Air volume adjusting valve and air volume adjustable type air duct

Abstract

The utility model provides an air volume adjusting valve and an air volume adjustable type air duct, relates to the technical field of winnowing machines, and solves the problems that the air volume can only be adjusted in a small range and the air volume of the air duct is not easy to control in a large range in the conventional air blasting equipment. The air volume adjusting valve comprises a driving assembly; the fan blades are in transmission connection with the driving assembly, the driving assembly drives the fan blades to rotate in the air duct, and air volume adjustment is achieved by changing the ventilation sectional area of the air duct. And at least two air volume adjusting valves are arranged in the air volume adjustable air duct. According to the scheme, the air speed, the air volume and the air blowing angle of the air blowing opening can be adjusted by controlling the air volume adjusting valve, and the large-range adjustment of the ventilation volume of the air duct is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air separators, in particular to an air volume regulating valve and an air volume adjustable air duct. Background Art

[0002] A pneumatic separator is a device that uses airflow to separate materials. Its operating principle is to use the inertia of high-speed airflow and the density of different materials to separate them into heavy and light materials. High-speed airflow is blown into the separator through an air duct by a blower or other ventilation device. To accommodate different types of materials, the airflow is typically controlled by controlling the airflow volume of the blower. However, controlling the blower only allows for small adjustments to the duct ventilation volume. Due to the structure of the duct, large-scale adjustment is difficult. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide an air volume regulating valve and an adjustable air volume type air duct. The solution of the present invention realizes a large range of adjustment of the ventilation volume of the air duct by controlling the air volume regulating valve, thereby solving the problem that the current blower equipment can only adjust the ventilation volume of the air duct in a small range and it is difficult to achieve a large range of adjustment of the ventilation volume of the air duct.

[0004] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0005] An air volume regulating valve, comprising:

[0006] Drive components;

[0007] A fan blade is connected to the drive assembly, and the drive assembly drives the fan blade to rotate in the air duct, wherein the working surface of the fan blade forms an angle of -90 degrees to 90 degrees with the longitudinal section of the air duct, and the air volume is adjusted by changing the ventilation cross-sectional area of the air duct;

[0008] Wherein, the driving assembly includes: a driving handle; a driving screw fixedly connected to the driving handle;

[0009] a connecting rod fixedly connected to the drive screw; and a connecting portion, the connecting portion being hingedly mounted on the connecting rod, and the fan blade being fixedly mounted on the connecting portion;

[0010] The driving screw provides a driving force along its axial direction, and the driving force causes the connecting rod to reciprocate along the axial direction of the driving screw and drives the connecting portion to drive the fan blades to rotate.

[0011] Optionally, the connecting portion includes:

[0012] A connecting plate drivingly connected to the connecting rod;

[0013] A rotating shaft is fixedly connected to the connecting plate, and the rotating shaft is fixedly connected to the fan blades and is rotatably mounted on the air duct.

[0014] Optionally, the connecting rod is provided with an oblong hole, and the extending direction of the oblong hole is perpendicular to the direction of the driving force;

[0015] The end of the connecting plate is hingedly installed in the oblong hole and moves in the oblong hole under the driving force of the connecting plate to drive the rotating shaft to rotate.

[0016] Optionally, the air volume regulating valve also includes:

[0017] The mounting bracket is provided with an internal thread block, and the driving screw is spirally mounted on the internal thread block and can reciprocate along the internal thread block.

[0018] The utility model also provides an air duct with adjustable air volume, wherein at least two air volume regulating valves are provided in the air duct, and the air volume regulating valves are the air volume regulating valves described above.

[0019] Optionally, the at least two air volume regulating valves include: a first air volume regulating valve, a second air volume regulating valve and a third air volume regulating valve, the first air volume regulating valve is located at the entrance of the air duct, and the second air volume regulating valve and the third air volume regulating valve are respectively located at the air outlet of the air duct.

[0020] Optionally, an air outlet is further provided below the air duct inlet, and the first air volume regulating valve is located between the air duct inlet and the air outlet.

[0021] Optionally, the second air volume regulating valve and the third air volume regulating valve are arranged opposite to each other at the air outlet of the air duct along the extension direction of the air duct;

[0022] Among them, the second air volume regulating valve and the third air volume regulating valve cooperate to change the ventilation cross-sectional area and blowing angle of the air duct blowing port by adjusting independently, synchronously and in the same direction, approaching each other or moving away from each other.

[0023] Optionally, the longitudinal cross-section of the air duct is square.

[0024] The above solution of the utility model includes at least the following beneficial effects:

[0025] 1) The air duct is equipped with three regulating valves. One regulating valve is located at the entrance of the air duct to adjust the air intake of the air duct and discharge the excess air. The other two regulating valves are located at the air outlet of the air duct. Through the cooperation of the two regulating valves, the wind speed, air volume and blowing angle of the air outlet can be adjusted.

[0026] 2) The regulating valve can be adjusted manually to adjust the air volume and wind speed by changing the ventilation cross-sectional area of the air duct, which is easy to operate;

[0027] 3) The connecting rod of the regulating valve is provided with an oblong hole, and the connecting plate moves in the oblong hole to drive the fan blades to rotate, thereby achieving air volume regulation, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of the air volume control valve according to an embodiment of the present utility model;

[0029] Figure 2 This is a front view of the structure of the air volume regulating valve according to an embodiment of the present utility model;

[0030] Figure 3 This is a structural diagram of the connecting rod of the air volume regulating valve according to an embodiment of the present utility model;

[0031] Figure 4 This is a structural diagram of an air volume regulating valve mounting bracket according to an embodiment of the present utility model;

[0032] Figure 5 This is a schematic structural diagram of an adjustable air volume air duct according to an embodiment of the present invention;

[0033] Among them, 1. connecting rod; 2. connecting plate; 21. hinge shaft; 3. fan blade; 4. rotating shaft; 5. driving handle; 6. driving screw; 7. mounting bracket; 8. oblong hole; 9. internal thread block; 10. nut; 11. air duct inlet; 12. air duct blowing port; 131. first air volume regulating valve; 132. second air volume regulating valve; 133. third air volume regulating valve. DETAILED DESCRIPTION

[0034] The following describes exemplary embodiments of the present invention in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0035] like Figure 1 and Figure 2 As shown, an embodiment of the present invention proposes an air volume regulating valve, comprising: a drive assembly; a fan blade 3 transmission-connected to the drive assembly, the drive assembly drives the fan blade 3 to rotate in the air duct, and the working surface of the fan blade 3 forms an angle of -90 degrees to 90 degrees with the longitudinal section of the air duct, that is, the air volume regulation is achieved by changing the ventilation cross-sectional area of the air duct.

[0036] In this embodiment, the air volume regulating valve includes a drive assembly and a fan blade 3. The fan blade 3 and the drive assembly are connected by a transmission mechanism, and the fan blade 3 can rotate in the air duct under the drive of the drive assembly. When the fan blade 3 rotates to a position perpendicular to the air duct, that is, the working surface of the fan blade 3 is 90 degrees to the longitudinal section of the air duct, the ventilation cross-sectional area of the air duct is minimized, and the air volume of the air duct is minimized. When the fan blade 3 gradually rotates to a position inclined to the air duct, the ventilation cross-sectional area of the air duct gradually increases, and the air volume of the air duct also gradually increases. Until the fan blade 3 is parallel to the air duct, that is, the working surface of the fan blade 3 is 0 degrees to the longitudinal section of the air duct, the ventilation cross-sectional area of the air duct is maximized, and the air volume of the air duct is also maximized. In actual use, the fan blade 3 can rotate 180 degrees in both directions.

[0037] The technical solution of the utility model realizes a large range adjustment of the ventilation volume of the air duct by controlling the air volume regulating valve, thereby solving the problem that the control of the blower equipment can only adjust the ventilation volume of the air duct in a small range and the ventilation volume of the air duct is difficult to achieve a large range adjustment.

[0038] For example Figure 1 and Figure 2 As shown, an optional embodiment of the present invention, the driving assembly includes: a driving handle 5; a driving screw 6 fixedly connected to the driving handle 5, and the driving handle 5 drives the driving screw 6 to rotate along the axis of the driving screw 6 under the action of an external force; a connecting rod 1 fixedly connected to the driving screw 6; and a connecting portion, the connecting portion being hingedly mounted on the connecting rod 1, and the connecting portion being fixedly connected to the fan blade 3. The driving screw 6 provides a driving force along its axis, and this driving force causes the connecting rod 1 to reciprocate along the axis of the driving screw 6 together with the driving screw 6, and drives the connecting portion to rotate the fan blade 3.

[0039] In this embodiment, the driving handle 5 is fixedly mounted on the end of the driving screw 6 and is coaxially arranged with the driving screw 6. The external force along the tangential direction of the driving handle 5 causes the driving handle 5 to rotate, and the driving handle 5 drives the driving screw 6 to rotate. This design is more labor-saving and convenient for the staff to operate. When in use, the staff rotates the driving handle 5, and the driving handle 5 drives the driving screw 6 to rotate, and the driving screw 6 drives the connecting rod 1 to reciprocate along the axis of the driving screw. Finally, the connecting rod 1 drives the connecting part to drive the fan blade 3 to rotate, thereby changing the angle between the working surface of the fan blade 3 and the longitudinal section of the air duct, adjusting the ventilation cross-sectional area of the air duct, and realizing a large range of adjustment of the ventilation volume of the air duct.

[0040] like Figure 1 and Figure 2As shown, an optional embodiment of the utility model, the connecting part includes: a connecting plate 2 that is transmission-connected to the connecting rod 1; a rotating shaft 4 fixedly connected to the connecting plate 2, the rotating shaft 4 is fixedly connected to the fan blade 3 and is rotatably mounted on the air duct; a nut 10 is fixedly provided on the connecting rod 1, and the nut 10 is threadedly fixedly connected to the end of the driving screw 6; an oblong hole 8 is provided on the connecting rod 1, and the extension direction of the oblong hole 8 is perpendicular to the direction of the above-mentioned driving force; the driving screw 6 drives the connecting rod 1 to reciprocate through the nut 10, and the end of the connecting plate 2 is hingedly mounted in the oblong hole 8, and moves in the oblong hole 8 under the drive of the driving force to drive the rotating shaft 4 to rotate.

[0041] from Figure 1 and Figure 3 It can be seen that the end of the connecting plate 2 can be set in the form of a hinge shaft 21, which is installed in the oblong hole 8. The hinge shaft 21 is perpendicular to the connecting plate 2, and the connecting plate 2 is perpendicular to the rotating shaft 4, and the axis of the hinge shaft 21 is offset relative to the axis of the rotating shaft 4.

[0042] In this embodiment, when the driving handle 5 drives the driving screw 6 to rotate, the relative movement of the driving screw 6 and the internal thread block 9 causes the driving screw 6 to generate a linear reciprocating motion while rotating; a nut 10 is provided on the connecting rod 1, and the end of the driving screw 6 is fixedly matched with the nut 10, so the linear movement of the driving screw 6 will drive the connecting rod 1 to reciprocate; the connecting rod 1 is provided with an oblong hole 8, and the connecting plate 2 of the rotating shaft 4 is hingedly mounted on the oblong hole 8. When the connecting rod 1 reciprocates, it generates a driving force on the connecting plate 2 in the same direction as the reciprocating motion. The connecting plate 2 is fixedly connected to the rotating shaft 4, and the rotating shaft 4 is rotatably mounted on the air duct. Therefore, under the action of the driving force, the end of the connecting plate 2 moves in the oblong hole 8, and the connecting plate 2 will rotate around the axis of the rotating shaft 4, thereby driving the fan blades 3 fixedly connected to the rotating shaft 4 to produce synchronous rotation.

[0043] like Figure 4 As shown, an air volume regulating valve proposed in an embodiment of the utility model further includes: a mounting bracket 7, which can be installed on a device housing (for example, a housing of an air duct), and an internal thread block 9 is provided on the mounting bracket 7, and the drive screw 6 is spirally installed on the internal thread block 9.

[0044] In this embodiment, a mounting bracket 7 is provided on the device casing, which can realize the fixed installation of the air volume control valve on the air duct; an internal thread block 9 is provided on the mounting bracket 7, and the drive screw 6 is spirally installed on the internal thread block 9, which can improve the stability of the drive screw 6 during movement.

[0045] like Figure 5As shown, an embodiment of the present utility model proposes an adjustable air volume type air duct, and a first air volume regulating valve 131, a second air volume regulating valve 132 and a third air volume regulating valve 133 are provided in the air duct, and the first air volume regulating valve 131 is located at the air duct inlet 11, and the second air volume regulating valve 132 and the third air volume regulating valve 133 are respectively located at the air duct blowing port 12; an air outlet is also provided below the air duct inlet 11, and the first air volume regulating valve 131 is located between the air duct inlet 11 and the air outlet, and the second air volume regulating valve 132 and the third air volume regulating valve 133 are relatively arranged at the air duct blowing port 12.

[0046] In this embodiment, the air duct inlet 11 is the connection point between the blower and the air duct, and the air duct outlet 12 is the end of the air duct, which blows out the air flow to sweep the materials. An air outlet is also provided below the air duct inlet 11. The first air volume regulating valve 131 is located between the air duct inlet 11 and the air outlet. The first air volume regulating valve 131 not only regulates the air volume entering the air duct, but also discharges the excess air flow from the air outlet. Specifically, the first air volume regulating valve 131 rotates by driving the rotating shaft 4 to adjust the opening of the air outlet and the air duct inlet 11. For example, if the first air volume regulating valve 131 completely blocks the air outlet, the air flow from the air duct will all enter the air duct; if the first air volume regulating valve 131 completely closes the air duct, the air flow from the air duct will all enter the air outlet and be discharged; if the first air volume regulating valve 131 partially opens the air duct, part of the air flow from the air duct will enter the air duct and part will be discharged from the air outlet.

[0047] At the air duct outlet 12, the second air volume regulating valve 132 and the third air volume regulating valve 133 cooperate to adjust the cross-sectional area of the air duct outlet, thereby adjusting the speed and flow of the air flow of the purging material, thereby achieving the purging of different materials. Specifically, the second air volume regulating valve 132 and the third air volume regulating valve 133 are arranged relative to each other along the extension direction of the pipeline at the air duct outlet 12, and can rotate around their respective rotation axes. The two valves cooperate to change the ventilation cross-sectional area and injection angle of the air duct outlet 12 by adjusting individually, synchronously and in the same direction, or by adjusting closer to or farther away from each other; the second air volume regulating valve 132 and the third air volume regulating valve 133 can operate independently of each other, that is, one does not operate while adjusting the other; the two valves can rotate synchronously and in the same direction to change the blowing angle, or can rotate closer to or farther away from each other to change the cross-sectional area; as the blades of the second air volume regulating valve 132 and the third air volume regulating valve 133 rotate, the cross-sectional area and blowing angle of the air duct outlet 12 can change, thereby changing the speed and blowing angle of the air flow.

[0048] The longitudinal section of the air duct mentioned above is a square section, and the air duct is directly connected to the fan, which reduces manufacturing costs.

[0049] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An air volume regulating valve, characterized in that: include: Drive components; A fan blade (3) is connected to the drive assembly in a transmission manner, the drive assembly drives the fan blade (3) to rotate in the air duct, the working surface of the fan blade (3) forms an angle of -90 degrees to 90 degrees with the longitudinal section of the air duct, and air volume adjustment is achieved by changing the ventilation cross-sectional area of the air duct; Wherein, the driving component includes: A driving handle (5); A drive screw (6) fixedly connected to the drive handle (5); a connecting rod (1) fixedly connected to the drive screw (6); and A connecting portion, the connecting portion being hingedly mounted on the connecting rod (1), and the fan blade (3) being fixedly mounted on the connecting portion; The driving screw (6) provides a driving force along its axial direction, and the driving force causes the connecting rod (1) to reciprocate along the axial direction of the driving screw (6) and drives the connecting portion to drive the fan blade (3) to rotate.

2. The air volume regulating valve according to claim 1, characterized in that: The connecting portion includes: a connecting plate (2) drivingly connected to the connecting rod (1); A rotating shaft (4) is fixedly connected to the connecting plate (2), and the rotating shaft (4) is fixedly connected to the fan blade (3) and is rotatably mounted on the air duct.

3. The air volume regulating valve according to claim 2, characterized in that: The connecting rod (1) is provided with an oblong hole (8), and the extending direction of the oblong hole (8) is perpendicular to the direction of the driving force; The end of the connecting plate (2) is hingedly mounted in the oblong hole (8) and moves in the oblong hole (8) under the driving force of the connecting plate to drive the rotating shaft (4) to rotate.

4. The air volume regulating valve according to claim 3, characterized in that: Also includes: The mounting bracket (7) is provided with an internal thread block (9), and the driving screw (6) is screw-mounted on the internal thread block (9) and can reciprocate along the internal thread block (9).

5. An air duct with adjustable air volume, characterized in that: At least two air volume regulating valves are provided in the air duct, and the air volume regulating valve is the air volume regulating valve according to any one of claims 1 to 4.

6. The adjustable air volume air duct according to claim 5, characterized in that: The at least two air volume regulating valves include: a first air volume regulating valve (131), a second air volume regulating valve (132), and a third air volume regulating valve (133); the first air volume regulating valve (131) is located at the air duct inlet (11); the second air volume regulating valve (132) and the third air volume regulating valve (133) are respectively located at the air duct blowing port (12).

7. The adjustable air volume air duct according to claim 6, characterized in that: An air outlet is also provided below the air duct inlet (11), and the first air volume regulating valve (131) is located between the air duct inlet (11) and the air outlet.

8. The adjustable air volume air duct according to claim 6, characterized in that: The second air volume regulating valve (132) and the third air volume regulating valve (133) are arranged opposite to each other at the air duct blowing port (12) along the extension direction of the air duct; The second air volume regulating valve (132) and the third air volume regulating valve (133) cooperate to change the ventilation cross-sectional area and the blowing angle of the air duct blowing port (12) by adjusting independently, adjusting synchronously in the same direction, moving closer to each other or moving away from each other.

9. The adjustable air volume air duct according to claim 5, characterized in that: The longitudinal section of the air duct is square.

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