Energy-efficient magnesium sulfate heptahydrate crystallization tank

Abstract

The utility model relates to the technical fields of chemical equipment especially is concerned with a kind of high -efficient energy -conserving magnesium sulfate heptahydrate crystallization tank, it is cooled by subsection to tank body, adapt to the cooling operation of different material quantity, improve heat exchange efficiency and reduce the waste of energy, by discharging device, crystallization extrusion equipment is extruded, by scraping device, the crystallization remaining on inner wall is scraped, reduce the residue of crystallization, improve the practicability of device;Including cooling device, discharging device and scraping device, discharging device is installed on cooling device, and scraping device is installed on discharging device.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical equipment, and in particular to a high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizer. Background Technology

[0002] Magnesium sulfate heptahydrate, also known as thiopicrosite, bitter salt, esperidin salt, or Epsom salt, is a white or colorless needle-like or oblique columnar crystal, odorless, cool, and slightly bitter. It decomposes upon heating, gradually losing its water of crystallization to become anhydrous magnesium sulfate. It is mainly used in the manufacture of fertilizers, leather, printing and dyeing, catalysts, papermaking, plastics, ceramics, pigments, matches, explosives, and fireproof materials. It can be used in the printing and dyeing of fine cotton fabrics and silk, as a weighting agent for cotton fibers, and as a filler in kapok products. In medicine, it is used as Epsom salt. In industrial production, it requires sulfuric acid neutralization, cooling crystallization, and drying processes, with the cooling crystallization process typically carried out in a crystallization tank.

[0003] The existing Chinese utility model patent with application number CN202220719800.9 relates to a magnesium sulfate heptahydrate crystallizing kettle, which includes a crystallizing kettle body, a feed pipe, a discharge pipe, a fixed frame, support legs and a cooling mechanism, etc. It can stir and clear the material blocked inside the discharge pipe, and the position of the soft auger can be adjusted according to the actual use, which is highly flexible.

[0004] However, in actual use, the above-mentioned device is difficult to scrape off the crystals remaining on the inner wall. At the same time, the device adopts an overall cooling and heat exchange scheme. When the material is not fully filled into the tank, the heat dissipation at the top is ineffective and wastes energy. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizer that can adapt to cooling operations with different material quantities by segmenting the tank body, improving heat exchange efficiency and reducing energy waste, extruding the crystallizer through the discharge device, and scraping the residual crystals on the inner wall through the scraping device to reduce crystal residue and improve the practicality of the device.

[0006] This utility model discloses a high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizing tank, comprising a cooling device, a discharging device, and a scraping device. The discharging device is installed on the cooling device, and the scraping device is installed on the discharging device. By segmenting the tank body for cooling, it can adapt to cooling operations with different material quantities, improve heat exchange efficiency, and reduce energy waste. The crystals are extruded from the equipment through the discharging device, and the residual crystals on the inner wall are scraped off by the scraping device, reducing crystal residue and improving the practicality of the device.

[0007] Preferably, the cooling device includes a crystallizing tank, an annular frame, an annular tray frame, spiral heat exchange tubes, and water solenoid valves. Multiple sets of annular frames are evenly installed on the side of the crystallizing tank, and an annular tray frame covers the bottom of the crystallizing tank. Spiral heat exchange tubes are installed in each of the multiple sets of annular frames and the annular tray frame. Inlet and outlet water ports are provided on the sides of the annular tray frame and the annular frame, and a set of water solenoid valves is installed on each of the inlet and outlet water ports. According to the amount and height of the material in the crystallizing tank, the water solenoid valves on the annular tray frame and the annular frame below the corresponding height are opened, thereby dissipating heat to the part with material, reducing ineffective heat dissipation, and improving the practicality of the device.

[0008] Preferably, the device also includes a reducer, a motor, a drive shaft, and stirring arms. A reducer is installed on the upper surface of the crystallization tank, and a motor is installed on the reducer. The output end of the reducer extends through the upper surface of the crystallization tank into the interior of the crystallization tank and connects to the drive shaft. Multiple stirring arms are provided on the side of the drive shaft. When the motor is turned on, the power is transmitted to the drive shaft through the reducer, which drives the drive shaft and the stirring arms on the side of the drive shaft to rotate, thereby uniformly mixing the material in the crystallization tank and improving the practicality of the device.

[0009] Preferably, the discharge device includes a discharge hopper, spiral blades, and a plate-type solenoid valve. The discharge hopper is located at the bottom of the crystallization tank. Spiral blades are connected to the lower end face of the drive shaft. The bottom of the spiral blades extends into the lower part of the discharge hopper and is connected and fixed to the bracket via bearings. A plate-type solenoid valve is installed on the discharge port of the discharge hopper. The opening and closing of the discharge port of the discharge hopper is controlled by the plate-type solenoid valve. The heat exchange efficiency is increased by the contraction of the bottom of the discharge hopper in conjunction with the bearing connecting seat, thereby accelerating the crystallization speed of the material at the bottom. The material is discharged by the spiral blades rotating with the drive shaft, which improves the practicality of the device.

[0010] Preferably, the scraping device includes a bearing connecting seat, a connecting shaft, and a main scraper. The outer edge of the stirring arm is connected to the connecting shaft through the bearing connecting seat, and the main scraper is connected to the side of the connecting shaft. The bearing connecting seat and the connecting shaft enable the main scraper to rotate with the connecting shaft, and the main scraper completes the scraping operation on the inner wall of the crystallizer, thus improving the adaptability of the device.

[0011] Preferably, the device also includes a wear-resistant scraper and bolts, with bolts installed on the edge of the main scraper via the wear-resistant scraper. The bolts scrape away the crystals on the inner wall of the crystallizer, reducing wear on the main scraper body, facilitating maintenance and replacement, and improving the practicality of the device.

[0012] Preferably, the device also includes a limiting baffle and a V-shaped frame. A limiting baffle is provided in the middle of multiple sets of V-shaped frames on the same side, and a V-shaped frame is provided in the middle of the side of the connecting shaft. The limiting baffle can intercept and limit the rotation of the V-shaped frame. By controlling the output direction of the motor to change the rotation direction of the stirring arm, when rotating clockwise, the V-shaped frame and the limiting baffle limit the main scraper to prevent it from contacting the inner wall of the crystallizer. When rotating counterclockwise, the limiting baffle limits and intercepts the other end of the V-shaped frame, so that the bolt on the main scraper contacts the inner wall of the crystallizer, thus completing the scraping of the crystals on the inner wall of the crystallizer and improving the practicality of the device.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by cooling the tank in sections, it can adapt to cooling operations with different material quantities, improve heat exchange efficiency and reduce energy waste, extrude the crystallizer through the discharge device, and scrape off the residual crystals on the inner wall through the scraping device, thereby reducing crystal residue and improving the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model; Figure 2 This is a first cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the second cross-sectional structure of this utility model; Figure 4 This is a partially enlarged structural schematic diagram of the present invention; The following are labels in the attached diagram: 1. Crystallizer; 2. Annular frame; 3. Annular tray frame; 4. Spiral heat exchange tube; 5. Water solenoid valve; 6. Reducer; 7. Motor; 8. Drive shaft; 9. Stirring arm; 10. Discharge hopper; 11. Spiral blade; 12. Plate solenoid valve; 13. Bearing connecting seat; 14. Connecting shaft; 15. Main scraper; 16. Wear-resistant scraper; 17. Bolt; 18. Limiting baffle; 19. V-shaped frame. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0016] Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the discharge device is installed on the cooling device, and the scraping device is installed on the discharge device; First, based on the amount and height of material in the crystallizer 1, open the corresponding water solenoid valves 5 on the annular tray frame 3 and the annular frame 2 below the corresponding height to dissipate heat to the part containing material. Then, turn on the motor 7 to transmit power to the drive shaft 8 through the reducer 6, causing the drive shaft 8 and the stirring arm 9 on the side of the drive shaft 8 to rotate, thereby uniformly mixing the material in the crystallizer 1. After the crystallization process is completed, open the plate solenoid valve 12 and control the motor 7 to reverse, thereby driving the spiral blade 11 to output the crystals downward. At the same time, the limit baffle 18 limits and intercepts the other end of the V-shaped frame 19, so that the bolt 17 on the main scraper 15 contacts the inner wall of the crystallizer 1, completing the scraping of the crystals on the inner wall of the crystallizer 1. The cooling device includes a crystallization tank 1, an annular frame 2, an annular tray frame 3, a spiral heat exchange tube 4, and a water circuit solenoid valve 5. Multiple sets of annular frames 2 are evenly installed on the side of the crystallization tank 1, and an annular tray frame 3 covers the bottom of the crystallization tank 1. Spiral heat exchange tubes 4 are installed in the multiple sets of annular frames 2 and annular tray frames 3. Inlet and outlet water ports are provided on the side of the annular tray frame 3 and annular frame 2, and a set of water circuit solenoid valves 5 are installed on the inlet and outlet water ports respectively. It also includes a reducer 6, a motor 7, a drive shaft 8 and a stirring arm 9. The reducer 6 is installed on the upper end face of the crystallization tank 1, and the motor 7 is installed on the reducer 6. The output end of the reducer 6 extends through the upper end face of the crystallization tank 1 into the interior of the crystallization tank 1 and is connected to the drive shaft 8. Multiple stirring arms 9 are provided on the side of the drive shaft 8. The discharge device includes a discharge hopper 10, a spiral blade 11 and a plate solenoid valve 12. The discharge hopper 10 is provided at the bottom of the crystallization tank 1. The spiral blade 11 is connected to the lower end face of the drive shaft 8. The bottom of the spiral blade 11 extends into the lower part of the discharge hopper 10 and is connected and fixed to the bracket by bearings. The plate solenoid valve 12 is installed on the discharge port of the discharge hopper 10. The scraping device includes a bearing connecting seat 13, a connecting shaft 14 and a main scraper 15. The outer edge of the stirring arm 9 is connected to the connecting shaft 14 through the bearing connecting seat 13, and the main scraper 15 is connected to the side of the connecting shaft 14. It also includes a wear-resistant scraper 16 and bolts 17, with bolts 17 installed on the edge of the main scraper 15 via the wear-resistant scraper 16; It also includes a limiting baffle 18 and a V-shaped frame 19. A limiting baffle 18 is provided in the middle of multiple sets of V-shaped frames 19 on the same side, and a V-shaped frame 19 is provided in the middle of the side of the connecting shaft 14. The limiting baffle 18 can intercept and limit the rotation of the V-shaped frame 19. By cooling the tank in sections, it can adapt to the cooling operation of different material amounts, improve heat exchange efficiency and reduce energy waste. The crystallizer is extruded through the discharge device, and the residual crystals on the inner wall are scraped off by the scraping device to reduce the residue of crystals and improve the practicality of the device.

[0017] like Figures 1 to 4 As shown, this utility model discloses a high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizer. During operation, the annular tray frame 3 and the water solenoid valve 5 on the annular frame 2 below the corresponding height are opened according to the amount and height of the material in the crystallizer 1, thereby dissipating heat for the part containing material. Then, the motor 7 is turned on and the power is transmitted to the drive shaft 8 through the reducer 6, which drives the drive shaft 8 and the stirring arm 9 on the side of the drive shaft 8 to rotate, thereby uniformly mixing the material in the crystallizer 1. After the crystallization process is completed, the plate solenoid valve 12 is opened and the motor 7 is controlled to reverse, thereby driving the spiral blade 11 to output the crystals downward. At the same time, the limiting baffle 18 limits and intercepts the other end of the V-shaped frame 19, so that the bolt 17 on the main scraper 15 contacts the inner wall of the crystallizer 1, thereby completing the scraping of the crystals on the inner wall of the crystallizer 1.

[0018] The reducer 6, motor 7, water circuit solenoid valve 5, and plate solenoid valve 12 of this utility model's high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizer are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0019] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizing tank; characterized in that, The device includes a cooling device, a discharge device, and a scraping device. The discharge device is installed on the cooling device, and the scraping device is installed on the discharge device. The cooling device includes a crystallizer (1), an annular frame (2), an annular tray frame (3), a spiral heat exchange tube (4), and a water solenoid valve (5). Multiple sets of annular frames (2) are evenly installed on the side of the crystallizer (1). The bottom of the crystallizer (1) is covered with an annular tray frame (3). Spiral heat exchange tubes (4) are provided in the multiple sets of annular frames (2) and the annular tray frame (3). Inlet and outlet water ports are provided on the side of the annular tray frame (3) and the annular frame (2). A set of water solenoid valves (5) is installed on the inlet and outlet water ports respectively. The scraping device includes a bearing connecting seat (13), a connecting shaft (14), and a main scraper (15). The outer edge of the stirring arm (9) is connected to the connecting shaft (14) through the bearing connecting seat (13). The main scraper (15) is connected to the side of the connecting shaft (14).

2. The high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizer as described in claim 1, characterized in that, It also includes a reducer (6), a motor (7), a drive shaft (8) and a stirring arm (9). A reducer (6) is installed on the upper surface of the crystallizer (1). A motor (7) is installed on the reducer (6). The output end of the reducer (6) extends through the upper surface of the crystallizer (1) and into the interior of the crystallizer (1) to connect with the drive shaft (8). Multiple stirring arms (9) are provided on the side of the drive shaft (8).

3. The high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizer as described in claim 2, characterized in that, The discharge device includes a discharge hopper (10), a spiral blade (11) and a plate solenoid valve (12). The discharge hopper (10) is located at the bottom of the crystallization tank (1). The spiral blade (11) is connected to the lower end face of the drive shaft (8). The bottom of the spiral blade (11) extends to the lower part of the discharge hopper (10) and is connected and fixed to the bracket by bearings. The plate solenoid valve (12) is installed on the discharge port of the discharge hopper (10).

4. The high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizer as described in claim 3, characterized in that, It also includes wear-resistant scrapers (16) and bolts (17), with the edge of the main scraper (15) being bolted (17) via the wear-resistant scraper (16).

5. The high-efficiency and energy-saving magnesium sulfate heptahydrate crystallizer as described in claim 4, characterized in that, It also includes a limiting baffle (18) and a V-shaped frame (19). A limiting baffle (18) is provided in the middle of multiple sets of V-shaped frames (19) on the same side. A V-shaped frame (19) is provided in the middle of the side of the connecting shaft (14). The limiting baffle (18) can intercept and limit the rotation of the V-shaped frame (19).

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