Energy-saving dehumidifying and drying system

Abstract

The utility model relates to the technical field of plastic dehumidifying and drying machines, and discloses an energy-saving dehumidifying and drying system which comprises a precision filter, a molecular sieve dehumidifier, a drying air feeder, an efficient heat exchanger, an energy-saving heater, a filtering type dust remover and a raw material heat preservation barrel. The molecular sieve dehumidifier is used for reaction to obtain low-dew-point dry air, then the low-dew-point dry air is conveyed to the energy-saving heater through the dry air feeder to be heated, and then the heated high-temperature low-dew-point dry air enters the raw material heat preservation barrel to heat raw materials in the raw material heat preservation barrel. The method comprises the following steps of: feeding hot air into an energy-saving heater to drive moisture in the raw materials, separating dust in the hot air by virtue of a filter type dust remover, discharging moisture by virtue of a moisture outlet in the filter type dust remover, and recycling heat of the separated hot air by virtue of a high-efficiency heat exchanger to preheat low-dew-point dry air which just enters the energy-saving heater; hot air recycling is achieved, and energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic dehumidification drying machine technical field, concretely is a kind of energy-saving dehumidification drying system. BACKGROUND

[0002] The existing dehumidification drying machine usually adopts honeycomb rotating wheel mode to dry plastic raw materials, but the dehumidification drying machine of honeycomb rotating wheel mode needs high-temperature regeneration, which can cause high overall power of equipment, large energy waste, and no suitable way to detect and feedback drying effect during drying process, so as to effectively power intelligent allocation, cause the drying process to maintain large power output, cause energy waste, and even cause raw material over-drying and plastic caking and other over-temperature drying phenomena. SUMMARY

[0003] The utility model discloses a kind of energy-saving dehumidification drying systems to solve the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: an energy-saving dehumidification drying system, comprising: precision filter, molecular sieve dehumidifier, drying air blower, high-efficiency heat exchanger, energy-saving heater, filter-type dust collector and raw material heat preservation barrel;

[0005] The precision filter output end is connected with the molecular sieve dehumidifier input end by pipeline, the molecular sieve dehumidifier output end is connected with the drying air blower first input end by pipeline, the drying air blower output end is connected with the high-efficiency heat exchanger first input end by pipeline, the high-efficiency heat exchanger first output end is connected with the energy-saving heater input end by pipeline, the energy-saving heater output end is connected with the raw material heat preservation barrel by pipeline, the raw material heat preservation barrel top is connected with the filter-type dust collector input end by pipeline, the filter-type dust collector output end is connected with the high-efficiency heat exchanger second input end by pipeline, and the high-efficiency heat exchanger second output end is connected with the drying air blower second input end by pipeline.

[0006] The raw material heat preservation barrel side is equipped with electric control box, and the electric control box is electrically connected with the precision filter, molecular sieve dehumidifier, drying air blower, high-efficiency heat exchanger, energy-saving heater and filter-type dust collector respectively.

[0007] The precision filter input end is connected with external air compressor.

[0008] The pipeline between the molecular sieve dehumidifier and the drying air blower is equipped with flow regulating valve, and the flow regulating valve is electrically connected with the electric control box.

[0009] The pipeline between the energy-saving heater output end and the raw material heat preservation barrel extends to the bottom of the inside of the raw material heat preservation barrel.

[0010] The pipeline between the top of the raw material heat preservation barrel and the filter type dust collector input end is provided with a temperature sensor, and the electric control box is electrically connected with the temperature sensor.

[0011] The bottom of one side of the filter type dust collector is provided with a moisture outlet.

[0012] Compared with the prior art, the energy-saving dehumidifying and drying system has the advantages that:

[0013] The high-pressure air is filtered through the precision filter, then the filtered high-pressure air is reacted through the molecular sieve dehumidifier to obtain low-dew-point dry air, then the low-dew-point dry air is sent to the energy-saving heater through the dry air blower for heating, then the high-temperature low-dew-point dry air after heating enters the raw material heat preservation barrel to heat the raw material in the raw material heat preservation barrel and drive the moisture in the raw material, then the hot air containing moisture is separated from dust through the filter type dust collector, the moisture is discharged through the moisture outlet on the filter type dust collector, then the separated hot air is subjected to heat recovery through the high-efficiency heat exchanger to preheat the low-dew-point dry air entering the energy-saving heater, so that the hot air is recycled and used, and the energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a system structure schematic view of the utility model.

[0015] In the figure: 1, precision filter;2, molecular sieve dehumidifier;3, flow regulating valve;4, dry air blower;5, high-efficiency heat exchanger;6, energy-saving heater;7, filter type dust collector;8, temperature sensor;9, raw material heat preservation barrel;10, electric control box. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0017] Please refer to Figure 1 The utility model provides a technical scheme: an energy-saving dehumidifying and drying system, which comprises a precision filter 1, a molecular sieve dehumidifier 2, a dry air blower 4, a high-efficiency heat exchanger 5, an energy-saving heater 6, a filter type dust collector 7 and a raw material heat preservation barrel 9.

[0018] The input end of the precision filter 1 is connected with an external air compressor, the external air compressor compresses air into high-pressure air and sends the high-pressure air into the precision filter 1, and the high-pressure air is filtered by the precision filter 1.

[0019] The output end of the precision filter 1 is connected with the input end of the molecular sieve dehumidifier 2 through a pipeline, the output end of the molecular sieve dehumidifier 2 is connected with the first input end of the dry air blower 4 through a pipeline, the output end of the dry air blower 4 is connected with the first input end of the high-efficiency heat exchanger 5 through a pipeline, the first output end of the high-efficiency heat exchanger 5 is connected with the input end of the energy-saving heater 6 through a pipeline, the output end of the energy-saving heater 6 is connected with the raw material heat preservation barrel 9 through a pipeline, the top of the raw material heat preservation barrel 9 is connected with the input end of the filter dust collector 7 through a pipeline, the output end of the filter dust collector 7 is connected with the second input end of the high-efficiency heat exchanger 5 through a pipeline, and the second output end of the high-efficiency heat exchanger 5 is connected with the second input end of the dry air blower 4 through a pipeline; one side of the raw material heat preservation barrel 9 is provided with an electric control box 10, the electric control box 10 is electrically connected with the precision filter 1, the molecular sieve dehumidifier 2, the dry air blower 4, the high-efficiency heat exchanger 5, the energy-saving heater 6 and the filter dust collector 7 respectively, and the electric control box 10 is used for controlling the working of the precision filter 1, the molecular sieve dehumidifier 2, the dry air blower 4, the high-efficiency heat exchanger 5, the energy-saving heater 6 and the filter dust collector 7 respectively.

[0020] The high-pressure air is filtered by the precision filter 1, then the filtered high-pressure air is reacted by the molecular sieve dehumidifier 2 to obtain low-dew-point dry air, then the low-dew-point dry air is heated by the energy-saving heater 6 through the dry air blower 4, then the high-temperature low-dew-point dry air is sent into the raw material heat preservation barrel 9 to heat the raw material in the raw material heat preservation barrel 9 and drive the internal moisture of the raw material, then the hot air containing moisture is separated from dust by the filter dust collector 7, the moisture in the hot air is discharged through the moisture outlet of the filter dust collector 7, then the separated hot air is used for heat recovery by the high-efficiency heat exchanger 5 to preheat the low-dew-point dry air entering the energy-saving heater 5, so that the hot air is recycled and the energy consumption is reduced.

[0021] The pipeline between the molecular sieve dehumidifier 2 and the dry air blower 4 is provided with a flow regulating valve 3, the flow regulating valve 3 is electrically connected with the electric control box 10, and the flow of the low-dew-point dry air entering the dry air blower 4 can be adjusted by the flow regulating valve 3.

[0022] The pipeline between the output end of the energy-saving heater 6 and the raw material heat preservation barrel 9 extends to the bottom of the inside of the raw material heat preservation barrel 9, so that the low-dew-point dry air sent into the raw material heat preservation barrel 9 by the energy-saving heater 6 enters the bottom of the raw material heat preservation barrel 9, then the low-dew-point dry air flows upwards to heat the raw material in the raw material heat preservation barrel 9 and drive the internal moisture of the raw material.

[0023] Wherein, the pipeline between the top of raw material heat preservation barrel 9 and the input end of filter type dust collector 7 is provided with temperature sensor 8, and electric control box 10 is electrically connected with temperature sensor 8, so that the temperature of the moisture-containing hot air flowing out of raw material heat preservation barrel 9 can be monitored through temperature sensor 8, when the temperature value monitored by temperature sensor 8 exceeds the set threshold value (the threshold value is 60 DEG C), it indicates that the raw materials in raw material heat preservation barrel 9 are basically dried, and the flow regulating valve 3 can be adjusted to reduce the inflow of low dew point dry air.

[0024] Wherein, the bottom of one side of filter type dust collector 7 is provided with a moisture outlet, and the moisture-containing hot air passes through filter type dust collector 7 to separate the dust in the hot air, and the moisture is discharged through the moisture outlet on filter type dust collector 7.

[0025] Working principle: in use, first, the air compressor is connected to compress the air into high-pressure air and sent to the precision filter 1, then the high-pressure air is filtered through the precision filter 1, then the filtered high-pressure air is reacted through the molecular sieve dehumidifier 2 to obtain low-dew-point dry air, then the low-dew-point dry air is sent to the energy-saving heater 6 through the dry air blower 4 for heating, then the high-temperature low-dew-point dry air after heating enters the raw material heat preservation barrel 9 to heat the raw materials in the raw material heat preservation barrel 9, and then the moisture-containing hot air passes through the filter type dust collector 7 to separate the dust in the hot air, and the moisture is discharged through the moisture outlet on the filter type dust collector 7, then the separated hot air is heat-recovered through the high-efficiency heat exchanger 5 to preheat the low-dew-point dry air just entering the energy-saving heater 5, realize the heat recovery and utilization of hot air, so that the high-efficiency energy-saving drying of raw materials is realized.

[0026] Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.

Claims

1. An energy efficient dehumidifying drying system, characterized by, The utility model relates to a kind of energy-saving and high-efficiency air supply systems, including: The precision filter (1) output is connected with the molecular sieve dehumidifier (2) input by pipeline, the molecular sieve dehumidifier (2) output is connected with the dry air supply machine (4) first input by pipeline, the dry air supply machine (4) output is connected with the high-efficiency heat exchanger (5) first input by pipeline, the high-efficiency heat exchanger (5) first output is connected with the energy-saving heater (6) input by pipeline, the energy-saving heater (6) output is connected with the raw material heat preservation barrel (9) by pipeline, the raw material heat preservation barrel (9) top is connected with the filter dust collector (7) input by pipeline, the filter dust collector (7) output is connected with the high-efficiency heat exchanger (5) second input by pipeline, the high-efficiency heat exchanger (5) second output is connected with the dry air supply machine (4) second input by pipeline; The raw material heat preservation barrel (9) side is equipped with electric control box (10), and the electric control box (10) is electrically connected with the precision filter (1), molecular sieve dehumidifier (2), dry air supply machine (4), high-efficiency heat exchanger (5), energy-saving heater (6) and filter dust collector (7) respectively. The precision filter (1) input is connected with external air compressor.

2. The energy efficient dehumidifying and drying system according to claim 1, wherein: Flow regulating valve (3) is equipped on the pipeline between the molecular sieve dehumidifier (2) and the dry air supply machine (4), and the flow regulating valve (3) is electrically connected between the electric control box (10).

3. The energy efficient dehumidifying and drying system according to claim 1, wherein: The pipeline between the energy-saving heater (6) output and the raw material heat preservation barrel (9) extends to the bottom of the inside of the raw material heat preservation barrel (9).

4. The energy efficient dehumidifying and drying system according to claim 1, wherein: Temperature sensor (8) is equipped on the pipeline between the raw material heat preservation barrel (9) top and the filter dust collector (7) input, and the electric control box (10) is electrically connected with the temperature sensor (8).

5. The energy efficient dehumidifying and drying system according to claim 1, wherein: The bottom of the filter dust collector (7) side is equipped with moisture exhaust port.

6. The energy-saving dehumidification and drying system according to claim 1, characterized in that: ​

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