Raw material conveying equipment with crushed particle screening function

Abstract

The utility model discloses raw material conveying equipment with a broken grain screening function, which comprises a material conveying pipe, a notch is arranged at the lower end of the side wall of the material conveying pipe, a screening assembly is arranged at the notch and comprises a plurality of third screens, and the third screens are arranged on the lower end of the side wall of the material conveying pipe. The multiple third screens are connected end to end from bottom to top in the inclination direction of the conveying pipe, the hole diameter is gradually increased, a collecting assembly is arranged below the screening assembly, and a gap is reserved between the collecting assembly and the screening assembly; a hopper is arranged at the bottom of the conveying pipe, and a screening device is arranged on the hopper; the notch is formed in the conveying pipe, the multiple third screens are arranged at the notch, the hole diameters of the multiple third screens change orderly, when materials are driven by the spiral blade to move upwards, impurities and broken particles mixed in the materials penetrate through the third screens to be separated from the conveying pipe, and screening in the material conveying process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying and screening, in particular to a raw material conveying device with a crushed particle screening function. Background Art

[0002] Buckwheat itself is rich in various nutrients, such as protein, dietary fiber, vitamins (such as B vitamins), minerals (such as magnesium, iron, zinc, etc.), etc. Therefore, buckwheat can be processed into a variety of products, such as buckwheat flour products, buckwheat tea, buckwheat wine, buckwheat oil, buckwheat health products, etc., thereby improving the actual utilization rate of buckwheat's nutritional value.

[0003] Buckwheat processing involves multiple steps, such as cleaning, shelling, separation, ring selection, drying, grinding, and post-processing. Each of these steps requires the use of conveying equipment to deliver the raw materials to the corresponding processing equipment.

[0004] Currently, there are many types of equipment used to transport raw materials, such as screw conveyors. Screw conveyors are often used in buckwheat processing where precise control of material flow is required, such as transferring a fixed amount of buckwheat from one processing device to another or transporting materials over short distances within a space-constrained workshop.

[0005] The screw conveyor consists of a screw shaft, spiral blades, a housing, a drive device, and other components. The screw shaft is usually driven to rotate by a motor, and the spiral blades are welded to the screw shaft. As the screw shaft rotates, the buckwheat material is pushed forward along the inside of the housing. The structure of the screw conveyor can be specifically referred to the screw conveyor disclosed in a Chinese patent with publication number CN101823615B. The housing is cylindrical in structure, with an external self-aligning bearing assembly provided at one end of the housing and an external thrust bearing assembly provided at the other end; a material receiving port is provided at the upper part of the housing, and a material discharge port is provided at the lower part of the housing; a screw shaft is provided in the housing, and the two ends of the screw shaft are respectively connected to the external self-aligning bearing assembly and the external thrust bearing assembly in a sealed fit, and the external thrust bearing assembly is connected to the drive device. The screw conveyor provided by the above patent can effectively prevent material leakage and dust generation, and can also effectively extend the service life of the equipment. It is particularly suitable for application in the loading process of various powder materials.

[0006] Whether it is the screw conveyor provided by the above patent or other types of screw conveyors, they only realize the transportation of materials. In the process of harvesting and drying buckwheat, impurities will be mixed into the buckwheat. Even in the process of harvesting, drying and processing, the buckwheat will be broken due to impact. The presence of impurities or broken particles will affect the taste and appearance of buckwheat products. For example, when making buckwheat noodles, too many broken particles will make the surface of the noodles rough and the taste will become rough; when making buckwheat buns, too many broken particles will cause the texture of the buns to be uneven. Therefore, due to the single function of the screw conveyor, it is impossible to screen and remove broken particles when it conveys materials. Utility Model Content

[0007] The purpose of the utility model is to provide a raw material transmission device with a crushed grain screening function, aiming to improve the problem that a screw conveyor used for conveying buckwheat is inconvenient to screen and remove impurities and crushed grains.

[0008] The utility model is implemented as follows: a raw material transmission device with a crushed particle screening function includes a feed pipe, a notch is provided at the lower end of the side wall of the feed pipe, a screening component is provided at the notch, the screening component includes a plurality of third screens, the plurality of third screens are connected end to end along the inclined direction of the feed pipe from bottom to top, and the apertures gradually increase, a collecting component is provided below the screening component, and a gap is left between the collecting component and the screening component; a hopper is provided at the bottom of the feed pipe, and a screening device is provided on the hopper.

[0009] Preferably, a feed pipe is provided at the bottom of the conveying pipe, and a discharge pipe is provided at the top. The feed pipe and the discharge pipe are distributed up and down and are provided at both ends of the notch; a spiral blade is provided on the inner side of the conveying pipe, and the spiral blade is installed on a spiral shaft, which is connected to the motor.

[0010] Preferably, the central angle of the notch is set to 180°, the third screen is set to an arc structure, and the central angle is also set to 180°, and an outer frame is provided on the outside of the third screen, and the outer frame contacts the side wall of the notch.

[0011] Preferably, the screening assembly further comprises a plurality of sets of fastening devices, the number of which is greater than the number of the third screen meshes, and the fastening devices are arranged at the end of the third screen meshes and are simultaneously sleeved on the feed pipe.

[0012] Preferably, the fastening device is arranged at the junction of two adjacent outer frames; the fastening device does not cover the channel of the third screen.

[0013] Preferably, the fastening device includes an upper arc plate and a lower arc plate, the ends of the upper arc plate and the lower arc plate are connected by bolts, and at least two snap plates are fixedly arranged below the lower arc plate, and the two snap plates are symmetrically arranged.

[0014] Preferably, the collecting assembly includes a lower slide plate, the inner diameter of which is larger than the outer diameter of the feed pipe and is arranged along the inclination direction of the feed pipe; a plurality of protrusions are fixedly provided on the inner side surface of the lower slide plate, and the protrusions are opposite to the snap plates one by one; a snap groove is provided on the protrusion, the lower end of the snap groove is provided as an opening, and the snap plate is installed in the snap groove.

[0015] Preferably, a blocking plate is provided at the bottom of the lower slide, and the upper end of the blocking plate is provided in contact with the feed pipe; the collecting assembly also includes a collecting cylinder, the top of the collecting cylinder is connected to the bottom of the lower slide, and the bottom threaded sleeve is provided with an end cap.

[0016] Preferably, the hopper is arranged above the feed pipe, and the bottom edge is hingedly connected to the upper end of the feed pipe; a rubber part is provided between the hopper and the feed pipe; an adjustment mechanism is provided on the side of the hopper and the feed pipe, the adjustment mechanism includes a bottom ball, a top ball and a support rod, the bottom of the support rod is inserted into the bottom ball through a bearing connection, and the top thread passes through the top ball; the end shaft of the bottom ball is inserted into the fixed plate through a bearing connection, the fixed plate is installed on the feed pipe, and a connecting rod is fixed on the side of the top ball, and the connecting rod passes through the hopper.

[0017] Preferably, the screening device is set as a first screen, and perforations and slots are provided on the side wall of the hopper, and the first screen is set in the space formed by the perforations and slots; or the screening device is set as a second screen, and a hanging plate is fixed above the second screen, and the hanging plate is sleeved on the side wall of the hopper.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The utility model is provided with a notch on the feed pipe, and a plurality of third screens are provided at the notch. At the same time, the apertures of the plurality of third screens are changed in an orderly manner. When the material is driven upward by the spiral blades, the impurities and broken particles mixed in the material pass through the third screen and leave the feed pipe, thereby realizing screening during the material transmission process.

[0020] 2. The utility model is provided with a collecting component, which is arranged below the third screen and has a gap between the collecting component and the third screen. Impurities and broken particles separated from the third screen fall onto the lower sliding plate and move down along the lower slide plate to accumulate at the bottom, thereby avoiding the wanton distribution of impurities and broken particles and providing convenience for cleaning impurities and broken particles.

[0021] 3. The utility model is provided with a hopper, and a screening device is provided in the hopper, which can screen out large-particle impurities mixed in the material and realize preliminary screening of the material; at the same time, the hopper is hinged on the feed pipe, and an adjustment mechanism is provided on the side, and the state of the hopper can be adjusted by the adjustment mechanism to provide support for it to be in a larger loading state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the utility model as a whole;

[0023] Figure 2 This is a schematic structural diagram of the material delivery pipe of the utility model;

[0024] Figure 3 It is a schematic structural diagram of the collecting component and the screening component of the utility model;

[0025] Figure 4 It is a structural diagram of the screening assembly of the utility model;

[0026] Figure 5 This is a schematic structural diagram of the third screen and fastening device of the utility model;

[0027] Figure 6 It is a structural diagram of the fastening device of the utility model;

[0028] Figure 7 It is a structural diagram of the collection component of the utility model;

[0029] Figure 8 This is a first structural diagram of the hopper of the utility model;

[0030] Figure 9 This is a structural diagram of the hopper and feed pipe of the utility model;

[0031] Figure 10 It is a structural diagram of the first screen of the utility model;

[0032] Figure 11 It is a structural diagram of the adjustment mechanism of the utility model;

[0033] Figure 12 This is a second structural diagram of the hopper of the utility model;

[0034] Figure 13 It is a structural schematic diagram of the second screen of the utility model.

[0035] In the figure: 1. Feed pipe; 11. Motor; 12. Discharge pipe; 13. Spiral blade; 14. Notch; 15. Feed pipe; 2. Collecting assembly; 21. Lower slide plate; 22. Bump; 23. Snap groove; 24. Blocking plate; 25. Collecting cylinder; 26. End cap; 3. Hopper; 31. Vibrating motor; 32. Rubber part; 33. First screen; 34. Slot; 35. Perforation; 36. Second screen; 37. Hanging plate; 4. Screening assembly; 41. Third screen; 42. Fastening device; 421. Upper arc plate; 422. Lower arc plate; 423. Snap plate; 43. Outer frame; 5. Adjusting mechanism; 51. Fixed plate; 52. Support rod; 53. Top ball; 54. Belt; 55. Connecting rod; 56. Bottom ball. DETAILED DESCRIPTION

[0036] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0038] Example 1

[0039] This example provides a new screw conveyor to remove impurities and broken grains while conveying buckwheat. While operating, the screw conveyor controls the movement of the buckwheat raw materials while simultaneously screening out impurities and broken grains, preventing these impurities and broken grains from affecting the taste and appearance of the buckwheat product.

[0040] like Figure 1-10 、 Figure 12 、 Figure 13 As shown, the screw conveyor specifically includes a feed pipe 1, a motor 11, and spiral blades 13. The feed pipe 1 is tilted and has a spiral shaft mounted on its inner side. The end of the spiral shaft extends through the feed pipe 1, and the spiral blades 13 are mounted on the spiral shaft. The motor 11 is mounted at the bottom of the feed pipe 1, and a gearbox is mounted on its output shaft. The gearbox's power output shaft is connected to the spiral shaft. Therefore, when the motor 11 is operating, the spiral shaft and spiral blades 13 can be controlled to rotate, thereby controlling the movement of material within the feed pipe 1.

[0041] To facilitate the flow of materials into and out of the conveying pipe 1, a feed pipe 15 is provided at the bottom of the conveying pipe 1, and a discharge pipe 12 is provided at the top. The feed pipe 15 and the discharge pipe 12 are arranged vertically. Therefore, the material that passes through the feed pipe 15 and enters the conveying pipe 1 rises along the conveying pipe 1 to the discharge pipe 12 and is discharged from the discharge pipe 12, thereby achieving material transfer.

[0042] To screen out impurities and debris during material movement, a notch 14 is provided at the lower end of the sidewall of the conveying pipe 1. This notch 14 is located between the feed pipe 15 and the discharge pipe 12 and extends along the length of the conveying pipe 1. A screening assembly 4 is located at the notch 14. This screening assembly 4 comprises multiple third screens 41, arranged end-to-end along the inclined direction of the conveying pipe 1, with gradually increasing apertures, the largest aperture being smaller than the size of buckwheat grains. This arrangement forms a complete conveying channel with the conveying pipe 1. As the material moves through this channel, the spiral blades 13 stir the material, causing impurities and debris to pass through the third screens 41 and be screened. Because the apertures of the third screens 41 gradually increase, as the material ascends along the conveying pipe 1, small-sized impurities and debris are removed first, followed by larger-sized impurities and debris.

[0043] In order to quickly screen out impurities and broken particles, the central angle of the notch 14 is set to 180°, and the third screen 41 is set to an arc structure, and the central angle is also set to 180°. Therefore, the third screen 41 contacts the material over a larger area to achieve screening of impurities and broken particles.

[0044] To ensure that the third screen 41 is stably mounted in the notch 14, an outer frame 43 is provided on the outside of the third screen 41, and the outer frame 43 contacts the sidewall of the notch 14. Furthermore, the screening assembly 4 includes multiple sets of fastening devices 42, which are distributed along the length of the feed pipe 1 and are simultaneously mounted on the outer frame 43 and the feed pipe 1, thereby ensuring that the third screen 41 is stably mounted in the feed pipe 1.

[0045] Specifically, the fastening device 42 includes an upper arc plate 421 and a lower arc plate 422, and the ends of the upper arc plate 421 and the lower arc plate 422 are connected by bolts. Therefore, under the action of the bolts, the upper arc plate 421 and the lower arc plate 422 can be brought close to each other and clamp the outer frame 43 and the third screen 41, thereby realizing stable and detachable installation of the third screen 41.

[0046] If fastening devices 42 are provided at both ends of each outer frame 43, the number of fastening devices 42 is twice the number of the third screen 41, and the width of the lower arc plate 422 is less than or equal to the width of the edge of the outer frame 43, in this arrangement, the fastening devices 42 will not block the channels of the third screen 41.

[0047] If the fastening device 42 is set at the intersection of adjacent outer frames 43, at this time, the number of fastening devices 42 is at least one more than the number of third screens 41, and the width of the lower arc plate 422 is less than or equal to twice the width of the edge of the outer frame 43. With this arrangement, the fastening device 42 will not block the channel of the third screen 41.

[0048] In order to collect impurities and fragments that fall off the third screen 41 and prevent them from being distributed randomly, a collecting component 2 is provided below the screening component 4. A gap is left between the collecting component 2 and the screening component 4. Therefore, impurities and fragments that fall off from the screening component 4 fall on the collecting component 2 and fall along the collecting component 2.

[0049] Specifically, the collecting assembly 2 includes a lower slide 21 and a collecting barrel 25. The inner diameter of the lower slide 21 is larger than the outer diameter of the feed pipe 1 and is arranged along the inclined direction of the feed pipe 1. Therefore, impurities and broken particles falling from the feed pipe 1 fall directly onto the lower slide 21. Since the lower slide 21 is arranged at an angle, the materials move down along the lower slide 21 to be collected. In addition, a blocking plate 24 is provided at the bottom of the lower slide 21. The upper end of the blocking plate 24 is arranged in contact with the feed pipe 1, blocking the channel for impurities and broken particles to slide down, thereby facilitating the collection of impurities and materials. The top of the collecting barrel 25 is connected to the bottom of the lower slide 21, and the bottom threaded sleeve is provided with an end cap 26. The materials that slide down to the bottom of the lower slide 21 enter the collecting barrel 25 and are collected. When the collecting barrel 25 is full of impurities and broken particles, the impurities and broken particles can be cleaned by rotating and removing the end cap 26.

[0050] To ensure the lower slide 21 is stably mounted below the feed pipe 1, a plurality of protrusions 22 are fixedly mounted on the inner side of the lower slide 21. Each protrusion 22 is provided with a snap groove 23, the lower end of which is open. At least two snap plates 423 are fixedly mounted below each lower arc plate 422. The two snap plates 423 are symmetrically arranged, with the protrusions 22 and snap plates 423 facing each other. The snap plates 423 are mounted in the snap grooves 23. Therefore, the snap plates 423 and the snap grooves 23 cooperate to achieve a removable and stable connection between the lower slide 21 and the fastening device 42, facilitating disassembly as needed while ensuring the downward collection of impurities and debris.

[0051] In order to perform preliminary screening of the buckwheat raw material entering the feeding pipe 1, a hopper 3 is provided above the feeding pipe 15. A screening device is provided on the hopper 3. Through the function of the screening device, impurities larger than the particle size of the buckwheat raw material can be intercepted to prevent them from entering the feeding pipe 1.

[0052] Specifically, the screening device is set as a first screen 33. At this time, a perforation 35 and a slot 34 are provided on the side wall of the hopper 3. The first screen 33 is set in the space formed by the perforation 35 and the slot 34 to achieve stable installation of the first screen 33. At the same time, the first screen 33 can be disassembled as needed for replacement or maintenance.

[0053] The screening device can also be provided as a second screen 36, with a hanging plate 37 fixedly provided above the second screen 36. The hanging plate 37 is sleeved on the side wall of the hopper 3, so that the second screen 36 is stably installed in the hopper 3. In addition, the second screen 36 can be controlled to rise and leave the hopper 3 by pulling the hanging plate 37, which facilitates the cleaning of impurities accumulated in the second screen 36.

[0054] In order to accelerate the falling of the material, a vibration motor 31 is provided on the hopper 3 .

[0055] Example 2

[0056] like Figure 9 As shown, on the basis of Example 1, in order to be able to adjust the state of the hopper 3 according to the tilt state of the feeding pipe 1 so that it is in a vertical position and can load more buckwheat raw materials, the bottom edge of the hopper 3 is hingedly connected to the upper end of the feeding pipe 15, for example, by a hinge, so that the hopper 3 can rotate relative to the feeding pipe 15 to adapt to different installation environments and keep itself in a vertical position.

[0057] like Figure 8 、 Figure 11 As shown, to ensure stable installation of the hopper 3 and provide support for adjusting its state, a rubber member 32 is provided between the hopper 3 and the feed pipe 15. The rubber member 32 cooperates with the material to form a channel for material discharge, while utilizing the deformation characteristics of the rubber member 32 to provide support for adjusting the state of the hopper 3. An adjustment mechanism 5 is provided on the sides of the hopper 3 and the feed pipe 15. The adjustment mechanism 5 includes a bottom ball 56, a top ball 53, and a support rod 52. The bottom of the support rod 52 is inserted into the bottom ball 56 via a bearing connection, and the top thread is provided through the top ball 53. Therefore, the relative position of the bottom ball 56 and the top ball 53 can be adjusted by rotating the support rod 52, facilitating the rotation of the hopper 3 around its axis. To enable the adjustment of the state of the hopper 3 via the support rod 52, the end shaft of the bottom ball 56 is inserted into the fixed plate 51 via a bearing connection. The fixed plate 51 is mounted on the feed pipe 15. A connecting rod 55 is fixed to the side of the top ball 53 and extends through the hopper 3.

[0058] If two bottom balls 56, top balls 53, and support rods 52 are provided, and are distributed on both sides of the hopper 3, in order to control the rotation of the two support rods 52, pulleys or sprockets are provided on the tops of the support rods 52, and the two support rods 52 are connected by belts 54 or chains to achieve synchronous rotation of the two support rods 52. At the same time, the connecting rods 55 of the two top balls 53 can be connected by bolts.

[0059] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A raw material conveying device with crushed particle screening function, characterized in that: The invention comprises a conveying pipe (1), a notch (14) is provided at the lower end of the side wall of the conveying pipe (1), a screening assembly (4) is provided at the notch (14), the screening assembly (4) comprises a plurality of third screens (41), the plurality of third screens (41) are arranged end to end along the inclined direction of the conveying pipe (1) from bottom to top, and the apertures gradually increase, a collecting assembly (2) is provided below the screening assembly (4), a gap is left between the collecting assembly (2) and the screening assembly (4); a hopper (3) is provided at the bottom of the conveying pipe (1), and a screening device is provided on the hopper (3).

2. The raw material conveying equipment with crushed particle screening function according to claim 1, characterized in that: A feed pipe (15) is provided at the bottom of the conveying pipe (1), and a discharge pipe (12) is provided at the top. The feed pipe (15) and the discharge pipe (12) are distributed up and down and are provided at both ends of the notch (14). A spiral blade (13) is provided on the inner side of the conveying pipe (1), and the spiral blade (13) is installed on a spiral shaft, and the spiral shaft is connected to the motor (11).

3. The raw material conveying equipment with crushed particle screening function according to claim 1, characterized in that: The center angle of the notch (14) is set to 180°, the third screen (41) is set to an arc structure, and the center angle is also set to 180°, and an outer frame (43) is provided on the outside of the third screen (41), and the outer frame (43) is in contact with the side wall of the notch (14).

4. The raw material conveying equipment with crushed particle screening function according to claim 3, characterized in that: The screening assembly (4) further comprises a plurality of fastening devices (42), the number of which is greater than the number of the third screen (41), and the fastening devices (42) are arranged at the end of the third screen (41) and are simultaneously sleeved on the feed pipe (1).

5. The raw material conveying equipment with crushed particle screening function according to claim 4, characterized in that: The fastening device (42) is arranged at the junction of two adjacent outer frames (43); the fastening device (42) does not cover the hole of the third screen (41).

6. The raw material conveying equipment with crushed particle screening function according to claim 5, characterized in that: The fastening device (42) comprises an upper arc plate (421) and a lower arc plate (422), the ends of the upper arc plate (421) and the lower arc plate (422) are connected by bolts, and at least two snap plates (423) are fixedly arranged below the lower arc plate (422), and the two snap plates (423) are symmetrically arranged.

7. The raw material conveying equipment with crushed particle screening function according to claim 6, characterized in that: The collecting assembly (2) comprises a lower slide plate (21), the inner diameter of the lower slide plate (21) being larger than the outer diameter of the feeding pipe (1) and being arranged along the inclined direction of the feeding pipe (1); a plurality of protrusions (22) being fixedly arranged on the inner side surface of the lower slide plate (21), and the protrusions (22) being aligned with the snap plates (423) one by one; a snap groove (23) being arranged on the protrusions (22), the lower end of the snap groove (23) being arranged to be open, and the snap plate (423) being installed in the snap groove (23).

8. The raw material conveying equipment with crushed particle screening function according to claim 7, characterized in that: A blocking plate (24) is provided at the bottom of the lower slide (21), and the upper end of the blocking plate (24) is in contact with the feed pipe (1); the collecting assembly (2) also includes a collecting barrel (25), the top of the collecting barrel (25) is in communication with the bottom of the lower slide (21), and the bottom threaded sleeve is provided with an end cap (26).

9. The raw material conveying equipment with crushed particle screening function according to claim 2, characterized in that: The hopper (3) is arranged above the feed pipe (15), and the bottom edge is hingedly connected to the upper end of the feed pipe (15); a rubber piece (32) is arranged between the hopper (3) and the feed pipe (15); an adjustment mechanism (5) is arranged on the side of the hopper (3) and the feed pipe (15), and the adjustment mechanism (5) includes a bottom ball (56), a top ball (53) and a support rod (52), the bottom of the support rod (52) is inserted into the bottom ball (56) through a bearing connection, and the top thread is set through the top ball (53); the end shaft of the bottom ball (56) is inserted into the fixed disk (51) through a bearing connection, and the fixed disk (51) is installed on the feed pipe (15), and a connecting rod (55) is fixedly arranged on the side of the top ball (53), and the connecting rod (55) is set through the hopper (3).

10. The raw material conveying equipment with crushed particle screening function according to claim 1, characterized in that: The screening device is configured as a first screen (33), a perforation (35) and a slot (34) are provided on the side wall of the hopper (3), and the first screen (33) is arranged in the space formed by the perforation (35) and the slot (34); or the screening device is configured as a second screen (36), a hanging plate (37) is fixedly provided above the second screen (36), and the hanging plate (37) is sleeved on the side wall of the hopper (3).

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