阅读说明：本技术 一种三筒真空干燥仓 (Three-cylinder vacuum drying bin ) 是由 过利敏 于 2018-08-03 设计创作，主要内容包括：本发明一种三筒真空干燥仓包括外筒仓,中筒仓,内筒仓,散热管,密封罩,密封垫片,支架,挡板。内筒仓,中筒仓依次同心套在外筒仓内；外筒仓,中筒仓和中筒仓之间依次由支架固定连接。散热管的两端插在外筒仓,中筒仓,内筒仓的筒体的上下对应的孔口内；密封罩在外力作用下紧紧地压在散热管上的密封垫片上,三筒真空干燥仓通过散热管和内筒仓,中筒仓,外筒仓的筒体之间的焊接固定,耐高温的防锈油漆涂层防锈,密封垫片和密封罩的四重技术方案的保护,保障了内筒仓,中筒仓,外筒仓仓外的空气或导热工质不能够通过散热管和内筒仓,中筒仓,外筒仓的筒体之间的焊接处进入内筒仓,中筒仓,外筒仓的仓内部。(The invention relates to a three-cylinder vacuum drying bin which comprises an outer silo, a middle silo, an inner silo, a radiating pipe, a sealing cover, a sealing gasket, a bracket and a baffle plate. The inner silo and the middle silo are sequentially and concentrically sleeved in the outer silo; the outer silo, the middle silo and the middle silo are fixedly connected by a bracket in sequence. Two ends of the radiating pipe are inserted into the outer silo, the middle silo and the corresponding upper and lower orifices of the inner silo; the sealing cover is tightly pressed on the sealing gasket on the radiating pipe under the action of external force, the three-cylinder vacuum drying bin is fixed by welding between the radiating pipe and the inner cylinder bin, the middle silo and the cylinder body of the outer silo, and the high-temperature-resistant antirust paint coating is antirust, and the sealing gasket and the sealing cover are protected by the quadruple technical scheme, so that air or heat-conducting working medium outside the outer cylinder bin can not enter the inner silo, the middle silo and the inner cylinder bin through the radiating pipe and the welding part between the radiating pipe and the inner cylinder bin, between the middle silo and the cylinder body of the outer silo.)

1. A three-cylinder vacuum drying bin comprises an outer silo (1), a middle silo (2), an inner cylinder bin (3), a radiating pipe (10), a sealing cover (18), a sealing gasket (20), a support (9) and a baffle (4); the method is characterized in that: the outer silo (1) and the middle silo (2) are sequentially and concentrically sleeved on the inner silo (3); the outer silo (1), the middle silo (2) and the inner silo (3) are fixedly connected by a bracket (9) in sequence;

the radiating pipe (10) is a metal pipe with two open ends or a heat pipe;

the middle silo (2) comprises a middle silo outer cylinder body (14), a middle silo inner cylinder body (13) and a helical blade (8); the two ends of the middle silo (2) are provided with a feed inlet (5) and a discharge outlet (6); the helical blade (8) is fixed on the outer cylinder (14) of the middle silo; two ends of the radiating pipe (10) are inserted into the middle silo outer cylinder body (14) of the middle silo (2), and the upper and lower corresponding orifices (19) of the middle silo inner cylinder body (13); the radiating pipe (10) is formed by mixing a metal pipe with two open ends and a heat pipe together and is arranged on a cylinder body (23) of the middle silo (2);

the outer silo (1) comprises an outer silo outer cylinder body (12), an outer silo inner cylinder body (11) and a helical blade (8); the two ends of the outer silo (1) are provided with a feed inlet (5) and a discharge outlet (6); the helical blades (8) are fixed on the outer cylinder body (12) of the outer silo, two ends of a radiating pipe (10) are inserted into the outer cylinder body (12) of the outer cylinder silo (1), and the upper part and the lower part of the inner cylinder body (11) of the outer cylinder silo are in corresponding orifices (19); the radiating pipe (10) is formed by mixing a metal pipe with two open ends and a heat pipe together and installing the metal pipe and the heat pipe on a cylinder body (23) of the outer silo (1);

the inner silo (3) comprises an inner silo cylinder body (15) and a helical blade (8); the two ends of the inner silo (3) are provided with a feed inlet (5) and a discharge outlet (6); the helical blade (8) is fixed on the inner silo cylinder (15); two ends of the radiating pipe (10) are inserted into corresponding upper and lower orifices (19) of an inner silo cylinder body (15) of the inner silo (3);

the two ends of the radiating pipe (10) protrude out of the outer silo (1) and the middle silo (2), and the height of the cylinder body (23) of the inner silo (3) is 20-180 mm; the radiating pipe (10) and the cylinder body (23) around the orifice (19) are fixedly sealed into a whole;

after the sealing gasket (20) is sleeved on the radiating pipes (10) which are protruded out of the two ends of the radiating pipe (10) outside the cylinder body (23) of the outer silo (1), the middle silo (2) and the inner silo (3), the sealing cover (18) is tightly pressed on the sealing gasket (20) on the radiating pipe (10) under the action of external force;

the upper cover opening (22) of the sealing cover (18) is fixed on the radiating pipe (10), and the sealing cover (18) and the radiating pipe (10) are connected and fixed into a whole; the lower opening (21) of the sealing cover (18) is fixed on the outer silo (1), the middle silo (2) and the cylinder body (23) of the inner silo (3), and the sealing cover (18) is fixedly connected with the outer silo (1), the middle silo (2) and the cylinder body (23) of the inner silo (3) into a whole;

an inner silo cylinder body (15) at the discharge port (6) end of the inner silo (3) is fixedly sealed into a whole through a baffle (4) and a middle silo inner cylinder body (13) at the feed port (5) end of the middle silo (2); a sealed cavity is arranged between an inner silo cylinder body (15) of the inner silo (3) and an inner cylinder body (13) of the middle silo (2);

the inner cylinder body (11) of the outer cylinder bin at the discharge port (6) end of the outer cylinder bin (1) is fixedly sealed into a whole through the outer cylinder body (14) of the middle cylinder bin at the feed port (5) end of the middle cylinder bin (2); an inner cylinder body (11) of the outer cylinder bin at the feed inlet (5) end of the outer cylinder bin (1) is fixedly sealed into a whole through a baffle (4) and an outer cylinder body (14) of the middle cylinder bin at the discharge outlet (6) end of the middle cylinder bin (2); an outer barrel bin outer barrel body (12) at the feed inlet (5) end of the outer silo (1) is fixedly sealed into a whole through a baffle (4) and a middle barrel bin inner barrel body (13) at the discharge outlet (6) end of the middle silo (2); a sealed cavity is arranged between an inner cylinder body (11) of the outer cylinder bin (1) and an outer cylinder body (14) of the middle cylinder bin (2);

the heat conducting working medium heated in the external heating bin or the heating groove flows into a cavity between the inner silo (3) and the middle silo (2) through metal pipes with openings at two ends on the middle silo (2) and the outer silo (1), and the heat conducting working medium carrying heat energy can conduct heat conduction and heat for a cylinder body (23) of the inner silo (3) and the radiating pipe 7;

heat energy carried by heat conducting working media in the peripheral heating bin or the heating groove conducts heat conduction and heat exchange for materials through the outer silo (1), the inner barrel bin (3), the barrel body (23) of the middle silo (2) and the radiating pipes (10), the heat conduction and heat exchange speed of the heat energy is improved through the increased heat exchange area of the radiating pipes (10), the drying efficiency of the materials is enhanced, and the purpose of quickly drying the materials is achieved.

2. The three-cylinder vacuum drying bin according to claim 1, wherein: the sealing cover (18) is a fixed cover manufactured by stamping a metal plate, and the inner side and the outer side of the sealing cover (18) are coated with high-temperature-resistant antirust paint for rust prevention.

3. The three-cylinder vacuum drying bin according to claim 1, wherein: the sealing gasket (20) is made of metal or non-metal plate-shaped materials, and the sealing gasket made of proper materials is selected according to the temperature requirement.

Technical Field

The invention relates to a three-cylinder drying bin, in particular to a three-cylinder vacuum drying bin.

Background

When the radiating pipes are installed in the outer silo, the middle silo and the inner silo of the three-cylinder drying silo of the drying equipment in the market, corresponding orifices need to be cut on the cylinder body of the drying silo, two ends of the radiating pipes are fixedly welded in the orifices of the cylinder bodies of the outer silo, the middle silo and the inner silo in sequence, and the radiating pipes and the orifices of the cylinder bodies of the outer silo, the middle silo and the inner silo are fixedly welded into a whole. Leakage points appear on the outer silo, the middle silo and the inner silo due to a plurality of reasons in the using process of the three-cylinder drying silo: 1. the welding parts of the radiating pipe and the cylinder bodies of the outer silo, the middle silo and the inner cylinder silo have rust leakage holes due to oxidation corrosion. 2. The welding parts of the radiating pipes, the outer silo, the middle silo and the inner silo are easily broken under the action of the stress of the invagination of the outer silo, the middle silo and the inner silo. 3. The welding parts of the radiating pipes and the bodies of the outer silo, the middle silo and the inner silo are easily broken under the shaking action of the radiating pipes in the rotating three-cylinder drying silo.

Welding seams of dozens of meters to hundreds of meters are arranged among the outer silo, the middle silo and hundreds of radiating pipes in the inner silo of the three-cylinder drying silo and the orifices of the cylinders of the outer silo, the middle silo and the inner silo. In the process of vacuum drying materials in the three-cylinder drying bin, leakage openings of 1-2 mm appear in welding seams of dozens of meters to hundreds of meters at the welding positions of the outer silo, the middle silo, the radiating pipe of the inner silo and the cylinder body of the drying bin, and air or heat conducting working medium outside the outer silo, the middle silo and the inner cylinder bin can enter the inner parts of the outer silo, the middle silo and the inner cylinder bin of the three-cylinder drying bin from the leakage openings at the welding positions of the radiating pipe and the cylinder body of the outer silo, the middle silo and the inner cylinder bin.

At this time, the drying equipment needs to be stopped for maintenance, the drying and drying of the materials cannot be carried out, and the modification, maintenance and production stop are both costly. The maintenance in-process needs all dismantle three dry storehouses, and the leak point is also difficult for seeking, more difficult maintenance, and three dry storehouses just can not normally dry the use, causes scrapping of three dry storehouses indirectly.

Disclosure of Invention

The invention aims to solve the problem of overcoming the defects in the prior art and provides a three-cylinder vacuum drying bin.

In order to achieve the purpose, the invention is realized by the following technical scheme: a three-cylinder vacuum drying bin comprises an outer silo, a middle silo, an inner silo, a radiating pipe, a sealing cover, a sealing gasket, a support and a baffle.

The outer silo, the middle silo and the inner silo are made of metal plates, and the thickness of each metal plate is 0.5-8 mm.

For describing the structural composition of the outer silo, the middle silo and the inner silo in more detail, the cylinder body of the outer silo is indicated as an outer cylinder silo outer cylinder body and an outer cylinder silo inner cylinder body in the following; the cylinder body of the middle silo is marked as an outer cylinder body of the middle silo and an inner cylinder body of the middle silo; the body of the inner silo is noted as the inner silo body. Therefore, the outer silo, the middle silo and the inner silo are just the outer barrel of the outer silo, the inner barrel of the outer silo, the outer barrel of the middle silo, the inner barrel of the middle silo and the inner barrel of the inner silo.

The outer barrel of the outer barrel bin, the inner barrel of the outer barrel bin, the outer barrel of the middle barrel bin, the inner barrel of the middle barrel bin and the inner barrel bin are also the outer barrel bin, the middle barrel bin and the inner barrel bin of the three-barrel vacuum drying bin.

The middle silo comprises a barrel body outside the middle silo, a barrel body inside the middle silo and a helical blade.

The two ends of the middle silo are provided with a feed inlet and a discharge outlet.

The outer cylinder body of the middle cylinder bin is arranged outside the inner cylinder body of the middle cylinder bin.

The helical blade is fixed on the outer cylinder body of the middle silo, and the helical blade plays roles of stirring and lifting and propelling materials in the rotation process of the middle silo.

The materials at the feed inlet of the middle silo move to the discharge outlet of the middle silo for discharge under the propelling action of the helical blades.

The middle silo is characterized in that a middle silo outer barrel body of the middle silo is provided with corresponding orifices at the upper part and the lower part, and the diameters of the orifices are the same as the diameters of the pipes of the radiating pipes.

The radiating pipe is a metal pipe with two open ends, or a heat pipe, or the metal pipe with two open ends and the heat pipe are mixed together and installed on the cylinder body.

The pipe wall outside the heat dissipation pipe is provided with heat dissipation fins or is not provided with the heat dissipation fins.

The distance between the hole and the hole on the middle silo outer cylinder body and the middle silo inner cylinder body is 50-300 mm.

The radiating pipe is formed by mixing a metal pipe with two open ends and a heat pipe and is arranged on a cylinder body of the middle silo.

The two ends of the radiating pipe are inserted into the middle silo outer cylinder body of the middle silo, and the upper part and the lower part of the middle silo inner cylinder body are provided with corresponding holes.

The two ends of the radiating pipe are inserted into the corresponding upper and lower orifices of the outer silo, the middle silo and the inner silo; two ends of the radiating pipe protrude out of the outer silo, the middle silo, and the height of the inner silo is 20-180 mm; the pipe spacing between the radiating pipe and the radiating pipe is 50-300 mm.

The radiating pipes arranged on the cylinder body close to the feed inlet end of the middle silo are metal pipes with openings at two ends, and the cylinder bodies at the rest positions of the middle silo are heat pipes or metal pipes with openings at two ends.

The two ends of the radiating pipe outside the cylinder body in the middle silo are convenient for installing the sealing gasket and the sealing cover.

The heat radiating pipe and the cylinder body around the hole are fixedly sealed into a whole, and the joint part of the heat radiating pipe and the cylinder body outside the middle silo and the cylinder body inside the middle silo is firm and airtight.

Coating the radiating pipe and the middle silo outer barrel body of the middle silo, the combination part of the middle silo inner barrel body and the barrel body of the drying silo with high-temperature-resistant antirust paint for rust prevention; the high-temperature-resistant antirust paint can reduce metal oxidation corrosion of the joint parts of the radiating pipe and the middle silo outer barrel body and the middle silo inner barrel body of the middle silo.

The sealing cover is a fixed cover manufactured by stamping a metal plate; and performing coating rust prevention on the inner side and the outer side of the sealing cover by using high-temperature-resistant rust-proof paint.

The upper opening of the sealing cover is fixed on the radiating pipe, and the sealing cover and the radiating pipe are connected and fixed into a whole; the lower opening of the sealing cover is fixed on the outer silo, the middle silo and the inner silo, and the sealing cover is fixedly connected with the outer silo, the middle silo and the inner silo into a whole.

The upper opening of the sealing cover is a small opening, and the inner diameter of the opening of the upper opening of the sealing cover is the same as the diameter of the radiating pipe. The lower opening of the sealing cover is a large opening, the inner diameter of the lower opening of the sealing cover is larger than the diameter of the radiating pipe, and the lower opening of the sealing cover is attached to the outer barrel body and the inner barrel body of the middle silo.

The sealing gasket is made of metal or non-metal plate-shaped material through processes of cutting, stamping or cutting and the like. Can be divided into a metal sealing gasket and a non-metal sealing gasket according to the material. The metal gasket comprises a copper gasket, a stainless steel gasket, an iron gasket, an aluminum gasket and the like. Non-metal asbestos gaskets, non-asbestos gaskets, paper gaskets, rubber gaskets, and the like. And selecting a sealing gasket made of a proper material according to the temperature requirement.

The sealing gaskets are sleeved on the radiating pipes at two ends of the radiating pipes which protrude out of the outer silo, the middle silo and the cylinder body of the inner silo.

The sealing cover is tightly pressed on the sealing gasket on the radiating pipe under the action of external force, and the sealing gasket is arranged in the cavity of the sealing cover, so that the sealing degree of the sealing gasket is improved.

The upper edge of the cover opening of the upper cover opening of the sealing cover pressed on the sealing gasket is welded by an electric welding machine, the upper cover opening of the sealing cover is fixed on the radiating pipe, and the sealing cover and the radiating pipe are connected and fixed into a whole; the sealing cover connected and fixed with the radiating pipe into a whole enhances the firmness of the radiating pipe.

The lower edge of a cover opening of a cover lower opening of a sealing cover pressed on a sealing gasket is welded through an electric welding machine, the cover lower opening of the sealing cover is fixed on a middle silo outer cylinder body of a middle silo, the middle silo inner cylinder body, the sealing cover and the middle silo outer cylinder body of the middle silo, and the middle silo inner cylinder body is connected and fixed into a whole; the middle silo outer barrel body of the middle silo and the middle silo inner barrel body are connected and fixed into a whole through the sealing cover, so that the compression resistance of the middle silo outer barrel body and the middle silo inner barrel body around the radiating pipe is improved.

And (3) coating the outside of the welded and fixed sealing cover with high-temperature-resistant antirust paint for rust prevention.

The middle silo outer barrel body of the middle silo is arranged on the periphery of the radiating pipe, the middle silo inner barrel body is fixedly supported by the sealing cover under the action of negative pressure in the middle silo, the middle silo outer barrel body of the middle silo around the radiating pipe is avoided, the middle silo inner barrel body sinks towards the inside of the middle silo, the radiating pipe and the middle silo outer barrel body of the middle silo, and the welding position of the middle silo inner barrel body can not be broken.

The sealing cover has four functions: firstly, play the effect of fixed seal gasket. And secondly, the sealing cover plays a role in sealing the cylinder body and the radiating pipe of the middle silo, and ensures that air outside the middle silo or heat conducting working medium cannot enter the interior of the silo of the middle silo through a leakage point at the welding position between the radiating pipe and the cylinder body of the middle silo. And thirdly, the middle silo outer cylinder body is fixed on the middle silo, the sealing cover on the middle silo inner cylinder body fixedly supports the middle silo outer cylinder body of the middle silo around the radiating pipe, and the middle silo inner cylinder body improves the negative pressure resistance and compression resistance of the middle silo outer cylinder body of the middle silo around the radiating pipe and the middle silo inner cylinder body. Fourthly, the sealing cover connected and fixed with the radiating pipe as a whole strengthens the middle silo outer barrel body of the radiating pipe and the middle silo, the firmness between the barrel bodies in the middle silo, and the sealing cover connected and fixed with the radiating pipe as a whole ensures the middle silo outer barrel body of the radiating pipe and the middle silo, the welding position of the barrel body in the middle silo can not be broken at the welding position of the barrel body in the middle silo under the shaking action of the radiating pipe in the rotary middle silo, and the middle silo outer barrel body of the radiating pipe and the middle silo can not be broken at the welding position of the barrel body in the middle silo.

When the radiating pipe is a heat pipe, the heat pipe synchronously rotates along with the middle silo, two ends of the heat pipe are continuously staggered and changed up and down, one end of the heat pipe at the lower end is an evaporation section of the heat pipe, and one section of the heat pipe in the middle silo is a condensation section of the heat pipe.

The two ends of the heat pipe protruding out of the cylinder body of the middle silo increase the heat conduction heating area of the evaporation section of the heat pipe, so that the heat energy carried by the heat conduction working medium in the external heating bin or the heating groove can be conveniently transmitted to the protruding cylinder body outside the middle silo, and the evaporation section of the cylinder body in the middle silo, which is positioned at one end of the heat pipe at the lower end of the middle silo, can be heated in a heat conduction mode, and the heat conduction heating speed of the heat energy is increased.

When the radiating pipe is a metal pipe with openings at two ends, the metal pipe with the openings at two ends synchronously rotates along with the inner silo, the openings at two ends of the metal pipe are continuously staggered and changed up and down, the heat conduction working medium carrying heat energy can continuously flow into or out of the inner part of the metal pipe with the openings at two ends to conduct heat conduction and heat exchange for materials near the radiating pipe, the heat conduction and heat exchange speed of the heat energy is improved by the enlarged heat exchange area of the radiating pipe, the material drying efficiency is enhanced, and the purpose of drying the rapid materials is achieved.

The radiating pipe arranged on the cylinder body close to the feed inlet end of the middle silo is a metal pipe with two open ends, and the other positions of the middle silo are provided with heat pipes or metal pipes with two open ends.

The metal pipe with two open ends arranged on the cylinder body near the feed inlet end of the middle silo avoids the problem that the heat-conducting working medium in the cavity between the outer silo and the middle silo and between the inner silo and the middle silo cannot flow smoothly, so that the heat-conducting working medium cannot flow circularly all the time.

The metal pipe and the heat pipe with openings at two ends are arranged on the cylinder body of the middle silo in a mixing way, so that the heat conducting working medium in the cavity between the middle silo and the outer silo and between the middle silo and the inner cylinder silo can be conveniently and quickly circulated.

The outer barrel bin comprises a barrel outside the outer barrel bin, a barrel inside the outer barrel bin and helical blades.

The two ends of the outer barrel bin are provided with a feeding hole and a discharging hole.

The outer barrel bin outer barrel body is arranged outside the outer barrel bin inner barrel body, and the outer barrel bin inner barrel body is a flat U-shaped barrel body with one closed end.

The helical blade is fixed on the outer cylinder body of the outer silo, and the helical blade plays roles of stirring and lifting and propelling materials in the rotation process of the outer silo.

The cooling pipe, the sealing gasket and the sealing cover arranged in the outer silo are the same as the cooling pipe, the sealing gasket and the sealing cover arranged in the middle silo in terms of installation procedures and achieved functional effects.

The outer barrel of the outer barrel bin is provided with corresponding orifices, the upper part and the lower part of the inner barrel of the outer barrel bin are provided with corresponding orifices, and the diameters of the orifices are the same as the diameter of the pipe of the radiating pipe.

The distance between the orifice and the outer barrel of the outer barrel and the orifice of the inner barrel of the outer barrel is 50-300 mm.

The radiating pipe is formed by mixing a metal pipe with two open ends and a heat pipe and is arranged on the cylinder body of the outer silo.

The two ends of the radiating pipe are inserted into the outer cylinder bin outer cylinder body of the outer cylinder bin, the upper and lower corresponding orifices of the outer cylinder bin inner cylinder body are arranged in the orifices, and the height of the radiating pipe, of which the two ends protrude out of the cylinder body of the outer cylinder bin, is 20-180 mm; the pipe spacing between the radiating pipe and the radiating pipe is 50-300 mm.

The radiating pipe arranged on the cylinder body close to the discharge port of the outer silo is a metal pipe with two open ends, and the cylinder bodies at the other positions of the outer silo are provided with heat pipes or metal pipes with two open ends.

The metal pipe with two open ends arranged on the cylinder body close to the discharge port of the outer silo prevents the heat-conducting working medium in the cavity between the outer silo and the middle silo from flowing smoothly, so that the heat-conducting working medium cannot flow circularly all the time.

The two ends of the radiating pipe outside the cylinder in the outer cylinder bin are convenient for installing the sealing gasket and the sealing cover.

The heat radiating pipe and the outer barrel and outer barrel of the outer silo are welded into a whole by a welding machine, the combination position of the heat radiating pipe and the outer barrel and outer barrel of the outer silo is welded into a whole, the heat radiating pipe and the barrel around the orifice are fixedly sealed into a whole, and the combination position of the heat radiating pipe and the outer barrel and outer barrel of the outer silo and the barrel in the outer barrel and outer barrel of the outer silo is firm and airtight.

Coating the radiating pipe, the outer barrel of the outer barrel bin, the combination part of the inner barrel of the outer barrel bin and the barrel of the drying bin with high-temperature-resistant antirust paint for rust prevention; the high-temperature-resistant antirust paint can reduce the metal oxidation corrosion of the combination part of the radiating pipe, the outer barrel of the outer silo and the inner barrel of the outer barrel.

The sealing cover is a fixed cover manufactured by stamping a metal plate; and performing coating rust prevention on the inner side and the outer side of the sealing cover by using high-temperature-resistant rust-proof paint.

The upper opening of the sealing cover is fixed on the radiating pipe, and the sealing cover and the radiating pipe are connected and fixed into a whole; the lower opening of the sealing cover is fixed on the outer silo, the middle silo and the inner silo, and the sealing cover is fixedly connected with the outer silo, the middle silo and the inner silo into a whole.

The upper opening of the sealing cover is a small opening, and the inner diameter of the opening of the upper opening of the sealing cover is the same as the diameter of the radiating pipe. The lower opening of the sealing cover is a large opening, the diameter of the opening of the lower opening of the sealing cover is larger than that of the diameter of the radiating pipe, and the lower opening of the sealing cover is attached to the outer cylinder body of the outer silo and the inner cylinder body of the outer cylinder silo.

After the sealing gasket is sleeved on the radiating pipes at two ends of the radiating pipe protruding out of the outer cylinder bin outer cylinder body of the outer cylinder bin and the radiating pipe outside the outer cylinder bin inner cylinder body, the sealing cover is tightly pressed on the sealing gasket on the radiating pipe under the action of external force, and the sealing gasket is arranged in the cavity of the sealing cover, so that the sealing degree of the sealing gasket is improved.

The upper edge of the cover opening of the upper cover opening of the sealing cover pressed on the sealing gasket is welded by an electric welding machine, the upper cover opening of the sealing cover is fixed on the radiating pipe, and the sealing cover and the radiating pipe are connected and fixed into a whole; the sealing cover connected and fixed with the radiating pipe into a whole improves the firmness of the radiating pipe.

The lower edge of a cover lower opening of a sealing cover pressed on the sealing gasket is welded by an electric welding machine, the cover lower opening of the sealing cover is fixed on an outer barrel bin outer barrel of an outer barrel bin, the sealing cover is connected and fixed with the outer barrel bin outer barrel of the outer barrel bin and an inner barrel of the outer barrel bin into a whole; and the outer barrel of the outer silo are connected and fixed into a whole by the sealing cover, so that the compression resistance of the outer barrel and the outer barrel of the outer silo around the radiating pipe and the compression resistance of the inner barrel of the outer barrel are improved.

And (3) coating the outside of the welded and fixed sealing cover with high-temperature-resistant antirust paint for rust prevention.

The sealing cover has four functions: firstly, play the effect of fixed seal gasket. And secondly, the sealing cover plays a role in sealing the cylinder body and the radiating pipe of the outer silo, and ensures that air outside the outer cylinder silo or heat conducting working medium cannot enter the silo interior of the middle silo through a leakage point at the welding position between the radiating pipe and the cylinder body of the outer cylinder silo. And thirdly, the outer barrel and outer barrel of the outer silo are fixed on the outer barrel and inner barrel of the outer barrel, the sealing cover on the inner barrel of the outer barrel and outer barrel of the middle silo fixedly supports the outer barrel and inner barrel of the outer barrel around the radiating pipe, and the negative pressure resistance and compression resistance of the outer barrel and outer barrel of the outer silo and the inner barrel of the outer barrel around the radiating pipe are improved. Fourthly, the sealing cover connected and fixed with the radiating pipe as a whole strengthens the outer barrel bin outer barrel body of the radiating pipe and the outer barrel bin, the firmness between the barrel bodies in the outer barrel bin and the outer barrel bin outer barrel body of the radiating pipe and the outer barrel bin are guaranteed by the sealing cover connected and fixed as a whole with the radiating pipe, the welding position of the barrel body in the outer barrel bin is under the shaking action of the radiating pipe in the rotating outer barrel bin, and the outer barrel bin outer barrel body of the radiating pipe and the outer barrel bin and the welding position of the barrel body in the outer barrel bin cannot be broken.

When the radiating pipe is a heat pipe, the heat pipe synchronously rotates along with the outer silo, two ends of the heat pipe are continuously staggered and changed up and down, one end of the heat pipe at the lower end is an evaporation section of the heat pipe, and one section of the heat pipe in the outer silo is a condensation section of the heat pipe.

The two ends of the heat pipe protruding out of the cylinder body of the outer silo increase the heat conduction heating area of the evaporation section of the heat pipe, so that heat energy carried by heat conduction working media in an external heating bin or a heating groove can be conveniently conducted to the protruding cylinder body outside the outer silo, and the evaporation section of the cylinder body in the outer silo, which is positioned at one end of the heat pipe at the lower end of the outer silo, can conduct heat and heat, so that the heat conduction heating speed of the heat energy is increased.

When the radiating pipe is a metal pipe with openings at two ends, the metal pipe with the openings at two ends synchronously rotates along with the inner silo, the openings at two ends of the metal pipe are continuously staggered and changed up and down, the heat conduction working medium carrying heat energy can continuously flow into or out of the inner part of the metal pipe with the openings at two ends to conduct heat conduction and heat exchange for materials near the radiating pipe, the heat conduction and heat exchange speed of the heat energy is improved by the enlarged heat exchange area of the radiating pipe, the material drying efficiency is enhanced, and the purpose of drying the rapid materials is achieved.

The radiating pipe is formed by mixing a metal pipe with openings at two ends and a heat pipe; the radiating pipe arranged on the cylinder body close to the discharge port end of the outer silo is a metal pipe with two open ends, and the other positions of the outer silo are provided with heat pipes or metal pipes with two open ends.

The metal pipe and the heat pipe with openings at two ends are mixed together on the outer silo, so that the heat conducting working medium in the cavity between the middle silo and the outer silo can be conveniently and quickly circulated, and the heat conducting and exchanging speed of heat energy is improved.

The inner barrel bin comprises an inner barrel bin body and a helical blade.

The two ends of the inner barrel bin are provided with a feed inlet and a discharge outlet.

The helical blade is fixed on the inner silo body, and the helical blade plays roles of stirring and lifting and propelling materials in the rotating process of the inner silo.

The cooling pipe, the sealing gasket and the sealing cover arranged in the inner silo are the same as the cooling pipe, the sealing gasket and the sealing cover arranged in the middle silo and the outer silo in installation procedures and achieved functional effects.

The upper part and the lower part of the inner barrel body of the inner barrel are provided with corresponding orifices, and the hole diameter of the orifices is the same as the pipe diameter of the radiating pipe.

The distance between the orifices on the inner barrel body of the inner silo and the orifices is 50-300 mm.

The radiating pipe is formed by mixing a metal pipe with openings at two ends and a heat pipe and is arranged on the cylinder body of the inner silo.

The two ends of the radiating pipe are inserted into corresponding holes at the upper part and the lower part of the inner cylinder barrel of the inner cylinder silo, and the height of the two ends of the radiating pipe protruding out of the inner cylinder barrel is 20-180 mm; the pipe spacing between the radiating pipe and the radiating pipe is 50-300 mm.

The heat pipe arranged on the cylinder body close to the discharge port of the inner silo is a metal pipe with two open ends, and the heat pipes or the metal pipes with two open ends are arranged on the cylinder bodies at the rest positions of the inner silo.

The problem that the heat-conducting working medium outside the cylinder body at the discharge port end close to the inner cylinder bin cannot flow smoothly is avoided, so that the heat-conducting working medium cannot flow circularly all the time.

The sealing gasket and the sealing cover are conveniently arranged at the two ends of the radiating pipe which is protruded out of the cylinder body of the inner silo.

The combination position of the radiating pipe and the inner silo cylinder body of the inner silo is welded into a whole by a welding machine, the radiating pipe and the cylinder body around the hole opening are fixedly sealed into a whole, and the combination position of the radiating pipe and the inner silo cylinder body is firm and airtight.

Coating and rust prevention are carried out on the combination part of the radiating pipe and the inner silo cylinder body and the cylinder body of the drying silo by using high-temperature-resistant rust-proof paint; the high-temperature-resistant antirust paint can reduce the metal oxidation corrosion of the joint part of the radiating pipe and the barrel body of the inner barrel bin.

The sealing cover is a fixed cover manufactured by stamping a metal plate; and performing coating rust prevention on the inner side and the outer side of the sealing cover by using high-temperature-resistant rust-proof paint.

The upper opening of the sealing cover is a small opening, and the inner diameter of the opening of the upper opening of the sealing cover is the same as the diameter of the radiating pipe. The lower opening of the sealing cover is a large opening, the diameter of the opening of the lower opening of the sealing cover is larger than that of the radiating pipe, and the lower opening of the sealing cover is attached to the inner silo cylinder.

After the sealing gasket is sleeved on the radiating pipes at two ends of the radiating pipe which protrudes out of the inner cylinder bin body of the inner silo, the sealing cover is tightly pressed on the sealing gasket on the radiating pipe under the action of external force, and the sealing gasket is arranged in the cavity of the sealing cover, so that the sealing degree of the sealing gasket is improved.

The upper edge of the cover opening of the upper cover opening of the sealing cover pressed on the sealing gasket is welded by an electric welding machine, the upper cover opening of the sealing cover is fixed on the radiating pipe, and the sealing cover and the radiating pipe are connected and fixed into a whole; the sealing cover connected and fixed with the radiating pipe into a whole improves the firmness of the radiating pipe.

The lower edge of the cover opening of the lower cover opening of the sealing cover pressed on the sealing gasket is welded by an electric welding machine, the lower cover opening of the sealing cover is fixed on the inner silo cylinder body of the inner silo, and the sealing cover and the inner silo cylinder body are connected and fixed into a whole; the sealing cover connected and fixed with the inner cylinder barrel body into a whole improves the compression resistance of the inner cylinder barrel body around the radiating pipe.

The sealing cover has four functions: firstly, play the effect of fixed seal gasket. And secondly, the sealing cover plays a role in sealing the cylinder body and the radiating pipe of the inner silo, and ensures that air outside the inner silo or heat conducting working medium can not enter the silo of the inner silo through a leakage point at the welding position between the radiating pipe and the cylinder body of the inner silo. And the sealing cover fixed on the inner cylinder barrel body of the inner cylinder barrel fixedly supports the inner cylinder barrel body of the inner cylinder barrel around the radiating pipe, so that the negative pressure resistant compression strength of the inner cylinder barrel body of the inner cylinder barrel around the radiating pipe is improved. Fourthly, the sealing cover which is connected and fixed with the radiating pipe into a whole enhances the firmness between the radiating pipe and the inner silo cylinder body of the inner silo, and the sealing cover which is connected and fixed with the radiating pipe into a whole ensures that the welding position of the radiating pipe and the inner silo cylinder body of the inner silo is not broken under the shaking action of the radiating pipe in the rotating inner silo.

When the radiating pipe is a heat pipe, the heat pipe synchronously rotates along with the inner silo, two ends of the heat pipe are continuously and alternately changed up and down, one end of the heat pipe at the lower end is an evaporation section of the heat pipe, and one section of the heat pipe in the inner silo is a condensation section of the heat pipe.

The two ends of the heat pipe protruding out of the cylinder body of the inner silo increase the heat conduction heating area of the evaporation section of the heat pipe, so that the heat energy carried by the heat conduction working medium in the external heating bin or the heating groove can be conveniently conducted and heated to the evaporation section of the protruding cylinder body of the inner silo at one end of the heat pipe at the lower end of the outer cylinder bin, and the heat conduction heating speed of the heat energy is increased.

The heat pipes rotate synchronously along with the inner silo, the two ends of the heat pipes are continuously and alternately changed up and down, one end of the heat pipe at the lower end is an evaporation section of the heat pipe, and one section of the heat pipe in the inner silo is a condensation section of the heat pipe.

When the radiating pipe is a metal pipe with openings at two ends, the metal pipe with the openings at two ends synchronously rotates along with the inner silo, the openings at two ends of the metal pipe are continuously staggered and changed up and down, the heat conduction working medium carrying heat energy can continuously flow into or out of the inner part of the metal pipe with the openings at two ends to conduct heat conduction and heat exchange for materials near the radiating pipe, the heat conduction and heat exchange speed of the heat energy is improved by the enlarged heat exchange area of the radiating pipe, the material drying efficiency is enhanced, and the purpose of drying the rapid materials is achieved.

The radiating pipe is formed by mixing a metal pipe with openings at two ends and a heat pipe; the radiating pipe arranged on the cylinder body close to the discharge port of the inner silo is a metal pipe with two open ends, and the rest positions of the inner silo are provided with heat pipes or metal pipes with two open ends.

The metal pipes and the heat pipes with openings at two ends are mixed together on the inner silo for use, so that the heat conducting working medium in the cavity between the inner silo and the middle silo can be conveniently and quickly circulated, and the heat conducting and exchanging speed of heat energy is improved.

The three-cylinder vacuum drying bin has the combination mode that: the outer silo and the middle silo are sequentially and concentrically sleeved on the inner silo; the outer silo, the middle silo and the middle silo are fixedly connected by a bracket in sequence.

The inner cylinder bin barrel body at the discharge port end of the inner cylinder bin is fixedly sealed into a whole through a baffle plate and the inner cylinder bin barrel body at the feed port end of the middle cylinder bin.

A sealed cavity is arranged between the inner barrel body of the inner silo and the inner barrel body of the middle silo, and the heat conducting working medium is in the sealed cavity.

The inner barrel body of the outer silo at the discharge port end of the outer silo and the outer barrel body of the middle silo at the feed port end of the middle silo are fixedly sealed into a whole; the inner cylinder body of the outer cylinder bin at the feeding port end of the outer cylinder bin is fixedly sealed into a whole with the outer cylinder body of the middle cylinder bin at the discharging port end of the middle cylinder bin through a baffle. The outer barrel body of the outer barrel at the feeding port end of the outer barrel is fixedly sealed into a whole with the inner barrel body of the middle barrel at the discharging port end of the middle barrel through the baffle.

A sealed cavity is arranged between the inner cylinder body of the outer cylinder bin and the outer cylinder body of the middle cylinder bin, and the heat conducting working medium is arranged in the sealed cavity.

The heat conducting working medium can flow through the cavity between the inner silo and the middle silo and the cavity between the outer silo and the middle silo.

The heat conducting working medium in the cavity between the inner silo and the middle silo can flow into the external heating silo or the external heating groove through the metal pipes with openings at the two ends on the middle silo and the external silo.

The heat conducting working medium heated in the external heating bin or the heating groove can flow into a cavity between the inner silo and the middle silo through metal pipes with openings at two ends on the middle silo and the outer silo, and the heat conducting working medium carrying heat energy can conduct heat conduction and heat for the barrel body and the radiating pipe of the inner silo.

The outer silo and the middle silo are fixedly connected by a support in sequence, and two ends of the support are supported and fixed on the inner cylinder body of the outer silo and the outer cylinder body of the middle silo.

The heat exchange of the three-cylinder vacuum drying bin is the three-dimensional heat exchange of the radiating pipes in the drying bin. The three-cylinder vacuum drying bin is supplied with heat by a heat conducting working medium in an external heating bin or a heating groove, the heat conducting working medium carrying heat energy in the external heating bin flows through the metal pipes with openings at partial two ends in the radiating pipes arranged in the internal silo, the middle silo and the external cylinder bin, so that the heat conducting working medium can flow in a convection manner in cavities among the internal silo, the middle silo and the external cylinder bin, and the heat energy carried by the heat conducting working medium is used for conducting heat for the internal silo, the middle silo and the external cylinder bin.

Under the driving action of external force, the three-cylinder vacuum drying bin supported by the support can rotate on the support, the metal pipes with openings at two ends synchronously rotate along with the inner silo, and the openings at two ends of the metal pipes are continuously staggered and changed from top to bottom.

The heat conducting working medium carrying heat energy can continuously flow into or out of the metal pipe with openings at two ends to conduct heat conduction and heat exchange on the materials near the radiating pipe; the heat conducting working medium in the cavity between the middle silo and the inner silo and between the middle silo and the outer silo can flow to the heating bin or the heating tank outside the outer silo through the metal pipe pipes with openings at two ends of the inner heat radiating pipe parts of the middle silo and the outer silo, so that the heat conducting working medium can be heated again conveniently.

The heat energy carried by the heat conducting working medium in the external heating bin or the heating groove conducts heat conduction and heat exchange for the materials through the cylinders of the inner silo, the middle silo and the outer silo and the radiating pipes, the heat exchange area increased by the radiating pipes improves the heat conduction and heat exchange speed of the heat energy, enhances the drying efficiency of the materials, and achieves the aim of quickly drying the materials.

The inner silos, the middle silos and the outer silos of the three-cylinder vacuum drying bin are communicated, and the flow of material moving and drying in the three-cylinder vacuum drying bin is shown as the material flow direction marks in figures 1, 2, 3 and 4.

The vacuum unit extracts moisture generated during drying of materials in the inner silo, the middle silo and the outer silo through the exhaust pipe to realize continuous vacuum drying of the materials.

The first step, the three-cylinder vacuum drying bin is supplied with heat by the heat conducting working medium in the external heating bin, the heat conducting working medium carrying heat energy in the external heating bin flows through the metal pipes with openings at partial two ends in the heat radiating pipes arranged in the internal silo, the middle silo and the external silo, the heat conducting working medium can flow in a convection way in the cavities among the internal silo, the middle silo and the external silo, and the heat energy carried by the heat conducting working medium is used for conducting heat conduction and heating the materials in the internal silo, the middle silo and the external silo.

Secondly, the materials to be dried enter the inner silo from the feeding hole of the inner silo, and the materials at the feeding hole of the inner silo move to the discharging hole of the inner silo to be discharged under the propelling action of the helical blades.

And thirdly, feeding the materials discharged from the discharge port of the inner silo into the middle silo from the feed port of the middle silo, and moving the materials at the feed port of the middle silo to the discharge port of the middle silo for discharge under the propelling action of the helical blades.

And fourthly, feeding the materials discharged from the discharge port of the middle silo into the outer silo from the feed port of the outer silo.

The three-cylinder vacuum drying bin starts to conduct heat conduction heating and vacuum drying on materials, and the vacuum unit extracts moisture generated when the materials in the inner silo, the middle silo and the outer cylinder are dried through the exhaust pipes.

And fifthly, the materials dried in the inner barrel bin, the middle silo and the outer barrel bin move to a discharge port of the outer silo under the propelling action of the helical blades to discharge, so that the continuous vacuum drying of the materials is realized.

The vacuum drying bin is characterized in that a material inlet of an inner barrel bin of the three-barrel vacuum drying bin and a material outlet of an outer barrel bin are provided with valves or can be provided with valves, an exhaust pipe enters the inner barrel bin through the valves on the material inlet, and a vacuum unit extracts moisture generated when materials in the inner barrel bin, the middle barrel bin and the outer barrel bin are dried through the exhaust pipe.

Firstly, materials to be dried enter the inner silo from a feed inlet of the inner silo, the middle silo is filled with the materials, the feed inlet of the inner silo is closed after the materials are filled in the outer silo, and a valve is arranged on a discharge outlet of the outer silo.

And secondly, starting to heat and vacuum dry the materials by the three-cylinder vacuum drying bin, and extracting moisture generated when the materials in the inner silo, the middle silo and the outer silo are dried by the vacuum unit through the exhaust pipe.

And thirdly, the materials dried in the inner barrel bin, the middle silo and the outer barrel bin move to a discharge port of the outer silo under the propelling action of the helical blades to discharge, so that the vacuum drying of batch-type materials in batches is realized.

Compared with the existing three-cylinder drying bin, the invention has the following beneficial effects: the application provides a three-cylinder vacuum drying bin, which is characterized in that the inner cylinder bin, the middle cylinder bin and the outer cylinder bin are welded and fixed through the radiating pipes, the inner cylinder bin, the middle cylinder bin and the outer cylinder bin, high-temperature-resistant antirust paint coating is antirust, and the sealing gasket and the sealing cover are protected, so that air or heat conducting working media outside the outer cylinder bin can not enter the inner cylinder bin, the middle cylinder bin and the outer cylinder bin through the radiating pipes and the inner cylinder bin, and the welded parts between the outer cylinder bin and the inner cylinder bin enter the inner cylinder bin, the middle cylinder bin and the outer cylinder bin. When the three-cylinder vacuum drying bin rotates under the action of external force during material drying, the radiating tubes and the helical blades have the functions of stirring and propelling the materials, the materials are not easy to agglomerate in the inner silo, the middle silo and the outer silo during drying, and the drying moisture uniformity of the materials is improved.

Description of the drawings:

FIG. 1 is a schematic structural view of a three-cylinder vacuum drying chamber according to the present invention;

FIG. 2 is a schematic structural diagram of an outer silo of a three-silo vacuum drying silo according to the present invention;

FIG. 3 is a schematic structural view of a middle bin of a three-bin vacuum drying bin according to the present invention;

FIG. 4 is a schematic structural diagram of an inner barrel chamber of a three-barrel vacuum drying chamber according to the present invention;

FIG. 5 is a schematic view of the fixed connection of the heat dissipation pipe and the inner barrel bin of the three-barrel vacuum drying bin, the middle silo and the upper orifice of the outer silo;

fig. 6 is a schematic structural diagram of a sealing cover of a three-cylinder vacuum drying chamber according to the present invention.

In the drawings: 1. the device comprises an outer silo, 2, a middle silo, 3, an inner silo, 4, a baffle, 5, a feeding port, 6, a discharging port, 7, a material flow direction mark, 8, a helical blade, 9, a support, 10, a radiating pipe, 11, an outer silo inner cylinder body, 12, an outer silo outer cylinder body, 13, a middle silo inner cylinder body, 14, a middle silo outer cylinder body, 15, an inner silo cylinder body, 16, a cover opening upper edge, 17, a cover opening lower edge, 18, a sealing cover, 19, an orifice, 20, a sealing gasket, 21, a cover lower opening, 22, a cover upper opening, 23 and a cylinder body.

The specific implementation mode is as follows:

the invention is further described below with reference to the accompanying drawings and examples.