Air volume adjusting valve with good sealing performance

Abstract

The utility model provides an air volume regulating valve with good sealing performance, which belongs to the technical field of air volume regulating valves and comprises a valve body, an air duct is arranged in the valve body, two ends of the air duct are connecting flanges, two ends of a linkage shaft of a blade are rotatably connected with the inside of the air duct through couplings, and the linkage shaft is connected with the valve body. A linkage shaft is fixedly connected to the top end of the valve body, a valve handle is fixedly connected to the top end of the linkage shaft, a locking mechanism is arranged between the valve handle and the valve body, blade baffles are fixedly connected to the inner walls of the two sides of the air duct, baffle grooves matched with the blade baffles are formed in the two ends of each blade, and first sealing layers are arranged at the outer ends of the baffle grooves. The blade and the valve handle are parallel to each other on the same vertical shaft, and the blade is fixedly connected with the valve handle through the linkage shaft; the utility model can solve the problem of untight closing caused by poor sealing effect of the valve port.

Description

Technical Field

[0001] The utility model belongs to the technical field of air volume regulating valves, and in particular relates to an air volume regulating valve with good sealing performance. Background Art

[0002] In the field of building mechanical and electrical construction in my country, especially in building ventilation systems, air volume regulating valves are needed to control and adjust the air volume. Whether in air conditioning supply and exhaust systems, medical purification air conditioning systems or smoke exhaust systems, if the air valve is not tightly sealed, it will cause system leakage and cross-winding problems. These problems will not only cause the loss of system air volume and energy waste, but may also cause polluted gases or harmful gases in the medical environment to enter the ward or even the operating room, posing a serious threat to people's health.

[0003] Although the common air volume regulating valves on the market have the advantages of simple structure and easy use, they have shortcomings in the sealing structure of the valve port. When closing the valve port, there is a gap between the valve core and the inner wall of the valve body, which may cause a loose closure, affecting the normal use of the entire ventilation system and easily causing adverse effects. Utility Model Content

[0004] In view of this, the utility model provides an air volume regulating valve with good sealing performance, which can solve the problem of poor sealing effect of the valve port, resulting in loose closing.

[0005] The utility model is achieved in this way:

[0006] The utility model provides an air volume regulating valve with good sealing performance, which comprises a valve body, an air duct is arranged inside the valve body, both ends of the air duct are connecting flanges, both ends of the linkage shaft of the blade are rotatably connected to the inside of the air duct through a coupling, the top end of the linkage shaft is fixedly connected with a valve handle, a locking mechanism is arranged between the valve handle and the valve body, blade baffles are fixedly connected to the inner walls on both sides of the air duct, both ends of the blade are provided with baffle grooves matching with the blade baffles, and the outer end of the baffle groove is provided with a first sealing layer.

[0007] The utility model provides an air volume regulating valve with good sealing performance, and the technical effects are as follows: by arranging a coupling, the valve handle can drive the linkage shaft to rotate inside the valve body, and at the same time drive the blades and the baffle grooves on both sides to cooperate with the blade baffles on the inner wall of the air duct to realize the closure of the air duct, thereby achieving the effect of closing the air volume; by arranging a locking mechanism, it is used to control the ventilation volume inside the valve body according to the rotation angle.

[0008] On the basis of the above technical solution, the utility model of an air volume regulating valve with good sealing performance can also be improved as follows:

[0009] Wherein, the blade and the valve handle are parallel to the same vertical axis, and the blade is fixedly connected to the valve handle via the linkage shaft.

[0010] The beneficial effect of adopting the above-mentioned improvement scheme is: by keeping the blade and the valve handle parallel to the same vertical axis, the rotation angle of the valve handle on the locking mechanism is the opening angle of the blade and the baffle groove, which facilitates the adjustment of the air volume.

[0011] Furthermore, the blade baffle on one side and the blade baffle on the other side are symmetrically arranged with respect to the axial center point of the linkage shaft, and a second sealing layer is arranged at the contact end between the blade baffle and the baffle groove.

[0012] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing a centrally symmetrical blade baffle, when the valve handle drives the blade to rotate, it can cooperate with the blade baffle on the inner wall of the air duct to achieve a sealing effect.

[0013] Furthermore, the baffle groove at one end of the blade and the baffle groove at the other end are also symmetrical about the axis center point of the linkage shaft.

[0014] The beneficial effect of adopting the above-mentioned improvement scheme is: by setting the baffle groove symmetrically at the center point, the baffle groove can cooperate with the blade rotation and cooperate with the baffle grooves on both sides of the inner wall of the air duct to achieve the effect of closing the air duct.

[0015] Furthermore, the locking mechanism includes an adjusting platform, the bottom of the adjusting platform is fixedly connected to the top of the valve body, and the coupling at the top of the air duct passes through the middle of the adjusting platform.

[0016] Furthermore, an angle adjuster is provided on one side of the adjustment platform, and an arc-shaped adjustment slot is provided on the angle adjuster.

[0017] Furthermore, a through hole is provided at a position of the valve handle corresponding to the arc-shaped adjustment groove.

[0018] Furthermore, the locking mechanism also includes a locking bolt, and the locking bolt includes an upper nut and a lower bolt.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are: by setting an angle adjuster and a locking bolt, the valve handle can cooperate with the locking bolt to adjust the angle along the arc-shaped adjustment groove path on the angle adjuster, and the upper nut and the lower bolt can be used to lock the opening and closing angle of the blade driven by the gear lever, thereby maintaining a fixed amount of air output and preventing accidental touch.

[0020] Furthermore, both ends of the upper nut and the lower bolt are fixedly connected with a shift rod, and the outside of the shift rod is wrapped with a rubber flexible layer.

[0021] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing the rubber flexible layer, the comfort when rotating and adjusting the locking bolt is improved.

[0022] Furthermore, an angle scale is printed on the end of the angle adjuster corresponding to the arc-shaped adjustment slot.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are: by printing an angle scale, it is used to accurately judge the opening and closing angle of the blades, and to achieve precise and slight air volume adjustment according to the angle of the scale.

[0024] Compared with the prior art, the utility model provides an air volume regulating valve with good sealing performance, which has the following beneficial effects: by setting a coupling, the valve handle can drive the linkage shaft to rotate inside the valve body, and at the same time drive the blades and the baffle grooves on both sides to cooperate with the blade baffles on the inner wall of the air duct to achieve the closure of the air duct, thereby achieving the effect of closing the air volume; by setting a locking mechanism, it is used to control the ventilation volume inside the valve body according to the rotation angle; by keeping the blades and the valve handle parallel to the same vertical axis, the rotation angle of the valve handle on the locking mechanism is the opening angle of the blades and the baffle grooves, which is convenient for adjusting the air volume; by setting a centrally symmetrical blade baffle, the valve handle can cooperate with the blade baffle on the inner wall of the air duct when driving the blade to rotate, thereby achieving a sealing effect; by setting an angle adjuster and a locking bolt, the valve handle can cooperate with the locking bolt to adjust the angle along the arc-shaped adjustment groove path on the angle adjuster, and the upper nut and the lower bolt can be used to lock the opening and closing angle of the blade driven by the gear lever, thereby maintaining a quantitative air outlet and preventing accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of an air volume regulating valve with good sealing performance;

[0027] Figure 2 It is a top schematic diagram of an air volume regulating valve with good sealing performance;

[0028] Figure 3 It is a top view of the internal section of an air volume control valve with good sealing performance;

[0029] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 10. Valve body; 11. Air duct; 12. Connecting flange; 13. Blade; 14. Linkage shaft; 15. Coupling; 16. Valve handle; 17. Blade baffle; 18. Baffle groove; 19. First sealing layer; 20. Second sealing layer; 21. Adjustment platform; 22. Angle adjuster; 23. Locking bolt; 24. Upper nut; 25. Lower bolt; 26. Gear lever. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0033] like Figure 1-4 As shown, it is an embodiment of an air volume regulating valve with good sealing performance provided by the utility model. In this embodiment, it includes a valve body 10, an air duct 11 is arranged inside the valve body 10, and connecting flanges 12 are arranged at both ends of the air duct 11. Both ends of the linkage shaft 14 of the blade 13 are rotatably connected to the inside of the air duct 11 through a coupling 15, and a valve handle 16 is fixedly connected to the top end of the linkage shaft 14. A locking mechanism is arranged between the valve handle 16 and the valve body 10. Blade baffles 17 are fixedly connected to the inner walls of both sides of the air duct 11, and baffle grooves 18 matching the blade baffles 17 are arranged at both ends of the blade 13, and a first sealing layer 19 is arranged at the outer end of the baffle groove 18.

[0034] When in use, the two ends of the air duct 11 are fixedly installed with the ventilation duct through the connecting flange 12. When adjusting the air volume, the locking bolt 23 is loosened and the valve handle 16 is moved to adjust along the arc-shaped adjustment groove on the angle adjuster 22. At this time, the opening and closing angle of the blade 13 is consistent with the indicated angle of the valve handle 16 along the angle adjuster 22. After the adjustment is completed, the locking bolt 23 is tightened; when the air duct 11 needs to be closed, the locking bolt 23 is loosened and the valve handle 16 is moved to the starting position of the arc-shaped adjustment groove. At this time, the baffle grooves 18 at both ends of the blade 13 are engaged with the blade baffles 17 on both sides of the inner wall of the air duct 11, and the first sealing layer 19 is contacted and sealed with the second sealing layer 20 to achieve the effect of closing the air duct 11 and stopping ventilation.

[0035] Among them, in the above technical solution, the blade 13 and the valve handle 16 are parallel to the same vertical axis, and the blade 13 is fixedly connected to the valve handle 16 through the linkage shaft 14.

[0036] Furthermore, in the above technical solution, the blade baffle 17 on one side is symmetrically arranged with respect to the blade baffle 17 on the other side about the axis center point of the linkage shaft 14 , and a second sealing layer 20 is arranged at the contact end between the blade baffle 17 and the baffle groove 18 .

[0037] Among them, the blade baffle 17 is 45° to the inner wall of the air duct 11, and the baffle groove 18 is 135° to the overlap of the blade 13, ensuring that they can be fully contacted and closed when matched with the blade baffle 17; the first sealing layer 19 and the second sealing layer 20 are made of ceramic fiber sealing strips, and the sealing material is glued and fixed to the baffle groove 18 and the blade baffle 17 by high-temperature resistant glue to enhance their contact sealing.

[0038] Furthermore, in the above technical solution, the baffle groove 18 at one end of the blade 13 and the baffle groove 18 at the other end are also symmetrical about the axis center point of the linkage shaft 14 .

[0039] Furthermore, in the above technical solution, the locking mechanism includes an adjusting platform 21 , the bottom of the adjusting platform 21 is fixedly connected to the top of the valve body 10 , and the coupling 15 at the top of the air duct 11 passes through the middle of the adjusting platform 21 .

[0040] Furthermore, in the above technical solution, an angle adjuster 22 is provided on one side of the adjustment platform 21 , and an arc-shaped adjustment groove is provided on the angle adjuster 22 .

[0041] Furthermore, in the above technical solution, a through hole is provided at a position of the valve handle 16 corresponding to the arc-shaped adjustment groove.

[0042] Furthermore, in the above technical solution, the locking mechanism also includes a locking bolt 23 , and the locking bolt 23 includes an upper nut 24 and a lower bolt 25 .

[0043] Furthermore, in the above technical solution, both ends of the upper nut 24 and the lower bolt 25 are fixedly connected with a shift rod 26, and the outside of the shift rod 26 is wrapped with a rubber flexible layer.

[0044] Furthermore, in the above technical solution, an angle scale is printed on the end of the angle adjuster 22 corresponding to the arc-shaped adjustment groove.

[0045] Specifically, the principle of the utility model is: when in use, the two ends of the air duct 11 are fixedly installed with the ventilation duct through the connecting flange 12. When adjusting the air volume, the locking bolt 23 is loosened and the valve handle 16 is moved to adjust along the arc-shaped adjustment groove on the angle adjuster 22. At this time, the opening and closing angle of the blade 13 is consistent with the indicated angle of the valve handle 16 along the angle adjuster 22. After the adjustment is completed, the locking bolt 23 is tightened; when the air duct 11 needs to be closed, the locking bolt 23 is loosened and the valve handle 16 is moved to the starting position of the arc-shaped adjustment groove. At this time, the baffle grooves 18 at both ends of the blade 13 are buckled with the blade baffles 17 on both sides of the inner wall of the air duct 11, and the first sealing layer 19 is contacted and sealed with the second sealing layer 20 to achieve the effect of closing the air duct 11 and stopping ventilation.

Claims

1. An air volume regulating valve with good sealing performance, characterized in that: The invention comprises a valve body (10), wherein an air duct (11) is arranged inside the valve body (10), and the two ends of the air duct (11) are connecting flanges (12), and the two ends of the linkage shaft (14) of the blade (13) are rotatably connected to the inside of the air duct (11) through a coupling (15), and the top end of the linkage shaft (14) is fixedly connected to a valve handle (16), and a locking mechanism is arranged between the valve handle (16) and the valve body (10), and blade baffles (17) are fixedly connected to the inner walls on both sides of the air duct (11), and baffle grooves (17) matching with the blade baffles (17) are arranged at both ends of the blade (13). 8), a first sealing layer (19) is provided at the outer end of the baffle groove (18), the blade baffle (17) on one side and the blade baffle (17) on the other side are symmetrically arranged with respect to the axial center point of the linkage shaft (14), a second sealing layer (20) is provided at the contact end of the blade baffle (17) and the baffle groove (18), the blade baffle (17) and the inner wall of the air duct (11) are at an angle of 45 degrees, the baffle groove (18) and the blade (13) overlap at an angle of 135 degrees, and the first sealing layer (19) and the second sealing layer (20) are ceramic fiber sealing strips.

2. The air volume regulating valve with good sealing performance according to claim 1, characterized in that: The blade (13) and the valve handle (16) are parallel to the same vertical axis, and the blade (13) is fixedly connected to the valve handle (16) via the linkage shaft (14).

3. The air volume regulating valve with good sealing performance according to claim 2, characterized in that: The baffle groove (18) at one end of the blade (13) and the baffle groove (18) at the other end are also symmetrical about the axis center point of the linkage shaft (14).

4. The air volume regulating valve with good sealing performance according to claim 3, characterized in that: The locking mechanism comprises an adjustment platform (21), the bottom of the adjustment platform (21) is fixedly connected to the top of the valve body (10), and the coupling (15) at the top of the air duct (11) passes through the middle of the adjustment platform (21).

5. The air volume regulating valve with good sealing performance according to claim 4, characterized in that: An angle adjuster (22) is provided on one side of the adjustment platform (21), and an arc-shaped adjustment slot is provided on the angle adjuster (22).

6. The air volume regulating valve with good sealing performance according to claim 5, characterized in that: The valve handle (16) is provided with a through hole at a position corresponding to the arc-shaped adjustment groove.

7. The air volume regulating valve with good sealing performance according to claim 6, characterized in that: The locking mechanism further comprises a locking bolt (23), wherein the locking bolt (23) comprises an upper nut (24) and a lower bolt (25).

8. The air volume regulating valve with good sealing performance according to claim 7, characterized in that: Both ends of the upper nut (24) and the lower bolt (25) are fixedly connected with a shift rod (26), and the outside of the shift rod (26) is wrapped with a rubber flexible layer.

9. The air volume regulating valve with good sealing performance according to claim 8, characterized in that: An angle scale is printed on the end of the angle adjuster (22) corresponding to the arc-shaped adjustment slot.

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