A device for purifying and recovering dust in the exhaust gas of a jet mill

Abstract

The utility model discloses a device for purifying and recovering dust in exhaust gas from an air flow mill, and relates to the technical field of air flow mills. The device for purifying and recovering dust in exhaust gas from an air flow mill comprises an air flow mill pulverizing tank, a feed pipe is fixedly installed on the left vertical middle position of the outer surface of the air flow mill pulverizing tank by being obliquely plugged, the interior of the feed pipe is communicated with the interior of the air flow mill pulverizing tank, and a feeding bin is fixedly installed on the end of the feed pipe away from the air flow mill pulverizing tank, a filter disc is arranged inside a second connecting pipe, when a fan draws gas from the interior of the collection bin, if the filter screen is damaged, dust will be contained in the drawn gas, and the dust will be intercepted by the filter disc and fall into the interior of a collection tank through a third connecting pipe, the accumulated amount of dust in the collection tank can be observed through a transparent scale plate, and whether the filter screen of the air flow mill needs to be replaced can be judged by regularly monitoring the amount of dust in the collection tank, thereby improving the practicality of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of air flow mills, in particular to a device for purifying and recovering dust in exhaust gas from air flow mills. Background Art

[0002] Jet mill is a kind of crushing equipment which uses high-speed airflow generated by compressed air to impact materials and achieve self-grinding of materials. During the crushing process, the particles in the grinding chamber are continuously impacted and collided with the inner wall of the grinding chamber by the high-speed airflow. It has been widely used in food processing, medicine, mining, lithium battery and other industries.

[0003] Currently, in the crushing equipment for processing positive electrode materials such as lithium batteries and sodium batteries, the air flow mill uses a nozzle to eject high-speed airflow to cause material particles to collide with each other to achieve the crushing purpose, and uses a fan as a power source to discharge the system gas out of the body, and the material is intercepted by a filter. However, the filter in the existing device may be damaged after long-term use due to continuous impact of the material, and the damage is usually small and difficult to detect, resulting in harmful dust escaping into the atmosphere and causing material loss, so it is less practical. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a device for purifying and recovering dust in the exhaust gas of an air flow mill, which can solve the problem that the filter screen in the existing device may be damaged after long-term use due to continuous impact of materials, and the damage is usually very small and difficult to detect, resulting in harmful dust escaping into the atmosphere and causing material loss, and the practicality is low.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for purifying and recycling dust in the exhaust gas of a jet mill, comprising a jet mill crushing tank, a feed pipe is fixedly installed at a vertical middle position on the left side of the outer surface of the jet mill crushing tank, the interior of the feed pipe is connected to the interior of the jet mill crushing tank, and a feeding bin is fixedly installed at one end of the feed pipe away from the jet mill crushing tank;

[0008] The bottom of the jet mill pulverizing tank is provided with an air jet device;

[0009] Among them, a classifying wheel is rotatably installed on the inner wall of the jet mill pulverizing tank corresponding to the upper position of the feed pipe;

[0010] Among them, a first connecting pipe is plugged and fixedly installed on the right side of the outer surface of the air flow mill pulverizing tank corresponding to the upper position of the grading wheel, the first connecting pipe is connected to the interior of the air flow mill pulverizing tank, and a collecting device is arranged at one end of the first connecting pipe away from the air flow mill pulverizing tank, a second connecting pipe is arranged on the collecting device, and a detection device is arranged on the second connecting pipe.

[0011] Preferably, the jetting device comprises a nozzle, which is fixedly mounted on the inner bottom end of the jet mill pulverizing tank;

[0012] Among them, an air intake pipe is plugged and fixedly installed at the position of the nozzle corresponding to the left bottom end of the outer surface of the air flow mill pulverizing tank. The air intake pipe runs through the interior of the air flow mill pulverizing tank and is fixedly connected to the nozzle.

[0013] Preferably, the collecting device comprises a collecting bin, the collecting bin is fixedly connected to an end of the first connecting pipe away from the airflow mill pulverizing tank, and the first connecting pipe is in communication with the interior of the collecting bin;

[0014] Among them, a collecting funnel is fixedly installed at the bottom end of the collecting bin, a conveying pipe is fixedly installed at the bottom end of the collecting funnel, and the collecting funnel is communicated with the interior of the collecting bin.

[0015] Preferably, a filter screen is fixedly installed on the inner top of the collection bin;

[0016] Among them, a second connecting pipe is plugged and fixedly installed on the right side of the outer surface of the collecting bin corresponding to the position above the filter screen, the second connecting pipe is connected to the interior of the collecting bin, and a fan sleeve is fixedly installed on the end of the second connecting pipe away from the collecting bin, and a fan is fixedly installed inside the fan sleeve.

[0017] Preferably, the detection device comprises a third connecting tube, which is plugged and fixedly installed on the bottom side of the outer surface of the second connecting tube, and rectangular plates are fixedly installed on both left and right sides of the bottom end of the outer surface of the third connecting tube;

[0018] Wherein, a filter disc is fixedly installed on the inner wall of the second connecting pipe corresponding to the right side of the third connecting pipe;

[0019] Among them, a monitoring box is arranged at the bottom end of the third connecting tube, and a T-shaped groove is opened on the rear surface of the monitoring box at the position corresponding to the two rectangular plates. The left and right sides of the inside of the T-shaped groove are slidingly connected with the two rectangular plates respectively, and a collecting groove is opened at the inner bottom end of the T-shaped groove at the position corresponding to the third connecting tube.

[0020] Preferably, a rectangular hole is provided on the front surface of the monitoring box at a position corresponding to the collecting slot, and a transparent scale plate is fixedly installed inside the rectangular hole.

[0021] Preferably, circular holes are provided on the left and right sides of the upper surface of the monitoring box at positions corresponding to the two rectangular plates, and fixed plates are inserted and fixedly installed at the upper and lower ends of the two circular holes;

[0022] A clamping rod is inserted and slidably installed at the center of the lower fixed plate, the bottom end of the clamping rod is inclined and extends to the inside of the T-shaped groove, a moving rod is fixedly installed at the top of the clamping rod, the top of the moving rod slides through the upper surface of the upper fixed plate, and a ball handle is fixedly installed at the top of the moving rod;

[0023] Wherein, a spring is fixedly installed on the top end of the clamping rod, the spring is sleeved on the outside of the moving rod and the top end of the spring is fixedly installed on the lower surface of the upper fixed plate.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] (1) The device for purifying and recovering dust in the exhaust gas of the air flow mill is provided with a filter disc inside the second connecting pipe. When the fan draws the gas from the inside of the collecting bin, if the filter is damaged, the drawn gas will contain dust. The dust will be intercepted by the filter disc and fall into the collecting tank through the third connecting pipe. The accumulated amount of dust in the collecting tank can be observed through the transparent scale plate. By regularly monitoring the amount of dust in the collecting tank, it can be judged whether the filter of the air flow mill needs to be replaced, thereby improving the practicality of the device.

[0027] (2) The device for purifying and recovering dust in the exhaust gas of the air flow mill prevents harmful dust from being discharged into the atmosphere and polluting the environment through the interception effect of the filter disc, while reducing material losses and improving the environmental protection and practicality of the device.

[0028] (3) The device for purifying dust in the exhaust gas of the gas flow mill and recovering it has two springs to drive two clamping rods to clamp the monitoring box. The operation is simple and the clamping is firm, which facilitates the installation and disassembly of the monitoring box and improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0030] Figure 1 This is a schematic diagram of the structure of a device for purifying and recovering dust in the exhaust gas of a jet mill according to the utility model;

[0031] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0032] Figure 3 It is a partial cross-sectional schematic diagram of the utility model;

[0033] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0034] Figure 5 This is a schematic diagram of the internal structure of the second connecting pipe of the utility model.

[0035] Figure numerals: 1. air flow mill crushing tank; 2. feed pipe; 3. feed bin; 4. grading wheel; 5. first connecting pipe; 6. second connecting pipe; 7. nozzle; 8. air inlet pipe; 9. collecting bin; 10. collecting funnel; 11. conveying pipe; 12. filter screen; 13. third connecting pipe; 14. rectangular plate; 15. monitoring box; 16. T-slot; 17. collecting trough; 18. rectangular hole; 19. transparent scale plate; 20. fan; 21. round hole; 22. fixed plate; 23. clamping rod; 24. moving rod; 25. ball handle; 26. spring; 27. fan sleeve; 28. filter plate. DETAILED DESCRIPTION

[0036] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0037] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] See also Figure 1-5The utility model provides a technical solution: a device for purifying and recycling dust in the exhaust gas of a jet mill, comprising a jet mill crushing tank 1, a feed pipe 2 is fixedly installed at a vertical middle position on the left side of the outer surface of the jet mill crushing tank 1, the inside of the feed pipe 2 is connected to the inside of the jet mill crushing tank 1, and a feeding bin 3 is fixedly installed at one end of the feed pipe 2 away from the jet mill crushing tank 1;

[0041] The bottom of the jet mill pulverizing tank 1 is provided with an air jet device;

[0042] Among them, a classifying wheel 4 is rotatably installed on the inner wall of the jet mill pulverizing tank 1 corresponding to the upper position of the feed pipe 2;

[0043] Among them, a first connecting pipe 5 is plugged and fixedly installed on the upper position of the classifying wheel 4 corresponding to the right side of the outer surface of the airflow mill pulverizing tank 1, the first connecting pipe 5 is connected to the inside of the airflow mill pulverizing tank 1, and a collecting device is arranged at the end of the first connecting pipe 5 away from the airflow mill pulverizing tank 1, and a second connecting pipe 6 is arranged on the collecting device, and a detection device is arranged on the second connecting pipe 6. When using this device, the material to be powdered enters the airflow mill pulverizing tank 1 from the feeding bin 3, and compressed air is transported to the inside of the nozzle 7 through the air inlet pipe 8, and the high-speed airflow is sprayed by the nozzle 7 to make the particles collide with each other, and the crushed small particles are separated from the large particles through the classifying wheel 4, and the small particles that meet the requirements are blown to the inside of the collecting bin 9 through the first connecting pipe 5, and the gas is extracted by the fan 20, and the material is intercepted by the filter 12 and placed below, and is transported to the next process through the collecting funnel 10 and the conveying pipe 11.

[0044] Furthermore, the jetting device includes a nozzle 7, which is fixedly mounted on the inner bottom end of the jet mill pulverizing tank 1;

[0045] Among them, an air intake pipe 8 is inserted and fixedly installed at the position of the nozzle 7 at the left bottom end of the outer surface of the air flow mill pulverizing tank 1. The air intake pipe 8 runs through the interior of the air flow mill pulverizing tank 1 and is fixedly connected to the nozzle 7.

[0046] Furthermore, the collecting device includes a collecting bin 9, which is fixedly connected to an end of the first connecting pipe 5 away from the airflow mill pulverizing tank 1, and the first connecting pipe 5 is in communication with the interior of the collecting bin 9;

[0047] Among them, a collecting funnel 10 is fixedly installed at the bottom end of the collecting bin 9, a conveying pipe 11 is fixedly installed at the bottom end of the collecting funnel 10, and the collecting funnel 10 is communicated with the interior of the collecting bin 9.

[0048] Furthermore, a filter screen 12 is fixedly installed on the top of the inner part of the collection bin 9;

[0049] Among them, a second connecting pipe 6 is plugged and fixedly installed on the right side of the outer surface of the collecting bin 9 corresponding to the position above the filter 12. The second connecting pipe 6 is connected to the interior of the collecting bin 9. A fan sleeve 27 is fixedly installed on the end of the second connecting pipe 6 away from the collecting bin 9, and a fan 20 is fixedly installed inside the fan sleeve 27.

[0050] Furthermore, the detection device includes a third connecting tube 13, which is plugged and fixedly installed on the bottom side of the outer surface of the second connecting tube 6, and rectangular plates 14 are fixedly installed on both left and right sides of the bottom end of the outer surface of the third connecting tube 13;

[0051] Among them, a filter disc 28 is fixedly installed on the inner wall of the second connecting pipe 6 corresponding to the right side of the third connecting pipe 13;

[0052] Among them, a monitoring box 15 is provided at the bottom end of the third connecting tube 13, and a T-shaped groove 16 is opened on the rear surface of the monitoring box 15 at the position corresponding to the two rectangular plates 14, the left and right sides of the inside of the T-shaped groove 16 are respectively slidably connected with the two rectangular plates 14, and a collection groove 17 is opened at the bottom end of the inner part of the T-shaped groove 16 corresponding to the position of the third connecting tube 13.

[0053] Furthermore, a rectangular hole 18 is provided on the front surface of the monitoring box 15 at a position corresponding to the collecting tank 17, and a transparent scale plate 19 is fixedly installed inside the rectangular hole 18.

[0054] Furthermore, circular holes 21 are provided on the upper surface of the monitoring box 15 at positions corresponding to the two rectangular plates 14 on both sides, and fixed plates 22 are inserted and fixedly installed at both upper and lower ends of the two circular holes 21;

[0055] A clamping rod 23 is inserted and slidably installed at the center of the lower fixed plate 22. The bottom end of the clamping rod 23 is inclined and extends to the inside of the T-shaped groove 16. A moving rod 24 is fixedly installed at the top of the clamping rod 23. The top of the moving rod 24 slides through the upper surface of the upper fixed plate 22, and a ball handle 25 is fixedly installed at the top of the moving rod 24.

[0056] Among them, a spring 26 is fixedly installed on the top of the clamping rod 23, and the spring 26 is sleeved on the outside of the moving rod 24 and the top of the spring 26 is fixedly installed on the lower surface of the upper fixed disk 22. By arranging a filter disk 28 inside the second connecting pipe 6, when the fan draws gas from the inside of the collecting bin 9, if the filter screen 12 is damaged, the drawn gas will contain dust, which will be intercepted by the filter disk 28 and fall into the collecting tank 17 through the third connecting pipe 13. The accumulated amount of dust in the collecting tank 17 can be observed through the transparent scale plate 19. By regularly monitoring the amount of dust in the collecting tank 17, it can be determined whether the filter screen of the air flow mill needs to be replaced, and the interception effect of the filter disk 28 can prevent harmful dust from being discharged into the atmosphere to pollute the environment. When installing the monitoring box 15, align the T-slot 16 on the monitoring box 15 with the two The two rectangular plates 14 are inserted into the inside of the T-slot 16, thereby pushing the two clamping rods 23 to move upward into the inside of the circular hole 21, and at the same time causing the two springs 26 to contract. When the two rectangular plates 14 slide to the inner bottom end of the T-slot 16, the two springs 26 extend to push the two clamping rods 23 to the original position to limit the two rectangular plates 14 inside the T-slot 16, thereby completing the installation of the monitoring box 15. When the monitoring box 15 needs to be removed, the two ball handles 25 are pulled upward, and then the two clamping rods 23 are driven by the two moving rods 24 to move upward to the inside of the circular hole 21, so that the two clamping rods 23 no longer limit the two rectangular plates 14, and the monitoring box 15 can be slid out from the two rectangular plates 14. The operation is simple and the clamping is firm, which is convenient for installing and disassembling the monitoring box 15.

[0057] Working principle: When using this device, the material to be powdered enters the inside of the airflow mill crushing tank 1 from the feeding bin 3, and the compressed air is transported to the inside of the nozzle 7 through the air inlet pipe 8, and the high-speed airflow is ejected by the nozzle 7 to make the particles collide with each other. The crushed small particles are separated from the large particles by the grading wheel 4, and the small particles that meet the requirements are blown to the inside of the collecting bin 9 through the first connecting pipe 5, and the gas is extracted by the fan 20. The material is intercepted by the filter screen 12 and placed below, and is transported to the next process through the collecting funnel 10 and the conveying pipe 11. By arranging a filter disc 28 inside the second connecting pipe 6, when the fan extracts the gas from the inside of the collecting bin 9, if the filter screen 12 is damaged, the extracted gas will contain dust, which will be intercepted by the filter disc 28 and fall into the collecting tank 17 through the third connecting pipe 13. The accumulated amount of dust in the collecting tank 17 can be observed through the transparent scale plate 19. By regularly monitoring the amount of dust in the collecting tank 17, it can be judged whether the filter screen of the airflow mill needs to be replaced, and through the filter The intercepting effect of the disk 28 prevents harmful dust from being discharged into the atmosphere and polluting the environment. When installing the monitoring box 15, the T-slot 16 on the monitoring box 15 is aligned with the two rectangular plates 14, so that the two rectangular plates 14 are inserted into the inside of the T-slot 16, thereby pushing the two clamping rods 23 to move upward into the inside of the circular hole 21, and at the same time causing the two springs 26 to contract. When the two rectangular plates 14 slide to the inner bottom end of the T-slot 16, the two springs 26 extend to push the two clamping rods 23 to the original position to limit the two rectangular plates 14 inside the T-slot 16, thereby completing the installation of the monitoring box 15. When the monitoring box 15 needs to be removed, the two ball handles 25 are pulled upward, and then the two clamping rods 23 are driven by the two moving rods 24 to move upward to the inside of the circular hole 21, so that the two clamping rods 23 no longer limit the two rectangular plates 14, and the monitoring box 15 can be slid out of the two rectangular plates 14. The operation is simple and the clamping is firm, which is convenient for installing and disassembling the monitoring box 15.

[0058] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A device for purifying and recovering dust in the exhaust gas of a jet mill, comprising a jet mill crushing tank (1), characterized in that: A feed pipe (2) is fixedly installed in a vertical middle position on the left side of the outer surface of the airflow mill pulverizing tank (1) by being plugged in and obliquely, the interior of the feed pipe (2) is communicated with the interior of the airflow mill pulverizing tank (1), and a feeding bin (3) is fixedly installed at one end of the feed pipe (2) away from the airflow mill pulverizing tank (1); Wherein, an air jet device is arranged at the inner bottom end of the jet mill pulverizing tank (1); Wherein, a classifying wheel (4) is rotatably mounted on the inner wall of the jet mill pulverizing tank (1) at a position above the feed pipe (2); A first connecting pipe (5) is plugged and fixedly installed on the right side of the outer surface of the airflow mill pulverizing tank (1) at a position above the classifying wheel (4), the first connecting pipe (5) is connected to the interior of the airflow mill pulverizing tank (1), and a collecting device is provided at one end of the first connecting pipe (5) away from the airflow mill pulverizing tank (1), a second connecting pipe (6) is provided on the collecting device, and a detection device is provided on the second connecting pipe (6).

2. The device for purifying and recovering dust in the exhaust gas of a jet mill according to claim 1, characterized in that: The jetting device comprises a nozzle (7), and the nozzle (7) is fixedly mounted on the inner bottom end of the airflow mill pulverizing tank (1); An air intake pipe (8) is plugged and fixedly installed at the position of the nozzle (7) at the left bottom end of the outer surface of the air flow mill pulverizing tank (1), and the air intake pipe (8) passes through the interior of the air flow mill pulverizing tank (1) and is fixedly connected to the nozzle (7).

3. The device for purifying and recovering dust in the exhaust gas of a jet mill according to claim 1, characterized in that: The collecting device comprises a collecting bin (9), the collecting bin (9) being fixedly connected to an end of the first connecting pipe (5) away from the airflow mill pulverizing tank (1), and the first connecting pipe (5) being in communication with the interior of the collecting bin (9); A collecting funnel (10) is fixedly mounted on the bottom end of the collecting bin (9), a conveying pipe (11) is fixedly mounted on the bottom end of the collecting funnel (10), and the collecting funnel (10) is in communication with the interior of the collecting bin (9).

4. The device for purifying and recovering dust in the exhaust gas of a jet mill according to claim 3, characterized in that: A filter screen (12) is fixedly installed on the inner top of the collection bin (9); A second connecting pipe (6) is plugged and fixedly installed on the right side of the outer surface of the collecting bin (9) at a position above the filter screen (12); the second connecting pipe (6) is in communication with the interior of the collecting bin (9); a fan sleeve (27) is fixedly installed at one end of the second connecting pipe (6) away from the collecting bin (9); and a fan (20) is fixedly installed inside the fan sleeve (27).

5. The device for purifying and recovering dust in the exhaust gas of a jet mill according to claim 4, characterized in that: The detection device comprises a third connecting tube (13), the third connecting tube (13) is plugged and fixedly mounted on the bottom side of the outer surface of the second connecting tube (6), and rectangular plates (14) are fixedly mounted on both left and right sides of the bottom end of the outer surface of the third connecting tube (13); Wherein, a filter disc (28) is fixedly installed on the inner wall of the second connecting pipe (6) corresponding to the right side of the third connecting pipe (13); A monitoring box (15) is provided at the bottom end of the third connecting tube (13); a T-shaped groove (16) is provided on the rear surface of the monitoring box (15) at a position corresponding to the two rectangular plates (14); the left and right sides of the interior of the T-shaped groove (16) are respectively slidably connected to the two rectangular plates (14); and a collecting groove (17) is provided at the bottom end of the interior of the T-shaped groove (16) at a position corresponding to the third connecting tube (13).

6. The device for purifying and recovering dust in the exhaust gas of a jet mill according to claim 5, characterized in that: A rectangular hole (18) is provided on the front surface of the monitoring box (15) at a position corresponding to the collecting tank (17), and a transparent scale plate (19) is fixedly installed inside the rectangular hole (18).

7. The device for purifying and recovering dust in the exhaust gas of a jet mill according to claim 5, characterized in that: Circular holes (21) are provided on the left and right sides of the upper surface of the monitoring box (15) at positions corresponding to the two rectangular plates (14), and fixed plates (22) are inserted and fixedly installed at the upper and lower ends of the two circular holes (21); A clamping rod (23) is inserted and slidably installed at the center position of the lower fixed plate (22), the bottom end of the clamping rod (23) is arranged with an inclined surface and extends to the inside of the T-shaped groove (16), a moving rod (24) is fixedly installed at the top end of the clamping rod (23), the top end of the moving rod (24) slides through the upper surface of the upper fixed plate (22), and a ball handle (25) is fixedly installed at the top end of the moving rod (24); A spring (26) is fixedly mounted on the top end of the clamping rod (23), the spring (26) is sleeved on the outside of the moving rod (24), and the top end of the spring (26) is fixedly mounted on the lower surface of the upper fixed plate (22).

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