CN214223566U - Silica gel particle ultralow-water-content high-temperature heat pump drying system - Google Patents
Silica gel particle ultralow-water-content high-temperature heat pump drying system Download PDFInfo
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- CN214223566U CN214223566U CN202120288832.3U CN202120288832U CN214223566U CN 214223566 U CN214223566 U CN 214223566U CN 202120288832 U CN202120288832 U CN 202120288832U CN 214223566 U CN214223566 U CN 214223566U
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Abstract
The utility model relates to an ultralow moisture content high temperature heat pump drying system of silica gel granule belongs to silica gel granule stoving processing technology field, including dry storehouse, the vacuum that keeps dry storehouse vacuum state takes place the mechanism and provides the heat pump stoving mechanism of the inside stoving environment in dry storehouse, above-mentioned vacuum takes place mechanism and dry storehouse intercommunication, above-mentioned heat pump stoving mechanism is including being located the inside condenser in dry storehouse, the pipe and the exit tube that advance of this condenser all pass behind the dry storehouse wall with the compressor, expansion valve and evaporimeter are established ties for solve among the prior art because of silica gel granule drying efficiency hangs down and is unfavorable for continuous production's technical problem.
Description
Technical Field
The utility model relates to a silica gel granule ultralow moisture content high temperature heat pump drying system belongs to silica gel granule stoving processing technology field.
Background
After the silica gel is granulated, the water content is generally about 80%, the silica gel needs to be dried until the water content is not more than 1%, and the drying is generally completed by two procedures, wherein the water content is reduced from 80% to below 1%. At present, the drying of second process is very low because of final moisture content requirement, and the stoving degree of difficulty is great, adopts the electrical heating mode mostly, and the heat time is longer, and the energy consumption is very high, and about 500 degrees electricity of per ton product energy consumption, greatly reduced drying efficiency, manufacturing cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists provides a silica gel granule ultralow moisture content high temperature heat pump drying system for solve among the prior art because of the silica gel granule drying efficiency low and be unfavorable for continuous production's technical problem.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides an ultralow moisture content high temperature heat pump drying system of silica gel granule, includes dry storehouse, keeps the vacuum of dry storehouse vacuum state to take place the mechanism and provide the heat pump stoving mechanism of the inside stoving environment in dry storehouse, and above-mentioned vacuum takes place the mechanism and dry storehouse intercommunication, and above-mentioned heat pump stoving mechanism is including being located the inside condenser in dry storehouse, and the inlet tube and the exit tube of this condenser are established ties with compressor, expansion valve and evaporimeter after all passing dry storehouse wall.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the evaporator comprises an inner evaporator and an outer evaporator which are installed in parallel, the inner evaporator is installed with an electromagnetic valve a in series, and the outer evaporator is installed with an electromagnetic valve b in series.
Further, the vacuum generating mechanism comprises a water ring vacuum pump, and an inlet of the water ring vacuum pump is communicated with the top of the drying bin after being connected with a heat exchange channel of the inner evaporator in series.
Further, the outlet of the water ring vacuum pump is connected with a process water tank in series.
Furthermore, a feed hopper is arranged at the top of the drying bin, and a discharge hopper is arranged at the bottom of the drying bin.
Further, vacuum valve b is installed in series between the feed hopper and the drying bin, vacuum valve a is installed at the inlet of the feed hopper, vacuum valve c is installed in series between the discharge hopper and the drying bin, and vacuum valve d is installed at the outlet of the discharge hopper.
Furthermore, a thermometer is arranged in the drying bin, and the vacuum valve a, the vacuum valve b, the vacuum valve c and the vacuum valve d adopt manual valves or electromagnetic valves.
Further, the inlets of the inner evaporator and the outer evaporator are both provided with one-way valves.
The utility model has the advantages that: the vacuum degree in the drying bin is improved by arranging the vacuum generating mechanism, so that the boiling point of moisture in the material in the drying bin is reduced, and the condenser is arranged in the drying bin, so that the effect of heating silica gel is achieved by utilizing the condensation and heat release of the refrigeration working medium in the condenser, and the drying efficiency is improved; by arranging the inner evaporator and the outer evaporator, the refrigerating working medium in the inner evaporator is used for evaporating and absorbing the heat of the water vapor from the drying bin, the heat is cooled to be water, then the heat is used for heating materials to maintain the evaporation of water, the refrigerating working medium in the outer evaporator is used for evaporating and absorbing the heat in the ambient air, the heat is used for heating the materials, the heat energy is recycled, and the energy consumption is reduced; by arranging the water ring vacuum pump, condensed water obtained after water vapor pumped out of the drying bin is liquefied is discharged to the process water tank for recycling, no waste gas is discharged, no secondary pollution is caused, and the effects of energy conservation and emission reduction are achieved; through setting up feeder hopper and play hopper to and vacuum valve a, vacuum valve b, vacuum valve c and vacuum valve d, realize that the material need not be with the help of external forces such as air, stirring, rely on gravity autonomous formula to move from top to bottom in dry storehouse, save running device and energy consumption, be favorable to keeping the sealed requirement of the vacuum drying in the dry storehouse simultaneously, in addition, realized going on in succession of vacuum drying, need not batch production, showing and improving production efficiency, satisfy the production demand.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
In the figure, 1, a drying bin, 2, a feed hopper, 3, a discharge hopper, 5, a condenser, 6, an inner evaporator, 7, an outer evaporator, 8, a compressor, 9, an expansion valve, 10, an electromagnetic valve a, 11, an electromagnetic valve b, 12, a water ring vacuum pump, 13, a process water tank, 4-1, a vacuum valve a, 4-2, a vacuum valve b, 4-3, a vacuum valve c, 4-4 and a vacuum valve d are arranged.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Referring to the attached figure 1, a silica gel particle ultralow water content high temperature heat pump drying system comprises a drying bin 1 for storing and drying silica gel particles, a vacuum generating mechanism for keeping the drying bin 1 in a vacuum state and a heat pump drying mechanism for providing a drying environment in the drying bin 1, wherein the vacuum generating mechanism is arranged to improve the vacuum degree in the drying bin 1 and further reduce the boiling point of moisture in materials in the drying bin 1, a condenser 5 is arranged in the drying bin 1 to condense and release heat by using a refrigeration working medium in the condenser 5 so as to play a role of heating silica gel, thereby improving the drying efficiency, an air inlet of the vacuum generating mechanism is communicated with the drying bin 1, the heat pump drying mechanism comprises a condenser 5 positioned in the drying bin 1, an inlet pipe and an outlet pipe of the condenser 5 are connected with a compressor 8, an expansion valve 9 and an evaporator in series after penetrating through the wall of the drying bin 1, the compressor 8 absorbs low-temperature low-pressure working medium steam of an evaporator, compresses the low-temperature low-pressure working medium steam into high-temperature high-pressure working medium steam, discharges the high-temperature high-pressure working medium steam to the condenser 5, the expansion valve 9 converts high-temperature high-pressure working medium liquid into low-temperature low-pressure working medium gas-liquid mixture, the evaporator comprises an inner evaporator 6 and an outer evaporator 7 which are installed in parallel, the inner evaporator 6 is installed with an electromagnetic valve a10 in series, the outer evaporator 7 is installed with an electromagnetic valve B11 in series, one-way valves are installed at inlets of the inner evaporator 6 and the outer evaporator 7, a pipeline A formed by connecting the inner evaporator 6 with the one-way valve and the electromagnetic valve a10 in series is connected with a pipeline B formed by connecting the outer evaporator 7 with the one-way valve and the electromagnetic valve B11 in series, the inner evaporator 6 and the outer evaporator 7 are arranged, the refrigeration working medium in the inner evaporator 6 is used for evaporating and absorbing heat of the water steam from the drying bin 1, the heat is cooled into water, and then the heat is used for maintaining water evaporation, the refrigeration working medium of the outer evaporator is used for evaporating and absorbing heat in ambient air, so that the temperature of the material is raised, the heat energy is recycled, and the energy consumption is reduced.
The vacuum generating mechanism comprises a water ring vacuum pump 12, an inlet of the water ring vacuum pump is communicated with the top of the drying bin 1 after being connected with a heat exchange channel of the inner evaporator 6 in series, an outlet of the water ring vacuum pump 12 is connected with a process water tank 13 in series, and condensed water obtained after water vapor pumped out of the drying bin 1 is liquefied is discharged to the process water tank 13 through the arrangement of the water ring vacuum pump 12 and is recycled, so that the waste gas emission and secondary pollution are avoided, and the energy-saving and emission-reducing effects are achieved.
The drying device is characterized in that a feeding hopper 2 for vacuum feeding of silica gel is mounted at the top of the drying bin 1, a discharging hopper 3 for vacuum discharging of silica gel is mounted at the bottom of the drying bin 1, a vacuum valve b4-2 is mounted between the feeding hopper 2 and the drying bin 1 in series, a vacuum valve a4-1 is mounted at the inlet of the feeding hopper 2, a vacuum valve c4-3 is mounted between the discharging hopper 3 and the drying bin 1 in series, a vacuum valve d4-4 is mounted at the outlet of the discharging hopper 3, a thermometer for detecting the temperature in the bin is arranged in the drying bin 1, and a manual valve or an electromagnetic valve is adopted for the vacuum valve a4-1, the vacuum valve b4-2, the vacuum valve c4-3 and the vacuum valve d4-4, and the feeding hopper 2 and the discharging hopper 3, the vacuum valve a4-1, the vacuum valve b4-2, the vacuum valve c4-3 and the vacuum valve d4-4 are arranged to realize that the materials do not need air, External forces such as stirring rely on gravity autonomous form to move from top to bottom in dry storehouse 1, save running device and energy consumption, are favorable to keeping the sealed requirement of the vacuum drying in dry storehouse 1 simultaneously, in addition, have realized going on in succession of vacuum drying, need not produce in batches, are showing and are improving production efficiency, satisfy the production demand.
A control method of a silica gel particle ultralow-water-content high-temperature heat pump drying system comprises the following steps: s1: feeding: opening a vacuum valve a4-1, feeding the material into a feed hopper 2 until the material is full, then closing a vacuum valve a4-1, opening a vacuum valve b4-2, and feeding the material into a drying bin 1 from the feed hopper 2; s2: and (3) heating: setting the material level of the materials in the drying bin 1, closing the electromagnetic valve a10, opening the electromagnetic valve b11, starting the compressor 8, the condenser 5, the outer evaporator 7 and the expansion valve 9, absorbing heat in ambient air by the compressor 8, transmitting the heat to the materials through the condenser 5, and finishing the temperature rise when the temperature of the materials is raised to a set value; s3: and (3) drying: starting a water ring vacuum pump 12, pumping the interior of the drying bin 1 to a set vacuum degree, starting evaporation when the moisture in the material reaches a boiling point, opening an electromagnetic valve a10, closing an electromagnetic valve b11, stopping an outer evaporator 7, enabling a refrigerant to enter an inner evaporator 6 to absorb the heat of steam in the drying bin 1, sending a high-temperature refrigerant to a condenser 5 through a compressor 8, continuously heating and feeding the refrigerant, maintaining the evaporation of the moisture in the material, pumping the steam in the drying bin 1 to the inner evaporator 6 through the water ring vacuum pump 12 for heat exchange, liquefying the steam, and recovering condensed water to a process water tank 13; s4: discharging: and (3) drying the materials in the drying bin 1 until the moisture content meets the requirement, opening the vacuum valve c, enabling the materials in the drying bin 1 to enter the discharge hopper 3 until the materials are full, closing the vacuum valve c4-3, opening the vacuum valve d4-4, discharging the materials in the discharge hopper 3, closing the vacuum valve d4-4, and finishing discharging.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The utility model provides a silica gel granule ultralow moisture content high temperature heat pump drying system which characterized in that: the vacuum drying device comprises a drying bin, a vacuum generation mechanism for keeping the vacuum state of the drying bin and a heat pump drying mechanism for providing a drying environment in the drying bin, wherein the vacuum generation mechanism is communicated with the drying bin, the heat pump drying mechanism comprises a condenser positioned in the drying bin, and an inlet pipe and an outlet pipe of the condenser are connected in series with a compressor, an expansion valve and an evaporator after penetrating through the wall of the drying bin.
2. The system of claim 1, wherein the system comprises: the evaporator comprises an inner evaporator and an outer evaporator which are installed in parallel, the inner evaporator is installed with an electromagnetic valve a in series, and the outer evaporator is installed with an electromagnetic valve b in series.
3. The system of claim 2, wherein the system comprises: the vacuum generating mechanism comprises a water ring vacuum pump, and an inlet of the water ring vacuum pump is communicated with the top of the drying bin after being connected with a heat exchange channel of the inner evaporator in series.
4. The system of claim 3, wherein the system comprises: the outlet of the water ring vacuum pump is connected with a process water tank in series.
5. The system of claim 1, wherein the system comprises: the top of the drying bin is provided with a feed hopper, and the bottom of the drying bin is provided with a discharge hopper.
6. The system of claim 5, wherein the system comprises: vacuum valve b is installed in series between feeder hopper and the dry storehouse, vacuum valve a is installed to the import of feeder hopper, vacuum valve c is installed in series between play hopper and the dry storehouse, vacuum valve d is installed to the export of play hopper.
7. The system of claim 6, wherein the system comprises: a thermometer is arranged in the drying bin, and the vacuum valve a, the vacuum valve b, the vacuum valve c and the vacuum valve d adopt manual valves or electromagnetic valves.
8. The system of claim 3, wherein the inlets of the inner evaporator and the outer evaporator are both provided with check valves.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120288832.3U CN214223566U (en) | 2021-02-02 | 2021-02-02 | Silica gel particle ultralow-water-content high-temperature heat pump drying system |
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| CN202120288832.3U CN214223566U (en) | 2021-02-02 | 2021-02-02 | Silica gel particle ultralow-water-content high-temperature heat pump drying system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880313A (en) * | 2021-02-02 | 2021-06-01 | 烟台明辉热泵节能科技有限公司 | Silica gel particle ultralow-water-content high-temperature heat pump drying system and control method |
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- 2021-02-02 CN CN202120288832.3U patent/CN214223566U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880313A (en) * | 2021-02-02 | 2021-06-01 | 烟台明辉热泵节能科技有限公司 | Silica gel particle ultralow-water-content high-temperature heat pump drying system and control method |
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