A kind of combined padding and drying system that has electic protection
Technical field
The utility model relates to combined padding and drying system, a kind of specifically combined padding and drying system that has electic protection.
Background technology
Traditional combined padding and drying system includes baking vanish chamber and the heating cabinet that is interconnected.Be provided with the combustion chamber in the heating cabinet; Install combustion device in the combustion chamber; Heating cabinet one end is provided with another opposite end of air intlet and is provided with circulating fan and escape pipe, and the combustion chamber is to the air heat in the heating cabinet, after the air after the heating passes the screen pack that is horizontally set with in heating cabinet; It is indoor finally to provide power to be sent to baking vanish through escape pipe by circulating fan; End near the air inlet pipe of heating cabinet also is provided with the return duct that is communicated with the baking vanish chamber, flow back into through this return duct at the indoor hot-air after heat exchange of baking vanish again and continues heating in the heating cabinet, forms a hydronic air circulation system.
Electic protection for combined padding and drying system; Only circulating fan and burner are carried out manual order start and stop in the prior art,, temperature long-time superelevation etc. unusual for the blower fan belt that possibly occur has the situation of damage not have corresponding mechanism for monitoring and counter-measure to equipment; In addition, the volatile matter benzene during paint drying, xylenes etc. belong to inflammable and explosive substances, if can not in time detect, very easily cause serious consequences such as combined padding and drying system blast.
The utility model content
The technical problem that the utility model will solve provides a kind of combined padding and drying system that has electic protection, and this combined padding and drying system has wind pressure monitoring function, combustible gas monitoring, alarming function, high temperature alarm function, and whole combined padding and drying system simple in structure, control conveniently, safe and reliable.
For solving the problems of the technologies described above, the utility model comprises heating cabinet and baking vanish chamber, establishes the combustion chamber in the heating cabinet; Burner is installed in the combustion chamber; One end of heating cabinet is offered air intlet, and the other end of heating cabinet is provided with circulating fan and is communicated to the indoor escape pipe of baking vanish, and the heating cabinet middle part is provided with the hot-air filter; End near air intlet on the heating cabinet is provided with the return duct that is communicated with the baking vanish chamber; Its design feature is in the circulating fan position circulating fan differential pressure pickup of monitoring circulating fan pressure reduction into and out of the air port to be installed on the said heating cabinet, at hot-air filters locations place the filter differential pressure pickup of monitoring filter both sides pressure reduction is installed on the heating cabinet, and the heating cabinet temperature sensor is installed in the heating cabinet; Baking vanish room temperature sensor is installed in the baking vanish chamber; The combustible gas detecting sensor also is installed in the baking vanish chamber, and the signal output part of each sensor all is electrically connected on the controller, this controller control start and stop circulating fan and burner.
Be communicated with gas pipeline on the said burner, the combustion gas electrically-controlled valve is installed on the gas pipeline, the control end of combustion gas electrically-controlled valve is electrically connected on the controller.Connecting on the gas pipeline has air delivery pipe, and combustion fan is installed on the air delivery pipe.
Opened the waste discharge mouth on the roof of said baking vanish chamber, be communicated with the waste discharge pipeline on the waste discharge mouth, the waste discharge electrically-controlled valve that is electrically connected on the controller has been installed on the waste discharge pipeline and passes through the waste discharge blower fan that controller is controlled start and stop.
On the air inlet of said combustion fan and on the air intlet of heating cabinet fresh air filter is installed all.
Said fresh air filter is a panel air filter, and the hot-air filter is the pocket type air cleaner.
Said controller is the PLC controller.
The beneficial effect of the utility model is: the circulating fan differential pressure pickup can be monitored the pressure reduction of circulating fan into and out of the air port in real time; When circulating fan causes it unusually pressure reduction exceeds standard into and out of the air port; The circulating fan differential pressure pickup sends alarm signal and gives controller; Burner and circulating fan are closed in controller control, have avoided heat in the heating cabinet accumulated; The filter differential pressure pickup can be monitored the blast of hot-air filter both sides in real time; When the hot-air filter causes the pressure reduction of its both sides to exceed standard because of obstruction; The filter differential pressure pickup sends alarm signal and gives controller, and controller can take corresponding measure or callwork personnel to overhaul; Being provided with of temperature sensor can be monitored heating cabinet and the indoor temperature of baking vanish in real time, when temperature exceeding standard, sends alarm signal and gives controller, and burner is closed in controller control and the callwork personnel take measures; Being provided with of combustible gas detecting sensor can be monitored the indoor combustable gas concentration of baking vanish in real time, when concentration over-standard, sends alarm signal and gives controller, and controller is taken measures and the callwork personnel; Burner adopts gas burner; Combustion fan is set to be delivered to air and combustion gas in the combustion chamber simultaneously and burns; Make burning more abundant, being provided with of combustion gas electrically-controlled valve made things convenient for controller automatically gas flow to be controlled, thereby controls heating cabinet and the indoor temperature of baking vanish indirectly; Waste discharge mouth and waste discharge pipeline are used to discharge indoor pernicious gas of baking vanish and volatile matter, and the waste discharge electrically-controlled valve is set on the waste discharge pipeline, through controller it are controlled automatically, save manpower, and be easy to use; But the airborne impurity of fresh air filter filtering has guaranteed to get into the air cleaner in combustion chamber and the heating cabinet; Fresh air filter adopts panel air filter; The hot-air filter adopts the pocket type air cleaner; Through two-layer different filters air is carried out two-layer filtration, further guaranteed to get into the cleaning of the indoor air of baking vanish, reduced the influence of impurity the baking vanish effect; And two-layer filtration is simple, and is with low cost; Controller adopts the PLC controller, and is simple in structure, controls reliable and with low cost.The utility model has been realized circulating fan wind pressure monitoring function, baking vanish indoor combustible gas monitoring, alarming function and high temperature alarm function, and whole combined padding and drying system is simple in structure, control conveniently, safe and reliable.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain:
Fig. 1 is the structural representation of the utility model.
The specific embodiment
For representing that conveniently, the A arrow indicates fresh air among Fig. 1; The B arrow indicates fuel gas, is preferably natural gas.
With reference to Fig. 1; A kind of embodiment of the utility model is for comprising heating cabinet 1 and baking vanish chamber 2; Establish combustion chamber 10 in the heating cabinet 1, burner 17 is installed in the combustion chamber 10, an end of heating cabinet 1 is offered air intlet 11; The other end of heating cabinet 1 is provided with circulating fan 12 and the escape pipe 3 that is communicated in the baking vanish chamber 2; Heating cabinet 1 middle part has been horizontally set with hot-air filter 13, and the end near air intlet 11 on the heating cabinet 1 is provided with the return duct 4 that is communicated with baking vanish chamber 2, and the circulating fan differential pressure pickup 14 of monitoring circulating fan pressure reduction into and out of the air port is installed in circulating fan 12 positions on the heating cabinet 1; The filter differential pressure pickup 15 of monitoring filter both sides pressure reduction is installed in hot-air filter 13 positions on the heating cabinet 1; Heating cabinet temperature sensor 16 is installed in the heating cabinet 1, baking vanish room temperature sensor 21 is installed in the baking vanish chamber 2, combustible gas detecting sensor 22 also is installed in the baking vanish chamber 2; The signal output part of each sensor all is electrically connected on the controller 5, these controller 5 control start and stop circulating fans 12 and burner 17.Wherein, baking vanish chamber 2 usefulness with place the workpiece 9 that needs baking vanish.Circulating fan differential pressure pickup 14 is used for monitoring in real time the pressure reduction of circulating fan into and out of the air port; When circulating fan 12 causes it unusually pressure reduction exceeds standard into and out of the air port; Circulating fan differential pressure pickup 14 sends alarm signal and gives controller 5; Burner 17 and circulating fan 12 are closed in controller 5 controls, avoid heat in heating cabinet 1 accumulated.Filter differential pressure pickup 15 is used for monitoring in real time the blast of hot-air filter 13 both sides; When hot-air filter 13 causes the pressure reduction of its both sides to exceed standard because of obstruction; Filter differential pressure pickup 15 sends alarm signal and gives controller 5, and controller 5 can take corresponding measure or callwork personnel to overhaul.Heating cabinet temperature sensor 16 is respectively applied for the temperature in real-time monitoring heating cabinet 1 and the baking vanish chamber 2 with baking vanish room temperature sensor 21; When temperature exceeding standard; Send alarm signal and give controller 5, burner 17 is closed in controller 5 controls and the callwork personnel take measures.Being provided for of combustible gas detecting sensor 22 monitored the combustable gas concentration in the baking vanish chamber 2 in real time, when concentration over-standard, sends alarm signal and gives controller 5, and controller 5 is taken measures and the callwork personnel.
With reference to Fig. 1, burner 17 adopts gas burner, is communicated with gas pipeline on the burner 17, and combustion gas electrically-controlled valve 6 is installed on the gas pipeline, and the control end of combustion gas electrically-controlled valve 6 is electrically connected on the controller 5.Connecting on the gas pipeline has air delivery pipe, and combustion fan 7 is installed on the air delivery pipe.As shown in the figure; Combustion chamber 10 is communicated with radiator 18; Air in the heating cabinet 1 is through radiator 18 abundant heat exchange intensifications, is communicated to through flue on the radiator 18 and is located at heating cabinet 1 external heated case chimney 19, and the flue gas behind the fuel gas buring is discharged in the atmosphere through heating cabinet chimney 19.Combustion fan 7 is used for air and combustion gas be sent in the combustion chamber 10 simultaneously and burns; Being provided with of combustion gas electrically-controlled valve 6 made things convenient for controller 5 automatic transport combustion gas, preferably adopts flow control valve, when temperature is higher than setting value; Can suitably turn down gas flow through controller 5; When temperature is lower than setting value, can suitably heightens gas flow through controller 5, thereby reach the purpose of temperature in the indirect control baking vanish chamber 2.
With reference to Fig. 1, opened waste discharge mouth 20 on the roof of baking vanish chamber 2, be communicated with the waste discharge pipeline on the waste discharge mouth 20, the waste discharge electrically-controlled valve 23 that is electrically connected on the controller 5 is installed on the waste discharge pipeline and passes through the waste discharge blower fan 24 that controller 5 is controlled start and stop.The overhanging end of waste discharge pipeline is communicated with baking vanish chamber chimney 25.Waste discharge mouth 20 is used to discharge pernicious gas and the volatile matter in the baking vanish chamber 2 with the waste discharge pipeline, and unwanted volatile finally is discharged in the atmosphere through baking vanish chamber chimney 25.Waste discharge electrically-controlled valve 23 is set on the waste discharge pipeline, it is controlled automatically through controller 5.
With reference to Fig. 1, on the air inlet of combustion fan 7 and on the air intlet 11 of heating cabinet 1 fresh air filter 8 is installed all.Fresh air filter 8 is used for the airborne impurity of filtering, guarantees to get into the air cleaner in combustion chamber 10 and the heating cabinet 1.Fresh air filter 8 as shown in Figure 1 is a panel air filter, and hot-air filter 13 is the pocket type air cleaner.Air in the entering baking vanish chamber 2 pass through the filtration of panel air filter and pocket type air cleaner respectively, and its cleannes are higher, to guarantee the baking vanish effect.
Wherein, the signal of above-mentioned 5 pairs of each sensors of controller is managed concentratedly and each blower fan and electrically-controlled valve and burner is controlled automatically, and it preferably adopts the PLC controller.Signal processing circuit and control circuit in the controller 5 are prior art circuits, repeat no more at this.
When the utility model uses; Controller 5 is at first controlled and is opened waste discharge electrically-controlled valve 23, ON cycle blower fan 12 and waste discharge blower fan 24, with intrasystem air circulation repeatedly; Discharge after harmful paint volatile matter; Close waste discharge electrically-controlled valve 23 and waste discharge blower fan 24, open combustion gas electrically-controlled valve 6 and burner 17, carry out the baking vanish operation.After baking vanish finished, because temperature is still very high in the system, controller 5 control earlier cut out combustion gas electrically-controlled valve 6 and burner 17, and waste discharge electrically-controlled valve 23 and waste discharge blower fan 24 are opened in control then, and when equitemperature was reduced to setting value, controller 5 stopped whole system.