Air speed adjusting valve and air-speed-adjustable air duct

Abstract

The utility model provides an air speed adjusting valve and an air-speed-adjustable air duct, belongs to the technical field of winnowing machines, and solves the problems that an air speed adjusting mechanism of an existing winnowing machine is labor-consuming, easy to block, small in adjusting range, incapable of quantizing adjusting quantity and capable of causing turning plate deviation due to long-time vibration. The wind speed regulating valve comprises a driving assembly and a wind speed regulating assembly, the turning plate is in transmission connection with the driving assembly, the driving assembly drives the turning plate to rotate in the air duct, and the air speed is adjusted by changing the opening area of the air duct nozzle. According to the technical scheme, a combination mode of combining lead screw transmission and a connecting rod mechanism is provided, so that the wind speed adjusting mechanism can be conveniently and reliably adjusted, and the operation reliability of the winnowing machine is improved.

Description

Technical Field

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

[0002] As a separation device for light and heavy materials, one of the key parameters of the air separator is the wind speed. By adjusting the wind speed, the air separator can be applied to different material separation environments. The wind speed can be adjusted by changing the size of the opening at the nozzle. How to make the wind speed adjustment mechanism realize convenient and reliable adjustment is a key issue that needs to be solved urgently. Utility Model Content

[0003] The utility model provides a wind speed regulating valve and an adjustable wind speed air duct, which solves the problems of the wind speed regulating mechanism of the current air separator being laborious, easy to get stuck, having a small regulating range, being unable to quantify the regulating amount and the flap deviation caused by long-term vibration.

[0004] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0005] A wind speed regulating valve, comprising:

[0006] Drive components;

[0007] The flap is transmission-connected to the driving assembly, and the driving assembly drives the flap to rotate in the air duct, so that the wind speed is adjusted by changing the opening area of ​​the air duct nozzle.

[0008] Optionally, the driving assembly comprises:

[0009] A lead screw, wherein an adjusting nut is provided at the end of the lead screw;

[0010] A transmission part fixedly connected to the lead screw flat wire; and

[0011] A connecting portion, the connecting portion is hingedly mounted on the transmission portion, and the flap is hingedly mounted on the connecting portion;

[0012] The lead screw provides a driving force along its axial direction, and the driving force causes the transmission part to reciprocate along the axial direction of the lead screw and drives the connection part to drive the flap to rotate.

[0013] Optionally, the transmission part includes:

[0014] Picks;

[0015] A transmission nut fixedly connected to the paddle, the transmission nut is fixedly connected to the lead screw flat wire, and under the driving force of the driving force, reciprocates together with the paddle along the axial direction of the lead screw.

[0016] Optionally, the connecting portion includes:

[0017] A bracket mounted on the first surface of the flap; and

[0018] A lever arm rotating shaft, wherein a first end of the lever arm rotating shaft is hingedly mounted to the paddle, and a second end of the lever arm rotating shaft is hingedly connected to the bracket.

[0019] Optionally, the paddle is provided with an oblong hole, and the extending direction of the oblong hole is perpendicular to the direction of the driving force;

[0020] The first end of the lever arm rotating shaft is hingedly installed in the oblong hole and moves in the oblong hole under the driving force of the driving force, driving the lever arm rotating shaft to perform circular motion around the axis of the flap.

[0021] Optionally, a circular hole is provided on the installation box, and the lead screw is installed in the circular hole and rotates in the circular hole.

[0022] Optionally, an opening is provided on the first surface of the installation box, and the first end of the lever arm rotation axis extends out of the opening; and a scale mark is provided on the edge of the opening.

[0023] Optionally, the radius length of the force arm rotation axis rotating along the axis of the flap is greater than the distance length from the center of gravity of the flap to the axis of the flap.

[0024] An adjustable wind speed type air duct, wherein at least one wind speed regulating valve is arranged in the air duct, and the wind speed regulating valve is the above-mentioned wind speed regulating valve.

[0025] Optionally, the longitudinal section of the air duct is rectangular.

[0026] The technical solution of the utility model includes at least the following effects:

[0027] The wind speed regulating valve of the utility model comprises: a driving assembly; a flap connected to the driving assembly, wherein the driving assembly drives the flap to rotate in the air duct, and the wind speed is regulated by changing the opening area of ​​the air duct nozzle. The technical solution of the utility model provides a combination of a screw drive and a connecting rod mechanism, so that the wind speed regulating mechanism can achieve convenient and reliable regulation, and improve the reliability of the operation of the air separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the wind speed regulating valve of the embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the wind speed regulating valve drive assembly of the embodiment of the utility model;

[0030] Figure 3 It is a three-dimensional structural schematic diagram of the transmission part of the wind speed regulating valve of the embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the installation of the wind speed regulating valve of the embodiment of the utility model;

[0032] Figure 5 This is a schematic diagram of the internal structure of the adjustable wind speed air duct of an embodiment of the utility model;

[0033] Among them, 1. screw; 2. transmission nut; 3. adjusting nut; 4. lever arm rotating shaft; 5. flap; 51. bracket; 6. air duct; 7. installation box; 8. oblong hole; 9. paddle. DETAILED DESCRIPTION

[0034] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the 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. On the contrary, 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 As shown, the wind speed regulating valve proposed in the embodiment of the utility model includes: a driving component; a flap 5 transmission-connected to the driving component, the driving component drives the flap 5 to rotate in the air duct 6, and the wind speed regulation is achieved by changing the area of ​​the nozzle opening of the air duct 6.

[0036] In this embodiment, the wind speed regulating valve is composed of a driving assembly and a flap 5, wherein the driving assembly is transmission-connected to the flap 5, driving the flap 5 to rotate in the air duct 6 to change the area of ​​the nozzle opening of the air duct 6 to achieve wind speed regulation.

[0037] The technical solution of the utility model provides a combination mode of a screw drive and a connecting rod mechanism, so that the wind speed regulating mechanism can be adjusted conveniently and reliably, thereby improving the reliability of the operation of the air separator.

[0038] like Figure 2 As shown, the wind speed regulating valve proposed in the embodiment of the utility model, the driving assembly includes: a screw 1, an adjusting nut 3 is provided at the end of the screw 1; a transmission part fixedly connected to the screw 1 by a flat wire; and a connecting part, the connecting part is hingedly installed on the transmission part, and the flap 5 is hingedly installed on the connecting part; wherein, the screw 1 provides a driving force along its axial direction, and the driving force causes the transmission part to reciprocate along the axial direction of the screw 1 and drives the connecting part to rotate the flap 5.

[0039] In this embodiment, the drive assembly consists of a screw 1, a flap 5, a transmission part and a connecting part; wherein the screw 1 is an elongated cylindrical shape, and a thread is provided on the surface along its axial direction; an adjusting nut 3 is provided at the end of the screw 1, and the adjusting nut 3 is matched with the flat wire at the end of the screw 1 and fixed with the end bolt, so that the screw 1 can rotate ±360° around its axis; the transmission part is fixedly connected with the flat wire of the screw 1, the connecting part is hingedly mounted on the transmission part, and the flap 5 is hingedly mounted on the connecting part; when a torque is applied to the adjusting nut 3 to rotate the screw 1, the screw 1 will provide a driving force along its axial direction, and the driving force causes the transmission part to reciprocate along the axial direction of the screw 1 and drives the connecting part to rotate the flap 5.

[0040] For example Figure 2 As shown, the wind speed regulating valve proposed in the embodiment of the utility model, the transmission part includes: a paddle 9; a transmission nut 2 fixedly connected to the paddle 9, the transmission nut 2 is fixedly connected to the screw 1 with a flat wire, and under the drive of the driving force, it reciprocates along the axial direction of the screw 1 together with the paddle 9.

[0041] In this embodiment, the transmission part is composed of a paddle 9 and a transmission nut 2; the paddle 9 and the transmission nut 2 are fixedly connected together by welding, and the transmission nut 2 is fixedly connected to the lead screw 1 by a flat wire; when a torque is applied to the adjusting nut 3 to rotate the lead screw 1, the transmission nut 2 and the paddle 9 together reciprocate along the axial direction of the lead screw 1 under the drive of the driving force.

[0042] like Figure 4 As shown, the wind speed regulating valve proposed in an embodiment of the utility model, the connecting part includes: a bracket 51 installed on the first surface of the flap 5; and a lever arm rotating shaft 4, the first end of the lever arm rotating shaft 4 is hingedly installed with the paddle 9, and the second end of the lever arm rotating shaft 4 is hingedly connected with the bracket 51.

[0043] In this embodiment, the connecting part is composed of a bracket 51 and a lever arm rotating shaft 4; wherein, the bracket 51 is fixedly connected to the first surface of the flap 5; the first end of the lever arm rotating shaft 4 is hingedly installed with the paddle 9, and the second end of the lever arm rotating shaft 4 is hingedly connected with the bracket 51; when the paddle 9 reciprocates along the axial direction of the screw 1, the paddle 9 will push the lever arm rotating shaft 4 to make circumferential motion along the axis of the flap 5, thereby completing the wind speed adjustment action.

[0044] like Figure 3As shown, the wind speed regulating valve proposed in the embodiment of the utility model, the paddle 9 is provided with an oblong hole 8, and the extension direction of the oblong hole 8 is perpendicular to the direction of the driving force; the first end of the lever arm rotating shaft 4 is hingedly installed in the oblong hole 8, and moves in the oblong hole 8 under the drive of the driving force, driving the lever arm rotating shaft 4 to make a circular motion around the axis of the flap 5.

[0045] In this embodiment, the paddle 9 is provided with an oblong hole 8, and the extension direction of the oblong hole 8 is perpendicular to the direction of the driving force generated by the rotation of the screw 1; the first end of the lever arm rotating shaft 4 is hingedly installed in the oblong hole 8; when the transmission nut 2 drives the paddle 9 to generate a thrust on the lever arm rotating shaft 4, the lever arm rotating shaft 4 will make a circular motion around the axis of the flap 5; at the same time, the lever arm rotating shaft 4 makes a reciprocating motion up and down in the oblong hole 8, thereby completing the wind speed adjustment action.

[0046] For example Figure 4 As shown, the wind speed regulating valve proposed in the embodiment of the utility model further includes: a mounting box 7, wherein the mounting box 7 is provided with a circular hole, and the lead screw 1 is mounted in the circular hole and rotates in the circular hole.

[0047] In this embodiment, a circular hole is provided on the mounting box 7, and the lead screw 1 is mounted in the circular hole and rotates in the circular hole; the mounting box 7 and the lever arm rotating shaft 4 have a limiting effect on the paddle 9 welded on the transmission nut 2, preventing the transmission nut 2 from flipping around the axis of the lead screw 1, and the nut 2 floats slightly around the lead screw 1 on the lead screw 1 due to the limiting gap reserved for the paddle 9 by the mounting box 7 and the lever arm rotating shaft 4; when the transmission nut 2 reciprocates along the axis of the lead screw 1, the jamming phenomenon between the paddle 9 and the mounting box 7 can be effectively avoided, thereby reducing the friction and ensuring the effectiveness and reliability of the transmission mechanism action.

[0048] like Figure 1 As shown, in the wind speed regulating valve proposed in the embodiment of the utility model, an opening is provided on the first surface of the installation box 7, and the first end of the lever arm rotating shaft 4 extends out from the opening; and a scale mark is provided on the edge of the opening.

[0049] In this embodiment, an opening is provided on the first surface of the installation box 7, and the first end of the lever arm rotating shaft 4 extends from the opening; the edge of the opening is provided with scale marks, which is convenient for quantitative adjustment parameters and provides accurate parameters for subsequent different sorting materials; observation holes are left on both sides of the installation box 7, which can be used to observe the transmission of the internal mechanism and add lubricating grease to ensure smooth rotation of the mechanism; the radius length of the lever arm rotating shaft 4 rotating along the axis of the flap 5 is greater than the distance length from the center of gravity of the flap 5 to the axis of the flap 5. According to the connecting rod lever arm principle, when adjusting the same load, the required adjustment force F will be proportionally smaller than the deadweight G of the flap 5 and the friction resistance f according to the ratio of the lever arm, that is, F = (G + f) · L1 / L2, where L2> L1, and the size of the adjustment force F can be adjusted by adjusting the ratio of L2 to L1; at the same time, the end of the lever arm rotating shaft 4 is provided with a thread and is threadedly connected to the nut. When the adjustment is completed, the nut can be tightened to lock the adjustment position to ensure that the adjustment amount will not change due to factors such as vibration, causing the failure of air selection.

[0050] like Figure 5 As shown, an embodiment of the utility model proposes an adjustable wind speed type air duct, wherein at least one wind speed regulating valve is provided in the air duct 6, and the wind speed regulating valve is the above-mentioned wind speed regulating valve, and the longitudinal section of the air duct 6 is square.

[0051] In this embodiment, a wind speed regulating valve is provided at the nozzle of the air duct 6, and the wind speed at the nozzle of the air duct 6 can be adjusted by the wind speed regulating valve to achieve the screening of materials of different qualities.

[0052] 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 of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A wind speed regulating valve, characterized in that: include: Drive components; A flap (5) is drivingly connected to the driving assembly, and the driving assembly drives the flap (5) to rotate in the air duct (6), thereby adjusting the wind speed by changing the area of ​​the nozzle opening of the air duct (6).

2. The wind speed regulating valve according to claim 1, characterized in that: The drive assembly comprises: A lead screw (1), wherein an adjusting nut (3) is provided at the end of the lead screw (1); A transmission part fixedly connected to the lead screw (1) with a flat wire; A connecting portion, the connecting portion is hingedly mounted on the transmission portion, and the flap (5) is hingedly mounted on the connecting portion; The lead screw (1) provides a driving force along its axial direction, and the driving force causes the transmission part to reciprocate along the axial direction of the lead screw (1) and drives the connecting part to drive the flap (5) to rotate.

3. The wind speed regulating valve according to claim 2, characterized in that: The transmission part comprises: Pick (9); A transmission nut (2) is fixedly connected to the paddle (9), the transmission nut (2) is fixedly connected to the lead screw (1) by a flat wire, and under the drive of the driving force, reciprocates together with the paddle (9) along the axial direction of the lead screw (1).

4. The wind speed regulating valve according to claim 3, characterized in that: The connecting portion comprises: A bracket (51) mounted on the first surface of the flap (5); A lever arm rotating shaft (4), wherein a first end of the lever arm rotating shaft (4) is hingedly mounted to the paddle (9), and a second end of the lever arm rotating shaft (4) is hingedly connected to the bracket (51).

5. The wind speed regulating valve according to claim 4, characterized in that: The paddle (9) 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 first end of the lever arm rotating shaft (4) is hingedly mounted in the oblong hole (8) and moves in the oblong hole (8) driven by the driving force, thereby driving the lever arm rotating shaft (4) to perform circular motion around the axis of the flap (5).

6. The wind speed regulating valve according to claim 5, characterized in that: Also includes: A mounting box (7), wherein a circular hole is provided on the mounting box (7), and the lead screw (1) is mounted in the circular hole and rotates in the circular hole.

7. The wind speed regulating valve according to claim 6, characterized in that: An opening is provided on the first surface of the installation box (7), and the first end of the force arm rotating shaft (4) extends out of the opening; and a scale mark is provided on the edge of the opening.

8. The wind speed regulating valve according to claim 7, characterized in that: The radius length of the force arm rotation axis (4) rotating along the axis of the flap (5) is greater than the distance length from the center of gravity of the flap (5) to the axis of the flap (5).

9. An adjustable wind speed air duct, characterized in that: At least one wind speed regulating valve is provided in the air duct (6), and the wind speed regulating valve is the wind speed regulating valve according to any one of claims 1 to 8.

10. The adjustable wind speed air duct according to claim 9, characterized in that: The longitudinal section of the air duct (6) is rectangular.

Images