Bran screening equipment for agricultural processing

Abstract

The utility model relates to the technical field of chaff screening equipment, in particular to chaff screening equipment for agricultural processing, which comprises a base and a support, the support is fixedly connected with the upper surface of the base, one end, far away from the base, of the support is rotatably connected with a transverse plate, a connecting mechanism is mounted on the upper surface of the transverse plate, and a hopper is mounted on the upper surface of the connecting mechanism. And a driving mechanism is installed on the lower surface of the transverse plate, an air blower is fixedly connected to the upper surface of the base, and an adjusting device is arranged on the upper surface of the base. According to the utility model, by arranging the adjusting device and the auxiliary device, when a user uses the chaff screening equipment, the angle of the hopper of the chaff screening equipment can be adjusted according to actual requirements, so that the hopper can convey rice by utilizing gravity, the probability that the rice is accumulated on the hopper is reduced, and the material conveying stability during the operation of the chaff screening equipment is improved; and reliable guarantee is provided for efficient and continuous operation of the bran screening process.

Description

Technical Field

[0001] This utility model relates to the field of chaff screening equipment, and in particular to a chaff screening equipment for agricultural processing. Background Technology

[0002] Rice hull screening equipment is a specialized mechanical device used to separate rice grains from rice hulls during rice processing, primarily used in the grain processing industry. Its working principle involves a motor-driven screen body that vibrates or rotates, causing the mixed rice grains and hulls to move on the screen surface. Separation is achieved by utilizing the differences in particle size, weight, and aerodynamic properties. Rice hull screening equipment features high separation efficiency, low energy consumption, and simple operation. It effectively improves the purity and rice yield of processed rice, reduces the load on subsequent processing stages, and is one of the key pieces of equipment in the grain processing flow for achieving rice-hull separation and ensuring the quality of the finished product.

[0003] Existing technologies, such as the utility model patent with publication number CN215744821U, disclose a rice sieving device for agricultural rice processing. This patent uses a large base, with a small base fixedly connected to the top of the large base. Plates are fixedly connected to both sides of the top of the small base. Guide shafts are inserted at the top and bottom of the plates. Horizontal springs are sleeved on the outer sides of the guide shafts that are close to each other. A central box is fixedly connected to the side of the guide shafts that are close to each other. A vertical spring is connected to the central box. This solves the problem that existing equipment uses filter plates for screening, which results in a small amount of rice husks not being screened out.

[0004] During the processing using the aforementioned rice sieving equipment, the vibrating plate remains horizontal, causing the rice to lack the natural downward sliding tendency under gravity. The rice is pushed solely by the lateral movement of the vibrating plate. This single driving force is insufficient to overcome the friction between the rice grains and the adhesion between the rice and the vibrating plate. Especially when the quantity of rice is large or the vibration frequency and amplitude of the vibrating plate are insufficient, some rice grains tend to remain on the vibrating plate and cannot be smoothly fed into the collection frame. As processing continues, these remaining rice grains gradually accumulate, occupying space on the vibrating plate and further hindering the movement of subsequent rice grains. Ultimately, this results in incomplete feeding by the vibrating plate, affecting the working efficiency and processing quality of the rice sieving equipment. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology that when there is a large amount of rice or the vibration frequency and amplitude of the vibrating plate are insufficient, some rice tends to stay on the vibrating plate and cannot be smoothly fed into the collection frame. As processing continues, these stuck rice grains will gradually accumulate, occupy the space of the vibrating plate, further hinder the movement of subsequent rice grains, and ultimately lead to incomplete feeding of the vibrating plate, affecting the working efficiency and processing quality of the rice sieving equipment. Therefore, this invention proposes a rice sieving equipment for agricultural processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an agricultural processing chaff screening device, comprising a base and a support, wherein the support is fixedly connected to the upper surface of the base, a horizontal plate is rotatably connected to the end of the support away from the base, a connecting mechanism is installed on the upper surface of the horizontal plate, a hopper is installed on the upper surface of the connecting mechanism, a driving mechanism is installed on the lower surface of the horizontal plate, a blower is fixedly connected to the upper surface of the base, an air outlet is fixedly connected to the side surface of the hopper, the blower and the air outlet are connected by a flexible hose, and an adjustment device is provided on the upper surface of the base;

[0007] The adjusting device includes a mounting frame, which is fixedly connected to the upper surface of the base. An assembly frame is slidably connected to the inner wall of the mounting frame. A connecting arm is fixedly connected to the side surface of the assembly frame. A guide frame is fixedly connected to the lower surface of the cross plate. A pulley is slidably connected to the inner wall of the guide frame. The pulley is fixedly connected to the inner wall of the connecting arm. A pin is slidably connected to the inner wall of the assembly frame. The pin is inserted into the inner wall of the mounting frame. A positioning frame is fixedly connected to the inner wall of the assembly frame. An adjusting screw is threadedly connected to the inner wall of the positioning frame. A pressure block is rotatably connected to one end of the adjusting screw located inside the assembly frame. The pressure block abuts against the inner side of the pin.

[0008] Preferably, the connecting mechanism comprises a housing fixedly connected to the upper surface of the horizontal plate, a connecting frame located inside the housing, and a spring located above the connecting frame. The hopper is fixedly connected to the upper surface of the connecting frame. By utilizing the cooperation of the connecting frame and the spring, the vibration effect of the hopper can be increased during equipment operation, thereby increasing the vibration frequency of the hopper and improving the separation effect of the hopper.

[0009] Preferably, the drive mechanism comprises a U-shaped frame fixedly connected to the lower surface of the cross plate, a rotating shaft rotatably connected to the U-shaped frame, a motor mounted on the side surface of the U-shaped frame, and a cam fixedly connected to the surface of the rotating shaft. The drive shaft of the motor is fixedly connected to the rotating shaft. By utilizing the cooperation between the motor and the rotating shaft, the cam can be driven to rotate when the motor is powered on, so that the cam can lift the connecting frame during the rotation.

[0010] Preferably, a compression spring is fixedly connected to the side surface of the pin, the compression spring abuts against the inner wall of the mounting bracket, and the insertion end of the pin is located inside the compression spring. Utilizing the elastic force of the compression spring, when the pin is no longer restricted by the pressure block, it can be pushed to slide into the mounting bracket, so that the pin can quickly disengage from the hole of the mounting bracket.

[0011] Preferably, the mounting bracket abuts against the lower surface of the horizontal plate, the mounting bracket is at the same height as the support, and the connecting arm is slidably connected to the inner wall of the mounting bracket. The mounting bracket can support the horizontal plate in conjunction with the support when the height of the horizontal plate is not adjusted, so as to ensure the stability of the horizontal plate during use.

[0012] Preferably, the cross-section of the pin is "T" shaped, and the end of the pin near the positioning frame is chamfered. The cross-section of the pressure block is an equilateral trapezoid, and the inclined surface of the pressure block is adapted to the chamfer of the pin. By using the pressure block in the pressed state, the position of the pin can be restricted to ensure that the pin is in the inserted state, thereby locking the position of the assembly frame.

[0013] Preferably, the surface of the connecting arm is provided with an auxiliary device, the auxiliary device including a linkage column, the surface of the connecting arm is provided with an insertion hole, the linkage column is fixedly connected to the inner wall of the insertion hole, the surface of the linkage column is fixedly connected to a load-bearing frame, and the lower surface of the load-bearing frame is fixedly connected to a limit frame. By using the linkage column, when the user adjusts the height of the horizontal plate, the two connecting arms on both sides can be moved simultaneously, thereby ensuring the smoothness of the entire adjustment process.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] In this invention, by setting up an adjustment device and an auxiliary device, the angle of the hopper of the rice sieving equipment can be adjusted according to actual needs when the user uses the rice sieving equipment. This allows the hopper to use gravity to transport rice, reducing the probability of rice accumulating on the hopper and improving the material conveying stability during the operation of the rice sieving equipment. This provides a reliable guarantee for the efficient and continuous operation of the rice sieving process. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural diagram of a chaff screening device for agricultural processing;

[0017] Figure 2 This utility model provides a bottom view of a chaff screening device for agricultural processing;

[0018] Figure 3 This utility model provides a front view of a chaff screening device for agricultural processing;

[0019] Figure 4 This utility model provides a schematic diagram of the adjustment device structure for a chaff screening device used in agricultural processing;

[0020] Figure 5 This utility model provides a schematic diagram of the adjustment device of an agricultural chaff screening equipment;

[0021] Figure 6 This utility model provides a schematic diagram of the auxiliary device structure for a chaff screening equipment used in agricultural processing.

[0022] Legend:

[0023] 1. Base; 2. Bracket; 3. Horizontal plate; 4. Connecting mechanism; 5. Hopper; 6. Drive mechanism; 7. Blower; 8. Air outlet; 9. Adjusting device; 91. Mounting frame; 92. Assembly frame; 93. Connecting arm; 94. Guide frame; 95. Pulley; 96. Pin; 97. Compression spring; 98. Positioning frame; 99. Adjusting screw; 910. Pressure block; 10. Auxiliary device; 101. Insertion hole; 102. Linkage column; 103. Load-bearing frame; 104. Limiting frame. Detailed Implementation

[0024] Please see Figures 1-6 This utility model provides a technical solution: an agricultural processing chaff screening device, including a base 1 and a support 2. The support 2 is fixedly connected to the upper surface of the base 1. A horizontal plate 3 is rotatably connected to the end of the support 2 away from the base 1. A connecting mechanism 4 is installed on the upper surface of the horizontal plate 3. A hopper 5 is installed on the upper surface of the connecting mechanism 4. A driving mechanism 6 is installed on the lower surface of the horizontal plate 3. A blower 7 is fixedly connected to the upper surface of the base 1. An air outlet 8 is fixedly connected to the side surface of the hopper 5. The blower 7 and the air outlet 8 are connected by a flexible hose. An adjustment device 9 is provided on the upper surface of the base 1.

[0025] In this embodiment: the adjusting device 9 includes a mounting frame 91, which is fixedly connected to the upper surface of the base 1. An assembly frame 92 is slidably connected to the inner wall of the mounting frame 91. A connecting arm 93 is fixedly connected to the side surface of the assembly frame 92. A guide frame 94 is fixedly connected to the lower surface of the cross plate 3. A pulley 95 is slidably connected to the inner wall of the guide frame 94. The pulley 95 is fixedly connected to the inner wall of the connecting arm 93. A pin 96 is slidably connected to the inner wall of the assembly frame 92. The pin 96 is inserted into the inner wall of the mounting frame 91. A positioning frame 98 is fixedly connected to the inner wall of the assembly frame 92. An adjusting screw 99 is threadedly connected to the inner wall of the positioning frame 98. A pressure block 910 is rotatably connected to one end of the adjusting screw 99 located inside the assembly frame 92. The pressure block 910 abuts against the inner side of the pin 96.

[0026] Specifically, the connecting mechanism 4 consists of a housing fixedly connected to the upper surface of the horizontal plate 3, a connecting frame located inside the housing, and a spring located above the connecting frame. The hopper 5 is fixedly connected to the upper surface of the connecting frame. By utilizing the cooperation of the connecting frame and the spring, the vibration effect of the hopper 5 can be increased when the equipment is working, so as to increase the vibration frequency of the hopper 5 and improve the separation effect of the hopper 5.

[0027] Specifically, the drive mechanism 6 consists of a U-shaped frame fixedly connected to the lower surface of the horizontal plate 3, a rotating shaft rotatably connected to the U-shaped frame, a motor mounted on the side surface of the U-shaped frame, and a cam fixedly connected to the surface of the rotating shaft. The drive shaft of the motor is fixedly connected to the rotating shaft.

[0028] In this embodiment: by utilizing the cooperation of the motor and the rotating shaft, the cam can be driven to rotate when the motor is powered on, so that the cam can lift the connecting frame during the rotation.

[0029] Specifically, a compression spring 97 is fixedly connected to the side surface of the pin 96. The compression spring 97 abuts against the inner wall of the mounting bracket 91. The insertion end of the pin 96 is located inside the compression spring 97. Utilizing the elastic force of the compression spring 97, when the pin 96 is no longer restricted by the pressure block 910, it can be pushed to slide into the assembly bracket 92, so that the pin 96 can quickly disengage from the hole of the mounting bracket 91.

[0030] In this embodiment: the mounting bracket 91 abuts against the lower surface of the horizontal plate 3, the mounting bracket 91 is at the same height as the bracket 2, and the connecting arm 93 is slidably connected to the inner wall of the mounting bracket 91.

[0031] In this embodiment: the mounting bracket 91 can support the horizontal plate 3 in conjunction with the bracket 2 when the height of the horizontal plate 3 is not adjusted, so as to ensure the stability of the horizontal plate 3 during use.

[0032] Specifically, the cross-section of the pin 96 is "T" shaped, and the end of the pin 96 near the positioning frame 98 is chamfered. The cross-section of the pressure block 910 is an equilateral trapezoid, and the inclined surface of the pressure block 910 matches the chamfer of the pin 96. By using the pressure block 910 in the pressed state, the position of the pin 96 can be restricted to ensure that the pin 96 is in the inserted state, thereby locking the position of the assembly frame 92.

[0033] Specifically, the surface of the connecting arm 93 is provided with an auxiliary device 10, which includes a linkage column 102. The surface of the connecting arm 93 is provided with an insertion hole 101. The linkage column 102 is fixedly connected to the inner wall of the insertion hole 101. The surface of the linkage column 102 is fixedly connected with a load-bearing frame 103. The lower surface of the load-bearing frame 103 is fixedly connected with a limit frame 104.

[0034] In this embodiment: by using the linkage column 102, when the user adjusts the height of the horizontal plate 3, the two connecting arms 93 on both sides can be moved simultaneously, thereby ensuring the smoothness of the entire adjustment process.

[0035] Working principle: When using the equipment for sieving rice husks, the feeding end of the equipment is installed at the discharge end of the conveying mechanism. The conveying mechanism continuously supplies material to the equipment. The equipment is connected to the power supply and the switch is turned on. The motor and blower 7 are powered on and work. The motor works with the rotating shaft to rotate the cam. During the rotation, the cam reciprocates to lift the connecting frame. The connecting frame is compressed by the spring, and the spring is deformed. When the connecting frame loses the thrust applied by the cam, the spring loses the pressure applied by the connecting frame and rebounds, pushing the connecting frame to reset. Then, under the action of the cam and the spring, the connecting frame drives the hopper 5 to move vertically, causing the hopper 5 to vibrate to sieve the material in the hopper 5. The blower 7 works to accelerate the air into the air outlet 8 through the pipe. During the sieving process, the rice and rice husks are lifted up. The lifted rice husks are blown away from the rice by the wind force of the air outlet 8 to complete the sieving.

[0036] When the amount of rice to be screened increases and the angle of hopper 5 needs to be adjusted, align the piston rod of the jack with the opening of the limit frame 104 and place the aligned jack on the base 1. After ensuring that the piston rod of the jack is aligned with the circle of the limit frame 104, rotate the adjusting screw 99. The adjusting screw 99 engages with the positioning frame 98 using threads, and pulls the pressure block 910 during the engagement. The pressure block 910 gradually disengages from the pin 96. When the pressure block 910 moves to the maximum distance, the pin 96 loses the lock of the pressure block 910, so as to lose the pressure applied to the compression spring 97. The compression spring 97 loses the pressure and rebounds, pushing the pin 96 to reset. The pin 96 resets and disengages from the hole on the mounting frame 91.

[0037] Operate the jack; the piston rod of the jack lifts the load frame 103 upwards. The load frame 103, in conjunction with the linkage column 102, pushes the connecting arms 93 on both sides upwards. Guided by the assembly frame 92 and the mounting frame 91, the connecting arms 93, in conjunction with the pulley 95, push the guide frame 94. The guide frame 94, under the action of the pulley 95, lifts the horizontal plate 3 upwards. Guided by the bracket 2, the horizontal plate 3, in conjunction with the connecting mechanism 4, drives the hopper 5 to rotate. When the pin 96 moves to align with another hole, stop operating the jack. The jack, in conjunction with the load frame 103 and the linkage column 102, provides initial support for the position of the connecting arms 93. Then, rotate the adjusting screw 99 again. With the cooperation of the positioning frame 98, the adjusting screw 99 pushes the pressure block 910. The pressure block 91... Guided by the inclined surface of pin 96, pin 96 is pressed, causing it to slide out of assembly frame 92 and insert into another hole to lock the position of assembly frame 92. After adjusting screw 99 is fully tightened, the jack can be removed, thus completing the adjustment of the angle of hopper 5, raising the feed end of hopper 5. By setting adjustment device 9 and auxiliary device 10, the angle of hopper 5 of the sieving equipment can be adjusted according to actual needs, allowing hopper 5 to use gravity to transport rice, reducing the probability of rice accumulating on hopper 5, improving the material conveying stability during operation of the sieving equipment, and providing a reliable guarantee for the efficient and continuous operation of the sieving process.

Claims

1. A bran screening device for agricultural processing comprising a base (1) and a support (2), characterised in that: The bracket (2) is fixedly connected to the upper surface of the base (1). A horizontal plate (3) is rotatably connected to the end of the bracket (2) away from the base (1). A connecting mechanism (4) is installed on the upper surface of the horizontal plate (3). A hopper (5) is installed on the upper surface of the connecting mechanism (4). A driving mechanism (6) is installed on the lower surface of the horizontal plate (3). A blower (7) is fixedly connected to the upper surface of the base (1). An air outlet (8) is fixedly connected to the side surface of the hopper (5). The blower (7) and the air outlet (8) are connected by a flexible hose. An adjustment device (9) is provided on the upper surface of the base (1). The adjusting device (9) includes a mounting bracket (91), which is fixedly connected to the upper surface of the base (1). An assembly bracket (92) is slidably connected to the inner wall of the mounting bracket (91). A connecting arm (93) is fixedly connected to the side surface of the assembly bracket (92). A guide bracket (94) is fixedly connected to the lower surface of the cross plate (3). A pulley (95) is slidably connected to the inner wall of the guide bracket (94). The pulley (95) is fixedly connected to the inner wall of the connecting arm (93). The assembly frame (92) is slidably connected to a pin (96), which is inserted into the inner wall of the mounting frame (91). The assembly frame (92) is fixedly connected to a positioning frame (98), and the inner wall of the positioning frame (98) is threadedly connected to an adjusting screw (99). One end of the adjusting screw (99) located inside the assembly frame (92) is rotatably connected to a pressure block (910), which abuts against the inner side of the pin (96).

2. A chaffering apparatus for agricultural processing according to claim 1 wherein: The connecting mechanism (4) consists of a housing fixedly connected to the upper surface of the horizontal plate (3), a connecting frame located inside the housing, and a spring located above the connecting frame. The hopper (5) is fixedly connected to the upper surface of the connecting frame.

3. A chaffering apparatus for agricultural processing according to claim 1 wherein: The drive mechanism (6) consists of a U-shaped frame fixedly connected to the lower surface of the horizontal plate (3), a rotating shaft rotatably connected to the U-shaped frame, a motor mounted on the side surface of the U-shaped frame, and a cam fixedly connected to the surface of the rotating shaft. The drive shaft of the motor is fixedly connected to the rotating shaft.

4. The chaffer apparatus for agricultural processing according to claim 1, characterized in that: A compression spring (97) is fixedly connected to the side surface of the pin (96). The compression spring (97) abuts against the inner wall of the mounting bracket (91), and the insertion end of the pin (96) is located inside the compression spring (97).

5. The chaffer apparatus for agricultural processing according to claim 1, characterized in that: The mounting bracket (91) abuts against the lower surface of the horizontal plate (3), the mounting bracket (91) is at the same height as the bracket (2), and the connecting arm (93) is slidably connected to the inner wall of the mounting bracket (91).

6. The chaffer apparatus for agricultural processing according to claim 1, characterized in that: The cross-section of the pin (96) is "T" shaped, and the end of the pin (96) near the positioning frame (98) is chamfered. The cross-section of the pressure block (910) is an equilateral trapezoid, and the inclined surface of the pressure block (910) is adapted to the chamfer of the pin (96).

7. The chaffer apparatus for agricultural processing according to claim 1, characterized by: The surface of the connecting arm (93) is provided with an auxiliary device (10), the auxiliary device (10) comprises a linkage column (102), the surface of the connecting arm (93) is provided with a jack (101), the linkage column (102) is fixedly connected with the inner wall of the jack (101), the surface of the linkage column (102) is fixedly connected with a load frame (103), and the lower surface of the load frame (103) is fixedly connected with a limiting frame (104).

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