Impurity removal device for zinc sulfate heptahydrate preparation

Abstract

The invention relates to the technical field of impurity removal devices for zinc sulfate heptahydrate preparation, and discloses an impurity removal device for zinc sulfate heptahydrate preparation. Comprising a vibration platform, a vibration sorting frame is installed on the vibration platform, an annular screen belt, an annular material vibration belt, a color sorting mechanism, an elevator and a winnowing mechanism are sequentially installed on the vibration sorting frame in the conveying direction of zinc sulfate heptahydrate, a uniform stirring frame is slidably connected with the vibration sorting frame, and a set of first material stirring plates are installed on the uniform stirring frame and located above the annular screen belt; and a group of second material stirring plates are mounted on the uniform stirring frame and correspond to the position above the annular material vibrating belt. When the device works, removal of large-particle impurities in the preparation process of the zinc sulfate heptahydrate, color sorting of different-color impurities of the zinc sulfate heptahydrate and winnowing and impurity removal of the zinc sulfate heptahydrate after color sorting can be integrally achieved; therefore, the functionality of the impurity removal device and the impurity removal effect and the impurity removal cleanliness of the zinc sulfate heptahydrate are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of impurity removal devices for preparing zinc sulfate heptahydrate, in particular to an impurity removal device for preparing zinc sulfate heptahydrate. Background Art

[0002] Zinc sulfate heptahydrate is also known as zinc alum. It is slightly soluble in ethanol but soluble in water. It is often used as a mordant, wood preservative and bleaching agent. Zinc sulfate heptahydrate is toxic and will damage the natural environment. Impurities will be generated during the preparation of zinc sulfate heptahydrate. Therefore, in order to ensure the quality of zinc sulfate heptahydrate, it is necessary to filter out the impurities generated during the preparation of zinc sulfate heptahydrate through an impurity removal device.

[0003] In the prior art, a patent document with publication number CN219815427U discloses an impurity removal device for preparing zinc sulfate heptahydrate, comprising a filter cartridge, a support plate symmetrically fixed to the inner wall of the filter cartridge, and a filter screen is fitted and connected to the upper surface of the support plate, an upper cover is sleeved on the outer wall of the upper end of the filter cartridge, and a positioning ring is fixedly connected to the outer wall of the lower end of the upper cover, and both sides of the outer walls of the upper end of the filter cartridge are fixedly connected to a bracket, and a locking mechanism is provided on the inner wall of the bracket. The above device is convenient for full cleaning to avoid affecting the reuse of the device, but the above device is not convenient for integrated realization of impurity screening of zinc sulfate heptahydrate, color sorting of zinc sulfate heptahydrate after impurity screening, and air separation of zinc sulfate heptahydrate after color sorting, and then it is not convenient to improve the functionality and impurity removal cleanliness of the impurity removal device. Based on this, the present invention provides an impurity removal device for preparing zinc sulfate heptahydrate to solve the technical problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide an impurity removal device for preparing zinc sulfate heptahydrate, which solves the problem that the existing device proposed in the background technology is not convenient for integrated realization of impurity filtration and screening of zinc sulfate heptahydrate, color sorting of zinc sulfate heptahydrate after impurity filtration and air sorting of zinc sulfate heptahydrate after color sorting, and then it is not convenient to improve the functionality and impurity removal cleanliness of the impurity removal device. In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A device for removing impurities for preparing zinc sulfate heptahydrate, comprising a vibration platform, a vibration selection frame installed on the vibration platform, and an annular screen belt, an annular vibration belt, a color selection mechanism, an elevator and a wind selection mechanism installed on the vibration selection frame in sequence along the conveying direction of the zinc sulfate heptahydrate;

[0006] The uniform shifting frame is slidably connected with the vibration selection frame, a group of first material shifting plates are installed on the uniform shifting frame and above the power annular screening belt, and a group of second material shifting plates are installed on the uniform shifting frame and above the annular vibration belt;

[0007] The reciprocating transmission assembly is installed on the vibrating frame and drives the leveling frame to move back and forth within a set stroke;

[0008] The transmission module is installed on the vibrating frame, and the reciprocating transmission assembly, the annular screen belt, the annular vibrating belt and the elevator are all driven by the transmission module;

[0009] The feed hopper is installed on the vibrating frame and arranged above the annular screen belt.

[0010] Preferably, the vibration platform comprises a base frame, a group of damping shock absorbing parts are installed between the base frame and the vibration selection frame, and a vibration motor is installed on the vibration selection frame.

[0011] Preferably, the transmission module includes a servo motor fixed on the vibrating frame, a group of first guide rollers and a group of second guide rollers rotatably connected to the vibrating frame, and a reverse shaft rotatably connected to the vibrating frame, a group of the first guide rollers are all transmission connected to the annular vibrating belt, a group of the second guide rollers are all transmission connected to the annular screen belt, the output shaft end of the servo motor is fixedly connected to one of the first guide rollers, and reverse gears are fixedly installed on the reverse shaft and one of the second guide rollers, the two reverse gears are meshed with each other, one of the first guide rollers is transmission connected to the reverse shaft through a first chain belt, and one of the second guide rollers is transmission connected to the elevator through a fifth chain belt.

[0012] Preferably, the annular screen belt is provided with screening holes equidistantly distributed thereon, the screening holes are circular holes, the screening holes are used for filtering zinc sulfate heptahydrate, the annular screen belt is arranged directly above the annular vibrating belt, a waste discharge nozzle is fixedly installed on the vibrating frame at a position corresponding to the annular screen belt discharge port, and the rotation direction of the annular screen belt is opposite to that of the annular vibrating belt.

[0013] Preferably, the reciprocating transmission assembly includes a horizontal shaft and a vertical shaft rotatably connected to the vibration frame, the horizontal shaft is transmission connected to the second guide roller through a third chain belt, the horizontal shaft and the vertical shaft are both equipped with linked bevel gears, the two linked bevel gears are meshed with each other, a missing gear is installed on the vertical shaft, a driven gear plate is fixedly installed on the evenly shifting frame, the missing gear is transmission connected to the driven gear plate, a group of guide rods slidably connected to the vibration frame are installed on the evenly shifting frame, and a return spring is sleeved on each of the guide rods and corresponding to the position between the vibration frame and the evenly shifting frame.

[0014] Preferably, the movement direction of the leveling frame is perpendicular to the conveying direction of the annular screen belt.

[0015] Preferably, the color sorting mechanism includes a color sorting frame and an annular transparent belt, a group of adjustment push rods are installed between the color sorting frame and the vibration selection frame, a differential motor is installed on the side of the color sorting frame, the inner wall of the color sorting frame is rotatably connected to a group of third guide rollers, each of the third guide rollers is transmission-connected to the annular transparent belt, the output shaft end of the differential motor is fixedly connected to the third guide roller, a vertically arranged color sorting flow gap is provided between the annular transparent belt and the annular vibration material belt, and a group of first CCD cameras are installed on the vibration selection frame at a position corresponding to the inner side of the annular vibration material belt A group of second CCD cameras are installed on the vibration selection frame and at a position corresponding to the position below the color selection flow slot. The collection ends of the first CCD camera and the second CCD camera are both facing the color selection flow slot. A jet diversion component is provided on the vibration selection frame and at a position corresponding to the position below the second CCD camera. The inner wall of the color selection frame is rotatably connected to two brush shafts, and spiral bristles are fixedly installed on the two brush shafts. The two spiral bristles are both in contact with the annular transparent belt. A fourth chain belt is transmission-connected to the third guide roller, and the two brush shafts are transmission-connected to the fourth chain belt.

[0016] Preferably, the annular transparent belt and the annular vibration material belt are both made of transparent materials.

[0017] Preferably, the jet diversion component includes an air storage tank connected to the vibration selection frame, the air outlet end of the air storage tank is connected to a jet pipe, the jet pipe is connected to a group of jet heads, each of the jet heads and the jet pipe is connected at a point where the jet heads are connected, a solenoid valve is provided, a single-chip microcomputer is installed on the feed hopper, the first CCD camera, the second CCD camera and the solenoid valve are electrically connected to the single-chip microcomputer, a color selection flow channel and a discharge flow channel are respectively provided inside the color selection frame and at a position corresponding to the position below the jet head, and the discharge flow channel is connected to the elevator.

[0018] Preferably, the air separation mechanism includes an air separation box fixedly connected to the vibration frame, the air separation box is provided with a material discharge channel, the discharge port of the elevator is connected with the material discharge channel, the air separation box is connected with a hair dryer facing the material discharge channel, the interior of the air separation box is provided with an air separation channel cooperating with the hair dryer, and the bottom ends of the material discharge channel and the air separation channel are both open.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0020] 1. When the present invention is working, it can realize the removal of large particle impurities in the preparation process of zinc sulfate heptahydrate, the color sorting of different color impurities in zinc sulfate heptahydrate and the air separation and impurity removal of zinc sulfate heptahydrate after color sorting in an integrated manner. By realizing the above-mentioned integrated screening function, the functionality of the impurity removal device and the impurity removal effect and impurity removal degree of zinc sulfate heptahydrate are effectively improved.

[0021] 2. When zinc sulfate heptahydrate is prepared and impurities are removed in the present invention, the vibration motor outputs the vibration frequency in a set state. After the vibration motor outputs the vibration frequency, the vibration selection frame vibrates at the set frequency. After the vibration selection frame vibrates within the set frequency, vibration screening of zinc sulfate heptahydrate and vibration shaking during color sorting of zinc sulfate heptahydrate are achieved. By achieving the vibration shaking effect of zinc sulfate heptahydrate during color sorting, the color sorting accuracy is improved.

[0022] 3. In the present invention, the reciprocating motion of the leveling frame is used to increase the movement amplitude of zinc sulfate heptahydrate on the annular screen belt 3 and the annular vibrating belt, and to improve the thickness uniformity of zinc sulfate heptahydrate on the annular screen belt 3 and the annular vibrating belt and the screening efficiency of zinc sulfate heptahydrate through the sieve holes.

[0023] 4. The present invention realizes double visual imaging of zinc sulfate heptahydrate by setting the first CCD camera and the second CCD camera, thereby improving the color sorting accuracy of the device. The constant speed flow of zinc sulfate heptahydrate in the color sorting flow gap is set so that the two groups of CCD cameras can accurately locate the zinc sulfate heptahydrate of different colors. The spiral bristles are set to effectively ensure the surface cleanliness of the annular transparent belt, thereby ensuring and improving the color sorting accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an impurity removal device for preparing zinc sulfate heptahydrate;

[0025] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0026] Figure 3 for Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0027] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of;

[0028] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at C in the middle;

[0029] Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at D in the middle;

[0030] Figure 7 It is a schematic diagram of the structure of the first material-diverting plate and the annular transparent belt;

[0031] Figure 8 for Figure 7 A schematic diagram of the local enlarged structure at E in the middle;

[0032] Fig. 9 For Figure 7 A schematic diagram of the local enlarged structure at F in the middle;

[0033] Fig.10 for Figure 7 Schematic diagram of the local enlarged structure at G in the middle.

[0034] Among them: 1. Vibrating frame; 2. Elevator; 3. Annular screening belt; 4. Annular vibrating belt; 5. Evenly shifting frame; 6. First shifting plate; 7. Second shifting plate; 8. Feed hopper; 9. Base frame; 10. Damping shock absorber; 11. Vibrating motor; 12. Servo motor; 13. First guide roller; 14. Second guide roller; 15. Reverse shaft; 16. Reverse gear; 17. Screening hole; 18. Waste discharge nozzle; 19. Horizontal shaft; 20. Vertical shaft; 21. Missing gear; 22. Driven gear plate; 23. Return spring; 24. Color sorting frame; 25. Annular transparent belt; 26. Adjustment push rod; 27. Differential motor; 28. Third guide roller; 29. ​​First CCD camera; 30. Second CCD camera; 31. Brush shaft; 32. Spiral bristles; 33. Air storage tank; 34. Jet pipe; 35. Single chip microcomputer; 36. Color sorting flow channel; 37. Discharge flow channel; 38. Air separation box; 39. Discharge flow channel; 40. Blower; 41. Air separation flow channel. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-10 , an impurity removal device for preparing zinc sulfate heptahydrate, comprising a vibration platform, on which a vibration selection frame 1 is installed;

[0037] The vibration platform includes a base frame 9, a group of damping shock absorbing parts 10 are installed between the base frame 9 and the vibration selection frame 1, and a vibration motor 11 is installed on the vibration selection frame 1;

[0038] The feed hopper 8 is installed on the vibration frame 1 and arranged above the annular screen belt 3 .

[0039] When zinc sulfate heptahydrate is prepared and impurities are removed, the vibration motor 11 outputs the vibration frequency in a set state. After the vibration motor 11 outputs the vibration frequency, the vibration selection frame 1 vibrates at the set frequency. After the vibration selection frame 1 vibrates within the set frequency, the vibration screening of zinc sulfate heptahydrate and the vibration shaking of zinc sulfate heptahydrate during color sorting are achieved. The vibration shaking effect of zinc sulfate heptahydrate during color sorting is achieved, which helps to improve the color sorting accuracy;

[0040] An annular screen belt 3, an annular vibrating belt 4, a color sorting mechanism, an elevator 2 and an air selection mechanism are sequentially installed on the vibrating frame 1 along the conveying direction of zinc sulfate heptahydrate;

[0041] The annular screen belt 3 is provided with sieving holes 17 at equal intervals. The sieving holes 17 are circular holes and are used for filtering zinc sulfate heptahydrate.

[0042] The pore size of the screening hole 17 can be customized according to the actual filtering requirements;

[0043] The sieve holes 17 are used to filter out large particles of impurities in zinc sulfate heptahydrate;

[0044] The uniform shifting frame 5 is slidably connected to the vibration selection frame 1. A set of first material shifting plates 6 are installed on the uniform shifting frame 5 and above the circular screen belt 3. A set of second material shifting plates 7 are installed on the uniform shifting frame 5 and above the circular vibration belt 4.

[0045] The reciprocating transmission assembly is installed on the vibration frame 1 and drives the leveling frame 5 to reciprocate within a set stroke;

[0046] The transmission module is installed on the vibrating frame 1, and the reciprocating transmission assembly, the annular screen belt 3, the annular vibrating belt 4 and the elevator 2 are all driven by the transmission module;

[0047] The transmission module includes a servo motor 12 fixed on the vibrating frame 1, a group of first guide rollers 13 and a group of second guide rollers 14 rotatably connected to the vibrating frame 1, and a reverse shaft 15 rotatably connected to the vibrating frame 1. A group of first guide rollers 13 are all connected to the annular vibrating belt 4, and a group of second guide rollers 14 are all connected to the annular screen belt 3. The output shaft end of the servo motor 12 is fixedly connected to a first guide roller 13, and a reverse gear 16 is fixedly installed on the reverse shaft 15 and a second guide roller 14. The two reverse gears 16 are meshed with each other. A first guide roller 13 is connected to the reverse shaft 15 through a first chain belt, and a second guide roller 14 is connected to the elevator 2 through a fifth chain belt.

[0048] The annular screen belt 3 is arranged directly above the annular vibrating belt 4 , and a waste discharge nozzle 18 is fixedly installed on the vibration frame 1 and corresponds to the position of the discharge port of the annular screen belt 3 . The rotation direction of the annular screen belt 3 is opposite to that of the annular vibrating belt 4 .

[0049] By setting the reverse shaft 15 and the reverse gear 16, the reverse rotation operation of the annular screen belt 3 and the annular vibrating belt 4 is realized;

[0050] The waste discharge nozzle 18 is used to discharge the large particles of zinc sulfate heptahydrate impurities screened out by the annular screen belt 3;

[0051] The fine zinc sulfate heptahydrate screened by the annular screen belt 3 falls onto the annular vibrating belt 4, and the annular vibrating belt 4 sends the screened zinc sulfate heptahydrate into the color sorting flow gap for color sorting operation;

[0052] The reciprocating transmission assembly includes a horizontal shaft 19 and a vertical shaft 20 which are rotatably connected to the vibration frame 1. The horizontal shaft 19 is transmission-connected to a second guide roller 14 through a third chain belt. Both the horizontal shaft 19 and the vertical shaft 20 are provided with linkage bevel gears, which mesh with each other. A missing gear 21 is provided on the vertical shaft 20. A driven gear plate 22 is fixedly provided on the uniform shifting frame 5. The missing gear 21 is transmission-connected to the driven gear plate 22. A group of guide rods which are slidably connected to the vibration frame 1 are provided on the uniform shifting frame 5. A return spring 23 is sleeved on each guide rod and corresponds to the position between the vibration frame 1 and the uniform shifting frame 5.

[0053] When the second guide roller 14 rotates, the horizontal shaft 19 and the vertical shaft 20 rotate at a set speed. After the vertical shaft 20 rotates, the missing gear 21 is driven to rotate. After the missing gear 21 rotates, the driven gear plate 22 is driven to rotate. Through the arrangement of the driven gear plate 22, the missing gear 21 and the return spring 23, the uniform shifting frame 5 reciprocates within the set stroke.

[0054] The reciprocating motion of the leveling frame 5 increases the movement amplitude of the zinc sulfate heptahydrate on the annular screen belt 3 and the annular vibrating belt 4, and increases the thickness uniformity of the zinc sulfate heptahydrate on the annular screen belt 3 and the annular vibrating belt 4 and the screening efficiency of the zinc sulfate heptahydrate through the screening holes 17;

[0055] The moving direction of the leveling frame 5 is perpendicular to the conveying direction of the annular screen belt 3 .

[0056] The color sorting mechanism includes a color sorting frame 24 and an annular transparent belt 25. A set of adjusting push rods 26 are installed between the color sorting frame 24 and the vibration sorting frame 1.

[0057] By adjusting the setting of the push rod 26, the distance between the color sorting frame 24 and the vibration sorting frame 1 is adjusted, and by adjusting the distance between the color sorting frame 24 and the vibration sorting frame 1, the width of the color sorting flow slot is adjusted;

[0058] By adjusting the width of the color sorting flow slot, the thickness of zinc sulfate heptahydrate in the color sorting flow slot is adjusted;

[0059] A differential motor 27 is installed on the side of the color sorting frame 24. A group of third guide rollers 28 are rotatably connected to the inner wall of the color sorting frame 24. Each third guide roller 28 is transmission-connected to the annular transparent belt 25. The output shaft end of the differential motor 27 is fixedly connected to the third guide roller 28.

[0060] When the differential motor 27 outputs a rotation speed, the annular permeable belt 25 and the annular vibrating belt 4 rotate at the same speed;

[0061] When the annular permeable belt 25 is working, it rotates counterclockwise, and when the annular vibrating belt 4 rotates, it rotates counterclockwise;

[0062] The annular transparent belt 25 and the annular vibration material belt 4 are both made of transparent materials;

[0063] A vertically arranged color sorting flow gap is provided between the annular transparent belt 25 and the annular vibrating belt 4, a group of first CCD cameras 29 are installed on the vibrating frame 1 at a position corresponding to the inner side of the annular vibrating belt 4, a group of second CCD cameras 30 are installed on the vibrating frame 1 at a position corresponding to below the color sorting flow gap, the collecting ends of the first CCD camera 29 and the second CCD camera 30 are both directly opposite to the color sorting flow gap, a jet diversion component is provided on the vibrating frame 1 at a position corresponding to below the second CCD camera 30, the inner wall of the color sorting frame 24 is rotatably connected to two brush shafts 31, spiral bristles 32 are fixedly installed on the two brush shafts 31, the two spiral bristles 32 are both in contact with the annular transparent belt 25, a fourth chain belt is transmission-connected to a third guide roller 28, and the two brush shafts 31 are transmission-connected to the fourth chain belt.

[0064] By setting the first CCD camera 29 and the second CCD camera 30, double visual imaging of zinc sulfate heptahydrate is achieved, thereby improving the color sorting accuracy of the device;

[0065] By setting the constant speed flow of zinc sulfate heptahydrate in the color sorting flow gap, two groups of CCD cameras can accurately locate the zinc sulfate heptahydrate of different colors;

[0066] By setting the spiral bristles 32, the surface cleanliness of the annular transparent belt 25 is effectively guaranteed, thereby ensuring and improving the color sorting accuracy of the device;

[0067] The jet diversion component includes an air tank 33 connected to the vibration selection frame 1, the air outlet end of the air tank 33 is connected to the jet pipe 34, the jet pipe 34 is connected to a group of jet heads, each jet head is connected to the jet pipe 34. A solenoid valve is provided at the connection point, and a single-chip microcomputer 35 is installed on the feed hopper 8. The first CCD camera 29, the second CCD camera 30 and the solenoid valve are electrically connected to the single-chip microcomputer 35. The interior of the color sorting frame 24 and the position corresponding to the bottom of the jet head are respectively provided with a color sorting flow channel 36 and a discharge flow channel 37, and the discharge flow channel 37 is connected to the elevator 2.

[0068] When working, the single chip microcomputer 35 realizes the directional blowing off of the heterochromatic zinc sulfate heptahydrate according to the imaging results of the first CCD camera 29 and the second CCD camera 30;

[0069] During color sorting, zinc sulfate heptahydrate of different colors flows out through the color sorting flow channel 36;

[0070] The air separation mechanism includes an air separation box 38 fixedly connected to the vibration frame 1, a material discharge channel 39 is provided on the air separation box 38, a discharge port of the elevator 2 is connected to the material discharge channel 39, a blower 40 is connected to the air separation box 38 and faces the material discharge channel 39, an air separation channel 41 cooperating with the blower 40 is provided inside the air separation box 38, and the bottom ends of the material discharge channel 39 and the air separation channel 41 are both open.

[0071] During air separation, heavy particle impurities in zinc sulfate heptahydrate are discharged through the discharge flow channel 39, and light qualified zinc sulfate heptahydrate is discharged through the air separation flow channel 41;

[0072] The working principle of the present invention is: during the impurity removal operation, the servo motor 12 and the differential motor 27 work at the set power, the vibration motor 11 outputs the vibration frequency at the set state, and after the vibration motor 11 outputs the vibration frequency, the vibration selection frame 1 vibrates at the set frequency. After the vibration selection frame 1 vibrates within the set frequency, the vibration screening of zinc sulfate heptahydrate and the vibration shaking of zinc sulfate heptahydrate during color sorting are realized. By realizing the vibration shaking effect of zinc sulfate heptahydrate during color sorting, it is helpful to improve the color sorting accuracy, and the fine zinc sulfate heptahydrate screened by the annular screen belt 3 is Fine zinc sulfate heptahydrate falls onto the annular vibrating belt 4, which delivers the screened zinc sulfate heptahydrate into the color sorting flow gap for color sorting. The waste discharge nozzle 18 is used to discharge the large particles of zinc sulfate heptahydrate impurities screened by the annular screen belt 3. When the second guide roller 14 rotates, the horizontal shaft 19 and the vertical shaft 20 rotate at a set speed. After the vertical shaft 20 rotates, it drives the missing gear 21 to rotate. After the missing gear 21 rotates, it drives the driven gear plate 22 to rotate. Through the settings of the driven gear plate 22, the missing gear 21 and the reset spring 23, , so that the uniform shifting frame 5 reciprocates within the set stroke, and the reciprocating motion of the uniform shifting frame 5 is used to increase the movement amplitude of zinc sulfate heptahydrate on the annular screen belt 3 and the annular vibrating material belt 4, and to improve the thickness uniformity of zinc sulfate heptahydrate on the annular screen belt 3 and the annular vibrating material belt 4 and the screening efficiency of zinc sulfate heptahydrate through the screening holes 17. By setting the first CCD camera 29 and the second CCD camera 30, double visual imaging of zinc sulfate heptahydrate is achieved, thereby improving the color sorting accuracy of the device. The constant speed flow setting in the color sorting flow gap enables the first CCD camera 29 and the second CCD camera 30 to accurately locate the different-colored zinc sulfate heptahydrate. The setting of the spiral bristles 32 effectively ensures the surface cleanliness of the annular transparent belt 25, thereby ensuring and improving the color sorting accuracy of the device. During color sorting, the different-colored zinc sulfate heptahydrate flows out through the color sorting flow channel 36. During air sorting, the heavy particle impurities in the zinc sulfate heptahydrate are discharged through the discharge flow channel 39, and the light qualified zinc sulfate heptahydrate is discharged through the air sorting flow channel 41.

[0073] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impurity removal device for preparing zinc sulfate heptahydrate, comprising a vibration platform, characterized in that: A vibrating frame (1) is installed on the vibrating platform, and an annular screen belt (3), an annular vibrating material belt (4), a color sorting mechanism, an elevator (2) and an air selection mechanism are sequentially installed on the vibrating frame (1) along the conveying direction of zinc sulfate heptahydrate; A uniform shifting frame (5) is slidably connected to the vibration selection frame (1), a group of first material shifting plates (6) are installed on the uniform shifting frame (5) at a position above the power-operating annular screening belt (3), and a group of second material shifting plates (7) are installed on the uniform shifting frame (5) at a position above the corresponding annular vibration material belt (4); A reciprocating transmission assembly is mounted on the vibration frame (1) and drives the uniform shifting frame (5) to move reciprocally within a set stroke; A transmission module is installed on the vibrating frame (1), and the reciprocating transmission assembly, the annular screen belt (3), the annular vibrating belt (4) and the elevator (2) are all driven by the transmission module; The feed hopper (8) is installed on the vibration frame (1) and is arranged above the annular screen belt (3).

2. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 1, characterized in that: The vibration platform comprises a base frame (9), a group of damping shock absorbing parts (10) are installed between the base frame (9) and the vibration selection frame (1), and a vibration motor (11) is installed on the vibration selection frame (1).

3. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 1, characterized in that: The transmission module comprises a servo motor (12) fixed on the vibration frame (1), a group of first guide rollers (13) and a group of second guide rollers (14) rotatably connected to the vibration frame (1), and a reverse shaft (15) rotatably connected to the vibration frame (1), a group of the first guide rollers (13) are all transmission-connected to the annular vibration belt (4), a group of the second guide rollers (14) are all transmission-connected to the annular screen belt (3), the output shaft end of the servo motor (12) is fixedly connected to one of the first guide rollers (13), a reverse gear (16) is fixedly mounted on the reverse shaft (15) and one of the second guide rollers (14), the two reverse gears (16) are meshed with each other, one of the first guide rollers (13) is transmission-connected to the reverse shaft (15) via a first chain belt, and one of the second guide rollers (14) is transmission-connected to the elevator (2) via a fifth chain belt.

4. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 3, characterized in that: The annular screen belt (3) is provided with sieving holes (17) at equal intervals, the sieving holes (17) are circular holes, and the sieving holes (17) are used for filtering zinc sulfate heptahydrate. The annular screen belt (3) is arranged directly above the annular vibrating belt (4), and a waste discharge nozzle (18) is fixedly installed on the vibration frame (1) at a position corresponding to the discharge port of the annular screen belt (3). The rotation direction of the annular screen belt (3) is opposite to that of the annular vibrating belt (4).

5. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 4, characterized in that: The reciprocating transmission assembly comprises a horizontal shaft (19) and a vertical shaft (20) which are rotatably connected to the vibration frame (1); the horizontal shaft (19) is transmission-connected to the second guide roller (14) via a third chain belt; the horizontal shaft (19) and the vertical shaft (20) are both provided with linkage bevel gears, the two linkage bevel gears are meshed with each other; a missing gear (21) is provided on the vertical shaft (20); a driven toothed plate (22) is fixedly installed on the even-shifting frame (5); the missing gear (21) is transmission-connected to the driven toothed plate (22); a group of guide rods which are slidably connected to the vibration frame (1) are provided on the even-shifting frame (5); a return spring (23) is sleeved on each of the guide rods and at a position corresponding to the position between the vibration frame (1) and the even-shifting frame (5).

6. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 5, characterized in that: The moving direction of the leveling frame (5) is perpendicular to the conveying direction of the annular screen belt (3).

7. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 1, characterized in that: The color sorting mechanism comprises a color sorting frame (24) and an annular transparent belt (25), a group of adjusting push rods (26) are installed between the color sorting frame (24) and the vibration selection frame (1), a differential motor (27) is installed on the side of the color sorting frame (24), a group of third guide rollers (28) are rotatably connected to the inner wall of the color sorting frame (24), each of the third guide rollers (28) is transmission-connected to the annular transparent belt (25), an output shaft end of the differential motor (27) is fixedly connected to the third guide roller (28), a vertically arranged color sorting flow gap is provided between the annular transparent belt (25) and the annular vibration material belt (4), and a group of first CCD phases are installed on the vibration selection frame (1) and at a position corresponding to the inner side of the annular vibration material belt (4). A machine (29), a group of second CCD cameras (30) are installed on the vibration selection frame (1) and at a position corresponding to the position below the color selection flow slot, the collection ends of the first CCD camera (29) and the second CCD camera (30) are both directly opposite to the color selection flow slot, a jet diversion component is provided on the vibration selection frame (1) and at a position corresponding to the position below the second CCD camera (30), the inner wall of the color selection frame (24) is rotatably connected to two brush shafts (31), the two brush shafts (31) are fixedly mounted with spiral bristles (32), the two spiral bristles (32) are both in contact with the annular transparent belt (25), a fourth chain belt is transmission-connected to one of the third guide rollers (28), and the two brush shafts (31) are transmission-connected to the fourth chain belt.

8. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 7, characterized in that: The annular transparent belt (25) and the annular vibration material belt (4) are both made of transparent materials.

9. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 7, characterized in that: The jet flow splitter assembly comprises an air storage tank (33) connected to the vibration selection frame (1); the air outlet end of the air storage tank (33) is connected to an air jet pipe (34); the air jet pipe (34) is connected to a group of jet heads; each jet head is provided with an electromagnetic valve at the connection point with the jet pipe (34); a single chip microcomputer (35) is installed on the feed hopper (8); the first CCD camera (29), the second CCD camera (30) and the electromagnetic valve are electrically connected to the single chip microcomputer (35); a color selection flow channel (36) and a discharge flow channel (37) are respectively provided inside the color selection frame (24) and at a position corresponding to the position below the jet head; the discharge flow channel (37) is connected to the elevator (2).

10. The impurity removal device for preparing zinc sulfate heptahydrate according to claim 1, characterized in that: The air separation mechanism comprises an air separation box (38) fixedly connected to the vibration frame (1), a material discharge channel (39) is provided on the air separation box (38), a material discharge port of the elevator (2) is connected to the material discharge channel (39), a blower (40) is connected to the air separation box (38) and faces the material discharge channel (39), an air separation channel (41) cooperating with the blower (40) is provided inside the air separation box (38), and the bottom ends of the material discharge channel (39) and the air separation channel (41) are both open.

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