CN216384802U

CN216384802U - Multifunctional vacuum drying device

Info

Publication number: CN216384802U
Application number: CN202122658429.8U
Authority: CN
Inventors: 陈永平
Original assignee: Hunan Huifeng Environmental Protection Equipment Technology Co ltd
Current assignee: Hunan Huifeng Environmental Protection Equipment Technology Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-26
Anticipated expiration: 2031-11-02

Abstract

The utility model provides a multifunctional vacuum drying device, which comprises a kiln body, wherein one end of the kiln body is provided with a kiln door, the outer side of the kiln door is provided with a support rail, a material bearing unit is movably arranged on the support rail, the inner cavity wall at the other end of the kiln body is provided with a cooling coil, the bottom of the kiln body below the cooling coil is provided with an inclined water guide surface, the kiln body at the lower side of the water guide surface is provided with a water collecting hole which penetrates through the inside and the outside, and the outer side of the kiln body is provided with a water collecting pipe connected with the water collecting hole; the kiln body inner chamber both sides are equipped with the air feed unit, form the drying zone between two sets of air feed units, and one of them side of the kiln body is connected with the auxiliary material unit, and kiln body opposite side is connected with the evacuation unit. The scheme has the advantages of reasonable structure, good use effect, simple and convenient operation and strong practicability.

Description

Multifunctional vacuum drying device

Technical Field

The utility model relates to the technical field of production of environment-friendly materials, in particular to a multifunctional vacuum drying device.

Background

Vacuum drying is a method of drying under a vacuum and a pressure lower than atmospheric pressure. Under the vacuum condition, the boiling point of water is reduced, the evaporation speed is accelerated, and thus the drying speed of the material can be accelerated at a lower temperature. The moisture in the material continuously moves to the surface, the evaporation speed of the moisture is much higher than the movement speed of the moisture in the material, the moisture is directly evaporated by the internal temperature in the use process of the traditional vacuum drying kiln, and the drying time is longer and the energy consumption is high; and when many materials are dried, the moisture in the materials is a high-value accessory, and the direct drying mode causes great resource waste.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides the multifunctional vacuum drying device which is reasonable in structure, good in using effect, simple and convenient to operate and extremely high in practicability.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows: a multifunctional vacuum drying device comprises a kiln body, wherein a kiln door is arranged at one end of the kiln body, a support rail is arranged on the outer side of the kiln door, a material bearing unit is movably placed on the support rail, a cooling coil is installed on the inner cavity wall at the other end of the kiln body, an inclined water guide surface is arranged at the bottom of the kiln body below the cooling coil, a water collecting hole which penetrates through the inside and the outside is formed in the kiln body on the lower side of the water guide surface, and a water collecting pipe connected with the water collecting hole is arranged on the outer side of the kiln body; the kiln body inner chamber both sides are equipped with the air feed unit, form the drying zone between two sets of air feed units, and one of them side of the kiln body is connected with the auxiliary material unit, and kiln body opposite side is connected with the evacuation unit.

The material supporting unit comprises a base and a supporting rod, wherein the bottom of the base is provided with a roller which is supported by a supporting rail, one end of the supporting rail is right opposite to the kiln body, the top of the other end of the supporting rail is vertically fixed with a limiting block, and the horizontal height of the top of the limiting block is higher than that of the top of the roller; a plurality of vertical pipes are vertically fixed at the top of the base, the number of the vertical pipes is more than 3, and the vertical pipes are respectively fixed at two sides of the base; the top of each adjacent vertical pipe is fixedly connected through a top beam, a plurality of hooks are sequentially distributed on the side wall of each vertical pipe from bottom to top, support rods are movably hung between the hooks of the adjacent vertical pipes, material bearing areas are formed between the support rods on two sides of the base, and a certain height is reserved between the material bearing areas on the upper layer and the lower layer to form ventilation areas.

The auxiliary material unit including the auxiliary gas pipe, the auxiliary material jar, a heater, wherein, auxiliary gas pipe one end and the kiln body wherein one side sub-unit connection, the auxiliary gas pipe other end is connected with connecting pipe one end, the connecting pipe other end is connected with the cover, the subaerial auxiliary material jar of having placed of cover below, auxiliary material tank bottoms portion is equipped with the stabilizer blade, auxiliary material tank bottoms portion is equipped with the heater, auxiliary material jar inner chamber lower part has placed and has separated the net, it is consolidated through the outer loop to separate net edge, the outer loop bottom is fixed with vertical decurrent branch, the branch bottom is by auxiliary material jar inner chamber bottom bearing, be equipped with temperature monitor and control valve on the connecting pipe.

The air supply unit comprises a support, the support is vertically fixed on two sides of an inner cavity of the kiln body, an air inlet area is reserved between the support and the wall of the inner cavity of the kiln body, a plurality of air guide cylinders are mounted on the support, two ends of the air guide cylinders penetrate through to form an air channel, the air inlet ends of the air guide cylinders are located in the air inlet area, the air outlet ends of the air guide cylinders are opposite to the drying area, an air supply motor is mounted in the air guide cylinders, a fan blade is mounted on the air supply motor on one side of the drying area, and a heating pipe is mounted on the support on one side of the air inlet area; the diameter of the outermost edge of each fan blade is a, the distance between the surface of the fan blade on one side of the center of the inner cavity of the kiln body and the wall of the inner cavity of the kiln body is b, and the ratio of a to b is 7: 3.5-5.5; the distance between the end part of the air inlet end of the air duct and the inner cavity wall of the kiln body is c, and c is less than a.

The vacuumizing unit comprises a condensing pipe and a condenser, wherein one end of the condensing pipe is connected with the kiln body, the other end of the condensing pipe is connected with the lower part of one end of the condenser, the upper part of the other end of the condenser is connected with an air exhaust pipe, the air exhaust pipe is connected with a vacuumizing pump, and the other side of the vacuumizing pump is connected with an exhaust pipe; the exhaust pipe is provided with a one-way valve; and the condenser pipe is provided with a safety valve and a pressure relief valve, and the safety valve is positioned on the condenser pipe between the pressure relief valve and the condenser.

The water collecting pipe is sequentially provided with a first valve, a second valve and a third valve.

After the scheme is adopted, after the materials are sent into the vacuum kiln, air in the vacuum kiln is pumped out through the vacuum pump, the air is cooled and cooled while being pumped out, the check valve prevents the air from returning into the kiln from the air inlet pipe in the using process, the heating pipe is heated after the vacuum pumping, the hot air is blown to the materials through the fan, and the moisture in the materials is evaporated; the evaporated water vapor contacts with a condensing pipe to be condensed into water, and the condensed water is discharged and collected uniformly through a water collecting hole at the tail of the kiln after the water falls behind; the scheme has the advantages of reasonable structure, good use effect, simple and convenient operation and strong practicability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Figure 2 is a schematic view of a material holding unit of the present invention.

FIG. 3 is a schematic view of the roller assembly of the present invention.

Fig. 4 is a schematic view of the air supply unit of the present invention.

FIG. 5 is a schematic view of an excipient unit of the present invention.

FIG. 6 is a schematic view of the evacuation unit of the present invention.

Fig. 7 is a schematic view of a structure of a condenser tube according to the present invention.

Detailed Description

The utility model will be further described with reference to the accompanying drawings, in which preferred embodiments of the utility model are: referring to fig. 1 to 7, the multifunctional vacuum drying device described in this embodiment includes a kiln body 201, a kiln door is disposed at one end of the kiln body 201, a support rail 106 is disposed at an outer side of the kiln door, a material support unit is movably disposed on the support rail 106, a cooling coil 406 is mounted on a cavity wall at the other end of the kiln body 201, an inclined water guide surface is disposed at a bottom of the kiln body 201 below the cooling coil 406, a water collection hole 407 penetrating inside and outside is disposed on the kiln body 201 at a lower side of the water guide surface, and a water collection pipe 408 connected to the water collection hole 407 is disposed at an outer side of the kiln body 201; the water collecting pipe 408 is provided with a first valve 409, a second valve 410 and a third valve 411 in sequence. The kiln body 201 inner chamber both sides are equipped with the air feed unit, form the drying zone between two sets of air feed units, and one of them side of the kiln body 201 is connected with the auxiliary material unit, and the kiln body 201 opposite side is connected with the evacuation unit.

The material supporting unit comprises a base 101 and a supporting rod 105, wherein a roller 107 is installed at the bottom of the base 101, the roller 107 is supported by a supporting rail 106, one end of the supporting rail 106 is opposite to the kiln body, a limiting block 108 is vertically fixed at the top of the other end of the supporting rail 106, and the horizontal height of the top of the limiting block 108 is higher than that of the top of the roller 107; a plurality of stand pipes 102 are vertically fixed on the top of the base 101, the number of the stand pipes 102 is more than 3, and the stand pipes are respectively fixed on two sides of the base 101; the tops of adjacent vertical pipes 102 are fixedly connected through a top beam 103, a plurality of hooks 104 are sequentially distributed on the side wall of the vertical pipe 102 from bottom to top, support rods 105 are movably hung between the hooks 104 of the adjacent vertical pipes 102, material bearing areas are formed between the support rods 105 on two sides of the base 101, and a ventilation area is formed by reserving a certain height between the material bearing areas on the upper layer and the lower layer.

The auxiliary material unit is including assisting trachea 202, auxiliary material jar 203, heater 205, wherein, assist trachea 202 one end and the kiln body one side sub-unit connection wherein, the auxiliary trachea 202 other end is connected with connecting pipe 207 one end, the connecting pipe 207 other end is connected with cover 206, the subaerial auxiliary material jar 203 of having placed of cover 206 below, auxiliary material jar 203 bottom is equipped with stabilizer blade 204, auxiliary material jar 203 bottom is equipped with heater 205, auxiliary material jar 203 inner chamber lower part has been placed and has been separated net 209, it is reinforced (rfd) through the outer loop to separate net 209 edge, the outer loop bottom is fixed with vertical decurrent branch, the branch bottom is by auxiliary material jar 203 inner chamber bottom bearing, be equipped with temperature monitor and control valve 208 on the connecting pipe 207.

The air supply unit comprises a support 401, the support 401 is vertically fixed on two sides of an inner cavity of the kiln body 201, an air inlet area is reserved between the support 401 and the inner cavity wall of the kiln body 201, a plurality of air guide cylinders 402 are installed on the support 401, two ends of the air guide cylinders 402 penetrate through to form an air channel, an air inlet end of each air guide cylinder 402 is located in the air inlet area, an air outlet end of each air guide cylinder 402 is opposite to the drying area, an air supply motor 403 is installed in each air guide cylinder 402, a fan blade 404 is installed on the air supply motor 403 on one side of the drying area, and a heating pipe 405 is installed on the support on one side of the air inlet area; the diameter of the outermost edge of the fan blade 404 is a, the distance between the surface of the fan blade 404 on one side of the center of the inner cavity of the kiln body 201 and the wall of the inner cavity of the kiln body 201 is b, and the ratio of a to b is 7: 3.5-5.5; the distance between the end part of the air inlet end of the air duct 402 and the inner cavity wall of the kiln body 201 is c, and c is less than a.

The vacuumizing unit comprises a condensing pipe 301 and a condenser 302, wherein one end of the condensing pipe 301 is connected with the kiln body 201, the other end of the condensing pipe 301 is connected with the lower part of one end of the condenser 302, the upper part of the other end of the condenser 302 is connected with an air exhaust pipe 303, the air exhaust pipe 303 is connected with a vacuumizing pump 304, and the other side of the vacuumizing pump 304 is connected with an exhaust pipe 309; the extraction pipe 303 is provided with a one-way valve 305; the condenser pipe 301 is provided with a safety valve 307 and a pressure relief valve 308, and the safety valve 307 is positioned on the condenser pipe 301 between the pressure relief valve 308 and the condenser 302.

The base, the vertical pipe and the top beam in the material bearing unit are all made of metal hollow square pipes, and the material bearing unit has the advantages of light weight and good bearing property after being made of the hollow square pipes, the feeding direction of the kiln body is the length direction, the length direction of the base is two ends, the supporting rods are positioned on the outer side walls of the vertical pipes on the two sides of the base, the length direction of the suspended supporting rods is consistent with the length direction of the base (the feeding direction of the kiln body is consistent), the supporting rods distributed in the mode cannot be blown by wind power in the vacuum negative pressure kiln, a material bearing area is formed between the two supporting rods on the same horizontal plane, then, materials (bamboo strips, bamboo chips or other strip-shaped materials) are flatly placed in the material bearing areas, a certain height is reserved between the material bearing areas on the upper layer and the material bearing areas on the lower layer to form a ventilation area, the length direction of the placed materials is consistent with the width direction of the base, and the base and the materials are pushed into the drying area together after the materials are placed;

after the material enters the kiln, closing a kiln door, pumping air out of the kiln by a vacuum pump (pumping hot air during material cooling), cooling the air in a condenser after passing through a condenser pipe (entering from the lower part of the condenser and discharging from the upper part of the condenser to ensure that the hot air fully contacts with a condensing unit during ascending so as to perform heat exchange), wherein the condenser can adopt air cooling or water cooling as required, the condensed air is discharged from an exhaust pipe at the vacuum pump (an outlet of the exhaust pipe extends into the cooling to perform secondary cooling and dust removal on the air), when the pressure in the kiln is overlarge, the pressure is relieved through a pressure relief valve which is a check valve and can only exhaust from the inside to the outside of the kiln, so that when the pressure in the kiln is negative, external air (cooling water) is sucked into the kiln from the exhaust pipe, and a hollow negative pressure state is formed in the kiln;

after a hollow negative pressure state is formed in the kiln, the air supply unit acts, the air supply motor and the fan blade form a fan, the distance between the end part of the air inlet end of the air duct of the air supply unit and the wall of the inner cavity of the kiln body is preferably larger than 10cm and smaller than 30cm, so that air inlet is not influenced, the space occupied by the inner cavity of the kiln body is small, and the proportion of a to b is controlled to be 7: 3.5-5.5, the distance between the size of the fan blade and the kiln wall directly influences the air inlet influence, the distance b between the fan blade and the kiln wall is 40cm when the maximum outer diameter a of the fan blade is 70cm, if a is 80cm and b is 30cm, the air inlet amount of the fan blade is the same as or even smaller than that when a is 70cm (the space in the kiln is wasted when the fan blade is large, the air inlet distance is narrow, and the air inlet amount is insufficient).

When the fans are installed, the arrangement mode of the kiln wall fans takes 6 as an example, wherein the upper layer on one side is g1, g2 and g3, the lower layer is g4, g5 and g6 (n is larger than 6), the upper layer on the other side is f1, f2 and f3, the lower layer is f4, f5 and f6 (n is larger than 6), when the kiln wall fans are used, the odd fans on one side are turned on (g 1, g3 and g 5), and the fans on the other side are turned on at even numbers (f 2, f4 and f 6); when g2, g4 and g6 are opened, f1, f3 and f5 are opened, the purpose of the opening mode is to enable the wind of one side of the fan to blow to the gap of the other side of the fan, so that wind circulation in the kiln is formed, and the wind circulation state can effectively reduce energy consumption and wind loss;

when the auxiliary material is dried, the auxiliary material (sulfur or other raw materials) is poured into an auxiliary material tank according to the requirement of adding the sulfur gas, the medicine gas and the like when the auxiliary material is required to be used (such as the bamboo mat sheets and the bamboo chopsticks are required to be added), the auxiliary material (sulfur or other raw materials) is heated by a heater (the heater is a conventional heater), the auxiliary material is gasified (or the gas containing the auxiliary material is generated), the auxiliary material gas enters a vacuum negative pressure kiln through a connecting pipe and an auxiliary gas pipe so as to finish the conveying of the auxiliary material gas, the auxiliary material (medicine bag) can also be placed on a separation net, a certain amount of water is injected into the bottom of the auxiliary material tank, the water is heated by the heater to generate the steam, the steam is contacted with the medicine bag when rising to form the medicine steam, and the medicine steam enters the vacuum negative pressure kiln through the connecting pipe and the auxiliary gas pipe so as to be contacted with the material, so as to be absorbed by the material;

this scheme is when heating the drying to the material, can condense into water with vapor (especially when dry bamboo article and some medicines, the bamboo water that the bamboo article drying was evaporated, the medicine water that evaporates when the medicine is dry all value in utilization is very big), collects the utilization to the water that condenses again to very big increase the economic benefits of enterprise.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that the changes in the shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A multi-functional vacuum drying device which characterized in that: the kiln comprises a kiln body (201), wherein a kiln door is arranged at one end of the kiln body (201), a support rail (106) is arranged on the outer side of the kiln door, a material bearing unit is movably placed on the support rail (106), a cooling coil (406) is installed on the inner cavity wall at the other end of the kiln body (201), an inclined water guide surface is arranged at the bottom of the kiln body (201) below the cooling coil (406), a water collecting hole (407) which penetrates through the inside and the outside is formed in the kiln body (201) at the lower side of the water guide surface, and a water collecting pipe (408) connected with the water collecting hole (407) is arranged on the outer side of the kiln body (201); the kiln body (201) inner chamber both sides are equipped with the air feed unit, form the drying zone between two sets of air feed units, and one of them side of the kiln body (201) is connected with the auxiliary material unit, and kiln body (201) opposite side is connected with the evacuation unit.

2. The multifunctional vacuum drying device of claim 1, wherein: the material bearing unit comprises a base (101) and a support rod (105), wherein the bottom of the base (101) is provided with a roller (107), the roller (107) is supported by a support rail (106), one end of the support rail (106) is opposite to the kiln body, the top of the other end of the support rail (106) is vertically fixed with a limiting block (108), and the horizontal height of the top of the limiting block (108) is higher than that of the top of the roller (107); a plurality of vertical pipes (102) are vertically fixed at the top of the base (101), the number of the vertical pipes (102) is more than 3, and the vertical pipes are respectively fixed at two sides of the base (101); the tops of adjacent vertical pipes (102) are fixedly connected through top beams (103), a plurality of hooks (104) are sequentially distributed on the side wall of the vertical pipe (102) from bottom to top, support rods (105) are movably hung between the hooks (104) of the adjacent vertical pipes (102), material bearing areas are formed between the support rods (105) on two sides of the base (101), and a ventilation area is formed by reserving a certain height between the material bearing areas on the upper layer and the lower layer.

3. The multifunctional vacuum drying device of claim 1, wherein: the auxiliary material unit is including auxiliary gas pipe (202), auxiliary material jar (203), heater (205), wherein, auxiliary gas pipe (202) one end and the kiln body wherein one side sub-unit connection, auxiliary gas pipe (202) other end and connecting pipe (207) one end are connected, connecting pipe (207) other end is connected with cover (206), auxiliary material jar (203) have been placed to cover (206) below subaerial, auxiliary material jar (203) bottom is equipped with stabilizer blade (204), auxiliary material jar (203) bottom is equipped with heater (205), auxiliary material jar (203) inner chamber lower part has been placed and has been separated net (209), it consolidates through the outer loop to separate net (209) edge, the outer loop bottom is fixed with vertical decurrent branch, the branch bottom is by auxiliary material jar (203) inner chamber bottom bearing, be equipped with temperature display and control valve (208) on connecting pipe (207).

4. The multifunctional vacuum drying device of claim 1, wherein: the air supply unit comprises a support (401), the support (401) is vertically fixed on two sides of an inner cavity of the kiln body (201), an air inlet area is reserved between the support (401) and the inner cavity wall of the kiln body (201), a plurality of air guide cylinders (402) are installed on the support (401), two ends of the air guide cylinders (402) penetrate through to form an air channel, an air inlet end of each air guide cylinder (402) is located in the air inlet area, an air outlet end of each air guide cylinder (402) is opposite to the drying area, an air supply motor (403) is installed in each air guide cylinder (402), a fan blade (404) is installed on the air supply motor (403) on one side of the drying area, and a heating pipe (405) is installed on the support on one side of the air inlet area; the diameter of the outermost edge of the fan blade (404) is a, the distance between the surface of the fan blade (404) on one side of the center of the inner cavity of the kiln body (201) and the wall of the inner cavity of the kiln body (201) is b, and the proportion of a to b is 7: 3.5-5.5; the distance between the end part of the air inlet end of the air duct (402) and the inner cavity wall of the kiln body (201) is c, and c is less than a.

5. The multifunctional vacuum drying device of claim 1, wherein: the vacuumizing unit comprises a condensing pipe (301) and a condenser (302), wherein one end of the condensing pipe (301) is connected with the kiln body (201), the other end of the condensing pipe (301) is connected with the lower part of one end of the condenser (302), the upper part of the other end of the condenser (302) is connected with an air extracting pipe (303), the air extracting pipe (303) is connected with a vacuumizing pump (304), and the other side of the vacuumizing pump (304) is connected with an exhaust pipe (309); a check valve (305) is arranged on the air extraction pipe (303); a safety valve (307) and a pressure relief valve (308) are arranged on the condensation pipe (301), and the safety valve (307) is positioned on the condensation pipe (301) between the pressure relief valve (308) and the condenser (302).

6. The multifunctional vacuum drying device of claim 1, wherein: the water collecting pipe (408) is sequentially provided with a first valve (409), a second valve (410) and a third valve (411).