Adjusting air valve structure

Abstract

The utility model discloses an adjusting air valve structure which comprises a driving shaft, and the driving shaft is rotationally connected into an integrally-formed valve body. The driving shaft is fixedly connected with the handle at an angle of 90 degrees; the blade assembly is rotationally connected with the valve body through the driving shaft and the driven shafts, the blade assembly is fixedly connected with the driving shaft and the driven shafts, and the driven shafts are rotationally connected with the valve body. The blade assembly is located in the valve seat in the valve body. The number of the driving shaft is one, and the number of the driven shafts is multiple. The same ends of the driving shaft and the driven shaft are in transmission connection through a connecting rod assembly. The air valve solves the problems that an existing air valve body and blades are inconvenient to assemble, and the strength of a connecting rod is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a regulating air valve structure. Background Art

[0002] The air valve is an indispensable terminal control accessory and an important component in the ventilation, air conditioning and air purification projects of industrial plants, civil buildings, nuclear power plants, etc. It is generally used in the ventilation system pipeline to adjust the air volume and pressure of the branch pipe by adjusting the rotation opening of the air valve blade; it can also be used to adjust the mixing amount of fresh air and return air. In this way, the indoor temperature, humidity and pressure are kept within the specified limits, the filtered air is limited, and the diffusion of radioactive pollutants into the environment is reduced, so as to ensure that the working environment required by equipment and personnel is met under various working conditions such as industrial plants, civil buildings, nuclear power plants, etc.

[0003] At present, the rectangular air valves used in existing industrial plants, civil buildings, nuclear power plants, etc. have the following disadvantages:

[0004] 1. The valve body structure is made of 4 C-shaped bent sheet metals riveted, bolted or welded. The riveted and bolted damper bodies are mostly used in industrial plants or civil building ventilation systems. Such valve body structures are relatively thin, not earthquake-resistant, and have low overall strength. The welded damper bodies are mostly used in nuclear power plant ventilation systems. Such valve bodies have good earthquake resistance and high overall strength. However, the above rectangular damper body structures all require 4 pieces of sheet metal cutting: upper / lower / left / right frames, which are bent separately and then riveted, bolted and welded to form various connection types. There are many problems in the production process of this valve body: first, it is troublesome to assemble, time-consuming and labor-intensive; second, due to the long and long welds during welding, deformation is easy to occur; in addition, due to the similar appearance of the upper / lower / left / right frames of the valve body, mistakes and confusion with the upper / lower / left / right frames of other valve bodies are often made during batch cutting and overall forming, resulting in rework and repair of the entire valve body after assembly, or even scrapping.

[0005] 2. The valve blade assembly is composed of two blades buckled together, connected by bolts and nuts. There are a large number of bolts and nuts on each blade. The assemblers need to be on both sides of the valve, one person on one side holds the hexagonal head of the bolt with a wrench, and the other person on the other side uses a wrench to tighten the nut; this is a particular test of the assemblers' collaborative ability and professional ability, and the efficiency of tightening the bolts is relatively low.

[0006] 3. The connecting rod is a heavy straight plate structure, and the raw material plates need to be of various thicknesses, which is inconvenient to purchase, easy to mix up during assembly and has low strength.

[0007] How to design a new type of damper for nuclear power plants through technical improvements, adopt a new structural type, improve assembly efficiency, and ensure overall structural strength and beautiful appearance, while making it applicable not only in the industrial field but also in the field of nuclear power equipment with extremely strict design requirements, is an urgent problem to be solved by damper manufacturers. Summary of the invention

[0008] In order to achieve the above-mentioned purpose, the utility model provides a regulating air valve structure, which solves the problems that the existing air valve body and blades are inconvenient to assemble and the connecting rod strength is low.

[0009] In order to solve the above technical problems, the technical solution adopted by the utility model is a regulating air valve structure, including an active shaft, which is rotatably connected to an integrally formed valve body; the active shaft is fixedly connected to the handle at 90 degrees; the blade assembly is rotatably connected to the valve body through the active shaft and the passive shaft, wherein the blade assembly is fixedly connected to the active shaft and multiple passive shafts respectively, and the passive shaft is rotatably connected to the valve body; the blade assembly is located in a valve seat inside the valve body; one active shaft is provided and multiple passive shafts are provided; the same end of the active shaft and the passive shaft is transmission-connected via a connecting rod assembly.

[0010] Furthermore, the rocker arms are respectively fixed to one end of the driving shaft and each passive shaft; the rocker arm fixed on the driving shaft is connected to the rocker arm on an adjacent passive shaft through a first connecting rod, and the rocker arms on the remaining passive shafts are connected through a second connecting rod.

[0011] Furthermore, the cross section of the first connecting rod is U-shaped.

[0012] Furthermore, the blade assembly includes blades, a sealing strip is located between the two ends of the two blades, a low square neck bolt passes through the two blades and is fastened by a first nut, a first washer is sleeved on the low square neck bolt and is located between the first nut and the blade; a square hole is opened on the blade, and the square neck of the low square neck bolt is clamped in the square hole.

[0013] Furthermore, the driving shaft and the handle are fixedly connected via a pressing block and a first bolt, wherein the pressing block is fixed on the driving shaft, and the driving shaft and the pressing block are fixed together via the first bolt.

[0014] Furthermore, a butterfly nut is provided on the handle, the butterfly nut is threadedly connected to the arc groove in the bracket, and the bracket is fixed on the valve body.

[0015] Furthermore, each of the passive shafts and the active shaft is rotatably connected to the valve body via bearings, and each bearing is respectively fixed in a corresponding bearing seat.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model reduces the probability of errors in the production process of the valve body, reduces the number of parts, reduces the bending process, and improves work efficiency.

[0018] 2. The utility model reduces the length and number of the welds of the valve body, reduces the overall deformation of the valve body, and improves the shape of the valve body and the position accuracy of each mounting hole.

[0019] 3. The utility model opens square holes on the blades and uses low square neck bolts when assembling the blades, which reduces the difficulty of operation, greatly improves the assembly efficiency, and reduces the labor cost.

[0020] 4. The utility model adopts a C-type connecting rod structure, which improves the strength and meets the unique requirements of nuclear power without increasing the cost through sheet metal bending.

[0021] 5. The utility model can be applied in both industrial and nuclear power fields. Its structural strength is superior to that of existing similar products and its appearance is smooth and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the structure of the regulating air valve of an embodiment of the utility model.

[0024] Figure 2 yes Figure 1 Left view of .

[0025] Figure 3 yes Figure 1 LL cross-sectional view.

[0026] Figure 4 yes Figure 1 KK cross-sectional view.

[0027] Figure 5 It is a structural schematic diagram of a blade assembly according to an embodiment of the utility model.

[0028] In the figure, 1. handle, 2. first connecting rod, 3. passive shaft, 4. rocker arm, 5. bracket, 6. valve body, 7. blade assembly, 8. bearing seat, 9. driving shaft, 10. pressure block, 11. second connecting rod, 12. butterfly nut, 13. first bolt, 14. valve seat, 15. second nut, 16. second washer, 17. second bolt, 701. low square neck bolt, 702. blade, 703. first nut, 704. first washer, 705. sealing strip. DETAILED DESCRIPTION

[0029] 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.

[0030] like Figure 1~Figure 5 As shown, the utility model provides a regulating air valve structure, including an integrally formed valve body 6, an active shaft 9 rotatably connected in the valve body 6; the active shaft 9 is fixedly connected to the handle 1 at 90 degrees; the blade assembly 7 is rotatably connected to the valve body 6 through the active shaft 9 and the passive shaft 3, wherein the blade assembly 7 is respectively fixedly connected to the active shaft 9 and multiple passive shafts 3, and the passive shaft 3 is rotatably connected to the valve body 6; the blade assembly 7 is located in the valve seat 14 inside the valve body 6; the active shaft 9 is provided with one, and the passive shaft 3 is provided with multiple; the active shaft 9 and the same end of the passive shaft 3 are connected by a connecting rod assembly. Manually rotating the handle 1 drives the active shaft 9 to rotate, and the active shaft 9 drives each passive shaft 3 to rotate through the connecting rod assembly, thereby controlling the opening and closing of the blade assembly 7. The valve body 6 is integrally formed, which reduces the process of installing the valve body 6 and reduces the number of welds, thereby reducing welding deformation.

[0031] In some embodiments, the connecting rod assembly includes a rocker arm 4, which is fixed to the driving shaft 9 and one end of each passive shaft 3; the rocker arm 4 fixed to the driving shaft 9 is connected to the rocker arm 4 on the adjacent passive shaft 3 through the first connecting rod 2; the rocker arms 4 on the remaining passive shafts 3 are connected to each other through the second connecting rod 11, wherein the rocker arm 4 connected to the first connecting rod 2 is connected to the first connecting rod 2 in rotation, and the rocker arm 4 connected to the second connecting rod 11 is connected to the second connecting rod 11 in rotation. The driving shaft 9 rotates to drive the rocker arm 4 connected thereto to rotate, thereby driving the rocker arm 4 connected to the passive shaft 3 to rotate through the first connecting rod 2, and the rocker arms 4 of each passive shaft 3 are connected through the second connecting rod 11, thereby driving all the passive shafts 3 to rotate.

[0032] In some embodiments, the cross section of the first connecting rod 2 is U-shaped (see Figure 4 ), which improves the strength compared to ordinary straight plates.

[0033] In some embodiments, each passive shaft 3 and active shaft 9 are rotatably connected to the valve body 6 via bearings, and each bearing is respectively fixed in a corresponding bearing seat 8. The rotational flexibility of each shaft and the valve body 6 is improved by the rotational connection of the bearings.

[0034] In some embodiments, the blade assembly 7 includes a blade 702, which is formed by a mold, a sealing strip 705 is located between the two ends of the two blades 702, a low square neck bolt 701 passes through the two blades 702 and is fastened by a first nut 703, and a first washer 704 is sleeved on the low square neck bolt 701 and is located between the first nut 703 and the blade 702. A square hole is opened on the blade 702, and the square neck of the low square neck bolt 701 is clamped in the square hole to prevent the low square neck bolt 701 from rotating when the first nut 703 is tightened.

[0035] There are a large number of bolts and first nuts 703 for assembly on the valve blade 702. In the existing assembly process, manpower is required to work / cooperate on the left and right, that is, to clamp the head of the bolt with a wrench on the left, and to clamp the first nut 703 with a wrench on the right to tighten it. And when the valve is large enough or the blade is large enough, two people are required to cooperate on both sides, which requires a very high level of proficiency for the operator and is very inefficient. On the basis of not increasing the cost, the utility model is optimized and adjusted, a square hole is opened on the blade 702, and a low square neck bolt 701 is used for installation. During the installation process, there is no need to clamp and tighten both sides with a wrench / tool. It is only necessary to push the low square neck bolt 701 into the square hole and then tighten the first nut 703. The efficiency is greatly improved and the requirements for operating skills are reduced.

[0036] In some embodiments, the driving shaft 9 and the handle 1 are fixedly connected via a pressure block 10 and a first bolt 13 , wherein the pressure block 10 is fixed on the driving shaft 9 , and the first bolt 13 fixes the driving shaft 9 and the pressure block 10 together.

[0037] In some embodiments, a butterfly nut 12 is provided on the handle 1, and the butterfly nut 12 is threadedly connected to the arc groove in the bracket 5 fixed on the valve body 6. The butterfly nut 12 clamps the handle 1, thereby controlling the opening / closing angle of the blade assembly 7.

[0038] The working process of the utility model is:

[0039] Manually rotate the handle 1, the handle 1 drives the active shaft 9 to rotate, the active shaft 9 drives the passive shafts 3 to rotate through the cooperation of the connecting rods and the rocker arms 4 in the connecting rod assembly, the active shaft 9 and the passive shaft 3 drive the blade assembly 7 connected thereto to rotate, so as to realize the opening / closing of the valve. When the valve is opened / closed to the specified opening, the handle 1 and the bracket 5 are fixed by the butterfly nut 12 to prevent the blade assembly 7 of the valve from reversing.

[0040] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A damper regulating structure, comprising a driving shaft (9), characterized in that: The driving shaft (9) is rotatably connected to the integrally formed valve body (6); the driving shaft (9) is fixedly connected to the handle (1) at 90 degrees; the blade assembly (7) is rotatably connected to the valve body (6) via the driving shaft (9) and the passive shaft (3), wherein the blade assembly (7) is respectively fixedly connected to the driving shaft (9) and a plurality of passive shafts (3), and the passive shaft (3) is rotatably connected to the valve body (6); the blade assembly (7) is located in a valve seat (14) inside the valve body (6); one driving shaft (9) is provided, and a plurality of passive shafts (3) are provided; and the same end of the driving shaft (9) and the passive shaft (3) are transmission-connected via a connecting rod assembly.

2. The damper structure according to claim 1, characterized in that: The rocker arms (4) are respectively fixed to the driving shaft (9) and one end of each driven shaft (3); the rocker arm (4) fixed on the driving shaft (9) is connected to the rocker arm (4) on an adjacent driven shaft (3) via a first connecting rod (2), and the rocker arms (4) on the remaining driven shafts (3) are connected to each other via a second connecting rod (11).

3. The damper structure according to claim 2, characterized in that: The cross section of the first connecting rod (2) is U-shaped.

4. The damper structure according to claim 1, characterized in that: The blade assembly (7) comprises a blade (702), a sealing strip (705) located between the two ends of the two blades (702), a low square neck bolt (701) passing through the two blades (702) and being fastened by a first nut (703), a first washer (704) sleeved on the low square neck bolt (701) and located between the first nut (703) and the blade (702); a square hole is opened on the blade (702), and the square neck of the low square neck bolt (701) is clamped in the square hole.

5. The damper structure according to claim 1, characterized in that: The driving shaft (9) and the handle (1) are fixedly connected via a pressing block (10) and a first bolt (13), wherein the pressing block (10) is fixed on the driving shaft (9), and the driving shaft (9) and the pressing block (10) are fixed together via the first bolt (13).

6. The damper structure according to claim 1, characterized in that: The handle (1) is provided with a butterfly nut (12), the butterfly nut (12) being threadedly connected to an arc-shaped groove in the bracket (5), and the bracket (5) is fixed on the valve body (6).

7. The damper structure according to claim 1, characterized in that: Each of the passive shafts (3) and the active shaft (9) is rotatably connected to the valve body (6) via bearings, and each bearing is fixed in a corresponding bearing seat (8).

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