Dehumidifying dryer with high-temperature drying and low-temperature drying functions
By designing a dehumidifier containing a drying heater, a moisture absorbing cylinder and a temperature-controlled cooler, the problem of existing equipment not being able to meet both low and high temperature drying is solved, and a wide drying temperature range and energy efficiency improvement has been achieved.
Patent Information
- Application Number
- CN202421952242.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-13
AI Technical Summary
Existing plastic drying equipment cannot meet the requirements of low-temperature drying and high-temperature drying at the same time, resulting in the equipment occupying space and increasing production costs.
A dehumidifier is designed, including a drying heater, moisture absorbing cylinder and a temperature-controlled cooler. By controlling the opening and closing of the valve, the high-temperature and low-temperature drying modes are switched to avoid the ineffective waste of water, electricity and energy.
The same equipment is achieved to meet the requirements of high-temperature drying or low-temperature drying at the same time, expand the drying temperature range to 30℃~200℃, and close the control valve when no cooling water is needed to avoid energy waste, and is simple to operate, safe and reliable.
Smart Images
Figure CN222972562U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drying, in particular to a dehumidifying dryer with high-temperature drying and low-temperature drying. Background Art
[0002] At present, plastic drying equipment on the market can be divided into low-temperature drying equipment and high-temperature drying equipment according to the drying temperature. Among them, the low-temperature drying temperature is about 60°C, and the high-temperature drying temperature is about 160°C. For different application scenarios, low-temperature drying equipment or high-temperature drying equipment is used correspondingly. For injection molding manufacturers, these two types of drying equipment not only take up space but also increase production costs. Therefore, the plastic drying equipment on the market at present cannot meet the requirements of both low-temperature drying and high-temperature drying at the same time. Content of the Utility Model
[0003] In view of the deficiencies of the existing technology at present, the utility model provides a dehumidifying dryer with high-temperature drying and low-temperature drying, and avoids the ineffective waste of water and electricity energy.
[0004] To achieve the above object, the utility model provides a dehumidifying dryer with high-temperature drying and low-temperature drying, which has the following technical solutions: the dehumidifying dryer includes a drying heater and a moisture absorption cylinder, a temperature control cooler is arranged between the drying heater and the moisture absorption cylinder, the temperature control cooler is provided with a drying circulating air inlet, a drying circulating air outlet, a cooling water inlet and a cooling water outlet, the drying circulating air inlet is connected to the moisture absorption cylinder, the drying circulating air outlet is connected to the drying heater, a control valve is arranged at the cooling water inlet, when the dehumidifying dryer is in the high-temperature drying mode, the control valve is in the closed state; when the dehumidifying dryer is in the low-temperature drying mode, the control valve is in the open state, so that cooling water enters the temperature control cooler through the cooling water inlet to achieve temperature control.
[0005] Preferably, the dehumidifying dryer includes a drying circulating air passage and a regeneration circulating air passage. The exhaust port of the drying hopper, the drying filter, the drying fan, the moisture absorption cylinder, the temperature control cooler, the drying heater, and the air inlet of the drying hopper that are sequentially connected form the drying circulating air passage, and the regeneration filter, the regeneration fan, the regeneration heater, and the moisture absorption cylinder that are sequentially connected form the regeneration circulating air passage.
[0006] Preferably, both the drying cycle air passage and the regeneration cycle air passage are connected to an air cooler, the air cooler is located between the regeneration fan and the regeneration heater, and the air cooler is located between the drying filter and the air inlet end of the drying fan. The air cooler is configured to perform heat exchange between the gas in the drying cycle air passage and the gas in the regeneration cycle air passage.
[0007] Preferably, a heat exchange device is provided in the regeneration cycle air passage. The heat exchange device is provided with a moisture absorption exhaust inlet, a moisture absorption exhaust outlet, a regeneration cycle inlet, and a regeneration cycle outlet. The regeneration cycle inlet is connected to the air cooler, the regeneration cycle outlet is connected to the regeneration heater, and the moisture absorption exhaust of the moisture absorption cylinder enters the heat exchange device through the moisture absorption exhaust inlet for heat exchange and is discharged from the moisture absorption exhaust outlet.
[0008] Preferably, a first temperature control probe is provided between the drying heater and the air inlet of the drying cylinder.
[0009] Preferably, a second temperature control probe is provided between the regeneration heater and the moisture absorption cylinder.
[0010] Preferably, a temperature detection and protection device is provided in the drying cylinder.
[0011] Preferably, the control valve is an automatic control valve.
[0012] The dehumidifying dryer of the present invention with high-temperature drying and low-temperature drying can, through a temperature control cooler, meet the requirements of both high-temperature drying and low-temperature drying with the same device, expanding the drying temperature range of the dehumidifying dryer to 30°C to 200°C; when stable temperature control by cooling water is not required, the control valve can be closed to avoid ineffective waste of water and electricity energy; it is simple to operate and safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required to be used in the embodiments.
[0014] Figure 1 It is a schematic diagram of the overall structural process of the dehumidifying dryer of the present invention with high-temperature drying and low-temperature drying. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] In order to more clearly describe the technical content of the present invention, the following further describes it in combination with specific embodiments.
[0016] As Figure 1As shown in the figure, the dehumidifying dryer of the present utility model has high-temperature drying and low-temperature drying, with a drying temperature range of 30°C to 200°C, and can be freely switched between low-temperature drying and high-temperature drying modes. Among them, the dehumidifying dryer includes a drying heater 2 and a moisture absorption cylinder 6. A temperature control cooler 4 is arranged between the drying heater 2 and the moisture absorption cylinder 6. The temperature control cooler 4 is provided with a drying circulating air inlet, a drying circulating air outlet, a cooling water inlet, and a cooling water outlet. The drying circulating air inlet is connected to the moisture absorption cylinder 6, the drying circulating air outlet is connected to the drying heater 2, and a control valve 5 is arranged at the cooling water inlet. When the dehumidifying dryer is in the high-temperature drying mode, the control valve 5 is in the closed state; when the dehumidifying dryer is in the low-temperature drying mode, the control valve 5 is in the open state, so that cooling water enters the temperature control cooler 5 through the cooling water inlet to achieve temperature control, that is, to cool the low dew-point dry air coming out of the moisture absorption cylinder 6. The temperature control cooler is a water-cooled cooler, and the inlet water temperature can be adjusted with normal temperature water or chilled water to achieve low-temperature drying. When the drying temperature is greater than a certain value and cooling water is not required for stable temperature control, the control valve can be closed to avoid the ineffective waste of water and electricity energy.
[0017] The control valve 5 is preferably an automatic control valve. It can be set to open or close automatically according to the set temperature of the drying inlet air, making the whole operation simple, safe and reliable.
[0018] The dehumidifying dryer includes a drying circulating air passage and a regeneration circulating air passage. The exhaust port of the drying hopper 1, the drying filter 11 (which filters and removes dust from the dried return air from the drying hopper), the drying fan 7 (power source), the moisture absorption cylinder 6, the temperature control cooler 4, the drying heater 2, and the air inlet of the drying hopper 1 that are connected in sequence form the drying circulating air passage. The regeneration filter 9 (which filters dust in the air), the regeneration fan 10, the regeneration heater 8, and the moisture absorption cylinder 6 that are connected in sequence form the regeneration circulating air passage. Through the moisture absorption cylinder 6, low dew-point dry air can be obtained. Part of it is sent to the drying heater as drying air, and part of it is used as regeneration cooling air and returns to the moisture absorption cylinder 6 again.
[0019] Both the drying circulating air passage and the regeneration circulating air passage are connected to an air cooler 12. The air cooler 12 is located between the regeneration fan 10 and the regeneration heater 8, and the air cooler 12 is also located between the drying filter 11 and the air inlet end of the drying fan 7. The air cooler 12 is configured to exchange heat between the gas in the drying circulating air passage and the gas in the regeneration circulating air passage, so as to cool the dried return air while preheating the regeneration air.
[0020] A heat exchange device 13 is provided in the regenerative circulating air passage. The heat exchange device 13 is provided with a moisture absorption exhaust inlet, a moisture absorption exhaust outlet, a regenerative circulation inlet, and a regenerative circulation outlet. The regenerative circulation inlet is connected to the air cooler 12, and the regenerative circulation outlet is connected to the regenerative heater 8. The moisture absorption exhaust of the moisture absorption cylinder 6 enters the heat exchange device 13 through the moisture absorption exhaust inlet for heat exchange and is discharged from the moisture absorption exhaust outlet. Through the heat exchange device 13, part of the regenerative exhaust heat can be recycled.
[0021] Specifically, for the drying circuit: The drying air circulates in the drying circuit. Starting from the drying cylinder 1, the drying air sequentially passes through the drying filter 11, the air cooler 12, the drying fan 7, the moisture absorption cylinder 6, the temperature control cooler 4, the drying heater 2, and the drying cylinder 1. The heated drying air dries the materials in the drying cylinder. The drying air after passing through the materials contains moisture and dust, and can circulate and repeat the work through the aforementioned process.
[0022] For the regeneration circuit: Using the regeneration fan as the power source, the atmosphere sequentially passes through the regeneration filter 9, the regeneration fan 10, the air cooler 12, the heat exchange device 13, the regenerative heater 8, and the moisture absorption cylinder 6, which can regenerate the moisture absorption cylinder 6. The moisture adsorbed by the moisture absorption cylinder 6 from the drying air is blown out by the high-temperature regenerative air, restoring the water absorption performance of the moisture absorption cylinder 6.
[0023] A temperature detection and protection device is provided inside the drying cylinder 1 to ensure that the materials will not melt and agglomerate inside the cylinder due to excessive actual drying temperature at various drying temperatures.
[0024] A first temperature control probe 3 is provided between the drying heater 2 and the air inlet of the drying cylinder 1 for controlling the temperature of the drying inlet air to meet the drying inlet air temperature requirements of different plastic particles.
[0025] A second temperature control probe 14 is provided between the regenerative heater 8 and the moisture absorption cylinder 6 for controlling the temperature of the regenerative air.
[0026] The dehumidifying dryer of the present utility model with high-temperature drying and low-temperature drying can, through the temperature control cooler, meet the requirements of high-temperature drying or low-temperature drying with the same equipment, expanding the drying temperature range of the dehumidifying dryer to 30°C to 200°C; when stable temperature control by cooling water is not required, the control valve can be closed to avoid ineffective waste of water and electricity energy; it is simple to operate and safe and reliable.
[0027] In this specification, the present utility model has been described with reference to its specific embodiments. However, it is obvious that various modifications and variations can still be made without departing from the spirit and scope of the present utility model. Therefore, the specification and the drawings should be regarded as illustrative rather than restrictive.
Claims
1. A dehumidifying dryer with high temperature drying and low temperature drying, characterized in that: The dehumidifying dryer includes a drying heater and a moisture absorbing cylinder, a temperature-controlled cooler is arranged between the drying heater and the moisture absorbing cylinder, the temperature-controlled cooler is provided with a drying circulation air inlet, a drying circulation air outlet, a cooling water inlet and a cooling water outlet, the drying circulation air inlet is connected to the moisture absorbing cylinder, the drying circulation air outlet is connected to the drying heater, a control valve is arranged at the cooling water inlet, when the dehumidifying dryer is in a high-temperature drying mode, the control valve is in a closed state; when the dehumidifying dryer is in a low-temperature drying mode, the control valve is in an open state, so that cooling water enters the temperature-controlled cooler through the cooling water inlet to achieve temperature control.
2. The dehumidifying dryer with high temperature drying and low temperature drying according to claim 1, characterized in that: The dehumidifying dryer includes a drying circulation air passage and a regeneration circulation air passage. The exhaust port of the drying barrel, the drying filter, the drying fan, the moisture absorption barrel, the temperature control cooler, the drying heater, and the air inlet of the drying barrel connected in sequence form the drying circulation air passage. The regeneration filter, the regeneration fan, the regeneration heater, and the moisture absorption barrel connected in sequence form the regeneration circulation air passage.
3. The dehumidifying dryer with high temperature drying and low temperature drying according to claim 2, characterized in that: The drying circulation air passage and the regeneration circulation air passage are both connected to an air cooler, the air cooler is located between the regeneration fan and the regeneration heater, and the air cooler is located between the drying filter and the air inlet end of the drying fan, and the air cooler is configured to perform heat exchange between the gas in the drying circulation air passage and the gas in the regeneration circulation air passage.
4. The dehumidifying dryer with high temperature drying and low temperature drying according to claim 3, characterized in that: The regeneration circulation air passage is provided with a heat exchange device, and the heat exchange device is provided with a desiccant exhaust inlet, a desiccant exhaust outlet, a regeneration circulation inlet and a regeneration circulation outlet. The regeneration circulation inlet is connected to the air cooler, and the regeneration circulation outlet is connected to the regeneration heater. The desiccant exhaust gas of the desiccant cylinder enters the heat exchange device through the desiccant exhaust inlet for heat exchange and is discharged from the desiccant exhaust outlet.
5. The dehumidifying dryer with high temperature drying and low temperature drying according to claim 2, characterized in that: A first temperature control probe is arranged between the drying heater and the air inlet of the drying barrel.
6. The dehumidifying dryer with high temperature drying and low temperature drying according to claim 2, characterized in that: A second temperature control probe is arranged between the regeneration heater and the moisture absorbing cylinder.
7. The dehumidifying dryer with high temperature drying and low temperature drying according to claim 2, characterized in that: A temperature detection protector is arranged in the drying barrel.
8. The dehumidifying dryer with high temperature drying and low temperature drying according to any one of claims 1 to 7, characterized in that: The control valve is an automatic control valve.