CN203534106U - Multi-layer chain conveying hot air circulation drying machine - Google Patents

Abstract

The utility model discloses a multilayer chain conveying type hot air circulation dryer, which mainly includes a drying chamber, a material conveying system and an airflow heating system, and also includes an airflow circulation system, and the airflow circulation system connects the airflow heating system and the drying chamber to form a drying chamber. A circulating air flow channel, the drying chamber is provided with a conveying frame, the material conveying system is installed on the conveying frame, the material conveying system includes a conveying chain, a driving device and a plurality of trays for holding materials, the conveying chain It consists of two parallel closed chains surrounded by multiple layers of sprockets. Each tray is suspended between the two parallel closed chains through a tray suspension shaft. The drive device drives the sprocket to drive the conveyor chain to make the multi-layer material The pans circulate in the drying chamber. The multi-layer chain conveying type hot air circulation drying device of the utility model greatly saves the drying space, improves the utilization rate of the air flow, and reduces the energy consumption, and is suitable for drying agricultural products such as tomatoes, grapes, and peppers.

Description

A multi-layer chain conveying hot air circulation dryer

technical field

The utility model relates to the field of drying agricultural products, in particular to a multi-layer chain conveying type hot air circulation dryer.

Background technique

In the field of agricultural product processing, raw materials or semi-finished products can be processed and packaged after all or part of the moisture is removed through the drying process. Various dryers and drying boxes are very important equipment. The principle is to use heat or wind. The moisture in it is carried away. At present, the multi-layer dryer in the prior art is used for dehydration and drying of sheet, strip and granular materials. Its structure includes a drying chamber, a blower is installed on the lower side of the drying chamber, and a feeding device is installed on one side of the drying chamber. The lower part of the other side of the device is equipped with a discharge hopper, and the inner drying chamber is equipped with at least three layers of drying beds, and partitions are set between layers to prevent the directional flow of drying media.

The existing multi-layer belt dryer often needs to pass a long-distance transmission on the conveyor belt to dry the material, and the drying time is prolonged by multi-layer transmission, and each layer of the drying box is equipped with a There are multiple independent drying units, the drying efficiency is low and the energy consumption is large.

Utility model content

In order to solve the above technical problems, the utility model provides a multi-layer chain conveying type hot air circulation dryer, which has high drying efficiency and low energy consumption.

The purpose of the utility model is realized through the following technical solutions:

A multi-layer chain conveying type hot air circulation dryer, which mainly includes a drying chamber, a material conveying system and an airflow heating system, and also includes an airflow circulation system. The airflow circulation system connects the airflow heating system and the drying chamber to form a circulating airflow channel. The drying chamber is equipped with a conveying frame, and the material conveying system is installed on the conveying frame. The material conveying system includes a conveying chain, a driving device and a plurality of trays for holding materials. The conveying chain is closed by two parallel The chain is formed by multiple layers of sprockets, and each tray is suspended between two parallel closed chains through a tray suspension shaft. The drive device drives the sprocket to drive the conveyor chain to circulate the multi-layer trays in the drying chamber. run.

The air circulation system mainly includes a return air duct, a fan, an air outlet duct, an exhaust duct and an air inlet duct. The return air duct is located at the bottom of the drying chamber and is connected to the air inlet of the fan. and a plurality of branch pipes, each branch pipe is respectively connected with an air inlet box on the drying chamber.

The airflow heating system consists of a heating box and an airflow heating device. The airflow heating device is located inside the heating box. One end of the heating box is installed on the air outlet duct of the fan, and the other end communicates with the main air duct of the airflow circulation system.

An air flow nozzle fixing plate is installed on the top of each layer of material tray on the conveying chain, and a plurality of air flow nozzles are evenly distributed on the air flow nozzle fixing plate, and each layer of air flow nozzles corresponds to an air inlet box respectively. Airflow holes are set on the bottom of the pan to circulate the airflow in the drying chamber and the airflow circulation system.

The drying room is equipped with a temperature and humidity detection and control device.

The driving device includes a motor, a sprocket and a transmission chain.

The utility model is a multi-layer chain conveying type hot air circulation dryer. The material conveying system is changed from a belt conveying to a conveying form of a chain feeding tray, and the bottom surface of the feeding tray is evenly distributed with air holes, which is beneficial to the uniform distribution and circulation of the air in the drying chamber; The device adopts a multi-layer parallel closed chain, and the material tray can circulate in the drying room. According to the display of the temperature and humidity detection and control system, the speed of the conveying device and the cycle times of the material tray can be adjusted; the air circulation system passes the air output from the drying room through the fan. It is sent to the heating system to realize hot air circulation, reduce energy consumption, and improve hot air utilization efficiency. It is suitable for drying agricultural products such as tomatoes, grapes, and peppers.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

Fig. 1 is the structural representation of a kind of multi-layer chain conveying type hot air circulation dryer of the utility model;

Fig. 2 is a schematic cross-sectional structure diagram of a multi-layer chain conveying type hot air circulation dryer of the present invention;

Fig. 3 is a schematic diagram of tray conveying.

In Fig. 1-3: 1-drying chamber; 2-conveyor frame; 3-conveyor chain; 4-feed tray; 5-drive device; 6-airflow nozzle fixing plate; Temperature and humidity detection control device; 10-exhaust pipe; 11-main air duct; 12-branch channel; 13-heating box; 14-airflow heating device; 15-fan; 16-motor; 17-return air duct; Airflow hole; 19-feed tray suspension shaft; 20-air inlet pipe.

Detailed ways

As shown in Figures 1-3, the embodiment of the utility model is a multi-layer chain conveying hot air circulation dryer, which mainly includes a drying chamber 1, a material conveying system and an airflow heating system, and also includes an airflow circulation system. The heating system and the drying chamber 1 are connected to form a circulating air flow channel. The drying chamber 1 is provided with a conveying frame 2, and the material conveying system is installed on the conveying frame 2. The material conveying system includes a conveying chain 3, a driving device 5 and a There are multiple trays 4, and the conveyor chain 3 is formed by two parallel closed chains surrounded by multiple layers of sprockets. Each layer of conveyor chain 3 is driven by two rows of sprockets, and each tray 4 passes through a tray. The suspension shaft 19 is suspended between two parallel closed chains, the driving device 5 drives the conveying chain 3 to make the multi-layer tray 4 circulate in the drying chamber 1, and the tray 4 is always kept horizontal during the conveying process.

The air circulation system mainly includes a return air duct 17, a fan 15, an air outlet duct, an exhaust duct 10 and an air inlet duct 20. The fan 15 is driven by a motor 16, and the return air duct 17 is located at the bottom of the drying chamber 1 and connected to the air inlet of the fan 15. The air outlet duct includes a main air duct 11 and a plurality of branch ducts 12, and each branch duct 12 is connected with an air inlet box 8 on the drying chamber 1 respectively.

The airflow heating system consists of a heating box 13 and an airflow heating device 14. The airflow heating device 14 is located inside the heating box 13. One end of the heating box 13 is installed on the air outlet duct of the blower fan 15, and the other end communicates with the main air duct 11 of the airflow circulation system.

An airflow nozzle fixed plate 6 is installed on the top of each layer of material tray 4 on the conveyor chain 3, and several airflow nozzles 7 are evenly distributed on the airflow nozzle fixed plate 6, and each layer of airflow nozzle 7 corresponds to an air inlet box 8 respectively, and the material tray 4 Airflow holes are provided on the bottom surface to circulate the airflow in the drying chamber 1 and the airflow circulation system.

The drying chamber 1 is provided with a temperature and humidity detection and control device 9, and according to the display of the temperature and humidity detection and control system, the speed of the conveying device and the cycle times of the tray 4 can be adjusted.

The driving device 5 includes a motor, a sprocket and a drive chain.

When working, the material to be dried is placed on the tray 4, and the driving device 5 drives the conveyor chain 3 to make the multi-layer tray 4 circulate in the drying chamber 1, and continuously receives the hot air blown from each layer from the air inlet box. The material is dried, and the hot air flow continues to flow downward through the air hole 18 on the material tray 4, so that the hot air flow continuously flowing in from each layer finally returns to the fan through the return air duct 17 at the bottom of the drying chamber, and then passes through the air flow heating system. Heated to form a reusable hot air flow to continue the next cycle. During the working process, according to the display of the temperature and humidity detection and control system of the temperature and humidity detection and control device 9, the speed of the conveying device and the number of cycles of the tray 4 can be adjusted in real time.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, they can still understand the technical solutions described in the foregoing embodiments. Adjustment, or equivalent replacement of some of the technical features, within the spirit and principles of the utility model, any modification, equivalent replacement, improvement, etc., shall be included within the protection scope of the utility model.

Claims (6)

1. a multilayer chain conveying type hot air circulation dryer, mainly comprise hothouse, material-transporting system and air-flow heating system, it is characterized in that: also comprise airflow circulating system, described airflow circulating system is communicated with formation one circulating current passage by air-flow heating system and hothouse, in described hothouse, be provided with conveyer frames, described material-transporting system is installed on conveyer frames, material-transporting system comprises carrier chain, drive unit and for taking up a plurality of charging trays of material, described carrier chain is formed through sprocket wheel Multi-layered wound by two parallel seal chains, each charging tray hangs between two parallel seal chains by a charging tray suspended axle respectively, described drive unit drive sprocket drives carrier chain to make multilayer charging tray cycle operation in hothouse.

2. a kind of multilayer chain conveying type hot air circulation dryer according to claim 1, it is characterized in that: described airflow circulating system mainly comprises return air duct, blower fan, wind pipe, blast pipe and blast pipe, described return air duct is positioned at hothouse bottom and is connected with air inlet, described wind pipe comprises main air duct and a plurality of lateral, and each lateral is connected with the inlet box on hothouse respectively.

3. a kind of multilayer chain conveying type hot air circulation dryer according to claim 2, it is characterized in that: described air-flow heating system consists of heating cabinet and airflow heating device, described airflow heating device is positioned at heating cabinet inside, heating cabinet one end is arranged on blower fan wind pipe, and the other end is communicated with the main air duct of described airflow circulating system.

4. according to a kind of multilayer chain conveying type hot air circulation dryer described in claim 2 or 3, it is characterized in that: on described carrier chain, every layered material dish top is all provided with an air current spray nozzle fixed head, on described air current spray nozzle fixed head, be evenly equipped with several air current spray nozzles, described every layer of air current spray nozzle is corresponding with an inlet box respectively, airflow hole is offered in described charging tray bottom surface, and air-flow is circulated in hothouse and airflow circulating system.

5. a kind of multilayer chain conveying type hot air circulation dryer according to claim 4, is characterized in that: described hothouse is provided with humiture detection control apparatus.

6. a kind of multilayer chain conveying type hot air circulation dryer according to claim 1, is characterized in that: described drive unit comprises motor, sprocket wheel and driving chain.

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