CN216169981U - Spray drier convenient to preheat feed liquid - Google Patents

Abstract

The utility model belongs to the field of dryers, and particularly relates to a spray dryer convenient for preheating feed liquid, which comprises: the feed liquid preheating device, the drying device connected with the feed liquid preheating device and the separating device connected with the drying device are arranged on the feed liquid preheating device; the hot gas output by the separation device is conveyed into a feed liquid preheating device for preliminary preheating, and the feed liquid preheating device comprises a shell, a first feeding pipeline, an air outlet pipeline, a second feeding pipeline, a preheating pipeline positioned in the shell, a temperature sensor and a heating wire wrapped on the preheating pipeline; and when the temperature measured by the temperature sensor is lower than the standard, the heating wire starts to heat the preheating pipeline. The utility model can preheat the feed liquid in advance, accelerate the drying speed of the dryer and improve the yield.

Description

Spray drier convenient to preheat feed liquid

Technical Field

The utility model relates to the field of dryers, in particular to a spray dryer convenient for preheating feed liquid.

Background

The spray dryer convenient for preheating the feed liquid is a continuous normal-pressure dryer, sprays the feed liquid into a mist shape by using special equipment, leads the mist to be contacted with hot air and dried, is used for drying some heat-sensitive liquid, suspension and viscous liquid, and is also used for drying fuel, intermediates, soap powder, inorganic salt and the like; however, the spray dryer convenient for preheating the feed liquid in the market at present adopts a drying device to directly dry the atomized feed liquid, does not preheat the feed liquid, and has a relatively slow drying speed.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the problem of current desiccator directly dry the atomizing feed liquid, do not preheat the feed liquid is solved.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a spray dryer convenient to preheat feed liquid includes: the liquid preheating device, the drying device connected with the liquid preheating device and the separating device connected with the drying device; the hot gas output by the separation device is conveyed into a feed liquid preheating device for preliminary preheating, and the feed liquid preheating device comprises a shell, a first feeding pipeline, an air outlet pipeline, a second feeding pipeline, a preheating pipeline positioned in the shell, a temperature sensor and a heating wire wrapped on the preheating pipeline; wherein, the temperature measured by the temperature sensor is lower than the standard, and the heating wire starts to heat the preheating pipeline.

Furthermore, the drying device comprises a drying main machine, an air inlet pipeline positioned on the side wall of the drying main machine, an atomizer positioned at the top of the drying main machine, and a first discharge pipeline connected with the bottom of the drying main machine; wherein the atomizer atomizes the feed liquid; the air inlet pipeline conveys hot air to the drying main machine to dry and atomize the feed liquid.

Furthermore, the separation device comprises a cyclone separator, a bag filter, a first gas transmission pipeline connected with the cyclone separator and the bag filter, a second discharge pipe and a third discharge pipeline which are respectively connected with the lower ends of the cyclone separator and the bag filter; the cyclone separator is adapted to perform a first separation of a mixture of solids and gas, which is conveyed via a first gas line to a bag filter for a second separation.

Furthermore, the separation device also comprises a second gas pipeline, and the second gas pipeline is connected with the shell of the feed liquid preheating device and the bag filter and is used for conveying hot gas output from the bag filter into the shell.

Furthermore, the preheating pipeline is formed by connecting a plurality of straight pipes and bent pipes which are arranged on the same plane, so that the feed liquid in the same plane is heated more uniformly.

Further, the temperature sensor is located near the air outlet pipeline inside the shell, and when the temperature measured by the temperature sensor is lower than 60 ℃, the heating wire starts to heat.

Further, the second feeding pipeline is connected with the atomizer and is suitable for conveying the preheated feed liquid to the atomizer for atomization.

The utility model has the beneficial effects that: the spray dryer convenient for preheating the feed liquid further utilizes the hot gas output from the separating device under the mutual matching of the feed liquid preheating device, the drying device and the separating device, and conveys the hot gas into the feed liquid preheating device to preheat the feed liquid in advance, thereby shortening the drying time of the feed liquid in the drying device and further improving the production yield of the dryer.

Drawings

The utility model is further illustrated by the following figures and examples.

FIG. 1 is a schematic diagram of a spray dryer that facilitates preheating of feed liquid;

FIG. 2 is a cross-sectional view of the feed preheating device of FIG. 1;

FIG. 3 is a schematic view of the structure of the drying apparatus

Fig. 4 is a schematic view of the structure of the separation device.

In the figure:

a spray dryer 100 for preheating the feed liquid;

the feed liquid preheating device comprises a feed liquid preheating device 1, a shell 11, a first feeding pipe 12, an air outlet pipeline 13, a second feeding pipeline 14, a preheating pipeline 15, a heating wire 16 and a temperature sensor 17;

the drying device 2, a drying host 21, an air inlet pipeline 22, an atomizer 23, a water outlet 24, a water outlet pipeline 24 and a first discharge pipeline 25;

the separation device 3, the cyclone separator 31, the bag filter 32, the second discharge pipeline 33, the third discharge pipeline 34, the first gas pipeline 35 and the second gas pipeline 36;

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present embodiment provides a spray dryer 100 for preheating feed liquid, including: a feed liquid preheating device 1, a drying device 2 connected with the feed liquid preheating device 1, and a separating device 3 connected with the drying device 2. The feed liquid preheating device 1 is suitable for preheating input feed liquid, is connected with the drying device 2 through a second feeding pipeline 14, and conveys the preheated feed liquid to the drying device 2, wherein the drying device 2 is suitable for drying the dried feed liquid to form a solid and gas mixture, is connected with the separation device 3 through a first discharging pipeline 25, conveys the dried product into the separation device 3, and the separation device 3 is suitable for separating the solid and the gas in the solid and gas mixture and outputting the product; through the spray dryer 100 convenient to preheat the feed liquid can realize preheating in advance the dry feed liquid, shortens drying time.

Specifically, as shown in fig. 1 and fig. 2, the feed liquid preheating device 1 includes a housing 11, a first feed pipe 12 located above the left side surface of the housing 11, an air outlet pipe 13 located at the top left side of the housing 11, a second feed pipe 14 located at the bottom right side of the housing, a preheating pipe 15 located inside the housing 11 and connected to the first feed pipe 12 and the second feed pipe 14, heating wires 16 wrapping the surface of the preheating pipe 15, and a temperature sensor 17 located inside the housing and close to the air outlet pipe 13; the first feeding pipe 12 is connected with one end of the preheating pipeline 15, feed liquid enters the preheating pipeline 15 through the first feeding pipe 12, and the preheating pipeline 15 is formed by connecting a plurality of straight pipes and bent pipes which are arranged on the same plane, so that the feed liquid in the same plane can be heated more uniformly; the gas outlet pipeline 13 can be connected with a condensing device; the temperature sensor 17 is adapted to measure the temperature in the vicinity of the outlet pipe 13, and when the temperature in the vicinity of the outlet pipe 13 is below 60 degrees celsius, the heating wire 16 is operated to heat the preheating pipe 25.

Specifically, as shown in fig. 1 and 3, the drying device 2 includes a main drying machine 21, an air inlet duct 22 connected to a cylindrical side surface of the main drying machine, an atomizer 23 located at a top position of the main drying machine 11, a water discharge duct 24 connected to a bottom of the main drying machine 21, and a first discharge duct 25 connected to a bottom of the main drying machine 21; the drying main machine 21 consists of a cylinder and a cone, and the bottom of the cone is connected with a first discharge pipeline 25 suitable for outputting a dried product; the air inlet pipeline 22 is connected with one side of the cylinder part and used for conveying hot air at the temperature of about 80 ℃ into the drying main machine 21 and exchanging heat with atomized liquid drops in the drying main machine 21 so that the atomized liquid drops are quickly evaporated to form particles; the atomizer 23 is arranged at the top of the drying main machine 21 and connected with the bottom end of the second feeding pipeline 14, and is suitable for atomizing the feed liquid output from the second feeding pipeline 14, so that the surface area of the feed liquid is increased, and drying is accelerated.

Specifically, as shown in fig. 1 and 4, the separation device 3 includes a cyclone separator 31, a bag filter 32, a second discharge pipe 33, a third discharge pipe 34, a second gas transmission pipe 36, and a first gas transmission pipe 35 connecting the cyclone separator 31 and the bag filter 32; the cyclone separator 31 consists of a cylinder and a cone, the cyclone separator 31 is connected with the drying main machine 21 through a first discharge pipeline 25, and a product dried in the drying main machine 21 enters the cyclone separator 31 through the first discharge pipeline 25 to perform first separation of a solid-gas mixture; the second discharging pipeline 33 is positioned at the bottom of the cone of the cyclone separator 31, and the particles dried in the cyclone separator 31 are discharged to the product through the second discharging pipeline 33; one end of the first gas pipeline 35 is connected to the top of the cyclone separator 31, the other end of the first gas pipeline 35 is connected to the side of the bag filter 32, and a solid and gas mixture containing a small amount of particles in the cyclone separator 31 enters the bag filter 32 through the first gas pipeline 35 for secondary filtration; the third discharging pipeline 34 is positioned at the bottom of the bag filter 32, and the dried particles in the cyclone separator 31 are output again through the third discharging pipeline 34; the second gas transmission pipeline 36 is connected with the bag filter 32 and the shell 11, and hot air suitable for output is input into the feed liquid in the shell 11 through the second gas transmission pipeline 36 for preheating.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

In light of the foregoing description of preferred embodiments in accordance with the utility model, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (7)

1. The utility model provides a spray drier convenient to preheat feed liquid which characterized in that includes: the feed liquid preheating device, the drying device connected with the feed liquid preheating device and the separating device connected with the drying device are arranged on the feed liquid preheating device; the hot gas output by the separation device is conveyed into a feed liquid preheating device for preliminary preheating, and the feed liquid preheating device comprises a shell, a first feeding pipeline, an air outlet pipeline, a second feeding pipeline, a preheating pipeline positioned in the shell, a temperature sensor and a heating wire wrapped on the preheating pipeline; wherein, the temperature measured by the temperature sensor is lower than the standard, and the heating wire starts to heat the preheating pipeline.

2. The spray dryer convenient for feed liquid preheating of claim 1, wherein the drying device comprises a main drying machine, an air inlet pipeline positioned on the side wall of the main drying machine, an atomizer positioned at the top of the main drying machine, and a first discharge pipeline connected with the bottom of the main drying machine; wherein the atomizer atomizes the feed liquid; the air inlet pipeline conveys hot air to the drying main machine to dry and atomize the feed liquid.

3. The spray dryer convenient for feed liquid preheating of claim 1, wherein the separation device comprises a cyclone separator, a bag filter, a first gas transmission pipeline connecting the cyclone separator and the bag filter, a second discharge pipe and a third discharge pipeline respectively connected to the lower ends of the cyclone separator and the bag filter; the cyclone separator is adapted to perform a first separation of a mixture of solids and gas, which is conveyed via a first gas line to a bag filter for a second separation.

4. The spray dryer that facilitates preheating of a feed liquid of claim 3, wherein the separation device further comprises a second gas line that connects the housing of the feed liquid preheating device and the bag filter and that transports hot gas output from the bag filter into the housing.

5. The spray dryer convenient for preheating feed liquid according to claim 1, wherein the preheating pipeline is formed by connecting a plurality of straight pipes and bent pipes which are arranged on the same plane, so that the feed liquid in the same plane is heated more uniformly.

6. The spray dryer facilitating preheating of feed liquid of claim 1, wherein the temperature sensor is located near an air outlet pipe inside the housing, and the heating wire starts to heat when the temperature measured by the temperature sensor is lower than 60 ℃.

7. The spray dryer that facilitates preheating feed liquid of claim 1, wherein the second feed line is coupled to an atomizer and adapted to convey preheated feed liquid to the atomizer for atomization.

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