Peanut screening machine

Abstract

The utility model relates to a peanut screening machine which comprises an upper-layer screen frame, a middle-layer screen frame, a bottom-layer material collecting groove, a vibration driving assembly and a material brushing driving assembly, the upper-layer screen frame and the middle-layer screen frame are arranged in an inclined mode, screen meshes are arranged in the upper-layer screen frame and the middle-layer screen frame, and the aperture of the screen meshes of the upper-layer screen frame is larger than that of the screen meshes of the middle-layer screen frame. Brushing assemblies are arranged below the screen meshes of the upper-layer screen frame and the middle-layer screen frame, the brushing ends of the brushing assemblies are attached to the lower surfaces of the screen meshes, a sealing plate is formed on the lower surface of the middle-layer screen frame, a discharging notch is formed in the side, close to the feeding end of the middle-layer screen frame, of the sealing plate, and the bottom-layer material collecting groove is arranged on the lower surface of the discharging notch. The vibration driving assembly is used for driving the upper-layer screen frame and the middle-layer screen frame to vibrate front and back, the material brushing driving assembly is used for driving the material brushing driving assembly to move front and back, and the material brushing assemblies are arranged in the upper-layer screen frame and the middle-layer screen frame and brush the lower surface of the screen cloth to kick out peanuts clamped in holes.

Description

Technical Field

[0001] This utility model belongs to the technical field of peanut screening machines, and specifically relates to a peanut screening machine. Background Technology

[0002] Currently, existing peanut screening machines generally use multiple screens arranged vertically. Peanuts enter from the upper screen and fall into the lower screen through the shaking of the screen, thus achieving peanut screening. During the screening process, we found that peanuts are easily stuck in the holes of the screen during vibration. When too many holes are stuck, the screening machine fails. In order to solve this problem, this solution was developed. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a peanut screening machine, which sets up a brushing component in the upper and middle screen frames, and the brushing component brushes the lower surface of the screen to kick out the peanuts stuck in the holes.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a peanut screening machine, including an upper screen frame, a middle screen frame, a bottom collection trough, a vibration drive assembly, and a brushing drive assembly. The upper and middle screen frames are inclined, and screens are provided in the upper and middle screen frames. The screen aperture of the upper screen frame is larger than that of the middle screen frame. A brushing assembly is provided below the screens of the upper and middle screen frames, and the brushing end of the brushing assembly is attached to the lower surface of the screen. A sealing plate is formed on the lower surface of the middle screen frame, and a discharge notch is formed on the side of the sealing plate near the feeding end of the middle screen frame. The bottom collection trough is located on the lower surface of the discharge notch. The vibration drive assembly is used to drive the upper and middle screen frames to vibrate back and forth, and the brushing drive assembly is used to drive the brushing assembly to move back and forth.

[0005] Furthermore, the vibration drive assembly includes a rotating shaft, two connecting sleeves, and two connecting rods. The upper and middle screen frames have a first hinge seat on their rearward-facing surfaces, and the connecting sleeves have a second hinge seat on their circumferential surfaces. One end of one connecting rod is laterally hinged to the first hinge seat on the upper screen frame, and the other end of the other connecting rod is vertically hinged to the second hinge seat. The other connecting rod has one end laterally hinged to the first hinge seat on the middle screen frame, and the other end of the other connecting rod is vertically hinged to the second hinge seat. The rotating shaft is vertically oriented, and its circumferential surface has two spaced cams. The cams are axially engaged with the inner side of the connecting sleeves, and their rotation drives the connecting sleeves to move back and forth.

[0006] Furthermore, the two cams are oriented in opposite directions.

[0007] Furthermore, the brushing assembly includes two connecting plates and multiple brush mounting plates. The lower surface of the brush mounting plates is detachably connected to the upper surface of the two connecting plates on both sides. The multiple brush mounting plates are spaced apart. The rearward side of the upper and middle screen frames forms two clearance notches. One end of the two connecting plates extends out from the clearance notches. The brushing drive assembly drives one end of the connecting plates to move back and forth.

[0008] Furthermore, the brushing drive assembly includes two rotating shafts and two adapter plates. The two rotating shafts are arranged on the rearward side of the upper and middle screen frames. One end of the adapter plate is fixedly connected to one end of the rotating shaft, and the other end of the adapter plate is hinged to the side wall of the connecting plate extending outward.

[0009] Furthermore, the lower surfaces on both sides of the multiple brush mounting plates are connected by guide plates. A wheel is formed on the lower surface of the guide plate. Guide protrusions are formed on both sides of the inner frame of the upper screen frame. The wheel on the guide plate in the upper screen frame contacts the upper surface of the guide protrusion, and the wheel on the guide plate in the middle screen frame contacts the upper surface of the sealing plate.

[0010] Furthermore, a first gear is formed on the circumferential surface of the rotating shaft, and the brushing drive assembly also includes a first motor. A second gear is provided at the output end of the first motor, and the first gear and the second gear are driven by a chain.

[0011] Furthermore, the discharge ends of the upper and middle screen frames are formed with guide constrictions, which are formed by two inclined plates. The guide constrictions of the upper and middle screen frames face different directions.

[0012] Furthermore, the peanut screening machine also includes a frame, with outwardly extending hinge plates formed on the two side walls of the upper and middle screen frames, and hinge seats formed on both sides of the frame, with the hinge plates and hinge seats being laterally hinged.

[0013] Furthermore, the peanut screening machine also includes a hopper, which is located above the highest point of the upper screen frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model is provided with an upper screen frame, a middle screen frame, and a bottom collection trough. Peanuts enter from the upper screen frame. The vibration drive component drives the upper and middle screen frames to vibrate, so that the peanuts are screened on the upper and middle screen frames. Peanuts that are too small will enter the middle screen frame or the bottom collection trough through the holes of the screen. When peanuts get stuck in the holes of the screen, the brush drive component washes the lower surface of the screen back and forth, ensuring that the peanuts stuck in the holes can be removed from the holes in real time, thus ensuring the accuracy of peanut screening.

[0016] 2. To ensure the smooth vibration of the upper and middle screen frames, this solution uses a cam on the rotating shaft. The cam is located inside the connecting sleeve, which is connected to the upper and middle screen frames via a connecting rod. When the cam rotates, it drives the connecting sleeve to move back and forth, thereby achieving the back-and-forth vibration of the upper and middle screen frames.

[0017] 3. When the upper and middle screen frames vibrate in the same direction, the vibration of the screening machine body will be particularly strong. To address this, we set the orientation of the two cams that drive the upper and middle screen frames to vibrate in opposite directions. When the upper screen frame vibrates forward, the middle screen frame will vibrate backward. By using the opposite vibration of the upper and middle screen frames, the vibration of the screening machine itself is reduced without affecting the peanut screening efficiency. Attached Figure Description

[0018] Figure 1 This is a side view of the structure of a peanut screening machine according to the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the upper and middle sieve frames of this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the hidden part of the brush in the brushing assembly of this utility model;

[0021] Figure 4 This is a top view of the vibration drive assembly in this utility model.

[0022] Figure 5 This is a top view of the brushing drive assembly in this utility model.

[0023] The diagram shows the following components: 1. Frame; 2. Hopper; 3. Upper screen frame; 4. Middle screen frame; 5. Bottom collection trough; 6. Vibration drive assembly; 7. Brush assembly; 71. Connecting plate; 72. Brush mounting plate; 73. Brush; 74. Adapter plate; 75. Rotating shaft; 76. First gear; 77. Guide plate; 771. Wheel; 8. Screen; 9. Rotating shaft; 91. Connecting sleeve; 92. Connecting rod; 93. First hinge seat; 94. Second hinge seat; 95. Cam. Detailed Implementation

[0024] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0025] like Figures 1-5 As shown, this embodiment provides a peanut screening machine, including a frame 1, a hopper 2, an upper screen frame 3, a middle screen frame 4, a bottom collection trough 5, a vibration drive assembly 6, and a brushing drive assembly.

[0026] The frame 1 is arranged in a U-shape. The upper screen frame 3 and the middle screen frame 4 are inclinedly arranged inside the frame 1. Specifically, the two side walls of the upper screen frame 3 and the middle screen frame 4 form outwardly extending hinge plates. The two sides of the frame 1 form hinge seats, and the hinge plates and hinge seats are horizontally hinged.

[0027] Screens 8 are installed inside the upper screen frame 3 and the middle screen frame 4. The aperture of the screen 8 in the upper screen frame 3 is larger than that in the middle screen frame 4. Guide protrusions are formed on both sides of the inner frame of the upper screen frame 3. A sealing plate is formed on the lower surface of the middle screen frame 4. A discharge notch is formed on the side of the sealing plate near the feeding end of the middle screen frame 4. The bottom collection trough 5 is installed on the lower surface of the discharge notch. Guide constrictions are formed at the discharge ends of the upper screen frame 3 and the middle screen frame 4. The guide constrictions are formed by two inclined plates. The guide constrictions of the upper screen frame 3 and the middle screen frame 4 face different directions.

[0028] Preferably, the sieve holes in the upper sieve frame 3 and the middle sieve frame 4 are strip-shaped holes with rounded ends. The shape of the sieve holes can also be adjusted according to the actual situation, such as elliptical holes or circular holes.

[0029] The hopper 2 is located above the highest point of the upper screen frame 3 and is used for material discharge.

[0030] A brush assembly 7 is provided below the screen 8 of the upper screen frame 3 and the middle screen frame 4. The brush end of the brush assembly 7 is attached to the lower surface of the screen 8. Specifically, the brush assembly 7 includes two connecting plates 71 and thirteen brush mounting plates 72 (the number of brush mounting plates 72 is set according to the length of the screen frame. When the length of the screen frame increases, the number of brush mounting plates 72 increases, and vice versa). The lower surfaces of the brush mounting plates 72 are detachably connected to the upper surfaces of the two connecting plates 71. The thirteen brush mounting plates 72 are spaced apart, and the distance between adjacent brush mounting plates 72 is 14cm. Brushes 73 are installed on the brush mounting plates 72. The rearward side of the upper screen frame 3 and the middle screen frame 4 forms two clearance notches. The clearance notches are strip-shaped notches. One end of the two connecting plates 71 extends out from the clearance notches. The brush drive assembly drives the connecting plates 71 to extend one end and move back and forth.

[0031] The brush drive assembly is fixed on the frame 1. The brush drive assembly includes two rotating shafts 75, two adapter plates 74, and two first motors. The two rotating shafts 75 are located on the rearward side of the upper screen frame 3 and the middle screen frame 4. One end of the adapter plate 74 is fixedly connected to one end of the rotating shaft 75, and the other end of the adapter plate 74 is hinged to the side wall of the connecting plate 71. The lower surfaces of the two sides of the multiple brush mounting plates 72 are connected by guide plates 77. The lower surface of the guide plate 77 forms a wheel 771. The inner frame of the upper screen frame 3 has guide protrusions on both sides. The wheel 771 on the guide plate 77 inside the upper screen frame 3 contacts the upper surface of the guide protrusion, and the wheel 771 on the guide plate 77 inside the middle screen frame 4 contacts the upper surface of the sealing plate.

[0032] Specifically, a first gear 76 is formed on the circumference of the rotating shaft 75, and a second gear is provided at the output end of the first motor. The first gear 76 and the second gear are driven by a chain.

[0033] The vibration drive assembly 6 is used to drive the upper screen frame 3 and the middle screen frame 4 to vibrate back and forth. The vibration drive assembly 6 includes a rotating shaft 9, two connecting sleeves 91 and two connecting rods 92. The upper screen frame 3 and the middle screen frame 4 have a first hinge seat 93 on their rearward side. The connecting sleeve 91 has a second hinge seat 94 on its circumference. One end of one connecting rod 92 is laterally hinged to the first hinge seat 93 on the upper screen frame 3, and the other end of the connecting rod 92 is vertically hinged to the second hinge seat 94. One end of the other connecting rod 92 is laterally hinged to the first hinge seat 93 on the middle screen frame 4, and the other end of the other connecting rod 92 is vertically hinged to the second hinge seat 94. The rotating shaft 9 is vertically arranged, and two cams 95 are formed on its circumference. The cams 95 are axially locked inside the connecting sleeve 91. The rotation of the cams 95 drives the connecting sleeve 91 to move back and forth. Preferably, the two cams 95 are oriented in opposite directions. When the upper screen frame 3 and the middle screen frame 4 vibrate in the same direction, the vibration of the screening machine body will be particularly strong. Therefore, we set the orientation of the two cams 95 that drive the upper screen frame 3 and the middle screen frame 4 to vibrate in opposite directions. When the upper screen frame 3 vibrates forward, the middle screen frame 4 will vibrate backward. Through the opposite vibration of the upper screen frame 3 and the middle screen frame 4, the vibration of the screening machine itself is reduced without affecting the peanut screening efficiency.

[0034] Working principle: In this scheme, peanuts are poured into the hopper 2 and first enter the upper screen frame 3. After being screened by the screen 8 in the upper screen frame 3, peanuts with a size smaller than the aperture of the screen 8 in the upper screen frame 3 fall into the middle screen frame 4 for screening. Peanuts with a size smaller than the aperture of the screen 8 in the middle screen frame 4 fall into the bottom collection trough 5. When peanuts get stuck in the holes of the screen 8, the rotating shaft 75 rotates, driving the adapter plate 74 to rotate around the axis of the rotating shaft 75. This allows the two connecting plates 71 to move back and forth, so that the brush 73 on the brush mounting plate 72 brushes the peanuts out of the holes.

[0035] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A peanut screening machine, characterized in that: The device includes an upper screen frame, a middle screen frame, a bottom collection trough, a vibration drive assembly, and a brush drive assembly. The upper and middle screen frames are inclined and each contains a screen mesh. The mesh size of the upper screen frame is larger than that of the middle screen frame. A brush assembly is located below the screen meshes of the upper and middle screen frames, with its brushing end attached to the lower surface of the screen mesh. A sealing plate is formed on the lower surface of the middle screen frame, and a discharge notch is formed on the side of the sealing plate near the feeding end of the middle screen frame. The bottom collection trough is located below the discharge notch. The vibration drive assembly drives the upper and middle screen frames to vibrate back and forth, and the brush drive assembly drives the brush assembly to move back and forth.

2. The peanut screening machine according to claim 1, characterized in that: The vibration drive assembly includes a rotating shaft, two connecting sleeves, and two connecting rods. The upper and middle screen frames each have a first hinge seat on their rearward-facing side. The connecting sleeves each have a second hinge seat on their circumferential surface. One end of one connecting rod is laterally hinged to the first hinge seat on the upper screen frame, and the other end of the other connecting rod is vertically hinged to the second hinge seat. The other connecting rod has one end laterally hinged to the first hinge seat on the middle screen frame, and the other end of the other connecting rod is vertically hinged to the second hinge seat. The rotating shaft is vertically oriented, and its circumferential surface has two spaced cams. The cams are axially engaged with the inner side of the connecting sleeves, and their rotation drives the connecting sleeves to move back and forth.

3. The peanut screening machine according to claim 2, characterized in that: The two cams are facing opposite directions.

4. A peanut screening machine according to claim 1, characterized in that: The brushing assembly includes two connecting plates and multiple brush mounting plates. The lower surfaces of the brush mounting plates are detachably connected to the upper surfaces of the two connecting plates. The multiple brush mounting plates are spaced apart. The rearward-facing sides of the upper and middle screen frames have two clearance notches. One end of each of the two connecting plates extends out from the clearance notches. The brushing drive assembly drives one end of the connecting plates to move back and forth.

5. A peanut screening machine according to claim 4, characterized in that: The material brushing drive assembly includes two rotating shafts and two adapter plates. The two rotating shafts are located on the rearward side of the upper and middle screen frames. One end of the adapter plate is fixedly connected to one end of the rotating shaft, and the other end of the adapter plate is hinged to the side wall of the connecting plate.

6. A peanut screening machine according to claim 4, characterized in that: The lower surfaces of the two sides of the multiple brush mounting plates are connected by guide plates. A wheel is formed on the lower surface of the guide plate. Guide protrusions are formed on both sides of the inner frame of the upper screen frame. The wheel on the guide plate in the upper screen frame contacts the upper surface of the guide protrusion, and the wheel on the guide plate in the middle screen frame contacts the upper surface of the sealing plate.

7. A peanut screening machine according to claim 5, characterized in that: The circumferential surface of the rotating shaft has a first gear, and the brushing drive assembly also includes a first motor. The output end of the first motor is provided with a second gear, and the first gear and the second gear are driven by a chain.

8. A peanut screening machine according to claim 1, characterized in that: The discharge ends of the upper and middle screen frames are formed with guide constrictions, which are formed by two inclined plates. The guide constrictions of the upper and middle screen frames face different directions.

9. A peanut screening machine according to claim 1, characterized in that: The peanut screening machine also includes a frame, with two side walls of the upper and middle screen frames forming outwardly extending hinge plates, and hinge seats formed on both sides of the frame, the hinge plates being laterally hinged to the hinge seats.

10. A peanut screening machine according to claim 1, characterized in that: The peanut screening machine also includes a hopper, which is located above the highest point of the upper screen frame.

Images