Chinese chestnut sorting and grading machine

Abstract

The Chinese chestnut sorting and grading machine is provided with a supporting frame, a motor is installed on the side face of the supporting frame, the ends, away from a first belt wheel mechanism, of transmission shafts are connected with a screening barrel through a lifting mechanism, the screening barrel is located between the two transmission shafts, and the two ends of the screening barrel are each provided with a feeding and discharging valve. Grading holes are uniformly reserved in the surface of the screening cylinder; the end, away from the screening barrel, of the other transmission shaft is fixedly connected with one end of a movable shaft through a second belt wheel mechanism, fan blades are fixedly installed at the end, away from the second belt wheel mechanism, of the movable shaft, and the outer sides of the fan blades are sleeved with first fixing boxes. According to the Chinese chestnut sorting and grading machine, Chinese chestnuts are screened through the screening cylinder, the Chinese chestnuts of different sizes can be graded, impurities and leaves mixed in the Chinese chestnuts can be removed in an air blowing mode in the screening process, cleanliness of the Chinese chestnuts is guaranteed, and follow-up processing is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of chestnut sorting, in particular to a chestnut sorting and grading machine. Background Art

[0002] Chestnuts are a common food in autumn. After being picked, they need to be graded and sorted. Chestnuts of similar sizes are sorted so that chestnuts of the same specifications can be processed in the same time in the subsequent processing. Vibration screening is usually used for sorting. For example, a chestnut sorting and grading machine with publication number CN215997064U has a frame, a water tank, a conveyor belt, a motor and a drum screen. The water tank and the drum screen are installed on the frame and connected by an inclined slot. The water tank is equipped with an inclined conveyor belt to pick up the chestnuts that have sunk to the bottom and send them to the The chestnuts are manually scooped out of the drum screen for grading. The conveyor belt and drum screen are driven by a motor. The conveyor belt is installed on the first and last wheels and rotates. The first wheel end is the high end and is installed on the water tank, and the tail wheel end is the low end and is installed on the bottom of the water tank. The first wheel shaft is equipped with a pulley that is connected to the pulley on the motor shaft for transmission. There are dividing plates and side belts on the conveyor belt surface. The screen drum is equipped with a large bevel gear that meshes with the small bevel gear on the motor shaft for transmission. The screen drum is supported on the supporting wheel for rotation. The inner surface of the screen drum is equipped with spiral blades to push the chestnuts from the inlet end to the outlet end. It can quickly and efficiently remove bad chestnuts and automatically sort them out. It is suitable for use in sorting and grading occasions of different sizes and is easy to promote. However, the chestnut sorting and grading machine still has the following shortcomings in actual use:

[0003] Traditional grading machines require chestnuts to be placed in water during the sorting process. Therefore, during the sorting process, the water will follow the chestnuts and adhere to the device. The residual water on the surface of the chestnuts will cause a large amount of impurities and leaves to adhere to the chestnuts. The chestnuts will need to be sorted for the second time later. To address the above problems, it is urgently necessary to carry out innovative designs based on the original grading machines. Utility Model Content

[0004] The purpose of the utility model is to provide a chestnut sorting and grading machine to solve the problem that the traditional grading machine proposed in the above background technology needs to put the chestnuts into water during the sorting process. Therefore, during the sorting process, the moisture will adhere to the device along with the chestnuts, and the moisture remaining on the surface of the chestnuts will cause a large amount of impurities and leaves to adhere to the chestnuts, and the chestnuts need to be sorted for the second time later.

[0005] To achieve the above object, the present utility model provides the following technical solution: A chestnut sorting and grading machine is provided with a support frame. A motor is installed on the side of the support frame, and the output shaft of the motor is connected to a transmission shaft through a first pulley mechanism. One end of the transmission shaft away from the first pulley mechanism is connected to a screening cylinder through a lifting mechanism, and the screening cylinder is located between two transmission shafts. Feeding and discharging valves are provided at both ends of the screening cylinder, and grading holes are evenly reserved on the surface of the screening cylinder;

[0006] Including: One end of the other transmission shaft away from the screening cylinder is fixedly connected to one end of a movable shaft through a second pulley mechanism, and a fan blade is fixedly installed at the end of the movable shaft away from the second pulley mechanism. A first fixed box is sleeved outside the fan blade, and the first fixed box and the second fixed box are respectively fixed at both ends of the support frame.

[0007] Preferably, the diameter of the pulley on the motor is larger than the diameter of the pulley on the right-end transmission shaft, and the diameter of the pulley on the movable shaft is smaller than the diameter of the pulley on the left-end transmission shaft. When the motor drives and drives the transmission shaft to rotate through the first pulley mechanism, it has an accelerating effect, and when the transmission shaft drives the movable shaft to rotate through the second pulley mechanism, it has a further accelerating effect.

[0008] Preferably, the screening cylinder and the support frame form a relative rotation structure, and the inner diameter of the screening cylinder gradually increases from the middle to both ends. The screening cylinder screens out chestnuts with smaller particles by rotating.

[0009] Preferably, the lifting mechanism includes a connecting block fixed on the transmission shaft. The cross-section of the connecting block is a "C" - shaped structure, and a fixing rod penetrates through the inside of the connecting block. The transmission shaft drives the screening cylinder to rotate through the connecting block and the fixing rod for screening.

[0010] Preferably, the connecting block and the fixing rod are in sliding connection, and a spring for resetting the connecting block is wound outside the fixing rod. The fixing rod is fixed on the screening cylinder, and the screening cylinder can slide on the connecting block through the fixing rod, improving the screening efficiency by lifting.

[0011] Preferably, one side of the first fixed box and the second fixed box close to each other is a bevel structure, and air outlet holes are evenly reserved on the bevel of the first fixed box. The gas generated by the rotation of the fan blade can be discharged from the air outlet holes, thereby blowing away impurities and leaves in the screened chestnuts.

[0012] Preferably, a guiding block is fixed on the bevel of the second fixed box, and the edge of the screening cylinder contacts the guiding block after rotation. When the screening cylinder contacts the guiding block, it can drive the screening cylinder to vibrate.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the chestnut sorting and grading machine uses a screening cylinder to screen chestnuts, can grade chestnuts of different sizes, and can remove impurities and leaves mixed in the chestnuts by blowing air during the screening process, ensuring the cleanliness of the chestnuts for subsequent processing. The specific contents are as follows:

[0014] 1. The output shaft of the motor can drive the transmission shaft to rotate through the first pulley mechanism, and the transmission shaft drives the screening drum to rotate through the lifting mechanism to achieve the classification and screening of chestnuts. When the transmission shaft rotates, it can drive the movable shaft to rotate through the second pulley mechanism, so that the movable shaft has an acceleration effect when rotating;

[0015] 2. When the screening drum rotates, its edge can contact the guide block, thereby pushing the screening drum to slide on the connecting block through the fixing rod. Through the elasticity of the spring, the screening drum can vibrate slightly during the rotation process, thereby improving the screening efficiency of chestnuts;

[0016] 3. When the movable shaft rotates, the fan blades can be driven to rotate. The wind force generated in this way enters the first fixed box, and then is discharged from the air outlet and blows onto the chestnuts in the screening process, which can blow off the impurities and leaves mixed in the chestnuts to ensure the cleanliness of the chestnuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the front section structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 This is a schematic diagram of the front cross-section structure of the first fixing box of the utility model;

[0021] Figure 5 This is a front view structural diagram of the connection block of the utility model;

[0022] Figure 6 It is a side view structural schematic diagram of the connecting block of the utility model.

[0023] In the figure: 1. support frame; 2. motor; 3. first pulley mechanism; 4. transmission shaft; 41. connecting block; 42. fixing rod; 5. screening cylinder; 6. inlet and outlet valves; 7. grading hole; 8. second pulley mechanism; 9. movable shaft; 10. fan blade; 11. first fixed box; 12. air outlet; 13. second fixed box; 14. guide block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0026] Embodiment 1: In order to solve the problems existing in the prior art, this embodiment adopts the following technical scheme: a chestnut sorting and grading machine, which is provided with a support frame 1, a motor 2 is installed on the side of the support frame 1, and the output shaft of the motor 2 is connected to each other through a first pulley mechanism 3 and a transmission shaft 4, the end of the transmission shaft 4 away from the first pulley mechanism 3 is connected to a screening drum 5 through a lifting mechanism, and the screening drum 5 is located between the two transmission shafts 4, both ends of the screening drum 5 are provided with inlet and outlet valves 6, and grading holes 7 are evenly reserved on the surface of the screening drum 5; including: another end of the transmission shaft 4 away from the screening drum 5 is fixedly connected with one end of a movable shaft 9 through a second pulley mechanism 8, and the end of the movable shaft 9 away from the second pulley mechanism 8 is fixedly installed with a fan blade 10, the outer side of the fan blade 10 is provided with a first fixed box 11, and the first fixed box 11 and the second fixed box 13 are respectively fixed to the two ends of the support frame 1.

[0027] The existing classifier is not convenient to take out chestnuts of different sizes after screening. Figure 1-Figure 2 As shown, the diameter of the pulley on the motor 2 is larger than the diameter of the pulley on the right end transmission shaft 4, and the diameter of the pulley on the movable shaft 9 is smaller than the diameter of the pulley on the left end transmission shaft 4; the screening drum 5 and the support frame 1 form a relatively rotating structure, and the internal diameter of the screening drum 5 increases from the middle to the two ends; the chestnuts to be screened are poured into the screening drum 5 from the inlet and outlet valves 6, and after the inlet and outlet valves 6 are closed, the motor 2 is operated to drive the transmission shaft 4 to rotate through the first pulley mechanism 3, and the transmission shaft 4 drives the screening drum 5 to rotate through the lifting mechanism, so that the chestnuts with smaller specifications can fall through the grading holes 7 to achieve the grading and screening of the chestnuts. When the transmission shaft 4 rotates, the movable shaft 9 can be driven to rotate through the second pulley mechanism 8, so that the movable shaft 9 has an accelerating effect when rotating. After the chestnuts with smaller specifications are collected, the inlet and outlet valves 6 are opened again, so that the chestnuts with larger specifications will slide to the two ends of the screening drum 5 and be discharged.

[0028] Embodiment 2: Most existing classifiers use a rotating or vibrating method to screen chestnuts, so the screening method is relatively simple. Therefore, this embodiment adopts the following technical solutions, such as Figure 2-Figure 3 and Figure 5-Figure 6As shown, the lifting mechanism includes a connecting block 41 fixed on the transmission shaft 4, and the cross-section of the connecting block 41 is a "C"-shaped structure, and a fixing rod 42 runs through the inside of the connecting block 41; the connecting block 41 and the fixing rod 42 are slidably connected, and a spring for resetting the connecting block 41 is wound around the outer side of the fixing rod 42, and the fixing rod 42 is fixed on the screening drum 5; when the screening drum 5 rotates, its edge can contact the guide block 14, and then the screening drum 5 can be pushed to slide on the connecting block 41 through the fixing rod 42, and the elasticity of the spring can make the screening drum 5 vibrate slightly during the rotation process, thereby improving the screening efficiency of chestnuts.

[0029] Embodiment 3: The existing grading machine needs to put the chestnuts in water during the sorting process. Therefore, during the sorting process, the water will adhere to the device along with the chestnuts, and the residual water on the surface of the chestnuts will cause a large amount of impurities and leaves to adhere to the chestnuts. The chestnuts need to be sorted again later. Therefore, this embodiment adopts the following technical solutions, such as Figure 4 As shown, the sides of the first fixed box 11 and the second fixed box 13 that are close to each other are both inclined structures, and air outlet holes 12 are evenly reserved on the inclined surface of the first fixed box 11; a guide block 14 is fixed on the inclined surface of the second fixed box 13, and the edge of the screening cylinder 5 contacts the guide block 14 after rotation; when the movable shaft 9 rotates, it can drive the fan blades 10 to rotate, so that the wind force generated enters the first fixed box 11, and then is discharged from the air outlet 12 and blows onto the chestnuts in the screening process, which can blow off the impurities and leaves mixed in the chestnuts and ensure the cleanliness of the chestnuts.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chestnut sorting and grading machine, comprising a support frame (1), a motor (2) being mounted on the side of the support frame (1), and an output shaft of the motor (2) being connected to a transmission shaft (4) via a first pulley mechanism (3), and an end of the transmission shaft (4) away from the first pulley mechanism (3) being connected to a screening drum (5) via a lifting mechanism, and the screening drum (5) being located between the two transmission shafts (4), and both ends of the screening drum (5) being provided with inlet and outlet valves (6), and the surface of the screening drum (5) being uniformly reserved with grading holes (7); It is characterized in that include: The end of the other transmission shaft (4) away from the screening drum (5) is fixedly connected to one end of the movable shaft (9) through a second pulley mechanism (8), and a fan blade (10) is fixedly installed on the end of the movable shaft (9) away from the second pulley mechanism (8), and a first fixing box (11) is sleeved on the outer side of the fan blade (10), and the first fixing box (11) and the second fixing box (13) are respectively fixed to the two ends of the support frame (1).

2. A chestnut sorting and grading machine according to claim 1, characterized in that: The diameter of the pulley on the motor (2) is larger than the diameter of the pulley on the right end transmission shaft (4), and the diameter of the pulley on the movable shaft (9) is smaller than the diameter of the pulley on the left end transmission shaft (4).

3. A chestnut sorting and grading machine according to claim 1, characterized in that: The screening drum (5) and the support frame (1) form a relatively rotating structure, and the inner diameter of the screening drum (5) increases gradually from the middle to both ends.

4. A chestnut sorting and grading machine according to claim 1, characterized in that: The lifting mechanism comprises a connecting block (41) fixed on the transmission shaft (4), the cross section of the connecting block (41) is a "C"-shaped structure, and a fixing rod (42) penetrates the interior of the connecting block (41).

5. A chestnut sorting and grading machine according to claim 4, characterized in that: The connecting block (41) and the fixing rod (42) are slidably connected, and a spring for returning the connecting block (41) is wound around the outer side of the fixing rod (42), and the fixing rod (42) is fixed on the screening drum (5).

6. A chestnut sorting and grading machine according to claim 1, characterized in that: The sides of the first fixing box (11) and the second fixing box (13) that are close to each other are both inclined structures, and air outlet holes (12) are evenly reserved on the inclined surface of the first fixing box (11).

7. The chestnut sorting and grading machine according to claim 1, characterized in that: A guide block (14) is fixed on the inclined surface of the second fixing box (13), and the rear edge of the screening drum (5) contacts the guide block (14) after rotation.

Images