Adjustable primary screening equipment
By introducing adjustment and cleaning components into the primary screening equipment, the problems of feed blockage and screen blockage were solved, achieving efficient grading and screening of tea leaves in the primary screening process.
Patent Information
- Application Number
- CN202520471037.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing primary screening equipment lacks feed flow rate adjustment function, which easily leads to blockage, and lacks cleaning function, which causes the screen to become clogged after long-term use, affecting primary screening efficiency.
An adjustment component and a cleaning component were designed. The adjustment component adjusts the feed flow rate through a two-way lead screw and a threaded collar, while the cleaning component cleans the screen through a cleaning brush driven by the main motor, combined with a vibrating motor for screening and buffering.
Effectively regulate the feed flow rate, reduce the risk of clogging, keep the screen unobstructed, improve the initial screening efficiency, and ensure the tea grading effect.
Smart Images
Figure CN223960001U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tea processing technology, specifically to an adjustable primary screening device. Background Technology
[0002] Tea, commonly known as tea, generally includes the leaves and buds of the tea plant. Originating in China, tea was initially used as a sacrificial offering. Tea processing refers to the process of transforming freshly picked tea leaves into finished tea suitable for consumption through a series of techniques. With the expansion of the tea consumption market and the increasing demands for quality, quality control in tea processing has become increasingly important. Initial tea screening equipment involves preliminary screening, impurity removal, and classification of the picked tea leaves to remove large leaves, withered leaves, weeds, soil, stones, and other substandard materials, and to perform preliminary grading of the tea.
[0003] In the process of realizing this utility model, the inventors discovered the following problems with the existing technology: 1. Common primary screening equipment may not have the corresponding feed flow rate adjustment, which may lead to feed blockage, affecting the feed efficiency and reducing the primary screening efficiency; 2. Common primary screening equipment may not have the corresponding cleaning function, which may cause material to accumulate when the screen is used for primary screening for a long time, eventually leading to screen blockage and affecting the primary screening efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide an adjustable primary screening device to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: an adjustable primary screening device, including a box body, a box cover installed on the top of the box body via a quick-connect assembly, an insert plate fixedly connected to the lower center of one end of the box cover, a feed hopper installed on the top of the box cover, an adjusting assembly horizontally installed through the inner side of the feed hopper, discharge channels installed on both sides of the box body, limit rods fixedly connected to both sides of the lower inner surface of the box body, a discharge trough installed on the lower inner side of the box body, a cover plate fixedly connected to one end of the discharge trough, a handle fixedly connected to the center of one end of the cover plate, a frame fixedly connected to the middle of the inner wall of the box body, a second spring evenly fixedly connected to the top of the frame, a screen installed at one end of the second spring, and a cleaning assembly horizontally installed through the inner side of the box body above the screen.
[0005] The quick-connect assembly includes a first bracket fixedly connected to the upper center of one end of the housing. A pull rod is horizontally installed through one end of the first bracket, and one end of the pull rod horizontally passes through the interior of the first spring and is connected to the limiting block.
[0006] The adjusting assembly includes fixed blocks fixedly connected to both sides of one end of the feed hopper, a bidirectional lead screw horizontally installed between the fixed blocks, a handle fixedly connected to one end of the bidirectional lead screw, threaded collars installed on both outer sides of the bidirectional lead screw, a connecting block fixedly connected to one outer end of the threaded collar, and an adjusting plate fixedly connected to one end of the connecting block.
[0007] The cleaning assembly includes a second bracket fixedly connected to one side of the housing. A main motor is installed at one end of the second bracket. The output shaft of the main motor passes horizontally through the inner side of the main roller and is connected to the main threaded rod. A belt is installed on the outside of the main roller. A secondary roller is installed at one end of the inner side of the belt. A secondary threaded rod is installed horizontally through the inner side of the secondary roller. A cleaning brush is installed on the outside of the main threaded rod and the secondary threaded rod.
[0008] More preferably, the first spring and the limiting block form an elastic structure, and one end of the insert plate is provided with a first slot that matches the external dimensions of the limiting block, and one end of the box body is provided with a first groove that matches the external dimensions of the limiting block at the upper center.
[0009] More preferably, the handle and the bidirectional lead screw form a rotating structure, and one end of the feed hopper is provided with a second slot that matches the external dimensions of the connecting block. The bidirectional lead screw and the threaded collar form a linkage structure through the cooperation of the connecting block and the second slot. At the same time, the two sides of the feed hopper are provided with a third slot that matches the external dimensions of the adjusting plate.
[0010] More preferably, the main motor, main roller and main threaded rod form a rotating structure, and the main roller, belt and auxiliary roller form a transmission structure. The main threaded rod, auxiliary threaded rod and cleaning brush form a linkage structure. At the same time, threaded slots are opened at both ends of the upper part of one side of the cleaning brush.
[0011] More preferably, the front of the housing has a transparent observation window located between the quick-connect assembly and the cover plate.
[0012] More preferably, a vibration motor is installed at the bottom of the screen, and the second spring and the screen form an elastic structure.
[0013] More preferably, the bottom sides of the unloading trough are provided with second grooves that are consistent with the external dimensions of the limiting rod.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] In this invention, an adjustment component is added, which allows for the corresponding adjustment of the feed flow rate and speed, thereby effectively reducing the occurrence of feed blockage, increasing feed efficiency, ensuring that the flow rate of tea leaves passing through the screen is moderate, achieving the best initial screening effect, and thus helping to improve the initial screening efficiency of tea leaves and ensure that different grades of tea leaves can be effectively separated.
[0016] In this invention, a cleaning component is added, which allows the screen surface to be cleaned by a cleaning brush. This effectively prevents material from accumulating and clogging the screen during the initial screening process, thus maintaining the screening efficiency of the screen and increasing the initial screening efficiency of the material. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the quick-connect assembly structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the adjustment component structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the cleaning component structure of this utility model.
[0022] In the diagram: 1. Box body; 2. Quick-connect assembly; 201. First bracket; 202. Pull rod; 203. First spring; 204. Limiting block; 3. Box cover; 4. Insert plate; 5. Feed hopper; 6. Adjusting assembly; 601. Fixing block; 602. Two-way lead screw; 603. Handle; 604. Threaded collar; 605. Connecting block; 606. Adjusting plate; 7. Discharge channel; 8. Limiting rod; 9. Discharge chute; 10. Cover plate; 11. Handle; 12. Frame; 13. Second spring; 14. Screen; 15. Cleaning assembly; 1501. Second bracket; 1502. Main motor; 1503. Main roller; 1504. Main threaded rod; 1505. Belt; 1506. Secondary roller; 1507. Secondary threaded rod; 1508. Cleaning brush. Detailed Implementation
[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1 to 5 This utility model provides a technical solution: an adjustable primary screening device, including a box body 1. A box cover 3 is installed on the top of the box body 1 via a quick-connect assembly 2. A plate 4 is fixedly connected to the center of the lower part of one end of the box cover 3. A feed hopper 5 is installed on the top of the box cover 3. An adjustment assembly 6 is horizontally installed through the inner side of the feed hopper 5. Discharge channels 7 are installed on both sides of the box body 1. Limit rods 8 are fixedly connected to both sides of the lower inner surface of the box body 1. A discharge trough 9 is installed on the lower inner side of the box body 1. A cover plate 10 is fixedly connected to one end of the discharge trough 9. A handle 11 is fixedly connected to the center of one end of the cover plate 10. A frame 12 is fixedly connected to the middle of the inner wall of the box body 1. A second spring 13 is evenly fixedly connected to the top of the frame 12. A screen 14 is installed at one end of the second spring 13. A cleaning assembly 15 is horizontally installed through the inner side of the box body 1 above the screen 14.
[0025] The quick-connect assembly 2 includes a first bracket 201 fixedly connected to the upper center of one end of the housing 1. A pull rod 202 is horizontally installed through one end of the first bracket 201. One end of the pull rod 202 is horizontally connected to the inside of the first spring 203 and the limiting block 204.
[0026] The adjusting assembly 6 includes fixed blocks 601 fixedly connected to both sides of one end of the feed hopper 5. A bidirectional lead screw 602 is horizontally installed between the fixed blocks 601. A handle 603 is fixedly connected to one end of the bidirectional lead screw 602. Threaded collars 604 are installed on both sides of the outer side of the bidirectional lead screw 602. A connecting block 605 is fixedly connected to one end of the outer side of the threaded collar 604. An adjusting plate 606 is fixedly connected to one end of the connecting block 605.
[0027] The cleaning assembly 15 includes a second bracket 1501 fixedly connected to one side of the housing 1. A main motor 1502 is installed at one end of the second bracket 1501. The output shaft of the main motor 1502 passes horizontally through the inner side of the main roller 1503 and is connected to the main threaded rod 1504. A belt 1505 is installed on the outside of the main roller 1503. A secondary roller 1506 is installed at one end of the inner side of the belt 1505. A secondary threaded rod 1507 is installed horizontally through the inner side of the secondary roller 1506. A cleaning brush 1508 is installed on the outside of the main threaded rod 1504 and the secondary threaded rod 1507.
[0028] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the first spring 203 and the limiting block 204 form an elastic structure, and one end of the insert plate 4 is provided with a first slot that matches the external dimensions of the limiting block 204. The upper center of one end of the box body 1 is provided with a first groove that matches the external dimensions of the limiting block 204. Through this design, the limiting block 204 can be disengaged from the first groove and pass through the first slot by the elastic deformation of the first spring 203, thereby opening the box cover 3. This allows for a deeper cleaning of the interior after the initial screening is completed, thus effectively maintaining the efficiency of the subsequent initial screening.
[0029] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the handle 603 and the bidirectional lead screw 602 form a rotating structure, and one end of the feed hopper 5 is provided with a second slot that matches the external dimensions of the connecting block 605. The bidirectional lead screw 602 and the threaded collar 604 form a linkage structure through the cooperation of the connecting block 605 and the second slot. At the same time, the two sides of the feed hopper 5 are provided with a third slot that matches the external dimensions of the adjusting plate 606. Through this design, the handle 603 can drive the bidirectional lead screw 602 to rotate, so that the threaded collars 604 on both sides can move in opposite directions under the limiting action of the connecting block 605 and the second slot. The adjusting plate 606 can slide in the third slot, ensuring the effectiveness of the adjustment plate 606 when moving. This allows for adjustment of the diameter of the feed hopper 5, thereby adjusting the feed flow rate and speed of the material, effectively reducing the occurrence of feed blockage, increasing feed efficiency, and ensuring that the flow rate of tea leaves passing through the screen 14 is moderate, achieving the best initial screening effect.
[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 5As shown, the main motor 1502, main roller 1503, and main threaded rod 1504 form a rotating structure, and the main roller 1503, belt 1505, and auxiliary roller 1506 form a transmission structure. The main threaded rod 1504, auxiliary threaded rod 1507, and cleaning brush 1508 form a linkage structure. Threaded slots are provided at both ends of the upper part of one side of the cleaning brush 1508. This design allows the output shaft of the main motor 1502 to drive the main roller 1503 and main threaded rod 1504 to rotate, thereby enabling… The main roller 1503 drives the belt 1505 to rotate, which in turn causes the auxiliary roller 1506 to drive the auxiliary threaded rod 1507 to rotate. The auxiliary threaded rod 1507 and the main threaded rod 1504 rotate simultaneously, causing the cleaning brush 1508 to move horizontally through the threaded groove, thereby cleaning the surface of the screen 14. This effectively prevents material from accumulating and clogging the screen 14 during the initial screening process, thus maintaining the screening efficiency of the screen 14.
[0031] In this embodiment, as Figure 1 and Figure 2 As shown, a transparent observation window is provided on the front of the box 1 between the quick-connect assembly 2 and the cover plate 10; this design allows the staff to observe the internal screening situation in real time through the transparent observation window, thereby effectively avoiding the impact of frequent opening of the box cover 3 on the initial screening efficiency.
[0032] In this embodiment, as Figure 1 and Figure 2 As shown, a vibration motor is installed at the bottom of the screen 14, and the second spring 13 and the screen 14 form an elastic structure. Through this design, the screen 14 can perform vibratory screening of materials by the vibration motor, and the elastic deformation of the second spring 13 can provide a certain buffering and shock absorption effect, thereby increasing a certain degree of stability.
[0033] In this embodiment, as Figure 1 and Figure 2 As shown, the bottom sides of the unloading trough 9 are provided with second grooves that are consistent with the external dimensions of the limiting rod 8. Through this design, the unloading trough 9 can maintain a stable state through the limiting action of the limiting rod 8. When the staff is taking out the material, they can quickly take out the unloading trough 9 by cooperating with the limiting rod 8 and the second groove, which reduces labor and saves time.
[0034] The usage and advantages of this utility model: The adjustable primary screening device operates as follows:
[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the material is first poured into the housing 1 through the feed hopper 5. When it is necessary to adjust the feed flow rate and speed, the handle 603 can be rotated. The handle 603 can drive the bidirectional lead screw 602 to rotate, so that the threaded collars 604 on both sides can move in opposite directions under the limiting action of the connecting block 605 and the second slot. The adjusting plate 606 can slide in the third slot to ensure the effectiveness of the adjustment plate 606's movement. Thus, the diameter of the feed hopper 5 can be adjusted, thereby adjusting the feed flow rate of the material. The speed is adjusted. When the material falls onto the surface of the screen 14, the vibration motor is started, and the screen 14 vibrates, thus vibrating and screening the material. During the vibration screening, the second spring 13 undergoes elastic deformation, thereby providing a certain buffering and shock absorption effect. Material smaller than the aperture of the screen 14 will fall into the discharge trough 9, while material larger than the aperture of the screen 14 will remain on the surface of the screen 14. At this time, the main motor 1502 can be turned on, and the output shaft of the main motor 1502 can drive the main roller 1503 and the main threaded rod 1504 to move forward. The main roller 1503 rotates, causing the belt 1505 to rotate, which in turn causes the auxiliary roller 1506 to rotate the auxiliary threaded rod 1507. The auxiliary threaded rod 1507 and the main threaded rod 1504 rotate simultaneously, causing the cleaning brush 1508 to move horizontally through the threaded slot, thus cleaning the surface of the screen 14. This prevents material accumulation during the initial screening process and avoids clogging of the screen 14. Simultaneously, materials larger than the screen 14's aperture can be discharged through the discharge channel. When the initial screening is finished, the staff can pull the handle 11 to pull out the unloading chute 9, and then take out the material in the unloading chute 9. When it is necessary to perform a deep cleaning of the inside of the box 1, the pull rod 202 can be pulled, and the first spring 203 will undergo elastic deformation, so that the limiting block 204 disengages from the first groove opened at the center of the upper part of one end of the box 1, and then passes through the first slot opened at one end of the insert plate 4, so that the box cover 3 can be opened, and the inside of the box 1 can be cleaned.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An adjustable primary screening device, comprising a housing (1), characterized in that: The top of the box (1) is fitted with a box cover (3) via a quick-connect assembly (2). A plate (4) is fixedly connected to the center of the lower part of one end of the box cover (3). A feed hopper (5) is installed on the top of the box cover (3). An adjusting assembly (6) is horizontally installed through the inner side of the feed hopper (5). Discharge channels (7) are installed on both sides of the box (1). Limiting rods (8) are fixedly connected to both sides of the lower inner surface of the box (1). A discharge channel is installed on the lower inner part of the box (1). The unloading trough (9) has a cover plate (10) fixedly connected to one end, and a handle (11) fixedly connected to the center of one end of the cover plate (10). A frame (12) is fixedly connected to the middle of the inner wall of the box (1). A second spring (13) is evenly fixedly connected to the top of the frame (12). A screen (14) is installed at one end of the second spring (13). A cleaning component (15) is horizontally installed on the inner side of the box (1) above the screen (14). The quick-connect assembly (2) includes a first bracket (201) fixedly connected to the upper center of one end of the housing (1). A pull rod (202) is horizontally installed through one end of the first bracket (201). One end of the pull rod (202) is horizontally connected to the inside of the first spring (203) and the limiting block (204). The adjusting assembly (6) includes fixed blocks (601) fixedly connected to both sides of one end of the feed hopper (5), a bidirectional lead screw (602) horizontally installed between the fixed blocks (601), a handle (603) fixedly connected to one end of the bidirectional lead screw (602), threaded collars (604) installed on both sides of the outer side of the bidirectional lead screw (602), a connecting block (605) fixedly connected to one end of the outer side of the threaded collar (604), and an adjusting plate (606) fixedly connected to one end of the connecting block (605). The cleaning assembly (15) includes a second bracket (1501) fixedly connected to one side of the housing (1). A main motor (1502) is installed at one end of the second bracket (1501). The output shaft of the main motor (1502) passes horizontally through the inner side of the main roller (1503) and is connected to the main threaded rod (1504). A belt (1505) is installed on the outside of the main roller (1503). A secondary roller (1506) is installed at one end of the inner side of the belt (1505). A secondary threaded rod (1507) is installed horizontally through the inner side of the secondary roller (1506). A cleaning brush (1508) is installed on the outside of the main threaded rod (1504) and the secondary threaded rod (1507).
2. The adjustable primary screening device according to claim 1, characterized in that: The first spring (203) and the limiting block (204) form an elastic structure, and one end of the insert plate (4) is provided with a first slot that matches the external size structure of the limiting block (204), and one end of the box (1) is provided with a first groove that matches the external size structure of the limiting block (204) at the upper center.
3. The adjustable primary screening device according to claim 1, characterized in that: The handle (603) and the bidirectional lead screw (602) form a rotating structure, and one end of the feed hopper (5) is provided with a second slot that matches the external size structure of the connecting block (605). The bidirectional lead screw (602) and the threaded collar (604) form a linkage structure through the cooperation of the connecting block (605) and the second slot. At the same time, the two sides of the feed hopper (5) are provided with a third slot that matches the external size structure of the adjusting plate (606).
4. The adjustable primary screening device according to claim 1, characterized in that: The main motor (1502), main roller (1503) and main threaded rod (1504) form a rotating structure, and the main roller (1503), belt (1505) and auxiliary roller (1506) form a transmission structure. The main threaded rod (1504), auxiliary threaded rod (1507) and cleaning brush (1508) form a linkage structure. At the same time, threaded slots are opened at both ends of the upper part of one side of the cleaning brush (1508).
5. The adjustable primary screening device according to claim 1, characterized in that: A transparent observation window is provided on the front of the housing (1) between the quick-connect assembly (2) and the cover plate (10).
6. The adjustable primary screening device according to claim 1, characterized in that: A vibration motor is installed at the bottom of the screen (14), and the second spring (13) and the screen (14) form an elastic structure.
7. The adjustable primary screening device according to claim 1, characterized in that: The bottom sides of the unloading trough (9) are provided with second grooves that are consistent with the external dimensions of the limiting rod (8).