CN208186851U - air heater - Google Patents

Abstract

Air heater volume in the prior art is big, the inaccurate technical problem of temperature control in order to solve for the utility model, provide a kind of air heater, including cylinder and temperature control box, the inner cavity of cylinder is provided with several electric heating tube sum number row W type pipes, inwardly the aluminum water of intracavitary filling melting, aluminum water are frozen into the outside that aluminium packet is attached to W type pipe and electric heating tube；The top of cylinder has mutually independent inlet plenum and outlet chamber, and two ports of W type pipe are respectively inserted in inlet plenum and outlet chamber.The copper pipe of connection inlet plenum and outlet chamber turns to W type, copper pipe can not only be reduced in the intracorporal area occupied of cylinder, reduce the volume of air heater, additionally it is possible to increase gas circuit in a limited space, the heating time of air is increased, so that air heating is more evenly.

Description

Air heater

Technical field

The utility model belongs to sand core casting technology field, and in particular to a kind of core making machine, in particular for core making machine In to triethylamine heating air heater.

Background technique

Triethylamine method cold core box technique, that is, phenolic urethane technique is answered at present in cold core box core process method With widest one kind, it is developed in nineteen sixty-eight.Its core manufacturing craft process is that I component is added by processing compound in quantitative roughing sand The Bicomponent binder of phenolic resin and II component polyisocyanate, be mixed in sand mixer it is even after obtain cold core sand, using penetrating Core machine consolidation is into core box.It is carrier by quantitative vaporization with dry high temperature air or nitrogen etc. again by gas heater Triethylamine catalyst is blown into core box by air blowing plate, by Bicomponent binder hydroxyl and isocyanide acid catalysis become urethane and hard Change, obtains the sand core that there is some strength, meet technique requirement.

But existing gas heater is sufficiently bulky, and it can only be external outside core making machine, it cannot be integrated in core making machine.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of compact, temperature control, accurately air is heated Device.

In order to achieve the above objectives, the technical solution of the utility model is as follows:

Air heater, including cylinder and temperature control box, the inner cavity of the cylinder are provided with several electric heating tube sum number row W types Pipe, to the aluminum water of the interior intracavitary filling melting, aluminum water is frozen into aluminium packet and is attached to the outer of the W type pipe and the electric heating tube Side；The top of the cylinder has mutually independent inlet plenum and outlet chamber, and two ports of the W type pipe are respectively inserted in In the inlet plenum and outlet chamber.

Further, the interior intracavitary thermocouple being additionally provided with for detecting temperature of the cylinder, the thermocouple dress In one section of temperature tube, the bottom of the temperature tube is secured with hush panel.

Further, being enclosed with heat-preservation cotton on the barrel of the cylinder.

Further, the inlet plenum and outlet chamber are each provided with two ports, two ports are located at chamber The front and back end of room.

Further, the temperature control box is mounted on the top of the cylinder.

Further, the electric heating tube and temperature tube are vertically inserted in the inner cavity of the cylinder, the electric heating tube It is located in the temperature control box with the top of temperature tube.

For the utility model in use, being passed through dry air into inlet plenum, the indoor air of inlet chamber enters W type Pipe, air flow to outlet chamber after being heated to 80 DEG C in W type pipe, the indoor high temperature air of outlet chamber blows to triethylamine surface It is allowed to vaporize, the Triethylamine gas of formation, which mixes with air, to be entered back into sand core model.

Compared with prior art, the utility model has the beneficial effects that

1. connection inlet plenum and the copper pipe of outlet chamber turn to W type, copper pipe can not only be reduced and accounted for cylinder is intracorporal With area, the volume of air heater is reduced, additionally it is possible to increase gas circuit in a limited space, when increasing the heating of air Between, so that air heating is more evenly；

2. the object of heating tube heating is aluminium, W type pipe is heated evenly in aluminium, and air heats also more evenly；

3. using the temperature of thermocouple detection aluminium, and then the temperature of air is detected, when the temperature of aluminium reaches preset temperature, Electric cabinet controls heater and stops heating.

Detailed description of the invention

It, below will be to existing skill in order to illustrate more clearly of the technical solution in the utility model prior art and embodiment Attached drawing needed in art and embodiment description is briefly described.

Fig. 1 is the structural schematic diagram of automatic assembling mechanism disclosed in embodiment；

Fig. 2 is the structural schematic diagram of hold-down mechanism disclosed in embodiment；

Fig. 3 is mounting structure schematic diagram of the motor end cap in automatic assembling mechanism disclosed in embodiment.

Specific embodiment

The technical solution of the utility model is further described below in conjunction with attached drawing 1, attached drawing 2 and attached drawing 3.

Referring to air heater shown in attached Fig. 1 and 2 comprising cylinder 1 and the temperature control box 2 being mounted at the top of cylinder, cylinder The inner cavity of body is provided with several electric heating tubes 3 and the thermocouple for detecting temperature, and thermocouple is surveyed in one section of temperature tube 5 The bottom of warm pipe is secured with hush panel, and electric heating tube and temperature tube are vertically inserted in the cavity of the barrel, electric heating tube and temperature tube Top be located in temperature control box.The inner cavity of cylinder is provided with number row's W type pipe 7, inwardly the aluminum water of intracavitary filling melting, aluminum water solidification The outside of W type pipe and electric heating tube is attached at aluminium packet.The top of cylinder has mutually independent inlet plenum 8 and outlet chamber Two ports of 9, W type pipes are respectively inserted in inlet plenum and are connected to two chambers in outlet chamber.In application, to inlet plenum It is inside passed through dry air, the indoor air of inlet chamber enters W type pipe, and air flows to out after being heated to 80 DEG C in W type pipe Gas chamber, the indoor high temperature air of outlet chamber blow to triethylamine surface and are allowed to vaporize, and the Triethylamine gas of formation mixes with air It enters back into sand core model.

Heat-preservation cotton 10 is enclosed on the barrel of cylinder, it is more energy saving to prevent the heat losses of inner barrel.

Inlet plenum and outlet chamber are each provided with two ports 6, and two ports are located at the front and back end of chamber, but its In a port secured.Port is all arranged in the front and back end of inlet plenum and outlet chamber, and such air heater can be placed Any position in core making machine, it is more general.

Various modifications to these embodiments will be readily apparent to those skilled in the art, herein The General Principle for moving justice can be real in other embodiments without departing from the spirit or scope of the present utility model It is existing.Therefore, the present invention will not be limited to the embodiments shown herein, and be to fit to it is disclosed herein Principle and the consistent widest scope of features of novelty.

Claims (6)

1. air heater, which is characterized in that including cylinder and temperature control box, the inner cavity of the cylinder is provided with several electric heating tubes Sum number arrange W type pipe, to it is described it is interior it is intracavitary filling melting aluminum water, aluminum water be frozen into aluminium packet be attached to the W type pipe and it is described electricity plus The outside of heat pipe；The top of the cylinder has mutually independent inlet plenum and outlet chamber, two ports of the W type pipe It is respectively inserted in the inlet plenum and outlet chamber.

2. air heater according to claim 1, which is characterized in that the interior of the cylinder intracavitary is additionally provided with for examining The thermocouple of testing temperature, in one section of temperature tube, the bottom of the temperature tube is secured the thermocouple with hush panel.

3. air heater according to claim 2, which is characterized in that be enclosed with heat-preservation cotton on the barrel of the cylinder.

4. air heater according to claim 3, which is characterized in that the inlet plenum and outlet chamber are each provided with Two ports, two ports are located at the front and back end of chamber.

5. air heater according to claim 4, which is characterized in that the temperature control box is mounted on the top of the cylinder Portion.

6. air heater according to claim 5, which is characterized in that the electric heating tube and temperature tube are vertically inserted in institute It states in the inner cavity of cylinder, the top of the electric heating tube and temperature tube is located in the temperature control box.