Hemp shelling and sorting equipment
By employing a stepped arrangement of a two-stage linear vibrating screen and a suction air box in the hemp seed shelling and sorting equipment, the problems of low output and difficult cleaning of existing equipment have been solved, achieving efficient separation of hemp seed kernels and shells and equipment cleaning, thus improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING QIAOPAI BIOTECH CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-06-26
AI Technical Summary
Existing hemp dehulling and sorting equipment suffers from problems such as low screening output, difficulty in cleaning, and easy generation of oil sludge.
The system employs a two-stage linear vibrating screen arranged in a stepped pattern. The first-stage screen has evenly distributed elongated holes for screening unhulled hemp seeds and kernels, while the second-stage screen has evenly distributed round holes for separating the skin and kernels. It is also equipped with primary and secondary suction bellows connected to a cyclone separator to achieve precise screening and convenient cleaning.
It improves the screening accuracy and output of hemp materials, with a processing capacity of about 1,000 kg per hour. The screen surface is flat and easy to clean, reducing labor costs and increasing production efficiency.
Smart Images
Figure CN224405770U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a dehulling and sorting device, and more particularly to a hemp dehulling and sorting device. Background Technology
[0002] Hemp seeds, also known as hemp seeds, are an oilseed crop, about the size of sorghum grains, with a gray outer shell. After being shelled, they become the medicinal herb hemp kernels, which have a mild laxative effect.
[0003] Hemp seeds require dehulling and sorting during processing. Existing hemp dehulling and sorting equipment includes a frame on which a dehulling mechanism, an air-separation sieve, a primary gravity sieve, a secondary gravity sieve, and a linear small seed sieve are installed. During operation, the hemp material is dehulled by the dehulling mechanism and then enters the air-separation sieve for dehulling. After dehulling, it falls sequentially onto the primary and secondary gravity sieves, where the kernels are separated by the fish-scale screen of the gravity sieve. After separation, the kernels fall onto the linear small seed sieve to be sieved out as small seeds.
[0004] This type of hemp seed dehulling and sorting equipment has the following problems: 1. Because it uses a gravity screen for screening, which requires a thin material layer, the screening output is small, with a raw material processing capacity of about 300 kg per hour; 2. The air-separation screen and gravity screen have many dead corners that are difficult to clean; moreover, because hemp seeds have a high oil content, a lot of oil sludge and oil stains will be generated in the areas in contact with the equipment during processing, which will affect the screening effect if not cleaned in time. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a hemp dehulling and sorting device that provides accurate material screening, high output and easy cleaning.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A hemp seed hulling and sorting device includes a frame and a hulling mechanism mounted on the frame. Its unique feature is that a two-stage linear vibrating screen is arranged in a stepped configuration below the outlet of the hulling mechanism. The first-stage linear vibrating screen has several elongated slots evenly distributed on its screen surface, arranged longitudinally along the screen surface, used to separate unhulled hemp seeds and kernels. The second-stage linear vibrating screen has several round holes evenly distributed on its screen surface for separating the husk and kernel.
[0008] A vibrating conveyor is provided below the screen body of the secondary linear vibrating screen. The oversize discharge port of the first-stage linear vibrating screen extends to the conveying trough of the vibrating conveyor through a return chute. The undersize discharge port of the first-stage linear vibrating screen extends to the screen surface of the second-stage linear vibrating screen through a guide chute. The oversize discharge port of the second-stage linear vibrating screen extends to the conveying trough of the vibrating conveyor through a transition chute.
[0009] A primary suction box is installed above the screen surface of the first-stage linear vibrating screen near the feed end, and a secondary suction box is installed above the screen surface of the second-stage linear vibrating screen corresponding to the discharge end. The primary and secondary suction boxes are respectively connected to a cyclone separator to suck away the hemp skin after dehulling.
[0010] As a further preferred embodiment, a feeding hopper is provided on one side of the frame, and a bucket elevator is provided on the frame. The bucket elevator has two feeding ports on both sides of its lower end. The discharge port of the feeding hopper extends above one of the feeding ports of the bucket elevator, and one end of the discharge port of the vibrating conveyor extends above the other feeding port of the bucket elevator.
[0011] As a further preferred embodiment, there are two shelling mechanisms arranged side by side on the frame, and the discharge port of the bucket elevator is provided with a discharge nozzle at one end, which has two outlets and corresponds to the feed hoppers at the upper ends of the two shelling mechanisms respectively.
[0012] As a further preferred embodiment, the shell-removing mechanism includes a cylindrical shell, with an upper cover plate bolted to the upper end of the shell via a welded upper flange, a conical cylinder fixed inside the upper part of the shell, and a motor base fixed inside the shell via circumferentially distributed support tubes. A motor is installed inside the motor base, and the motor output shaft passes through the top surface of the motor base and is equipped with an impeller, which is used to throw the falling hemp onto the inner wall of the conical cylinder to achieve shell removal.
[0013] As a further preferred option, a transition hopper is provided on the frame below the two dehulling mechanisms to guide the dehulled material onto the first-stage linear vibrating screen.
[0014] As a further preferred embodiment, a material equalization screen is provided above the screen surface of the first-stage linear vibrating screen at the feed end, and the outlet of the transition hopper is flexibly connected to the material equalization screen through a cloth sleeve so that the dehulled material can be evenly spread onto the screen surface of the first-stage linear vibrating screen.
[0015] As a further preferred option, a screw conveyor is provided on one side of the secondary linear vibrating screen, and the discharge port at the lower end of the cyclone separator is connected to two feed ports on the top surface of the screw conveyor, so as to collect the dehulled hemp skin in a concentrated manner.
[0016] The beneficial effects of this utility model are as follows:
[0017] 1. The first-stage linear vibrating screen has several elongated slots evenly distributed on its screen surface, arranged longitudinally along the screen surface, which can separate unhulled hemp seeds and kernels. The second-stage linear vibrating screen has several round slots evenly distributed on its screen surface, which can separate the skin and kernels. The primary and secondary suction air boxes are respectively installed above the screen surfaces of the first and second-stage linear vibrating screens, and are connected to a cyclone separator, which can remove the hulled hemp skin. Therefore, this equipment can make the screening of hemp materials more precise, with a processing capacity of about 1000 kg per hour, increasing the output by more than 3 times.
[0018] 2. The separation of hemp seeds, kernels and skins is achieved through a two-stage linear vibrating screen arranged in a stepped pattern. The screen surface is flat with few dead corners, making it easy to clean. Only one person is needed to operate it, resulting in low labor costs and high production efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model.
[0020] Figure 2 This is a top view of the present invention.
[0021] Figure 3 This is a three-dimensional structural diagram of the present invention.
[0022] Figure 4 This is a three-dimensional structural diagram of the present invention.
[0023] Figure 5 This is a structural cross-sectional view of the shell-removing mechanism.
[0024] Figure 6 This is a 3D structural diagram of a material equalization screen.
[0025] In the diagram: 1. Feeding hopper; 2. Frame; 3. Material equalization screen; 301. Receiving box; 302. Cover plate; 303. Baffle plate; 304. Discharge nozzle; 4. Transition hopper; 5. Deshelling mechanism; 501. Shell; 502. Support pipe; 503. Cone; 504. Top cover plate; 505. Impeller; 505. Motor; 506. Motor base; 507. Bucket elevator; 6. Discharge nozzle; 7. Feed hopper; 8. Primary suction box; 9. First-stage linear vibrating screen; 10. Guide chute; 11. Second-stage linear vibrating screen; 12. Cyclone separator; 13. Secondary suction box; 14. Transition chute; 15. Discharge chute; 16. Return chute; 17. Vibrating conveyor; 18. Screw conveyor; 19. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0027] like Figure 1-6 As shown, the present invention relates to a hemp shelling and sorting device, which includes a frame 2, a feeding hopper 1 on one side of the frame 2, a bucket elevator 6 on the frame 2, two feeding ports 601 on both sides of the lower end of the bucket elevator 6, and the discharge port of the feeding hopper 1 extends above one of the feeding ports of the bucket elevator 6.
[0028] A shelling mechanism 5 is installed on the frame 2. Below the outlet of the shelling mechanism 5, two linear vibrating screens arranged in a stepped manner are arranged, namely the first-stage linear vibrating screen 10 and the second-stage linear vibrating screen 12. The first-stage linear vibrating screen 10 has several elongated slots 101 evenly distributed on its screen surface. The slots 101 are arranged longitudinally along the screen surface and are used to screen unshelled hemp seeds and hemp kernels. The second-stage linear vibrating screen 12 has several round holes 121 evenly distributed on its screen surface. The diameter of the round holes 121 is slightly larger than that of the hemp kernels and is used to separate the skin and kernels.
[0029] A vibrating conveyor 18 is provided below the screen body of the secondary linear vibrating screen. This vibrating conveyor 18 is preferably a leaf spring vibrating conveyor and passes longitudinally through the frame of the secondary linear vibrating screen. The first-stage linear vibrating screen 10 has two oversize discharge ports 102, symmetrically arranged on both sides of its discharge end. Each oversize discharge port 102 extends to the conveying trough of the vibrating conveyor 18 via a return chute 17. The undersize discharge port of the first-stage linear vibrating screen 10 extends to the screen surface of the second-stage linear vibrating screen 12 via a guide chute 11. The oversize discharge port of the second-stage linear vibrating screen 12 extends to the conveying trough of the vibrating conveyor 18 via a transition chute 15 (wider at the top and narrower at the bottom). The undersize discharge end of the second-stage linear vibrating screen 12 is discharged from one side via a discharge chute 16 for easy collection.
[0030] One end of the discharge port of the vibrating conveyor 18 extends above the other feed port of the bucket elevator 6, and is used to transport the sifted material from the secondary linear vibrating screen, i.e. the unhulled hemp seeds, back to the bucket elevator 6 for rehulling.
[0031] A primary suction box 9 is fixed on the frame 2 above the screen surface of the first-stage linear vibrating screen 10 near the feed end. A secondary suction box 14 is provided above the screen surface of the second-stage linear vibrating screen 12 corresponding to the discharge end. The lower ports of the primary suction box 9 and the secondary suction box 14 are rectangular open and the upper ports are round. The upper ports of the two suction boxes are respectively connected to the feed inlet of the cyclone separator 13. The cyclone separator 13 is fixed to one side of the second-stage linear vibrating screen by a bracket and is used to suck away the hemp skin after dehulling.
[0032] Two shelling mechanisms 5 are arranged side by side on the frame 2. One end of the discharge port of the bucket elevator 6 is provided with a discharge nozzle 7, which has two outlets and corresponds to the feed hoppers 8 fixed on the upper ends of the two shelling mechanisms 5 respectively. The feed hoppers 8 are fixed to the upper cover plate 504 of the shelling mechanism 5 by a hopper bracket.
[0033] like Figure 5 As shown, the shell-removing mechanism 5 includes a cylindrical shell 501. An upper cover plate 504 is bolted to the upper end of the shell 501 via a welded upper flange. A conical cylinder 503 with its conical surface facing downwards is fixed to the upper part of the shell 501 via the upper flange. A motor base 507 is fixed inside the shell 501 via three circumferentially distributed support pipes 502. A motor 506 is bolted to the motor base 507. The motor output shaft extends from the top surface of the motor base 507 and is fitted with an impeller 505, used to throw the falling hemp onto the inner wall of the conical cylinder 503 to achieve shell removal. The impeller 505 consists of a lower plate, an upper plate, and blades evenly distributed and fixed between the upper and lower plates along the circumferential direction.
[0034] A transition hopper 4 is fixed on the frame 2 below the two dehulling mechanisms 5, which is used to guide the dehulled material onto the first-stage linear vibrating screen 10.
[0035] A material equalization screen 3 is fixed above the screen surface of the first-stage linear vibrating screen 10 at the feed end. The outlet of the transition hopper 4 is flexibly connected to the feed inlet of the material equalization screen 3 through a cloth sleeve so that the dehulled material can be evenly spread onto the screen surface of the first-stage linear vibrating screen 10.
[0036] like Figure 6 As shown, the material equalization screen 3 includes a rectangular receiving box 301, which is fixed to the side plate of the first-stage linear vibrating screen 10 by a quick-release lock. A cover plate 302 is fixed to the top surface of the receiving box 301 by screws. The feed inlet is located on the cover plate. A rectangular discharge port is provided on one side of the receiving box 301, and a baffle plate 303 is fixed to the outside of the discharge port by screws to adjust the height of the discharged material layer. A discharge nozzle 304 is fixed to the lower edge of the outside of the discharge port. The discharge nozzle 304 is inserted into the primary suction air box 9 to facilitate the suction of the skin.
[0037] A screw conveyor 19 is installed on one side of the secondary linear vibrating screen. The discharge port at the lower end of the cyclone separator 13 is connected to two feed ports on the top surface of the screw conveyor 19 to facilitate the centralized collection of hemp fibers after dehulling.
[0038] The steps for working are as follows:
[0039] 1. First, the material is fed from the feeding hopper 1. The material is lifted by the bucket elevator 6 into the feeding hopper at the top of the two shelling mechanisms 5 for buffering in order to control the shelling speed.
[0040] 2. The material falls into the shelling mechanism 5 through the lower port of the feed hopper. The impeller 505 is driven by the motor to rotate at high speed, which throws the falling hemp onto the inner wall of the cone to achieve shelling. After shelling, it falls into the uniform screen 3 through the transition hopper 4. It falls onto the first-stage linear vibrating screen 10 along with the vibration of the uniform screen 3. At the same time, the fan at the upper end of the cyclone separator 13 is started, and the first skin suction air separation is carried out through the primary skin suction air box 9.
[0041] 3. After the first hulling, the material falls onto the first-stage linear vibrating screen 10, where the hemp seeds and kernels are separated using the evenly distributed elongated holes 101 on the screen surface. The hemp seeds that have not been separated on the screen surface after separation enter the vibrating conveyor 18 through the return chute 17, and are then transported by the vibrating conveyor 18 to the bucket elevator 6 for secondary hulling.
[0042] 4. After the first sorting, the hemp seeds fall onto the second-stage linear vibrating screen 12 through the feed chute 11, where the skin and kernel are separated using the round holes 121 on the screen surface. After the second sorting, the skin on the screen surface enters the secondary suction air box 14 to be sucked out. The kernels below the screen surface are discharged through the discharge chute 16, and the processing of the finished hemp seeds is completed.
[0043] 5. The leather sucked out by the primary suction box 9 and the secondary suction box 14 settles through the cyclone separator 13 and falls onto the screw conveyor for unified transportation and centralized collection.
[0044] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.
Claims
1. A hemp shelling and sorting device, comprising a frame and a shelling mechanism mounted on the frame, characterized in that: Below the outlet of the shelling mechanism, there are two linear vibrating screens arranged in a stepped manner. The first-stage linear vibrating screen has several long strip holes evenly distributed on its screen surface. These long strip holes are arranged longitudinally along the screen surface and are used to screen unshelled hemp seeds and hemp kernels. The second-stage linear vibrating screen has several round holes evenly distributed on its screen surface and is used to separate the skin and kernel. A vibrating conveyor is provided below the screen body of the secondary linear vibrating screen. The oversize discharge port of the first-stage linear vibrating screen extends to the conveying trough of the vibrating conveyor through a return chute. The undersize discharge port of the first-stage linear vibrating screen extends to the screen surface of the second-stage linear vibrating screen through a guide chute. The oversize discharge port of the second-stage linear vibrating screen extends to the conveying trough of the vibrating conveyor through a transition chute. A primary suction box is installed above the screen surface of the first-stage linear vibrating screen near the feed end, and a secondary suction box is installed above the screen surface of the second-stage linear vibrating screen corresponding to the discharge end. The primary and secondary suction boxes are respectively connected to a cyclone separator to suck away the hemp skin after dehulling.
2. The hemp dehulling and sorting equipment according to claim 1, characterized in that: in A feeding hopper is provided on one side of the frame, and a bucket elevator is provided on the frame. The bucket elevator has two feeding ports on both sides of its lower end. The discharge port of the feeding hopper extends above one of the feeding ports of the bucket elevator, and one end of the discharge port of the vibrating conveyor extends above the other feeding port of the bucket elevator.
3. The hemp dehulling and sorting equipment according to claim 2, characterized in that: The shelling mechanism consists of two units arranged side by side on the frame. The bucket elevator has a discharge nozzle at one end of its discharge port, which has two outlets that correspond to the feed hoppers at the upper ends of the two shelling mechanisms, respectively.
4. The hemp dehulling and sorting equipment according to claim 1 or 3, characterized in that: The shell-removing mechanism includes a cylindrical shell with a top cover plate fixed at the upper end of the shell and a conical cylinder fixed in the upper part of the shell. A motor base is fixed inside the shell through a circumferentially distributed support tube. A motor is installed inside the motor base, and the motor output shaft passes through the top surface of the motor base and is equipped with an impeller, which is used to throw the falling hemp onto the inner wall of the conical cylinder to achieve shell removal.
5. The hemp dehulling and sorting equipment according to claim 4, characterized in that: A transition hopper is located below the two dehulling mechanisms on the frame, which is used to guide the dehulled material onto the first-stage linear vibrating screen.
6. The hemp dehulling and sorting equipment according to claim 5, characterized in that: in A material equalization screen is provided above the screen surface of the first-stage linear vibrating screen at the feed end. The outlet of the transition hopper is flexibly connected to the material equalization screen through a cloth sleeve so that the dehulled material can be evenly spread onto the screen surface of the first-stage linear vibrating screen.
7. The hemp dehulling and sorting equipment according to claim 1, characterized in that: in A screw conveyor is provided on one side of the secondary linear vibrating screen. The discharge port at the lower end of the cyclone separator is connected to two feed ports on the top surface of the screw conveyor to facilitate the centralized collection of hemp fibers after dehulling.