Electroplating sludge low-temperature drying device

Abstract

The electroplating sludge low-temperature drying device comprises a drying box, a heating cavity is formed in the inner side wall of the drying box, a heat insulation cavity is formed in the inner side wall of the drying cavity and located on the outer side of the heating cavity, a feeding pipe is installed on one side of the drying box, and a discharging pipe is installed at the other end of the drying box. A heating assembly in the heating cavity can conduct low-temperature drying on sludge in the drying box, a heat insulation assembly in the heat insulation cavity can conduct heat insulation protection on the drying box, it is avoided that the temperature in equipment passes through the outer side wall of the drying box and scalds personnel, and the problems that the sludge is inconvenient to stir and turn over, the sludge heating and drying degree is prone to being uneven, and the drying efficiency is high are solved. The problems that existing equipment is poor in heat insulation and protection effect, people are prone to being scalded when touching the equipment by mistake, and the practicability and safety of the equipment for drying the sludge are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating sludge, in particular to a low-temperature drying device for electroplating sludge. Background Technique

[0002] Electroplating sludge refers to the precipitate mainly composed of heavy metal hydroxides such as copper and chromium generated during the treatment of electroplating wastewater. The components are complex. Due to the large amount of electroplating wastewater, complex components, high COD, and high heavy metal content, if discharged arbitrarily without treatment, it will cause serious environmental pollution. At the same time of treating electroplating wastewater, a large amount of electroplating sludge will be formed. Before treating the electroplating sludge, the sludge can be dried first to reduce the moisture content of the electroplating sludge, which can greatly reduce the weight of the electroplating sludge and is beneficial to the subsequent treatment of the electroplating sludge. However, the existing equipment has poor stirring effect when drying the sludge, resulting in low drying efficiency of the sludge.

[0003] When the existing equipment dries the sludge, it is not convenient to stir and turn the sludge, which easily leads to uneven heat drying of the sludge. And it is not convenient to push and export the sludge after drying. The existing equipment has poor heat insulation and protection effect, and it is easy for personnel to get scalded when accidentally touching the equipment, which affects the practicability and safety of the equipment for drying the sludge. Therefore, the technical personnel in the field provide a low-temperature drying device for electroplating sludge to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide a low-temperature drying device for electroplating sludge to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A low-temperature drying device for electroplating sludge, including a drying box, a heating cavity is opened on the inner side wall of the drying box, a heat insulation cavity is opened on the inner side wall of the drying cavity and outside the heating cavity, a feeding pipe is installed on one side of the drying box, and a discharging pipe is installed at the other end of the drying box;

[0006] A heating component is installed inside the heating cavity, a heat insulation component for preventing scalding is installed inside the heat insulation cavity, and a stirring component is installed inside the drying box.

[0007] Preferably: The heating component includes a heat conduction mesh plate sleeved on the outer side wall of the heating cavity, a liquid inlet pipe is installed at one end of the heating cavity close to the top, a liquid discharge pipe is installed at the other end of the heating cavity and close to the bottom, a heating pipe is installed inside the heating cavity, the heating pipe is spiral, and the heating pipe is located outside the heat conduction mesh plate.

[0008] Preferably, the stirring assembly includes a rotating shaft penetrating through the inner side of the drying box. A motor is connected to one end of the rotating shaft on one side of the drying box. A pushing plate is sleeved on the outer side of the rotating shaft. A plurality of fixing rods arranged in a circular pattern penetrate through the outer side of the pushing plate. The pushing plate is spiral-shaped.

[0009] Preferably, the heat insulation assembly includes a heat insulation plate sleeved on the inner side wall of the heat insulation cavity. An adiabatic pad is sleeved on the outer side of the heat insulation plate. A packing cavity is formed on the inner side of the adiabatic pad. The packing cavity is filled with heat insulation material.

[0010] Preferably, a plurality of stirring rods arranged evenly are installed on the outer side of the fixing rod. The cross section of the stirring rod is T-shaped.

[0011] Preferably, four scraping plates arranged in a circular pattern are installed on the outer side of the pushing plate. A plurality of evenly arranged notches are formed on one side of the scraping plate. The scraping plate is arc-shaped.

[0012] Preferably, a plurality of evenly arranged heat insulation grooves are formed on the inner side of the heat insulation plate. The cross section of the heat insulation groove is trapezoidal.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, by providing a heating cavity and a heat insulation cavity, the heating assembly in the heating cavity can perform low-temperature drying on the sludge in the drying box. The heat insulation assembly in the heat insulation cavity can provide heat insulation protection for the drying box, preventing the temperature inside the equipment from scalding personnel through the outer side wall of the drying box, improving the safety of the drying box. The stirring assembly can stir and turn the sludge, so that the sludge fits against the inner side wall of the drying box, improving the uniformity and efficiency of sludge drying.

[0015] 2. In the present utility model, by providing a heat conduction mesh plate and heating tubes, the aqueous solution enters the heating cavity through the liquid inlet pipe. The heating tubes are spiral-shaped, which can increase the contact area between the heating tubes and the aqueous solution, enabling the heating tubes to fully heat the aqueous solution in the heating cavity. The hot water performs low-temperature drying on the sludge in the drying box through heat transfer. The heat conduction mesh plate can conduct the heat of the heating tubes to the inner side wall of the drying box, so that the heat evenly dries the sludge, improving the efficiency and uniformity of the equipment in drying the sludge.

[0016] 3. In the present utility model, by providing a rotating shaft, a pushing plate and fixing rods, the motor can drive the rotating shaft to rotate. The rotating shaft can drive the pushing plate to rotate in the drying box. The pushing plate can drive the fixing rods to stir and turn the sludge, so that the sludge is fully dried. The pushing plate can push the sludge, enabling the dried sludge to be discharged from the drying box through the discharge pipe, improving the efficiency of the equipment in drying the sludge. Description of the Drawings

[0017] Figure 1 This is a left - view sectional three - dimensional view of the overall structure of the present utility model;

[0018] Figure 2 This is a schematic view of the overall structure of the present utility model;

[0019] Figure 3 This is the Figure 1 enlarged view of part A in the overall structure of the present utility model;

[0020] Figure 4 This is a schematic view of the structure of the rotating shaft, pushing plate, fixed rod, stirring rod, scraping plate and notch in the overall structure of the present utility model.

[0021] In the figure: 1. drying box; 2. heating chamber; 3. heat - insulating chamber; 4. feeding pipe; 5. discharging pipe; 6. heat - conducting mesh plate; 7. liquid inlet pipe; 8. liquid discharging pipe; 9. heating pipe; 10. rotating shaft; 11. motor; 12. pushing plate; 13. fixed rod; 14. heat - insulating plate; 15. heat - insulating gasket; 16. stirring rod; 17. scraping plate; 18. notch; 19. heat - insulating groove; 151. stuffing cavity. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 3 , in the embodiment of the present utility model, an electroplating sludge low - temperature drying device includes a drying box 1. A heating chamber 2 is provided on the inner side wall of the drying box 1. A heat - insulating chamber 3 is provided on the inner side wall of the drying chamber and outside the heating chamber 2. A feeding pipe 4 is installed on one side of the drying box 1. A discharging pipe 5 is installed at the other end of the drying box 1. A heating component is installed inside the heating chamber 2. A heat - insulating component for preventing scalding is installed inside the heat - insulating chamber 3. A stirring component is installed inside the drying box 1.

[0024] During use, the heating component in the heating chamber 2 can perform low - temperature drying on the sludge in the drying box 1. The heat - insulating component in the heat - insulating chamber 3 can provide heat - insulating protection for the drying box 1, avoiding the temperature inside the device from scalding personnel through the outer wall of the drying box 1, improving the safety of the drying box 1. The stirring component can stir and turn the sludge, so that the sludge fits against the inner side wall of the drying box 1, improving the uniformity and efficiency of sludge drying.

[0025] In one embodiment, specifically, the heating component includes a heat conduction mesh plate 6 sleeved on the outer side wall of the heating chamber 2. A liquid inlet pipe 7 is installed near the top at one end of the heating chamber 2, and a liquid discharge pipe 8 is installed near the bottom at the other end of the heating chamber 2. A heating pipe 9 is installed inside the heating chamber 2. The heating pipe 9 is spiral-shaped and is located outside the heat conduction mesh plate 6.

[0026] Among them, the aqueous solution enters the heating chamber 2 through the liquid inlet pipe 7. The spiral shape of the heating pipe 9 can increase the contact area between the heating pipe 9 and the aqueous solution, enabling the heating pipe 9 to fully heat the aqueous solution in the heating chamber 2. The hot water conducts heat to the sludge in the drying box 1 through heat transfer for low-temperature drying. The heat conduction mesh plate 6 can conduct the heat of the heating pipe 9 to the inner side wall of the drying box 1, so that the heat evenly dries the sludge, improving the efficiency and uniformity of the equipment for drying the sludge.

[0027] Furthermore, the stirring component includes a rotating shaft 10 penetrating through the inside of the drying box 1. A motor 11 is connected to one end of the rotating shaft 10 on one side of the drying box 1. A pushing plate 12 is sleeved on the outside of the rotating shaft 10. A plurality of fixing rods 13 arranged in a circle penetrate through the outside of the pushing plate 12. A plurality of stirring rods 16 arranged evenly are installed on the outside of the fixing rods 13. Four scraping plates 17 arranged in a circle are installed on the outside of the pushing plate 12. A plurality of notches 18 arranged evenly are formed on one side of the scraping plate 17. The scraping plate 17 is arc-shaped. The cross-section of the stirring rod 16 is T-shaped, and the pushing plate 12 is spiral-shaped.

[0028] In one embodiment, specifically, the motor 11 can drive the rotating shaft 10 to rotate. The rotating shaft 10 can drive the pushing plate 12 to rotate inside the drying box 1. The pushing plate 12 can drive the fixing rods 13 to stir and turn the sludge. At the same time, the fixing rods 13 can drive a plurality of stirring rods 16 to rotate, so as to fully dry the sludge. The pushing plate 12 can push the sludge. The pushing plate 12 can drive a plurality of scraping plates 17 to scrape the sludge. The plurality of notches 18 at the bottom of the scraping plate 17 can facilitate the sludge to pass through the scraping plate 17, so that the dried sludge can be exported from the drying box 1 through the discharge pipe 5, improving the efficiency of the equipment for drying the sludge.

[0029] Among them, the heat insulation component includes a heat insulation plate 14 sleeved on the inner side wall of the heat insulation chamber 3. An adiabatic pad 15 is sleeved on the outside of the heat insulation plate 14. A packing cavity 151 is formed inside the adiabatic pad 15. A plurality of heat insulation grooves 19 arranged evenly are formed inside the heat insulation plate 14. The cross-section of the heat insulation groove 19 is trapezoidal, and the packing cavity 151 is filled with heat insulation materials.

[0030] Furthermore, the heat insulation groove 19 can increase the heat insulation area of the heat insulation plate 14, the heat insulation material in the packing cavity 151 can enhance the heat insulation effect of the heat insulation pad 15, and the heat insulation pad 15 and the heat insulation plate 14 can insulate and keep warm the temperature inside the drying box 1, preventing the outer sidewall temperature of the drying box 1 from being too high to scald people and improving the safety of the equipment for drying sludge.

[0031] The working principle of the present utility model:

[0032] First, the sludge is injected into the drying box 1 through the feeding pipe 4. Then, the aqueous solution enters the heating cavity 2 through the liquid inlet pipe 7. Next, the heating pipe 9 fully heats the aqueous solution in the heating cavity 2, and the hot water conducts heat to the sludge in the drying box 1 for low-temperature drying through heat transfer. At the same time, the heat conduction mesh plate 6 conducts the heat of the heating pipe 9 to the inner sidewall of the drying box 1. Then, the motor 11 is started to drive the rotating shaft 10 to rotate. At this time, the rotating shaft 10 drives the pushing plate 12 to rotate in the drying box 1. At this time, the pushing plate 12 drives the fixed rod 13 to rotate, and at the same time, the fixed rod 13 drives a plurality of stirring rods 16 to stir and turn the sludge. Then, the heat of the aqueous solution dries the sludge in the drying box 1. Then, the rotating shaft 10 drives the pushing plate 12 to push the sludge, and at the same time, the pushing plate 12 drives a plurality of scraping plates 17 to scrape the sludge. Then, the dried sludge is discharged from the drying box 1 through the discharge pipe 5. The heat insulation pad 15 and the heat insulation plate 14 insulate and keep warm the temperature inside the drying box 1, preventing the outer sidewall temperature of the drying box 1 from being too high to scald people.

[0033] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A low-temperature drying device for electroplating sludge, comprising a drying box (1), characterized in that: The inner wall of the drying box (1) is provided with a heating chamber (2), the inner wall of the drying box and located outside the heating chamber (2) is provided with a heat insulation chamber (3), a feeding pipe (4) is installed on one side of the drying box (1), and a discharging pipe (5) is installed on the other end of the drying box (1); A heating component is installed inside the heating chamber (2), a heat insulation component for preventing scalding is installed inside the heat insulation chamber (3), and a stirring component is installed inside the drying box (1).

2. The electroplating sludge low-temperature drying device according to claim 1, characterized in that: The heating assembly comprises a heat-conducting mesh plate (6) sleeved on the outer wall of the heating chamber (2); a liquid inlet pipe (7) is installed at one end of the heating chamber (2) near the top; a liquid discharge pipe (8) is installed at the other end of the heating chamber (2) near the bottom; a heating tube (9) is installed inside the heating chamber (2); the heating tube (9) is spiral-shaped and is located outside the heat-conducting mesh plate (6).

3. The electroplating sludge low-temperature drying device according to claim 2, characterized in that: The stirring assembly comprises a rotating shaft (10) passing through the inner side of the drying box (1); a motor (11) is connected to one end of the rotating shaft (10) on one side of the drying box (1); a push plate (12) is mounted on the outer side of the rotating shaft (10); a plurality of circumferentially arranged fixing rods (13) pass through the outer side of the push plate (12); and the push plate (12) is spiral-shaped.

4. The electroplating sludge low-temperature drying device according to claim 2, characterized in that: The heat insulation component comprises a heat insulation plate (14) mounted on the inner wall of the heat insulation cavity (3); a heat insulation pad (15) is mounted on the outer side of the heat insulation plate (14); a filling cavity (151) is provided on the inner side of the heat insulation pad (15); and the inner side of the filling cavity (151) is filled with heat insulation material.

5. The electroplating sludge low-temperature drying device according to claim 3, characterized in that: A plurality of stirring rods (16) arranged evenly are installed on the outside of the fixed rod (13), and the cross section of the stirring rod (16) is T-shaped.

6. The electroplating sludge low-temperature drying device according to claim 3, characterized in that: Four scraper plates (17) arranged in a circumference are installed on the outer side of the push plate (12); a plurality of evenly arranged notches (18) are opened on one side of the scraper plate (17); and the scraper plate (17) is arc-shaped.

7. The electroplating sludge low-temperature drying device according to claim 4, characterized in that: A plurality of evenly arranged heat insulation grooves (19) are provided on the inner side of the heat insulation plate (14), and the cross section of the heat insulation grooves (19) is trapezoidal.

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