Multi-stage discharging screening machine

Abstract

The utility model discloses a multi-stage discharging screening machine, which belongs to the technical field of screening devices and comprises a vibrating screening machine main body, and a material distributing device and a cleaning device are mounted on the vibrating screening machine main body. The cleaning device comprises a guide assembly and a scraping assembly, the guide assembly and the scraping assembly are both connected with the vibrating screen classifier body, and the guide assembly is connected with the scraping assembly. Through the mode, the scraping component is driven by the guide component to scrape the screen, so that tea adhered to the screen is cleaned and falls off, and the cleaning period of the screen is prolonged; through the arrangement of the first screen and the second screen, the tea leaves can be subjected to multi-stage screening and discharging; the tea leaves at the feeding port are separated through the material distributing device, so that the clustered tea leaves are dispersed, and the screening effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a multi-stage discharging screening machine. Background Art

[0002] Tea has a long history in my country. The production of tea generally includes picking, shaking, withering, rolling, drying, screening and other processes. Screening is to filter out impurities and substandard tea leaves in the tea. Currently, tea screening generally includes manual screening and mechanical screening.

[0003] For example, Chinese patent CN106670096A discloses a vibrating screening machine, which includes a body support and a screening machine body. The screening machine body is mounted on the body support through spring supports on both sides, and the spring supports are connected to the screening machine body through an axle tube. A feed port is provided on the screening machine body, and the feed port is located at the upper right corner of the screening machine body. Screen holes are provided on the screening machine body, and a first discharge port is provided below the screen holes. A second discharge port is provided on the screening machine body, and a vibration motor is connected to the screening machine body through a motor base. The present invention is simple to operate, and the screening machine body has strong impact resistance. The vibration motors are located on both sides of the screening machine, which greatly reduces the difficulty of repairing accidental motor failures. The motor adopts a high-frequency vibration motor, which improves the working efficiency of the screening machine. Because the screen holes have high selectivity, they can be collected by classification, thereby reducing enterprise costs.

[0004] However, the vibrating screening machine can only screen tea leaves into two categories, and the screen cannot be cleaned after screening. The filter needs to be disassembled and cleaned regularly. After the tea leaves enter from the feed port, they easily clump and roll down, resulting in incomplete screening.

[0005] Based on this, the utility model designs a multi-stage discharging screening machine to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a screening machine with multi-stage discharging.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A multi-stage discharging screening machine comprises a vibration screening machine body,

[0009] The main body of the vibrating screening machine is equipped with a material dividing device and a cleaning device;

[0010] The cleaning device comprises a guide assembly and a scraping assembly, both of which are connected to the vibration screening machine body, and the guide assembly is connected to the scraping assembly.

[0011] Furthermore, the main body of the vibrating screening machine is the main part of an inclined vibrating screen, which is the prior art. The main body of the vibrating screening machine includes a first screen and a second screen. The first screen and the second screen are located on the inner side above the main body of the vibrating screening machine. The first screen is located above the second screen, and the sieve holes on the first screen are larger than the sieve holes on the second screen.

[0012] Furthermore, the material dividing device includes a material dividing assembly and a driving assembly, and the material dividing assembly and the driving assembly are connected to the vibration screening machine body.

[0013] Furthermore, the material dividing assembly includes a feed baffle, a material dividing top plate and a material dividing baffle. The feed baffle is fixedly connected to the left inner wall of the feed port of the vibration screening machine body, and the material dividing top plate is fixedly installed above the right side of the feed port of the vibration screening machine body. There are multiple material dividing baffles, and the material dividing baffles are fixedly installed in an inclined state below the material dividing top plate. The gap formed at the left ends of the multiple material dividing baffles is smaller than the gap formed at the right ends.

[0014] Furthermore, the driving assembly includes a guide roller, a conveyor belt, a first motor bracket, a first motor, a pulley and a belt. There are two guide rollers and pulleys, one guide roller is located below the feed baffle, and the other guide roller is located below the right end of the material distribution baffle and at the left end of the first screen. The guide roller is rotatably connected to the inner side wall of the feed port of the vibration screening machine body, and the conveyor belt is transmission-connected to the side walls of the two guide rollers. One ends of the two guide rollers are respectively fixedly connected to the two pulleys, and the pulleys are rotatably installed on the front end outer side wall of the vibration screening machine body. The two pulleys are connected through belt transmission, and the center of one pulley is fixedly connected to the output end of the first motor. The first motor is fixedly installed on the first motor bracket, and the first motor bracket is fixedly installed on the front end outer side wall of the vibration screening machine body.

[0015] Furthermore, the guide assembly includes a left bracket, a second motor, a first slider, a threaded rod, a right bracket and a second slider. The left bracket is fixedly mounted on the front end outer wall of the vibration screening machine body, the second motor is fixedly mounted on the left side of the left bracket, one end of the threaded rod is rotatably connected to the right side of the left bracket, the other end of the threaded rod is rotatably connected to the right bracket, the first slider is threadedly connected to the threaded rod, the first slider is slidably connected to the vibration screening machine body, the first slider is connected to the scraping assembly, the right bracket is fixedly mounted on the front end right outer wall of the vibration screening machine body, the second slider is slidably connected to the rear end outer wall of the vibration screening machine body, the second slider is connected to the scraping assembly, and the front and rear end side walls of the vibration screening machine body are provided with through grooves corresponding to the first slider and the second slider.

[0016] Furthermore, the scraping assembly includes a fixed plate, an upper linkage rod, a lower linkage rod, a scraper, a scraper, gears and a third motor. There are two fixed plates, the two fixed plates are fixedly connected to the first slider and the second slider respectively, the fixed plate is slidably connected to the vibration screening machine body, the two ends of the upper linkage rod are rotatably connected to the two fixed plates respectively, one end of the lower linkage rod is rotatably connected to a fixed plate, the other end of the lower linkage rod is fixedly connected to the output end of the third motor, the third motor is fixedly mounted on another fixed plate, there are two gears, the two gears are fixedly mounted on the upper linkage rod and the lower linkage rod respectively, the two gears are meshed with each other, two scrapers and two scrapers are each provided, the two scrapers are fixedly mounted on one side of the upper linkage rod and the lower linkage rod respectively, the scraper is located on the left side of the middle part of the first screen and the second screen, and the two scrapers are fixedly mounted on the right ends of the two scrapers respectively.

[0017] Furthermore, the cleaning device also includes an air jet assembly, which is connected to the fixing plate.

[0018] Furthermore, the jet assembly includes an air pipe and an air nozzle, the two ends of the air pipe are respectively fixedly connected to two fixed plates, there are multiple air nozzles, and the air nozzles are evenly fixedly installed above and below the air pipe, corresponding through holes are opened on the scraper, and pipes corresponding to the air pipe are opened inside the first slider and the fixed plate fixedly connected to the first slider, and a vent is opened on the first slider.

[0019] Beneficial Effects

[0020] 1. The utility model uses the guide component to drive the scraping component to scrape the screen, so that the tea leaves adhering to the screen are cleaned and dropped, thereby extending the cleaning cycle of the screen;

[0021] 2. The utility model provides the first screen and the second screen so that tea leaves can be screened out in multiple levels;

[0022] 3. The utility model separates the tea leaves at the feed inlet through the material separation device, so that the clumped tea leaves are dispersed and the screening effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The utility model is a multi-stage discharging screening machine main structure three-dimensional Figure 1 ;

[0025] Figure 2 This is a front view of the structure of a multi-stage discharging screening machine of the utility model;

[0026] Figure 3 This is a left view of the structure of a multi-stage discharging screening machine of the utility model;

[0027] Figure 4 The utility model is a multi-stage discharging screening machine main structure three-dimensional Figure 2 ;

[0028] Figure 5 For along Figure 2 AA direction cross-sectional view;

[0029] Figure 6 For along Figure 3 BB direction cross-sectional view;

[0030] Figure 7 for Figure 6 Enlarged view of point C in the middle.

[0031] The numbers in the figure represent:

[0032] 1. Vibrating screening machine body; 11. First screen; 12. Second screen; 2. Material distribution device; 21. Material distribution assembly; 211. Feed baffle; 212. Material distribution top plate; 213. Material distribution baffle; 22. Driving assembly; 221. Guide roller; 222. Conveyor belt; 223. First motor bracket; 224. First motor; 225. Pulley; 226. Belt; 3. Cleaning device; 31. Guide assembly; 311. Left bracket; 312. Second motor; 313. First slider; 314. Threaded rod; 315. Right bracket; 316. Second slider; 32. Scraping assembly; 321. Fixed plate; 322. Upper linkage rod; 323. Lower linkage rod; 324. Scraper; 325. Scraper; 326. Gear; 327. Third motor; 33. Jet assembly; 331. Air pipe; 332. Jet nozzle. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] The utility model is further described below in conjunction with embodiments.

[0035] In some embodiments, please refer to the attached instructions. Figure 1-7 A multi-stage discharging screening machine includes a vibrating screening machine body 1, on which a material dividing device 2 and a cleaning device 3 are installed; the cleaning device 3 includes a guide assembly 31 and a scraping assembly 32, both of which are connected to the vibrating screening machine body 1, and the guide assembly 31 is connected to the scraping assembly 32.

[0036] In the embodiment of the utility model, the guide assembly 31 drives the scraping assembly 32 to scrape the screen on the vibration screening machine body 1;

[0037] In the embodiment of the utility model, the tea leaves stuck in the screen are scraped off, so the cycle of disassembling the screen for cleaning can be extended.

[0038] In some embodiments, Figure 1-7 As shown, as a preferred embodiment of the utility model, the vibration screening machine body 1 is the main part of the inclined vibration screen, which is the prior art. The vibration screening machine body 1 includes a first screen 11 and a second screen 12. The first screen 11 and the second screen 12 are located on the inner side above the vibration screening machine body 1, the first screen 11 is located above the second screen 12, and the screen holes on the first screen 11 are larger than the screen holes on the second screen 12.

[0039] The material dividing device 2 includes a material dividing component 21 and a driving component 22 , and the material dividing component 21 and the driving component 22 are connected to the vibration screening machine body 1 .

[0040] The material dividing assembly 21 includes a feed baffle 211, a material dividing top plate 212 and a material dividing baffle 213. The feed baffle 211 is fixedly connected to the inner wall on the left side of the feed port of the vibration screening machine body 1. The material dividing top plate 212 is fixedly installed above the right side of the feed port of the vibration screening machine body 1. There are multiple material dividing baffles 213. The material dividing baffles 213 are fixedly installed in an inclined state below the material dividing top plate 212. The gap formed at the left ends of the multiple material dividing baffles 213 is smaller than the gap formed at the right ends.

[0041] The driving assembly 22 includes a guide roller 221, a conveyor belt 222, a first motor bracket 223, a first motor 224, a pulley 225 and a belt 226. There are two guide rollers 221 and pulleys 225. One guide roller 221 is located below the feed baffle 211, and the other guide roller 221 is located below the right end of the material distribution baffle 213 and at the left end of the first screen 11. The guide roller 221 is rotatably connected to the inner side wall of the feed port of the vibration screening machine body 1, and the conveyor belt 222 is transmission-connected to the side walls of the two guide rollers 221. One ends of the two guide rollers 221 are respectively fixedly connected to the two pulleys 225, and the pulleys 225 are rotatably installed on the front outer side wall of the vibration screening machine body 1. The two pulleys 225 are transmission-connected through the belt 226. The center of one pulley 225 is fixedly connected to the output end of the first motor 224. The first motor 224 is fixedly installed on the first motor bracket 223, and the first motor bracket 223 is fixedly installed on the front outer side wall of the vibration screening machine body 1.

[0042] In the embodiment of the utility model, tea leaves enter from the feed port of the vibration screening machine body 1, and the feed baffle 211 prevents the tea leaves from entering the interior of the vibration screening machine body 1 through the guide roller 221. The first motor 224 is started, and the two guide rollers 221 rotate synchronously driven by the pulley 225 and the belt 226. The conveyor belt 222 drives the tea leaves to be separated by the material separation baffle 213. Under the action of the vibration screening machine body 1, smaller tea leaves and impurities pass through the first screen 11 and fall into the second screen 12, and smaller impurities pass through the second screen 12 and fall to the bottom layer.

[0043] In the embodiment of the utility model, the clumped tea leaves can be dispersed and spread out when entering the first screen 11, thereby improving the screening effect. The screening of the first screen 11 and the second screen 12 divides the tea leaves into three categories, realizing multi-stage screening.

[0044] In some embodiments, Figure 1-7As shown, as a preferred embodiment of the utility model, the guide assembly 31 includes a left bracket 311, a second motor 312, a first slider 313, a threaded rod 314, a right bracket 315 and a second slider 316. The left bracket 311 is fixedly mounted on the front outer side wall of the vibration screening machine body 1, the second motor 312 is fixedly mounted on the left side of the left bracket 311, one end of the threaded rod 314 is rotatably connected to the right side of the left bracket 311, and the other end of the threaded rod 314 is rotatably connected to the right side of the left bracket 315. The first slider 313 is threadedly connected to the threaded rod 314, the first slider 313 is slidably connected to the vibration screening machine body 1, the first slider 313 is connected to the scraping assembly 32, the right bracket 315 is fixedly mounted on the front right outer side wall of the vibration screening machine body 1, the second slider 316 is slidably connected to the rear outer side wall of the vibration screening machine body 1, the second slider 316 is connected to the scraping assembly 32, and the front and rear end side walls of the vibration screening machine body 1 are provided with through grooves corresponding to the first slider 313 and the second slider 316.

[0045] The scraping assembly 32 includes a fixed plate 321, an upper linkage rod 322, a lower linkage rod 323, a scraper 324, a scraper 325, a gear 326 and a third motor 327. There are two fixed plates 321, the two fixed plates 321 are respectively fixedly connected to the first slider 313 and the second slider 316, the fixed plates 321 are slidably connected to the vibration screening machine body 1, the two ends of the upper linkage rod 322 are respectively rotatably connected to the two fixed plates 321, one end of the lower linkage rod 323 is rotatably connected to a fixed plate 321, and the other end of the lower linkage rod 323 is rotatably connected to the third motor 32 The output end of 7 is fixedly connected, the third motor 327 is fixedly mounted on another fixed plate 321, there are two gears 326, the two gears 326 are respectively fixedly mounted on the upper linkage rod 322 and the lower linkage rod 323, the two gears 326 are meshed with each other, and two scrapers 324 and scrapers 325 are each provided with two, the two scrapers 324 are respectively fixedly mounted on one side of the upper linkage rod 322 and the lower linkage rod 323, the scraper 324 is located on the left side of the middle part of the first screen 11 and the second screen 12, and the two scrapers 325 are respectively fixedly mounted on the right ends of the two scrapers 324.

[0046] The cleaning device 3 further includes an air jet assembly 33 , and the air jet assembly 33 is connected to the fixing plate 321 .

[0047] The jet assembly 33 includes an air pipe 331 and an air nozzle 332. The two ends of the air pipe 331 are fixedly connected to two fixing plates 321 respectively. There are multiple air nozzles 332, and the air nozzles 332 are evenly fixedly installed above and below the air pipe 331. The scraper 324 is provided with corresponding through holes. The first slider 313 and the fixing plate 321 fixedly connected to the first slider 313 are provided with pipes corresponding to the air pipe 331. The first slider 313 is provided with an air vent.

[0048] In the embodiment of the utility model, the second motor 312 drives the threaded rod 314 to rotate, the first slider 313 slides along the threaded rod 314 on the outer side wall of the vibration screening machine body 1, and the first slider 313 drives the fixed plate 321 to slide. When the fixed plate 321 drives the scraper 324 to be located between the first screen 11 and the second screen 12, the third motor 327 is started, and the third motor 327 drives a gear 326 to rotate, and the other gear 326 rotates synchronously in the opposite direction through meshing, so that the scraper 324 drives the scraper 325 to fit the first screen 11 and the second screen 12 respectively, and the second motor 312 continues to drive the first slider 313 to slide, and the scraper 325 scrapes off the tea leaves in the sieve holes of the first screen 11 and the second screen 12, and the air nozzle 332 sprays the air transported in the air pipe 331 to the sieve holes.

[0049] In the embodiment of the utility model, the scraper 325 slides against the first screen 11 and the second screen 12 so that the adhered tea leaves are scraped off and the tea leaves that are difficult to be removed are taken out by the air sprayed by the air nozzle 332 .

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage discharging screening machine, comprising a vibrating screening machine body (1), characterized in that: The vibrating screening machine body (1) is provided with a material dividing device (2) and a cleaning device (3); The cleaning device (3) comprises a guide assembly (31) and a scraping assembly (32); both the guide assembly (31) and the scraping assembly (32) are connected to the vibration screening machine body (1); the guide assembly (31) is connected to the scraping assembly (32).

2. The multi-stage discharging screening machine according to claim 1, characterized in that: The vibration screening machine body (1) is the main part of the inclined vibration screen, and the vibration screening machine body (1) comprises a first screen (11) and a second screen (12). The first screen (11) and the second screen (12) are located on the upper inner side of the vibration screening machine body (1), the first screen (11) is located above the second screen (12), and the screen holes on the first screen (11) are larger than the screen holes on the second screen (12).

3. The multi-stage discharging screening machine according to claim 2, characterized in that: The material distribution device (2) comprises a material distribution component (21) and a driving component (22), and the material distribution component (21) and the driving component (22) are connected to the vibration screening machine body (1).

4. The multi-stage discharging screening machine according to claim 3, characterized in that: The material dividing assembly (21) comprises a feed baffle (211), a material dividing top plate (212) and a material dividing baffle (213); the feed baffle (211) is fixedly connected to the left inner wall of the feed port of the vibration screening machine body (1); the material dividing top plate (212) is fixedly installed above the right side of the feed port of the vibration screening machine body (1); there are a plurality of material dividing baffles (213); the material dividing baffles (213) are fixedly installed below the material dividing top plate (212) in an inclined manner; and the gap formed at the left ends of the plurality of material dividing baffles (213) is smaller than the gap formed at the right ends.

5. The multi-stage discharging screening machine according to claim 4, characterized in that: The driving assembly (22) comprises a guide roller (221), a conveyor belt (222), a first motor bracket (223), a first motor (224), a pulley (225) and a belt (226). There are two guide rollers (221) and two pulleys (225), one guide roller (221) is located below the feed baffle (211), and the other guide roller (221) is located below the right end of the material distribution baffle (213) and located at the left end of the first screen (11). The guide roller (221) is rotatably connected to the inner side wall of the feed port of the vibration screening machine body (1), and the conveyor belt (222) is driven by the guide roller (221). The side walls of the two guide rollers (221) are connected, one end of the two guide rollers (221) is fixedly connected to two pulleys (225) respectively, the pulleys (225) are rotatably mounted on the front outer wall of the vibration screening machine body (1), the two pulleys (225) are connected by belts (226), the center of one pulley (225) is fixedly connected to the output end of the first motor (224), the first motor (224) is fixedly mounted on the first motor bracket (223), and the first motor bracket (223) is fixedly mounted on the front outer wall of the vibration screening machine body (1).

6. The multi-stage discharging screening machine according to claim 5, characterized in that: The guide assembly (31) comprises a left bracket (311), a second motor (312), a first slider (313), a threaded rod (314), a right bracket (315) and a second slider (316), wherein the left bracket (311) is fixedly mounted on the front outer side wall of the vibration screening machine body (1), the second motor (312) is fixedly mounted on the left side of the left bracket (311), one end of the threaded rod (314) is rotatably connected to the right side of the left bracket (311), the other end of the threaded rod (314) is rotatably connected to the right bracket (315), the first slider (313) is rotatably connected to the second motor (316), and the second slider (316) is rotatably connected to the left bracket (315). The threaded rod (314) is threadedly connected, the first slider (313) is slidably connected to the vibration screening machine body (1), the first slider (313) is connected to the scraping assembly (32), the right bracket (315) is fixedly installed on the front right outer wall of the vibration screening machine body (1), the second slider (316) is slidably connected to the rear outer wall of the vibration screening machine body (1), the second slider (316) is connected to the scraping assembly (32), and the front and rear end side walls of the vibration screening machine body (1) are provided with through grooves corresponding to the first slider (313) and the second slider (316).

7. The multi-stage discharging screening machine according to claim 6, characterized in that: The scraping assembly (32) comprises a fixed plate (321), an upper linkage rod (322), a lower linkage rod (323), a scraper (324), a scraper (325), a gear (326) and a third motor (327). There are two fixed plates (321), the two fixed plates (321) are respectively fixedly connected to the first slider (313) and the second slider (316), the fixed plates (321) are slidably connected to the vibration screening machine body (1), the two ends of the upper linkage rod (322) are respectively rotatably connected to the two fixed plates (321), one end of the lower linkage rod (323) is rotatably connected to one fixed plate (321), and the other end of the lower linkage rod (323) is rotatably connected to the third motor ( The output end of the first sieve (11) and the second sieve (12) is fixedly connected, the third motor (327) is fixedly mounted on another fixed plate (321), there are two gears (326), the two gears (326) are fixedly mounted on the upper linkage rod (322) and the lower linkage rod (323), the two gears (326) are meshed with each other, and there are two scrapers (324) and two scrapers (325), the two scrapers (324) are fixedly mounted on one side of the upper linkage rod (322) and the lower linkage rod (323), the scrapers (324) are located on the left side of the middle part of the first sieve (11) and the second sieve (12), and the two scrapers (325) are fixedly mounted on the right ends of the two scrapers (324).

8. The multi-stage discharging screening machine according to claim 7, characterized in that: The cleaning device (3) further comprises an air jet assembly (33), wherein the air jet assembly (33) is connected to the fixing plate (321).

9. The multi-stage discharging screening machine according to claim 8, characterized in that: The jet assembly (33) comprises an air delivery pipe (331) and an air jet nozzle (332). The two ends of the air delivery pipe (331) are respectively fixedly connected to two fixing plates (321). There are a plurality of air jet nozzles (332), which are evenly fixedly installed above and below the air delivery pipe (331). The scraper (324) is provided with corresponding through holes. A pipeline corresponding to the air delivery pipe (331) is provided inside the first slider (313) and the fixing plate (321) fixedly connected to the first slider (313). The first slider (313) is provided with an air vent.

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