Oxalic acid processing raw material vibrating screening machine and its operation method

Abstract

The application belongs to the technical field of oxalic acid processing, in particular to a raw material vibrating screening machine for oxalic acid processing and an operating method thereof. The screening machine comprises a base, an outer cover arranged above the base, the outer cover is arranged obliquely, a heating assembly is arranged at one end of the outer cover, a vibrating motor is fixedly connected to the top of the outer cover, two brackets are fixedly connected to the top of the base in a symmetrical manner, a second extension plate is fixedly connected to the top of each bracket, a connecting plate is fixedly connected to each side of the outer cover; when the screening machine screens the oxalic acid raw material, the air outlet pipeline blows hot air into the outer cover through the cooperation of the air pump and the heating wire, the oxalic acid raw material on the screen plate is heated and dried in the process of hot air circulation, and the oxalic acid raw material is prevented from absorbing moisture and sticking to the screen; when the hot air passes through the guide plate, the upward floating hot air is guided to impact the screen plate through the inclined surface at the bottom of the guide plate, so that the oxalic acid raw material in contact with the screen plate can be better heated and dried.

Description

Technical Field

[0001] This invention belongs to the field of oxalic acid processing technology, specifically a raw material vibration screening machine for oxalic acid processing and its operating method. Background Technology

[0002] Vibration screening of raw materials for oxalic acid processing is a core pretreatment process before oxalic acid production. Vibration screens remove impurities and classify oxalic acid raw materials (such as sodium formate, crude oxalic acid, and industrial oxalic acid) to provide stable and qualified raw materials for subsequent synthesis, crystallization, and refining. It is a key link to ensure the purity, yield, and equipment safety of oxalic acid. The high-frequency vibration generated by the vibration motor drives the screen to vibrate, removing mechanical impurities such as metal fragments, sand, woven bag fibers, lumps, and hard lumps from the oxalic acid.

[0003] However, oxalic acid raw materials are particularly prone to absorbing moisture and sticking to the screen. During the screening process, powdered oxalic acid will clog the screen, slowing down the screening process. In addition, the essence of oxalic acid that has absorbed moisture and clumps has not changed. It can still be used normally after being broken up. Existing screening machines will separate the clumped oxalic acid along with foreign objects such as stones. Furthermore, due to the moisture, a lot of powdered oxalic acid will stick to the surface of the clumped oxalic acid. When screening the oxalic acid raw materials, the powdered oxalic acid sticking to the surface of the clumped oxalic acid will also be separated, causing unnecessary waste.

[0004] Therefore, the present invention provides a vibrating screening machine for oxalic acid processing and its operating method. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and address the problem that oxalic acid raw materials are particularly prone to absorbing moisture and sticking to the screen, causing powdery oxalic acid to clog the screen during screening, resulting in increasingly slower screening speeds, and because the nature of oxalic acid that has absorbed moisture and clumps has not changed and can still be used normally after being broken up, existing screening machines will separate the clumped oxalic acid along with foreign objects such as stones. Furthermore, due to the moisture, a lot of powdery oxalic acid will stick to the surface of the clumped oxalic acid. When screening the oxalic acid raw materials, the powdery oxalic acid adhering to the surface of the clumped oxalic acid will also be screened off, causing unnecessary waste, this invention proposes a vibrating screening machine for oxalic acid processing and its operating method.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A vibrating screening machine for oxalic acid processing includes a base, an outer cover mounted on top of the base, the outer cover being inclined, a heating component mounted at one end of the outer cover, a vibrating motor fixedly connected to the top of the outer cover, two supports symmetrically fixedly connected to the top of the base, a second extension plate fixedly connected to the top of each of the two supports, connecting plates fixedly connected to both sides of the outer cover, and a first extension plate fixedly connected to one side of each of the two connecting plates. The bottoms of the connecting plates and the first extension plates are fixedly... A limiting post is connected, and a variable diameter spring is fixedly connected to the outer wall of the limiting post. The variable diameter spring located at the bottom of the connecting plate is fixedly connected to the bracket. The variable diameter spring located at the bottom of the first extension plate is fixedly connected to the second extension plate. A screen plate is fixedly connected to the bottom of the inner wall of the outer cover. A discharge port is opened on the bottom of the inner wall of the outer cover away from the screen plate. The height of the discharge port is lower than the height of the screen plate. A first sleeve box is fixedly connected to the top of the outer cover. A second sleeve box is fixedly connected to the inner wall of the first sleeve box. An installation block is fixedly connected to the top of the second sleeve box. A feeding component is provided inside the installation block.

[0007] Preferably, the feeding assembly includes a feeding chamber located inside the mounting block. The bottom of the mounting block has a first discharge groove, and the top of the mounting block has a second discharge groove. Both the first and second discharge grooves communicate with the feeding chamber. A servo motor is fixedly connected to the outer wall of the mounting block. The output end of the servo motor extends into the interior of the feeding chamber and is fixedly connected to a turntable. The turntable fits against the inner wall of the feeding chamber. Two grooves are symmetrically formed on the outer wall of the turntable. A feed hopper is fixedly connected to the top of the mounting block.

[0008] Preferably, the second set of boxes is installed at an angle, and two guide plates are symmetrically fixedly connected to the inner wall of the second set of boxes. Both guide plates are installed at an angle. The first discharge chute is located between the two guide plates. Several diversion plates are fixedly connected at equal intervals to the inner wall of the second set of boxes on the side away from the guide plates. The inclination angle of the several diversion plates increases sequentially from the middle to both sides.

[0009] Preferably, the heating assembly includes an air pump, which is fixedly installed on the outer wall of the outer cover. The output end of the air pump is fixedly connected to an air outlet pipe, one end of which extends into the interior of the outer cover. The input end of the air pump is fixedly connected to an air extraction pipe, and a heating box is fixedly connected to the outer wall of the air extraction pipe. An air inlet is provided at the bottom of the heating box, and a heating wire is fixedly connected inside the heating box.

[0010] Preferably, a number of guide plates are fixedly connected at equal intervals to the top of the inner wall of the outer cover. The guide plates are installed at an angle, and a number of breaking teeth are fixedly connected at equal intervals to the inclined surface at the bottom of the guide plates.

[0011] Preferably, a rotating plate is rotatably connected to the top of the inner wall of the outer cover. The rotating plate is L-shaped. A spring plate is fixedly connected between the rotating plate and the outer cover. A rotating shaft is rotatably connected to the inner wall of the outer cover. A cam is fixedly connected to the bottom of the rotating shaft. The cam works in conjunction with the rotating plate. A second bevel gear is fixedly connected to the top of the rotating shaft. The output end of the servo motor passes through the mounting block and is fixedly connected to a first bevel gear. The first bevel gear meshes with the second bevel gear.

[0012] Preferably, the top of the sieve plate is fixedly connected with several sets of mutually staggered diversion blocks at equal intervals. Each set consists of several diversion blocks arranged at equal intervals. The side of the diversion block closest to the first housing is set as a symmetrical inclined surface. The diversion block is fixedly connected to the outer cover.

[0013] Preferably, the other side of the diverter block is set as a straight surface, and a number of protrusions are fixedly connected at equal intervals. The side of the protrusions near the rotating plate is set as a symmetrical inclined surface.

[0014] Preferably, a cover box is fixedly connected to the bottom of the outer cover, the sieve plate is located inside the cover box, the bottom of the cover box is set as a symmetrical inclined surface, a connecting pipe is fixedly connected to the bottom of the cover box, a storage box is fixedly connected to the outer wall of the connecting pipe, and a drawer is slidably connected to the inner wall of the storage box.

[0015] An operating method for a vibrating screen for oxalic acid processing raw materials, applicable to the aforementioned vibrating screen for oxalic acid processing raw materials, comprises the following steps:

[0016] S1: Place the oxalic acid raw material into the feed hopper, start the servo motor to drive the turntable and groove to rotate, so that the oxalic acid raw material is quantitatively fed, and control the cam to rotate, so that the turntable swings intermittently, slowing down the flow rate of the oxalic acid raw material in the sieve.

[0017] S2: Start the vibration motor to drive the entire outer casing to vibrate, so that the oxalic acid raw material flows continuously downward inside the outer casing and is screened through the sieve plate;

[0018] S3: Start the air pump and heating wire to blow hot air into the outer cover through the air outlet pipe to heat and dry the oxalic acid raw material on the sieve plate.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The present invention discloses a vibrating screening machine for oxalic acid processing and its operating method. When screening oxalic acid raw materials, a gas pump is used in conjunction with a heating wire to blow hot air into the outer casing through the air outlet pipe. During the flow of hot air, the oxalic acid raw materials on the screen plate are heated and dried to prevent the oxalic acid raw materials from absorbing moisture and sticking to the screen. When the hot air passes through the guide plate, it is guided by the inclined surface at the bottom of the guide plate, causing the upward floating hot air to collide with the screen plate. This can better heat and dry the oxalic acid raw materials in contact with the screen plate. During the upward flow of hot air, it can blow up the clumps of oxalic acid that slide down the screen plate. When the blown-up clumps of oxalic acid collide with the bottom of the guide plate, they are broken by several crushing teeth. With the impact of the clumps of oxalic acid, it is also easy to peel off the oxalic acid powder adhering to the surface of the clumps of oxalic acid.

[0021] 2. The oxalic acid processing raw material vibrating screen and its operation method described in this invention, through the obstruction at the inclined surface of several mutually staggered diversion blocks and the turning of the rotating plate, pushes the oxalic acid powder sliding down the screen plate upward to splash upward, slowing down the falling speed of the oxalic acid powder and giving the screen plate sufficient screening time for the oxalic acid powder.

[0022] 3. The oxalic acid processing raw material vibrating screening machine and its operating method described in this invention can peel off the oxalic acid powder adhering to the surface of the oxalic acid by impacting the oxalic acid raw material with the rotating plate. When the rotating plate pushes the oxalic acid raw material upward to impact, the oxalic acid raw material impacts the straight surface on the other side of the diverting block. Through the impact with the convex surface of several protrusions, the oxalic acid clumps are broken. The broken oxalic acid clumps can pass through the screen plate, avoiding the waste caused by the oxalic acid clumps being screened out.

[0023] 4. The vibrating screen for oxalic acid processing and its operating method described in this invention enable quantitative feeding of oxalic acid raw materials through the rotation of the turntable, avoiding excessive feeding at one time that would cause oxalic acid raw materials to accumulate on the screen plate and affect screening. Guided by the inclined surfaces of two guide plates, the oxalic acid raw materials falling into the second set of boxes from the first feeding trough are concentrated at several diversion plates. The diversion of the oxalic acid raw materials by these diversion plates makes them more dispersed, facilitating the spread of the oxalic acid raw materials to be screened evenly on the screen plate, preventing the oxalic acid raw materials from concentrating in one area, causing screen plate blockage, and affecting the screening effect. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a perspective view of the outer cover and base of the present invention in use;

[0026] Figure 2 This is a perspective view of the outer cover of the present invention used in conjunction with the second box;

[0027] Figure 3 This is a cross-sectional view of the outer cover and the discharge port of the present invention in use;

[0028] Figure 4 This is an exploded view of the outer cover and base of the present invention in use;

[0029] Figure 5 This is a perspective view of the sieve plate and flow divider block used in conjunction with the present invention;

[0030] Figure 6 This is a cross-sectional view of the second housing of the present invention used in conjunction with the flow divider;

[0031] Figure 7 This is a cross-sectional view of the mounting block and turntable used in conjunction with the present invention;

[0032] Figure 8 This is a cross-sectional view of the outer cover and heating box of the present invention in use;

[0033] Figure 9 This is a cross-sectional view of the outer cover and guide plate of the present invention in use;

[0034] Figure 10 This is the present invention. Figure 2 Enlarged view of point A in the middle;

[0035] Figure 11 This is the present invention. Figure 8 Enlarged view of point B in the middle.

[0036] In the diagram: 1. Base; 2. Outer cover; 3. Bracket; 4. Connecting plate; 5. First extension plate; 6. Second extension plate; 7. Limiting post; 8. Variable diameter spring; 9. Screen plate; 10. Discharge port; 11. First sleeve box; 12. Second sleeve box; 13. Mounting block; 14. Feeding chamber; 15. First discharge chute; 16. Second discharge chute; 17. Feed hopper; 18. Servo motor; 19. Turntable; 20. Groove; 21. Guide plate; 22. Divider 23. Flow plate; 24. Air pump; 25. Air outlet pipe; 26. Air extraction pipe; 27. Heating box; 28. Air inlet; 29. ​​Heating wire; 20. Guide plate; 31. Crushing tooth; 32. Rotating plate; 33. Spring plate; 34. Rotating shaft; 35. First bevel gear; 36. Second bevel gear; 37. Diverter block; 38. Protrusion; 39. Cover box; 40. Connecting pipe; 41. Storage box; 42. Drawer; 43. Cam; 44. Vibration motor. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figures 1 to 11As shown, the present invention provides a technical solution: a vibrating screening machine for oxalic acid processing, comprising a base 1, an outer cover 2 disposed above the base 1, the outer cover 2 being inclined, a heating component disposed at one end of the outer cover 2, a vibrating motor 43 fixedly connected to the top of the outer cover 2, two supports 3 symmetrically fixedly connected to the top of the base 1, a second extension plate 6 fixedly connected to the top of each of the two supports 3, connecting plates 4 fixedly connected to both sides of the outer cover 2, and a first extension plate 5 fixedly connected to one side of each of the two connecting plates 4, the connecting plates 4 and... Limiting posts 7 are fixedly connected to the bottom of the first extension plate 5. A variable diameter spring 8 is fixedly connected to the outer wall of the limiting post 7. The variable diameter spring 8 located at the bottom of the connecting plate 4 is fixedly connected to the bracket 3. The variable diameter spring 8 located at the bottom of the first extension plate 5 is fixedly connected to the second extension plate 6. A sieve plate 9 is fixedly connected to the bottom of the inner wall of the outer cover 2. A discharge port 10 is opened on the bottom of the inner wall of the outer cover 2, away from the sieve plate 9. The height of the discharge port 10 is lower than the height of the sieve plate 9. A first sleeve box 11 is fixedly connected to the top of the outer cover 2. A second housing 12 is fixedly connected to the inner wall of the mounting block 13, and a mounting block 13 is fixedly connected to the top of the second housing 12. A feeding assembly is installed inside the mounting block 13. The feeding assembly includes a feeding cavity 14, which is located inside the mounting block 13. A first discharge groove 15 is located at the bottom of the mounting block 13, and a second discharge groove 16 is located at the top of the mounting block 13. Both the first discharge groove 15 and the second discharge groove 16 communicate with the feeding cavity 14. A servo motor 18 is fixedly connected to the outer wall of the mounting block 13, and the output end of the servo motor 18 extends... A turntable 19 is fixedly connected to the inside of the feeding chamber 14. The turntable 19 fits against the inner wall of the feeding chamber 14. Two grooves 20 are symmetrically opened on the outer wall of the turntable 19. A feed hopper 17 is fixedly connected to the top of the mounting block 13. A cover box 38 is fixedly connected to the bottom of the outer cover 2. The screen plate 9 is located inside the cover box 38. The bottom of the cover box 38 is set as a symmetrical slope. A connecting pipe 39 is fixedly connected to the bottom of the cover box 38. A storage box 40 is fixedly connected to the outer wall of the connecting pipe 39. A drawer 41 is slidably connected to the inner wall of the storage box 40.

[0039] In practical applications, four supports 3 are fixedly connected to the top of the base 1, which effectively improves the stability of the screening machine.

[0040] Through the above technical solution, the bracket 3 supports the outer cover 2 by cooperating with the variable diameter spring 8 and the limiting post 7. After the vibration motor 43 is started, the variable diameter spring 8 facilitates the vibration of the outer cover 2 (this is existing technology and will not be elaborated on here). Oxalic acid raw material is put into the feed hopper 17 and falls down along the second discharge chute 16. The servo motor 18 is started, which drives the turntable 19 to rotate, causing the groove 20 to rotate. When the groove 20 rotates to a position close to the second discharge chute 16, the oxalic acid raw material falls into the groove 20 along the second discharge chute 16. As the turntable 19 continues to rotate, when the groove 20 containing the oxalic acid raw material rotates to the first discharge chute 15, the oxalic acid raw material in the groove 20 falls into the second set of boxes 12 along the first discharge chute 15. This process is repeated. With the rotation of the turntable 19, the oxalic acid raw material can be quantitatively discharged, avoiding excessive discharge at one time and resulting in oxalic acid accumulation. Accumulated on the sieve plate 9, affecting sieving, the oxalic acid raw material enters the outer cover 2 after passing through the second set of boxes 12 and the first set of boxes 11. The vibration motor 43 is started, which drives the outer cover 2 to vibrate as a whole, so that the oxalic acid raw material flows continuously downward in the outer cover 2. When the oxalic acid raw material passes through the sieve plate 9, it is screened by the sieve plate 9. The oxalic acid powder with qualified size passes through the sieve plate 9 and falls into the cover box 38. Guided by the inclined surface at the bottom of the cover box 38, the oxalic acid powder enters the storage box 40 through the connecting pipe 39. The obstruction of the cover box 38 and the connecting pipe 39 prevents the oxalic acid powder after sieving from flying continuously. The oxalic acid powder after sieving can be taken out by removing the drawer 41. The remaining lumpy oxalic acid and foreign objects such as stones remain on the sieve plate 9 and continue to slide down along the inclined surface at the top of the sieve plate 9. When passing through the discharge port 10, it falls from the discharge port 10. The filtered foreign objects can be transported by the external conveyor.

[0041] Specifically, the second set of boxes 12 is installed at an angle, and two guide plates 21 are symmetrically fixedly connected to the inner wall of the second set of boxes 12. Both guide plates 21 are installed at an angle. The first discharge trough 15 is located between the two guide plates 21. Several diversion plates 22 are fixedly connected at equal intervals to the inner wall of the second set of boxes 12 and to the side away from the guide plates 21. The inclination angle of the diversion plates 22 increases from the middle to both sides.

[0042] Through the above technical solution, the oxalic acid raw material falling into the second set box 12 is guided by the inclined surfaces of the two guide plates 21 to concentrate on several diversion plates 22. After the diversion plates 22 divert the oxalic acid raw material, the oxalic acid raw material can be more dispersed, making it easier for the oxalic acid raw material to be screened to be spread flat on the screen plate 9, avoiding the oxalic acid raw material on the screen plate 9 from being concentrated in one area, causing the screen plate 9 to be blocked, thereby affecting the screening effect.

[0043] Specifically, the heating assembly includes an air pump 23, which is fixedly installed on the outer wall of the outer cover 2. The output end of the air pump 23 is fixedly connected to an air outlet pipe 24, one end of which extends into the interior of the outer cover 2. The input end of the air pump 23 is fixedly connected to an air extraction pipe 25. A heating box 26 is fixedly connected to the outer wall of the air extraction pipe 25. An air inlet 27 is provided at the bottom of the heating box 26. A heating wire 28 is fixedly connected inside the heating box 26. Several guide plates 29 are fixedly connected at equal intervals on the top of the inner wall of the outer cover 2. The guide plates 29 are installed at an angle. Several breaking teeth 30 are fixedly connected at equal intervals on the inclined surface at the bottom of the guide plates 29.

[0044] Through the above technical solution, when sieving oxalic acid raw materials, the air pump 23 is started, allowing air to enter from one end of the air extraction pipe 25. The gas enters the heating box 26 through the air inlet 27, and is heated by the heating wire 28 inside the heating box 26. The heated gas then enters the outer cover 2 from the air outlet 24 and continues to flow upwards inside the outer cover 2. During the flow of hot gas, the oxalic acid raw materials on the sieve plate 9 are heated and dried, preventing the oxalic acid raw materials from absorbing moisture and sticking to the screen. When the hot gas flows from the guide plate 2... When passing through the 9 points, the hot air floating upwards is guided by the inclined surface at the bottom of the guide plate 29 to impact the sieve plate 9. This allows for better heating and drying of the oxalic acid raw material in contact with the sieve plate 9. As the hot air flows upwards, it can blow up the clumps of oxalic acid that slide down the sieve plate 9. When the blown-up clumps of oxalic acid impact the bottom of the guide plate 29, they are broken up by several crushing teeth 30. With the impact of the clumps of oxalic acid, it is also easy to peel off the oxalic acid powder adhering to the surface of the clumps of oxalic acid.

[0045] Specifically, a rotating plate 31 is rotatably connected to the top of the inner wall of the outer cover 2. The rotating plate 31 is L-shaped. A spring plate 32 is fixedly connected between the rotating plate 31 and the outer cover 2. A rotating shaft 33 is rotatably connected to the inner wall of the outer cover 2. A cam 42 is fixedly connected to the bottom of the rotating shaft 33. The cam 42 works in conjunction with the rotating plate 31. A second bevel gear 35 is fixedly connected to the top of the rotating shaft 33. The output end of the servo motor 18 passes through the mounting block 13 and is fixedly connected to a first bevel gear 34. The first bevel gear 34 and the second bevel gear 35 are meshed together.

[0046] Through the above technical solution, when the servo motor 18 starts, it drives the first bevel gear 34 to rotate, which in turn drives the second bevel gear 35 to rotate, which in turn drives the rotating shaft 33 to rotate, causing the cam 42 to rotate. When the protruding end of the cam 42 rotates to a position close to the rotating plate 31, the rotating plate 31 is pushed to rotate under the pressure of the cam 42, pressing the spring plate 32. When the protruding end of the cam 42 rotates to a position far away from the rotating plate 31, the pressure of the cam 42 is lost, and the rotating plate 31 is driven to rebound upward under the action of the spring plate 32. Under the action of the rotating plate 31, the oxalic acid powder that is sliding down along the sieve plate 9 is pushed upward and splashed, thereby slowing down the falling speed of the oxalic acid powder, giving the sieve plate 9 sufficient time to sieve the oxalic acid powder, and under the impact of the rotating plate 31, the oxalic acid powder adhering to the surface of the oxalic acid agglomerates can be peeled off.

[0047] Specifically, the top of the sieve plate 9 is fixedly connected with several sets of mutually staggered diversion blocks 36 at equal intervals. Each set consists of several diversion blocks 36 arranged at equal intervals. The side of the diversion block 36 near the first set box 11 is set as a symmetrical inclined surface. The diversion block 36 is fixedly connected to the outer cover 2. The other side of the diversion block 36 is set as a straight surface and is fixedly connected with several protrusions 37 at equal intervals. The side of the protrusion 37 near the rotating plate 31 is set as a symmetrical inclined surface.

[0048] Based on the above technical solution, the feeding speed of oxalic acid powder on the sieve plate 9 is slowed down by the obstruction at the inclined surface of several mutually staggered diversion blocks 36. When the rotating plate 31 pushes the oxalic acid raw material upward to impact, the oxalic acid raw material impacts the straight surface on the other side of the diversion block 36. Through the impact with the convex surface of several protrusions 37, the agglomerated oxalic acid is broken. The broken agglomerated oxalic acid can pass through the sieve plate 9, avoiding the waste caused by the agglomerated oxalic acid being screened out.

[0049] An operating method for a vibrating screen for oxalic acid processing raw materials, applicable to the aforementioned vibrating screen for oxalic acid processing raw materials, comprises the following steps:

[0050] S1: Place the oxalic acid raw material into the feed hopper 17, start the servo motor 18 to drive the turntable 19 and groove 20 to rotate, so that the oxalic acid raw material is quantitatively fed out, and control the cam 42 to rotate, so that the rotating plate 31 swings intermittently, slowing down the flow rate of the oxalic acid raw material in the sieve.

[0051] S2: Start the vibration motor 43 to drive the outer cover 2 to vibrate as a whole, so that the oxalic acid raw material flows continuously downward inside the outer cover 2 and is screened by the sieve plate 9;

[0052] S3: Start the air pump 23 and heating wire 28 to blow hot air into the outer cover 2 through the air outlet pipe 24 to heat and dry the oxalic acid raw material on the sieve plate 9.

[0053] In use, oxalic acid raw material is placed into the feed hopper 17 and falls down along the second discharge chute 16. The servo motor 18 is started, driving the turntable 19 to rotate, causing the groove 20 to rotate. When the groove 20 rotates to near the second discharge chute 16, the oxalic acid raw material falls into the groove 20 along the second discharge chute 16. As the turntable 19 continues to rotate, when the groove 20 containing the oxalic acid raw material rotates to the first discharge chute 15, the oxalic acid raw material in the groove 20 falls into the second set of boxes 12 along the first discharge chute 15. This process is repeated. With the rotation of the turntable 19, the oxalic acid raw material can be quantitatively discharged, avoiding excessive discharge at one time that would cause the oxalic acid raw material to accumulate on the sieve plate 9, affecting screening. The inclined surfaces of the two guide plates 21 guide the material into the second set of boxes 12. The oxalic acid raw material inside is concentrated into several diversion plates 22. These plates divert the oxalic acid, making it more dispersed and allowing it to spread evenly on the sieve plate 9, preventing it from concentrating in one area and causing blockage, thus affecting the screening effect. After passing through the second set of boxes 12 and the first set of boxes 11, the oxalic acid enters the outer cover 2. The vibration motor 43 is activated, causing the outer cover 2 to vibrate continuously, allowing the oxalic acid to flow downwards within it. When the oxalic acid passes through the sieve plate 9, it is screened. Oxalic acid powder of the correct size passes through the sieve plate 9 and falls into the cover box 38. Guided by the inclined surface at the bottom of the cover box 38, the powder enters the storage tank through the connecting pipe 39. Inside the material box 40, the obstruction of the cover box 38 and the connecting pipe 39 prevents the oxalic acid powder after sieving from continuously flying. The oxalic acid powder after sieving can be removed by removing the drawer 41. The remaining clumps of oxalic acid and foreign objects such as stones remain on the sieve plate 9 and continue to slide down the inclined surface at the top of the sieve plate 9. When passing through the discharge port 10, it falls out of the discharge port 10. At the same time, the servo motor 18 starts, driving the first bevel gear 34 to rotate, causing the second bevel gear 35 to rotate, driving the rotating shaft 33 to rotate, causing the cam 42 to rotate. When the convex end of the cam 42 rotates to a position close to the rotating plate 31, the cam 42 pushes the rotating plate 31 to rotate under the pressure of the rotating plate 31, pressing the spring plate 32. When the convex end of the cam 42 rotates to a position away from the rotating plate 31, the pressure of the cam 42 is lost. Under the action of spring plate 32, the rotating plate 31 rebounds upward. The rotation of the rotating plate 31 pushes the oxalic acid powder sliding down the sieve plate 9 upward, thus slowing the falling speed of the oxalic acid powder and giving the sieve plate 9 sufficient time to sieve it. Furthermore, the impact of the rotating plate 31 can peel off the oxalic acid powder adhering to the surface of the agglomerated oxalic acid. The obstruction at the inclined surfaces of several staggered diversion blocks 36 further slows the feeding speed of the oxalic acid powder on the sieve plate 9. When the rotating plate 31 pushes the oxalic acid material upward, the material impacts the straight surface on the other side of the diversion block 36. Through the impact with the convex surfaces of several protrusions 37, the agglomerated oxalic acid is broken. The broken agglomerated oxalic acid can then pass through the sieve plate 9, avoiding waste caused by the removal of agglomerated oxalic acid.When sieving oxalic acid raw materials, the air pump 23 is started, and air is introduced into one end of the air extraction pipe 25. The gas enters the heating box 26 through the air inlet 27. After being heated by the heating wire 28 in the heating box 26, the gas is heated. The heated gas enters the outer cover 2 through the air outlet 24 and flows upward continuously in the outer cover 2. During the flow of hot gas, the oxalic acid raw materials on the sieve plate 9 are heated and dried to prevent the oxalic acid raw materials from absorbing moisture and sticking to the screen. When the hot gas passes through the guide plate 29, it is guided by the inclined surface at the bottom of the guide plate 29, causing the upward floating hot gas to collide with the sieve plate 9. This can better heat and dry the oxalic acid raw materials in contact with the sieve plate 9. During the upward flow of hot gas, the clumps of oxalic acid that slide down the sieve plate 9 can be blown up. When the blown-up clumps of oxalic acid collide with the bottom of the guide plate 29, they are broken up by several crushing teeth 30. With the impact of the clumps of oxalic acid, it is also easy to peel off the oxalic acid powder that is stuck to the surface of the clumps of oxalic acid. ,

[0054] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0055] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibrating screening machine for oxalic acid processing, characterized in that, The device includes a base (1), an outer cover (2) on top of the base (1), the outer cover (2) being inclined, a heating component at one end of the outer cover (2), a vibration motor (43) fixedly connected to the top of the outer cover (2), two supports (3) symmetrically fixedly connected to the top of the base (1), a second extension plate (6) fixedly connected to the top of each of the two supports (3), connecting plates (4) fixedly connected to both sides of the outer cover (2), a first extension plate (5) fixedly connected to one side of each of the two connecting plates (4), a limit post (7) fixedly connected to the bottom of each connecting plate (4) and the first extension plate (5), and a variable diameter spring (8) fixedly connected to the outer wall of the limit post (7). The variable diameter spring (8) located at the bottom of the connecting plate (4) is fixedly connected to the bracket (3), the variable diameter spring (8) located at the bottom of the first extension plate (5) is fixedly connected to the second extension plate (6), the bottom of the inner wall of the outer cover (2) is fixedly connected to the sieve plate (9), the bottom of the inner wall of the outer cover (2) and the side away from the sieve plate (9) is provided with a discharge port (10), the height of the discharge port (10) is lower than the height of the sieve plate (9), the top of the outer cover (2) is fixedly connected to the first sleeve box (11), the inner wall of the first sleeve box (11) is fixedly connected to the second sleeve box (12), the top of the second sleeve box (12) is fixedly connected to the mounting block (13), and the inside of the mounting block (13) is provided with a feeding component.

2. The raw material vibrating screening machine for oxalic acid processing according to claim 1, characterized in that, The feeding assembly includes a feeding chamber (14), which is located inside the mounting block (13). The bottom of the mounting block (13) is provided with a first feeding groove (15), and the top of the mounting block (13) is provided with a second feeding groove (16). Both the first feeding groove (15) and the second feeding groove (16) are connected to the feeding chamber (14). A servo motor (18) is fixedly connected to the outer wall of the mounting block (13). The output end of the servo motor (18) extends into the interior of the feeding chamber (14) and is fixedly connected to a turntable (19). The turntable (19) fits against the inner wall of the feeding chamber (14). Two grooves (20) are symmetrically opened on the outer wall of the turntable (19). A feed hopper (17) is fixedly connected to the top of the mounting block (13).

3. The raw material vibrating screen for oxalic acid processing according to claim 2, characterized in that, The second set of boxes (12) is installed at an angle. Two guide plates (21) are symmetrically fixedly connected to the inner wall of the second set of boxes (12). Both guide plates (21) are installed at an angle. The first discharge trough (15) is located between the two guide plates (21). Several diversion plates (22) are fixedly connected at equal intervals on the inner wall of the second set of boxes (12) away from the guide plates (21). The inclination angle of the several diversion plates (22) increases from the middle to both sides.

4. The raw material vibrating screen for oxalic acid processing according to claim 3, characterized in that, The heating assembly includes an air pump (23), which is fixedly installed on the outer wall of the outer cover (2). The output end of the air pump (23) is fixedly connected to an air outlet pipe (24), one end of which extends into the interior of the outer cover (2). The input end of the air pump (23) is fixedly connected to an air extraction pipe (25), and a heating box (26) is fixedly connected to the outer wall of the air extraction pipe (25). An air inlet (27) is provided at the bottom of the heating box (26), and a heating wire (28) is fixedly connected inside the heating box (26).

5. A vibrating screening machine for oxalic acid processing according to claim 4, characterized in that, The top of the inner wall of the outer cover (2) is fixedly connected with several guide plates (29) at equal intervals. The guide plates (29) are installed at an angle. Several breaking teeth (30) are fixedly connected at equal intervals on the inclined surface at the bottom of the guide plates (29).

6. The raw material vibrating screening machine for oxalic acid processing according to claim 5, characterized in that, A rotating plate (31) is rotatably connected to the top of the inner wall of the outer cover (2). The rotating plate (31) is L-shaped. A spring plate (32) is fixedly connected between the rotating plate (31) and the outer cover (2). A rotating shaft (33) is rotatably connected to the inner wall of the outer cover (2). A cam (42) is fixedly connected to the bottom of the rotating shaft (33). The cam (42) works in conjunction with the rotating plate (31). A second bevel gear (35) is fixedly connected to the top of the rotating shaft (33). The output end of the servo motor (18) passes through the mounting block (13) and is fixedly connected to a first bevel gear (34). The first bevel gear (34) meshes with the second bevel gear (35).

7. A vibrating screening machine for oxalic acid processing according to claim 6, characterized in that, The top of the sieve plate (9) is fixedly connected with several sets of mutually staggered diversion blocks (36). Each set consists of several diversion blocks (36) arranged at equal intervals. The diversion block (36) is set as a symmetrical inclined surface on the side near the first set box (11). The diversion block (36) is fixedly connected to the outer cover (2).

8. A vibrating screening machine for oxalic acid processing according to claim 7, characterized in that, The other side of the diverter block (36) is set as a straight surface, and a number of protrusions (37) are fixedly connected at equal intervals. The side of the protrusions (37) near the rotating plate (31) is set as a symmetrical inclined surface.

9. A vibrating screening machine for oxalic acid processing according to claim 8, characterized in that, The bottom of the outer cover (2) is fixedly connected to a cover box (38), the sieve plate (9) is located inside the cover box (38), the bottom of the cover box (38) is set as a symmetrical inclined surface, the bottom of the cover box (38) is fixedly connected to a connecting pipe (39), the outer wall of the connecting pipe (39) is fixedly connected to a storage box (40), and the inner wall of the storage box (40) is slidably connected to a drawer (41).

10. A method for operating a vibrating screen for oxalic acid processing raw materials, the method being applicable to the vibrating screen for oxalic acid processing raw materials as described in claim 9, characterized in that... The steps for this operation are as follows: S1: Place the oxalic acid raw material into the feed hopper (17), start the servo motor (18), drive the turntable (19) and groove (20) to rotate, so that the oxalic acid raw material is quantitatively fed, and control the cam (42) to rotate, drive the rotating plate (31) to swing intermittently, and slow down the flow rate of the oxalic acid raw material in the sieve; S2: Start the vibration motor (43) to drive the outer cover (2) to vibrate as a whole, so that the oxalic acid raw material flows continuously downward inside the outer cover (2) and is screened by the sieve plate (9); S3: Start the air pump (23) and heating wire (28) to blow hot air into the outer cover (2) through the air outlet pipe (24) to heat and dry the oxalic acid raw material on the sieve plate (9).

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