Air suction type material cleaning mechanism

Abstract

The application discloses a kind of air suction type material cleaning mechanism, it includes machine base, the machine base is equipped with screen body and is placed in the air suction device above screen body, the screen body is driven to reciprocating vibration by vibrating mechanism;The air suction device includes the main air box with air outlet, the main air box has air blast fan inside;The air suction device also has a plurality of suction ports;Two sides of the air blast fan each has suction box with its internal space communication, two the suction box is arranged along the vibration direction of the screen body before and after;The lower side of each suction box has the suction port, and the upper side of each suction box has air pressure regulating mechanism.The material in the application can pass through two suction ports to carry out two air suction operations when moving along the screen body, by respectively adjusting each air pressure regulating mechanism, the air pressure of each suction port can be adjusted, the pertinence of two air suction operations can be different, so light impurities in material can be fully sucked away, effectively cleaning material is realized.

Description

Technical Field

[0001] This invention relates to the field of agricultural material cleaning technology, and in particular to a pneumatic suction material cleaning mechanism. Background Technology

[0002] After harvesting, agricultural materials often contain impurities such as straw and leaves. These impurities not only affect the quality of the materials but also interfere with subsequent processing. To improve the purity of the materials and processing efficiency, these impurities need to be removed. Current technologies generally utilize the suction force of airflow to remove impurities from the materials, thus purifying them. Air suction cleaning is not only simple to operate but also highly efficient, capable of processing large quantities of materials in a short time. It is suitable for various agricultural materials, such as grains, peanut pods, and beans, effectively improving the processing quality of agricultural products. Furthermore, the application of air suction cleaning technology helps reduce material losses during processing and improves resource utilization.

[0003] In the prior art, patent CN 103688685 A discloses a typical pneumatic impurity removal device for peanut cleaning machines, which has a fan and a suction pipe connected to the fan. The fan operates to suck up impurities from the material through the suction pipe. This device can only perform one pneumatic impurity removal operation. When multiple impurity removal operations are required, multiple sets of the above-mentioned impurity removal devices need to be installed, occupying a significant amount of installation space. Alternatively, some solutions connect multiple suction pipes in series with the same fan to achieve multiple pneumatic impurity removal operations. This solution still has a large structural volume, and the suction force of each suction pipe is uniform, resulting in a lack of hierarchical impurity removal and generally poor impurity removal efficiency. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a compact air suction material cleaning mechanism that can perform multiple targeted air suction operations on materials.

[0005] Technical solution: To achieve the above objectives, the present invention provides a pneumatic material cleaning mechanism, which includes a base, on which a screen body and a pneumatic suction device are mounted, wherein the screen body is driven by a vibration mechanism to reciprocate, so that the material on it moves longitudinally; the pneumatic suction device includes a main air box with an air outlet, and a blower fan is provided inside the main air box; the pneumatic suction device also has multiple air inlets.

[0006] The blower fan has an air intake box on each side that communicates with its internal space, and the two air intake boxes are arranged back and forth along the vibration direction of the screen body.

[0007] Each of the air intake boxes has an air intake port on its lower side, and each of the air intake boxes has a wind pressure adjustment mechanism on its upper side, which can adjust the air intake wind pressure of its corresponding air intake port.

[0008] By setting wind pressure regulating mechanisms for the two air intake boxes, the wind pressure of the two air intakes can be controlled separately by the two wind pressure regulating mechanisms when the speed of the blower fan is fixed. This results in different wind pressures between the two air intakes. For example, the wind pressure of the first air intake can be greater than that of the second air intake, so that easily removed light impurities are sucked away first, while the more difficult-to-suck light impurities are sucked away at the second air intake.

[0009] Furthermore, the wind pressure regulating mechanism includes a cover that can be rotatably opened and closed relative to the air intake box, and also includes an adjusting rod; one end of the adjusting rod is rotatably connected to the cover, and the adjusting rod can be adjusted in position relative to the main air box, and a spring acting on the cover is threaded on the adjusting rod.

[0010] Furthermore, a connecting frame is fixed on the main air box, and the connecting frame has a strip-shaped hole through which the adjusting rod passes; the spring is placed between the connecting frame and the cover, and makes the two tend to move away from each other; the adjusting rod has a plurality of through holes arranged in a linear array, and a pin inserted into one of the through holes limits the maximum distance between the connecting frame and the cover, which is the distance in the length direction of the adjusting rod. Under normal conditions, the spring makes the pin rest against the connecting frame.

[0011] Furthermore, the screen body is connected to the base by four parallel connecting rods, which are arranged in two pairs on both sides of the air suction device. This allows the screen body to remain horizontal and move along an arc trajectory to throw the material onto it, causing the material to move from front to back on the screen body while simultaneously removing impurities whose particle size matches the screen aperture size.

[0012] Furthermore, the vibration mechanism is located at the bottom of the screen body and includes a drive wheel and a drive rod. The two ends of the drive rod are respectively hinged to the drive wheel and the screen body. The rotation of the drive wheel enables the screen body to swing asymmetrically through the drive rod, thereby achieving a throwing motion of the material and causing the material to move forward on the screen body.

[0013] Furthermore, a motor and a transition shaft are respectively installed on both sides of the machine base; the motor establishes a transmission relationship with the fan shaft of the blower fan through a first transmission structure; the fan shaft and the transition shaft establish a transmission relationship through a second transmission mechanism; the transition shaft and the drive wheel establish a transmission relationship through a third transmission mechanism. In this solution, the first transmission structure, the second transmission mechanism, and the third transmission mechanism are all belt drive mechanisms; and both the first transmission structure and the second transmission mechanism have a speed reduction function, which can reduce the speed to drive the target component to operate. In addition, the transition shaft is longitudinally arranged, and there is a transverse transmission shaft below the screen body; the drive wheel is located at one end of the transmission shaft, the third transmission mechanism is connected to the other end of the transmission shaft, and the transmission belt of the third transmission mechanism is in a torsional state.

[0014] Furthermore, an adjustable pipe section capable of raising and lowering to adjust its position is installed on the lower side of the air intake box.

[0015] Furthermore, to enable position adjustment of the adjustable tube section, a screw is installed at the lower end of the intake box, and the adjustable tube section has a slot through which the screw passes. When the position of the adjustable tube section needs to be adjusted, the screw can be loosened, the adjustable tube section adjusted into place, and then the screw tightened to fix the adjustable tube section.

[0016] Beneficial effects: The air suction material cleaning mechanism of the present invention has the following beneficial effects:

[0017] (1) By setting suction boxes on both sides of the main air box, the overall layout of the air suction device is compact. The main air box separates the two suction boxes, allowing the material to undergo two suction operations through the two suction ports as it moves along the screen body, and the material can be fully turned over between the two suction operations. The air pressure of each suction port can be adjusted by adjusting each air pressure adjustment mechanism, so that the air pressure of the two suction ports is different. This allows the two suction operations to be targeted differently, thus effectively removing light impurities from the material and achieving effective cleaning of the material.

[0018] (2) By changing the through hole into which the pin is inserted, the minimum opening angle of the cover can be changed. And because the adjusting rod can slide elastically relative to the connecting frame, the cover can adaptively change the opening angle as needed during operation, thereby achieving adaptive adjustment of the air pressure at the air inlet.

[0019] (3) The transmission structure is designed and laid out in a compact manner, so that the air suction device and the screen body are driven by the same motor. This not only saves costs, but also makes the vibration frequency of the screen body and the speed of the blower fan compatible and easy to control. Attached Figure Description

[0020] Figure 1 This is a front view of a pneumatic material cleaning mechanism.

[0021] Figure 2 This is a side view of the air-suction material cleaning mechanism;

[0022] Figure 3 This is a three-dimensional view of a pneumatic material cleaning mechanism.

[0023] Figure 4 This is a structural diagram of the air suction device;

[0024] Figure 5 for Figure 4 Enlarged structural diagram of section A;

[0025] Figure 6 for Figure 4 Enlarged structural diagram of section B;

[0026] Figure 7 This is a cross-sectional view of the telescopic pipe section.

[0027] In the diagram: 1-Screen body; 2-Air suction device; 21-Main air box; 2a-Air outlet; 22-Blower fan; 22a-Fan shaft; 23-Suction box; 24-Cover; 2b-Suction port; 25-Adjusting rod; 25a-Through hole; 26-Spring; 27-Connecting frame; 27a-Strip hole; 28-Pin; 29-Adjustable pipe section; 29a-Strip hole; 29b-Inclined surface; 210-Screw; 211-Rotating frame; 212-Telescopic rod; 3-Vibration mechanism; 31-Drive wheel; 32-Drive rod; 4-Connecting rod; 51-Motor; 52-First transmission structure; 53-Transition shaft; 54-Second transmission mechanism; 55-Third transmission mechanism; 56-Transmission shaft; 10-Base. Detailed Implementation

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] like Figure 1-3 The pneumatic material cleaning mechanism shown includes a base 10, on which a screen body 1 and a pneumatic suction device 2 are mounted. The screen body 1 has densely arranged screen holes, and the screen body 1 can be driven by a vibration mechanism 3 to reciprocate, so that the material on it moves longitudinally. Figure 4 As shown, the air suction device 2 includes a main air box 21 with an air outlet 2a, and a blower fan 22 inside the main air box 21; the air suction device 2 also has multiple air inlets 2b; each side of the blower fan 22 has an air suction box 23 communicating with its internal space, and the two air suction boxes 23 are arranged back and forth along the vibration direction of the screen body 1; each air suction box 23 has an air inlet 2b on its lower side, and each air suction box 23 has a wind pressure regulating mechanism on its upper side, which can regulate the air suction pressure of its corresponding air inlet 2b.

[0030] By setting wind pressure regulating mechanisms for the two air intake boxes 23 respectively, the wind pressure of the two air intake ports 2b can be controlled by the two wind pressure regulating mechanisms when the speed of the blower fan 22 is fixed, so that the wind pressure of the two air intake ports 2b is different. For example, the wind pressure of the first air intake port 2b can be greater than that of the second air intake port 2b, so that the light impurities that are easy to remove are sucked away first, and the light impurities that are more difficult to suck away are sucked away at the second air intake port 2b.

[0031] In the above structure, by setting suction boxes 23 on both sides of the main air box 21, the overall layout of the air suction device 2 is compact. The main air box 21 separates the two suction boxes 23, allowing the material to undergo two suction operations through the two suction ports 2b when moving along the screen body 1, and the material can be fully agitated between the two suction operations. By adjusting each air pressure regulating mechanism, the air pressure of each suction port 2b can be adjusted so that the air pressure of the two suction ports 2b is different. This allows the two suction operations to be targeted differently, thus effectively removing light impurities from the material and achieving effective cleaning of the material.

[0032] The aforementioned air pressure regulating mechanism includes a cover 24 that can rotate and open relative to the intake box 23, and an adjusting rod 25. One end of the adjusting rod 25 is rotatably connected to the cover 24, and the adjusting rod 25 can be adjusted in position relative to the main air box 21. A spring 26 is threaded onto the adjusting rod 25 and acts on the cover 24. The spring 26 applies an elastic force to the cover 24, causing it to tend to close.

[0033] Specifically, a connecting frame 27 is fixed on the main air box 21, and the connecting frame 27 has a strip hole 27a through which the adjusting rod 25 passes; the spring 26 is placed between the connecting frame 27 and the cover 24, and makes the two tend to move away from each other; the adjusting rod 25 has a plurality of through holes 25a arranged in a linear array, and the pin 28 inserted into one of the through holes 25a limits the maximum distance between the connecting frame 27 and the cover 24. This maximum distance is the distance in the length direction of the adjusting rod 25. Under normal conditions, the spring 26 makes the pin 28 abut against the connecting frame 27.

[0034] With the above structure, the minimum opening angle of the cover 24 can be changed by changing the through hole 25a into which the pin 28 is inserted. Furthermore, since the adjusting rod 25 can slide elastically relative to the connecting frame 27, the cover 24 can adaptively change the opening angle as needed during operation, thereby achieving adaptive adjustment of the air pressure at the air intake 2b.

[0035] The screen body 1 is connected to the base 10 by four parallel connecting rods 4, which are arranged in two pairs on both sides of the air suction device 2. In this way, the screen body 1 can always remain flat and move along an arc trajectory to throw the material on it, so that the material moves from front to back on the screen body 1, while removing impurities whose particle size matches the screen aperture size.

[0036] The vibration mechanism 3 is located at the bottom of the screen body 1, and includes a drive wheel 31 and a drive rod 32. The two ends of the drive rod 32 are respectively hinged to the drive wheel 31 and the screen body 1. The rotation of the drive wheel 31 can cause the screen body 1 to swing asymmetrically through the drive rod 32, thereby realizing the throwing motion of the material and making the material move forward on the screen body 1.

[0037] like Figure 1 As shown, a motor 51 and a transition shaft 53 are respectively installed on the two lateral sides of the base 10. The motor 51 establishes a transmission relationship with the fan shaft 22a of the blower fan 22 through a first transmission structure 52. The fan shaft 22a and the transition shaft 53 establish a transmission relationship through a second transmission mechanism 54. The transition shaft 53 and the drive wheel 31 establish a transmission relationship through a third transmission mechanism 55. In this embodiment, the first transmission structure 52, the second transmission mechanism 54, and the third transmission mechanism 55 are all belt drive mechanisms. Both the first transmission structure 52 and the second transmission mechanism 54 have a speed reduction function, which can reduce the speed to drive the target component to operate. In addition, the transition shaft 53 is arranged longitudinally, and a transverse transmission shaft 56 is also provided below the screen body 1. The drive wheel 31 is placed at one end of the transmission shaft 56, and the third transmission mechanism 55 is connected to the other end of the transmission shaft 56. The transmission belt of the third transmission mechanism 55 is in a twisted state.

[0038] The above-mentioned transmission structure is compact, so that the air suction device 2 and the screen body 1 are both driven by the same motor 51, which not only saves costs, but also makes the vibration frequency of the screen body 1 compatible with the speed of the blower fan 22, which is convenient for control.

[0039] An adjustable pipe section 29, capable of being raised and lowered, is installed on the lower side of the air intake box 23. To achieve position adjustment of the adjustable pipe section 29, such as... Figure 6 As shown, a screw 210 is installed at the lower end of the air intake box 23, and the adjustable tube section 29 has a slot 29a through which the screw 210 passes. When it is necessary to adjust the position of the adjustable tube section 29, the screw 210 can be loosened, the adjustable tube section 29 can be adjusted into place, and then the screw 210 can be tightened to fix the adjustable tube section 29.

[0040] In a preferred embodiment, such as Figure 7As shown, the adjustable pipe section 29 has an inclined surface 29b on its front side at the lower end; a rotating frame 211 that can rotate relative to the inclined surface 29b is also installed on the adjustable pipe section 29. The rotating frame 211 is installed on the inner side of the inclined surface 29b. Multiple telescopic rods 212 are installed in a linear array on the rotating frame 211. The telescopic rods 212 can rotate relative to the rotating frame 211; holes for the telescopic rods 212 to extend and retract are installed on the inclined surface 29b. The rotating frame 211 is connected to the screen body 1. When the screen body 1 reciprocates, the rotating frame 211 can reciprocate, thereby causing the telescopic rods 212 to reciprocate and extend. In this embodiment, when the screen body 1 reciprocates, it throws the material backward. The material originally located in front of the adjustable tube section 29 is thrown onto the inclined surface 29b and slides down along it. Longer impurities such as straw are blocked by the telescopic rod 212, and as the telescopic rod 212 retracts into the adjustable tube section 29, the longer impurities fall onto the surface of the material. The material located below the inclined surface 29b is thrown backward to below the adjustable tube section 29. Since the longer impurities such as straw are on the surface, they are more easily sucked away, which improves the impurity removal effect.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A pneumatic material cleaning mechanism, comprising a base (10), on which a screen body (1) and a pneumatic suction device (2) are mounted, the screen body (1) being driven to reciprocate by a vibration mechanism (3); the pneumatic suction device (2) comprising a main air box (21) with an air outlet (2a), the main air box (21) having a blower fan (22); the pneumatic suction device (2) further comprising a plurality of air inlets (2b); characterized in that: The blower (22) has an air intake box (23) on each side that communicates with its internal space, and the two air intake boxes (23) are arranged back and forth along the vibration direction of the screen body (1). Each of the air intake boxes (23) has an air intake port (2b) on its lower side, and each of the air intake boxes (23) has a wind pressure regulating mechanism on its upper side; An adjustable pipe section (29) capable of being raised and lowered is installed on the lower side of the air intake box (23). The front side of the lower end of the adjustable pipe section (29) has an inclined surface (29b). A rotating frame (211) capable of rotating relative to the inclined surface (29b) is also installed on the adjustable pipe section (29). The rotating frame (211) is installed on the inner side of the inclined surface (29b). Multiple telescopic rods (212) are installed in a linear array on the rotating frame (211). The telescopic rods (212) are capable of rotating relative to the rotating frame (211). A hole for the telescopic rods (212) to extend and retract is installed on the inclined surface (29b). The rotating frame (211) is connected to the screen body (1). When the screen body (1) reciprocates, it can drive the rotating frame (211) to reciprocate, thereby causing the telescopic rods (212) to reciprocate and extend.

2. The air-suction material cleaning mechanism according to claim 1, characterized in that, The wind pressure regulating mechanism includes a cover (24) that can be rotated and opened relative to the air intake box (23), and an adjusting rod (25); one end of the adjusting rod (25) is rotatably connected to the cover (24), and the adjusting rod (25) can be adjusted relative to the main air box (21), and a spring (26) acting on the cover (24) is threaded on the adjusting rod (25).

3. The air-suction material cleaning mechanism according to claim 2, characterized in that, A connecting frame (27) is fixed on the main air box (21), and the connecting frame (27) has a strip hole (27a) through which the adjusting rod (25) passes; the spring (26) is placed between the connecting frame (27) and the cover (24), and the two tend to move away from each other; the adjusting rod (25) has a plurality of through holes (25a) arranged in a linear array, and a pin (28) inserted into one of the through holes (25a) limits the maximum distance between the connecting frame (27) and the cover (24).

4. The air-suction material cleaning mechanism according to claim 1, characterized in that, The screen body (1) is connected to the base (10) by four parallel connecting rods (4), which are divided into two pairs and placed on both sides of the air suction device (2).

5. The air-suction material cleaning mechanism according to claim 1, characterized in that, The vibration mechanism (3) includes a drive wheel (31) and a drive rod (32), with the two ends of the drive rod (32) respectively hinged to the drive wheel (31) and the screen body (1).

6. The air-suction material cleaning mechanism according to claim 5, characterized in that, A motor (51) and a transition shaft (53) are respectively installed on both sides of the base (10); the motor (51) establishes a transmission relationship with the fan shaft (22a) of the blower (22) through a first transmission structure (52); the fan shaft (22a) and the transition shaft (53) establish a transmission relationship through a second transmission mechanism (54); the transition shaft (53) and the drive wheel (31) establish a transmission relationship through a third transmission mechanism (55).

7. The air-suction material cleaning mechanism according to claim 1, characterized in that, The lower end of the intake box (23) is fitted with a screw (210), and the adjustable tube section (29) has a slot (29a) through which the screw (210) passes.

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