Valve structure with pressure relief function

Abstract

The utility model discloses a valve structure with a pressure relief function, and relates to the technical field of valves. The valve structure with the pressure relief function comprises a valve body, a valve port formed in the valve body, a valve plate arranged in the valve port in a turnover mode and used for opening and closing the valve port and a driving assembly used for driving the valve plate to turn over, a pressure relief part is arranged on one side of the valve plate and is in a hemispherical shape, and the diameter of the pressure relief part is smaller than the length of the valve port. When the valve structure is applied to the discharging port of the material tank, the hemispherical pressure relief part can disperse the flowing pressure of powder or liquid in the material tank, the opening torque of the valve plate is reduced, and opening of the valve plate is facilitated; when the valve structure is applied to the liquid outlet of the pipeline, the hemispherical pressure relief part can disperse impact force of a water head or a water hammer, and deformation and damage of the valve plate are avoided.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a valve structure with a pressure relief function. Background Art

[0002] The valve is a control component in the fluid conveying system, which has the functions of shutting off, regulating, guiding, preventing backflow, stabilizing pressure, diverting or overflowing pressure relief, etc. Corresponding valves are set at the material outlet of the tank and the liquid outlet of the pipeline to control the opening and closing of the material outlet and the liquid outlet.

[0003] In the prior art, a flat valve plate is usually set at the material outlet of the material tank, and a concave valve body is usually set at the liquid outlet of the pipeline. However, in actual use, both the flat valve plate and the concave valve body have their own defects: on the one hand, for the material tank, since it is filled with powder or liquid, the powder or liquid will generate a large pressure when flowing downward. These pressures applied to the flat valve plate will increase the opening torque of the flat valve plate, making it difficult for the flat valve plate to open smoothly; on the other hand, for the pipeline, when it is a horizontal pipeline, the use of a concave valve body will cause a large amount of liquid to remain in the dead corner of the valve body, affecting the flow of the liquid; at the same time, the liquid will generate water head or water hammer during the continuous flow process, and the water head or water hammer will continuously impact the concave valve body, causing the valve core of the concave valve body to deform and be damaged under the continuous impact. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the present application provides a valve structure with a pressure relief function.

[0005] The present application provides a valve structure with a pressure relief function using the following technical solution:

[0006] A valve structure with a pressure relief function comprises a valve body, a valve port opened on the valve body, a reversible valve plate arranged in the valve port for opening and closing the valve port, and a driving component for driving the valve plate to flip, wherein a pressure relief portion is arranged on one side of the valve plate, the pressure relief portion is hemispherical, and the diameter of the pressure relief portion is smaller than the length of the valve port.

[0007] By adopting the above-mentioned technical scheme, when the valve structure of the present application is applied to the discharge port of a material tank, the hemispherical pressure relief portion can disperse the flow pressure of the powder or liquid in the material tank, reduce the opening torque of the valve plate, and facilitate the opening of the valve plate; and when the valve structure of the present application is applied to the liquid outlet of the pipeline, the hemispherical pressure relief portion can disperse the impact force of the water head or water hammer, and avoid deformation and damage of the valve plate.

[0008] In a specific possible implementation scheme, the valve body includes a coaxially arranged valve body and a valve bottom, the valve body and the valve bottom enclose the valve port, and the two ends of the valve plate are rotatably connected to the valve body and the valve bottom respectively.

[0009] In a specific implementation scheme, a first rotation groove is opened in the valve body along its length direction, and the driving assembly includes a transmission shaft rotatable around its own axial direction and arranged in the first rotation groove, and one end of the transmission shaft penetrates into the valve port and is connected to the valve plate.

[0010] By adopting the above technical solution, the transmission shaft can rotate relative to the valve body in the first rotation groove and drive the valve plate to rotate, thereby improving the rotation stability of the transmission shaft.

[0011] In a specific possible implementation scheme, the end of the transmission shaft away from the valve plate is a driving end, the driving end is arranged through the valve body, and the driving assembly further includes an end cover sleeved on the driving end.

[0012] By adopting the above technical solution, it is convenient for operators to operate the transmission shaft.

[0013] In a specific possible implementation scheme, a protrusion is provided on the side of the driving end, and the end of the end cover close to the valve body is a first connecting part, a connecting hole is provided on the first connecting part, a card slot is provided on the hole wall of the connecting hole, the driving end is inserted into the connecting hole, and the protrusion is accommodated in the card slot.

[0014] By adopting the above technical solution, the transmission shaft can rotate synchronously with the end cover under the cooperation of the protrusion and the groove, so that the valve plate can achieve real-time response to the rotation of the end cover, effectively improving the transmission efficiency of the transmission shaft.

[0015] In a specific feasible implementation scheme, an arc-shaped travel groove is opened on the first connecting part around the circumference of the connecting hole, and the arc center of the travel groove coincides with the center of the circle of the connecting hole. The end of the valve body close to the end cover is the second connecting part, and a limit pin is provided on the second connecting part. The limit pin is inserted in the travel groove and is slidable along the extension direction of the travel groove.

[0016] By adopting the above technical solution, the relative rotation stroke between the end cover and the valve body can be limited by the stroke groove, which effectively prevents the operator from excessively rotating the end cover and causing the valve plate to be excessively opened.

[0017] In a specific possible implementation scheme, a fixing pin is further provided on the first connecting portion, and at least two fixing grooves are opened on the second connecting portion. The at least two fixing grooves are arranged circumferentially around the driving groove, and the fixing pin is inserted into one of the fixing grooves.

[0018] By adopting the above technical solution, the operator can adjust the opening position of the valve plate by cooperating the fixing pin with different fixing grooves, thereby realizing the opening adjustment of the valve plate at different opening positions.

[0019] In a specific possible implementation, a first limiting hole is further opened on the side of the end cover, the first limiting hole is connected to the connecting hole, a first limiting bolt is threadedly connected to the first limiting hole, and an end of the first limiting bolt conflicts with the driving end.

[0020] By adopting the above technical solution, the first limiting bolt can resist the driving end, so that the driving end and the end cover are relatively locked, so that the valve plate can be kept in the locked position, avoiding the operator's misoperation of the end cover and affecting the valve plate's opening and closing control of the valve port.

[0021] In a specific possible implementation scheme, a second limiting hole is further opened on the side of the valve body, the second limiting hole is connected to the first rotation groove, a second limiting bolt is threadedly connected to the second limiting hole, and an end of the second limiting bolt conflicts with the transmission shaft.

[0022] By adopting the above technical solution, the second limiting bolt can resist the transmission shaft to prevent the transmission shaft from moving up and down.

[0023] In a specific possible implementation scheme, a push rod is arranged on the valve bottom along its length direction, and the push rod is rotatable around its own axis direction. The end of the push rod penetrates into the valve port and is connected to the valve plate.

[0024] By adopting the above technical solution, the push rod can cooperate with the transmission shaft to improve the rotation stability of the transmission shaft.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When the valve structure of the present application is applied to the discharge port of a material tank, the hemispherical pressure relief portion can disperse the flow pressure of the powder or liquid in the material tank, reduce the opening torque of the valve plate, and facilitate the opening of the valve plate;

[0027] 2. When the valve structure of the present application is applied to the liquid outlet of a pipeline, the hemispherical pressure relief portion can disperse the impact force of the water head or water hammer, thereby preventing the valve plate from being deformed and damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the valve structure of an embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the principle of the valve structure of an embodiment of the present application when it is applied to the discharge port of a material tank.

[0030] Figure 3 It is a schematic diagram of the principle when the valve structure of an embodiment of the present application is applied to the liquid outlet of a pipeline.

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the end cover of an embodiment of the present application.

[0032] Figure 5 It is a schematic diagram of the partial structure of the valve body of an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 1. Valve body; 1a. Valve body; 1a1. Second connection part; 1b. Valve bottom; 2. Valve port; 3. Valve plate; 31. Third connection part; 4. Drive assembly; 41. Transmission shaft; 411. Drive end; 42. End cover; 421. First connection part; 422. Hand-held part; 5. Pressure relief part; 6. First rotation groove; 7. Connecting hole; 8. Card groove; 9. Travel groove; 10. Limit pin; 11. Fixing pin; 12. Fixing groove; 13. First limiting hole; 14. First limiting bolt; 15. Second limiting hole; 16. Second limiting bolt; 17. Push rod; 18. Second rotation groove; 19. External hexagonal bolt. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings.

[0036] See also Figure 1-5 As shown, a valve structure with a pressure relief function is shown, including a valve body 1, a valve port 2 opened on the valve body 1, a reversible valve plate 3 arranged in the valve port 2 for opening and closing the valve port 2, and a driving component 4 for driving the valve plate 3 to flip, wherein the valve port 2 is a circular opening, the valve plate 3 is a circular plate, the length direction of the valve body 1 is perpendicular to the axial direction of the valve port 2, and the flipping direction of the valve plate 3 is the same as the length direction of the valve body 1.

[0037] Combination Figure 1 As shown, a pressure relief portion 5 is provided on one side of the valve plate 3. The pressure relief portion 5 is hemispherical, and the diameter of the pressure relief portion 5 is smaller than the diameter of the valve port 2. In this way, the pressure relief portion 5 can be prevented from interfering with the valve port 2 during the flipping process of the valve plate 3. At the same time, the hemispherical pressure relief portion 5 can also disperse the pressure of the material in the material tank and the impact force of the water hammer in the pipeline.

[0038] like Figure 2As shown, when the valve structure of the present application is applied to the discharge port of a material tank, the hemispherical pressure relief portion 5 faces the inside of the material tank, which can disperse the flow pressure of the powder or liquid in the material tank, reduce the opening torque of the valve plate 3, and facilitate the opening of the valve plate 3; Figure 3 As shown, when the valve structure of the present application is applied to the liquid outlet of a pipeline, the hemispherical pressure relief portion 5 faces the inside of the pipeline, which can disperse the impact force of the water head or water hammer and prevent the valve plate 3 from being deformed and damaged.

[0039] In this embodiment, if Figure 1 As shown, the valve body 1 includes a coaxially arranged valve body 1a and a valve bottom 1b, the valve body 1a and the valve bottom 1b enclose a valve port 2, and the two ends of the valve plate 3 are rotatably connected to the valve body 1a and the valve bottom 1b respectively.

[0040] A first rotation groove 6 is provided in the valve body 1a along its length direction, and the driving assembly 4 includes a transmission shaft 41 rotatable around its own axis and arranged in the first rotation groove 6, one end of the transmission shaft 41 penetrates into the valve port 2 and is connected to the valve plate 3, and the end of the transmission shaft 41 away from the valve plate 3 is a driving end 411, and the driving end 411 is arranged outside the valve body 1a, and the driving assembly 4 also includes an end cover 42 sleeved on the driving end 411. The end cover 42 is a cylinder, and a square hand-held portion 422 is also provided on the side of the end cover 42, so that the operator can hold and rotate the end cover 42.

[0041] The operator can rotate the transmission shaft 41 through the end cover 42 , and the transmission shaft 41 can rotate relative to the valve body 1 a in the first rotation groove 6 and drive the valve plate 3 to rotate, thereby realizing the control of the opening and closing of the valve port 2 .

[0042] In this embodiment, combined with Figure 4 As shown, a protrusion (not shown in the figure) is arranged on the side of the driving end 411, and one end of the end cover 42 close to the valve body 1a is a first connecting portion 421, a connecting hole 7 is provided on the first connecting portion 421, a slot 8 is provided on the hole wall of the connecting hole 7, the driving end 411 is inserted into the connecting hole 7, and the protrusion is accommodated in the slot 8. The transmission shaft 41 can rotate synchronously with the end cover 42 under the cooperation of the protrusion and the slot 8, so that the valve plate 3 can achieve real-time response to the rotation of the end cover 42, and effectively improve the transmission efficiency of the transmission shaft 41.

[0043] In this embodiment, if Figure 4-5 As shown, an arc-shaped stroke groove 9 is opened on the first connecting portion 421 around the circumference of the connecting hole 7, and the arc center of the stroke groove 9 coincides with the center of the circle of the connecting hole 7. The end of the valve body 1a close to the end cover 42 is the second connecting portion 1a1, and a limit pin 10 is arranged on the second connecting portion 1a1. The limit pin 10 is inserted in the stroke groove 9 and can be slidably arranged along the extension direction of the stroke groove 9.

[0044] When the operator rotates the end cover 42, the end cover 42 and the valve body 1 will rotate relative to each other, and the travel groove 9 will slide relative to the limit pin 10 driven by the end cover 42. When the limit pin 10 reaches the tail end of the travel groove 9, the end cover 42 can no longer rotate. In this way, the relative rotation stroke between the end cover 42 and the valve body 1 can be limited by the travel groove 9, which effectively avoids the operator from excessively rotating the end cover 42 and causing the valve plate 3 to be excessively opened.

[0045] In this embodiment, if Figure 4-5 As shown, a fixing pin 11 is further provided on the first connection portion 421, and two fixing grooves 12 are provided on the second connection portion 1a1. The two fixing grooves 12 are arranged circumferentially around the first rotating groove 6, and the fixing pin 11 is inserted into one of the fixing grooves 12. When the fixing pin 11 is inserted into different fixing grooves 12, the opening position of the valve plate 3 will also change, and the change in the opening position will affect the opening degree of the valve plate 3. In this way, the operator can adjust the opening position of the valve plate 3 by matching the fixing pin 11 with different fixing grooves 12, thereby realizing the opening degree adjustment of the valve plate 3 at different opening positions.

[0046] In this embodiment, combined with Figure 4 As shown, a first limiting hole 13 is further provided on the side of the end cover 42, the first limiting hole 13 is communicated with the connecting hole 7, a first limiting bolt 14 is threadedly connected to the first limiting hole 13, and the end of the first limiting bolt 14 conflicts with the driving end 411. The first limiting bolt 14 can abut against the driving end 411, so that the driving end 411 and the end cover 42 are relatively locked, so that the valve plate 3 can be kept in the locked position, avoiding the operator's misoperation of the end cover 42 and affecting the opening and closing control of the valve plate 3 on the valve port 2.

[0047] Combination Figure 5 As shown, a second limiting hole 15 is further provided on the side of the valve body 1a, the second limiting hole 15 is communicated with the first rotation groove 6, a second limiting bolt 16 is threadedly connected to the second limiting hole 15, and the end of the second limiting bolt 16 abuts against the transmission shaft 41. The second limiting bolt 16 can abut against the transmission shaft 41 to prevent the transmission shaft 41 from moving up and down.

[0048] In this embodiment, combined with Figure 1 As shown, a push rod 17 is arranged on the valve bottom 1b along its length direction, and the push rod 17 is rotatable around its own axis direction, and the end of the push rod 17 penetrates into the valve port 2 and is connected to the valve plate 3. The push rod 17 can cooperate with the transmission shaft 41 to improve the rotation stability of the transmission shaft 41.

[0049] The third connecting parts 31 are respectively provided at both ends of the valve plate 3 . The thickness of the third connecting parts 31 is greater than the thickness of the valve plate 3 . The transmission shaft 41 and the push rod 17 are respectively connected to the two third connecting parts 31 .

[0050] A second rotation groove 18 is opened in the valve bottom 1b along its length direction, and the push rod 17 is rotatably inserted into the second rotation groove 18. One end of the push rod 17 passes through the valve port 2, and the other end passes through the valve bottom 1b and is limited by the external hexagonal bolt 1. The push rod 17 is rotatably connected to the external hexagonal bolt 19.

[0051] The implementation principle of a valve structure with a pressure relief function in an embodiment of the present application is:

[0052] The end cover 42 is rotated, and the end cover 42 drives the transmission shaft 41 to rotate synchronously through the cooperation of the protrusion and the slot 8. The hemispherical pressure relief portion 5 can disperse the material pressure or water hammer impact, so that the valve plate 3 is synchronously turned over and the valve port 2 is opened under the drive of the transmission shaft 41;

[0053] When the limit pin 10 reaches the tail end of the travel groove 9, the operator stops rotating the end cover 42, and then tightens the first limit bolt 14 and the second limit bolt 16 to keep the valve plate 3 and the transmission shaft 41 at corresponding positions;

[0054] To change the opening of the valve plate 3 , the operator needs to separate the end cover 42 from the valve body 1 , and then insert the fixing pin 11 into another fixing groove 12 , and change the opening of the valve plate 3 by changing the opening position of the valve plate 3 .

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A valve structure with a pressure relief function, comprising a valve body (1), a valve port (2) provided on the valve body (1), a valve plate (3) disposed in the valve port (2) and used for opening and closing the valve port (2), and a driving component (4) for driving the valve plate (3) to turn over, characterized in that: A pressure relief portion (5) is provided on one side of the valve plate (3); the pressure relief portion (5) is hemispherical, and the diameter of the pressure relief portion (5) is smaller than the length of the valve port (2).

2. A valve structure with pressure relief function according to claim 1, characterized in that: The valve body (1) comprises a coaxially arranged valve body (1a) and a valve bottom (1b), wherein the valve body (1a) and the valve bottom (1b) enclose the valve port (2), and the two ends of the valve plate (3) are rotatably connected to the valve body (1a) and the valve bottom (1b) respectively.

3. A valve structure with pressure relief function according to claim 2, characterized in that: The valve body (1a) is provided with a first rotation groove (6) along its length direction. The drive assembly (4) comprises a transmission shaft (41) which is rotatable around its own axis and is arranged in the first rotation groove (6). One end of the transmission shaft (41) penetrates into the valve port (2) and is connected to the valve plate (3).

4. A valve structure with pressure relief function according to claim 3, characterized in that: The end of the transmission shaft (41) away from the valve plate (3) is a driving end (411), and the driving end (411) is arranged to pass through the valve body (1a). The driving assembly (4) also includes an end cover (42) sleeved on the driving end (411).

5. A valve structure with pressure relief function according to claim 4, characterized in that: A protrusion is provided on the side of the driving end (411); an end of the end cover (42) close to the valve body (1a) is a first connecting portion (421); a connecting hole (7) is provided on the first connecting portion (421); a retaining groove (8) is provided on the hole wall of the connecting hole (7); the driving end (411) is inserted into the connecting hole (7), and the protrusion is accommodated in the retaining groove (8).

6. A valve structure with pressure relief function according to claim 5, characterized in that: An arc-shaped travel groove (9) is provided on the first connecting portion (421) around the circumference of the connecting hole (7), and the arc center of the travel groove (9) coincides with the center of the circle of the connecting hole (7). An end of the valve body (1a) close to the end cover (42) is a second connecting portion (1a1), and a limit pin (10) is provided on the second connecting portion (1a1), and the limit pin (10) is inserted into the travel groove (9) and is slidable along the extension direction of the travel groove (9).

7. A valve structure with pressure relief function according to claim 6, characterized in that: The first connecting portion (421) is also provided with a fixing pin (11), and the second connecting portion (1a1) is provided with at least two fixing grooves (12), wherein the at least two fixing grooves (12) are arranged circumferentially around the first rotating groove (6), and the fixing pin (11) is inserted into one of the fixing grooves (12).

8. The valve structure with pressure relief function according to claim 5, characterized in that: The side of the end cover (42) is also provided with a first limiting hole (13), the first limiting hole (13) is connected to the connecting hole (7), the first limiting hole (13) is internally threadedly connected to a first limiting bolt (14), and the end of the first limiting bolt (14) is in conflict with the driving end (411).

9. The valve structure with pressure relief function according to claim 3, characterized in that: The side of the valve body (1a) is also provided with a second limiting hole (15), the second limiting hole (15) is communicated with the first rotation groove (6), the second limiting hole (15) is internally threadedly connected with a second limiting bolt (16), and the end of the second limiting bolt (16) is in conflict with the transmission shaft (41).

10. The valve structure with pressure relief function according to claim 2, characterized in that: A push rod (17) is arranged on the valve bottom (1b) along its length direction. The push rod (17) is rotatable around its own axis direction. The end of the push rod (17) penetrates into the valve port (2) and is connected to the valve plate (3).

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