Novel spray drying tower

Abstract

The utility model provides a novel spray drying tower which comprises a tower body, an atomizer, a fan, an air supply pipeline, a first exhaust pipeline, a second exhaust pipeline, an oil storage cavity, a heat exchange sleeve, a heat exchange containing cavity and a heating wire. Heat with waste heat exhausted by the exhaust end of the tower body is conveyed to the air inlet end and the air outlet end of the fan through the first exhaust pipeline and the second exhaust pipeline respectively, so that the preheating treatment on the whole air path of air supply of the fan is improved, and the heat required by heating of the heating wire is reduced; heat emitted by a heating wire wound on the outer wall of a heat exchange containing cavity is uniformly conducted under the guidance of a heat exchange sleeve through heat conduction oil pumped in an oil storage cavity, so that air flow exhausted from the air outlet end of a fan is subjected to sufficient heat exchange in the heat exchange containing cavity; therefore, the heating wire can guarantee the temperature of the air supply air flow with low power, heating of liquid flow is improved through circular flowing of the heat conduction oil and utilization of exhaust waste heat recovery, the heating performance of the air flow is improved, and the working power and energy consumption of the heater are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature sterilization devices, in particular to a novel spray drying tower. Background Art

[0002] Spray drying tower is a drying equipment used in the fields of biological pesticides, medicine, food microorganisms, etc. Its working principle mainly involves dispersing liquid materials into fine droplets through an atomizer, and then rapidly evaporating the water under the action of hot air to achieve the drying process. The core components of the spray drying tower include sprayers, drying towers, hot air systems, collectors and control systems.

[0003] Sprayer: It converts liquid substances into tiny droplets and is the core component of the spray dryer. Sprayers are generally divided into two types: rotary type and pressure type. The former sprays liquid substances through a rotating nozzle, while the latter sprays liquid substances through high pressure.

[0004] Drying tower: It is the main drying area of ​​the spray dryer. There is a hot air system in the tower. The hot air passes through the droplets sprayed by the sprayer, evaporating them into gas, thus obtaining dry substances.

[0005] Hot air system: includes heater, heat exchanger, fan, etc. Its function is to heat the air to a certain temperature, and then evaporate it into gas through the droplets sprayed by the sprayer to achieve drying.

[0006] Collector: It is a device used by the spray dryer to collect the dried material. According to the needs, the collector can be designed in different forms, such as cyclone separator, bag filter, etc.

[0007] Control system: It is the core control system of the spray dryer, including sensors and control units such as temperature, humidity, and pressure. Its function is to monitor and control the operating status of the entire spray dryer to ensure the safety and stability of the drying process.

[0008] Spray dryer is widely used in chemical, food, medicine and other fields. It is a high-efficiency and energy-saving drying equipment.

[0009] However, the existing spray drying tower has high requirements on the performance of the heater during operation. A high-power heater is required to heat the atomized molecules, which results in high energy consumption and thus high production and processing costs. Utility Model Content

[0010] In view of this, the technical problem to be solved by the utility model is: how to provide a new type of spray drying tower to improve the heating of liquid flow through the circulation of heat transfer oil and the utilization of exhaust waste heat recovery, thereby improving the heating performance of air flow and reducing the working power and energy consumption of the heater.

[0011] To achieve the above purpose, the utility model proposes a novel spray drying tower, which includes: a tower body, an atomizer, a fan, an air supply pipeline, a first exhaust pipeline, a second exhaust pipeline, an oil storage chamber, a heat exchange sleeve, a heat exchange chamber, and a heating wire;

[0012] The atomizer is arranged on the top of the tower body, and an air inlet end is arranged on the top of the tower body, and the air flow transported by the air supply pipeline enters into the interior of the tower body through the air inlet end;

[0013] An exhaust end is arranged at the side of the tower body, and the first exhaust duct and the second exhaust duct are respectively connected to the exhaust ends, the first exhaust duct is connected to the air inlet end of the fan, and the second exhaust duct is connected to the air outlet end of the fan and connected to the heat exchange chamber;

[0014] The air supply pipeline is connected to the fan and the heat exchange chamber in sequence, and the end of the air supply pipeline is connected to the air inlet end;

[0015] The oil storage cavity contains heat transfer oil, and the oil storage cavity is connected to the heat exchange sleeve. The heat transfer oil in the oil storage cavity flows in the heat exchange sleeve under the driving action of the pump body. The heat exchange sleeve is sleeved on the outer wall of the heat exchange cavity, and the heating wire is connected between the heat exchange sleeve and the outer wall of the heat exchange cavity.

[0016] The air outlet end of the fan and the second exhaust duct are commonly connected to the heat exchange cavity, and the airflow delivered by the air outlet end of the fan and the second exhaust duct passes through the heat exchange cavity and then enters into the tower body through the air inlet end.

[0017] Furthermore, purification filters are respectively arranged on the first exhaust duct and the second exhaust duct.

[0018] Furthermore, a purification filter is provided between the heat exchange cavity and the air inlet end.

[0019] Furthermore, a solenoid valve is connected between the oil storage chamber and the heat exchange sleeve.

[0020] Compared with the related art, the utility model proposes a novel spray drying tower, which has the following beneficial effects: the waste heat gas discharged from the exhaust end of the tower body is transported to the air inlet and outlet ends of the fan respectively through the first exhaust duct and the second exhaust duct, so as to improve the preheating treatment on the entire air path of the fan air supply, reduce the heat required for heating the heating wire, and realize uniform heat conduction of the heat emitted by the heating wire wound on the outer wall of the heat exchange chamber under the guidance of the heat exchange sleeve through the heat transfer oil pumped into the oil storage chamber, so that the airflow discharged from the air outlet end of the fan is fully heat exchanged in the heat exchange chamber, and then the heating wire can ensure the temperature of the air supply airflow with lower power, so as to improve the heating of the liquid flow through the circulation of the heat transfer oil and the utilization of the exhaust waste heat recovery, thereby improving the heating performance of the airflow and reducing the working power and energy consumption of the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the internal structure of a novel spray drying tower in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Reference Figure 1 As shown, the utility model proposes a novel spray drying tower, which includes: a tower body 11, an atomizer 12, a fan 13, an air supply pipeline 21, a first exhaust pipeline 22, a second exhaust pipeline 23, an oil storage chamber 31, a heat exchange sleeve 32, a heat exchange chamber 33, and a heating wire 34.

[0024] An atomizer 12 is disposed at the top of the tower body 11 , and an air inlet end is disposed at the top of the tower body 11 . The air flow transported by the air supply pipeline 21 enters into the interior of the tower body 11 through the air inlet end.

[0025] An exhaust end is arranged at the side of the tower body 11, and the first exhaust duct 22 and the second exhaust duct 23 are respectively connected to the exhaust end. Purification filters 14 are respectively arranged on the first exhaust duct 22 and the second exhaust duct 23. The first exhaust duct 22 is connected to the air inlet end of the fan 13, and the second exhaust duct 23 is connected to the air outlet end of the fan 13 and connected to the heat exchange chamber 33. The residual heat gas discharged from the exhaust end of the tower body 11 is respectively transported to the air inlet end and the air outlet end of the fan 13 through the first exhaust duct 22 and the second exhaust duct 23, so as to improve the preheating treatment on the entire air path of the fan 13 and reduce the heat required for heating the heating wire 34.

[0026] The air supply pipeline 21 is connected to the fan 13 and the heat exchange chamber 33 in sequence, and the end of the air supply pipeline 21 is connected to the air inlet end. The purification filter 14 is arranged between the heat exchange chamber 33 and the air inlet end.

[0027] The oil storage chamber 31 contains heat transfer oil, and the oil storage chamber 31 is connected to the heat exchange sleeve 32. The heat transfer oil in the oil storage chamber 31 flows in the heat exchange sleeve 32 under the driving action of the pump body. The solenoid valve 35 is connected between the oil storage chamber 31 and the heat exchange sleeve 32, and the pumping flow of the heat transfer oil can be controlled by the solenoid valve 35.

[0028] The heat exchange sleeve 32 is sleeved on the outer wall of the heat exchange chamber 33, and a heating wire 34 is connected between the heat exchange sleeve 32 and the outer wall of the heat exchange chamber 33. The heat exchange chamber 33 is heated by the heating wire 34, and the heat exchange sleeve 32 evenly distributes and conducts the heat generated by the heating wire 34.

[0029] The air outlet of the fan 13 and the second exhaust pipe 23 are connected to the heat exchange chamber 33 . The airflow delivered by the air outlet of the fan 13 and the second exhaust pipe 23 passes through the heat exchange chamber 33 and then enters the tower body 11 through the air inlet.

[0030] The heat-conducting oil pumped into the oil storage chamber 31 is used to evenly conduct the heat generated by the heating wire 34 wound on the outer wall of the heat exchange chamber 33 under the guidance of the heat exchange sleeve 32, so that the airflow discharged from the air outlet of the fan 13 can be fully heat-exchanged in the heat exchange chamber 33, and the heating wire 34 can ensure the temperature of the supply airflow with lower power, so as to improve the heating of the liquid flow through the circulation of the heat-conducting oil and the recovery of the exhaust waste heat, thereby improving the heating performance of the airflow and reducing the working power and energy consumption of the heater.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A novel spray drying tower, characterized in that: It includes: Tower body, atomizer, fan, air supply pipeline, first exhaust pipeline, second exhaust pipeline, oil storage chamber, heat exchange sleeve, heat exchange chamber, heating wire; The atomizer is arranged on the top of the tower body, and an air inlet end is arranged on the top of the tower body, and the air flow transported by the air supply pipeline enters into the interior of the tower body through the air inlet end; An exhaust end is arranged at the side of the tower body, and the first exhaust duct and the second exhaust duct are respectively connected to the exhaust ends, the first exhaust duct is connected to the air inlet end of the fan, and the second exhaust duct is connected to the air outlet end of the fan and connected to the heat exchange chamber; The air supply pipeline is connected to the fan and the heat exchange chamber in sequence, and the end of the air supply pipeline is connected to the air inlet end; The oil storage cavity contains heat transfer oil, and the oil storage cavity is connected to the heat exchange sleeve. The heat transfer oil in the oil storage cavity flows in the heat exchange sleeve under the driving action of the pump body. The heat exchange sleeve is sleeved on the outer wall of the heat exchange cavity, and the heating wire is connected between the heat exchange sleeve and the outer wall of the heat exchange cavity. The air outlet end of the fan and the second exhaust duct are commonly connected to the heat exchange cavity, and the airflow delivered by the air outlet end of the fan and the second exhaust duct passes through the heat exchange cavity and then enters into the tower body through the air inlet end.

2. The novel spray drying tower according to claim 1, characterized in that: Purification filters are respectively arranged on the first exhaust duct and the second exhaust duct.

3. The novel spray drying tower according to claim 1, characterized in that: A purification filter is arranged between the heat exchange cavity and the air inlet end.

4. The novel spray drying tower according to claim 1, characterized in that: A solenoid valve is connected between the oil storage chamber and the heat exchange sleeve.

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