CN217275224U

CN217275224U - Grain drying system with electric air valve

Info

Publication number: CN217275224U
Application number: CN202220996987.7U
Authority: CN
Inventors: 王琳玉; 潘长安; 李耀全
Original assignee: JIANGSU SIMPSON NEW ENERGY CO Ltd
Current assignee: JIANGSU SIMPSON NEW ENERGY CO Ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-08-23
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a take grain drying system of electronic blast gate belongs to heat pump drying-machine technical field, including stoving room and ash room, be equipped with the hot-blast unit of air source heat pump in the stoving room, the drying-machine, first fan and second fan, the ash room include the deposit room and with the wind mixing chamber of deposit room intercommunication, be equipped with the dust remover in the wind mixing chamber, the hot-blast unit of air source heat pump is connected with the drying-machine through first tuber pipe, first fan passes through the second tuber pipe and is connected with the deposit room, the dust remover passes through the third tuber pipe and is connected with the second fan, the second fan passes through the fourth tuber pipe and is connected with the hot-blast unit of air source heat pump, be equipped with first electronic blast gate on the wall body of wind mixing chamber. The utility model can introduce outdoor fresh air into the system when the temperature is high in summer and autumn, thus reducing the operation time of the dust removing equipment; adjusting the air quantity entering an air source heat pump hot air unit to enable the load of the unit to be in a reasonable operation interval; and the heat of the damp and hot air exhausted by the dryer is recovered, so that the energy is saved.

Description

Grain drying system with electric air valve

Technical Field

The utility model belongs to the technical field of heat pump drying-machine, concretely relates to grain drying system of electrified pneumatic valve.

Background

Grain drying equipment and technology such as air source heat pump are novel green energy-concerving and environment-protective technique, all places are all combining the area reality at the popularization in-process, positive steady orderly promotion, present drying equipment who takes air energy heat pump hot-blast unit has met good development opportunity, but because some grain drying-machine producers, the subassembly configuration is unreasonable, the drying-machine structure lags behind, lead to heat pump hot-blast unit operation unstable, easy trouble leads to shutting down, the drying-machine temperature can not carry out accurate control, not only reduce drying efficiency, and produce harmful effects to the grain quality.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: to the above-mentioned problem that exists among the prior art, the utility model aims to solve the technical problem that a grain drying system who takes electronic blast gate improves heat pump air heater unit operating stability, reduces the deviation of temperature is provided.

The technical scheme is as follows: in order to solve the technical problem, the utility model discloses a technical scheme as follows:

a grain drying system with an electric air valve comprises a drying room and an ash room, wherein an air source heat pump hot air unit, a drying machine for drying grains, a first fan for discharging damp and hot air in the drying machine and a second fan for supplying air to the air source heat pump hot air unit are arranged in the drying room, the ash chamber comprises a settling chamber and an air mixing chamber communicated with the settling chamber, a dust remover is arranged in the air mixing chamber, the air source heat pump hot air unit is connected with the dryer through a first air pipe, the first fan is connected with the settling chamber through a second air pipe, the dust remover is connected with the second fan through a third air pipe, the second fan is connected with the air source heat pump hot air unit through a fourth air pipe, and a first electric air valve for controlling external air to enter the air mixing chamber is arranged on the wall body of the air mixing chamber.

Preferably, a second electric air valve for controlling the internal flow is arranged on the fourth air pipe.

Preferably, the air source heat pump hot air unit comprises a fin evaporator and a fin condenser, and a third electric air valve is arranged at the air inlet end of the fin evaporator.

Preferably, an air valve controller is arranged in the drying room, and the first electric air valve, the second electric air valve and the third electric air valve are respectively and electrically connected with the air valve controller.

Preferably, the outer wall of the ash room is provided with a first temperature sensor electrically connected with the air valve controller, and the first air pipe is provided with a second temperature sensor electrically connected with the air valve controller.

Preferably, a plurality of baffle plates are arranged in the settling chamber, and the hot and humid air discharged by the dryer enters the air mixing chamber after being baffled and dusted by the baffle plates.

Preferably, a filter screen is arranged at the air inlet end of the first electric air valve.

Has the advantages that: compared with the prior art, the utility model has the advantages of it is following: 1. by arranging the first electric air valve, outdoor fresh air can be introduced into the system at high temperature in summer and autumn, so that the operation time of the dust removing equipment is reduced, and the operation stability of the system is improved; 2. the second electric air valve is arranged to adjust the air quantity entering the air source heat pump hot air unit, improve the stability of the air outlet temperature of the unit, reduce the overload operation condition of the unit, enable the load of the unit to be in a reasonable operation interval and enable the air outlet temperature to reach the setting requirement; 3. and the heat of the damp and hot air exhausted by the dryer is recovered, so that the energy is saved.

Drawings

Fig. 1 is a schematic top view of an embodiment of the present invention;

FIG. 2 is a schematic view of an air inlet structure of the gray room of the embodiment;

FIG. 3 is a schematic view of an air outlet structure of the ash chamber of the embodiment.

Detailed Description

The present invention will be further illustrated by the following specific examples, which are carried out on the premise of the technical scheme of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, 2 and 3, a heat pump total heat recovery grain drying system comprises a drying room 1 and an ash room 2, wherein an air source heat pump hot air unit 3, a dryer 4, a first fan 5 and a second fan 6 are arranged in the drying room 1, a settling chamber 7 positioned at a lower layer and a wind mixing chamber 8 positioned at an upper layer are arranged in the ash room 2, a dust remover 81 is arranged in the wind mixing chamber 8, and the air source heat pump hot air unit 3 comprises a fin evaporator 31 and a fin condenser 32. When the air source heat pump hot air unit 3 works, the fin condenser 32 heats passing air flow, the air source heat pump hot air unit 3 is connected with the dryer 4 through the first air pipe 91, the heated air flow enters the dryer 4 to dry grains inside, humid and hot air in the dryer 4 is discharged through the first fan 5, the first fan 5 is connected with the settling chamber 7 through the second air pipe 92, the humid and hot air with dust is sent into the settling chamber 7, a plurality of baffle plates 71 are arranged in the settling chamber 7, the humid and hot air discharged from the dryer 4 enters the settling chamber 7, and then moves forwards in a vertical deflection way under the action of the baffle plates, impurities carried in the humid and hot air are filtered through the principles of multiple turning and speed reduction, the humid and hot air after multiple self-weight settlement enters the air mixing chamber 8 after being deflected by the baffle plates 71, the dust remover 81 is arranged in the air mixing chamber 8, and the dust remover 81 adopts the existing pulse dust remover, the dust remover 81 is connected with the second fan 6 through a third air pipe 93, the air in the air mixing chamber 8 is sucked under the suction action of the second fan 6, the dust and impurities in the wet and hot air are further removed efficiently, a first electric air valve 95 is arranged on the wall body of the air mixing chamber 8, the external air enters the air mixing chamber 8 through the first electric air valve 95, the external air enters under the negative pressure action of the air mixing chamber 8 after the first electric air valve 95 is opened, the second fan 6 is connected with the air source heat pump hot air unit 3 through a fourth air pipe 94, the fourth air pipe 94 is provided with a second electric air valve 96 for controlling the internal air flow, the air flow after dust removal and the external air are mixed in the air mixing chamber 8 and then flow back into the air source heat pump hot air unit 3 under the action of the second fan 6 after the second electric air valve 96 is opened, the air flow is dehumidified by the fin evaporator 31 and then is reheated by the condenser 32, after being heated, the grain is dried in the dryer 4, and the steps are repeated in a circulating way.

As shown in fig. 1, the air source heat pump hot air unit 3 comprises a fin evaporator 31 and a fin condenser 32 (other compressor and expansion valve are not shown in the figure), the mixed air in the air mixing chamber 8 enters the air source heat pump hot air unit 3 under the action of the second fan 6, the air flow of the air outlet of the second fan 6 passes through the fin evaporator 31 (one electric air valve 97 is respectively arranged at each of the left and right air inlets) and the fin condenser 32 in parallel, the mixed air is divided into two paths, one path of the mixed air is divided into the fin evaporator 31 and the other path of the fin condenser 32, the ratio of the air flow of the fin evaporator 31 to the air flow of the fin condenser 32 is about 8: 2, the air passing through the fin evaporator 31 is cooled and dehumidified, the moisture in the air is removed, and then the air is discharged into the drying room 1 or directly discharged into the atmosphere through a chimney, the other path of the air passing through the fin condenser 32 is reheated and then enters the drying machine 4, the heating is quick, the energy consumption of the unit is reduced, and the heating effect and the heating efficiency of the unit are improved. A third electric air valve 97 and an evaporation fan 99 are arranged at the air inlet end of each fin evaporator 31, under the action of the evaporation fans 99 (the evaporation fans 99 of the two evaporators can share one air), the heat of the air in the drying room 1 is absorbed through the third electric air valve 97 (note; the two fin evaporators 31 belong to two heating systems respectively, if one fin evaporator 31 reaches a defrosting condition, the corresponding electric air valve 97 is closed, a system pipeline corresponding to the heat pump unit enters a system pipeline for switching the direction of a refrigerant to a defrosting state, and a system of the other fin evaporator 31 which does not reach the defrosting condition keeps the original heating working state).

As shown in fig. 1, 2 and 3, a wind valve controller 98 is arranged in the drying room 1, a first temperature sensor 981 electrically connected with the wind valve controller 98 is arranged at a position on the outer wall of the ash room 2 close to the first electric wind valve 95, the first temperature sensor 981 is used for measuring the outdoor air temperature, a second temperature sensor 982 electrically connected with the wind valve controller 98 is arranged on the first wind pipe 91, the second temperature sensor 982 is used for measuring the outlet air temperature of the air source heat pump hot air unit 3, the first electric wind valve 95, the second electric wind valve 96 and the third electric wind valve 97 are respectively and electrically connected with the wind valve controller 98, the wind valve controller 98 adopts the existing PLC controller, the opening degrees of the plurality of electric wind valves are controlled according to the temperature signals of the first temperature sensor 981 and the second temperature sensor 982, the valve body of the first electric wind valve 95 is fully opened in summer when the high temperature, the opening degree of the first electric wind valve 95 is partially opened or even not opened in spring and autumn when the low temperature, the air inlet end of the first electric air valve 95 is provided with a filter screen 951 for primary filtration of outdoor air, and the air enters return air of the air source heat pump hot air unit 3 from the outside of a factory building through the first electric air valve 95 in summer, and all or part of the return air is clean fresh air outside the factory building, so that the energy waste of the operation of dust removal equipment is reduced; the second electric air valve 96 regulates the air quantity entering the air source heat pump hot air unit 3, if the heating quantity of the air source heat pump hot air unit 3 is constant, the air inlet quantity is small by controlling the opening degree of the second electric air valve 96, the air outlet temperature is high, otherwise, the air inlet quantity is large, the air outlet temperature is low, and under the condition that the main machine runs full load, if the set air outlet temperature can not be reached, the setting requirement can be met by regulating the opening degree of the second electric air valve 96; the third electric air valve 97 realizes defrosting of the evaporation fan without deceleration, one part of the evaporator is defrosted, and the other part of the evaporator participates in heating, so that the heating energy efficiency of the air-source heat pump air heater is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A grain drying system with an electric air valve is characterized by comprising a drying room (1) and an ash room (2), wherein an air source heat pump hot air unit (3), a drying machine (4) used for drying grains, a first fan (5) used for discharging damp and hot air in the drying machine (4) and a second fan (6) used for supplying air into the air source heat pump hot air unit (3) are arranged in the drying room (1), the ash room (2) comprises a settling chamber (7) and a air mixing chamber (8) communicated with the settling chamber (7), a dust remover (81) is arranged in the air mixing chamber (8), the air source heat pump hot air unit (3) is connected with the drying machine (4) through a first air pipe (91), the first fan (5) is connected with the settling chamber (7) through a second air pipe (92), and the dust remover (81) is connected with the second fan (6) through a third air pipe (93), the second fan (6) is connected with the air source heat pump hot air unit (3) through a fourth air pipe (94), and a first electric air valve (95) used for controlling external air to enter the air mixing chamber (8) is arranged on the wall body of the air mixing chamber (8).

2. The grain drying system with the electric air valve as claimed in claim 1, wherein a second electric air valve (96) for controlling an internal flow rate is provided on the fourth air duct (94).

3. The grain drying system with the electric air valve as claimed in claim 2, wherein the air source heat pump hot air unit (3) comprises a fin evaporator (31) and a fin condenser (32), and the air inlet end of the fin evaporator (31) is provided with a third electric air valve (97).

4. The grain drying system with the electric air valve as claimed in claim 3, wherein a wind valve controller (98) is arranged in the drying room (1), and the first electric air valve (95), the second electric air valve (96) and the third electric air valve (97) are respectively electrically connected with the wind valve controller (98).

5. The grain drying system with the electric air valve according to claim 4, wherein a first temperature sensor (981) electrically connected with the air valve controller (98) is arranged on the outer wall of the ash chamber (2), and a second temperature sensor (982) electrically connected with the air valve controller (98) is arranged on the first air pipe (91).

6. The grain drying system with the electric air valve as claimed in claim 1, wherein a plurality of baffle plates (71) are arranged in the settling chamber (7), and hot and humid air exhausted by the dryer (4) enters the air mixing chamber (8) after being baffled and dusted by the baffle plates (71).

7. The grain drying system with the electric air valve as claimed in claim 1, wherein a filter screen (951) is arranged at the air inlet end of the first electric air valve (95).