Air volume adjusting mechanism of a flour purifier

Abstract

The utility model discloses a kind of powder cleaning machine air volume regulating mechanisms, including two groups of air chamber air ducts of relative symmetry arrangement, one total air duct is connected above two groups of air chamber air ducts, two groups of air chamber air ducts share an intermediate side wall, air chamber air is rotationally connected with adjusting plate in, total air duct is also provided with adjusting structure, adjusting structure includes upper movable plate and lower fixed plate distributed in upper and lower, a plurality of strip-shaped ventilation gaps are set on upper movable plate, lower fixed plate, upper movable plate moves in horizontal direction relative to lower fixed plate, the coincident area of upper and lower ventilation gaps is used to control ventilation amount. The utility model adds the structure for adjusting air volume on the total air duct above two groups of air chamber air ducts, increases the selectivity of air volume regulation, improves the convenience of air volume regulation, and the overall structure also guarantees the stability of air volume regulation.

Description

Technical Field

[0001] This utility model relates to the field of powder cleaning machine technology, and specifically to a powder cleaning machine air volume adjustment mechanism. Background Technology

[0002] A grain cleaning machine is a type of grain processing machinery, consisting of a single screen body equipped with double-layered screens or a double screen body equipped with double or triple-layered screens, along with air ducts and air chambers. Existing grain cleaning machines generally have adjustment devices on their air ducts to adapt to different materials by controlling the airflow. In the prior art, utility model patent application number 201820818650.0 discloses an airflow regulating box damper adjustment mechanism for a grain cleaning machine, which adjusts the airflow by setting adjustment plates on two sets of main air ducts. However, this adjustment method requires separate control of the rotation of the adjustment plate in each set of air ducts, and a combined air duct is also arranged above the two sets of main air ducts. This results in redundant and inaccurate operations when adjusting two sets of adjustment plates simultaneously. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a cleaning machine airflow regulating mechanism that allows for selective adjustment of the regulating plate and ensures stable airflow regulation.

[0004] To achieve the above objectives, the present invention provides a powder cleaning machine airflow adjustment mechanism, which adopts the following technical solution:

[0005] A powder cleaning machine air volume regulating mechanism includes two sets of symmetrically arranged air chambers and air ducts, which are connected to a common air duct above each other. The two sets of air chambers and air ducts share a common middle sidewall. An regulating plate is rotatably connected inside each air chamber. An regulating structure is also provided in the common air duct. The regulating structure includes an upper movable plate and a lower fixed plate distributed vertically. Several elongated ventilation notches are opened on the upper movable plate and the lower fixed plate. The upper movable plate moves horizontally relative to the lower fixed plate. The overlapping area of ​​the upper and lower ventilation notches is used to control the ventilation volume.

[0006] A further improvement of the air volume adjustment mechanism for a powder cleaning machine of this utility model is that a connecting plate is provided downward at the middle of the lower end of the lower fixed plate, and a groove is provided upward at the middle of the lower end surface of the connecting plate, and the middle side wall is inserted into the groove.

[0007] A further improvement of the air volume adjustment mechanism for a powder cleaning machine of this utility model is that a horizontal limiting groove is provided at the front and rear ends of the upper end of the lower fixed plate, and a horizontal limiting block is provided at the front and rear ends of the lower end of the upper movable plate. The limiting block is inserted into the limiting groove and slides in the limiting groove.

[0008] A further improvement of the air volume adjustment mechanism for a powder cleaning machine of this utility model is that a fixed notch is provided on the front and rear side walls of the air chamber duct, an H-shaped positioning plate is provided at the fixed notch, and threaded holes are provided on the positioning plate and the upper movable plate, with bolts provided at the threaded holes.

[0009] A further improvement of the air volume adjustment mechanism for a powder cleaning machine of this utility model is that an elastic pad is provided between the positioning plate and the side wall of the air duct of the air chamber.

[0010] A further improvement of the air volume adjustment mechanism for a powder cleaning machine of this utility model is that a connecting rod is provided between the front and rear positioning plates.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention adds a structure for adjusting air volume to the main air duct above the two sets of air chambers, which increases the selectivity of air volume adjustment, improves the convenience of air volume adjustment, and the overall structure also ensures the stability of air volume adjustment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] In the diagram: 1. Air chamber duct, 2. Main air duct, 3. Adjusting plate, 4. Lower fixed plate, 5. Upper movable plate, 6. Connecting plate, 7. Positioning plate, 8. Bolt, 9. Middle side wall. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 and Figure 2As shown, a powder cleaning machine airflow regulating mechanism includes two sets of symmetrically arranged air chambers and ducts 1, with a common main air duct 2 above the two sets of air chambers and ducts. The two sets of air chambers and ducts share a common intermediate sidewall 9. An adjusting plate 3 is rotatably connected inside the air chamber. The rotating shaft of the adjusting plate extends out of the air chamber and duct and is connected to a handle. The above structure is an existing structure. Furthermore, an adjusting structure is also provided in the main air duct. The adjusting structure includes an upper movable plate 5 and a lower fixed plate 4 distributed vertically. Several elongated ventilation notches are opened on the upper movable plate and the lower fixed plate. The upper movable plate moves horizontally relative to the lower fixed plate, and the overlapping area of ​​the upper and lower ventilation notches is used to control the ventilation volume.

[0018] Furthermore, a connecting plate 6 is provided at the lower center of the lower fixed plate, and a groove is provided at the center of the lower end of the connecting plate, with the middle side wall inserted into the groove.

[0019] Furthermore, the lower fixed plate has transverse limiting grooves (not shown in the figure) at both ends of its upper front end, and transverse limiting blocks at both ends of its lower front end. The limiting blocks are inserted into the limiting grooves and slide within them. The design of the limiting grooves and limiting blocks ensures the stability of the relative movement of the upper movable plate and the lower fixed plate.

[0020] Furthermore, fixed notches are provided on the front and rear side walls of the air chamber duct, and H-shaped positioning plates 7 are provided at the fixed notches. Threaded holes are provided on the positioning plates and the upper movable plate, and bolts 8 are provided at the threaded holes. The upper movable plate can be moved by moving the positioning plates, thereby realizing the adjustment of air volume.

[0021] Furthermore, an elastic pad is provided between the positioning plate and the side wall of the air duct of the air chamber. The elastic pad is designed to prevent material impurities from spilling out from the opening.

[0022] A connecting rod (not shown in the figure) is provided between the front and rear positioning plates. The connecting rod is preferably C-shaped to facilitate the movement of the upper movable plate. The connecting rod can be connected to a horizontally arranged telescopic cylinder in the horizontal direction to achieve mechanized adjustment.

[0023] The working principle of this utility model is as follows: when the air volume needs to be adjusted, the telescopic cylinder works, which drives the positioning plate, i.e. the upper movable plate, to move. The air volume is adjusted by overlapping the ventilation gap of the lower fixed plate. Alternatively, the adjustment plate can be selected for adjustment. Overall, the adjustment options are increased and the adjustment action is convenient.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A powder cleaning machine air volume adjustment mechanism, characterized in that, It includes two sets of symmetrically arranged air chambers and air ducts, which are connected to a common air duct above them. The two sets of air chambers and air ducts share a common middle sidewall. An adjusting plate is rotatably connected inside each air chamber. An adjusting structure is also provided in the common air duct. The adjusting structure includes an upper movable plate and a lower fixed plate distributed vertically. Several elongated ventilation notches are opened on the upper movable plate and the lower fixed plate. The upper movable plate moves horizontally relative to the lower fixed plate. The overlapping area of ​​the upper and lower ventilation notches is used to control the ventilation volume.

2. The air volume regulating mechanism for a powder cleaning machine according to claim 1, characterized in that, The lower fixing plate has a connecting plate at the lower center, and the connecting plate has a groove at the lower center, into which the middle sidewall is inserted.

3. The air volume regulating mechanism for a powder cleaning machine according to claim 2, characterized in that, The upper front and rear ends of the lower fixed plate are provided with horizontal limiting grooves, and the lower front and rear ends of the upper movable plate are provided with horizontal limiting blocks. The limiting blocks are inserted into the limiting grooves and slide within the limiting grooves.

4. The air volume regulating mechanism for a powder cleaning machine according to claim 3, characterized in that, The air chamber duct has fixed notches on its front and rear side walls. H-shaped positioning plates are provided at the fixed notches. Threaded holes are provided on the positioning plates and the upper movable plate. Bolts are provided at the threaded holes.

5. The air volume regulating mechanism for a powder cleaning machine according to claim 4, characterized in that, An elastic pad is provided between the positioning plate and the side wall of the air duct of the air chamber.

6. The air volume regulating mechanism for a powder cleaning machine according to claim 5, characterized in that, A connecting rod is provided between the front and rear positioning plates.

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