CN101734843B

CN101734843B - Bent-tube heating furnace

Info

Publication number: CN101734843B
Application number: CN2008101621282A
Authority: CN
Inventors: 姜伏波; 徐巨洪
Original assignee: JIANGSHAN FEIPUS ILLUME CO Ltd
Current assignee: Sanyou Electronics Co., Ltd., Jiangshan, Zhejiang
Priority date: 2008-11-24
Filing date: 2008-11-24
Publication date: 2013-02-13
Anticipated expiration: 2028-11-24
Also published as: CN101734843A

Abstract

The invention provides a bent-tube heating furnace for heating and softening when a straight tube is processed into a spiral tube by bending in energy-saving lamp manufacture. The conventional heating furnace has a heating wire structure, temperature distribution of a heating bath of the heating furnace is not uniform; the inside of the heated and softened straight tube easily generates stress, which has the defects of tube explosion and chronic gas leak; and the heating wire has difficult temperature control and high power consumption, and is easily burnt out if the heating wire is used continuously to affect production. The invention provides the bent-tube heating furnace with heating convenience, accurate temperature control, good production continuity and high yield aiming at the defects, which comprises a furnace body with a bilayer structure and a heating cavity, wherein the furnace body is coupled with a furnace cover; the bilayer structure is a graphite layer with a U-shaped section and an insulating layer coated outside the graphite layer; and the heating cavity is a heating groove which is formed by the U-shaped concave part of the graphite layer and is provided with two openings at two ends. By heating and softening the straight tube by the bent-tube furnace, the treated straight tube cannot easily generate stress in the tube so as to eliminate the hidden danger of tube explosion and chronic gas leak.

Description

Bent-tube heating furnace

[technical field]

The present invention relates to the spiral energy conservation tube manufacturing machine, particularly a kind of bent-tube heating furnace that thermoplastic is used when the straight tube bending process becomes spiral tube.

[background technology]

Its structure of the process furnace that existing power saving fluorescent lamps is used comprises a body of heater with cover, set up the heating tank that electric stove wire consists of an open at both ends with refractory mortar in the body of heater, clamp the straight tube two ends with pipe clamp during heating, the pipe shaft of straight tube is suspended in covers bell in the heating tank, to the electric stove wire energising with the thermoplastic straight tube.Electric stove wire in this process furnace is plate-like and twines, and is gapped, so temperature distributing disproportionation is even in the heating tank, excess Temperature makes easily straight tube soften and is attached in the stove, whole heating inequality more can cause the inner stress that produces of straight tube, has bombing, leaks hidden danger slowly, greatly reduces product percent of pass; Electric stove wire temperature control difficulty, power consumption is large, and use is easily blown continuously, affects continuous production, reduces production capacity; The effect of refractory mortar is to set up the support electric stove wire, very easily adheres to straight tube in the fast use of refractory mortar heat conduction, and is unfavorable to producing.

[summary of the invention]

The technical assignment of the technical problem to be solved in the present invention and proposition is, provide that a kind of heating is convenient, temperature control is accurate, the bent-tube heating furnace that continuous production is good, production capacity is high, by this bend pipe stove to the straight tube thermoplastic, be difficult for producing the pipe internal stress, the hidden danger of eliminating bombing and leaking slowly.

The present invention adopts following technical scheme: bent-tube heating furnace, comprise that a bilayer structure is with the body of heater of heating chamber, be connected with a bell on the body of heater, it is characterized in that described bilayer structure is the graphite linings in U-shaped cross section and is wrapped in the outer thermal insulation layer of graphite linings, heating chamber is the heating tank that the U-shaped female parts of graphite linings forms, described heating tank open at both ends.The present invention utilizes the graphite heating heating element to be set and to increase thermal insulation layer, graphite linings continuous distribution gapless, temperature distribution is more even, and graphite heat conducting speed and speed of cooling are all very fast, be convenient to be adjusted to and add the required adaptive temperature of thermal ampoule element, overcome slow, the uneven defective of being heated of temperature adjustment that the high power electric furnace silk brings slowly because of heat conduction and speed of cooling, can also avoid the electric stove wire fracture of wire disadvantageous effect to producing; Straight tube is heated evenly in heating tank and is difficult for producing stress, and the bombing hidden danger and the slow burst that do not have stress to cause fall into, and fluorescent tube also is difficult for softening being attached in the stove during heat.

Thermal insulation layer described in the present invention is the glass fibre material.The glass fibre heat conduction efficiency is high, helps to conduct graphite linings and sends out heat thermogenetic and be incubated.

Bell described in the present invention is connecting one can drive the cylinder of uncapping that it rotates around pivoted connection end.Utilize high pressure gas to step on and step on handle for the air cylinder driven of propulsion source has overcome the artificial pin of existing bell utilization, use the mechanical linkage transmission to open and close the defective that bell is wasted time and energy, help to enhance productivity, increase production capacity.

Body of heater described in the present invention is fixed on the base, the base bottom extends to form long-armed, long-armed top connects a flat-removing air cyclinder, top sheave and lower sheave are housed on long-armed from top to bottom, the long-armed the other end is articulated in an end of a pivoted arm, the pivoted arm the other end connects a lift cylinder, and the pivoted arm middle part is connected on the rotating stand and can rotates around the rotating fulcrum that connects; Described upper and lower pulley lays respectively in the sliding ways and glide path that vertically arranges on the locating part, described sliding ways sealing two ends, be comprised of vertical slideway and the camber line slideway that is communicated with vertical slideway bottom, glide path is the vertical slideway of a sealing two ends, and locating part is fixed on the support.Described pulley is fixed pulley, during work, lift cylinder drives pivoted arm and rotates around fulcrum, can drive the long-armed end of pivoted arm connection moves up and down, flat-removing air cyclinder drives the long-armed process furnace that can drive and does translational movement, and by the position-limiting action that upper and lower pulley and corresponding upper and lower slideway cooperate, the control bent-tube heating furnace is done specific lifting and translational movement in the localized area, satisfy the mobile needs of body of heater in producing, running fix is stable, accurate.Cylinder is made drive source, and not only power saving, installation, maintenance are changed also easily quick, help to cut down finished cost.

The long-armed of base bottom extension described in the present invention is a pair of, locating part consists of over against the isostructure plate by being fixed on the support two, have the chute corresponding to sliding ways and glide path on two plates, a pair of long-armed being sandwiched between two plates, the top sheave of described long-armed upper installation and lower sheave are positioned at the respective slide slots on the plate.Locating part is made of two plates and clamps a pair of long-armed of base, stressed evenly, the body of heater the moving stability is good.

Bearing all is equipped with in long-armed corresponding top sheave and the lower sheave position that extend base bottom described in the present invention.Pulley operation steady in a long-term is guaranteed in friction when bearing being installed helping to reduce this two places fixed pulley and rotate, effectively reduces work noise.

Bearing is equipped with at corresponding rotating fulcrum place on the pivoted arm described in the present invention.Action is more smooth when in the rotating fulcrum position bearing being installed and can guaranteeing the pivoted arm rotation work, can also control noise.

The bilayer structure of spun-glass insulation layer is wrapped up in the present invention outward by graphite linings, the existing electric stove wire heating of the body of heater quick heating of making, temperature height, thermometric and temperature control is more sensitive accurately, be difficult for producing the pipe internal stress with the thermoplastic straight tube of the described process furnace of invention, eliminated in the past because the bombing hidden danger that stress causes and slow burst fall into.In addition, the switching of bell and body of heater elevating translational be all by air cylinder driven control, motion steadily, regulate and maintenance all very convenient, can Effective Raise production efficiency.

[description of drawings]

Fig. 1: the oven body part synoptic diagram of process furnace of the present invention.

Fig. 2: the oven body part structural representation of process furnace of the present invention.

Fig. 3: process furnace one-piece construction synoptic diagram of the present invention.

Among the figure: 1. bell, 2. heating tank, 3. body of heater, 3-1. pivoted connection ends, 4. bolt, 5. base, 6. thermal insulation layer, 7. graphite linings, 8. locating part, 9. top sheave, 9-1. sliding wayss, 10. lower sheave, 10. glide path, 11. pivoted arms, 12. rotating stands, 13. pin jointed ends, 14. lift cylinders, 15. rotating fulcrums, 16. flat-removing air cyclinders, 17. cylinder of uncapping.

[embodiment]

The present invention is described further below in conjunction with description of drawings and embodiment.

Bent-tube heating furnace is shown in Fig. 1～2, comprise that a bilayer structure is with the body of heater 3 of heating chamber, be connected with a bell 1 on the body of heater, bell 1 is connecting one can drive the cylinder 17 of uncapping that it rotates around pivoted connection end 3-1, described bilayer structure is the graphite linings 7 in U-shaped cross section and the thermal insulation layer 6 that is wrapped in the glass fibre material outside the graphite linings 7, heating chamber is the heating tank 2 that the U-shaped female parts of graphite linings 7 forms, this heating tank open at both ends.In addition, the present invention also can increase following technical characterictic and makes bent-tube heating furnace more perfect.

Described body of heater 3 usefulness bolts 4 are fixed on the base 5, the base bottom extends to form long-armed, long-armed top connects a flat-removing air cyclinder 16, top sheave 9 and lower sheave 10 are housed on long-armed from top to bottom, the long-armed the other end is articulated in an end of a pivoted arm 11, pin jointed end 13, the other end of pivoted arm connect a lift cylinder 14, and the pivoted arm middle part is connected on the rotating stand 12 and can rotates around the rotating fulcrum 15 that connects; Described upper and lower pulley lays respectively in the sliding ways 9-1 and glide path 10-1 that vertically arranges on the locating part 8, described sliding ways sealing two ends, formed by vertical slideway and the camber line slideway that is communicated with vertical slideway bottom, glide path is the vertical slideway of a sealing two ends, and locating part 8 is fixed on the support; Described long-armed be a pair of, locating part 8 consists of over against the isostructure plate by being fixed on the support two, have the chute corresponding to sliding ways 9-1 and glide path 10-1 on two plates, a pair of long-armed being sandwiched between two plates, the top sheave 9 of described long-armed upper installation and lower sheave 10 are positioned at the respective slide slots on the plate.In addition, bearing all is equipped with in long-armed corresponding top sheave 9 and lower sheave 10 positions that extend base 5 bottoms, and bearing is equipped with at corresponding rotating fulcrum 15 places on the pivoted arm 11.

During work, lift cylinder drives pivoted arm and rotates around fulcrum, can drive the long-armed end of pivoted arm connection moves up and down, flat-removing air cyclinder drives the long-armed process furnace that can drive and does translational movement, position-limiting action by upper and lower pulley and corresponding upper and lower slideway cooperation, the control bent-tube heating furnace is done lifting and the translation of desired trajectory in the localized area, satisfy the mobile needs of body of heater in producing.

Claims

1. bent-tube heating furnace, comprise that a bilayer structure is with the body of heater (3) of heating chamber, be connected with a bell (1) on the body of heater, it is characterized in that described bilayer structure is the graphite linings (7) in U-shaped cross section and is wrapped in the outer thermal insulation layer (6) of graphite linings (7), heating chamber is the heating tank (2) that the U-shaped female parts of graphite linings (7) forms, described heating tank open at both ends; Described bell (1) is connecting one can drive the cylinder of uncapping (17) that it rotates around pivoted connection end; Described body of heater (3) is fixed on the base (5), the base bottom extends to form long-armed, long-armed top connects a flat-removing air cyclinder (16), top sheave (9) and lower sheave (10) are housed on long-armed from top to bottom, the long-armed the other end is articulated in an end of a pivoted arm (11), the pivoted arm the other end connects a lift cylinder (14), and the pivoted arm middle part is connected in a rotating stand (12) upward and can rotates around the rotating fulcrum (15) that connects; Described upper and lower pulley lays respectively in the upper sliding ways (9-1) and glide path (10-1) that vertically arranges of a locating part (8), described sliding ways sealing two ends, formed by vertical slideway and the camber line slideway that is communicated with vertical slideway bottom, glide path is the vertical slideway of a sealing two ends, and locating part (8) is fixed on the support.

2. bent-tube heating furnace according to claim 1 is characterized in that described thermal insulation layer (6) is the glass fibre material.

3. bent-tube heating furnace according to claim 2, it is long-armed for a pair of to it is characterized in that described base (5) bottom is extended, locating part (8) consists of over against the isostructure plate by being fixed on the support two, have the chute corresponding to sliding ways (9-1) and glide path (10-1) on two plates, a pair of long-armed being sandwiched between two plates, the top sheave of described long-armed upper installation (9) and lower sheave (10) are positioned at the respective slide slots on the plate.

4. according to claim 2 or 3 described bent-tube heating furnaces, it is characterized in that long-armed corresponding top sheave (9) and lower sheave (10) position that extend described base (5) bottom all be equipped with bearing.

5. according to claim 2 or 3 described bent-tube heating furnaces, it is characterized in that the upper corresponding rotating fulcrum (15) of described pivoted arm (11) locates to be equipped with bearing.

6. bent-tube heating furnace according to claim 4 is characterized in that corresponding rotating fulcrum (15) locates to be equipped with bearing on the described pivoted arm (11).