CN2550091Y

CN2550091Y - Boiling type resin sand thermal regenerating furnace

Info

Publication number: CN2550091Y
Application number: CN 02239546
Authority: CN
Inventors: 孙学忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-24
Filing date: 2002-06-24
Publication date: 2003-05-14
Anticipated expiration: 2012-06-24

Abstract

The utility model relates to a boiling type resin sand thermal regenerating furnace, belonging to the foundry machinery. the utility model comprises a furnace body, a burner, a lower chamber, a boiling board, a plurality of nozzles, a boiling chamber, a plurality of short clapboards, a plurality of high clapboards and a sank shaking tube; wherein, the boiling board is formed by jointing a plurality of boards with step type stop openings; the edges of the stop openings are jointed to a fixing board; every two neighboring stop openings are fixed by a boiling nozzle and a nut; the stop opening and the nozzle and the fixing hole between two board have a gap; or, a boiling board 4 is formed by jointing a plurality of splicing boards which has step type stop openings; the edges of the stop openings are inserted into the groove of the inner wall of the furnace body and are lined by a fire resistant mat; a gap is left between the outer edge of the fire resistant mat and the inner wall of the groove; the boiling board tilts downward the furnace body; and the gas velocity of flow at the fire entering opening is larger than the jetting velocity of flow of a boiling nozzle. The utility model has beneficial effects that the two boiling board proposals can both effectively adjust the strain quality of the thermal shape change, so as to avoid departure of a non metal boiling board or the damage to the furnace body caused by the metal boiling board. A nonmetal boiling board can adequately remove sand and is easy to be lighted again. The velocity of flow at the fire entering opening is larger than the jetting velocity of flow of a boiling nozzle, thus removing the back fire phenomena of lighting hole of a burner tip cover.

Description

Boiling type resin sand thermal reclamation stove

Technical field: the utility model relates to foundry machinery, mainly is meant a kind of boiling type thermal reclamation device that makes the casting resin sand demoulding reuse of having used.

Background technology: for the demoulding reuse of the multiple film old sand of resin in the Foundry Production, Patent Office of the People's Republic of China discloses a kind of resin sand demoulding regenerating unit, its patent No. is ZL96213004.4, it is by body of heater, burner, chamber under the stove, boiling plate, a plurality of boiling nozzles, boiling-house, the short dividing plate of polylith, high dividing plate, formations such as knockout tube and knockout baffle plate, find in the use, there is following defective in it: one, when the boiling plate that adopts metal to manufacture is built in stove, because of temperature distortion is squeezed body of heater bad, if adopt the nonmetal boiling plate of carborundum, then make the boiling plate fracture because of stove stress, must remove the stove masonry and change boiling plate at every turn, change difficulty, the maintenance cost height; Its two, former boiling plate is horizontally disposed with, during the blowing out sand removal sand removal unclean, the surplus sand on the boiling plate buries nozzle transverse jet pore, making can not natural permeable, next ignition difficulties; Its three, it is incorrect with boiling nozzle jet flow parameters to go into the burner gas flow rate, makes the burner sleeve fire hole that fiery phenomenon be arranged down.

Summary of the invention: technical problem to be solved in the utility model is at the technical defective of existing resin sand regenerating unit, finds out relative counter measures, and a kind of improved boiling type resin sand thermal reclamation stove is provided.

The technical solution of the utility model is, boiling type resin sand thermal reclamation stove, comprise chamber 16 under body of heater 5, burner 14, the stove, boiling plate 7, a plurality of boiling nozzle 8, boiling-house 13, the indoor short dividing plate 2 of polylith, high dividing plate 6, and all parts such as knockout tube 3 of establishing, boiling plate 7 cooperates overlap joint to form by the polylith assembly unit plate with stepped seam 22, its peripheral overlap joint that matches with body of heater fixed head 9 with seam, it is fixing that the adjacent panels stop portion adds nut 10 by the boiling nozzle, has the gap between stop portion and nozzle and two plate fixing holes between plate; Perhaps, boiling plate 7 cooperates overlap joint to form by the polylith assembly unit plate with stepped seam, and its periphery embeds in the inboard wall of furnace body groove, and lining refractory block 23 has the gap between its outer rim and trench wall.Boiling plate tilts to the body of heater rear portion.The gross area of boiling nozzle transverse jet pore is 3-7 times into the burner area greater than going into the burner area.

Good effect of the present utility model is, by the polylith assembly unit plate with seam match with the body of heater fixed head overlap joint boiling plate, the dependent variable of being heated of boiling plate and body of heater has been adjusted in gap between the seam gap between adjacent panels and boiling nozzle and two plate fixing holes; And cooperate overlap joint by polylith assembly unit plate with seam, its periphery embeds the inboard wall of furnace body groove, and the boiling plate of lining refractory block, because of the scalable slip of seam gap between plate and boiling plate periphery, solved shape limit stress problem equally effectively, above-mentioned two kinds of boiling plate schemes all avoided the fracture of nonmetal boiling plate, or the metal boiling plate are to the destruction of body of heater, prolonged boiling plate service life, guaranteed body of heater safety, and it is easy to change boiling plate, needn't tear body of heater again open.Boiling plate with certain inclination angle can make sand removal thorough, and igniting easily again.Make into the burner area less than the nozzle fumarole gross area, thereby make into the burner gas flow rate, both guaranteed the boiling requirement, avoided the burner sleeve fire hole to fall fire again greater than the orifice gas flow velocity.

Description of drawings: the interior boiling plate B-B view of interior boiling plate structure chart accompanying drawing 5 another form stoves of boiling plate A-A view accompanying drawing 4 another form stoves in boiling plate structure chart accompanying drawing 3 stoves in accompanying drawing 1 the utility model front view accompanying drawing 2 stoves

The specific embodiment: accompanying drawing 1 is specific embodiment of the utility model, body of heater 5 is constructed by multiple refractory material and is formed, boiling plate 7 is installed at the middle part in the stove, the boiling plate bottom is chamber 16 under the stove, its front end is a burner block, its center is that burner is gone into burner 15, goes into the burner periphery and establishes many cool air hoses 17, and burner 14 joins with fuel feeding, confession air distribution device.Boiling plate top is boiling-house 13, in establish high dividing plate 6 of polylith and the short dividing plate 2 of polylith, short dividing plate is seated on the boiling plate, the boiling-house end is established sand export 21 and sand removal mouth 20, the boiling-house front end is a knockout tube 3 on it, in establish the oblique knockout baffle plate 4 of polylith.Boiling plate is fixed with a plurality of boiling nozzles 8, and nozzle longitudinal center hole communicates with the upper lateral fumarole.During work, burner sprays into flame through going into burner chamber under stove, blasts cold wind by the many downward chambers of cool air hose, and mixed high-temperature gas blasts boiling-house through boiling plate boiling nozzle, make by what the knockout pipe added and treat regenerating resin sand along what oblique sand block plate fell, by the boiling of high-temperature gas spray drum, and below high dividing plate and above the short dividing plate, S-shaped travelling forward, in the zeiosis process, the surface resin film is burnt by high-temperature gas, becomes demoulding reclaimed sand, is drawn off by sand export to the stove tail end.

The present invention's boiling plate scheme has two: it is just like shown in the accompanying drawing 2,3, boiling plate 7 is made of polylith assembly unit plate and the fixed head 9 that is fixed in the stove masonry, polylith assembly unit plate with stepped seam 22 overlap joint that is fitted to each other, cooperate overlap joint with the fixed head 9 that periphery has a seam again, the adjacent panels stop portion adds nut 10 fixing (all the other nozzles are fixed on non-stop portion) by the nozzle that partly seethes with excitement, has the gap between adjacent panels stop portion and nozzle and two plate fixing holes, boiling plate and the body of heater dependent variable of being heated has been adjusted in these gaps; It is two as accompanying drawing 4, shown in 5, boiling plate 7 only cooperates overlap joint to form by the polylith assembly unit plate with stepped seam, and there is not the body of heater fixed head, the boiling plate that is overlapped to form, its periphery embeds in the inboard wall of furnace body groove, and lining refractory block 23, has the gap between boiling plate outer rim and trench wall in the groove, the refractory block that serves as a contrast is the alumina silicate felt pan in the present embodiment, owing to have the seam gap between adjacent panels, and in the groove boiling plate periphery can be on fire-resistant liner telescopic slide, thereby, solved the deformational stress problem equally effectively, above-mentioned two kinds of boiling plates both had been suitable for non-metal board, also were suitable for metallic plate, present embodiment adopts first kind of boiling plate with fixed head, and adopts the nonmetallic materials carborundum plate.If when adopting a kind of boiling plate in back, can be in stove masonry one side, give with boiling plate co-altitude place and to establish fabrication hole, seal with refractory material during operate as normal, be convenient to change the plate maintenance.Non-being horizontally disposed with of its boiling plate of the present invention, but tilt to the body of heater rear portion, as shown in Figure 4, the 0 °＜α in its inclination angle≤2 °, present embodiment α=1 °.The nozzle fumarole gross area of the present invention is greater than going into the burner area, be 3-7 times into the burner area, present embodiment is 5 times, thereby make into the burner gas flow rate greater than boiling nozzle transverse jet pore gaseous blast speed, avoided the fire hole tempering, during practical application, should determine after the area ratio, adjust flame and intake velocity, make boiling plate nozzle flow velocity and jet amount can guarantee the material boiling.The fire end seam broken of setting up defences is advanced in the chamber under the stove, and the Explosion-proof cap made by non-metallic refractory 12 is pushed down sealing by deadweight, and explosion-proof frame 11 is fixed on and covers explosion-proof covering board on the body of heater, causes the explosion accident generation to avoid not firing because of oil spout repeatedly.The chamber end is established roast technic hole 19 under the stove, seals with refractory material during operate as normal.Chamber and boiling-house are respectively equipped with

temperature measuring equipment

18 and 1 under the stove, are used to detect down chamber gas temperature and boiling-house sand temperature.

Claims

1. a Foundry Production is with boiling type resin sand thermal reclamation stove, comprise body of heater (5), burner (14), chamber under the stove (16), boiling plate (7), a plurality of boiling nozzles (8), boiling-house (13), the short dividing plate of polylith (2), high dividing plate (6), and knockout tube all parts such as (3), it is characterized in that, boiling plate (7) cooperates overlap joint to form by the polylith assembly unit plate with stepped seam (22), its peripheral overlap joint that matches with body of heater fixed head (9) with seam, it is fixing that the adjacent panels stop portion adds nut (10) by the boiling nozzle, the adjacent panels stop portion, and has the gap between nozzle and two plate fixing holes; Perhaps, boiling plate (7) cooperates overlap joint to form by the polylith assembly unit plate with stepped seam, and its periphery embeds in the inboard wall of furnace body groove, and lining refractory block (23) has the gap between its outer rim and trench wall.

2. according to the described boiling type resin sand of claim 1 thermal reclamation stove, it is characterized in that boiling plate (7) tilts to the body of heater rear portion, its inclination angle is 0 °＜α≤2 °.

3. according to claim 1 or 2 described boiling type resin sand thermal reclamation stoves, it is characterized in that the gross area of boiling nozzle transverse jet pore is 3-7 times into burner (15) area.

4. according to the described boiling type resin sand of claim 3 thermal reclamation stove, it is characterized in that the seam broken of setting up defences of burner end is gone in the chamber under the stove, by explosion-proof covering board (12) capping.