An airflow compensation device for a grain air separator

Abstract

This utility model discloses an airflow compensation device for a grain air separator, including a first blower and a controller. A feeding conveyor, a second blower, and a separator are mounted on the frame of the air separator. The first blower is connected to the bottom side of the separator via a first air duct. The second blower is mounted on the frame on the side opposite to the separator. A second air duct is fixed at the bottom of the frame between the second blower and the separator. This utility model's air separator, in addition to the first blower, includes a second blower. The air blown by the second blower can have its effective airflow entering the separator changed by adjusting the angle of the guide vane. This increases the maximum airflow and thus expands the air separation range, allowing the separator to receive a wider range of airflow grades and achieving airflow compensation to meet more diverse grain air separation needs.

Description

Technical Field

[0001] This utility model relates to the field of grain air separator technology, specifically to an airflow compensation device for a grain air separator. Background Technology

[0002] A grain air separator is a piece of equipment used in grain processing, commonly used to remove impurities and grade grains. It utilizes the principle of wind resistance, taking into account the differences in wind resistance coefficients of different materials such as grains, bark, and sand, to separate light and heavy impurities using wind force, thus achieving the purpose of cleaning and grading.

[0003] Existing grain air separators only have one blower for blowing air, and the blower's speed can be adjusted within a certain range to provide a limited air separation range. However, with market changes, both domestic and imported grains are becoming increasingly diverse, with varying weights and moisture content. Consequently, processing requirements have also changed, causing the traditional grain air separator's air separation range to become insufficient and unable to handle the more complex and diverse grain air separation needs, thus requiring improvement. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an airflow compensation device for grain air separators, which solves the problem that traditional grain air separators have limited air separation range and are unable to cope with the increasingly diverse grain air separation needs.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: An airflow compensation device for a grain air separator includes a first blower and a controller for the air separator. A feeding conveyor, a second blower, and a separator are mounted on the frame of the air separator. The first blower and the controller are also mounted on the frame. A connecting pipe is connected between the upper end of the feeding conveyor and the separator. A feeding pipe is installed inside the connecting pipe. A weighing sensor is installed between the lower inner wall of the connecting pipe and the feeding pipe. The discharge pipe of the feeding conveyor is movably inserted into the upper end of the feeding pipe. The first blower is connected to the bottom side of the separator through the first air duct. The second blower is mounted on the frame on the side away from the separator. The bottom of the frame is fixed with a second air duct between the second blower and the separator. The air outlet of the second blower corresponds to the top of one end of the second air duct. The other end of the second air duct is connected to the bottom of the separator. The second blower has baffles fixed vertically on both the front and back of the air outlet pipe. Inside the baffle, on the top side near the second blower, a guide plate is movably hinged between the two baffles via a movable shaft. A connecting arm is fixed on the guide plate. An electric push rod is movably hinged to the air outlet pipe of the second blower and the connecting arm.

[0006] Preferably, a guide post is vertically fixed on the outer wall of the feeding pipe, and a guide sleeve that is slidably sleeved on the surface of the guide post is fixed on the inner wall of the connecting pipe.

[0007] Preferably, the weighing sensor is installed in the lower middle part of the feeding pipe, and the guide post is fixed on the front and back of the feeding pipe and located on both sides of the weighing sensor.

[0008] Preferably, the second air duct is a square tube, and the second air duct includes a straight tube in the middle and bent tubes at both ends connected to the separator and the second blower.

[0009] Preferably, the connecting arm is fixed to the middle of the upper surface of the guide plate, and the connecting arm is an arc-shaped rod with its center located on the movable shaft.

[0010] Preferably, the weighing sensor is electrically connected to the controller, and the controller is electrically connected to the first blower, the second blower, and the electric push rod, respectively.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This utility model's air separator incorporates a second blower in addition to a first blower. The air blown by the second blower can have its effective airflow entering the separator altered by adjusting the angle of the guide vane. This increases the maximum airflow and thus expands the air separation range, allowing the separator to receive a wider range of airflow grades. This achieves airflow compensation and adapts to more diverse grain air separation needs, solving the problem of traditional grain air separators having a limited air separation range, making it difficult to cope with increasingly diverse grain air separation requirements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the air separator of this utility model; Figure 2 This is a cross-sectional view of the second air duct of this utility model; Figure 3 This is a schematic diagram of the internal structure of the connecting pipe of this utility model; Figure 4 This is a schematic diagram of the control principle of this utility model.

[0013] In the diagram: 1. Air separator; 101. First blower; 102. Controller; 103. Frame; 104. Feeding conveyor; 1041. Discharge pipe; 105. Separator; 106. Connecting pipe; 107. First air duct; 2. Second blower; 201. Air outlet pipe; 3. Feeding pipe; 4. Weighing sensor; 5. Second air duct; 501. Straight pipe; 502. Bend; 6. Baffle; 7. Guide plate; 8. Connecting arm; 9. Electric push rod; 10. Guide column; 11. Guide sleeve. Detailed Implementation

[0014] 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.

[0015] like Figure 1-4 As shown, this utility model provides a technical solution: an airflow compensation device for a grain air separator, including a first blower 101 and a controller 102 of the air separator 1. A feeding conveyor 104, a second blower 2 and a separator 105 are installed on the frame 103 of the air separator 1. The first blower 101 is an adjustable frequency converter blower, and the second blower 2 is a small fixed frequency blower. The air volume is adjusted by changing the angle of the guide plate 7. Compared with frequency conversion adjustment, it can simplify the structure and extend the service life of the motor. The first blower 101 and the controller 102 are also installed on the frame 103. A connecting pipe 106 is connected between the upper end of the feeding conveyor 104 and the separator 105. A feeding pipe 3 is installed inside the connecting pipe 106. A guide post 10 is vertically fixed on the outer wall of the feeding pipe 3. A guide sleeve 11 is fixed on the inner wall of the connecting pipe 106 and is slidably sleeved on the surface of the guide post 10. This is used to movably install the feeding pipe 3 and limit its movement. A weighing sensor 4 is installed between the lower inner wall of the connecting pipe 106 and the feeding pipe 3. The weighing sensor 4 is installed in the lower middle part of the feeding pipe 3. The guide post 10 is fixed on the front and back of the feeding pipe 3 and located on both sides of the weighing sensor 4, so that the weighing sensor 4 receives the weight signal more evenly. The discharge pipe 1041 of the feeding conveyor 104 is movably inserted into the upper end of the feeding pipe 3. The first blower 101 is connected to the side bottom of the separator 105 through the first air duct 107. The second blower 2 is mounted on the frame 103 on the side of the first blower 101 away from the separator 105. The bottom of the frame 103 is fixed with a second air duct 5 between the second blower 2 and the separator 105. The air generated by the second blower 2 can be delivered to the separator 105 without occupying extra space. The outlet pipe 201 of the second blower 2 corresponds to the top position of one end of the second air duct 5. The other end of the second air duct 5 is connected to the bottom of the separator 105. The second air duct 5 is a square pipe, and the second air duct 5 includes a straight pipe 501 in the middle and bent pipes 502 at both ends connected to the separator 105 and the second blower 2. The air outlet pipe 201 of the second blower 2 is vertically fixed with baffles 6 on both the front and back. Inside the baffles 6, on the top side near the second blower 2, a guide plate 7 is movably hinged between the two baffles 6 via a movable shaft. A connecting arm 8 is fixed on the guide plate 7. The connecting arm 8 is fixed in the middle of the upper surface of the guide plate 7, and the connecting arm 8 is an arc-shaped rod with its center located on the movable shaft. An electric push rod 9 is movably hinged between the air outlet pipe 201 of the second blower 2 and the connecting arm 8. The weighing sensor 4 is electrically connected to the controller 102. The weighing sensor 4 is used to receive the weight of the conveyed grain and to set threshold parameter information for the controller 102 in advance according to the weight of the grain. The controller 102 is electrically connected to the first blower 101, the second blower 2 and the electric push rod 9 respectively. The controller 102 is a commercially available pre-made lower-level machine that can be directly edited and input parameters. According to the pre-set threshold parameters, the controller 102 selectively turns on the first blower 101 or simultaneously turns on the second blower 2 according to the level, and drives the extension distance of the electric push rod 9 according to the weight level, so that the angle of the guide plate 7 opens or closes proportionally, and adjusts the air volume sent into the separator 105.

[0016] Working principle: Grain is lifted by the feeding conveyor 104 and enters the separator 105 through the discharge pipe 1041, the feeding pipe 3, and the connecting pipe 106. When the grain enters the feeding pipe 3, it is weighed by the weighing sensor 4. The controller 102 turns on or off the first blower 101, the second blower 2, and the electric push rod 9 according to the weight of the grain and the pre-set threshold. When the grain is light, only the first blower 101 is turned on, and the air generated enters the separator 105 through the first air duct 107 to blow, classify, or remove impurities from the grain. When the grain is relatively heavy, the second blower 2 is turned on simultaneously. The air generated by the second blower 2 enters the separator 105 through the second air duct 5 under the action of the guide plate 7, increasing the air intake of the separator 105. The electric push rod 9 changes its retraction distance, which drives the guide plate 7 to change its opening angle, reducing the air volume entering the separator 105.

[0017] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airflow compensation device for a grain air separator, comprising a first blower (101) and a controller (102) for the air separator (1), characterized in that: The air separator (1) is equipped with a feeding conveyor (104), a second blower (2) and a separator (105) on its frame (103). The first blower (101) and the controller (102) are also installed on the frame (103). A connecting pipe (106) is connected between the upper end of the feeding conveyor (104) and the separator (105). A feeding pipe (3) is installed inside the connecting pipe (106). A weighing sensor (4) is installed between the lower inner wall of the connecting pipe (106) and the feeding pipe (3). The discharge pipe (1041) of the feeding conveyor (104) is movably inserted into the upper end of the feeding pipe (3). The first blower (101) is connected to the bottom side of the separator (105) through the first air duct (107). The second blower (2) is mounted on the frame (103) on the side away from the separator (105) of the first blower (101). The bottom of the frame (103) is fixed with a second air duct (5) between the second blower (2) and the separator (105). The air outlet pipe (201) of the second blower (2) corresponds to the top of one end of the second air duct (5). The other end of the second air duct (5) is connected to the bottom of the separator (105). The air outlet pipe (201) of the second blower (2) is vertically fixed with baffles (6) on both the front and back sides. Inside the baffle (6), a guide plate (7) located between the two baffles (6) is movably hinged to the top of the side of the baffle (6) near the second blower (2) via a movable shaft. A connecting arm (8) is fixed on the guide plate (7). An electric push rod (9) is movably hinged between the air outlet pipe (201) of the second blower (2) and the connecting arm (8).

2. The airflow compensation device for a grain air separator according to claim 1, characterized in that: A guide post (10) is vertically fixed on the outer wall of the feeding pipe (3), and a guide sleeve (11) that is slidably sleeved on the surface of the guide post (10) is fixed on the inner wall of the connecting pipe (106).

3. The airflow compensation device for a grain air separator according to claim 2, characterized in that: The weighing sensor (4) is installed in the lower middle part of the feeding pipe (3), and the guide post (10) is fixed on the front and back of the feeding pipe (3) and located on both sides of the weighing sensor (4).

4. The airflow compensation device for a grain air separator according to claim 1, characterized in that: The second air duct (5) is a square tube, and the second air duct (5) includes a straight tube (501) in the middle and bent tubes (502) at both ends connected to the separator (105) and the second blower (2).

5. The airflow compensation device for a grain air separator according to claim 1, characterized in that: The connecting arm (8) is fixed to the middle of the upper surface of the guide plate (7), and the connecting arm (8) is an arc-shaped rod with its center located on the movable shaft.

6. The airflow compensation device for a grain air separator according to claim 1, characterized in that: The weighing sensor (4) is electrically connected to the controller (102), and the controller (102) is electrically connected to the first blower (101), the second blower (2) and the electric push rod (9) respectively.

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