Vertical airflow screening machine for chemical powder

Abstract

The utility model discloses a vertical airflow screening machine for chemical powder, and relates to the technical field of kitchen ware. The vertical airflow screening machine for the chemical powder comprises a shell, a feeding pipe, a screen, a fine powder opening, a coarse powder opening, a mixed powder opening, a conical hopper and a wind wheel, a mounting hole is formed in the side portion of the shell, and the fine powder opening is formed in the mounting hole. During use, two winding rollers can rotate oppositely through a first motor and a rotating rod, a first pull rope and a second pull rope can be wound and loosened through opposite rotation of the two winding rollers, at the moment, a connecting block can move under cooperation of a spring, and a moving plate can rotate through movement of the connecting block; and then the winding roller continues to rotate so that the moving plate can move, raw materials blocked in the feeding pipe are extruded, the feeding pipe is dredged, meanwhile, the moving plate moves to scrape the inner wall of the feeding pipe, and waste caused by the fact that rubber auxiliaries are left on the feeding pipe is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchenware, in particular to a vertical airflow screening machine for chemical powders. Background Art

[0002] Rubber additives refer to a general term for a series of fine chemical products added during the processing of natural rubber or synthetic rubber into rubber products to give rubber products performance, ensure the service life of rubber products, and improve the processing performance of rubber compounds. There are many types of rubber additives, such as vulcanizers, accelerators, activators, anti-reversion additives, rubber reinforcing additives, etc., and air flow powder screening machines are generally used to screen rubber additives during production.

[0003] The patent with publication number CN215278389U in the prior art discloses a dynamic and efficient vertical powder classifier for raw materials, which uses a shell, a wind wheel, a feed pipe, a conical bucket, a screen, a first motor, a first gear, a second transmission shaft, a second motor, a first rack, a retaining frame, a third limit ring, a second gear, a second rack and a groove to grade the raw materials, and at the same time rotate the screen so that the materials fall into different positions of the screen and are evenly spread on the surface of the screen to increase the contact area between the raw materials and the airflow and avoid material accumulation. However, when in use, the materials are put into the feed pipe and then slide down by their own gravity. At this time, the materials are easily accumulated in the feed pipe and blocked, which requires workers to use external tools to clear the blockage through experience, which increases the labor intensity of the staff and is easy to damage the feed pipe due to careless operating errors. At the same time, the screen is rotated so that there is a gap with the inner wall of the shell. When in use, powder materials are easy to enter the gap and affect subsequent use. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a vertical air flow screening machine for chemical powders to solve the problem that materials are difficult to clear when the feed is piled up and blocked, and the rotating setting of the screen will leave a gap with the inner wall of the shell. When in use, powder materials can easily enter the gap and affect subsequent use.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical scheme: a vertical airflow screening machine for chemical powders, comprising a shell, a feed pipe, a screen, a fine powder port, a coarse powder port, a mixed powder port, a conical bucket and a wind wheel, a mounting hole is opened on the side of the shell, the fine powder port is mounted on the mounting hole, a feed hopper is installed on the side of the feed pipe, and a blocking and extrusion mechanism is provided on the feed hopper;

[0006] The blocking and extruding mechanism includes a movable groove opened on the inner wall at the top of the feed pipe, two fixed rods are installed on the opposite inner walls of the movable groove, convex blocks are slidably sleeved on the two fixed rods, movable holes are opened on the sides of the convex blocks, and a movable rod is rotatably installed on the movable hole, and movable blocks are installed at both ends of the movable rod away from each other, and a movable plate is jointly installed at the bottom of the two movable blocks, and a driving component for moving the convex block and rotating the movable rod is provided on the feed pipe.

[0007] The transmission mechanism that the cam is connected with the first transmission mechanism is that the cam is connected with the first gear and the second gear is connected with the gear to turn the cam, and the cam is connected with the gear to turn the cam.

[0008] Preferably, the first transmission comprises a rack installed at the bottom of the connecting block, the movable rod is sleeved with a first circular gear, and the rack box and the first circular gear are meshed.

[0009] Preferably, the second transmission unit comprises a fixed cavity opened on one of the fixed blocks, one end of the two rotating rods extends into the fixed cavity and is respectively installed with a second circular gear, and the two second circular gears are meshed with each other.

[0010] Preferably, the elastic unit comprises a spring mounted on the side of the convex block, and the other end of the spring is mounted on the inner wall of the side of the movable groove.

[0011] Preferably, the bottom inner wall of the feed hopper is inclined, and sealing gaskets are fixedly provided on the four outer walls of the movable plate.

[0012] Preferably, the screen is fixed on the side inner wall of the shell, a horizontal block is installed on the side inner wall of the shell, the shell and the feed pipe are staggered, a through rod is rotatably installed on the bottom of the horizontal block, a scraper is installed on the bottom of the through rod, a transmission cavity is opened on the horizontal block, the top end of the through rod extends into the transmission cavity and is installed with a first bevel gear, a second motor is installed on the side of the shell, transmission holes are opened on the side of the shell and the side of the horizontal block, a transmission rod is rotatably installed on the two transmission holes, one end of the transmission rod is installed on the output shaft of the second motor, and the other end of the transmission rod is installed with a second bevel gear, and the first bevel gear and the second bevel gear are meshed with each other.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model can make the two winding rollers rotate in opposite directions through the first motor and the rotating rod. The opposite rotation of the two winding rollers will cause the first pull rope and the second pull rope to be respectively wound and relaxed. At this time, the connecting block will move with the cooperation of the spring. The movement of the connecting block will cause the movable rod to rotate through the rack and the first circular gear. The rotation of the movable rod will cause the movable plate to rotate. Then the winding rollers continue to rotate to cause the movable plate to move, thereby squeezing the raw materials blocked in the feed pipe, thereby unblocking the feed pipe. At the same time, the movement of the movable plate will scrape the inner wall of the feed pipe to avoid the rubber additive remaining on the feed pipe and causing waste.

[0015] The utility model fixes the screen to avoid the situation where there is a gap between the rotating screen and the inner wall of the shell, which may easily cause powder to enter the gap and affect subsequent use. At the same time, when in use, the scraper can be rotated by the second motor and the through rod, thereby scraping the rubber additive above the bottom of the scraper to other places, thereby avoiding its accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first perspective;

[0017] Figure 2 yes Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the partially cut-away shell and the feed pipe of the utility model;

[0019] Figure 4 yes Figure 3 The enlarged structural diagram at B in the middle;

[0020] Figure 5 It is a partially cutaway and enlarged three-dimensional structural schematic diagram of the convex block of the utility model;

[0021] Figure 6 It is a schematic diagram of a partially cutaway three-dimensional structure of a fixing block of the utility model;

[0022] Figure 7 It is a side structural schematic diagram of a partially cut-away and enlarged horizontal block of the utility model.

[0023] Figure numerals: 1. outer shell; 2. feed pipe; 3. feed hopper; 4. convex block; 5. movable rod; 6. movable block; 7. movable plate; 8. rack; 9. first circular gear; 10. first pull rope; 11. second pull rope; 12. fixed block; 13. rotating rod; 14. first motor; 15. winding roller; 16. horizontal block; 17. through rod; 18. scraper; 19. first bevel gear; 20. second motor; 21. transmission rod; 22. second bevel gear; 23. screen; 24. fine powder outlet; 25. second circular gear; 26. spring. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0025] Figures 1 to 7 It is the best embodiment of the utility model, and the following Figures 1 to 7 The utility model is further described.

[0026] A chemical powder vertical air flow screening machine comprises a shell 1, a feed pipe 2, a screen 23, a fine powder port 24, a coarse powder port, a mixed powder port, a conical bucket and a wind wheel. It should be noted that, in this embodiment, the installation method of the shell 1, the feed pipe 2, the coarse powder port, the mixed powder port and the wind wheel can refer to the technical content adopted in a raw material dynamic and efficient vertical powder selection machine disclosed in the Chinese patent with publication number CN215278389U in the prior art, which will not be repeated here. A mounting hole is opened on the side of the shell 1, and the fine powder port 24 is installed on the mounting hole. A feed hopper 3 is installed on the side of the feed pipe 2, and a blocking and extrusion mechanism is provided on the feed hopper 3;

[0027] The blocking and extrusion mechanism includes a movable groove opened on the inner wall at the top of the feed pipe 2, and two fixed rods are installed on the opposite inner walls of the movable groove. A convex block 4 is slidably sleeved on the two fixed rods, and a movable hole is opened on the side of the convex block 4. A movable rod 5 is rotatably installed on the movable hole. Movable blocks 6 are installed at both ends of the movable rod 5 away from each other, and a movable plate 7 is jointly installed at the bottom of the two movable blocks 6. A driving component for moving the convex block 4 and rotating the movable rod 5 is provided on the feed pipe 2.

[0028] By means of the above structure, the movable plate 7 can be rotated through the movable rod 5, the movable block 6 and the driving assembly to avoid obstruction to the feed, and then the movable plate 7 can be moved along the feed pipe 2 to squeeze the raw materials blocked in the feed pipe 2, thereby clearing the blockage of the feed pipe 2, and at the same time, the inner wall of the feed pipe 2 can be scraped to avoid the rubber additive remaining on the feed pipe 2 and causing waste.

[0029] The driving assembly includes an active cavity opened on the convex block 4, a sliding rod is installed on the relative inner wall of the active cavity, a sliding block is slidably sleeved on the sliding rod, a connecting block is installed at the bottom of the sliding block, a first transmission unit for rotating the active rod 5 is arranged on the connecting block, a first pull rope 10 and a second pull rope 11 are respectively installed on the two sides of the connecting block away from each other, two fixed blocks 12 are installed on the top of the feeding pipe 2, two rotating rods 13 are rotatably installed on the relative inner walls of the two fixed blocks 12, a first motor 14 is installed on the side of one of the fixed blocks 12, one end of one of the rotating rods 13 is installed on the output shaft of the first motor 14, the two rotating rods 13 are installed through the second transmission unit, and winding rollers 15 are sleeved on the two rotating rods 13, two rope holes are opened on the top of the feeding pipe 2, and through holes are opened on the relatively distant sides of the convex block 4, the first pull rope 10 and the second pull rope 11 respectively pass through the through hole and the rope hole on one side in sequence and are respectively installed on the two winding rollers 15, and an elastic unit is arranged on the side of the convex block 4.

[0030] In this solution, the convex block 4 is easily moved by arranging the sliding rod, the sliding block, the connecting block, the first pull rope 10, the second pull rope 11, the fixing block 12, the rotating rod 13, the first motor 14 and the winding roller 15.

[0031] Specifically, the output of the first motor 14 will cause the two winding rollers 15 to rotate in opposite directions through the rotating rod 13. At this time, the first pull rope 10 and the second pull rope 11 will be wound and relaxed respectively, thereby moving the connecting block, thereby causing the connecting block to move and squeeze the convex block 4 to move.

[0032] The first transmission comprises a rack 8 mounted on the bottom of the connecting block, a first circular gear 9 is sleeved on the movable rod 5, and the rack 8 and the first circular gear 9 are meshed.

[0033] In this solution, the rack 8 and the first circular gear 9 are arranged to facilitate the rotation of the movable rod 5 .

[0034] Specifically, the movement of the connecting block will cause the rack 8 to move, and the movement of the rack 8 will cause the first circular gear 9 to rotate, and the rotation of the first circular gear 9 will cause the movable plate 7 to rotate through the movable rod 5 and the movable block 6.

[0035] The second transmission unit includes a fixed cavity formed on one of the fixed blocks 12 . One ends of the two rotating rods 13 extend into the fixed cavity and are respectively provided with second circular gears 25 . The two second circular gears 25 are meshed with each other.

[0036] In this solution, the second circular gear 25 is provided to facilitate the two rotating rods 13 to rotate simultaneously.

[0037] Specifically, the rotation of one of the rotating rods 13 will cause the other rotating rod 13 to rotate in the opposite direction through the two second circular gears 25 .

[0038] The elastic unit comprises a spring 26 mounted on the side of the convex block 4, and the other end of the spring 26 is mounted on the inner wall of the side of the moving groove.

[0039] In this solution, the convex block 4 can be easily reset by providing the spring 26 .

[0040] Specifically, the convex block 4 can be pulled by the spring 26 to reset it after use, and at the same time, the movable plate 7 can be rotated first and then moved.

[0041] The inner wall of the bottom of the feed hopper 3 is inclined, and sealing pads are fixedly arranged on the four outer walls of the movable plate 7 .

[0042] In this solution, the bottom inner wall of the feed hopper 3 is inclined to facilitate the falling of materials, and the distance between the moving plate 7 and the feed pipe 2 is reduced by the setting of the sealing gasket.

[0043] The screen 23 is fixed on the side inner wall of the shell 1, and the side inner wall of the shell 1 is installed with a horizontal block 16. The shell 1 and the feed pipe 2 are staggered. A through rod 17 is rotatably installed at the bottom of the horizontal block 16, and a scraper 18 is installed at the bottom of the through rod 17. A transmission cavity is opened on the horizontal block 16, and the top of the through rod 17 extends into the transmission cavity and is installed with a first bevel gear 19. A second motor 20 is installed on the side of the shell 1, and transmission holes are opened on the side of the shell 1 and the side of the horizontal block 16. A transmission rod 21 is rotatably installed on the two transmission holes. One end of the transmission rod 21 is installed on the output shaft of the second motor 20, and the other end of the transmission rod 21 is installed with a second bevel gear 22. The first bevel gear 19 and the second bevel gear 22 are meshed.

[0044] In this solution, the arrangement of the horizontal block 16, the through rod 17, the scraper 18, the first bevel gear 19, the second motor 20, the transmission rod 21 and the second bevel gear 22 facilitates scraping of the accumulated materials.

[0045] Specifically, the output of the second motor 20 will cause the through rod 17 to rotate, and the rotation of the through rod 17 will cause the scraper 18 to rotate. At this time, the scraper 18 will scrape the rubber additive above its bottom to avoid its accumulation, and avoid the rotation setting of the screen 23 and the inner wall of the shell 1 to prevent the existence of a gap, which may easily cause powder to enter the gap and affect subsequent use.

[0046] In summary: when the utility model is in use, the rubber additive is first placed on the feed hopper 3. Since the movable plate 7 blocks the spring 26, the rubber additive will slide along the bottom of the feed hopper 3 and fall onto the screen 23 through the feed pipe 2. When the feed pipe 2 is blocked due to excessive feeding, the first motor 14 is started. The output of the first motor 14 will cause one of the rotating rods 13 to rotate. The rotation of one of the rotating rods 13 will cause one of the second circular gears 25 to rotate. The rotation of one of the second circular gears 25 will cause the other second circular gear 25 to rotate in the opposite direction. The opposite rotation of the other second circular gear 25 will cause the other rotating rod 13 to rotate in the opposite direction. The opposite rotation of the two rotating rods 13 will cause the two winding rollers 15 to rotate in the opposite direction. The rotation of one of the winding rollers 15 will rewind the first pull rope 10. At this time, the opposite rotation of the other winding roller 15 will relax the second pull rope 11. At this time, since the spring 26 pulls the convex block 4, the first pull rope 10 is reeled in and the second pull rope 11 is reeled in. When the second pull rope 11 is loosened, the connecting block will move under the action of the slide rod and the slider, and the movement of the connecting block will move the rack 8, and the movement of the rack 8 will cause the first circular gear 9 to rotate, and the rotation of the first circular gear 9 will cause the movable rod 5 to rotate, and the rotation of the movable rod 5 will cause the movable block 6 to rotate, and the rotation of the movable block 6 will cause the movable plate 7 to rotate. When the connecting block contacts the inner wall of the side of the movable cavity, the bottom of the movable plate 7 contacts the bottom of the feeding pipe 2. At this time, the first pull rope 10 continues to be wound up and the second pull rope 11 continues to be loosened, which will cause the convex block 4 to move. The movement of the convex block 4 will cause the movable block 6 to move through the movable rod 5, and the movement of the movable block 6 will cause the movable plate 7 to move, thereby squeezing the raw materials blocked in the feeding pipe 2, thereby clearing the blockage of the feeding pipe 2. At the same time, the movement of the movable plate 7 will scrape the inner wall of the feeding pipe 2, causing the rubber additive remaining on the feeding pipe 2 to fall, thereby avoiding the rubber additive remaining on the feeding pipe 2 and causing waste.

[0047] When there is no blockage, the first motor 14 outputs in the reverse direction, which will cause the first pull rope 10 to relax and the second pull rope 11 to reel in. At this time, the convex block 4 will be reset under the action of the spring 26, and the connecting block will contact the inner wall on the other side, thereby causing the movable plate 7 to reset and rotate, and then the movable plate 7 will be reset with the cooperation of the second pull rope 11, so as to facilitate the next use.

[0048] When the rubber additive is being fed, the second motor 20 is started, and the output of the second motor 20 causes the transmission rod 21 to rotate, and the rotation of the transmission rod 21 causes the second bevel gear 22 to rotate, and the rotation of the second bevel gear 22 causes the first bevel gear 19 to rotate, and the rotation of the first bevel gear 19 causes the scraper 18 to rotate through the through rod 17. At this time, the scraper 18 will scrape the rubber additive above its bottom to avoid its accumulation, and avoid the situation where there is a gap between the rotating setting of the screen 23 and the inner wall of the shell 1, which may easily cause powder to enter the gap and affect subsequent use.

[0049] When the loading is completed, the wind wheel is started, and negative pressure is generated inside the upper end of the shell 1. Air enters the air inlet pipe, and the air flow passes through the screen 23 and enters the upper end of the shell 1, so that materials of different sizes are discharged from different outlets, thereby classifying and screening the rubber additives.

[0050] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A chemical powder vertical air flow screening machine, comprising a housing (1), a feed pipe (2), a screen (23), a fine powder port (24), a coarse powder port, a mixed powder port, a conical bucket and a wind wheel, characterized in that: A mounting hole is provided on the side of the housing (1), the fine powder port (24) is mounted on the mounting hole, a feed hopper (3) is mounted on the side of the feed pipe (2), and a blocking and squeezing mechanism is provided on the feed hopper (3); The blocking and squeezing mechanism comprises a movable groove formed on the inner wall at the top of the feed pipe (2), two fixed rods are installed on the inner walls opposite to each other, convex blocks (4) are slidably sleeved on the two fixed rods, movable holes are formed on the sides of the convex blocks (4), a movable rod (5) is rotatably installed on the movable holes, movable blocks (6) are installed at both ends of the movable rod (5) away from each other, a movable plate (7) is installed at the bottom of the two movable blocks (6), and a driving component for moving the convex blocks (4) and rotating the movable rod (5) is provided on the feed pipe (2).

2. A chemical powder vertical airflow screening machine according to claim 1, characterized in that: The driving assembly comprises an active cavity opened on the convex block (4), a sliding rod is installed on the opposite inner wall of the active cavity, a sliding block is slidably sleeved on the sliding rod, a connecting block is installed at the bottom of the sliding block, a first transmission unit for rotating the active rod (5) is arranged on the connecting block, a first pull rope (10) and a second pull rope (11) are respectively installed on two sides of the connecting block away from each other, two fixed blocks (12) are installed on the top of the feeding pipe (2), two rotating rods (13) are rotatably installed on the opposite inner walls of the two fixed blocks (12), and a first rotating rod (13) is installed on the side of one of the fixed blocks (12). The motor (14) comprises a first motor (14), wherein one end of one of the rotating rods (13) is mounted on the output shaft of the first motor (14), the two rotating rods (13) are mounted in cooperation with each other through a second transmission unit, and the two rotating rods (13) are sleeved with a winding roller (15), the top of the feed pipe (2) is provided with two rope holes, and the relatively distant sides of the convex block (4) are provided with through holes, the first pull rope (10) and the second pull rope (11) respectively pass through the through holes and the rope holes on one side in sequence and are respectively mounted on the two winding rollers (15), and the side of the convex block (4) is provided with an elastic unit.

3. A chemical powder vertical airflow screening machine according to claim 2, characterized in that: The first transmission comprises a rack (8) mounted on the bottom of the connecting block, a first circular gear (9) is sleeved on the movable rod (5), and the rack (8) and the first circular gear (9) are meshed.

4. A chemical powder vertical airflow screening machine according to claim 2, characterized in that: The second transmission unit comprises a fixed cavity formed on one of the fixed blocks (12), one end of each of the two rotating rods (13) extending into the fixed cavity and respectively provided with a second circular gear (25), the two second circular gears (25) being meshed with each other.

5. A chemical powder vertical airflow screening machine according to claim 2, characterized in that: The elastic unit comprises a spring (26) mounted on the side of the convex block (4), and the other end of the spring (26) is mounted on the inner wall of the side of the movable groove.

6. A chemical powder vertical airflow screening machine according to claim 1, characterized in that: The inner wall of the bottom of the feed hopper (3) is inclined, and sealing gaskets are fixedly provided on the outer walls of the four sides of the movable plate (7).

7. A chemical powder vertical airflow screening machine according to claim 1, characterized in that: The screen (23) is fixedly mounted on the inner wall of the side of the housing (1). The inner wall of the side of the housing (1) is mounted with a horizontal block (16). The housing (1) and the feed pipe (2) are staggered. A through rod (17) is rotatably mounted on the bottom of the horizontal block (16). A scraper (18) is mounted on the bottom of the through rod (17). A transmission cavity is provided on the horizontal block (16). The top end of the through rod (17) extends into the transmission cavity and is mounted with a first bevel gear (19). A second motor (20) is mounted on the side of the housing (1). Transmission holes are provided on the side of the housing (1) and the side of the horizontal block (16). A transmission rod (21) is rotatably mounted on the two transmission holes. One end of the transmission rod (21) is mounted on the output shaft of the second motor (20). The other end of the transmission rod (21) is mounted with a second bevel gear (22). The first bevel gear (19) and the second bevel gear (22) are meshed with each other.

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