Multi-stage screening machine

Abstract

A multi-stage screening machine comprises a rack, a screening box, a screening plate, a driving part and an exhaust fan. The screening box is arranged on the rack and comprises a box body, a screen and a rotating frame. A feeding hole and a discharging hole are formed in the side wall of the box body, and an opening is formed in the bottom of the box body; the rotating frame is rotationally arranged in the box body, and one end of the rotating frame penetrates through the side wall of one side of the box body and is connected with a belt wheel; a plurality of supporting rods are arranged on the rotating frame; the screen is arranged in the box body and surrounds the rotating frame; the sieve plate is obliquely arranged below the opening in the bottom of the box body; the driving part is arranged on the rack, is connected to the belt wheel and is used for driving the belt wheel to rotate; the exhaust fan is arranged on the rack, an air inlet of the exhaust fan faces the sieve plate and is located above the sieve plate, and an air outlet of the exhaust fan faces the other side. The problems that when agricultural products containing many impurities are treated, the ideal separation effect is difficult to achieve, the purity of the products is affected, and the subsequent processing difficulty and cost are increased are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of agricultural product screening, and particularly relates to a multi-stage screening machine. BACKGROUND

[0002] In the agricultural product processing industry, screening raw materials is a key step to ensure product quality and subsequent processing efficiency. Traditional screening methods often rely on static screens, which separate materials through manual or mechanical vibration. However, this method is difficult to separate leaves and products when dealing with agricultural products containing more soil, leaves, and other impurities, such as grains and beans. The traditional screening method cannot effectively separate impurities and products with similar particle sizes, which not only affects the purity of the product but also increases the difficulty and cost of subsequent processing. SUMMARY

[0003] The utility model aims at providing a multi-stage screening machine.

[0004] The embodiments of the utility model realize the following technical solutions:

[0005] A multi-stage screening machine includes:

[0006] A rack;

[0007] A screening box is provided on the rack and includes a box body, a screen, and a rotating frame. The side wall of the box body has an inlet hole and an outlet hole, and the bottom has an opening. The rotating frame is rotatably arranged inside the box body, with one end penetrating through the side wall of one side of the box body and connected to a wheel. The rotating frame has a plurality of support rods. The screen is arranged inside the box body and around the rotating frame.

[0008] A screen plate is obliquely arranged below the opening at the bottom of the box body.

[0009] A drive unit is provided on the rack and connected to the wheel to drive its rotation.

[0010] An exhaust fan is provided on the rack, with its air inlet facing the screen plate and located above the screen plate, and its air outlet facing the other side.

[0011] The box body includes a casing and a top cover. The top cover is openably and closably arranged above the casing.

[0012] One side edge of the top cover is rotatably arranged at one side edge of the top of the casing. The box body also has a lock catch for fixing the top cover to the casing.

[0013] The rotating frame comprises a rotating shaft, a plurality of supporting discs, a plurality of connecting plates and a plurality of fan plates; the rotating shaft is arranged in the interior of the cabinet, one end of the rotating shaft is rotatably arranged on one side wall in the interior of the cabinet, the other end of the rotating shaft penetrates through the other side wall in the interior of the cabinet and is connected to a belt pulley; the plurality of supporting discs are arranged on the rotating shaft; the plurality of connecting plates are arranged around the rotating shaft and on the supporting discs; the plurality of fan plates are arranged around the rotating shaft and on the connecting plates and are located on one side of the discharging hole.

[0014] The feeding hopper is further arranged at the feeding hole of the box body; and the discharging baffle is further arranged at the discharging hole of the box body.

[0015] The screen plate is provided with a plurality of screen holes.

[0016] One side of the bottom of the rack is provided with a pair of rollers, and the other side of the bottom of the rack is provided with a supporting rod; the upper portion of the supporting rod is provided with a push rod.

[0017] The vibrator is arranged on the rack and connected to the screen plate.

[0018] The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0019] The multi-stage screening machine comprises a cabinet, a feeding hopper, a discharging baffle, a rack, a vibrating screen and a blower fan; the cabinet is provided with a feeding hole and a discharging hole; the feeding hopper is arranged at the feeding hole of the cabinet; the discharging baffle is arranged at the discharging hole of the cabinet; the rack is arranged in the interior of the cabinet; the vibrating screen is arranged on the rack; the blower fan is arranged on the rack and connected to the vibrating screen. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the schematic view of one side of the feeding port of the utility model;

[0021] Figure 2It is the top cover opening schematic diagram of the utility model;

[0022] Figure 3 It is the discharge port one side schematic diagram of the utility model;

[0023] Figure 4 It is the inside schematic diagram of the utility model removing top cover;

[0024] Figure 5 It is the attached Figure 2 The sectional view of A-A.

[0025] In the figure, 1 is the frame, 101 is the casing, 102 is the feeding hole, 103 is the feeding hopper, 104 is the discharge hole, 105 is the discharge port baffle, 106 is the top cover, 107 is the lock catch, 108 is the push rod, 109 is the motor mounting frame, 201 is the pulley, 202 is the rotating shaft, 203 is the support disc, 204 is the connecting plate, 205 is the support rod, 206 is the fan plate, 207 is the screen, 208 is the guide hopper, 3 is the screen plate, 4 is the air extractor, 5 is the roller. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantage of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the utility model protection.

[0028] As Figures 1-3 shown, a multi-stage screening machine, including frame 1, screening box, screen plate 3, vibrator, drive part and air extractor 4;The bottom left side of the frame 1 is provided with a pair of roller 5, and the bottom right side of the frame 1 is provided with a pair of support rod, the right side of the frame 1 is provided with a pair of push rod 108, which is located above the support rod;When the device is placed, a pair of roller 5 and support rod are respectively located at the four corners of the device and contact with the ground, which ensures that the device is stably placed;When the device is moved, the staff can lift the push rod 108, separate the support rod from the ground, so that the roller 5 rolls on the ground, that is, the device can be moved;

[0029] The screening box is arranged on the top of the frame 1, and comprises a box body, a screen 207, a guide hopper 208, a feeding hopper 103, a discharge port baffle 105 and a rotating frame. The box body comprises a casing 101 and a top cover 106. The casing 101 is arranged on the top of the frame 1, and a feeding hole 102 is arranged on the left side of the front side of the casing 101. The feeding hopper 103 is arranged at the feeding hole 102. A user can pour materials onto the feeding hopper 103, so that the materials slide along the feeding hopper 103 and are poured into the inside of the casing 101 from the feeding hole 102. A discharge hole 104 is arranged on the right side of the back side of the casing 101. The discharge port baffle 105 is arranged at the discharge hole 104. Part of the sundries screened in the inside of the casing 101 can be discharged from the discharge hole 104. The discharge port baffle 105 can be used to cover a collecting bag, so as to facilitate the collection of the sundries and avoid the sundries from splashing everywhere. An opening is arranged on the bottom of the casing 101. The guide hopper 208 is arranged at the opening. The guide hopper 208 is through at the upper and lower ends thereof and is tapered downward. The materials screened pass through the bottom opening of the casing 101, and are discharged from the lower end opening of the guide hopper 208. The top cover 106 is arranged above the casing 101 in an openable and closable manner. One side edge of the top cover 106 is hinged to one side edge of the top of the casing 101. A lock catch 107 is further arranged on the box body, and is used to fix the top cover 106 on the casing 101. The lock catch 107 comprises a clasp, a rotating catch and a pull ring. The clasp is arranged on one side edge of the top of the casing 101 away from the hinged position of the top cover 106. The rotating catch is rotatably arranged on one side outer wall of the top cover 106 away from the hinged position thereof. One end of the pull ring is rotatably arranged on the rotating catch. First, the rotating catch is rotated downward, and the pull ring is sleeved on the clasp. Then, the rotating catch is rotated upward, so that the top cover 106 is fixed on the casing 101.

[0030] As Figure 4 and 5The rotating frame is arranged in the inside of the casing 101, comprising a rotating shaft 202, a belt pulley 201, a plurality of supporting discs 203, a plurality of connecting plates 204, a plurality of supporting rods 205 and a plurality of fan plates 206; the rotating shaft 202 is arranged in the inside of the casing 101, one end of which is rotatably arranged on the right side wall in the inside of the casing 101, and the other end of which penetrates the left side wall in the inside of the casing 101 and is connected to the belt pulley 201, so that the belt pulley 201 can be rotated to drive the rotating shaft 202 to rotate; a plurality of the supporting discs 203 are arranged on the rotating shaft 202 along the axial direction of the rotating shaft 202; a plurality of the connecting plates 204 are arranged around the rotating shaft 202 and on the supporting discs 203, and the supporting discs 203 are used for mounting the connecting plates 204, so that the connecting plates 204 can rotate with the rotating shaft 202 and the structural strength of the connecting plates 204 is enhanced; a plurality of the supporting rods 205 are respectively and perpendicularly connected to one side of the connecting plates 204 away from the axis, and when the supporting rods 205 rotate with the rotating shaft 202, the materials put in can be broken, so that the branches, leaves and other sundries and the required products are separated from each other; a plurality of the fan plates 206 are respectively and perpendicularly connected to one side of the connecting plates 204 away from the axis and are located on one side of the discharge hole 104, and when the fan plates 206 rotate with the rotating shaft 202, air flow can be generated, so that the sundries with relatively light weight are taken out from the discharge hole 104 by the air flow, and the sundries are prevented from being accumulated in the inside of the casing 101;

[0031] The screen 207 is arranged in the inside of the casing 101 and has a semicircular arc shape, and is arranged around the rotating frame and below the rotating frame; the materials processed by the rotating frame fall from the screen 207 and pass through the material guide hopper 208;

[0032] The screen plate 3 is arranged below the material guide hopper 208 obliquely arranged at the bottom of the box body, and is used for guiding the screened materials to the lower end of the screen plate 3; a plurality of screen holes are arranged on the screen plate 3 and are used for further screening the sundries with sizes smaller than the required materials;

[0033] Specifically, the rack 1 is further provided with a vibrator connected to the screen plate 3, so that the screen plate 3 can be vibrated, and the screening and separation of the materials are further promoted by the vibration;

[0034] The driving part is arranged on the rack 1 and is connected to the belt pulley 201, and is used for driving the belt pulley 201 to rotate; the driving part comprises a motor, a driving belt pulley 201 and a belt; the driving belt pulley 201 is connected to the motor and is driven by the motor to rotate the belt around the driving belt pulley 201 and the driven belt pulley 201, so that the driven belt pulley 201 is driven to rotate by the motor, thereby driving the rotating shaft 202 to rotate; it should be noted that the motor, the driving belt pulley 201 and the belt are prior art and are not the improvement of the embodiment, and thus are not described in detail here;

[0035] The suction fan 4 is arranged on the right side of the frame 1, the air inlet of which is directed to the lower end of the screen plate 3 and is located above the screen plate 3, and the air outlet of which is directed to the other side, so that the suction fan 4 can effectively suck and discharge the light-weight sundries such as dust and small debris, thereby further improving the screening precision and the cleanliness of the agricultural products.

[0036] The working principle of the embodiment is as follows:

[0037] The multi-stage screening machine can be used for screening the materials. The user can pour the materials to be screened on the feeding hopper 103, so that the materials slide down along the feeding hopper 103 and are poured into the inside of the casing 101 from the feeding hole 102. The driving part drives the rotating frame to rotate, so that the poured materials are broken, and the branches, leaves, rods and other sundries and the required products are separated from each other. When the fan plate 206 rotates with the rotating shaft 202, the airflow is generated, so that the light-weight sundries are carried out from the discharging hole 104 by the airflow, thereby avoiding the accumulation of the sundries in the inside of the casing 101. The materials treated by the rotating frame fall from the screen mesh 207 and fall on the screen plate 3 through the guide hopper 208. The vibrator vibrates the screen plate 3, so that the screening and separation of the materials are further promoted by the vibration, and the materials slide down along the screen plate 3. In the process, the screen holes further screen the impurities which are smaller than the required materials. When the materials pass below the air inlet of the suction fan 4, the suction fan 4 can suck and discharge the light-weight sundries such as dust and small debris. Finally, the materials can be collected at the lower end of the screen plate 3.

[0038] The above only is the preferred embodiment of the utility model, and does not limit the utility model. For the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-stage screening machine, characterized in that, The utility model relates to a screening device, including: A frame; A screening box arranged on the frame, including a box body, a screen and a rotating frame; the side wall of the box body is provided with an inlet hole and an outlet hole, and the bottom is provided with an opening; the rotating frame is rotatably arranged in the box body, one end of the rotating frame penetrates through the side wall of one side of the box body and is connected with a wheel; a plurality of supporting rods are arranged on the rotating frame; the screen is arranged in the box body and surrounds the rotating frame; A screen plate is arranged below the opening at the bottom of the box body; A driving part is arranged on the frame and connected to the wheel to drive the rotation of the wheel; An air extractor is arranged on the frame, the air inlet of the air extractor faces the screen plate and is located above the screen plate, and the air outlet of the air extractor faces the other side.

2. A multi-stage screening machine according to claim 1, characterised in that, The box body includes a shell and a top cover; the top cover is arranged above the shell and can be opened and closed; 3. A multi-stage screening machine according to claim 2, wherein, One side edge of the top cover is rotatably arranged on one side edge of the top of the shell; the box body is further provided with a lock catch for fixing the top cover to the shell.

4. A multi-stage screening machine according to claim 3, wherein, The rotating frame includes a rotating shaft, a plurality of supporting discs, a plurality of connecting plates and a plurality of fan plates; the rotating shaft is arranged in the shell, one end of the rotating shaft is rotatably arranged on the side wall of one side of the shell, the other end of the rotating shaft penetrates through the side wall of the other side of the shell and is connected to the wheel; a plurality of supporting discs are arranged on the rotating shaft; a plurality of connecting plates surround the rotating shaft and are arranged on the supporting discs; a plurality of fan plates surround the connecting plates and are arranged on the connecting plates and located on one side of the outlet hole.

5. A multi-stage screening machine according to claim 1, wherein, The inlet hole of the box body is further provided with a feeding hopper; the outlet hole of the box body is further provided with an outlet baffle.

6. A multi-stage screening machine according to claim 1, wherein, A plurality of screen holes are arranged on the screen plate.

7. A multi-stage screening machine according to claim 1, wherein, One side of the bottom of the frame is provided with a pair of rollers, and the other side of the bottom of the frame is provided with a supporting rod; a push rod is arranged above the supporting rod.

8. A multi-stage screening machine according to claim 1, wherein, A vibrator is arranged on the frame and connected to the screen plate.

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