Polyaluminum chloride drying tower

Abstract

The utility model relates to polyaluminium chloride drying technical field especially relates to a kind of polyaluminium chloride drying tower, including installation base and drying barrel, drying barrel is provided with the drying mechanism for drying liquid polyaluminium chloride as powdery polyaluminium chloride, vibration mechanism for preventing undried polyaluminium chloride from sticking to drying barrel inner wall is installed in drying barrel.The utility model is through rotating sleeve, driving gear, abutment rod, wedge abutment rod and strong spring, first hot air machine and second hot air machine, atomizer, make liquefied polyaluminium chloride moisture be evaporated rapidly, rotating sleeve inner wall generates a high frequency, small amplitude mechanical impact.Simultaneously vibration mechanism is directly installed in the key area where material is easy to stick, can effectively shake and fall the semi-dry or dry powder attached on wall, effectively ensure that material flows unobstructed, to realize the continuous, automated long-period operation in true sense, help to reduce the number and time of shutdown cleaning.

Description

Technical Field

[0001] This utility model relates to the field of polyaluminum chloride drying technology, and in particular to a polyaluminum chloride drying tower. Background Technology

[0002] Existing drying towers, such as the one disclosed in CN218645950U, are commonly used. These towers use agitation components to stir the material, combined with a heating mechanism for drying. While this design improves the drying rate to some extent, it still has the following drawbacks in practical applications: First, during the drying process, semi-dry or powdered polyaluminum chloride easily adheres to the inner wall of the tower, forming clumps. This hinders material flow, requiring frequent shutdowns for cleaning and affecting production continuity. Second, a single heating method makes it difficult to achieve segmented drying of the material, easily causing localized overheating or residual moisture, affecting the product's activity, whiteness, and solubility. Utility Model Content

[0003] The purpose of this invention is to solve the problems of material adhesion and poor drying uniformity in the prior art, and to propose a polyaluminum chloride drying tower.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A polyaluminum chloride drying tower includes a mounting base and a drying tank. The drying tank is equipped with a drying mechanism for drying liquid polyaluminum chloride into powdered polyaluminum chloride. The drying tank is also equipped with a vibration mechanism to prevent undried polyaluminum chloride from sticking to the inner wall of the drying tank.

[0006] Preferably, the drying barrel is fixedly installed at the top of the mounting base, and the drying barrel has a high-temperature chamber, a low-temperature chamber and a receiving bin.

[0007] Preferably, the drying mechanism includes an atomizer for atomizing polyaluminum chloride fixedly installed at the top of the high-temperature chamber, a first air heater for providing hot air to the high-temperature chamber installed at the top of the drying barrel, a second air heater for providing hot air to the low-temperature chamber and reheating the powdered polyaluminum chloride installed on the outer wall of the drying barrel, a feeding through hole communicating with the low-temperature chamber at the bottom of the high-temperature chamber, and a fan for collecting the completely dried polyaluminum chloride installed at the top of the receiving bin.

[0008] Preferably, the inner wall of the high-temperature chamber is provided with an annular air duct, the top of the drying barrel is provided with an installation through hole that connects to the annular air duct, a first air heater is installed in the installation through hole, the inner wall of the high-temperature chamber is provided with a linear through hole that connects to the annular air duct, and hot air is centrally gathered by the linear through hole and falls into the feeding through hole, and the temperature of the first air heater is higher than that of the second air heater.

[0009] Preferably, the vibration mechanism includes a rotating sleeve rotatably mounted on the top of the receiving hopper, a rectangular through hole is provided on the outer wall of the drying barrel, a drive gear for driving the rotating sleeve to rotate is provided on the top of the mounting base, and a contact structure is provided between the outer wall of the rotating sleeve and the inner wall of the drying barrel for contacting the rotating sleeve to cause the polyaluminum chloride to fall off.

[0010] Preferably, the contact structure includes a contact rod circumferentially mounted on the inner wall of the drying barrel, a limiting groove is formed on the outer wall of the rotating sleeve, a wedge-shaped contact rod for contacting the inner wall of the rotating sleeve is slidably mounted on the limiting groove, a strong spring is fixedly mounted at the port of the wedge-shaped contact rod and the limiting groove, and the strong spring is nested on the wedge-shaped contact rod, teeth that mesh with the drive gear are fixedly mounted on the bottom outer wall of the rotating sleeve, and the rotating sleeve is installed in the low temperature chamber.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. This utility model utilizes a first hot air blower, a second hot air blower, and an atomizer to rapidly evaporate the moisture from liquefied polyaluminum chloride, completing the initial drying and molding, as well as a secondary gentle heating. This effectively ensures that residual moisture is completely removed while avoiding excessively high temperatures that could damage the molecular structure of polyaluminum chloride. It also helps prevent the product from clumping and turning yellow, ensuring the activity, whiteness, and solubility of the final powder product.

[0013] 2. This invention utilizes an annular air duct and linear through-holes to prevent hot air from being blown in randomly. Instead, the linear through-holes at a specific angle create a centripetal force, converging the falling atomized material towards the center and guiding it precisely through the feeding through-holes into the low-temperature chamber. This helps reduce adhesion and ineffective residence time on the high-temperature chamber wall, accelerates material flow, improves drying efficiency and production line continuity, and effectively increases product yield.

[0014] 3. This utility model utilizes a rotating sleeve, drive gear, contact rod, wedge-shaped contact rod, and powerful spring. The rotating sleeve's inner wall generates a high-frequency, small-amplitude mechanical impact. Simultaneously, the vibration mechanism is directly installed in key areas where materials easily adhere, effectively shaking off semi-dry or dry powder adhering to the wall. This ensures unobstructed material flow, achieving truly continuous, automated, long-cycle operation and reducing the frequency and time of downtime for cleaning. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a polyaluminum chloride drying tower proposed in this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of a polyaluminum chloride drying tower proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the drying mechanism of a polyaluminum chloride drying tower proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the oscillation mechanism of a polyaluminum chloride drying tower proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the opposing structure of a polyaluminum chloride drying tower proposed in this utility model.

[0020] In the diagram: 1. Mounting base; 2. Drying barrel; 3. Drying mechanism; 31. High-temperature chamber; 32. Low-temperature chamber; 33. Second air heater; 34. Fan; 35. Annular air duct; 36. Linear through hole; 37. First air heater; 38. Receiving hopper; 39. Atomizer; 310. Feeding through hole; 4. Vibration mechanism; 41. Rotating sleeve; 42. Tooth; 43. Rectangular through hole; 44. Drive gear; 45. Abutment rod; 46. Wedge-shaped abutment rod; 47. Strong spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-5 A polyaluminum chloride drying tower includes a mounting base 1 and a drying tank 2. The drying tank 2 is equipped with a drying mechanism 3 for drying liquid polyaluminum chloride into powdered polyaluminum chloride. The drying mechanism 3 includes an atomizer 39 for atomizing polyaluminum chloride, which is fixedly installed at the top of a high-temperature chamber 31. The atomizer 39 is fixed in the center mounting hole at the top of the high-temperature chamber 31 by a flange. A ceramic heat insulation gasket is placed between the flange and the inner wall of the high-temperature chamber 31 to prevent high temperature from being conducted to the housing of the atomizer 39. The nozzle of the atomizer 39 faces the inside of the high-temperature chamber 31 and forms a 45° angle with the air outlet direction of the linear through hole 36 to ensure that the atomized droplets are in full contact with the hot air.

[0023] The top of the drying barrel 2 is equipped with a first air heater 37 for providing hot air to the high-temperature chamber 31. The air outlet of the first air heater 37 is connected to the mounting through hole at the top of the drying barrel 2 through a high-temperature resistant silicone hose. Both ends of the hose are double-sealed with clamps and sealing gaskets. The interface between the mounting through hole and the annular air duct 35 is welded to form an integrated channel to avoid temperature loss caused by hot air leakage.

[0024] The outer wall of the drying barrel 2 is equipped with a second air heater 33 for providing hot air to the low-temperature chamber 32 and for secondary heating of the powdered polyaluminum chloride. The air outlet of the second air heater 33 is connected to the air inlet of the outer wall of the drying barrel 2 through a metal corrugated pipe, and the air outlet is located above the rotating sleeve 41.

[0025] The inner wall of the high-temperature chamber 31 is provided with an annular air duct 35, and the top of the drying barrel 2 is provided with an installation through hole that connects to the annular air duct 35. The first air heater 37 is installed in the installation through hole. The inner wall of the high-temperature chamber 31 is provided with a linear through hole 36 that connects to the annular air duct 35. Hot air is centrally gathered by the linear through hole 36 and falls into the feeding through hole 310. The temperature of the first air heater 37 is higher than that of the second air heater 33.

[0026] The drying barrel 2 is equipped with a vibration mechanism 4 to prevent undried polyaluminum chloride from sticking to the inner wall of the drying barrel 2. The drying barrel 2 is fixedly installed at the top of the mounting base 1. The drying barrel 2 has a high temperature chamber 31, a low temperature chamber 32 and a receiving bin 38. The bottom of the high temperature chamber 31 has a feeding through hole 310 that connects to the low temperature chamber 32. The top of the receiving bin 38 is equipped with a fan 34 for collecting the completely dried polyaluminum chloride.

[0027] The vibration mechanism 4 includes a rotating sleeve 41 rotatably mounted on the top of the receiving hopper 38. The top of the rotating sleeve 41 is rotatably connected to the top flange of the receiving hopper 38 through a thrust ball bearing, and the bottom is slidably engaged with the inner wall of the receiving hopper 38 through a guide sleeve, which restricts the axial movement of the rotating sleeve 41 and ensures that the teeth 42 and the drive gear 44 always maintain a stable meshing state.

[0028] The outer wall of the drying drum 2 has a rectangular through hole 43. The top of the mounting base 1 is equipped with a drive gear 44 for driving the rotating sleeve 41 to rotate. The top of the mounting base 1 is fixedly mounted with a drive motor for driving the drive gear 44. The output shaft of the drive motor and the central shaft of the drive gear 44 are coaxial. The output shaft of the drive motor is rigidly connected to the shaft of the drive gear 44 through a flexible coupling. The coupling adopts a keyway fit and set screw locking structure to ensure that the power is transmitted without slippage. The two ends of the shaft of the drive gear 44 are installed in the bearing seats of the mounting base 1 through deep groove ball bearings. The bearing seats and the mounting base 1 are fixed with bolts to ensure the coaxiality and stability of the drive gear 44 when rotating.

[0029] The outer wall of the rotating sleeve 41 and the inner wall of the drying barrel 2 are provided with a contact structure for contacting the rotating sleeve 41 to cause the polyaluminum chloride to fall off. The contact structure includes a contact rod 45 circumferentially installed on the inner wall of the drying barrel 2. The contact rod 45 is made of stainless steel round rod, one end of which is fixed to a preset mounting seat on the inner wall of the drying barrel 2 by welding, and the other end is polished in an arc shape. Four to six contact rods 45 are evenly distributed along the circumference of the inner wall of the drying barrel 2, with equal spacing between adjacent rods, to ensure that the wedge-shaped contact rods 46 can periodically collide with the rotating sleeve 41 when it rotates, and the number of wedge-shaped contact rods 46 is the same as the number of contact rods 45 in the circumferential arrangement.

[0030] A limiting groove is provided on the outer wall of the rotating sleeve 41. A guide rail is machined on the inner wall of the limiting groove on the outer wall of the rotating sleeve 41. A slider adapted to the guide rail is provided at the bottom of the wedge-shaped contact rod 46. The slider and the guide rail are fitted with a clearance to ensure that the wedge-shaped contact rod 46 can slide smoothly along the limiting groove. High-temperature grease is applied to the surface of the guide rail to reduce sliding friction loss.

[0031] A wedge-shaped abutment rod 46 for abutting against the inner wall of the rotating sleeve 41 is slidably installed on the limiting groove. A strong spring 47 is fixedly installed at the port of the limiting groove and the wedge-shaped abutment rod 46. One end of the strong spring 47 is fixed to the port baffle of the limiting groove by welding, and the other end is connected to the tail end of the wedge-shaped abutment rod 46 by a buckle. The strong spring 47 can preferably be made of high temperature resistant alloy material to ensure that it maintains stable elastic performance at the working temperature of the low temperature cavity 32, and the strong spring 47 is nested on the wedge-shaped abutment rod 46.

[0032] The bottom outer wall of the rotating sleeve 41 is fixedly equipped with teeth 42 that mesh with the drive gear 44. The teeth of the drive gear 44 and the teeth 42 on the outer wall of the rotating sleeve 41 can preferably adopt a standard involute tooth profile with a module of 2.5 and a pressure angle of 20°. The meshing clearance is controlled at 0.15-0.2mm. The teeth extend into the barrel through the rectangular through hole 43 on the outer wall of the drying barrel 2 to achieve interference-free meshing. A wear-resistant rubber sealing ring is installed on the inner edge of the rectangular through hole 43 to prevent dust leakage and to provide a certain buffer for the meshing of the drive gear 44. The rotating sleeve 41 is installed in the low temperature chamber 32.

[0033] It should be noted that the specific model and specifications of the drive motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0034] The functional principle of this utility model can be explained through the following operation methods:

[0035] When it is necessary to dry polyaluminum chloride:

[0036] First, start the atomizer 39 and the first air heater 37 in the drying mechanism 3.

[0037] Subsequently, liquid polyaluminum chloride is sprayed into the high-temperature chamber 31 by the atomizer 39. At the same time, the high-temperature hot air generated by the first air heater 37 passes through the annular air duct 35 and is blown out at a specific angle from the linear through hole 36.

[0038] During this process, the high-temperature hot air comes into instantaneous contact with the atomized droplets, and the moisture is rapidly evaporated, completing the initial drying and shaping. At the same time, the centripetal force generated by the linear through-hole 36 gathers the material towards the center, guiding it to fall precisely into the low-temperature chamber 32 through the feeding through-hole 310.

[0039] Next, the preliminarily dried material enters the low-temperature chamber 32 through the feeding through hole 310.

[0040] At the same time, the second air heater 33 starts up, providing hot air at a temperature lower than that of the first air heater 37 to the low-temperature chamber 32.

[0041] During this stage, the material undergoes a secondary gentle heating in the low-temperature chamber 32 to ensure that residual moisture is completely removed, while avoiding damage to the product's molecular structure by high temperature. This effectively prevents the product from clumping and turning yellow, and ensures the product's activity, whiteness, and solubility.

[0042] Then, the completely dried powder is collected under the negative pressure generated by the fan 34 at the top of the receiving hopper 38.

[0043] Throughout the drying process, the drive gear 44 drives the rotating sleeve 41 to rotate continuously at the top of the low temperature chamber 32 and the receiving hopper 38 through the meshing teeth 42.

[0044] When the rotating sleeve 41 rotates, the wedge-shaped abutment rod 46 on its outer wall will periodically collide and squeeze with the abutment rod 45 fixed on the inner wall of the drying barrel 2, compressing the strong spring 47 and then quickly rebounding, thereby generating a high-frequency, small-amplitude mechanical impact vibration on the inner wall of the rotating sleeve 41.

[0045] 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 polyaluminum chloride drying tower, comprising a mounting base (1) and a drying drum (2), characterized in that, The drying barrel (2) is equipped with a drying mechanism (3) for drying liquid polyaluminum chloride into powdered polyaluminum chloride, and a vibration mechanism (4) is installed inside the drying barrel (2) to prevent undried polyaluminum chloride from sticking to the inner wall of the drying barrel (2).

2. The polyaluminum chloride drying tower according to claim 1, characterized in that, The drying barrel (2) is fixedly installed at the top of the mounting base (1), and the drying barrel (2) is provided with a high temperature chamber (31), a low temperature chamber (32) and a receiving bin (38).

3. The polyaluminum chloride drying tower according to claim 2, characterized in that, The drying mechanism (3) includes an atomizer (39) for atomizing polyaluminum chloride fixedly installed at the top of the high-temperature chamber (31), a first air heater (37) for providing hot air to the high-temperature chamber (31) installed at the top of the drying barrel (2), a second air heater (33) for providing hot air to the low-temperature chamber (32) and for secondary heating of powdered polyaluminum chloride installed on the outer wall of the drying barrel (2), a feeding through hole (310) for communicating with the low-temperature chamber (32) opened at the bottom of the high-temperature chamber (31), and a fan (34) for collecting completely dried polyaluminum chloride installed at the top of the receiving bin (38).

4. A polyaluminum chloride drying tower according to claim 3, characterized in that, The high-temperature chamber (31) has an annular air duct (35) on its inner wall. The drying barrel (2) has an installation through hole at its top that connects to the annular air duct (35). A first air heater (37) is installed in the installation through hole. The high-temperature chamber (31) has a linear through hole (36) that connects to the annular air duct (35). Hot air is gathered in the center of the polyaluminum chloride through the linear through hole (36) and falls into the feeding through hole (310). The temperature of the first air heater (37) is higher than that of the second air heater (33).

5. A polyaluminum chloride drying tower according to claim 2, characterized in that, The vibration mechanism (4) includes a rotating sleeve (41) rotatably mounted on the top of the receiving hopper (38). The outer wall of the drying barrel (2) is provided with a rectangular through hole (43). The top of the mounting base (1) is provided with a drive gear (44) for driving the rotating sleeve (41) to rotate. The outer wall of the rotating sleeve (41) and the inner wall of the drying barrel (2) are provided with a contact structure for contacting the rotating sleeve (41) to cause the polyaluminum chloride to fall off.

6. A polyaluminum chloride drying tower according to claim 5, characterized in that, The contact structure includes a contact rod (45) circumferentially installed on the inner wall of the drying barrel (2). A limiting groove is provided on the outer wall of the rotating sleeve (41). A wedge-shaped contact rod (46) for contacting the inner wall of the rotating sleeve (41) is slidably installed on the limiting groove. A strong spring (47) is fixedly installed at the port of the limiting groove and the strong spring (47) is nested on the wedge-shaped contact rod (46). A tooth (42) that meshes with the drive gear (44) is fixedly installed on the bottom outer wall of the rotating sleeve (41). The rotating sleeve (41) is installed in the low temperature chamber (32).

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