Camellia sinensis production sieve flower device

Abstract

The utility model discloses a kind of sieve flower devices for camellia sinensis production, comprising: U-shaped support seat, its bottom both sides are fixedly connected with two T-shaped seats, four T-shaped seats are used to support entire device;Screen frame, its top and left side are all set as opening, the bottom inner wall is set as inclined plane, the left side of screen frame is rotatably installed with the baffle matched with the opening of its left side, baffle is used to shield the left side opening of screen frame;Screen, it is two, and is embedded and fixed on the bottom inner wall of screen frame, screen is used to carry out screening operation to camellia sinensis.The utility model is set through a series of structures, can carry out screening operation to camellia sinensis, and after screening is completed, it is discharged by the way of blowing non-contact, can effectively the risk of camellia sinensis damage, and can directly carry out backblowing and clean impurities to screen after discharging, personnel does not need subsequent separate split cleaning, convenient personnel operation, to improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flower sieving equipment technology, and in particular to a flower sieving device for the production of Camellia chrysantha. Background Technology

[0002] Camellia chrysantha, an evergreen shrub belonging to the genus Camellia in the family Theaceae, is distributed in the limestone mountain evergreen forests of southern Guangxi, my country and northern Vietnam. It is a national second-class protected plant, preferring warm, humid conditions and well-drained, loose soil. It is intolerant of strong sunlight. During its growth, Camellia chrysantha requires the removal of internal impurities. Current technology typically uses vibrating screens for this purpose. However, vibrating screens have the following drawbacks: 1. After screening, the material cannot be discharged quickly, requiring manual operation, which carries the risk of damaging the Camellia chrysantha; 2. Residue easily gets stuck in the screen mesh after screening, requiring cleaning. Current technology requires manual removal of the screen for cleaning, which is inconvenient. In light of these issues, this application proposes a flower-sieving device for Camellia chrysantha production. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a flower sieving device for the production of Camellia chrysantha.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A flower sieving device for Camellia chrysantha production includes:

[0006] The U-shaped support base has two T-shaped supports fixedly connected to both sides of its bottom. The four T-shaped supports are used to support the entire device.

[0007] The screen frame has openings at the top and left side, and its bottom inner wall is inclined. A baffle that matches the opening on the left side of the screen frame is rotatably installed on the left side of the screen frame. The baffle is used to cover the opening on the left side of the screen frame.

[0008] Two sieves are embedded and fixed on the bottom inner wall of the sieve frame. The sieves are used to sieve Camellia chrysantha.

[0009] The transverse guide collision mechanism consists of two sets, which are respectively embedded in the front inner wall and the rear inner wall of the U-shaped support base, and are also fixedly connected to the front and rear sides of the screen frame. The transverse guide collision mechanism plays a transverse guiding role for the screen frame.

[0010] The circulating drive mechanism is embedded and fixed at the bottom of the screen frame and the bottom of the U-shaped support. The circulating drive mechanism is used to drive the screen frame left and right in a circulating manner.

[0011] The material discharge mechanism is fixedly installed on the inner right side of the screen frame. The material discharge mechanism is used to assist in the material discharge operation.

[0012] An air supply mechanism is fixedly installed on the right side of the screen frame and connected to the material discharge mechanism. The air supply mechanism is used to supply air into the material discharge mechanism.

[0013] The air blowing and slag removal mechanism is located below the screen frame and is connected to the air supply mechanism. The air blowing and slag removal mechanism is used to perform back-blowing cleaning of the screen.

[0014] The multi-stage electric telescopic rod is fixedly installed on the bottom right side of the screen frame. The left end of the output shaft of the multi-stage electric telescopic rod is fixedly connected to the right side of the air blowing and slag cleaning mechanism. The multi-stage electric telescopic rod is used to drive the air blowing and slag cleaning mechanism to move laterally.

[0015] Preferably, the lateral guiding collision mechanism includes guide blocks. The sides of the two guide blocks that are close to each other are fixedly connected to the front and rear sides of the screen frame, respectively. The inner walls of the front and rear sides of the U-shaped support are provided with mounting grooves. Two guide rods are fixedly connected between the inner walls of the two sides of the mounting groove. The guide blocks are slidably sleeved on the corresponding two guide rods. The guide blocks and guide rods cooperate to provide lateral guidance for the screen frame. Two collision blocks are fixedly sleeved on the two guide rods located in the same mounting groove. The guide blocks are located between the corresponding two collision blocks. The right side of the guide block is in active contact with the left side of the corresponding right-side collision block. The collision blocks are designed to collide with the guide blocks when they move laterally, thereby generating vibration force.

[0016] Preferably, the cyclic drive mechanism includes a rectangular box embedded and fixed at the bottom of the screen frame, the rectangular box being located between two screens, and extrusion balls embedded on both inner walls of the rectangular box. The two extrusion balls are in movable contact with the same eccentric wheel. A drive motor is embedded and fixed at the bottom of the U-shaped support base. The top end of the output shaft of the drive motor is fixedly connected to the bottom left side of the eccentric wheel. The drive motor is used to drive the eccentric wheel to rotate. The eccentric wheel and the two extrusion balls cooperate to drive the rectangular box to move left and right cyclically.

[0017] Preferably, the blowing and discharging mechanism includes a diversion box fixedly connected to the inner wall of the right side of the screen frame, and a plurality of downwardly inclined first air blowing heads are fixedly connected to the left side of the diversion box. The first air blowing heads discharge gas to blow and clean the Camellia chrysantha inside the screen frame.

[0018] Preferably, the air supply mechanism includes an air pump fixedly installed on the right side of the screen frame. The discharge end of the air pump is connected to a three-way pipe. The left and bottom ends of the three-way pipe are both connected to valves. The valve on the left side is connected to the right side of the distribution box and fixedly installed. The bottom of the valve at the bottom is connected to an L-shaped pipe and fixedly installed. The left end of the L-shaped pipe is connected to a telescopic hose.

[0019] Preferably, the air blowing and slag removal mechanism includes two horizontal tubes with sealed front and rear ends. The two horizontal tubes are respectively set on the bottom right side of the corresponding screen. Multiple second air blowing heads are fixedly connected to the top of the horizontal tubes. The two horizontal tubes are connected and fixedly connected by the same connecting pipe. A rectangular box is slidably sleeved on the connecting pipe. The left end of the output shaft of the multi-stage electric telescopic rod is fixedly connected to the right side of the right horizontal tube. The telescopic hose is fixedly connected to the right side of the right horizontal tube. The telescopic hose provides a lateral movement distance for the horizontal tube by utilizing its telescopic characteristics.

[0020] Preferably, the distance the eccentric wheel extrudes and drives the screen frame to move is the same as the distance between the guide block and the corresponding left-side collision block.

[0021] Preferably, two mounting holes are provided on the bottom inner wall of the sieve frame, and the inner wall of the mounting hole is fixedly connected to the outer side of the corresponding sieve mesh.

[0022] Compared with existing technologies, the beneficial effects of this utility model are:

[0023] 1. Through the cooperation of the cyclic drive mechanism and the transverse guide collision mechanism, the screen frame and screen can be driven to move left and right in a cyclic manner and vibrate to perform sieving operation on Camellia chrysantha.

[0024] 2. By coordinating the blowing and discharge mechanism and the air supply mechanism, the Camellia chrysantha can be assisted to be discharged to the outside by blowing air to the left after screening. The discharge mechanism does not require manual operation. The non-contact discharge method can effectively reduce the risk of damage to Camellia chrysantha.

[0025] 3. Through the cooperation of the air supply mechanism and the air blowing and slag removal mechanism, the screen can be cleaned by air blowing through electric drive, eliminating the need for personnel to disassemble and clean it separately afterward, which is convenient for personnel to operate;

[0026] This invention, through a series of structural designs, enables the screening of Camellia chrysantha. After screening, it assists in the discharge of material through a non-contact air blowing method, effectively reducing the risk of damage to the Camellia chrysantha. Furthermore, it allows for direct back-blowing to clean impurities from the screen after discharge, eliminating the need for separate disassembly and cleaning by personnel. This simplifies operation and improves work efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a flower sieving device for the production of Camellia chrysantha proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the main sectional view of a flower sieving device for Camellia chrysantha production proposed in this utility model;

[0029] Figure 3This is a cross-sectional structural diagram of the U-shaped support base and the connecting component of the transverse guide collision mechanism for a flower sieving device for Camellia chrysantha production proposed in this utility model.

[0030] In the diagram: 1. U-shaped support base; 2. Screen frame; 3. Baffle; 4. Mounting hole; 5. Screen mesh; 6. Circulation drive mechanism; 601. Rectangular box; 602. Drive motor; 603. Eccentric wheel; 604. Extrusion ball; 7. Air blowing and slag removal mechanism; 701. Multi-stage electric telescopic rod; 702. Horizontal pipe; 703. Connecting pipe; 704. Telescopic hose; 705. L-shaped pipe; 8. Diverter box; 801. First air blowing pipe head; 9. Air pump; 10. T-connector; 11. Valve; 12. Lateral guide collision mechanism; 1201. Mounting groove; 1202. Guide rod; 1203. Collision block; 1204. Guide block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Reference Figure 1-3 A flower sieving device for camellia production, comprising:

[0033] The U-shaped support base 1 has two T-shaped supports fixedly connected to both sides of its bottom, and the four T-shaped supports are used to support the entire device;

[0034] The screen frame 2 has openings on its top and left sides, and its bottom inner wall is inclined. A baffle 3 is rotatably installed on the left side of the screen frame 2 to match the opening on its left side. A connecting block is fixedly connected between the front inner wall and the rear inner wall of the screen frame 2. The top left side of the connecting block is threaded with the same hinge to the right side of the baffle 3. The baffle 3 is rotatably installed with the screen frame 2 through the hinge. The baffle 3 is used to cover the opening on the left side of the screen frame 2.

[0035] There are two sieves 5, which are embedded and fixed on the bottom inner wall of the sieve frame 2. The bottom inner wall of the sieve frame 2 has two mounting holes 4. The inner wall of the mounting hole 4 is fixedly connected to the outer side of the corresponding sieve 5. The sieve 5 is used to sieve the Camellia chrysantha.

[0036] The transverse guide collision mechanism 12 consists of two sets, which are respectively embedded in the front inner wall and the rear inner wall of the U-shaped support 1, and are also fixedly connected to the front and rear sides of the screen frame 2. The transverse guide collision mechanism 12 includes guide blocks 1204. The sides of the two guide blocks 1204 that are close to each other are fixedly connected to the front and rear sides of the screen frame 2, respectively. The front inner wall and the rear inner wall of the U-shaped support 1 are each provided with a mounting groove 1201. Two guide rods 1202 are fixedly connected between the two inner walls of the mounting groove 1201. The guide blocks 1204 are slidably sleeved on the corresponding two guide rods 1202. Two guide holes are provided on one side. The inner wall of the guide hole slides in contact with the outer side of the corresponding guide rod 1202. The guide block 1204 and the guide rod 1202 cooperate to provide lateral guidance for the screen frame 2. Two collision blocks 1203 are fixedly sleeved on the two guide rods 1202 located in the same mounting groove 1201. The guide block 1204 is located between the two corresponding collision blocks 1203. The right side of the guide block 1204 is in movable contact with the left side of the corresponding right collision block 1203. The collision block 1203 is designed to collide with the guide block 1204 when it moves laterally, thereby generating vibration force.

[0037] A circulating drive mechanism 6 is embedded and fixed at the bottom of the screen frame 2 and the bottom of the U-shaped support 1. The circulating drive mechanism 6 includes a rectangular box 601 embedded and fixed at the bottom of the screen frame 2. The inner wall of the bottom of the screen frame 2 has a mounting hole for fixing the rectangular box 601. The rectangular box 601 is located between two screens 5. Both inner walls of the rectangular box 601 are fitted with compression balls 604. The two compression balls 604 are in movable contact with the same eccentric wheel 603. Both sides of the bottom of the rectangular box 601 are fitted with multiple support balls. The bottom of the support balls is in movable contact with the inner wall of the bottom of the U-shaped support 1. The support balls are used to support the rectangular box 601 and the screen frame 2. A drive motor 6 is embedded and fixed at the bottom of the U-shaped support 1. 02, wherein the bottom of the U-shaped support 1 is provided with an insert groove for fixing and installing the drive motor 602, and a circular hole is provided on the top inner wall of the insert groove. A bearing is fixedly fitted in the circular hole. The inner side of the inner ring of the bearing is fixedly connected to the outer side of the output shaft of the drive motor 602. The bearing supports the output shaft of the drive motor 602. The top of the output shaft of the drive motor 602 is fixedly connected to the bottom left side of the eccentric wheel 603. The drive motor 602 is used to drive the eccentric wheel 603 to rotate. The eccentric wheel 603 and two extrusion balls 604 cooperate to drive the rectangular box 601 to move left and right in a cycle. The distance that the eccentric wheel 603 extrudes and drives the screen frame 2 to move is the same as the distance between the guide block 1204 and the corresponding left collision block 1203.

[0038] The material blowing and discharge mechanism is fixedly installed on the inner right side of the screen frame 2. The material blowing and discharge mechanism includes a diversion box 8 fixedly connected to the inner right side of the screen frame 2. The left side of the diversion box 8 is connected to a plurality of downwardly inclined first air blowing pipes 801. The first air blowing pipes 801 discharge gas to blow and clean the Camellia chrysantha inside the screen frame 2.

[0039] An air supply mechanism is fixedly installed on the right side of the screen frame 2 and connected to the material discharge mechanism. The air supply mechanism includes an air pump 9 fixedly installed on the right side of the screen frame 2. A three-way pipe 10 is fixedly connected to the discharge end of the air pump 9. A valve 11 is fixedly connected to the left end and the bottom end of the three-way pipe 10. The valve 11 on the left side is fixedly connected to the right side of the diversion box 8. An L-shaped pipe 705 is fixedly connected to the bottom of the valve 11 at the bottom. A telescopic hose 704 is fixedly connected to the left end of the L-shaped pipe 705.

[0040] The air blowing and slag removal mechanism 7 is located below the screen frame 2 and is connected to the air supply mechanism. The air blowing and slag removal mechanism 7 includes two horizontal pipes 702 with sealed front and rear ends. The two horizontal pipes 702 are respectively located on the bottom right side of the corresponding screen 5. Multiple second air blowing pipe heads are connected and fixed at the top of the horizontal pipes 702. The two horizontal pipes 702 are connected and fixed with the same connecting pipe 703. The rectangular box 601 is slidably sleeved on the connecting pipe 703. The inner walls on both sides of the rectangular box 601 are provided with a placement hole for slidingly sleeved on the outside of the connecting pipe 703. The telescopic hose 704 is connected and fixed to the right side of the right horizontal pipe 702. The telescopic hose 704 provides a lateral movement distance for the horizontal pipe 702 by utilizing its telescopic characteristics.

[0041] The multi-stage electric telescopic rod 701 has a mounting base fixedly connected to the bottom right side of the sieve frame 2. The telescopic hose 704 is located in front of the mounting base. The bottom of the mounting base is fixedly connected to the top left side of the multi-stage electric telescopic rod 701. The mounting base is used to support the multi-stage electric telescopic rod 701. The left end of the output shaft of the multi-stage electric telescopic rod 701 is fixedly connected to the right side of the horizontal tube 702 on the right side. The multi-stage electric telescopic rod 701 is used to drive the two horizontal tubes 702 to move laterally. This utility model, through a series of structural settings, can perform sieving operations on Camellia chrysantha. After sieving, it can assist in discharging the material through a non-contact air blowing method, which can effectively reduce the risk of damage to Camellia chrysantha. Moreover, it can directly back-blow and clean impurities from the sieve screen 5 after discharging, without the need for subsequent separate disassembly and cleaning by personnel, which is convenient for personnel operation and thus improves work efficiency.

[0042] Working Principle: During use, when sifting the flowers of Camellia chrysantha, the multi-stage electric telescopic rod 701 is first activated in the forward direction, driving the two horizontal tubes 702 to move slightly to the left, providing the rectangular box 601 with the distance to move to the left. Next, the drive motor 602 is activated, and its output shaft drives the eccentric wheel 603 to rotate. When the eccentric wheel 603 rotates the first half turn, it compresses the left-side compression ball bearings 604. Under this pressure, the left-side compression ball bearings move the rectangular box 601 to the left. When the eccentric wheel 603 rotates the second half turn, it compresses the right-side compression ball bearings, causing the rectangular box 601 to move to the right. The eccentric wheel 603 continues to rotate, causing the rectangular box 601 to move cyclically left and right. 1 drives the sieve frame 2 to move left and right in a cycle. The sieve frame 2 drives two guide blocks 1204 to slide on the corresponding guide rods 1202. While the guide blocks 1204 move left and right in a cycle, they collide with the collision blocks 1203 on both sides. Under the collision force, the guide blocks 1204 generate vibration force. The guide blocks 1204 drive the sieve frame 2 to generate vibration force, so that the sieve frame 2 moves left and right in a cycle and vibrates. At the same time, golden camellia is poured into the sieve frame 2. While the sieve frame 2 moves left and right in a cycle and vibrates, the impurities in the golden camellia can be screened out, so that the impurities fall onto the bottom inner wall of the U-shaped support seat 1, thereby realizing the screening operation of golden camellia. The impurities inside the U-shaped support seat 1 can be cleaned out later using an external lever after screening.

[0043] After sieving, when the sieving Camellia chrysantha needs to be removed, a collection box can be placed on the left side of the sieve frame 2, and the baffle 3 can be rotated upward to remove the obstruction on the left side of the sieve frame 2. At the same time, the air pump 9 and the valve 11 on the left side are turned on. The air pump 9 draws in the external gas, and the drawn gas enters the diversion box 8 through the three-way pipe 10 and the valve 11 on the left side. The gas inside the diversion box 8 is discharged through multiple first air blowing pipes 801 to blow the Camellia chrysantha inside the sieve frame 2. Under the blowing force, the Camellia chrysantha is discharged along the inclined surface of the bottom inner wall of the sieve frame 2 into the collection box. By using the air blowing to assist in the discharge, there is no need for personnel to manually move the discharge. The non-contact air blowing discharge method can effectively reduce the risk of damage to the Camellia chrysantha.

[0044] After the golden camellia is discharged, the lower valve 11 is opened, and the multi-stage electric telescopic rod 701 is activated in reverse to drive the two horizontal pipes 702 to move to the right and reset. Then, the multi-stage electric telescopic rod 701 is opened in the forward direction again, so that its output shaft drives the right horizontal pipe 702 to move to the left and stretches the telescopic hose 704. The right horizontal pipe 702 drives the left horizontal pipe 702 to move to the left through the connecting pipe 703. At the same time, a part of the gas inside the three-way pipe 10 also enters the right horizontal pipe 702 in sequence through the lower valve 11, L-shaped pipe 705 and telescopic hose 704. The right horizontal pipe 702 A portion of the gas inside enters the horizontal pipe 702 on the left side through the connecting pipe 703. The gas inside the horizontal pipe 702 is discharged through multiple corresponding second air blowing heads to back-blow the screen 5 from the bottom. At the same time, with the leftward movement of the horizontal pipe 702, the mesh of the screen 5 can be fully back-blown. Under the back-blowing force, the impurities stuck in the mesh of the screen 5 can be effectively blown out. In addition, with the leftward blowing force of multiple first air blowing heads 801, the blown impurities are discharged to the left side. By cleaning the screen 5 by blowing air, there is no need for personnel to disassemble and clean it separately afterward, which is convenient for personnel to operate and thus improves work efficiency.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flower sieving device for Camellia chrysantha production, comprising a U-shaped support base (1), characterized in that, include: The U-shaped support (1) has two T-shaped seats fixedly connected to both sides of its bottom; The sieve frame (2) has openings on its top and left sides, and its bottom inner wall is set as an inclined surface. A baffle (3) that matches the opening on the left side of the sieve frame (2) is rotatably installed on its left side. Two sieves (5) are embedded and fixed on the bottom inner wall of the sieve frame (2); The transverse guide collision mechanism (12) consists of two sets, which are respectively embedded in the front inner wall and the rear inner wall of the U-shaped support (1), and are also fixedly connected to the front and rear sides of the screen frame (2). The circulating drive mechanism (6) is embedded and fixed at the bottom of the screen frame (2) and the bottom of the U-shaped support (1); The material discharge mechanism is fixedly installed on the inner right side of the screen frame (2); The air supply mechanism is fixedly installed on the right side of the screen frame (2) and connected to the material discharge mechanism; The air blowing and slag removal mechanism (7) is located below the screen frame (2) and is connected to the air supply mechanism; A multi-stage electric telescopic rod (701) is fixedly installed on the bottom right side of the screen frame (2), and the left end of the output shaft of the multi-stage electric telescopic rod (701) is fixedly connected to the right side of the air blowing and slag cleaning mechanism.

2. The flower sieving device for Camellia chrysantha production according to claim 1, characterized in that, The transverse guide collision mechanism (12) includes guide blocks (1204). The two guide blocks (1204) are fixedly connected to the front and rear sides of the screen frame (2) respectively on their sides. The inner walls of the front and rear sides of the U-shaped support (1) are provided with mounting grooves (1201). Two guide rods (1202) are fixedly connected between the inner walls of the two sides of the mounting groove (1201). The guide blocks (1204) are slidably sleeved on the corresponding two guide rods (1202). Two collision blocks (1203) are fixedly sleeved on the two guide rods (1202) located in the same mounting groove (1201). The guide blocks (1204) are located between the corresponding two collision blocks (1203). The right side of the guide block (1204) is in active contact with the left side of the corresponding right collision block (1203).

3. The flower sieving device for Camellia chrysantha production according to claim 1, characterized in that, The circulating drive mechanism (6) includes a rectangular box (601) embedded and fixed at the bottom of the screen frame (2). The rectangular box (601) is located between two screens (5). Both sides of the inner wall of the rectangular box (601) are fitted with extrusion balls (604). The two extrusion balls (604) are in movable contact with the same eccentric wheel (603). The bottom of the U-shaped support (1) is fitted and fixed with a drive motor (602). The top of the output shaft of the drive motor (602) is fixedly connected to the bottom left side of the eccentric wheel (603).

4. The flower sieving device for Camellia chrysantha production according to claim 1, characterized in that, The material blowing and discharge mechanism includes a diversion box (8) fixedly connected to the inner wall of the right side of the screen frame (2), and a plurality of downwardly inclined first air blowing pipe heads (801) are fixedly connected to the left side of the diversion box (8).

5. A flower sieving device for Camellia chrysantha production according to claim 4, characterized in that, The air supply mechanism includes an air pump (9) fixedly installed on the right side of the screen frame (2). The discharge end of the air pump (9) is connected to a three-way pipe (10). The left end and the bottom end of the three-way pipe (10) are both connected to valves (11). The valve (11) on the left side is connected to the right side of the diversion box (8). The bottom of the valve (11) at the bottom is connected to an L-shaped pipe (705). The left end of the L-shaped pipe (705) is connected to a telescopic hose (704).

6. A flower sieving device for Camellia chrysantha production according to claim 5, characterized in that, The air blowing and slag removal mechanism (7) includes two horizontal tubes (702) with sealed front and rear ends. The two horizontal tubes (702) are respectively set on the bottom right side of the corresponding screen (5). Multiple second air blowing heads are connected and fixed at the top of the horizontal tubes (702). The two horizontal tubes (702) are connected and fixed with the same connecting pipe (703). The rectangular box (601) is slidably sleeved on the connecting pipe (703). The left end of the output shaft of the multi-stage electric telescopic rod (701) is fixedly connected to the right side of the right horizontal tube (702). The telescopic hose (704) is connected and fixed to the right side of the right horizontal tube (702).

7. A flower sieving device for Camellia chrysantha production according to claim 3, characterized in that, The distance that the eccentric wheel (603) squeezes and drives the screen frame (2) to move is the same as the distance between the guide block (1204) and the corresponding left collision block (1203).

8. A flower sieving device for Camellia chrysantha production according to claim 1, characterized in that, Two mounting holes (4) are provided on the bottom inner wall of the sieve frame (2), and the inner wall of the mounting hole (4) is fixedly connected to the outer side of the corresponding sieve (5).

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