CN102853637A

CN102853637A - Flat round pipe inner heating double-cone vacuum dryer

Info

Publication number: CN102853637A
Application number: CN 201110177756
Authority: CN
Inventors: 沈善明
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-28
Filing date: 2011-06-28
Publication date: 2013-01-02

Abstract

The invention relates to a flat round pipe inner heating double-cone vacuum dryer and belongs to the technical field of pharmaceutical chemical heat exchange, being applied to performance of dynamic vacuum low-temperature high-efficiency drying on medicine and fine chemical product filter cakes. The flat round pipe inner heating double-cone vacuum dryer consists of double cones, low-temperature steam generator, steam heating coiled pipe, a left/right rotating shaft, a flat round pipe inner heating member, a zero hidden danger rotating vacuum sealing piece, a driver and the like, wherein the driver drives the rotating shaft and drives the double cones to rotate; the low-temperature steam generator provides a saturated water vapor heat source with the temperature of 30 to 100 DEG C for vacuum drying; the heating area of the double-cone dryer provided with the flat round pipe inner heating member is 2 to 3 times that of the traditional double-cone dryer, so that the drying efficiency of the equipment is correspondingly improved; and moreover, the wall thickness of the flat round pipe inner heating pipe is 1/3 to 1/2 of the thickness of the double-cone wall, the thermal resistance is reduced, lots of stainless steel materials are saved, according to the zero hidden danger rotating vacuum sealing piece, the structural pollution hidden danger of the traditional double-cone vacuum sealing piece is avoided, the zero hidden danger rotating vacuum sealing piece is the improvement of the traditional sealing piece, and therefore, the good manufacturing practice (GMP) requirements of the dryer are met.

Description

Heating double-cone vacuum dryer in the oblate pipe

Affiliated technical field

The present invention relates to heating double-cone vacuum dryer in a kind of oblate pipe, belong to the medication chemistry technical field of heat exchange, supply the sticking wall sex medicine of various nothings and fine chemical product filter cake to meet the dynamic vacuum low temperature drying of GMP code requirement.

Background technology

The tradition double-cone vacuum dryer is by the very thick bicone internal surface area heating of wall thickness, because the bicone surface area becomes quadratic relation with the diameter of equipment, volume then becomes magnification ratio that cube relation, enlarged diameter can make volume and heating surface (area) (HS too great disparity and difficult actual employing with device diameters.If interior heating is the most desirable measure that the equipment heating surface (area) (HS is amplified.Traditional drying equipment adopts hollow heated plate to make interior heater, reason because of will quadrature large and heating plate thin thickness, must in hollow heated plate, establish the pillar plug welding and strengthen structure, to establish thousands of pillar plug weldings in many interior heated plates in the large-scale double-cone dryer, because plate is thin, be difficult to make on the thin plate very standard of thousands of bevel for weldings, require sanding and polishing because of the face of weld in the medicine equipment again, more easily expose the quality problems of welding, as long as there is a problems of welded quality in the thousands of pads, will cause whole drying machine paralysis.

Double-cone vacuum dryer is the main drying equipment of many kind bulk drugs again, but there is structural pollution hidden danger in the vacuum seal in existing traditional double-cone vacuum dryer.Be full of dust in the drying machine, and sealing ring turns round under the condition that can not add lubricant, sealing ring will inevitably suffer wear-out failure and leak gas, gas leakage can be carried the quality of polluting foreign matter suction bicone internal contamination medicine and affecting medicine secretly, part in annual many ten thousand adverse drug reactions must be by due to the vacuum seal that has structural pollution hidden danger in the double-cone vacuum dryer.Obvious traditional double-cone vacuum dryer does not meet the GMP code requirement because of the vacuum seal utmost point that has structural pollution hidden danger.

Summary of the invention

The present invention seeks to amplify and eliminate the vacuum seal that has structural pollution hidden danger for the heating surface (area) (HS that overcomes traditional double-cone vacuum dryer, provide in the oblate pipe of establishing in a kind of without hidden danger rotation vacuum seal and heat double-cone vacuum dryer.Technical scheme of the present invention is: it is by steam inlet, steam condensation water outlet, steam swivel joint, a left side (right side) bearing block, a left side (right side) rotating shaft, Low Temperature Steam generator, bicone, manhole, heating member within flat circular tube, exhaust gas filter, form without hidden danger rotation vacuum seal, drive sprocket, driving machine, exhaust tube holder, exhaust tube, bleeding point and steam(-)coil etc.Its feature is: Low Temperature Steam generator and bicone welding are integrally formed, left (right side) rotating shaft one end is fixed on bicone spin balancing center, left (right side) rotating shaft is bearing on the bearing block of a left side (right side), drive sprocket is located on the dextral shaft, and driving machine drives drive sprocket and drives bicone to a direction rotation; The steam(-)coil of two series connection is welded on respectively on the part inwall perpendicular to the Low Temperature Steam generator both sides of direction of rotation, the primary steam thermal source of evaporation water is provided for the Low Temperature Steam generator, in the Low Temperature Steam generator, give and annotate a certain amount of pure water and vacuumized except inert gas, adding a thermal source can produce 30～100 ℃ of low-temperature saturated steam thermals source for drying machine, and primary steam is connected steam inlet on the steam swivel joint and is connected the steam(-)coil of connecting in the pipeline that is connected and the Low Temperature Steam generator with steam condensation water and is connected with steam condensation water; The vacuum exhaust pipe of being fixed by the exhaust tube holder passes without hidden danger rotation vacuum seal and enters in the bicone, and slightly upward bent exhaust tube end is established exhaust gas filter in entering bicone, and tail gas is discharged through bleeding point; A plurality of heating member within flat circular tubes equidistantly are arranged in drying machine pivot both sides, stay the maintenance flushing channel that is equivalent to the manhole diameter width between the both sides, the steam condensation water UNICOM mouth by the heating member within flat circular tube two ends inserts and is weldingly fixed on the bicone inwall; Between dextral shaft and exhaust tube, establish without hidden danger rotation vacuum seal, static exhaust tube in seal between the two seals circle has been opened the hole, when the sealing ring near the bicone inboard destroys, gas leakage can not enter in the bicone from the sealing ring that destroys, and only can by the perforate on the exhaust tube, pump to the larger vacuum system of negative pressure.

Adopted the heating member within flat circular tube that does not need to do interior strengthening measure because of interior heater, exempt interior reinforcement welding quality and caused the cruelly broken trouble and worry of interior heating element heater, and can save a large amount of manpower and materials, the pipe thickness of oblate pipe only is 1/3～1/2 of bicone wall thickness, enlarge 2～3 times if the double-cone vacuum dryer THS of interior heater is long-pending than traditional bipyramid, the heating surface (area) (HS that the heating surface (area) (HS of establishing the double-cone vacuum dryer of interior heater is supported 2～3 traditional double-cone vacuum dryers.Since in THS is long-pending in the thin-walled heater as main heating surface (area) (HS, not only thermal resistance is low and saved a large amount of stainless steels, both increased substantially drying efficiency, reduced again equipment manufacturing cost, drying efficiency improves nature and reduces the dry time, thereby significantly saves the power consumption of drive motors.

There is the traditional vacuum seal of structural pollution hidden danger in removing, can stop to reduce the chance that produces adverse drug reaction because medicine is contaminated because seal destroys the contaminated impact of medicine that causes, and protects vast medication person's safety.

Description of drawings

Fig. 1 is heating double-cone vacuum dryer structure chart in the oblate pipe;

Fig. 2 is the A-A profile of Fig. 1;

Fig. 3 is the B-B profile of Fig. 1;

Fig. 4 is the C-C view of Fig. 3;

Fig. 5 is without hidden danger rotation vacuum seal structure chart.

The specific embodiment

The embodiment of the invention is described further by reference to the accompanying drawings, such as Fig. 1,2,3, shown in 4, it comprises by steam inlet (1) to heat double-cone vacuum dryer in the oblate pipe, steam condensation water outlet (2), steam swivel joint (3), left (right side) bearing block (4,12), left (right side) rotating shaft (5,13), Low Temperature Steam generator (6), bicone (7), manhole (8), heating member within flat circular tube (9), exhaust gas filter (10), without hidden danger rotation vacuum seal (11), drive sprocket (14), driving machine (15), exhaust tube holder (16), exhaust tube (17), the compositions such as bleeding point (18) and steam(-)coil (19).Its feature is: Low Temperature Steam generator (6) and bicone (7) welding are integrally formed, left (right side) rotating shaft (5,13) end is fixed on the spin balancing center of bicone (7), left (right side) rotating shaft (5,13) be bearing in a left side (right side) bearing block (4,12) on, drive sprocket (14) is fixed on the dextral shaft (13), and driving machine (15) drives drive sprocket (14) and drives bicone (7) to a direction rotation; The steam(-)coil of 2 series connection (19) is welded on respectively on the part inwall perpendicular to Low Temperature Steam generator (6) both sides of direction of rotation, and steam is connected steam inlet (1) on the steam swivel joint (3) and is connected the pipeline that (2) be connected with steam condensation water and is connected with the steam(-)coil (19) of two series connection with steam condensation water; Being fixed on extraction steam pipe (17) on the exhaust tube holder (16) passes without hidden danger rotation vacuum seal (11) and enters in the bicone (7), establish exhaust gas filter (10) at slightly upward bent exhaust tube (17) end, tail gas is discharged through bleeding point (18).

Such as Fig. 2,3, shown in 4, heating member within flat circular tube (9) is made of steam condensation water UNICOM mouth (20), oblate steam condensation water cross over pipe (21) and oblate heating tube (22), insert and be welded in the oblate steam condensation water cross over pipe (21) that is connected with steam condensation water UNICOM mouth (20) by many oblate heating tubes (22) are in parallel, the steam condensation water UNICOM mouth (20) at a plurality of heating member within flat circular tubes (9) two ends equidistantly inserts and is welded on the inwall of the bicone perpendicular with rotation centerline (7).

As shown in Figure 5, consisted of by O-ring seals seat (23), O-ring seals (24) without hidden danger rotation vacuum seal (11), divide in O-ring seals seat (23) and offer 2 O-ring seals of twice per pass (24), the exhaust tube (17) at place is opened 2 diameter 4～8mm circular holes (25) in the middle of the two seals circle.

Claims

1. heat double-cone vacuum dryer in an oblate pipe, belong to the medication chemistry technical field of heat exchange, it comprises by steam inlet (1), steam condensation water outlet (2), steam swivel joint (3), left (right side) bearing block (4,12), left (right side) rotating shaft (5,13), Low Temperature Steam generator (6), bicone (7), manhole (8), heating member within flat circular tube (9), exhaust gas filter (10), without hidden danger rotation vacuum seal (11), drive sprocket (14), driving machine (15), exhaust tube holder (16), exhaust tube (17), bleeding point (18) and steam(-)coil (19) form, it is characterised in that: Low Temperature Steam generator (6) and bicone (7) welding are integrally formed, left (right side) rotating shaft (5,13) end is fixed on the spin balancing center of bicone (7), left (right side) rotating shaft (5,13) be bearing in a left side (right side) bearing block (4,12) on, drive sprocket (14) is fixed on the dextral shaft (13), and driving machine (15) drives drive sprocket (14) and drives bicone (7) to a direction rotation; The steam(-)coil of 2 series connection (19) is welded on respectively on the part inwall of steam generator (6) both sides perpendicular to direction of rotation, and steam is connected steam inlet (1) on the steam swivel joint (3) and is connected the pipeline that (2) communicate with steam condensation water and is connected with the steam(-)coil (19) of two series connection with steam condensation water; Being fixed on exhaust tube (17) on the exhaust tube holder passes without hidden danger rotation vacuum seal (11) and enters in the bicone (7), establish exhaust gas filter (10) at slightly upward bent exhaust tube (17) end, tail gas is discharged through bleeding point (18).

2. heat double-cone vacuum dryer in the oblate pipe according to claim 1, it is characterized in that heating member within flat circular tube (9) is by steam condensation water UNICOM mouth (20), oblate steam condensation water cross over pipe (21) and oblate heating tube (22) consist of, insert and be welded in the oblate steam condensation water cross over pipe (21) that is connected with steam condensation water UNICOM mouth (20) by many oblate heating tubes (22) are in parallel, the steam condensation water UNICOM mouth (20) at a plurality of heating member within flat circular tubes (9) two ends equidistantly inserts and is welded on the inwall with the perpendicular bipyramid cone (7) of rotation centerline.

3. heat double-cone vacuum dryer in the oblate pipe according to claim 1, it is characterized in that being consisted of by seal with O ring ring support (23), O-ring seals (24) without hidden danger rotation vacuum seal (11), divide in O-ring seals seat (23) and offer 2 O-ring seals of twice per pass (24), the exhaust tube (17) at place is opened 2 diameter 4～8mm circular holes (25) in the middle of the two seals circle.