A single-flap valve disc for large valves

Abstract

The utility model discloses a single-flap valve disc for large valves, which relates to the technical field of single-flap valves, including a valve body, connecting flanges are provided at both ends of the valve body, a positioning ring is provided inside the valve body, and a fixing bolt is provided in the middle of the positioning ring, a valve core assembly is provided inside the positioning ring, and the valve core assembly includes a valve core, a connecting assembly is provided in the middle of the valve core, a mounting groove is provided on the side of the valve core, and a rotating rod is provided inside the mounting groove, a rotating ear plate is provided outside the rotating rod, and a valve disc is provided at the bottom of the rotating ear plate, and a sealing ring is provided on the side of the valve disc. The utility model inserts the sealing ring provided in the sealing groove, thereby improving the sealing effect of the valve disc and the valve core, reducing the gap at the connection between the valve disc and the valve core, preventing the fluid from leaking through the connection between the valve disc and the valve core when the fluid flows in reverse, affecting the non-return effect of the valve body, and improving the practicality of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of single-flap valves, in particular to a single-flap valve disc for large valves. Background Art

[0002] A single-flap check valve is usually composed of a single flap, which is fixed on the valve cover. The valve is opened and closed by the rotation of the flap. When the fluid flows in the forward direction, the flap rotates upward to open the valve, and the fluid can pass freely; when the fluid flows in the reverse direction, the flap is subjected to the reaction force of the fluid and rotates downward to close the valve to prevent the fluid from flowing back. The advantages of a single-flap check valve are simple structure and easy maintenance. It is suitable for low flow rate and high pressure pipeline systems.

[0003] However, the sealing effect of the single-flap valve is not ideal during use, which causes the fluid to leak through the connection between the valve flap and the valve body when it flows in the reverse direction, affecting the check effect of the single-flap valve. Therefore, it is necessary to provide a single-flap valve flap for large valves to solve the problem. Utility Model Content

[0004] The main purpose of the utility model is to provide a single-flap valve disc for a large valve, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A single-flap valve disc for a large valve comprises a valve body, connecting flanges are arranged at both ends of the valve body, a positioning ring is arranged inside the valve body, a fixing bolt is arranged in the middle of the positioning ring, and a valve core assembly is arranged inside the positioning ring;

[0007] The valve core assembly comprises a valve core, a connecting assembly is arranged in the middle of the valve core, a mounting groove is arranged on the side of the valve core, a rotating rod is arranged inside the mounting groove, a rotating ear plate is arranged outside the rotating rod, a valve disc is arranged at the bottom of the rotating ear plate, and a sealing ring is arranged on the side of the valve disc;

[0008] The connecting component includes a mounting vertical plate, a triangular support frame is arranged on the side of the mounting vertical plate, and a hinge seat is arranged at the bottom of the mounting vertical plate, a rotating shaft is arranged in the middle of the hinge seat, and a docking seat is arranged outside the rotating shaft, and a connecting spring is arranged on the side of the docking seat.

[0009] Preferably, the side of the valve core is connected to the positioning ring by a fixing bolt, and the valve core is tightly fitted to the positioning ring, a flow port is opened in the middle of the valve core, and the flow port runs through the valve core, the installation groove is opened at the top of the side of the valve core away from the positioning ring, a groove is opened in the middle of the side of the valve core away from the positioning ring, and the installation groove and the groove are connected to each other.

[0010] Preferably, the middle of the mounting groove is connected to the rotating rod by a bolt, and the rotating rod and the rotating ear plate are sleeved together, the rotating ear plate is rotatably connected to the inside of the mounting groove by the rotating rod, and the bottom end of the rotating ear plate is connected to the inside of the groove, the rotating ear plate is fixedly connected to the valve flap, and the valve flap is located in the middle of the groove.

[0011] Preferably, the groove is fixedly connected to the sealing ring, and the sealing ring is clamped on a side of the valve disc close to the groove. A sealing groove is opened on the side of the valve disc, and the sealing ring is inserted into the inside of the sealing groove.

[0012] Preferably, the top of the mounting vertical plate is fixedly connected to the top inner wall of the valve core, and the mounting vertical plate is fixedly connected to a triangular support frame, there are two triangular support frames, which are symmetrically distributed on both sides of the mounting vertical plate, and the triangular support frame is located at one end of the mounting vertical plate close to the top of the valve core, the mounting vertical plate is connected to the hinged seat by bolts, and the hinged seat is located at the bottom of one side of the mounting vertical plate close to the valve disc.

[0013] Preferably, there are two articulated seats, which are respectively connected to the side of the mounting vertical plate and the side of the valve disc by bolts, and the two articulated seats are arranged opposite to each other between the mounting vertical plate and the valve disc, the articulated seat is rotatably connected to the rotating shaft, and the articulated seat is connected to the docking seat through the rotating shaft, the middle of the side of the docking seat away from the articulated seat is fixedly connected to the connecting spring, and the connecting spring connects the two docking seats.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The sealing ring is inserted into the sealing groove to improve the sealing effect between the valve disc and the valve core, reduce the gap between the valve disc and the valve core, prevent the fluid from leaking through the connection between the valve disc and the valve core when the fluid flows in the reverse direction, and affect the check effect of the valve body, thereby improving the practicality of the device;

[0016] 2. The valve disc is connected to the connecting spring through the provided mounting vertical plate, so that the valve disc can be quickly closed after the pressure is lost, and the valve disc is connected to the mounting vertical plate through the provided connecting spring to improve the stability of the valve disc and prevent the valve disc from shaking during the check process, thereby affecting the check stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model device;

[0018] Figure 2 It is a schematic diagram of the structure inside the device of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the valve core assembly of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the cross section of the valve core of the utility model;

[0021] Figure 5 This utility model Figure 4 Schematic diagram of the structure enlarged at point A in the middle.

[0022] In the figure: 1. valve body; 2. connecting flange; 3. positioning ring; 4. fixing bolt; 5. valve core; 6. flow port; 7. mounting groove; 8. rotating rod; 9. rotating ear plate; 10. valve disc; 11. groove; 12. sealing ring; 13. sealing groove; 14. valve core assembly; 15. connecting assembly; 16. mounting vertical plate; 17. triangular support frame; 18. hinged seat; 19. rotating shaft; 20. docking seat; 21. connecting spring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] See also Figure 1-Figure 5 As shown, a single-flap valve disc for a large valve comprises a valve body 1, connecting flanges 2 are arranged at both ends of the valve body 1, a positioning ring 3 is arranged inside the valve body 1, a fixing bolt 4 is arranged in the middle of the positioning ring 3, and a valve core assembly 14 is arranged inside the positioning ring 3;

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the valve core assembly 14 includes a valve core 5, a connecting assembly 15 is arranged in the middle of the valve core 5, a mounting groove 7 is arranged on the side of the valve core 5, and a rotating rod 8 is arranged inside the mounting groove 7, a rotating ear plate 9 is arranged outside the rotating rod 8, and a valve flap 10 is arranged at the bottom of the rotating ear plate 9, and a sealing ring 12 is arranged on the side of the valve flap 10, the side of the valve core 5 is connected to the positioning ring 3 by a fixing bolt 4, and the valve core 5 and the positioning ring 3 are tightly fitted, a flow port 6 is opened in the middle of the valve core 5, and the flow port 6 runs through the valve core 5, the mounting groove 7 is opened at the top of the side of the valve core 5 away from the positioning ring 3, a groove 11 is opened in the middle of the side of the valve core 5 away from the positioning ring 3, and the mounting groove 7 and the groove 11 are communicated with each other, the middle of the mounting groove 7 is connected to the rotating rod 8 by a bolt, and the rotating rod 8 and the rotating ear plate 9 are sleeved together, the rotating ear plate 9 is rotatably connected to the inside of the installation groove 7 through the rotating rod 8, and the bottom end of the rotating ear plate 9 is connected to the inside of the groove 11, the rotating ear plate 9 is fixedly connected to the valve disc 10, and the valve disc 10 is located in the middle of the groove 11, the groove 11 is fixedly connected to the sealing ring 12, and the sealing ring 12 is clamped on the side of the valve disc 10 close to the groove 11, and a sealing groove 13 is opened on the side of the valve disc 10, and the sealing ring 12 is inserted into the inside of the sealing groove 13. The sealing ring 12 is inserted into the inside of the sealing groove 13, thereby improving the sealing effect of the valve disc 10 and the valve core 5, reducing the gap at the connection between the valve disc 10 and the valve core 5, preventing the fluid from seeping through the connection between the valve disc 10 and the valve core 5 when the reverse flow occurs, affecting the non-return effect of the valve body, and improving the practicality of the device;

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the connecting assembly 15 includes a mounting vertical plate 16, a triangular support frame 17 is arranged on the side of the mounting vertical plate 16, and a hinge seat 18 is arranged at the bottom of the mounting vertical plate 16, a rotating shaft 19 is arranged in the middle of the hinge seat 18, and a docking seat 20 is arranged outside the rotating shaft 19, and a connecting spring 21 is arranged on the side of the docking seat 20, the top of the mounting vertical plate 16 is fixedly connected to the top inner wall of the valve core 5, and the mounting vertical plate 16 is fixedly connected to the triangular support frame 17, there are two triangular support frames 17, which are symmetrically distributed on both sides of the mounting vertical plate 16, and the triangular support frame 17 is located at one end of the mounting vertical plate 16 close to the top of the valve core 5, the mounting vertical plate 16 is connected to the hinge seat 18 by bolts, and the hinge seat 18 is located at the bottom of one side of the mounting vertical plate 16 close to the valve disc 10, and the hinge There are two connecting seats 18, which are respectively connected to the side of the mounting vertical plate 16 and the side of the valve disc 10 by bolts, and the two hinged seats 18 are arranged relatively between the mounting vertical plate 16 and the valve disc 10, the hinged seat 18 is rotatably connected to the rotating shaft 19, and the hinged seat 18 is connected to the docking seat 20 through the rotating shaft 19, and the middle of the side of the docking seat 20 away from the hinged seat 18 is fixedly connected to the connecting spring 21, and the connecting spring 21 connects the two docking seats 20, and is connected to the valve disc 10 through the arranged mounting vertical plate 16 and the connecting spring 21, so that the valve disc 10 can be quickly closed after losing pressure, and the valve disc 10 is connected to the mounting vertical plate 16 through the arranged connecting spring 21, so as to improve the stability of the valve disc 10 and prevent the valve disc 10 from shaking during the check process, thereby affecting the check stability.

[0027] It should be noted that the utility model is a single-flap valve for large valves. When the fluid passes through the flow port 6 in the middle of the valve core 5, the valve disc 10 on the side of the valve core 5 is squeezed. Under the squeezing force, the valve disc 10 follows the rotating ear plate 9 to rotate along the rotating rod 8 inside the installation groove 7, so that the valve disc 10 is separated from the groove 11 to form an outlet. At the same time, the valve disc 10 pulls the connecting spring 21 to stretch, and the two ends of the connecting spring 21 are respectively connected to the hinge seat 18 through the docking seat 20 and the rotating shaft 19, so that the connecting spring 21 follows the angle of the valve disc 10 to stretch and adjust, preventing If jamming occurs and usage is affected, when transmission is stopped, the force applied to the valve flap 10 is reduced, and the connecting spring 21 drives the valve flap 10 to retract, so that the valve flap 10 and the rotating ear plate 9 rotate in opposite directions along the rotating rod 8. The sealing groove 13 on the side of the valve flap 10 is clamped on the outside of the sealing ring 12 on the side of the groove 11 close to the valve flap 10, thereby improving the sealing effect between the valve flap 10 and the valve core 5. The closing efficiency of the valve flap 10 is improved by setting the connecting spring 21, and the non-return efficiency of the device is increased, and the sealing ring 12 is used in conjunction with the connecting spring 21 to prevent the valve flap 10 from being displaced during use and affecting usage.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A single-flap valve disc for a large valve, comprising a valve body (1), characterized in that: Connecting flanges (2) are provided at both ends of the valve body (1), a positioning ring (3) is provided inside the valve body (1), a fixing bolt (4) is provided in the middle of the positioning ring (3), and a valve core assembly (14) is provided inside the positioning ring (3); The valve core assembly (14) comprises a valve core (5), a connecting assembly (15) is arranged in the middle of the valve core (5), a mounting groove (7) is arranged on the side of the valve core (5), a rotating rod (8) is arranged inside the mounting groove (7), a rotating ear plate (9) is arranged outside the rotating rod (8), a valve flap (10) is arranged at the bottom of the rotating ear plate (9), and a sealing ring (12) is arranged on the side of the valve flap (10); The connection assembly (15) comprises a mounting vertical plate (16), a triangular support frame (17) is arranged on the side of the mounting vertical plate (16), and a hinge seat (18) is arranged at the bottom of the mounting vertical plate (16), a rotating shaft (19) is arranged in the middle of the hinge seat (18), and a docking seat (20) is arranged outside the rotating shaft (19), and a connecting spring (21) is arranged on the side of the docking seat (20).

2. The single-flap valve disc for a large valve according to claim 1, characterized in that: The side of the valve core (5) is connected to the positioning ring (3) via a fixing bolt (4), and the valve core (5) and the positioning ring (3) are tightly fitted. A flow port (6) is provided in the middle of the valve core (5), and the flow port (6) passes through the valve core (5). The installation groove (7) is provided at the top of a side of the valve core (5) away from the positioning ring (3). A groove (11) is provided in the middle of a side of the valve core (5) away from the positioning ring (3), and the installation groove (7) and the groove (11) are communicated with each other.

3. The single-flap valve disc for a large valve according to claim 2, characterized in that: The middle of the mounting groove (7) is connected to the rotating rod (8) by means of bolts, and the rotating rod (8) and the rotating ear plate (9) are sleeved together; the rotating ear plate (9) is rotatably connected to the inside of the mounting groove (7) by means of the rotating rod (8), and the bottom end of the rotating ear plate (9) is connected to the inside of the groove (11); the rotating ear plate (9) is fixedly connected to the valve flap (10), and the valve flap (10) is located in the middle of the groove (11).

4. The single-flap valve disc for a large valve according to claim 3, characterized in that: The groove (11) is fixedly connected to the sealing ring (12), and the sealing ring (12) is clamped on a side of the valve flap (10) close to the groove (11). A sealing groove (13) is provided on the side of the valve flap (10), and the sealing ring (12) is inserted into the inside of the sealing groove (13).

5. The single-flap valve disc for a large valve according to claim 1, characterized in that: The top of the mounting vertical plate (16) is fixedly connected to the top inner wall of the valve core (5), and the mounting vertical plate (16) is fixedly connected to the triangular support frame (17). There are two triangular support frames (17), which are symmetrically distributed on both sides of the mounting vertical plate (16), and the triangular support frame (17) is located at one end of the mounting vertical plate (16) close to the top of the valve core (5). The mounting vertical plate (16) is connected to the hinge seat (18) by bolts, and the hinge seat (18) is located at the bottom of one side of the mounting vertical plate (16) close to the valve disc (10).

6. The single-flap valve disc for a large valve according to claim 5, characterized in that: There are two hinged seats (18), which are respectively connected to the side of the mounting vertical plate (16) and the side of the valve disc (10) by bolts, and the two hinged seats (18) are arranged opposite to each other between the mounting vertical plate (16) and the valve disc (10). The hinged seat (18) is rotatably connected to the rotating shaft (19), and the hinged seat (18) is connected to the docking seat (20) through the rotating shaft (19). The middle of the side of the docking seat (20) away from the hinged seat (18) is fixedly connected to the connecting spring (21), and the connecting spring (21) connects the two docking seats (20).

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