CN2061084U - Continuous regulating temp. electrothermal cover - Google Patents

Abstract

The utility model provides a continuous regulating temperature electrothermal cover which relates to a device used for heating chemical substances in chemical experiments, comprising an outer cylinder, a cover ring, an electrothermal net cover, a power socket and a temperature-control circuit, wherein, the electric net cover is formed by that thermally stable fibre is knitted into a net cover shape, and fixed in the outer cylinder by the cover ring; an electrothermal wire is wound on the wall of the electrothermal net cover and wrapped by the thermally stable fibre; the gap between the outer wall of the electrothermal net cover and the inner wall of the outer cylinder is filled with the materials of insulating heat preservation; the bidirectional thyristor temperature-control circuit can continuously adjust the heating temperature of the electrothermal net cover. The utility model which has the advantages of fast elevation of temperature, uniform heating, good heat-insulating property and continuous thermoregulation is especially suitable for heating chemical substances in chemical experiments.

Description

Continuous regulating temp. electrothermal cover

The utility model relates to a kind of heater that is used for heats chemicals in chemical experiment.

In the teaching and scientific experiment of specialties such as chemistry, chemical industry, environmental protection, often need heat chemical substance.At present the heater that generally uses is alcolhol burner, Bunsen burner and electric furnace, the common drawback of these heaters be heating inhomogeneous, have naked light, heat-insulating property poor, and be difficult to realize adjust continuously heating-up temperature.

The purpose of this utility model is a kind of homogeneous heating of design, the flames of anger, good heat insulating and the device that can adjust the heats chemicals of heating-up temperature continuously.

To achieve these goals, the utility model is threaded onto the electric filament disc on the net wall that is formed by the heat resistance fiber braiding, add heat preserving and insulating material in the net periphery and be installed in the metal outer cylinder together with heat preserving and insulating material, thus constitute a kind of can be to the electric jacket of the container heating of splendid attire chemical substance.Meanwhile, adopt a two-way controllable silicon thermoregulation circuit to adjust heating-up temperature continuously.Be described in further detail below in conjunction with the technical characterictic of specific embodiment the continuous temperature adjustable electrically heated cover of the utility model.

Accompanying drawing 1 is the structural representation of continuous temperature adjustable electrically heated cover;

Accompanying drawing 2 is bidirectional triode thyristor thermoregulation circuit figure.

With reference to figure 1,2, the continuous temperature adjustable electrically heated cover of the utility model mainly is made of urceolus 1, decorative cover 2, electric heating net 3, supply socket 4 and thermoregulation circuit.Urceolus 1 is the cylindrical shape of top end opening, be made of metal, nozzle has to match with decorative cover 2 and merges the inner edge be used for fixing electric heating net 3, is mounted with two handles 5 on the outer wall of urceolus 1 symmetrically, and the tube tail band has 3 footing 6 that become equilateral triangles to distribute.Decorative cover 2 is circular, utilizes bolt to be fixed on urceolus 1 inner edge suitable for reading, and its central authorities have and are used to put into or take out the circular hole that holds the chemical substance container.Electric heating net 3 is woven into the net shape by heat resistance fiber, it is suitable for reading to be fixed on urceolus 1 inner edge suitable for reading by decorative cover 2, heating wire 7 hovers above on the net wall and by heat resistance fiber and is wrapped fruit, and an end of heating wire 7 and the zero terminal of supply socket 4 join, and the B end of the other end and thermoregulation circuit joins.Heating wire 7 is by a centre tap pilot bulb in parallel, and pilot bulb is fixed on urceolus 1 outer wall.Filling heat preserving and insulating material 8 between the outer wall of electric heating net 3 and urceolus 1 inwall has the thermometer hole 9 of through electric heating net outer wall in outer tube wall and the heat preserving and insulating material.Supply socket 4 is three end single phase poaer supply sockets, is fixed on the barrel of urceolus 1, and its fire line terminal joins through the A of fuse and thermoregulation circuit end, and an end of zero terminal and heating wire 7 joins, and the barrel of ground wire terminal and urceolus 1 joins.Thermoregulation circuit is made up of L, C1 filter circuit and control circuit of bidirectional thyristor, and control circuit of bidirectional thyristor is mainly by resistance R 1, R2, R3, potentiometer W, and capacitor C 2, neon lamp Ne and bidirectional triode thyristor are formed.In parallel with bidirectional triode thyristor after R1, R2, the C2 series connection, the contact of one end and R2, C2 linked after neon lamp Ne connected with R3, another termination bidirectional triode thyristor control utmost point.Potentiometer W is in parallel with R2, when manually adjusting potentiometer W, can adjust bidirectional triode thyristor the angle of flow and and then adjust its output voltage, to reach the purpose of continuous adjustment heating-up temperature.Thermoregulation circuit is installed in the thermoregulation circuit box, and is fixed on by the thermoregulation circuit box on the barrel of urceolus 1.

The utility model quick heating, homogeneous heating, good heat insulating, but and continuous setup heating-up temperature. Therefore, the utility model is specially adapted to heats chemicals in chemical experiment.

Claims (2)

1, a kind of electric jacket that is used for heats chemicals in chemical experiment is characterized in that it is to be made of urceolus, decorative cover, electric heating net, supply socket and thermoregulation circuit; Described urceolus is the cylindrical shape of top end opening, is made of metal, and nozzle has to match with described decorative cover and merges the inner edge be used for fixing the electric heating net, is mounted with two handles on the outer drum outer wall symmetrically, and the tube tail band has 3 footing that become equilateral triangles to distribute; Described decorative cover is circular, is fixed on the urceolus inner edge suitable for reading by bolt, and its central authorities have and are used to put into or take out the circular hole that holds the chemical substance container; Described electric heating net is woven into the net shape by heat resistance fiber, it is suitable for reading to be fixed on the urceolus inner edge suitable for reading by decorative cover, the electric filament disc is threaded onto on the net wall and by heat resistance fiber and is wrapped fruit, one end of heating wire and the zero terminal of supply socket join, the B end of the other end and thermoregulation circuit joins, heating wire is by a centre tap pilot bulb in parallel, and pilot bulb is fixed on the outer drum outer wall, filling heat preserving and insulating material between electric heating net outer wall and the outer tube inner wall; Have the thermometer hole of through electric heating net in outer tube wall and the heat preserving and insulating material; Described supply socket is three end single phase poaer supply sockets, is fixed on the outer tube wall, and its fire line terminal joins through the A of a fuse and thermoregulation circuit end, and an end of zero terminal and heating wire joins, and ground wire terminal and outer tube wall join; Described thermoregulation circuit is installed in the thermoregulation circuit box and by the thermoregulation circuit box and is fixed on the outer tube wall.

2, electric jacket according to claim 1, it is characterized in that described thermoregulation circuit is made up of LC1 filter circuit and control circuit of bidirectional thyristor, control circuit of bidirectional thyristor is made up of resistance R 1, R2, R3, potentiometer W, capacitor C 2, neon lamp Ne and bidirectional triode thyristor, in parallel after R1, R2, the C2 series connection with bidirectional triode thyristor, the contact of one end and R2, C2 linked after neon lamp Ne connected with R3, the control utmost point of another termination bidirectional triode thyristor, potentiometer W is in parallel with R2.

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