Traditional Chinese medicinal material waste residue roller screen device
By using limit wheels and an internal unblocking and cleaning mechanism in the Chinese medicinal herb sieving device, the problems of unstable rotation axis and vibration of the drum are solved, achieving stable operation and efficient slag removal of the sieving device, extending the equipment life and protecting the quality of the medicinal materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-04-14
AI Technical Summary
In the long-term operation of existing Chinese medicinal herb sieving devices, the rotation axis of the drum is unstable and prone to frequent vibration, which leads to damage to the transmission mechanism and the drum, affecting the normal operation of the device.
The rotation of the rotary screen is limited by limiting wheels. Multiple limiting wheels rotate synchronously on both sides and in the middle of the rotary screen to support and restrict the position of the rotation center axis of the rotary screen. Combined with the internal unblocking and cleaning mechanism, the displacement and vibration of the rotary screen are prevented.
This improved the operational stability of the rotary screen, extended the service life of the device, prevented mechanical damage, and ensured the efficiency of slag removal and the quality of medicinal materials.
Smart Images
Figure CN224114481U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of traditional Chinese medicine processing technology, and in particular to a sieving device for waste residue from traditional Chinese medicine. Background Technology
[0002] The purpose of screening and impurity removal in traditional Chinese medicinal materials is to remove impurities such as soil, sand, withered branches and leaves, and non-medicinal parts, thereby improving the purity of the materials and ensuring the quality and efficacy of the medicine. Common methods include mechanical screening, such as using a vibrating screen. The principle is to use the excitation force generated by a vibrating motor to make the material move in a straight line or circular motion on the screen. Smaller impurities fall through the screen openings, while qualified materials remain on the screen. This method is suitable for screening various types of medicinal materials, such as roots, rhizomes, and fruits. Different mesh sizes can be set as needed for multi-stage screening.
[0003] The Chinese medicinal herb sieving and impurity removal device is a high-efficiency piece of equipment combining vibrating sieving technology and automated control. Its core function is to grade and screen Chinese medicinal herbs using adjustable screens of different specifications, while simultaneously removing impurities to improve the quality of the herbs. This device typically consists of a vibrator, screen assembly, inlet, outlet, and base. The vibrator drives the screen to generate high-frequency vibrations, causing the herb particles to stratify according to particle size and separate through the screen openings. The screens can be flexibly replaced to meet the sieving accuracy requirements of different herbs. For example, a sieving drum mechanism can complete multiple stages of sieving in a single operation, reducing damage to the surface of the herbs from repeated processing, while a screw conveyor-type sieving mechanism enhances the uniformity of sieving through a combination of screw conveying and vibration.
[0004] In existing screening and impurity removal devices, the rotary screen used for waste residue removal is prone to problems such as unstable rotation axis and frequent vibration when the drum rotates due to long-term operation under working conditions with many impurities and unstable stress. This leads to damage to the transmission mechanism and the drum, affecting the normal operation of the device. Utility Model Content
[0005] To address the problem of unstable rotation axis and frequent vibration in the sieving and impurity removal devices of existing technologies, this utility model provides a sieving device for Chinese medicinal material waste.
[0006] The technical solution adopted in this utility model is:
[0007] A sieving device for waste residue of Chinese medicinal materials includes a feeding hopper and a first sieving hopper. The feeding hopper is located at the feeding end of the first sieving hopper. The first sieving hopper is provided with residue screening holes, which are evenly distributed around the rotating shaft of the first sieving hopper on its surface. A first discharge hopper is connected to the bottom of the first sieving hopper. Limiting wheels are rotatably connected to both ends and the middle position of the outer side of the first sieving hopper. The limiting wheels are symmetrically arranged on both sides of the first sieving hopper with respect to the central rotating shaft of the first sieving hopper.
[0008] The material conveying mechanism is used to collect the material slag discharged from the screen holes of the first rotary screen and convey it to the outside of the equipment; the limiting wheel is used to limit the rotation of the first rotary screen by fitting against the surface of the first rotary screen and rotating synchronously.
[0009] Furthermore, a circumferentially oriented limiting groove is provided on the surface of the first rotary screen at a position corresponding to the limiting wheel. The limiting groove is used to cooperate with the limiting wheel. One of the multiple limiting wheels is connected to a motor, which is used to drive the first rotary screen to rotate by driving the limiting wheel.
[0010] Furthermore, slag baffles are respectively provided on both sides of the first rotary screen. The slag baffles are located above the first hopper and between two adjacent limiting wheels. The slag baffles are used to block the slag screened out from the slag screen holes.
[0011] Furthermore, the first rotary screen is provided with an equipment housing, and a dredging and cleaning mechanism is provided inside the equipment housing. The dredging and cleaning mechanism includes a mechanism hoisting bracket connected to the inner wall of the equipment housing. The mechanism hoisting bracket is connected to a mechanism support base. The mechanism support base is located inside the first rotary screen. A cleaning slide rail is connected to the mechanism support base. A traveling dredging component that can slide along the cleaning slide rail is provided on the cleaning slide rail.
[0012] The walking unblocking component is used to act on the slag screen holes from the inner wall of the first rotary screen and unblock the slag screen holes.
[0013] Furthermore, the cleaning slide rail has a square cross-section, and the walking and unblocking component is connected to the cleaning slide rail via walking wheels.
[0014] Furthermore, the walking and unblocking assembly is provided with a screen hole unblocking component, which contacts the inner wall of the first rotary screen and acts on the slag screen hole from the inside out. The walking and unblocking assembly is covered with a protective barrier cover, which is connected to the mechanism support base.
[0015] The protective barrier is used to separate the walking and unblocking components from the materials and slag.
[0016] Furthermore, the sieve hole clearing component is cylindrical or conical in shape.
[0017] The beneficial effects of this utility model are:
[0018] This utility model of a rotary screen for Chinese medicinal herb waste residue addresses the issues of rotational instability and vibration caused by environmental factors during operation. It incorporates multiple limiting wheels that restrict the rotation of the rotary screen from both ends and the middle. These limiting wheels are distributed at multiple positions on both sides of the screen, rolling synchronously and in contact with the screen surface during rotation. The rotation direction of the limiting wheels is opposite to that of the screen, providing support and limiting the rotation. This ensures that the position of the central axis of the screen remains constant during rotation, thereby improving stability, preventing displacement and vibration, and preventing mechanical damage to the screen and the device during long-term operation. This effectively extends the device's service life and ensures efficient residue removal. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the internal structure of the rotary screen device of this utility model;
[0020] Figure 2 This is a schematic diagram of the external structure of the rotary screen device of this utility model;
[0021] Figure 3 This is a schematic diagram of the internal structure of the first rotary screen of this utility model;
[0022] Figure 4 This is a side view of the first rotary screen structure of this utility model;
[0023] Figure 5 This is a schematic diagram of the dredging and cleaning mechanism of this utility model;
[0024] Figure 6 This is a side view of the dredging and cleaning mechanism of this utility model.
[0025] Figure label:
[0026] 1-First rotary screen, 2-Feed hopper, 3-Slag screen hole, 4-First discharge hopper, 5-Limiting wheel, 6-Limiting groove, 7-Motor, 8-Slag baffle, 9-Equipment shell, 10-Mechanism hoisting bracket, 11-Mechanism support base, 12-Cleaning slide rail, 13-Traveling and unblocking component, 14-Screen hole unblocking component, 15-Protective barrier cover. Detailed Implementation
[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] This utility model is mainly used for cleaning impurities from raw materials of Chinese medicinal herbs. The operating position of the sieve is supported by the limiting wheel 5 and related mechanisms, preventing the sieve from shifting. (It should be noted that shifting here refers to the relative displacement between the sieve and its mounting bracket. In a vibrating sieve, the sieve can vibrate and screen relative to the equipment casing 9, while the limiting wheel 5 and related mechanisms vibrate synchronously. The relative position between the limiting wheel 5 and the sieve remains unchanged, thus not affecting the vibration screening of the sieve.) It also includes a cleaning component for the sieve, which can clear the sieve holes from the inside out, preventing damage to the medicinal herbs.
[0029] Example 1
[0030] A rotary screen device for waste residue from traditional Chinese medicine, such as Figures 1-2 As shown, it includes a feed hopper 2 and a first rotary screen 1. The feed hopper 2 is located at the feed end of the first rotary screen 1. The first rotary screen 1 is provided with slag screen holes 3. The slag screen holes 3 are evenly distributed around the rotating shaft of the first rotary screen 1 on the surface of the first rotary screen 1. The bottom of the first rotary screen 1 is connected to a first discharge hopper 4. Limiting wheels 5 are rolledly connected to both ends and the middle position of the outer side of the first rotary screen 1. The limiting wheels 5 are symmetrically arranged on both sides of the first rotary screen 1 with respect to the central rotating shaft of the first rotary screen 1.
[0031] The material conveying mechanism is used to collect the material slag discharged from the material slag screen holes 3 of the first rotary screen 1 and convey it to the outside of the equipment; the limiting wheel 5 is used to limit the rotation of the first rotary screen 1 by adhering to the surface of the first rotary screen 1 and rotating synchronously.
[0032] The raw materials of Chinese medicinal herbs enter the first rotary screen 1 through the feed hopper 2. During the operation of the first rotary screen 1, multiple limiting wheels 5 limit the rotation of the rotary screen from both ends and the middle. The limiting wheels 5 are distributed at multiple positions on both sides of the rotary screen. They are in contact with the surface of the rotary screen and roll synchronously during the rotation of the rotary screen. The rotation direction of the limiting wheels 5 is opposite to the rotation direction of the rotary screen, and they play a supporting and limiting role for the rotary screen. This ensures that the position of the central axis of the rotary screen remains unchanged during the rotation, thereby improving the stability of the rotary screen during operation and preventing the rotary screen from shifting and vibrating.
[0033] The aperture size of the slag screen 3 on the first rotary screen 1 is smaller than the size of a single Chinese medicinal herb raw material. Therefore, impurities such as mud and dust that fall off due to collisions between raw materials can be screened out. After the impurities are screened out through the slag screen 3, the remaining raw material can enter the second rotary screen. The aperture size of the size classification screen 3 on the surface of the second rotary screen is larger than that of the slag screen 3, which can screen out small-sized Angelica dahurica raw materials for collection, thereby classifying them by size. For the raw material conveying between the first rotary screen 1 and the second rotary screen, the settings can be selected according to the existing rotary screen working methods. For example, pneumatic feeding can be used to send the cleaned raw material from the first rotary screen 1 to the second rotary screen, or a bottom inclined support feeding method can be used to let the raw material fall from the first rotary screen 1 into the second rotary screen under the action of gravity. A spiral blade feeding method can also be used to convey the raw material to the second rotary screen through a spiral conveyor. Those skilled in the art can directly select the specific implementation based on existing technology and processing requirements.
[0034] Example 2
[0035] Based on Example 1, such as Figure 2 As shown, to prevent relative displacement between the limiting wheel 5 and the rotary screen during rotation, a circumferentially oriented limiting groove 6 is provided on the surface of the first rotary screen 1 at a position corresponding to the limiting wheel 5. The limiting groove 6 is used to cooperate with the limiting wheel 5. One of the multiple limiting wheels 5 is connected to a motor 7, which drives the first rotary screen 1 to rotate by driving the limiting wheel 5. The limiting wheel 5 can rotate relative to the surface of the first rotary screen 1 along the limiting groove 6, keeping the limiting wheel 5 always within the limiting groove 6, thereby further ensuring that the position of the limiting wheel 5 and the first rotary screen 1 remains unchanged.
[0036] Example 3
[0037] Based on Example 1, such as Figure 2 As shown, to prevent some of the slag from falling to other locations on the equipment casing 9 during the screening process and not all of it from falling into the first hopper 4, thus causing slag to accumulate inside the equipment and affect its operation, in this embodiment, slag baffles 8 are respectively provided on both sides of the first rotary screen 1. The slag baffles 8 are located above the first hopper 4 and between two adjacent limiting wheels 5. The slag baffles 8 are used to block the slag screened out from the slag screen holes 3. When the slag in the first rotary screen 1 is screened out and falls to the side under the action of centrifugal force, the slag baffles 8 can block it, so that the slag falls into the first hopper 4 below.
[0038] Example 4
[0039] Based on Example 1, during use, the sieve holes may become clogged by the sludge and impurities that are screened out, causing the sieve holes to be unable to pass through after the screening process has been completed, resulting in a significant decrease in screening efficiency. At this time, frequent shutdowns to clean the sieve holes will greatly affect the processing efficiency of the equipment and waste a lot of time. When the cleaning and unblocking components are used to clean and unblock the sieve holes simultaneously during the operation of the screening device, the unblocking parts of the components will pass through the sieve holes and damage the surface of the medicinal materials inside, breaking the epidermis and thus contaminating the inside of the medicinal materials, affecting the appearance and medicinal properties of the processed products.
[0040] like Figures 3-5 As shown, in this embodiment, the first rotary screen 1 is covered by an equipment housing 9, and a dredging and cleaning mechanism is provided inside the equipment housing 9. The dredging and cleaning mechanism includes a mechanism lifting bracket 10 connected to the inner wall of the equipment housing 9. The mechanism lifting bracket 10 is connected to a mechanism support base 11. The mechanism support base 11 is located inside the first rotary screen 1. A cleaning slide rail 12 is connected to the mechanism support base 11. A walking dredging component 13 that can slide along the cleaning slide rail 12 is provided on the cleaning slide rail 12. The walking dredging component 13 is used to act on the material slag screen hole 3 from the inner wall of the first rotary screen 1 and dredge the material slag screen hole 3.
[0041] As a preferred embodiment, the cross-section of the cleaning slide rail 12 is square to prevent the walking and unblocking component 13 on it from rotating and deviating; preferably, the walking and unblocking component 13 is connected to the cleaning slide rail 12 through walking wheels.
[0042] This unblocking and cleaning mechanism unblocks the sieve holes from the inside out, avoiding damage to the surface of the Angelica dahurica material, thus protecting the product and ensuring processing quality. Furthermore, compared to existing technologies that unblock from the outside in, the equipment forces the blockages and impurities back into the sieve cylinder during unblocking. These impurities may continue to clog the sieve holes during subsequent sieving, thus failing to address the root cause of the problem and resulting in a less efficient unblocking process. This further affects the processing efficiency of sieving, impurity removal, and classification, reducing the equipment's overall processing effectiveness. In contrast, the unblocking and cleaning mechanism of this embodiment, which unblocks from the inside out, can discharge the blockages outside the equipment, thereby preventing secondary blockages.
[0043] Example 5
[0044] Based on Example 4, such as Figures 3-6As shown, the walking and unblocking assembly 13 is equipped with a screen hole unblocking component 14. The screen hole unblocking component 14 contacts the inner wall of the first rotary screen 1 and acts on the material residue screen holes 3 from the inside out. The walking and unblocking assembly 13 is covered with a protective barrier cover 15, which is connected to the mechanism support base 11. The protective barrier cover 15 is used to separate the walking and unblocking assembly 13 from the materials and residue. The protective barrier cover 15 can prevent some medicinal materials from colliding with moving parts and causing damage when the mechanism is running inside the rotary screen. The walking and unblocking components of the walking and unblocking assembly 13 can be moved by means of walking wheels, sliders, etc.
[0045] In a preferred embodiment, the screen hole clearing component 14 is cylindrical or conical. When the screen hole clearing component 14 is cylindrical, it can match the shape of the screen holes for more thorough clearing. When the screen hole clearing component 14 is conical, the conical front end can push the center of the blockage while leaving some space around it. This prevents the blockage from being compressed and compacted inside the screen holes when there is a lot of blockage inside, making clearing more difficult.
[0046] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A rotary screen device for waste residue from traditional Chinese medicinal materials, characterized in that, The device includes a feed hopper and a first rotary screen. The feed hopper is located at the feed end of the first rotary screen. The first rotary screen is provided with slag screen holes, which are evenly distributed around the rotating shaft of the first rotary screen on its surface. The bottom of the first rotary screen is connected to a first discharge hopper. Limiting wheels are rotatably connected to both ends and the middle position of the outer side of the first rotary screen. The limiting wheels are symmetrically arranged on both sides of the first rotary screen with respect to the central rotating shaft of the first rotary screen. The material conveying mechanism is used to collect the material slag discharged from the screen holes of the first rotary screen and convey it to the outside of the equipment; the limiting wheel is used to limit the rotation of the first rotary screen by fitting against the surface of the first rotary screen and rotating synchronously. The first rotary screen is provided with an equipment shell, and a dredging and cleaning mechanism is provided inside the equipment shell. The dredging and cleaning mechanism includes a mechanism hoisting bracket connected to the inner wall of the equipment shell. The mechanism hoisting bracket is connected to a mechanism support base. The mechanism support base is located inside the first rotary screen. A cleaning slide rail is connected to the mechanism support base. A traveling dredging component that can slide along the cleaning slide rail is provided on the cleaning slide rail. The walking unblocking component is used to act on the slag screen holes from the inner wall of the first rotary screen and unblock the slag screen holes.
2. The shredder for waste residue from traditional Chinese medicinal materials according to claim 1, characterized in that, A circumferentially oriented limiting groove is provided on the surface of the first rotary screen at a position corresponding to the limiting wheel. The limiting groove is used to cooperate with the limiting wheel. One of the multiple limiting wheels is connected to a motor, which is used to drive the first rotary screen to rotate by driving the limiting wheel.
3. The shredder for waste residue from traditional Chinese medicinal materials according to claim 1, characterized in that, The first rotary screen is provided with slag baffles on both sides. The slag baffles are located above the first hopper and between two adjacent limiting wheels. The slag baffles are used to block the slag from being screened out of the slag screen holes.
4. The shredder for waste residue from traditional Chinese medicinal materials according to claim 1, characterized in that, The cleaning slide rail has a square cross-section, and the walking and unblocking component is connected to the cleaning slide rail via walking wheels.
5. The shredder for waste residue from traditional Chinese medicinal materials according to claim 1, characterized in that, The walking and unblocking assembly is equipped with a screen hole unblocking component. The screen hole unblocking component contacts the inner wall of the first rotary screen and acts on the slag screen hole from the inside out. The walking and unblocking assembly is covered with a protective barrier cover, which is connected to the mechanism support base. The protective barrier is used to separate the walking and unblocking components from the materials and slag.
6. The shredder for waste residue from traditional Chinese medicinal materials according to claim 5, characterized in that, The sieve unblocking component is cylindrical or conical in shape.