Spray dryer with mother liquor preheating function

Abstract

The utility model relates to a spray dryer with a mother liquor preheating function, which aims to solve the technical problem that the mother liquor is inconvenient to preheat by the aid of hot air separated by a cyclone separator at present, and comprises a spray dryer body, and the top of the spray dryer body is communicated with a preheating box through a first guide pipe. The other end of the preheating box is communicated with a liquid inlet pipe; the tail end of the spray dryer body is communicated with a cyclone separator through a second guide pipe, the top of the cyclone separator is connected with the bottom of a preheating box through a third guide pipe, rotating joints are fixed to the two end faces of an inner cavity of the preheating box in a penetrating mode, and a plurality of evenly-distributed aluminum pipes are communicated between the two rotating joints. The mother liquor is preheated through hot air with temperature separated by the cyclone separator, so that energy is saved when the mother liquor enters the drying machine for drying, meanwhile, the mother liquor can be shunted through a plurality of aluminum pipes after entering the preheating box, the contact area between the mother liquor and the hot air is increased, and the preheating effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of spray dryer technology, specifically a spray dryer with mother liquor preheating function. Background Technology

[0002] A spray dryer is a continuous atmospheric pressure drying equipment. Its core principle is to atomize liquid materials into tiny droplets, allowing them to come into full contact with hot air and rapidly evaporate the moisture, ultimately obtaining a powdered product.

[0003] In existing spray dryers, the mother liquor is introduced into the dryer, sprayed through nozzles, and then dried by hot air inside the dryer. The atomized droplets are then separated by a cyclone separator. However, this method lacks the function of preheating the mother liquor. Drying at low temperatures requires significant energy, and it is inconvenient to use the hot air separated by the cyclone separator to preheat the mother liquor. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a spray dryer with a mother liquor preheating function to solve the technical problem that it is currently inconvenient to use the hot gas separated by a cyclone separator to preheat the mother liquor.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design a spray dryer with mother liquor preheating function, including: a spray dryer body, the top of the spray dryer body is connected to a preheating box through a first conduit, and the other end of the preheating box is connected to a liquid inlet pipe;

[0006] The tail end of the spray dryer body is connected to the cyclone separator through the second conduit. The top of the cyclone separator is connected to the bottom of the preheating box through the third conduit. Rotary joints are fixed through both ends of the inner cavity of the preheating box. Multiple evenly distributed aluminum tubes are connected between the two rotary joints. The outer ends of the two rotary joints are connected to the first conduit and the liquid inlet pipe, respectively.

[0007] Specifically, the mother liquor is first introduced into the aluminum tube through the inlet pipe, and then into the first conduit, thus introducing the material into the spray dryer body for drying. After drying, it is introduced into the cyclone separator through the second conduit for separation, and the separated hot air enters the preheating box through the third conduit to preheat the mother liquor in the aluminum tube, so that the mother liquor entering the spray dryer body has a certain temperature, which helps to reduce the energy consumption required for drying. After entering the preheating box, the mother liquor is diverted into multiple aluminum tubes, which increases the contact area with the hot air and thus helps to improve the preheating effect.

[0008] Preferably, a drive assembly is connected to the outer wall of one of the rotary joints. The drive assembly includes a servo motor, which is fixedly installed on the back of the preheating box. A first gear is fixedly connected to the outer end of the drive shaft of the servo motor. A second gear meshes with the outer wall of the first gear, and the second gear is fixedly fitted onto the outer wall of the rotary joint.

[0009] Specifically, the servo motor drives the first gear to rotate, which in turn drives the second gear to rotate, thereby driving the rotary joint to rotate, which in turn drives multiple aluminum tubes to rotate. This improves the uniformity of contact between the hot air and the aluminum tubes, which in turn further enhances the heat exchange effect and the preheating effect.

[0010] Preferably, an exhaust pipe is fixedly connected to one side of the top of the preheating box.

[0011] Preferably, the third conduit and the exhaust pipe are located at both ends of the preheating box.

[0012] Specifically, this allows the hot air to move along the length of the preheating chamber, which helps to further improve the contact between the hot air and the aluminum tube, thereby further enhancing the preheating effect.

[0013] Preferably, the bottom of the inner cavity of the preheating box is provided with an insert groove, and an air distribution plate is fixedly installed in the insert groove. The air distribution plate is a hollow structure, and the top of the air distribution plate is provided with multiple evenly distributed air outlets. The top of the third conduit passes through the preheating box and communicates with the air distribution plate.

[0014] It should be understood that the multiple evenly distributed air outlets on the top of the air distribution plate can accurately guide the gas to the aluminum tube, thereby improving the contact effect with the aluminum tube and thus improving the preheating effect.

[0015] Preferably, the tail end of the cyclone separator is detachably threaded with a collection container.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model preheats the mother liquor by introducing the heated gas separated by the cyclone separator into the preheating box, thereby giving the mother liquor a certain base temperature. This helps to reduce energy consumption and save energy when it enters the dryer for drying. At the same time, the mother liquor can be diverted through multiple aluminum tubes after entering the preheating box, which helps to increase the contact area with the hot gas and thus improve the preheating effect.

[0018] 2. This utility model uses a gas distribution plate to evenly guide gas to aluminum tubes, and a servo motor drives the first gear to rotate, which in turn drives the second gear to rotate, thereby driving the rotary joint to rotate, which in turn drives multiple aluminum tubes to rotate. This improves the uniformity of contact between hot gas and aluminum tubes, which in turn helps to further improve the heat exchange effect and the preheating effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the inner cavity of the preheating box of this utility model;

[0021] Figure 3 This is an enlarged structural diagram of part A of the present invention;

[0022] Figure 4 This is a rear view structural diagram of the preheating box of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the air distribution plate and the third conduit of this utility model.

[0024] In the diagram: 1. Spray dryer body; 11. First duct; 12. Second duct; 13. Cyclone separator; 14. Third duct;

[0025] 2. Preheating box; 21. Exhaust pipe; 22. Liquid inlet pipe; 23. Rotary joint; 24. Aluminum pipe; 25. Air distribution plate;

[0026] 3. Servo motor; 31. Second gear; 32. First gear. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Example 1: Spray dryer with mother liquor preheating function, see [link to example]. Figures 1 to 5 It includes: a spray dryer body 1, the top of the spray dryer body 1 is connected to a preheating box 2 through a first conduit 11, and the other end of the preheating box 2 is connected to a liquid inlet pipe 22;

[0029] Specifically, the inlet pipe 22 introduces the mother liquor into the preheating box 2 for preheating, and then uses the first conduit 11 to introduce it into the spray dryer body 1 for spray drying.

[0030] The tail end of the spray dryer body 1 is connected to the cyclone separator 13 through the second conduit 12. The top of the cyclone separator 13 is connected to the bottom of the preheating box 2 through the third conduit 14. Rotary joints 23 are fixed through both ends of the inner cavity of the preheating box 2. Multiple evenly distributed aluminum tubes 24 are connected between the two rotary joints 23. The outer ends of the two rotary joints 23 are connected to the first conduit 11 and the liquid inlet pipe 22, respectively.

[0031] It should be noted that the working principle of the spray dryer body 1 is that after the air is filtered and heated, it enters the air distributor at the top of the dryer. The hot air enters the drying chamber in a spiral shape and evenly. The liquid material is pumped from the liquid tank through the filter to the centrifugal atomizer of the dryer, so that the liquid material is sprayed into extremely small mist droplets. The liquid material and the hot air come into contact in parallel flow, and the moisture evaporates rapidly, drying into a powdered finished product in a very short time.

[0032] It should be understood that in actual use, the mother liquor is first introduced into the aluminum tube 24 through the inlet pipe 22, and then into the first conduit 11, so that the material is introduced into the spray dryer body 1 for drying. After drying, it is introduced into the cyclone separator 13 through the second conduit 12 for separation. The separated hot air will enter the preheating box 2 through the third conduit 14 to preheat the mother liquor in the aluminum tube 24, so that the mother liquor entering the spray dryer body 1 has a certain temperature, which helps to reduce the energy consumption required for drying. After entering the preheating box 2, the mother liquor is diverted into multiple aluminum tubes 24, which can increase the contact area with the hot air and thus help to improve the preheating effect.

[0033] Furthermore, an exhaust pipe 21 is fixedly connected to one side of the top of the preheating box 2. The exhaust pipe 21 is designed to discharge the gas after heat exchange.

[0034] Furthermore, the bottom of the inner cavity of the preheating box 2 is provided with an embedding groove, and an air distribution plate 25 is fixedly installed in the embedding groove. The air distribution plate 25 is a hollow structure, and multiple evenly distributed air outlets are provided on the top of the air distribution plate 25. The top of the third conduit 14 passes through the preheating box 2 and is connected to the air distribution plate 25.

[0035] It should be understood that the multiple evenly distributed air outlets on the top of the air distribution plate 25 can accurately guide the gas to the aluminum tube 24, thereby improving the contact effect with the aluminum tube 24 and thus improving the preheating effect.

[0036] It is worth mentioning that the tail end of the cyclone separator 13 is detachably threaded with a collection container, which allows for the collection of dried material.

[0037] like Figure 1 , Figure 2 , Figure 4As shown, a drive assembly is connected to the outer wall of one of the rotary joints 23. The drive assembly includes a servo motor 3, which is fixedly installed on the back of the preheating box 2. A first gear 32 is fixedly connected to the outer end of the drive shaft of the servo motor 3. A second gear 31 meshes with the outer wall of the first gear 32. The second gear 31 is fixedly fitted onto the outer wall of the rotary joint 23.

[0038] It should be understood that by driving the first gear 32 to rotate through the servo motor 3, the second gear 31 can be driven to rotate, thereby driving the rotary joint 23 to rotate, which in turn drives multiple aluminum tubes 24 to rotate. This improves the uniformity of contact between the hot air and the aluminum tubes 24, which in turn helps to further improve the heat exchange effect and the preheating effect.

[0039] It should be noted that the third conduit 14 and the exhaust pipe 21 are respectively distributed at both ends of the preheating box 2, so that the movement trajectory of the hot air in the preheating box 2 has a movement in the length direction of the preheating box 2, which is conducive to further improving the contact effect between the hot air and the aluminum pipe 24, and thus further improving the preheating effect.

[0040] The implementation principle of this embodiment is as follows: First, the mother liquor enters the aluminum tube 24 through the inlet pipe 22, then enters the first conduit 11 and enters the spray dryer body 1 for drying. Next, it enters the cyclone separator 13 through the second conduit 12 for separation. The separated hot air enters the air distribution plate 25 through the third conduit 14 and is then discharged through the air outlet. When the mother liquor enters the preheating box 2, it is diverted into multiple aluminum tubes 24. The aluminum tubes 24 contact the hot air, preheating the mother liquor to a certain base temperature before it enters the spray dryer body 1 for drying. This reduces energy consumption, and the multiple aluminum tubes 24 come into contact with hot air, thereby increasing the contact effect with hot air and improving the heat exchange effect, which in turn improves the preheating effect of the mother liquor. At the same time, during preheating, the servo motor 3 drives the first gear 32 to rotate, which in turn drives the second gear 31 to rotate, thereby driving the rotary joint 23 to rotate, which in turn drives the multiple aluminum tubes 24 to rotate, thereby improving the uniformity of contact between hot air and aluminum tubes 24, which further improves the heat exchange effect and the preheating effect.

[0041] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0042] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A spray dryer with mother liquor preheating function, characterized in that, include: The spray dryer body (1) has its top connected to the preheating box (2) via a first conduit (11), and the other end of the preheating box (2) is connected to a liquid inlet pipe (22). The tail end of the spray dryer body (1) is connected to the cyclone separator (13) through the second conduit (12). The top of the cyclone separator (13) is connected to the bottom of the preheating box (2) through the third conduit (14). Rotary joints (23) are fixed through both ends of the inner cavity of the preheating box (2). Multiple evenly distributed aluminum tubes (24) are connected between the two rotary joints (23). The outer ends of the two rotary joints (23) are connected to the first conduit (11) and the liquid inlet pipe (22) respectively.

2. The spray dryer with mother liquor preheating function as described in claim 1, characterized in that, One of the rotary joints (23) has a drive assembly connected to its outer wall. The drive assembly includes a servo motor (3). The servo motor (3) is fixedly installed on the back of the preheating box (2). The outer end of the drive shaft of the servo motor (3) is fixedly connected to a first gear (32). The outer wall of the first gear (32) is meshed with a second gear (31). The second gear (31) is fixedly fitted onto the outer wall of the rotary joint (23).

3. The spray dryer with mother liquor preheating function as described in claim 2, characterized in that, An exhaust pipe (21) is fixedly connected to one side of the top of the preheating box (2).

4. The spray dryer with mother liquor preheating function as described in claim 3, characterized in that, The third conduit (14) and the exhaust pipe (21) are respectively located at both ends of the preheating box (2).

5. The spray dryer with mother liquor preheating function as described in claim 1, characterized in that, The bottom of the inner cavity of the preheating box (2) is provided with an insert groove, and an air distribution plate (25) is fixedly installed in the insert groove. The air distribution plate (25) is a hollow structure, and the top of the air distribution plate (25) is provided with multiple evenly distributed air outlet holes. The top of the third conduit (14) passes through the preheating box (2) and is connected to the air distribution plate (25).

6. The spray dryer with mother liquor preheating function as described in claim 1, characterized in that, The tail end of the cyclone separator (13) is detachably threaded with a collection container.

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