Dynamic bearing type plug valve

Abstract

The utility model relates to the technical field of valves, in particular to a dynamic bearing type plug valve which comprises a valve shell and a bearing structure. By means of the locking structure, when the cock needs to be closed, a first rotating rod drives a straight gear to rotate by rotating a rotating handle, meanwhile, due to the fact that the outer surface of the straight gear is meshed with the outer surface of a tooth plate, the straight gear can drive the tooth plate to slide in a sliding rail when rotating, and when the straight gear rotates by 90 degrees, the straight gear can rotate by 90 degrees. When locking of the clamping groove needs to be canceled, a tooth plate drives a clamping rod to be just clamped in the clamping groove, at the moment, the plug cock is not communicated with the lining, the two sides of a straight gear are clamped, and a first rotating rod cannot rotate, so that it can be guaranteed that the plug cock is not opened by mistake due to other factors, and when locking of the clamping groove needs to be canceled, a turning cover is opened, and a rotating handle is rotated; when the plug valve is opened, the connecting plate can drive the clamping rod to rotate upwards by 90 degrees, at the moment, the straight gear can rotate, the plug cock can be communicated with the lining, and therefore the purposes that the device can lock the rotary handle of the plug valve and prevent mistaken opening are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a dynamic load-bearing plug valve. Background Art

[0002] The plug valve is a rotary valve in the shape of a closing piece or a plunger. It is a valve that can be opened or closed by rotating 90 degrees to connect or separate the channel opening on the valve plug with the channel opening on the valve body. The shape of its valve plug can be cylindrical or conical. In a cylindrical valve plug, the channel is generally rectangular; in a conical valve plug, the channel is trapezoidal. These shapes make the structure of the plug valve light. It is most suitable for cutting off and connecting media and for diversion, but it can sometimes be used for throttling depending on the applicable properties and the erosion resistance of the sealing surface.

[0003] The existing plug valves used in seawater desalination and sewage treatment in the nuclear power field lack a handle locking structure, which results in the handle being accidentally opened or other factors causing the plug valve to be opened by mistake when the plug valve is not in use, thereby affecting normal sewage discharge and sewage treatment. Based on the existing technical deficiencies, the utility model designs a dynamic load-bearing plug valve. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a dynamic load-bearing plug valve, which has the advantage of being able to lock the plug valve handle to prevent accidental opening.

[0005] The utility model provides the following technical solutions: a dynamic load-bearing plug valve, comprising a valve housing and a load-bearing structure, the load-bearing structure comprising a second connecting disk, a load-bearing disk welded inside the second connecting disk, a locking structure installed on the top of the load-bearing disk, the locking structure comprising a card frame, a first rotating rod is rotatably installed inside the card frame, the first rotating rod passes through the load-bearing disk and a plug is installed at one end of the bottom, a spur gear is installed on the outer surface of the first rotating rod, a card groove is provided on the outer surface of the spur gear, two supporting columns are installed at the bottom of the inner cavity of the card frame, a sliding track is installed on the top of the two supporting columns, a toothed plate is slidably installed inside the sliding track, the outer surface of the toothed plate is meshed with the outer surface of the spur gear, a cross bar is installed at one end of the toothed plate, a second rotating rod is rotatably installed inside the cross bar, a connecting plate is installed on the outer surface of the second rotating rod, a card rod is installed on one side of the connecting plate, and the second rotating rod passes through a rotating handle at one end of the cross bar.

[0006] As a preferred technical solution of the utility model, a sealing groove is provided at the bottom of the second connecting plate, a flip cover is hingedly installed on the top of the outer surface of the card frame, and a rotating handle is installed on the top of the first rotating rod.

[0007] As a preferred technical solution of the utility model, a first connecting disk is installed on the top of the valve housing, and a sealing ring is installed on the top of the first connecting disk.

[0008] As a preferred technical solution of the utility model, a bushing is arranged inside the valve housing, and a water outlet is opened inside the valve housing.

[0009] As a preferred technical solution of the utility model, connecting flanges are arranged on both sides of the outer surface of the valve housing, and the two connecting flanges are connected to the water outlet.

[0010] As a preferred technical solution of the utility model, the two water outlets are connected to the bushing.

[0011] As a preferred technical solution of the utility model, the plug is communicated with the bushing.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. This kind of dynamic load-bearing plug valve has a locking structure. In the initial state, when the plug is connected to the bushing, the clamping rod is not stuck in the clamping groove. When the plug needs to be closed, the first rotating rod drives the spur gear to rotate by turning the rotating handle. At the same time, since the outer surface of the spur gear and the outer surface of the tooth plate are meshed with each other, the spur gear can also drive the tooth plate to slide inside the sliding track when it rotates. When the spur gear rotates 90°, the tooth plate drives the clamping rod to be stuck in the clamping groove. At this time, the plug is not connected to the bushing. At this time, the two sides of the spur gear are stuck, and the first rotating rod cannot rotate. This ensures that the plug is not accidentally opened by other factors. When the slot needs to be unlocked, the flip cover is opened and the rotating handle is turned to make the connecting plate drive the clamping rod to rotate 90° upwards. At this time, the spur gear can rotate, and the plug can be connected to the bushing, thereby achieving the purpose of the device being able to lock the plug valve handle to prevent accidental opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the bushing structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the rotating rod of the utility model;

[0017] Figure 4 This is a schematic diagram of the tooth plate structure of the utility model;

[0018] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. valve housing; 2. first connecting plate; 21. sealing ring; 22. bushing; 23. water outlet; 3. bearing structure; 31. second connecting plate; 32. sealing groove; 33. bearing plate; 4. locking structure; 41. clamping frame; 42. flip cover; 43. rotating rod; 44. rotating handle; 45. plug; 46. spur gear; 47. clamping groove; 48. supporting column; 49. sliding track; 410. tooth plate; 411. cross bar; 412. rotating rod; 413. connecting plate; 414. clamping rod; 415. rotating handle; 5. connecting flange. DETAILED DESCRIPTION

[0020] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 A dynamic load-bearing plug valve comprises a valve housing 1 and a bearing structure 3, wherein the bearing structure 3 comprises a second connecting plate 31, a bearing plate 33 is welded inside the second connecting plate 31, a locking structure 4 is installed on the top of the bearing plate 33, and the locking structure 4 comprises a card frame 41, a first rotating rod 43 is rotatably installed inside the card frame 41, the first rotating rod 43 penetrates the bearing plate 33 and a plug 45 is installed at one end of the bottom, a spur gear 46 is installed on the outer surface of the first rotating rod 43, a card groove 47 is opened on the outer surface of the spur gear 46, and a card frame 41 is installed at the bottom of the inner cavity Two support columns 48 are installed, and sliding rails 49 are installed on the top of the two support columns 48. A toothed plate 410 is slidably installed inside the sliding rail 49. The outer surface of the toothed plate 410 is meshed with the outer surface of the spur gear 46. A cross bar 411 is installed at one end of the toothed plate 410. A second rotating rod 412 is rotatably installed inside the cross bar 411. A connecting plate 413 is installed on the outer surface of the second rotating rod 412. A clamping rod 414 is installed on one side of the connecting plate 413. The second rotating rod 412 passes through the cross bar 411 and is installed with a rotating handle 415 at one end.

[0022] See also Figure 3 A sealing groove 32 is provided at the bottom of the second connecting plate 31 , a flip cover 42 is hingedly installed on the top of the outer surface of the card frame 41 , and a rotating handle 44 is installed on the top of the first rotating rod 43 .

[0023] By opening the flip cover 42 and rotating the handle 415 , the connecting plate 413 can drive the clamping rod 414 to rotate upward by 90°.

[0024] See also Figure 1-3 A first connection plate 2 is installed on the top of the valve housing 1, and a sealing ring 21 is installed on the top of the first connection plate 2. A bushing 22 is arranged inside the valve housing 1, and a water outlet 23 is provided inside the valve housing 1. Connecting flanges 5 are arranged on both sides of the outer surface of the valve housing 1, and the two connecting flanges 5 are connected to the water outlet 23. The two water outlets 23 are connected to the bushing 22. The plug 45 is connected to the bushing 22.

[0025] The sealing performance of the device can be improved by inserting the sealing ring 21 into the sealing groove 32. Through the communication between the bushing 22 and the water port 23, when the cock 45 is rotated, the water port 23, the bushing 22 and the cock 45 are communicated, thereby allowing sewage to pass.

[0026] Working principle: when a dynamic load-bearing plug valve is used, in the initial state, first, the sealing groove 32 is inserted into the sealing ring 21 by bolts to fix it. At this time, the device is installed. When water flows normally, the clamping rod 414 is not stuck in the clamping groove 47. When the plug 45 needs to be closed, the first rotating rod 43 drives the spur gear 46 to rotate by rotating the rotating handle 44. At the same time, since the outer surface of the spur gear 46 is meshed with the outer surface of the tooth plate 410, the spur gear 46 can also drive the tooth plate 410 to slide inside the sliding track 49 when it rotates. When the locking groove 46 is rotated 90°, the tooth plate 410 drives the locking rod 414 to be stuck in the locking groove 47. At this time, the plug 45 is not connected with the bushing 22. At this time, the two sides of the spur gear 46 are stuck, and the first rotating rod 43 cannot rotate, thereby ensuring that the plug 45 is not opened by mistake due to other factors. When the locking groove 47 needs to be unlocked, the flip cover 42 is opened, and the rotating handle 415 is rotated to make the connecting plate 413 drive the locking rod 414 to rotate upward 90°. At this time, the spur gear 46 can be rotated to connect the plug 45 with the bushing 22.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dynamically loaded plug valve, comprising a valve housing (1) and a load-bearing structure (3), characterized in that: The bearing structure (3) comprises a second connection disk (31), a bearing disk (33) is welded inside the second connection disk (31), a locking structure (4) is installed on the top of the bearing disk (33), the locking structure (4) comprises a clamping frame (41), a first rotating rod (43) is rotatably installed inside the clamping frame (41), the first rotating rod (43) passes through the bearing disk (33) and a plug (45) is installed at one end of the bottom, a spur gear (46) is installed on the outer surface of the first rotating rod (43), a clamping groove (47) is provided on the outer surface of the spur gear (46), and two support columns (48) are installed at the bottom of the inner cavity of the clamping frame (41). A sliding track (49) is installed on the top of the two support columns (48), a toothed plate (410) is slidably installed inside the sliding track (49), the outer surface of the toothed plate (410) is meshed with the outer surface of the spur gear (46), a cross bar (411) is installed at one end of the toothed plate (410), a second rotating rod (412) is rotatably installed inside the cross bar (411), a connecting plate (413) is installed on the outer surface of the second rotating rod (412), a clamping rod (414) is installed on one side of the connecting plate (413), and a rotating handle (415) is installed at one end of the second rotating rod (412) that passes through the cross bar (411).

2. A dynamically loaded plug valve according to claim 1, characterized in that: A sealing groove (32) is provided at the bottom of the second connection plate (31), a flip cover (42) is hingedly mounted on the top of the outer surface of the card frame (41), and a rotating handle (44) is mounted on the top of the first rotating rod (43).

3. A dynamically loaded plug valve according to claim 1, characterized in that: A first connection disk (2) is installed on the top of the valve housing (1), and a sealing ring (21) is installed on the top of the first connection disk (2).

4. A dynamically loaded plug valve according to claim 3, characterized in that: A bushing (22) is provided inside the valve housing (1), and a water outlet (23) is provided inside the valve housing (1).

5. A dynamically loaded plug valve according to claim 3, characterized in that: Connecting flanges (5) are provided on both sides of the outer surface of the valve housing (1), and the two connecting flanges (5) are in communication with the water outlet (23).

6. A dynamically loaded plug valve according to claim 4, characterized in that: The two water outlets (23) are in communication with the bushing (22).

7. A dynamically loaded plug valve according to claim 2, characterized in that: The cock (45) is in communication with the bushing (22).

Images