface of the threaded rod, the surface of the threaded rod can be coated with lubricating oil by the oiling device, and at the same time, through the coordinated use of the first slide groove and the first sliding block, it is convenient for the user to replace the worn oiling device, thereby ensuring the lubrication of the surface of the threaded rod and reducing the rust on the surface of the threaded rod, so as to facilitate the use of the user and reduce the waste of financial and material resources.

[0014] In the utility model, the flow of lubricating liquid left in the oil outlet is controlled by plugging the flow limiting plate into the slot, so as to prevent the surface of the threaded rod from being coated with too much lubricating liquid, thereby reducing the friction force on the surface of the threaded rod and causing the thread of the threaded rod to slip when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of the first boss of the utility model;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0018] Figure 4 This is a schematic diagram of the structure of the oiling device of the utility model;

[0019] Figure 5 This is a schematic diagram of the oil box structure of the utility model;

[0020] Figure 6 It is a cross-sectional schematic diagram of the oil outlet of the utility model.

[0021] Legend: 1. Valve body; 2. Valve cover; 3. Mounting frame; 4. Threaded rod; 5. Rotor; 6. First boss; 7. Second boss; 8. First slide groove; 9. First slider; 10. Oiling device; 11. Through groove; 12. Slot; 13. Movable block; 14. Limiting hole; 15. First protrusion; 16. Limiting rod; 17. First limiting block; 18. First spring; 19. Limiting plate; 20. Oil box; 21. Oil outlet; 22. First oil inlet; 23. Protruding plate; 24. Slot; 25. Limiting plate; 26. Second protrusion; 27. Second spring; 28. Limiting ring; 29. ​​Fixed column; 30. Second slide groove; 31. Second slider; 32. Sliding rod; 33. Connecting plate; 34. Sliding hole; 35. Second oil inlet; 36. Oil port cover. DETAILED DESCRIPTION

[0022] The present invention will now be further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] Reference Figure 1-4 As shown, the utility model provides a technical solution: a vacuum stop valve, including a valve body 1, a valve cover 2 is installed on the top of the valve body 1, a mounting frame 3 is fixedly connected to the top of the valve cover 2, the inner diameter of the mounting frame 3 is rotatably connected to a threaded rod 4, the top of the threaded rod 4 is fixedly connected to a runner 5, both sides of the middle of the front end of the mounting frame 3 are fixedly connected to a first boss 6, both sides of the top of the front end of the mounting frame 3 are fixedly connected to a second boss 7, a first slide groove 8 is opened at the bottom of the first boss 6, the inner diameter of the first slide groove 8 is slidably connected to a first slider 9, the opposite surface of the first slider 9 is fixedly connected to an oiling device 10, and the oiling device 10 The surface is in contact with the surface of the threaded rod 4, a through groove 11 is provided at the front end of the first boss 6, a slot 12 is provided at the rear end of the inner diameter of the first slide groove 8, a movable block 13 is slidably connected to the inner diameter of the through groove 11, the surface of the movable block 13 is plugged with the inner diameter of the slot 12, a limiting hole 14 is provided on the surface of the movable block 13, a first protrusion 15 is fixedly connected to the front end of the first boss 6, the inner diameter of the first protrusion 15 is slidably connected to the limiting rod 16, the surface of the limiting rod 16 is plugged with the inner diameter of the limiting hole 14, and the top of the limiting rod 16 is fixedly connected to the first limiting block 17, and the user drives the threaded rod by rotating the rotating wheel 5 4 is rotated, so that the threaded rod 4 moves up and down. When the threaded rod 4 moves, the surface of the threaded rod 4 is lubricated by the contact between the oiling device 10 and the surface of the threaded rod 4, thereby preventing the threaded rod 4 from being rusted and stuck, which is inconvenient for the user to use. The oiling device 10 will wear due to the contact with the surface of the threaded rod 4 during use. When the oiling device 10 is worn to the point where it cannot be used normally, the first limit block 17 is moved upward to drive the limit rod 16 to disengage from the inner diameter of the limit hole 14, and the movable block 13 is pulled out from the front end of the valve body 1, so that the first slider 9 can be smoothly The oiling device 10 is disengaged from the first slide groove 8 to facilitate the replacement of the oiling device 10. When the replaced oiling device 10 is placed on the top of the inner diameter of the first slide groove 8 through the sliding connection between the first slider 9 and the first slide groove 8, the movable block 13 is inserted into the inner diameter of the slot 12 by inserting the movable block 13 to the rear end, so that the movable block 13 is plugged into the inner diameter of the slot 12, thereby fixing the position of the oiling device 10. At the same time, the first limit block 17 is moved downward to drive the limit rod 16 to be inserted into the inner diameter of the limit hole 14, thereby fixing the position of the movable block 13, so as to facilitate the subsequent use of the oiling device 10, thereby ensuring that the surface of the threaded rod 4 can maintain a relatively lubricated state.

[0024] Below we will discuss in detail the specific settings and functions of the main innovation name and auxiliary innovation name.

[0025] Reference Figure 1-4 As shown, in this embodiment: the top of the first protrusion 15 is fixedly connected with a first spring 18, the top of the first spring 18 is fixedly connected to the bottom of the first limit block 17, and the inner diameter of the first spring 18 is slidably connected to the surface of the limit rod 16. When the limit rod 16 is inserted into the inner diameter of the limit hole 14, the tension generated by the first spring 18 generates a downward pulling force on the first limit block 17, thereby limiting the first limit block 17 to prevent the first limit block 17 from driving the limit rod 16 to disengage from the inner diameter of the limit hole 14. The end of the first sliding block 9 away from the oiling device 10 is fixedly connected with a limit plate 19, and the limit plate 19 is adapted to the first slide groove 8. The position of the oiling device 10 is limited by the limit plate 19 to prevent the oiling device 10 from being offset during use, which causes the surface of the oiling device 10 to fit too tightly with the surface of the threaded rod 4, causing the threaded rod 4 to be stuck.

[0026] Reference Figure 4 , Figure 5 and Figure 6As shown, in this embodiment: the facing surface of the second boss 7 is fixedly connected with an oil box 20, the bottom of the oil box 20 is fixedly connected with an oil outlet 21, the top of the oiling device 10 is fixedly connected with a first oil inlet 22, the inner diameter of the first oil inlet 22 is plugged with the surface of the oil outlet 21, both sides of the bottom of the oil box 20 are fixedly connected with convex plates 23, the surface of the oil outlet 21 is provided with a slot 24, the inner diameter of the slot 24 is slidably connected with a limiting plate 25, the front end of the oil box 20 is fixedly connected with a second convex block 26, and the bottom of the second convex block 26 is fixedly connected with a second elastic block 26. The bottom of the second spring 27 is fixedly connected to the limiting ring 28, and the top of the limiting plate 25 is fixedly connected to a fixing column 29. The number of the fixing columns 29 is several, and the surface of the fixing column 29 is plugged with the inner diameter of the limiting ring 28. The surface of the convex plate 23 is provided with a second slide groove 30. Both sides of the limiting plate 25 are fixedly connected with a second slider 31, and the surface of the second slider 31 is slidably connected with the inner diameter of the second slide groove 30. When the user moves the limiting ring 28 upward, the limiting ring 28 is separated from the surface of the fixing column 29, and the limiting plate 25 is released. The limiting function is to control the oil output of the oil outlet 21 by moving the limiting plate 25 to prevent excessive oil output from causing excessive lubricating oil on the surface of the threaded rod 4, thereby reducing the friction on the surface of the threaded rod 4 and causing thread slippage. When the user replaces the oiling device 10, the oil outlet 21 is completely sealed by the limiting plate 25 to reduce the waste of oil. The tops of both sides of the limiting ring 28 are fixedly connected with sliding rods 32, and the tops of the sliding rods 32 are fixedly connected with connecting plates 33. Both sides of the top of the second protrusion 26 are provided with sliding holes 34, and the sliding rods 32 are fixedly connected with connecting plates 33. The surface of the slide hole 34 is in sliding connection with the inner diameter of the slide hole 34, and the sliding connection between the surface of the slide rod 32 and the inner diameter of the slide hole 34 limits the limit ring 28 to prevent the limit ring 28 from tipping over when it moves. The top of the oil box 20 is fixedly connected with a second oil inlet 35, and the surface of the second oil inlet 35 is threadedly connected with an oil port cover 36. The inner diameter of the oil port cover 36 is threadedly connected with the surface of the second oil inlet 35, so that the oil box 20 is sealed to prevent impurities from entering the interior of the oil box 20 and prevent the oil in the oil box 20 from evaporating.

[0027] The utility model works as follows: when the user drives the threaded rod 4 to rotate by rotating the rotating wheel 5, the threaded rod 4 moves up and down. When the threaded rod 4 moves, the surface of the threaded rod 4 is lubricated by the contact between the oiling device 10 and the surface of the threaded rod 4, thereby preventing the threaded rod 4 from rusting and getting stuck, which is inconvenient for the user to use. During use, the oiling device 10 will cause wear due to the contact with the surface of the threaded rod 4. When the oiling device 10 is worn to the point where it cannot be used normally, the first limit block 17 is moved upward to drive the limit rod 16 to disengage from the inner diameter of the limit hole 14, and the movable block 13 is pulled out from the front end of the valve body 1, so that the first slider 9 can be smoothly disengaged from the first slide groove 8, so as to facilitate the oiling device 10. Replacement, when the replaced oiling device 10 is placed on the top of the inner diameter of the first slide groove 8 through the sliding connection between the first slider 9 and the first slide groove 8, the movable block 13 is inserted to the rear end so that the movable block 13 is plugged into the inner diameter of the slot 12, thereby fixing the position of the oiling device 10, and at the same time, the first limit block 17 is moved downward to drive the limit rod 16 to be inserted into the inner diameter of the limit hole 14, thereby fixing the position of the movable block 13, so as to facilitate the subsequent use of the oiling device 10. When the limit rod 16 is inserted into the inner diameter of the limit hole 14, the tension generated by the first spring 18 generates a downward pulling force on the first limit block 17, thereby limiting the first limit block 17 to prevent the first limit block 17 from driving the limit rod 16 to fall off the inner diameter of the limit hole 14.

[0028] Finally, it should be noted that the above is only 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 can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum stop valve, comprising a valve body (1), characterized in that: A valve cover (2) is installed on the top of the valve body (1), and a mounting frame (3) is fixedly connected to the top of the valve cover (2). The inner diameter of the mounting frame (3) is rotatably connected to a threaded rod (4), and the top of the threaded rod (4) is fixedly connected to a rotating wheel (5). Both sides of the middle of the front end of the mounting frame (3) are fixedly connected to a first boss (6), and both sides of the top of the front end of the mounting frame (3) are fixedly connected to a second boss (7). A first sliding groove (8) is provided at the bottom of the first boss (6), and a first sliding block (9) is slidably connected to the inner diameter of the first sliding groove (8). An oiling device (10) is fixedly connected to the opposite surface of the first sliding block (9), and the surface of the oiling device (10) is in contact with the threaded rod. The surfaces of the rod (4) are in abutment with each other, a through groove (11) is provided at the front end of the first boss (6), a slot (12) is provided at the rear end of the inner diameter of the first slide groove (8), a movable block (13) is slidably connected to the inner diameter of the through groove (11), the surface of the movable block (13) is plugged into the inner diameter of the slot (12), a limiting hole (14) is provided on the surface of the movable block (13), a first protrusion (15) is fixedly connected to the front end of the first boss (6), the inner diameter of the first protrusion (15) is slidably connected to the limiting rod (16), the surface of the limiting rod (16) is plugged into the inner diameter of the limiting hole (14), and the top of the limiting rod (16) is fixedly connected to the first limiting block (17).

2. The vacuum stop valve according to claim 1, characterized in that: A first spring (18) is fixedly connected to the top of the first protrusion (15), the top of the first spring (18) is fixedly connected to the bottom of the first limiting block (17), and the inner diameter of the first spring (18) is slidably connected to the surface of the limiting rod (16).

3. The vacuum stop valve according to claim 1, characterized in that: One end of the first sliding block (9) away from the oiling device (10) is fixedly connected to a limiting plate (19), and the limiting plate (19) is adapted to the first sliding groove (8).

4. The vacuum stop valve according to claim 1, characterized in that: The facing surface of the second boss (7) is fixedly connected to an oil box (20), the bottom of the oil box (20) is fixedly connected to an oil outlet (21), the top of the oiling device (10) is fixedly connected to a first oil inlet (22), the inner diameter of the first oil inlet (22) is plugged into the surface of the oil outlet (21), both sides of the bottom of the oil box (20) are fixedly connected to convex plates (23), the surface of the oil outlet (21) is provided with a slot (24), the inner diameter of the slot (24) is slidably connected to a limiting plate (25), and the front end of the oil box (20) is fixedly connected to a second convex block (26). The bottom of the second protrusion (26) is fixedly connected to a second spring (27), the bottom of the second spring (27) is fixedly connected to a limiting ring (28), the top of the limiting plate (25) is fixedly connected to a fixing column (29), the number of the fixing columns (29) is several, the surface of the fixing column (29) is plugged into the inner diameter of the limiting ring (28), the surface of the protruding plate (23) is provided with a second sliding groove (30), both sides of the limiting plate (25) are fixedly connected to second sliders (31), the surface of the second slider (31) is slidably connected to the inner diameter of the second sliding groove (30).

5. The vacuum shut-off valve according to claim 4, characterized in that: The tops of both sides of the limiting ring (28) are fixedly connected with sliding rods (32), the tops of the sliding rods (32) are fixedly connected with connecting plates (33), sliding holes (34) are provided on both sides of the top of the second protrusion (26), and the surface of the sliding rod (32) is slidably connected to the inner diameter of the sliding hole (34).

6. The vacuum stop valve according to claim 4, characterized in that: A second oil inlet (35) is fixedly connected to the top of the oil box (20), and an oil inlet cover (36) is threadedly connected to the surface of the second oil inlet (35).

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