High-efficiency energy-saving polishing powder multi-stage drying equipment

Abstract

The application relates to the polishing powder processing technical field and discloses a high-efficiency energy-saving polishing powder multistage drying equipment which comprises a drying tank, a drying box located at one side of the drying tank, a water-gas heat exchange mechanism installed at one side of the lower end of the drying tank, an inhaling pump connected to the inside of a tank cover at the upper end of the drying tank, a moving material distributing mechanism connected to the output end of the inhaling pump through a feeding pipe, and a plurality of material distributing screen assemblies uniformly arranged in the inside of the drying box. The polishing powder is dispersed, and polishing powder with a specified particle size is thrown into an inner cylinder shell; the polishing powder screened in the inner cylinder shell is dried by hot air through the water-gas heat exchange mechanism; the polishing powder is preliminarily air-dried and dehydrated during rotation, so that the dehydration efficiency is greatly improved; the polishing powder preliminarily air-dried and dehydrated can be uniformly arranged on the material screen through the moving material distributing mechanism, and the polishing powder is dried again in a low-temperature environment; and the drying effect is good.

Description

Technical Field

[0001] This application relates to the field of polishing powder processing technology, specifically to a high-efficiency and energy-saving multi-stage drying equipment for polishing powder. Background Technology

[0002] After the fluorination reaction, unreacted hydrofluoric acid or fluorides will adhere to the surface of the polishing powder. The drying process decomposes or volatilizes these residues by heating, thus preventing damage to the crystal structure or pollution of the environment in subsequent grinding, calcination and other processes. At the same time, a humid environment may cause the polishing powder to absorb water and swell, which will damage the particle shape and affect the particle size distribution and polishing accuracy. Drying can ensure that the particles maintain a stable shape and ensure the uniformity of subsequent processing.

[0003] Chinese patent discloses a dehumidification and drying device for polishing powder raw materials (publication number CN222048471U). The patent technology includes a fan, a heating box fixedly connected to the front end of the fan, a sliding frame slidably installed at the rear of the fan, a guide frame fixedly connected to the inner end of the fan, the guide frame sliding through the sliding frame, a sliding rheostat fixedly connected to the upper end of the guide frame, and a sliding knob of the rheostat fixedly connected to the sliding frame. When the sliding frame is released, the guide frame connects to the working power supply of the heating box. When the pipeline between the heating box and the material tank is blocked, the airflow into the heating box decreases. The sliding frame pulls the sliding knob of the rheostat backward to increase the resistance and reduce the power of the heating box. When the airflow is too weak to overcome the elasticity of the filter screen, the guide frame presses the power-off switch to disconnect the working power supply of the heating box, thus preventing the heating box from overheating and burning out. However, its drying efficiency is poor, the drying effect is not good, and the polishing powder cannot be sieved during the drying process, which may lead to uneven drying. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency and energy-saving multi-stage drying equipment for polishing powder, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-efficiency, energy-saving multi-stage drying equipment for polishing powder includes a drying tank and a drying chamber located on one side of the drying tank. The upper end of the drying tank is fitted with a tank cover, and the front of the drying chamber is rotatably connected to a door. A water-air heat exchange mechanism is installed on one side of the lower end of the drying tank, and a suction pump is connected to the inner side of the tank cover at the upper end of the drying tank. The output end of the suction pump is connected to a moving material distribution mechanism via a feed pipe. Several material distribution screen assemblies are evenly arranged inside the drying chamber. The drying tank includes the drying tank itself. The drying tank shell contains an inner cylinder shell, inside which a sieve cylinder is installed. A suction pipe is installed through the inner side of the sieve cylinder. The lower end of the suction pipe is located between the sieve cylinder and the inner cylinder shell and is connected to a suction funnel. An air pipe is fixedly connected through the lower end of the inner cylinder shell. An air outlet plate is provided at the bottom of the inner side of the inner cylinder shell at the upper end of the air pipe. An air pipe is rotatably connected to the lower end of the air pipe through a rotary joint. A motor is installed on the outer side of the air pipe through a pulley assembly.

[0007] As a further embodiment of this utility model: the moving fabric mechanism includes a vertical lead screw assembly located above and a horizontal lead screw assembly located below; both the vertical and horizontal lead screw assemblies include a ball screw and a guide rod arranged parallel to the ball screw. A fixing frame is provided on the outer side of the ball screw and the guide rod, and a lead screw motor is fixedly installed on the fixing frame at one end of the ball screw. A nut pair is engaged with the ball screw, and a guide sleeve is slidably connected to the guide rod. The lower ends of the guide rod and the guide sleeve on the vertical lead screw assembly are connected to the fixing frame on the horizontal lead screw assembly. The lower ends of the guide rod and the guide sleeve on the horizontal lead screw assembly are connected to a connecting rod. The front side of the lower end of the connecting rod is connected to a fabric inlet. A flexible hose is fixedly connected to the upper end of the fabric inlet, and one end of each flexible hose is connected to the main material pipe through a solenoid valve.

[0008] As a further embodiment of this utility model: the water-air heat exchange mechanism includes a heat exchange tank shell and a heat exchange tank cover that cooperates with the heat exchange tank shell. A heat exchange air pipe is installed inside the heat exchange tank shell. A cold air inlet is provided at one end of the heat exchange tank cover, and a hot air outlet is provided at one end of the heat exchange tank shell away from the heat exchange tank cover.

[0009] As a further improvement of this utility model: a hot water inlet is provided at the lower end of the outer side of the heat exchange tank shell, and a warm water outlet is provided at the upper end of the outer side of the heat exchange tank shell; the hot air outlet is connected to the air pipe.

[0010] As a further improvement of this utility model: a feeding port is provided on one side of the upper end of the can lid, and an exhaust port is provided on the other side of the upper end of the can lid.

[0011] As a further embodiment of this utility model: the fabric sieve assembly includes a fixed frame fixed inside the drying chamber and a material sieve slidably disposed on the fixed frame. The inner side of the fixed frame is provided with a heating wire, and a set of slide rails are provided on both sides of the upper end of the fixed frame. The lower end of the material sieve is provided with a set of slide grooves that match the slide rails.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes a motor and pulley assembly within the drying tank to centrifuge the polishing powder contained in the sieve cylinder, dispersing the powder and allowing powder of a specified particle size to be thrown into the inner cylinder shell. Larger particles are retained within the sieve cylinder, and hot air is introduced into the drying tank via a water-air heat exchange mechanism. The polishing powder screened in the inner cylinder shell undergoes hot air drying, and the powder is preliminarily air-dried and dehydrated during rotation, significantly accelerating the dehydration efficiency. A moving material distribution mechanism evenly distributes the preliminarily air-dried and dehydrated polishing powder onto the sieve, and then heat is generated by heating wires to further dry the powder at a low temperature. This results in excellent drying performance and achieves high efficiency and energy saving. Attached Figure Description

[0014] Figure 1 A schematic diagram of a high-efficiency, energy-saving multi-stage drying equipment for polishing powder;

[0015] Figure 2 A cross-sectional view of the drying tank in a high-efficiency, energy-saving multi-stage drying equipment for polishing powder;

[0016] Figure 3 A schematic diagram of the exploded structure of the water-air heat exchange mechanism in a high-efficiency and energy-saving multi-stage drying equipment for polishing powder;

[0017] Figure 4 This is a schematic diagram showing the exploded structure of the material feeding screen assembly in a high-efficiency and energy-saving multi-stage drying equipment for polishing powder.

[0018] Figure 5 A partial structural diagram of the moving material feeding mechanism in a high-efficiency and energy-saving multi-stage drying equipment for polishing powder;

[0019] Figure 6 for Figure 5 A magnified structural diagram of part A in the middle.

[0020] In the diagram: 1. Tank lid; 2. Water-air heat exchange mechanism; 21. Heat exchange tank shell; 22. Hot water inlet; 23. Hot air outlet; 24. Warm water outlet; 25. Heat exchange air pipe; 26. Cold air inlet; 27. Heat exchange tank lid; 3. Drying tank; 31. Drying tank shell; 32. Screen cylinder; 33. Suction pipe; 34. Inner cylinder shell; 35. Air outlet plate; 36. Air pipe one; 37. Rotary joint; 38. Air pipe two; 39. Pulley assembly; 310. Motor one; 311. Suction horn; 4. Feed port; 5. Suction pump; 6. Exhaust port; 7. Feed pipe; 8. Drying chamber; 9. Fabric screen assembly; 91. Fixed frame; 92. Heating wire; 93. Slide rail; 94. Slide groove; 95. Material screen; 10. Chamber door; 11. Moving fabric feeding mechanism; 111. Main material pipe; 112. Solenoid valve; 113. Hose; 114. Guide rod; 115. Ball screw; 116. Screw motor; 117. Nut pair; 118. Guide sleeve; 119. Fixed frame; 120. Connecting rod; 121. Fabric feeding port. Detailed Implementation

[0021] Please see Figures 1-6 In this embodiment of the utility model, the high-efficiency and energy-saving multi-stage drying equipment for polishing powder includes a drying tank 3 and a drying chamber 8 located on one side of the drying tank 3. A tank cover 1 is installed on the upper end of the drying tank 3, and a door 10 is rotatably connected to the front side of the drying chamber 8. A water-air heat exchange mechanism 2 is installed on one side of the lower end of the drying tank 3, and a suction pump 5 is connected through the inner side of the tank cover 1 at the upper end of the drying tank 3. The output end of the suction pump 5 is connected to a moving material distribution mechanism 11 through a feed pipe 7. Several material distribution screen assemblies 9 are evenly arranged inside the drying chamber 8, and the moving material distribution mechanism 11 is distributed at the upper end of each material distribution screen assembly 9. A feeding port 4 is provided on one side of the upper end of the tank cover 1, and an exhaust port 6 is provided on the other side of the upper end of the tank cover 1. Wet polishing powder containing moisture can be added into the screen cylinder 32 from the feeding port 4. A large amount of water vapor generated during the drying process of the wet polishing powder can be discharged from the exhaust port 6.

[0022] like Figure 1 and Figure 2As shown, the drying tank 3 includes a drying tank shell 31, an inner cylinder shell 34 installed inside the drying tank shell 31, a screen cylinder 32 installed inside the inner cylinder shell 34, a suction pipe 33 penetrating through the inner side of the screen cylinder 32, and a shaft seal installed at the junction of the suction pipe 33 and the screen cylinder 32 to ensure that the suction pipe 33 remains fixed when the screen cylinder 32 rotates, and that there is no leakage at the junction of the suction pipe 33 and the screen cylinder 32; the lower end of the suction pipe 33 is connected to a suction bell mouth 311 between the screen cylinder 32 and the inner cylinder shell 34, and the upper end of the suction pipe 33 is connected to the output end of the suction pump 5; an air pipe 36 is fixedly connected through the lower end of the inner cylinder shell 34, and an air outlet plate 35 is provided at the bottom of the inner side of the inner cylinder shell 34 at the upper end of the air pipe 36. Furthermore, a second air pipe 38 is rotatably connected to the lower end of the first air pipe 36 via a rotary joint 37. A motor 310 is installed on the outside of the first air pipe 36 via a pulley assembly 39. The motor 310 is fixedly installed on the lower part of the inner side of the drying tank shell 31, and the second air pipe 38 is fixedly installed through the lower end of the drying tank shell 31. The motor 310 drives the pulley assembly 39 to rotate, which in turn drives the first air pipe 36 to rotate at the rotary joint 37. The first air pipe 36 drives the inner cylinder shell 34, the air outlet plate 35, and the sieve cylinder 32 to rotate together, causing the polishing powder contained in the sieve cylinder 32 to undergo centrifugal motion, dispersing the polishing powder and causing polishing powder of a specified particle size to be thrown into the inner cylinder shell 34; while large particles of polishing powder are retained in the sieve cylinder 32.

[0023] like Figure 2 and Figure 3 As shown, the water-gas heat exchange mechanism 2 includes a heat exchange tank shell 21 and a heat exchange tank cover 27 that mates with the heat exchange tank shell 21. A heat exchange gas pipe 25 is installed inside the heat exchange tank shell 21. A cold air inlet 26 is provided at one end of the heat exchange tank cover 27. A hot air outlet 23 is provided at one end of the heat exchange tank shell 21 away from the heat exchange tank cover 27. A hot water inlet 22 is provided at the lower outer side of the heat exchange tank shell 21, and a warm water outlet 24 is provided at the upper outer side of the heat exchange tank shell 21. The hot air outlet 23 is connected to a gas pipe 38. The hot water inlet 22 is connected to the hot water outlet of the boiler via a pipe, and the warm water outlet 24 is connected to the return water inlet of the boiler. Then, cold air is introduced... The inlet 26 is connected to an external induced draft fan; the boiler sends hot water from the hot water inlet 22 into the gap between the heat exchange tank shell 21 and the heat exchange air pipe 25; then, the induced draft fan compresses the air and sends it into the heat exchange air pipe 25 from the cold air inlet 26. The compressed air in the heat exchange air pipe 25 absorbs heat and forms hot air. The hot air then enters the second air pipe 38 from the hot air outlet 23, and then sequentially enters the rotary joint 37, the first air pipe 36 and the air outlet plate 35. Finally, it is sprayed into the inner cylinder shell 34 from the air outlet plate 35 to dry the polishing powder screened in the inner cylinder shell 34 with hot air. During the rotation process, the polishing powder is dried and dehydrated, which greatly accelerates the dehydration efficiency.

[0024] like Figure 1 and Figure 4 As shown, the fabric sieve assembly 9 includes a fixed frame 91 fixed inside the drying chamber 8, and a sieve 95 slidably mounted on the fixed frame 91. A heating wire 92 is provided on the inner side of the fixed frame 91, and a set of slide rails 93 are provided on both sides of the upper end of the fixed frame 91. A set of sliding grooves 94 matching the slide rails 93 are provided at the lower end of the sieve 95. The matching of the sliding grooves 94 and the slide rails 93 allows for easy removal of the sieve 95. The polishing powder, initially dried in the drying tank 3, is evenly distributed on the sieve 95, and then heat is generated by the heating wire 92 to further dry the polishing powder at a low temperature. This results in good drying effect and achieves high efficiency and energy saving.

[0025] like Figure 4 , Figure 5 and Figure 6 As shown, the moving fabric mechanism 11 includes a vertical lead screw assembly located above and a horizontal lead screw assembly located below. Both the vertical and horizontal lead screw assemblies include a ball screw 115 and a guide rod 114 arranged parallel to the ball screw 115. A fixing frame 119 is provided on the outer side of the ball screw 115 and the guide rod 114. A lead screw motor 116 is fixedly mounted on one end of the ball screw 115 on the fixing frame 119. A nut pair 117 is engaged with the ball screw 115. A guide sleeve 118 is slidably connected to the guide rod 114. The lower ends of the guide rod 114 and the guide sleeve 118 on the vertical lead screw assembly are connected to the fixing frame 119 on the horizontal lead screw assembly. The lower ends of the guide rod 114 and the guide sleeve 118 on the horizontal lead screw assembly are connected to a connecting rod. The lower end of the connecting rod 120 is connected to the front of the feeding port 121. The upper end of the feeding port 121 is fixedly connected to a flexible hose 113. One end of each flexible hose 113 is connected to the main material pipe 111 through a solenoid valve 112. The number of feeding ports 121 matches the number of drying tanks 3. The main material pipe 111 is connected to the feed pipe 7. The ball screw 115 is rotated by the screw motor 116, which causes the nut assembly 117 to move horizontally along the ball screw 115, thereby driving the guide sleeve 118 to move horizontally along the guide rod 114. Through the cooperation of the vertical screw assembly and the horizontal screw assembly, the feeding port 121 can be moved back and forth and left and right by the connecting rod 120, thereby evenly distributing the polishing powder in the material screen 95, ensuring the uniformity of drying.

[0026] The working principle of this utility model is as follows: After the polishing powder after fluorination reaction is dehydrated by pressure filtration, it is added into the screen cylinder 32 through the feeding port 4; then, the motor 310 is started, the motor 310 drives the pulley group 39 to rotate, the pulley group 39 drives the air pipe 36 to rotate at the rotary joint 37, the air pipe 36 drives the inner cylinder shell 34, the air outlet plate 35 and the screen cylinder 32 to rotate together, so that the polishing powder contained in the screen cylinder 32 undergoes centrifugal motion, disperses the polishing powder, and makes the polishing powder of the specified particle size throw into the inner cylinder shell 34;

[0027] Next, the hot water inlet 22 is connected to the hot water outlet of the boiler through a pipe, and the warm water outlet 24 is connected to the return water inlet of the boiler; then the cold air inlet 26 is connected to the external induced draft fan; the boiler sends hot water from the hot water inlet 22 into the gap between the heat exchange tank shell 21 and the heat exchange air pipe 25; then the induced draft fan compresses the air and sends it into the heat exchange air pipe 25 from the cold air inlet 26. After the compressed air in the heat exchange air pipe 25 absorbs heat, it becomes hot air. The hot air then enters the second air pipe 38 from the hot air outlet 23, and then enters the rotary joint 37, the first air pipe 36 and the air outlet plate 35 in sequence. Finally, it is sprayed into the inner cylinder shell 34 from the air outlet plate 35 to dry the polishing powder screened in the inner cylinder shell 34.

[0028] After the initial drying is completed, the suction pump 5 is started. The suction pump 5 generates negative pressure at the suction nozzle 311, which draws the polishing powder in the inner cylinder shell 34 into the suction pipe 33. The polishing powder in the suction pipe 33 then passes through the suction pump 5 and the feed pipe 7 in sequence and enters the main feed pipe 111. After the corresponding solenoid valve 112 is opened, the polishing powder enters the corresponding hose 113. Next, the screw motors 116 on the vertical screw assembly and the horizontal screw assembly are started in sequence. The screw motors 116 drive the ball screw 115 to rotate, so that the nut assembly 117 moves horizontally along the ball screw 115. Then, through the connecting rod 120, the feeding port 121 moves back and forth and left and right, so that the polishing powder in the hose 113 is evenly distributed in the material screen 95 from the feeding port 121. Then, heat is generated by the heating wire 92 to dry the polishing powder again in a low-temperature environment.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency and energy-saving multi-stage drying equipment for polishing powder, comprising a drying tank (3) and a drying chamber (8) located on one side of the drying tank (3), wherein a tank cover (1) is installed on the upper end of the drying tank (3), and a chamber door (10) is rotatably connected to the front side of the drying chamber (8), characterized in that, A water-air heat exchange mechanism (2) is installed on one side of the lower end of the drying tank (3), and a suction pump (5) is connected to the inner side of the tank cover (1) at the upper end of the drying tank (3). The output end of the suction pump (5) is connected to a moving material distribution mechanism (11) through a feed pipe (7). Several material distribution screen assemblies (9) are evenly arranged on the inner side of the drying box (8). The drying tank (3) includes a drying tank shell (31). An inner cylinder shell (34) is installed inside the drying tank shell (31). A screen cylinder (32) is installed inside the inner cylinder shell (34). A suction pipe (33) is provided through the inner side of the screen. The lower end of the suction pipe (33) is located between the screen cylinder (32) and the inner cylinder shell (34) and is connected to a suction horn (311). The lower end of the inner cylinder shell (34) is fixedly connected to an air pipe (36). The upper end of the air pipe (36) is located at the bottom of the inner side of the inner cylinder shell (34) and is provided with an air outlet plate (35). The lower end of the air pipe (36) is rotatably connected to an air pipe (38) through a rotary joint (37). The outer side of the air pipe (36) is equipped with a motor (310) through a pulley group (39).

2. The high-efficiency and energy-saving multi-stage drying equipment for polishing powder according to claim 1, characterized in that, The moving fabric mechanism (11) includes a vertical lead screw assembly located above and a horizontal lead screw assembly located below; both the vertical lead screw assembly and the horizontal lead screw assembly include a ball screw (115) and a guide rod (114) arranged parallel to the ball screw (115). A fixing frame (119) is provided on the outer side of the ball screw (115) and the guide rod (114), and a lead screw motor (116) is fixedly installed on one end of the ball screw (115) on the fixing frame (119). A nut pair (117) is engaged with the ball screw (115), and the guide rod (114) A guide sleeve (118) is slidably connected to the vertical screw assembly. The lower ends of the guide rod (114) and the guide sleeve (118) on the vertical screw assembly are connected to the fixing frame (119) on the horizontal screw assembly. The lower ends of the guide rod (114) and the guide sleeve (118) on the horizontal screw assembly are connected to a connecting rod (120). The front side of the lower end of the connecting rod (120) is connected to a fabric inlet (121). A flexible hose (113) is fixedly connected to the upper end of the fabric inlet (121). One end of each flexible hose (113) is connected to the main material pipe (111) through a solenoid valve (112).

3. The high-efficiency energy-saving multi-stage drying equipment for polishing powder according to claim 1, characterized in that, The water-air heat exchange mechanism (2) includes a heat exchange tank shell (21) and a heat exchange tank cover (27) that cooperates with the heat exchange tank shell (21). A heat exchange air pipe (25) is installed inside the heat exchange tank shell (21). A cold air inlet (26) is provided at one end of the heat exchange tank cover (27), and a hot air outlet (23) is provided at one end of the heat exchange tank shell (21) away from the heat exchange tank cover (27).

4. The high-efficiency and energy-saving multi-stage drying equipment for polishing powder according to claim 3, characterized in that, A hot water inlet (22) is provided at the lower end of the outer side of the heat exchange tank shell (21), and a warm water outlet (24) is provided at the upper end of the outer side of the heat exchange tank shell (21). The hot air outlet (23) is connected to the second air pipe (38).

5. The high-efficiency and energy-saving multi-stage drying equipment for polishing powder according to claim 1, characterized in that, A feeding port (4) is provided on one side of the upper end of the can lid (1), and an exhaust port (6) is provided on the other side of the upper end of the can lid (1).

6. The high-efficiency and energy-saving multi-stage drying equipment for polishing powder according to claim 1, characterized in that, The fabric sieve assembly (9) includes a fixed frame (91) fixed inside the drying box (8) and a material sieve (95) slidably disposed on the fixed frame (91). The inner side of the fixed frame (91) is provided with an electric heating wire (92), and a set of slide rails (93) are provided on both sides of the upper end of the fixed frame (91). The lower end of the material sieve (95) is provided with a set of slide grooves (94) that match the slide rails (93).

Images