Winnowing air duct structure with adjustable section
By introducing an air duct structure with adjustable cross-section into the air separation equipment, the problem of wind speed mismatch when the air separation equipment is faced with different materials is solved, and the adaptability of the equipment and the stability of the system are improved.
Patent Information
- Application Number
- CN202520043726.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2035-01-09
AI Technical Summary
When faced with different batches of materials, existing air separation equipment is difficult to achieve effective separation through a fixed wind speed, and adjusting the system flow will affect the normal use of other equipment.
The air separation duct structure with adjustable cross-section is adopted. By setting a regulating body and a driving mechanism in the air duct, the cross-sectional area of the air duct can be adjusted to meet the air separation requirements of different materials.
The high adaptability and flexibility of the air separation equipment are achieved, which avoids the impact on other equipment in the system and maintains the stability and efficiency of the system.
Smart Images
Figure CN223465124U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wind speed control technical field especially points to a kind of adjustable section's winnowing air duct structure. BACKGROUND
[0002] In the product production process of granular material or powder material as raw material, the application of winnowing equipment is very extensive, and the principle of winnowing equipment is generally to change the flow velocity of material airflow to separate different density materials in different wind speed, and then separate the separated materials by special air duct structure to achieve the effect of separating rejected materials. The most common means to change wind speed is to change the size of the cross-sectional area of the air pipe.
[0003] However, in actual use, due to the difference of the conveyed materials, the same set of equipment often needs to winnow different materials. When the shape, size and density of the incoming material change, a constant wind speed may not be able to achieve good winnowing results, and adjusting the flow of the entire system may affect the normal use of other equipment in the system. INVENTION CONTENTS
[0004] The utility model aims at providing a kind of adjustable section's winnowing air duct structure, the cross-sectional area of the air duct needed for winnowing is adjusted, so that the wind speed through the air duct meets the parameter requirements of winnowing, to avoid adjusting the flow of the entire system.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of adjustable section's winnowing air duct structure, including adjusting body arranged in air duct and drive mechanism for driving adjusting body to move and installed on air duct, the drive mechanism can make adjusting body move position in air duct to adjust the cross-sectional area of air duct.
[0006] Preferably, the top of the air duct is provided with an adjusting port, the periphery of the adjusting port is surrounded by the inner wall of the air duct and the sealing plate, the adjusting body includes an adjusting box arranged in the adjusting port and matched with the internal shape of the adjusting port, the bottom and periphery of the adjusting box are closed, and the adjusting box can move up and down in the adjusting port to change the volume of the adjusting box extending downward from the adjusting port.
[0007] More preferably, the drive mechanism includes a fixed plate installed at the top end of the adjusting port, a screw rod rotatably penetrating the fixed plate, and a hand wheel connected to the top end of the screw rod, the fixed plate is provided with a limiting structure for limiting the axial movement of the screw rod, the top of the adjusting box is fixedly connected with a nut seat, and the rod portion of the screw rod penetrates downward through the nut seat and is threadedly connected with the nut in the nut seat.
[0008] More preferably, a sealing ring is further arranged between the adjusting box and the inner wall of the adjusting port.
[0009] More preferably, the adjusting box is a rectangular box body.
[0010] Compared with the prior art, the utility model discloses a adjusting body is arranged in the air duct, and the position of adjusting body is moved to directly change the section area of air duct, so that the wind speed of the air duct is suitable for the winnowing parameter requirement of different batches of materials, and the flow of the whole system does not need to be adjusted, not only improve the adaptability and flexibility of winnowing equipment, can also avoid the influence of flow adjustment to other equipment in the system, keep the stability and reliability of system. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is the whole structure schematic diagram in the embodiment.
[0012] In the drawing:
[0013] 1 - air duct 2 - adjusting box 3 - fixed plate
[0014] 4 - screw rod 5 - hand wheel 6 - sealing ring
[0015] 7 - material outlet 8 - nut seat. DETAILED DESCRIPTION
[0016] In order to facilitate the understanding of those skilled in the art, the utility model will be further explained below in combination with embodiments and drawings, and the content mentioned in the embodiment is not a limitation to the utility model.
[0017] It needs to be explained in advance that in the utility model, unless there is definite provision and limitation, the terms such as "installation", "connection", "fixed", etc. should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances. In addition, in the utility model, unless there is definite provision and limitation, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them.
[0018] As Figure 1 Shown, the winnowing air duct structure of adjustable section area includes the adjusting body arranged in the air duct 1 and the driving mechanism installed on the air duct 1 and used to drive the adjusting body to move, and the driving mechanism can make the adjusting body move position in the air duct 1 to adjust the section area of air duct.
[0019] In the above structure, the top of the air duct 1 is provided with an adjusting opening, the periphery of the adjusting opening is surrounded by the inner wall of the air duct 1 and the sealing plate, the adjusting body comprises an adjusting box 2 arranged in the adjusting opening and matched with the inner shape of the adjusting opening, the bottom and the periphery of the adjusting box 2 are closed, and the adjusting box 2 can move up and down in the adjusting opening, so as to change the volume of the adjusting box 2 extending downward from the adjusting opening. The closed design of the adjusting box 2 ensures that the material will not leak during the adjustment, and the design of moving up and down in the adjusting opening directly changes the effective cross-sectional area of the air duct 1, so as to accurately control the wind speed and optimize the winnowing effect. According to Q=SV=constant, in the same pipeline, the cross-sectional area of the air duct and the wind speed are inversely proportional, and the relationship between the scale value of the adjustment and the wind speed can be obtained, so that the size of the wind speed required by the working condition can be accurately adjusted.
[0020] In addition, the driving mechanism in the embodiment comprises a fixed plate 3 installed at the top end of the adjusting opening, a screw rod 4 rotatably penetrating the fixed plate 3, and a hand wheel 5 connected to the top end of the screw rod 4. The fixed plate 3 is provided with a limiting structure for limiting the axial movement of the screw rod 4. The top of the adjusting box 2 is fixedly connected with a nut seat 8, and the rod portion of the screw rod 4 penetrates downward through the nut seat 8 and is threadedly connected with the nut in the nut seat 8. The driving mechanism provides a simple and effective mechanical transmission mode through the cooperation of the screw rod 4 and the hand wheel 5, so that the movement of the adjusting body becomes easy to operate, and the convenience of adjustment is improved.
[0021] In order to ensure the air tightness, a sealing ring 6 is further arranged between the adjusting box 2 and the inner wall of the adjusting opening, and the sealing ring 6 is fixed to the outer periphery of the adjusting box 2, so as to ensure the sealing property of the air duct 1 during the adjustment process, prevent unnecessary loss of wind speed and leakage of material, and improve the efficiency and safety of the winnowing equipment.
[0022] The adjusting box 2 in the embodiment is a rectangular box body, which simplifies the manufacturing and maintenance process, and the rectangular structure provides a larger adjustment range and better stability, so that the adjustment of the cross-sectional area of the air duct is more flexible and effective.
[0023] In specific application, a material outlet 7 for removing material can be arranged at the bottom of the front side air duct 1 of the adjusting box as shown in the figure. Figure 1 When the material enters this area along with the airflow, the material to be removed can directly fall out of the material outlet, and the remaining material can continue to flow along with the airflow (for example, part of the dust in the airflow). When facing different batches of materials, the flow rate of the winnowing air duct needs to be adjusted to achieve the required flow rate for accurate winnowing, at this time the hand wheel 5 can be manually rotated to drive the adjusting box 2 to move up and down, so as to quickly change the cross-sectional area of the air duct, and thus the flow rate can be adjusted.
[0024] The utility model solves the problem that the size structure of winnowing device does not match due to the change of wind force parameter in the production or manufacture of pipeline in the system of wind force delivery, it can be applied in the occasion that various specific pipeline sections need specific wind speed, it greatly increases the adaptability of wind force delivery of pipeline in each key occasion, avoids the change of wind force parameter to need important more adjustment pipeline components, saves the production manufacturing cost. Meanwhile, the wind speed of specific pipeline section in the wind force system can also be accurately fine adjusted, so that the product quality is better improved.
[0025] In order to make the ordinary skilled in the art more conveniently understand the improvement of the utility model relative to the prior art, some drawings and descriptions of the utility model have been simplified, and the above-mentioned embodiments are the preferred implementation of the utility model, in addition to this, the utility model can also be realized in other ways, any obvious replacement without departing from the technical solution concept is within the protection scope of the utility model.
Claims
1. An air classification air duct structure of adjustable cross section, characterized by: The adjusting body is arranged in the air duct (1), and a driving mechanism is arranged on the air duct (1) and used for driving the adjusting body to move, so that the adjusting body can move in the air duct (1) to adjust the sectional area of the air duct.
2. The cross-section adjustable winnowing air channel structure according to claim 1, characterized in that: The air duct (1) is provided with an adjusting opening at the top, and the adjusting opening is surrounded by the inner wall of the air duct (1) and a sealing plate. The adjusting body comprises an adjusting box (2) arranged in the adjusting opening and matched with the inner shape of the adjusting opening. The bottom and the periphery of the adjusting box (2) are closed. The adjusting box (2) can move up and down in the adjusting opening, so as to change the volume of the adjusting box (2) extending downward from the adjusting opening.
3. The cross-section adjustable winnowing air channel structure according to claim 2, characterized in that: The driving mechanism comprises a fixed plate (3) arranged at the top of the adjusting opening, a screw rod (4) rotatably arranged in the fixed plate (3), and a hand wheel (5) connected to the top end of the screw rod (4). The fixed plate (3) is provided with a limiting structure for limiting the axial movement of the screw rod (4). The top of the adjusting box (2) is fixedly connected with a nut seat (8). The rod of the screw rod (4) passes downward through the nut seat (8) and is threadedly connected with the nut in the nut seat (8).
4. The cross-section adjustable winnowing air channel structure according to claim 3, characterized in that: A sealing ring (6) is further arranged between the adjusting box (2) and the inner wall of the adjusting opening. The sealing ring (6) is fixed to the outer periphery of the adjusting box (2).
5. The cross-section adjustable winnowing air channel structure according to claim 4, characterized in that: The adjusting box (2) is a rectangular box body.