An air distributor with freely adjustable cross-sectional area

Abstract

This utility model discloses an air separator with an adjustable cross-sectional area, comprising an air separator housing, an inlet, and an adjustable back plate. By adding an adjustable back plate to the air separator housing, while keeping the original fan inverter parameters unchanged, the cross-sectional area of ​​the air separation zone can be changed by adjusting the back plate, thereby increasing or decreasing the airflow velocity in the air separation zone to achieve a better air separation effect. This approach balances the accuracy of debris removal with the stability of the air separation effect. Separating the debugging of debris removal and air separation effect reduces the difficulty of equipment debugging while ensuring equipment stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment, and in particular to an air distributor with an adjustable cross-sectional area. Background Technology

[0002] Currently known tobacco cleaning equipment uses air separators with non-adjustable cross-sectional areas. The airflow speed within the separator is adjusted by regulating the fan's frequency converter to ensure effective separation. However, in the cleaning machine field, once the debris recognition and rejection parameters are determined, adjusting the fan frequency converter would cause changes in the airflow speed in the debris recognition zone, requiring readjustment of the debris rejection parameters to match the existing speed. If the frequency converter parameters are not adjusted, while debris rejection accuracy is guaranteed, the airflow separation effect cannot be guaranteed. This air separator addresses this by adding a freely adjustable backplate. While maintaining the original fan frequency converter parameters, adjusting the backplate changes the cross-sectional area of ​​the airflow separation zone, thereby increasing or decreasing the airflow speed in each zone to achieve better separation. This approach balances the accuracy of debris rejection with the stability of the airflow separation effect. Separating the debugging of debris rejection and airflow separation reduces the difficulty of equipment debugging while ensuring equipment stability. Summary of the Invention

[0003] The problem this invention aims to solve is that, in the field of debris removal machines, once the debris identification and rejection parameters are determined, adjusting the fan frequency converter will cause a change in the wind speed in the debris identification zone, requiring readjustment of the debris rejection parameters to match the existing wind speed. If the frequency converter parameters are not adjusted, the accuracy of debris rejection is guaranteed, but the air separation effect cannot be guaranteed.

[0004] To solve the above problems, the present invention adopts the following solution: an air distributor with an adjustable cross-sectional area, characterized in that the air distributor includes an air distributor housing, a feed inlet, and an adjusting back plate; the air distributor housing is composed of a rear side plate, a front side plate, a right side plate, and a left side plate, which together form a hollow shell with vertically connected components, and the rear and front side plates gradually decrease in size near the outlet; the feed inlet is located on the front side plate; the adjusting back plate is composed of an upper hinge, an upper movable plate, a lower hinge, a lower movable plate, a lead screw limiting plate, a lead screw, a nut shaft, a handwheel, and a nut shaft fixing plate; the upper movable plate and The lower movable plate is located inside the air distributor housing. One end of the upper movable plate is connected to the rear side plate via an upper hinge, and the other end is connected to the lower movable plate via a lower hinge. The lead screw limiting plate is fixedly mounted on the lower movable plate. The lead screw limiting plate has a circular hole through which one end of the lead screw passes. A limiting block is provided at the end of the lead screw that passes through the circular hole. The diameter of the circular hole is larger than the diameter of the lead screw but smaller than the diameter of the limiting block. The other end of the lead screw passes through the rear side plate. The rear side plate has a matching through hole, and a nut shaft fixing plate is provided at a corresponding position on the rear side plate. The nut shaft is movably mounted on the nut shaft fixing plate and is threadedly connected to the lead screw. A handwheel is fixedly mounted at the end of the lead screw.

[0005] A limiting block is set at one end of the lead screw. After the other end of the lead screw passes through the lead screw limiting plate, the limiting block cannot pass through the lead screw limiting plate, so that the limiting block stays between the lead screw limiting plate and the lower movable plate. The diameter of the circular hole is larger than the diameter of the lead screw and smaller than the diameter of the limiting block, so that the lead screw can make a certain offset displacement within the circular hole, which facilitates the movement of the upper and lower movable plates.

[0006] Furthermore, the freely adjustable cross-sectional area air distributor is characterized in that the nut shaft includes a nut shaft body and a bolt, the nut shaft body has an internal threaded hole in the center that matches the lead screw, and mounting threaded holes at both ends that match the bolt; the nut shaft fixing plate has a U-shaped cross-section, and the nut shaft fixing plate has a through hole that matches the bolt, and the nut shaft is movably connected to the nut shaft fixing plate by the bolt.

[0007] The nut shaft is connected to the nut shaft fixing plate by bolts, and the nut shaft can rotate within a small range around the center of the bolts. With the help of the upper round hole, the upper movable plate can rotate around the hinge axis of the upper hinge, and the lower movable plate and the lower movable plate can rotate around the lower hinge. By turning the handwheel, the lead screw moves back and forth, thereby pushing the lower movable plate back and forth, arbitrarily changing the distance between the front side plate and the lower movable plate, thus changing the cross-sectional area of ​​the air compartment.

[0008] The technical effects of this utility model are as follows: In the field of tobacco impurity removal, this utility model adds a set of freely adjustable back plates to the air separator housing. While keeping the original fan frequency converter parameters unchanged, the cross-sectional area of ​​the air separation zone is changed by adjusting the back plates, thereby increasing and decreasing the airflow velocity in the air separation zone to obtain a better air separation effect. This not only takes into account the accuracy of impurity removal but also ensures the stability of the air separation effect. By adjusting impurity removal and air separation effect separately, the difficulty of equipment debugging is reduced, while ensuring equipment stability. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a three-dimensional view of the overall structure of this utility model.

[0011] Figure 3 This is a schematic diagram of the adjustable backplate structure of this utility model.

[0012] In the diagram: 1-Air distributor housing; 2-Inlet; 3-Adjusting back plate; 4-Rear side plate; 5-Front side plate; 6-Right side plate; 7-Left side plate; 8-Nut shaft fixing plate; 9-Upper hinge; 10-Upper movable plate; 11-Lower hinge; 12-Lower movable plate; 13-Screw limit plate; 14-Screw; 15-Nut shaft; 16-Handwheel. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] like Figure 1 , 2 As shown in Figure 3, an air distributor with an adjustable cross-sectional area includes an air distributor housing 1, an inlet 2, and an adjusting back plate 3; Figure 2 As shown, the air distributor housing 1 mainly consists of a rear side plate 4, a front side plate 5, a right side plate 6, a left side plate 7, and a nut shaft fixing plate 8. The rear side plate 4, front side plate 5, right side plate 6, and left side plate 7 form a hollow housing that is connected vertically. The rear side plate 4 and front side plate 5 gradually decrease in size near the outlet. The nut shaft fixing plate 8 is welded to the rear side plate 4. Figure 3 As shown, the adjusting back plate 3 mainly consists of an upper hinge 9, an upper movable plate 10, a lower hinge 11, a lower movable plate 12, a lead screw limiting plate 13, a lead screw 14, a nut shaft 15, and a handwheel 16. The upper hinge 9 is connected to the rear side plate 4 at the top and to the upper movable plate 10 at the bottom. The upper movable plate 10 is connected to the lower hinge 11 at the bottom, and the lower hinge 11 is connected to the lower movable plate 12 at the bottom. The lead screw limiting plate 13 is connected to the lower movable plate 12. The lead screw 14 passes through the upper round hole of the lead screw limiting plate 13 and also passes through the nut shaft 15. One end of the lead screw 14 is connected to the handwheel 16.

[0015] like Figure 1 The airflow shown passes from bottom to top through the air separator housing 1. The tobacco leaves enter the air separator housing 1 through the feed inlet 2. The airflow moves upward in the hollow structure formed by the front side plate 5, the right side plate 6, the left side plate 7, and the adjusting back plate 3. When the wind speed is low and the tobacco leaves cannot be effectively sent upward, the handwheel 16 can be adjusted to move the screw 14 forward, thereby pushing the adjusting back plate 3 forward, reducing the distance between the front side plate 5 and the adjusting back plate 3, that is, reducing the cross-sectional area of ​​the air section, increasing the wind speed, and the tobacco leaves can be effectively sent out. When the wind speed is too high and you want to reduce the wind speed, adjust the handwheel 16 to move the screw 14 backward, thereby pushing the adjusting back plate 3 backward, increasing the distance between the front side plate 5 and the adjusting back plate 3, that is, increasing the cross-sectional area of ​​the air section, and reducing the wind speed of the air section.

Claims

1. A wind distributor with freely adjustable cross-sectional area, characterized in that, The air distributor comprises an air distributor shell (1), a feeding port (2) and an adjusting back plate (3); the air distributor shell (1) is composed of a rear side plate (4), a front side plate (5), a right side plate (6) and a left side plate (7), the rear side plate (4), the front side plate (5), the right side plate (6) and the left side plate (7) form a hollow shell in communication from top to bottom, and the rear side plate (4) and the front side plate (5) gradually become smaller near the outlet; the feeding port (2) is arranged on the front side plate (5); the adjusting back plate (3) is composed of an upper hinge (9), an upper movable plate (10), a lower hinge (11), a lower movable plate (12), a lead screw limiting plate (13), a lead screw (14), a nut shaft (15), a hand wheel (16) and a nut shaft fixing plate (8); the upper movable plate (10) and the lower movable plate (12) are arranged inside the air distributor shell (1), one end of the upper movable plate (10) is connected with the rear side plate (4) through the upper hinge (9), and the other end is connected with the lower movable plate (12) through the lower hinge (11); the lead screw limiting plate (13) is fixedly arranged on the lower movable plate (12), the lead screw limiting plate (13) is provided with a circular hole, one end of the lead screw (14) penetrates through the circular hole, and the end of the lead screw (14) penetrating through the circular hole is provided with a limiting block, the diameter of the circular hole is greater than the diameter of the lead screw (14) and less than the diameter of the limiting block, the other end of the lead screw (14) penetrates through the rear side plate (4), the rear side plate (4) is provided with a matching through hole, and the corresponding position of the rear side plate (4) is provided with the nut shaft fixing plate (8); the nut shaft (15) is movably arranged on the nut shaft fixing plate (8), and the nut shaft (15) is threadedly connected with the lead screw (14), and the hand wheel (16) is fixedly arranged at the end of the lead screw (14).

2. The variable area wind divider of claim 1, wherein, The nut shaft (15) comprises a nut shaft body and a bolt, the central part of the nut shaft body is provided with an inner threaded hole matched with the lead screw (14), and the two ends are provided with mounting threaded holes matched with the bolt; the cross section of the nut shaft fixing plate (8) is in a U-shaped structure, the nut shaft fixing plate (8) is provided with a through hole matched with the bolt, and the nut shaft (15) is movably connected with the nut shaft fixing plate (8) through the bolt.

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