Tea classifying and screening device

Abstract

The utility model discloses a tea leaf grading and screening device, which belongs to the technical field of tea leaf processing, and comprises a grading and screening box body, the top of the grading and screening box body is connected with a feeding cover, the side surface of the feeding cover is provided with an annular fixing plate, and the interior of the annular fixing plate is connected with a telescopic rod; a first motor is installed on a movable part of the telescopic rod, an output shaft of the first motor is connected with a rotating wheel used for preventing tea from being blocked, a tea feeding cover used for allowing tea to enter is installed at the end, away from the grading screening box body, of the feeding cover, and a baffle is connected to the vertical inner wall of the grading screening box body. And a first screening plate is arranged on the side face of the baffle, a vibration block is installed at the bottom of the first screening plate, the tea leaf grading screening device enables the thickness of tea leaves to be more uniform when the tea leaves enter the device, the screening precision is improved, the equipment stability is enhanced, and the screening efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of tea processing technology, and in particular to a tea grading and screening device. Background Art

[0002] In the tea production process, tea leaves need to be graded and sorted to separate leaves of different sizes to meet diverse market demands. Traditional tea grading and sorting devices are typically simple in structure, have low sorting efficiency, and are prone to clogging, affecting the sorting effect. Existing tea grading and sorting devices can meet basic grading and sorting requirements, but the uneven thickness of the tea leaves entering the device affects sorting accuracy, equipment stability, and reduces sorting efficiency.

[0003] A search revealed Chinese patent document (authorization announcement number CN220804360U), which relates to the field of screening devices. This utility model discloses a tea grading and screening device, including a base, a box placed on top of the base, and a frame fixedly installed in the middle of the box. Vibrators are fixedly installed on both sides of the box, and a cover plate is fixedly installed on the top of the box. This utility model, through the use of sleeves, springs, and universal joints, allows the box to be positioned correctly during use. The spring's reaction force on the support blocks provides force to the box via the inner rod. Multiple mechanisms allow for proper placement of the box. Whenever the vibrators operate, the inner rod extends and retracts adaptively, and the springs deform adaptively, causing the box to swing irregularly. This, in turn, causes the tea material on the screening screen to oscillate, effectively improving the tea screening efficiency. While this tea grading and screening device can meet basic grading and screening requirements, the uneven thickness of the tea entering the device affects screening accuracy, equipment stability, and reduces screening efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a tea grading and screening device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tea grading and screening device, comprising a grading and screening box body, a feeding hood connected to the top of the grading and screening box body, an annular fixing plate installed on the side of the feeding hood, a telescopic rod connected inside the annular fixing plate, a first motor installed on the movable part of the telescopic rod, a rotating wheel connected to the output shaft of the first motor for preventing tea from clogging, a tea feeding hood for tea to enter installed at the end of the feeding hood away from the grading and screening box body, a baffle connected to the vertical inner wall of the grading and screening box body, a first screening plate provided on the side of the baffle, and a vibration block installed at the bottom of the first screening plate.

[0006] Preferably, a second motor is mounted on the side of the baffle, and the output shaft of the second motor is connected to a cam.

[0007] Preferably, a scrap recycling box is installed at the bottom of the baffle, and a scrap inlet is provided at the top of the scrap recycling box.

[0008] Preferably, a support column is connected to the top wall of the grading and screening box body, a spring is provided on the outer periphery of the support column, a slider is connected above the spring, a second screening plate is installed on the side of the slider, and a guide plate is provided above the second screening plate.

[0009] Preferably, a semi-circular block is mounted on the side of the slider, a third motor is mounted on the outer periphery of the support column, and the output shaft of the third motor is connected to a lead screw.

[0010] Preferably, a movable block is engaged with the outer periphery of the lead screw, a connecting block is installed on one side of the movable block, a guide post is slidably installed on the side of the connecting block, and a striking block is installed on the other side of the movable block.

[0011] Preferably, the grading and screening box body is internally equipped with a first grading and recycling plate and a second grading and recycling plate.

[0012] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0013] This tea grading and screening device benefits from the structure of the rotating wheel. By adjusting the length of the telescopic rod, the distance between the rotating wheel and the feed hood can be controlled, thereby adjusting the amount of tea fed in. The first motor is turned on, and the output shaft of the first motor drives the rotating wheel to rotate, preventing tea from clogging. Compared with the traditional method of directly feeding tea into the grading and screening device, which is prone to clogging, this structure makes the thickness of the tea more uniform when it enters the device, improving screening accuracy, enhancing equipment stability, and increasing screening efficiency.

[0014] This tea grading and screening device benefits from the structure of the semi-circular block and the striking block. The output shaft of the third motor drives the lead screw to rotate, and the lead screw drives the moving block and the connecting block to reciprocate. The moving block drives the striking block to contact the semi-circular block, and the slider and the second screening plate vibrate. This structure allows the second screening plate to move up and down reciprocatingly, making the tea screening more uniform. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the first screening plate of this utility model;

[0019] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0020] Explanation of reference numerals in the attached figures:

[0021] In the diagram: 1. Grading and screening box body; 101. Tea inlet hood; 102. Feed hood; 103. Annular fixing plate; 104. Telescopic rod; 105. First motor; 106. Rotating wheel; 107. First grading and recycling plate; 108. Second grading and recycling plate; 2. First screening plate; 201. Second motor; 202. Cam; 203. Vibrating block; 204. Baffle; 205. Crushed material recycling box; 206. Crushed material inlet; 207. Guide plate; 208. Second screening plate; 3. Third motor; 301. Support column; 302. Spring; 303. Slider; 304. Semicircular block; 305. Impact block; 306. Lead screw; 307. Guide column; 308. Connecting block; 309. Moving block. DETAILED DESCRIPTION

[0022] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0023] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0024] like Figures 1 to 4The tea grading and screening device shown includes a grading and screening box body 1. A feeding hood 102 is connected to the top of the grading and screening box body 1. Tea leaves are poured into the feeding hood 102 from the tea feeding hood 101. An annular fixing plate 103 is installed on the side of the feeding hood 102. A telescopic rod 104 is connected inside the annular fixing plate 103. A first motor 105 is installed on the movable part of the telescopic rod 104. The output shaft of the first motor 105 is connected to a rotating wheel 106 to prevent tea leaf blockage. Adjusting the length of the telescopic rod 104 controls the distance between the rotating wheel 106 and the feeding hood 102, thus adjusting the amount of tea leaves fed. The first motor 105 is then turned on. 5. The output shaft of the first motor 105 drives the rotating wheel 106 to rotate, preventing tea leaves from clogging. The tea leaves enter the first screening plate 2 inside the grading and screening box body 1 through the feeding hood 102. A tea feeding hood 101 for tea leaves to enter is installed at the end of the feeding hood 102 away from the grading and screening box body 1. A baffle 204 is connected to the vertical inner wall of the grading and screening box body 1. The first screening plate 2 is provided on the side of the baffle 204. A slider is installed on the side of the first screening plate 2. The side of the baffle 204 has a groove that cooperates with the slider on the side of the first screening plate 2 to facilitate the reciprocating movement of the first screening plate 2. A vibrating block 203 is installed at the bottom of the first screening plate 2.

[0025] A second motor 201 is installed on the side of the baffle 204. The output shaft of the second motor 201 is connected to a cam 202. A scrap collection box 205 is installed at the bottom of the baffle 204. A scrap inlet 206 is provided at the top of the scrap collection box 205. When the second motor 201 is turned on, the output shaft of the second motor 201 drives the cam 202 to rotate. The cam 202 strikes the vibrating block 203, and the vibrating block 203 vibrates. Tea impurities and scraps fall into the baffle 204 through the holes on the first screening plate 2. The scraps enter the scrap collection box 205 for collection through the scrap inlet 206.

[0026] A support column 301 is connected to the top wall of the grading and screening box body 1. A spring 302 is provided on the outer periphery of the support column 301. A slider 303 is connected above the spring 302. A second screening plate 208 is installed on the side of the slider 303. A guide plate 207 is provided above the second screening plate 208. Grading holes are provided on the surface of the second screening plate 208. Tea leaves fall onto the second screening plate 208 through the guide plate 207. A semi-circular block 304 is installed on the side of the slider 303. A third motor 3 is installed on the outer periphery of the support column 301. A lead screw 306 is connected to the output shaft of the third motor 3. When the third motor 3 is turned on, the output shaft of the third motor 3 drives the lead screw 306 to rotate. The lead screw 306 drives the moving block 309 and the connecting block 308 to reciprocate. The moving block 309 drives the striking block 305 to contact the semi-circular block 304, and the slider 303 and the second screening plate 208 vibrate.

[0027] A movable block 309 is meshed with the outer periphery of the lead screw 306. A connecting block 308 is installed on one side of the movable block 309. A guide post 307 is slidably installed on the side of the connecting block 308. A striking block 305 is installed on the other side of the movable block 309. A first grading and recycling plate 107 and a second grading and recycling plate 108 are installed inside the grading and screening box body 1. After the tea leaves are second-graded and screened, they are discharged and collected through the first grading and recycling plate 107. The second grading and recycling plate 108 is used to discharge finer tea leaves, and the first grading and recycling plate 107 is used to discharge tea leaves that are coarser than the second grading and recycling plate 108.

[0028] How it works

[0029] In use, the tea grading and screening device first pours tea leaves from the tea inlet hood 101 into the feed hood 102. The length of the telescopic rod 104 is adjusted to control the distance between the rotating wheel 106 and the feed hood 102, thus adjusting the tea feed rate. The first motor 105 is then turned on, and its output shaft drives the rotating wheel 106 to rotate, preventing tea blockage. The tea leaves pass through the feed hood 102 and enter the first screening plate 2 inside the grading and screening box body 1. The second motor 201 is then turned on, and its output shaft drives the cam 202 to rotate. The cam 202 strikes the vibrating block 203. Vibration is generated, and tea impurities and fragments fall into the baffle 204 through the holes on the first screening plate 2. The fragments enter the fragment collection box 205 through the fragment inlet 206 for collection. The tea leaves fall onto the second screening plate 208 through the guide plate 207. The third motor 3 is turned on, and the output shaft of the third motor 3 drives the lead screw 306 to rotate. The lead screw 306 drives the moving block 309 and the connecting block 308 to reciprocate. The moving block 309 drives the striking block 305 to contact the semi-circular block 304. The slider 303 and the second screening plate 208 vibrate. After secondary grading and screening, the tea leaves are discharged and collected through the first grading collection plate 107.

[0030] It should be noted that in this article, relational terms such as one and two are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tea grading and screening device, comprising a grading and screening box body (1), characterized in that: The top of the grading and screening box body (1) is connected to a feeding hood (102), and an annular fixing plate (103) is installed on the side of the feeding hood (102). A telescopic rod (104) is connected inside the annular fixing plate (103). A first motor (105) is installed on the movable part of the telescopic rod (104). The output shaft of the first motor (105) is connected to a rotating wheel (106) for preventing tea leaves from clogging. A tea feeding hood (101) for tea leaves to enter is installed at the end of the feeding hood (102) away from the grading and screening box body (1). A baffle (204) is connected to the vertical inner wall of the grading and screening box body (1). A first screening plate (2) is provided on the side of the baffle (204). A vibration block (203) is installed at the bottom of the first screening plate (2).

2. The tea grading and screening device according to claim 1, characterized in that: A second motor (201) is mounted on the side of the baffle (204), and the output shaft of the second motor (201) is connected to a cam (202).

3. The tea grading and screening device according to claim 2, characterized in that: The bottom of the baffle (204) is equipped with a scrap recycling box (205), and the top of the scrap recycling box (205) is provided with a scrap inlet (206).

4. The tea grading and screening device according to claim 1, characterized in that: The top wall of the grading screening box body (1) is connected to a support column (301). A spring (302) is provided on the outer periphery of the support column (301). A slider (303) is connected above the spring (302). A second screening plate (208) is installed on the side of the slider (303). A guide plate (207) is provided above the second screening plate (208).

5. The tea grading and screening device according to claim 4, characterized in that: A semi-circular block (304) is installed on the side of the slider (303), and a third motor (3) is installed on the outer periphery of the support column (301). The output shaft of the third motor (3) is connected to a lead screw (306).

6. The tea grading and screening device according to claim 5, characterized in that: The outer periphery of the lead screw (306) is meshed with a moving block (309), a connecting block (308) is installed on one side of the moving block (309), a guide post (307) is slidably installed on the side of the connecting block (308), and a striking block (305) is installed on the other side of the moving block (309).

7. The tea grading and screening device according to claim 1, characterized in that: The first grading and recycling plate (107) and the second grading and recycling plate (108) are installed inside the grading and screening box body (1).

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